CN104941034A

CN104941034A - Improved medical injector system

Info

Publication number: CN104941034A
Application number: CN201510221932.3A
Authority: CN
Inventors: R·B·萨维奇
Original assignee: Bayer Healthcare LLC
Current assignee: Bayer Healthcare LLC
Priority date: 2000-07-10
Filing date: 2001-07-10
Publication date: 2015-09-30

Abstract

A medical injector system for injecting fluid from a syringe (300) into a patient is provided, the syringe (300) has a barrel (300) and a plunger (310), and the plunger (310) comprises an inner surface having an engaging portion (311) adapted to be releasably engaged by a plunger handle (130) which has a retention member (142) adapted to releasably engage the engaging portion (311) of the plunger (310). A syringe holder comprising a cradle member (200) adapted to receive a barrel (300) of the syringe (300) and a pivotable catch (500) to releasably lock the syringe (300) in the cradle member (200) is also provided.

Description

The medical injector systems improved

The application is the divisional application that name is called " medical injector systems of improvement ", the applying date is July 10 calendar year 2001, application number is the Chinese patent application of 200610077809.X.

Technical field

The present invention relates to the medical injector system of medical fluid injection to patient's vascular.

Background technology

Contrast medium is expelled in patient the medical infusion appliance of thinking biological junction structure shadow and syringe is well-known in the art.Such as, the United States Patent (USP) 4 theming as " angiography infusion appliance and the angiography syringe used therewith " of the people such as D.M.Reilly is authorized on July 7th, 1987,677,980 disclose angiography infusion appliance equipment, and this patent transfer gives the assignee of the application.This equipment de-sign becomes to be expelled in the vascular system of animal by contrast medium, and some syringes install in the pressure jacket of infusion appliance from behind in the device.In particular, this equipment comprises a rotating rotating turret with a pair pressure jacket, owing to rotatably making when the pressure jacket that is loaded onto a syringe is from behind in injection position, another pressure jacket is in the position that a syringe of being correlated with can be installed from behind.Subsequently, when the injection of the contrast medium of the first syringe completes, rotary motion tower makes the first syringe move to loading position, and the second pressure jacket and syringe move to injection position simultaneously.

In equipment disclosed in ' 980 patents, the actuator of angiography infusion appliance is selected connected with the plunger actuation of syringe by any of mobile route of a release mechanism in syringe plunger or is separated.But in order to enable release mechanism correctly operate, syringe plunger must be positioned at appropriate direction and coordinate with infusion appliance piston.In addition, be installed in the process of infusion appliance by syringe, syringe must correctly align with respective pressure jacket, and syringe plunger is connected with infusion appliance piston, and can be separated from one another.

The United States Patent (USP) 5 theming as " from the medication injections pipe installed and the syringe used therewith " above of the people such as D.M.Reilly is authorized January 24 nineteen ninety-five, 383, the equipment that 858 equipment disclosing ' 980 patents relatively improve to some extent, this patent also transfers the possession of the assignee giving the present patent application.In the equipment that ' 858 patents describe, the syringe of at least one embodiment, from the infusion appliance be installed to without pressure jacket, overcomes a defect of the infusion appliance equipment of ' 980 patents above.

The infusion appliance described in ' 858 patents has one first relieving mechanism, syringe be installed to infusion appliance and therefrom take off.In addition, this equipment comprises one second relieving mechanism, and it makes infusion appliance piston engage with syringe plunger and depart from.When syringe rotates, syringe is installed to infusion appliance or therefrom takes off, and meanwhile, plunger is connected to piston or therefrom takes off.Disclosed structure needs the specific direction of syringe one to be arranged in infusion appliance, makes syringe can engage infusion appliance releasedly, and meanwhile, plunger can engaging piston releasedly.In addition, identical with the syringe be disclosed in ' 980 patents, in the process of assembling, syringe plunger must be correct in good direction in syringe.

The United States Patent (USP) 5,300,031 theming as " injecting a fluid into the equipment of animal and the disposable syringe for installing before this equipment " authorizing the people such as C.Neer on April 5th, 1994 discloses another infusion appliance equipment.' 031 each embodiment that patent discloses the infusion appliance with pressure jacket, wherein syringe is installed to infusion appliance pressure jacket by the opening that is arranged on pressure jacket front end and therefrom takes off.In order to remain in pressure jacket by syringe, such as, in injection manipulation, the front end of syringe is locked to the front end of pressure jacket.In order to syringe is connected correctly to pressure jacket, syringe can only can insert pressure jacket in a direction.

In each above-mentioned example, syringe must be connected to infusion appliance at a specific direction, to guarantee that syringe is correctly installed.Need correct alignment, to ensure that syringe can correctly can operate in medical science angiographic procedure.But required direction can hinder Fast Installation and the replacing of syringe.Required direction also add and manufactures the cost of assembly and the complexity of syringe.

Therefore, although confirmed that above-mentioned infusion appliance and syringe equipment are effective, but propose a kind of medical science infusion appliance of simply installing of needs above.Specifically, in order to be convenient to install further, a kind of requirement being proposed to syringe, does not namely need easily to be connected to infusion appliance at the situation hemostasis pipe of syringe and/or syringe plunger specific direction.In addition, in order to simplify the assembling of each component of syringe, proposing need such plunger to syringe, namely this plunger does not need the body of relative injection pipe or matrix to be oriented at specific direction.Further, in order to make the shortest time needed for the infusion appliance preparatory stage in injection operation, infusion appliance is proposed to the feature needing to arrange automatization.Also have another requirement, the probability namely such as by reducing cross-contamination increases the feature of the automatization being conducive to patient safety.

Medical fluid is contained in container or bottle usually, and the top of these containers or bottle has an elastic plug (or cork).This stopper is wanted to be punctured by a traditional pin or plastics pin post, with by fluid from bottle suction syringe.But common way takes off stopper simply, then with a plastic bushing, fluid is extracted into syringe.It is contaminated that this way makes fluid be exposed in the antibacterial of surrounding, thus add the risk of the undesirable infection of patient.The perforate pin post that some have specific bacteria filter has now been have developed for this problem.But in use, filled process is very loaded down with trivial details, and segment fluid flow is running off through filter.According to known method fluid by under the occasion of suction syringe in large quantities, be difficult to fluid is withdrawn in syringe bottle is kept inverted simultaneously.

Another important requirement when being patient injection with syringe pumping fluid is, will ensure that all air are discharged from the system comprising pipe before system is connected to patient.If do not accomplish this point, be so just likely expelled in patient by bubble, this can cause serious disease.

Also find, current infusion appliance equipment and infusion appliance do not have unintentional feature re-used that can stop syringe and associated tube and pin post, this grave danger re-using the cross infection that can cause between patient and patient.

Outlet for medically most of syringe has road strategic point (Luer) connector, and international standard ISO594 has regulation to this road strategic point connector.Sometimes use locking screw thread together with the relevant road in particular for elevated pressures occasion strategic point connector, be called " road strategic point locking ", screw thread contributes to closing of connection and keeps.

Flexible plastic pipe is used for many medical applications of delivery of medicaments, fluid, comparison etc. between syringe and patient.These pipes are normally made with flexiplast, and road strategic point connector is incorporated into every one end, contribute to making the connection of male portion and female part reliable and can discharge.Connector forms with hard plastics are molded usually, and have road strategic point outlet, the size of its cylindrical shape entrance is made and can be formed interference fit closely with relative soft pipe.Force pipe to be positioned at (or the inside) on cylindrical shape inlet end portion, combine conventionally by solvent or binder phase.For the occasion of elevated pressures, this combination must be very certain and firm, avoids breaking.

In some situation, pipe permanently can be connected to syringe, such as, in order to reduce manufacturing cost, or reduces the chance of contaminanted fluid spilling, or avoids the end of syringe contaminated.But, be normally molded with polypropylene in syringe, seldom have successful or reliable so be directly bonded to syringe.Some tubing is also difficult to bonding.In addition, bonding needs the strong solvent cement using such as Ketohexamethylene or cyanoacrylate adhesive usually, and these two cements can discharge dangerous vapors, leave undesired residue.

In this manual, except as otherwise noted, quoting or discussing known document, decree or clause place, this quote or discuss be not to recognize that this known document, decree or clause or any of them are combined in priority date:

A () can openly obtain;

(b) public domain road;

The part of (c) general knowledge; Or

D () can know the effort about solving any problem that this description relates to

Summary of the invention

According to a first aspect of the invention, for medical science injector system provides a syringe keeper, it comprises the frame member that is applicable to holding syringe barrel; And one releasedly syringe is locked in frame member can pivoting catch, wherein this pallet is biased and engage syringe in this primary importance towards primary importance, throws off syringe in a second position.

Syringe can be locked releasedly by pivoting catch owing to arranging one, on support, so not have an antetheca that syringe can be made to load syringe keeper from front.Those skilled in the art should give understanding, and the length of catch surface can change, to engage comparatively large (or less) area on syringe surface.

According to a particularly preferred embodiment, syringe keeper also comprises one and is positioned at positioner on frame member, one end of syringe is positioned at the predetermined position in frame member.

According to a preferred embodiment, frame member is a sleeve pipe, and it is around the body of syringe.Be preferably, this sleeve pipe, for supporting syringe with the expansion under counter pressure effect, provides the supporting that antagonism is intrinsic pressure in fluid expulsion process.This can reduce the thickness of tube body wall, saves manufacturing expense thus.

According to another preferred embodiment of the present invention, detent mechanism engages a forward shoulder of syringe.It is preferred that pallet engages syringe by the hole that is formed in support or sleeve pipe.

According to another preferred embodiment of the present invention, when syringe barrel being inserted in support or sleeve pipe, the front portion of pallet engages the correspondence front portion of syringe, is remained in support or sleeve pipe by syringe thus.In order to be taken off from support or sleeve pipe by syringe, the rear portion of pressure pallet, makes its front portion throw off with syringe barrel.

Syringe installs like this, and slide through the front end of pressure sleeve syringe simply, until pallet automatically locks.Should be simple from the method for installing above, and not need operator to reverse or intentional lock out action.By depressing the release-push of syringe, exiting syringe forward, just can discharge syringe simply.Pallet can be a part for frame member, can assemble and replace sleeve pipe, carries out cleaning or upgrading.

Syringe keeper is preferably made up of transparent duroplasts, and it comprises the common cylinder that has an opening, cuts away the angle of about 50 degree, to facilitate the insertion of syringe.The structure be made up of transparent material can see syringe and its inclusions, especially front end without barrier clearly, and its all air must be discharged after filling.Sleeve pipe is generally individual construction (preferably including a spring), by manufacturing with common standing pipe or can reducing manufacturing cost with molding process.

The rear end of sleeve pipe is preferably fixed on (preferably releasedly, be convenient to clean) infusion appliance, with infusion appliance plunger co-axially align, this makes syringe all can take off from infusion appliance at any time, and does not worry that plunger encounters the inside (and therefore may pollute it) of syringe.Volume scale can be imprinted on the sleeve pipe of keeper, thus need not be imprinted on syringe.

Syringe first after load before keeper, forms one closely cooperate to support syringe with sleeve pipe like this, thus the injected under high pressures tube swelling that prevention is given in infusion appliance.Keeper preferably has square notch forwardly on one day, allows turnover and supporting syringe catch like this in installation process.Two circular holes in sleeve pipe are preferably used as the hinge socket of pallet.

It is preferred that the hard flexiplast of pallet is molded as the shape of partial cylinder, there are two relative hinge pillars that can snap in corresponding aperture in sleeve pipe.In order to replace or clean object, catch mechanism takes off like this, expands side simply, until these hinge pillars depart from their respective holes.

According to another preferred embodiment, frame member has a biasing member, syringe partly can be released frame member when pallet discharges.It is preferred that promoting biasing member when inserting syringe barrel, making the location bias that body is released towards part thus, so that when pallet discharges, releasing from sleeve pipe with making body portion.It is preferred that comprise a spring from ejecting mechanism (being formed by biasing member) and be preferably positioned at after sleeve pipe, can pressurize to body when inserting syringe like this.

According to another preferred embodiment, biasing member can contact syringe and make the rotation of syringe minimum.According to another preferred embodiment, an optical pickocff or switch be handled or be contacted to biasing member can, notifies that infusion appliance control device has syringe like this.

According to an embodiment, frame member permanently can be installed on infusion appliance, instead of takes off during each replacing syringe, which thereby enhances convenience, decreases the chance of the sleeve pipe that falls down and make dirty.

One extension permanently can be connected to syringe.Install before being, do not need the connection tube be associated to separate syringe after injection, to reduce the danger that contaminated blood oozing from the body openings or subcuta neous tissue goes out.

Pallet can be any suitable shape.According to particularly preferred embodiment, the forward shoulder shape of syringe and the junction surface complementation of pallet.Catch surface can longer the half of all circumference of syringe according to appointment (or substantially jointly extend with support), more easily to be remained in infusion appliance by syringe.

Can there be any suitable shape at the junction surface of pallet.According to some preferred embodiments, it is wedge shape, depression or projection.The major part of load preferably facing to the leading edge wedging of the associated notch in syringe sleeve pipe, is delivered to notch (and being therefore delivered to sleeve pipe and infusion appliance) by detent mechanism, instead of on pallet hinge.

When syringe loads in sleeve pipe, syringe catch is pushed to.Once syringe enters completely, then cross pallet before syringe, pallet is locked due to the tensile force of spring under the button, thus before syringe leading edge, form a fixing retainer.If pallet is swallow-tail form, so it can not partly close, even if it is the closed of part, any tensile force from syringe will make swallow-tail form pallet close.

In injection process, pallet is subject to the power forward of syringe.Form dovetail between the syringe of such pallet in sleeve pipe and notch, pallet can not be unclamped, can not slide under a load.

According to another preferred embodiment, keeper or injector system comprise the illumination part of an illumination injection pipe keeper.This illumination part can be mounted, engages or be connected to any suitable structure of keeper or injector system, is preferably installed on keeper.According to another preferred embodiment, it is installed on infusion appliance and the best nose in infusion appliance.Illumination part can be any suitable type or light source.It can be a lamp or spheroplast, it can be a light emitting diodeization namely).Illumination part is preferably placed on the rear portion of the exposure of keeper frame member or sleeve pipe, some light is received and along the wall transmission of frame member or sleeve pipe.The same with any thin intensive transparent material, the light that major part is received, in vertical and horizontal internal reflection, produces scattered light in the front end of frame member or sleeve pipe.Preferably, frame member or sleeve pipe have the front end of an inclination, and this front end is white (such as can carry out sand milling) processed of surface frost preferably, to obtain maximum scattering, and therefore can from a wide angle viewing.Any applicable light source all can use, but they are preferably focused or reflect, and the major part of light is exported and penetrates towards sleeve pipe.Illumination part is set there is many useful benefits.Especially, wanting the radiography room of dim light for some process, it will contribute to seeing keeper and other component clearly.

According to another preferred embodiment, syringe keeper comprises a junction surface that can engage simply with a medical science infusion appliance releasedly.Preferably, this junction surface comprises a locking piece, and locking piece comprises a groove or a pin.

Desirable hemostasis pipe keeper like this has following benefit:

A () operator can easily take off syringe keeper, so that clean;

If b () wearing and tearing or damage, can change easily;

C () can make infusion appliance receive the syringe of different size or type; And

D () is taken off syringe keeper and is convenient to transport, reduce total Package size.

In order to make the syringe keeper of the present embodiment engage with infusion appliance (or infusion appliance nose), first sleeve pipe is inserted nose, and with relax pressure rotary inwardly it, until bayonet slot engage bayonet pin.At this place, keeper enters nose completely, and keeper has rotated clockwise locking.All bayonet slot and bayonet pin assembly can circumferentially evenly separate, or they also can, in special angle (matchingoddangles) orientation of all cooperations, make keeper only engage in a specific direction.Preferably, fluid sealing and rubbing device are also set.It can be simple O shape circle or a wiping circle, and they have two following important function:

A () avoids fluid to enter infusion appliance;

B () provides a rubbing device, to reduce the probability of taking off syringe keeper because of carelessness.

According to a particularly preferred embodiment, syringe keeper comprises a block piece, to control keeper and medical science infusion appliance is thrown off.Preferably, if syringe is present in keeper, block piece can stop keeper and medical science infusion appliance to be thrown off.According to a particularly preferred embodiment, if plunger is not at an ad-hoc location, so block piece stops keeper and medical science infusion appliance to be thrown off.According to another particularly preferred embodiment, if the state that plunger is not fully retracted, block piece stops keeper and medical science infusion appliance to be thrown off.

If a block piece of the present invention is in lock form, be so preferably positioned at syringe sensor proximity, therefore, when syringe is mounted, syringe keeper can not be removed, and can not be removed in injection process.In addition, unless keeper is fully latched (such as by turning clockwise), otherwise syringe can not be installed.This embodiment is particularly useful for not having the situation of sensor, to confirm the existence of syringe.Understood, if syringe is installed, the keeper of this embodiment can not be connected.

Be preferably, the lock of this embodiment has the width similar to the syringe identification piece of detection system of the present invention, and is arranged on the axis identical with syringe identification piece.Owing to installing keeper, when all bayonet slot engage (not rotating) completely with bayonet pin, identification piece almost can meet it.According to this embodiment, in installation site, be provided with a syringe, identification piece is pushed back by past, and keeper can not be rotated in the approach of mistake (in this case counterclockwise).

According to a further aspect in the invention, be that a syringe used together with medical science injector system arranges a lining, this lining comprises an outer surface and that can engage with the body of syringe slidably, and to have what can be engaged by a plunger releasedly be the inner surface at junction surface of annular substantially, drawn back selectively by this plunger to make this lining along body.

The lining having these features by providing one, can obtain the benefit of many safety aspects about result of use and patient to be injected as described below.Because plunger remains in infusion appliance, so a syringe with lining of the present invention is engaged on this plunger, thus can from Fast Installation above.In addition, before install extension just need not be made to be separated with (closest to patient) before syringe, thus reduce the chance that possible contaminated blood oozing from the body openings or subcuta neous tissue goes out.

Junction surface can be any traditional structure, and such as, it can be a cavity, a groove or a convex ridge.When junction surface is a groove, this groove can form a semi-circular cross-section or this groove at least partly along the circumferential extension of sleeve inner surface.It is preferred that lining does not have projection to hold it back along the movement of syringe barrel below.

The lining of the type has many advantages.Thin can be ideally suited for injection-molded with uniform wall thickness, as long as owing to decreasing required material volume, decrease molding cycle-times and simply process, and makes manufacture economy.

According to a preferred embodiment, the shape of sleeve inner surface and the shape complementarity of outer plunger surface.It is preferred that the inner surface of lining comprises the interior hollow of a contact plunger.Such structure take into account the form fit being conducive to lining being provided to reinforcement effect.This makes the wall thickness of lining reduce to some extent compared with the lining of prior art, thus contributes for above-mentioned manufacture economy.It is preferred that plunger has the front end of a taper, when it engages with lining, just can self centering inherently.Compared with the lining of prior art, it also supports for any sealing member be associated with lining provides uniform coaxial line, improves sealing, especially when the high pressure for some medical science infusion appliance.Under high pressure, lining is forced to expand, to improve its sealing to syringe barrel.

The better elastic performance of lining provides reliable fit or the positive lock of keeper at junction surface, can apply suitable power when the inclusions of syringe is under high pressure discharged.

Lining is also applicable to the sealing member be associated at least partially of joint one and the outer surface of lining, or lining can complete the function of sealing member.Lining or sealing member can enclose with an O shape and combine.It is preferred that no matter sealing member is whether independent with lining, all there is the guide edge of an extension, to increase the sealing effectiveness under pressure.

According to a further aspect in the invention, for a syringe used together with medical science injector system provides a plunger, syringe has the lining of an a body and engaging tubular bodies slidably, this plunger comprises one, and can to engage one be releasedly the holding member at junction surface of annular substantially in sleeve inner surface, drawn back selectively by plunger to make lining along body.

As mentioned above, plunger in housing is arranged on by providing one, and this plunger comprises the holding member that engages the junction surface of lining releasedly, just can adopt the simple plunger be associated with injector system and multiple syringe, each syringe has lining of the present invention.Holding member can make plunger engage and locking bushing, drives it return along syringe barrel or advance thus, is drawn into or extracts syringe out to make fluid.It is preferred that there is more than one holding member.

A holding member of the present invention can be any suitable form.It is preferred that holding member is engaged with lining releasedly by machinery and/or electricity.According to this embodiment, (with by push away or to force plunger to enter the automatic joint of lining contrary) can make plunger engage lining by driving.This produces larger control to plunger locking and release lining, and this occasion for the movement of power consumption control plunger is important.Such as, particularly advantageously can after fluid expulsion syringe before (outlet) portion release lining, this is because this will make the reusable probability of syringe minimum.According to another preferred embodiment, the releasable small part that is engaged to is driven by gravity mechanism.

According to a preferred embodiment, can discharge joint is driven by the retraction of plunger.According to another embodiment, plunger is applicable to a gravity mechanism, thus makes holding member be driven (such as, they can stretch out from plunger) when plunger is in a specific direction.

According to another preferred embodiment, the retraction that joint comes across plunger automatically can be discharged, and automatically discharge lining in the process of plunger movement forward and afterwards, make syringe keep unlocking after injection, freely take off safely.Such embodiment operation is as follows:

The nose of activating member (taper) is connected to activating member, and this activating member is fixed on plunger assembly again.This plunger by towards rear drive with pumping (filling) syringe, the then fluid of exhaustjet pipe forward.It is to be noted, this plunger engages with activating member slidably, but has a limited play.It should be appreciated that, being free to slide by a drag seal and slightly reducing of plunger.According to this embodiment, when plunger driving device and activating member oppositely move, it is just mobile that activating member moves past several millimeters of plungers, and lining locking mechanism changes its state.

Activating member slides in this plunger motionless instantaneously.Driving device moves relative to plunger and stop pin forward with activating member, makes them retract and unclamps syringe.The plunger below that the shoulder of plunger driving device encounters plunger just moves (friction due to sealing member), and in this position, lining starts advance, fluid in exhaustjet pipe.The object of unclamping lining takes off the syringe used after injection.

When plunger starts to retract again, plunger (and lining) stops instantaneously, and the relative stop pin of bullet is retracted, and makes them extend to and is locked on plunger by lining.Then the shoulder of activating member encounters the interior shoulder of plunger, and it and lining are retracted to carry out filling etc.

Thus, this system automatically can ensure that lining is locked or unclamp in suitable, to avoid trouble and to improve the safety of infusion appliance to operator and patient.Certainly, to consider to have intrinsic " play " when plunger oppositely moves to during controller programming about infusion appliance.The benefit of this embodiment comprises:

A (), whenever plunger advancement, stop pin is automatic retraction immediately, enable plunger freely enter lining, and whether engagement pistons is irrelevant with lining.Because one by the locking system of gravity operation, piston was had to engagement pistons before head is inclined upwardly (with locked).

B system that () operates by gravity for one, head towards having a down dip to unlock, then must take off syringe.

C () syringe hub regracting at any time, comprises the opening of testing needle.The syringe filled in advance easily can be filled to top at any time.Available head upward removes the syringe (this is impossible by Gravity-lock system, this is because stop pin extends automatically when being in vertical direction, but plunger does not also engage with lining) filled in advance now.

D () lining is always in unlock state after injection, in infusion appliance order, can take off syringe safely in this rational position.

E () is every when plunger is contracted, lining is locked automatically and immediately, to guarantee that lining is pulled.

F () new syringe has the plunger assembled, and can stay any position (for aforesaid Gravity-lock system, lining must be positioned at the position very below of body) of body.

G () this concept is firmly with reliably.According to another preferred embodiment, maintaining body is biased, and locking, automatically unclamping when injection position only having when syringe is positioned at vertical direction (this is required when filling and remove).This is advantageously for being avoided blood suction syringe.Give some control to plunger movement, this mechanism can form a part for injecting systems, and it can make reusing of syringe drop to least restrictive or avoid reusing, and helps avoid the cross infection between patient and patient thus.Such as, following situation is given:

New syringe is provided with usually at the holding member of complete retracted position and lining.All syringes are installed through the front end of a fixing sleeve pipe (it is a part for keeper) kept of infusion appliance, and such syringe and lining align with the plunger of infusion appliance.This infusion appliance can only be injected after filling, before wherein the direction of syringe makes it, the height in the height in (outlet) portion (distance patient farthest) portion with is thereafter identical, or in its lower section, namely, syringe level or downward to, with avoid inject any residual a small amount of air.Had this system, plunger automatic retraction immediately after completing the injection, makes used lining stay drain position thus.If syringe is vertical, plunger can only be retracted when needed.Lock to make infusion appliance plunger and enter lining, plunger must engage with lining completely (when plunger is from horizontal tilt to time vertical, this system makes holding member extend) before all holding members extend.When loading onto a new syringe, lining will engage the plunger of infusion appliance, and infusion appliance subsequently towards surface thereof time, an a gravity mechanism such as weight bar is slided backwards due to gravity, excites holding member to be fixed on plunger by lining thus.Infusion appliance can be retracted plunger now, and fills syringe by being pumped in syringe by fluid.

If be installed to infusion appliance by one with (or even the part discharge) syringe crossed, its lining by be positioned in retraction plunger before, can not engage.When infusion appliance is towards (therefore making before syringe towards surface thereof) during surface thereof, holding member extends, but does not have stationary bushing.Thus lining can not be drawn back, and this syringe can not fill again.

When syringe that use together and according to the present invention does not have the plunger of oneself, after syringe, there is no projection.Therefore, in the process of transporting and process, lining seldom has movement.(as mentioned above, syringe is preferably equipped with lining below far away as far as possible).

According to another preferred embodiment, holding member is towards the joint reverse bias with lining.In a further preferred embodiment, holding member comprises one and is arranged on activating member in the hole that is formed in plunger at least partly, one locking piece be positioned at holding member and/or plunger at one end or its near, this locking piece moves to the junction surface engaging or depart from lining by holding member.

Holding member can comprise any suitable part, but preferably a cam or a bullet.Be preferably, cam or bullet are moved into by a gravity mechanism or are left offset position, and this mechanism makes holding member stretch out according to the assigned direction of plunger.

According to another preferred embodiment, activating member has a bar portion and a nose, locking piece in released position between plunger and nose.Be preferably, activating member can vertically move along the hole in plunger, is preferably holding member and comprises a pin.In a particularly preferred embodiment, the quantity of pin is more than one.

According to another preferred embodiment, plunger can be used for manually filling syringe.By adopting the plunger manually filling syringe, just manually syringe can be filled when not needing to install them into infusion appliance.This has following benefit: can fill many syringes in advance, accelerates thus to be transformed into Next process from a syringe, when infusion appliance is injection one last patient, just can fill a new syringe.In addition, can be used for manually filling some row syringes according to the plunger of this respect of the present invention, be then placed into the infusion appliance of injection patient, will drop to minimum to the requirement of independent manual filling device thus.

It is preferred that according to the plunger of this respect of the present invention body much shorter than syringe, make when lining is positioned at the forefront of syringe barrel that it can not arrive lining.In other words, plunger is slightly shorter than syringe total travel, can not engage lining (assuming that syringe is emptied completely) thus after syringe is previously used.One according to plunger 7 plunger assembly of this aspect of the present invention by by not catching and retract the lining in syringe and reduce the chance reusing (and therefore cross infection) of syringe.It is preferred that plunger is than syringe barrel much shorter, make can not arrive lining when lining is positioned at the forefront of syringe barrel.

According to another aspect of the invention, one plunger of syringe for using together with medical science injector system is provided, this syringe has the lining of an a body and engaging tubular bodies slidably, plunger comprises: a holding member, this holding member can engage the junction surface of lining releasedly, is return selectively by plunger to make lining along body; And the sensor of degree of engagement between detection plunger and lining.

Can be any suitable sensor according to the sensor of this aspect of the present invention, such as machinery, electromagnetism or the sensor of light.It is preferred that the joint completely between this sensor detection plunger and lining.This sensor is the occasion of an optical sensor, is so preferably and comprises an optical cable.

According to a preferred embodiment, optical cable is embedded in plunger, has one end to expose, and flushes, and carefully locate with the surface of plunger, make plunger just completely engage lining time this end hidden by lining.Flexible optical cable exposes in the rear end of plunger, and the other end of optical cable is connected to can respond the photodetector of the light transmitted through optical cable by a suitable loose ring.It is to be noted, plunger often moves forward and backward, so optical cable is a kind of convenience of being connected with plunger and reliable device.For the present invention, lining is made up of opaque material, and syringe barrel is transparent.

Infusion appliance is used in the environment of illumination usually, and therefore, optical fiber is " seeing " light (not having syringe hub) usually.Certainly, room light is inadequate, and plunger can be thrown light on by the infusion appliance with visible or infrared ray.When lining is closed in plunger spray, surround lighting is cut-off in the end of optical fiber, then signal to photodetector and control device.

When plunger enters piston, this device detects, and when being connected to infusion appliance control device, provides following benefit and raising:

A occasion that () fills in advance at syringe, must before startup infusion appliance, plunger be engaged with lining, make when infusion appliance is activated, lining starts to move immediately.This device can make infusion appliance safety and accurately engage lining and plunger, does not need to push away lining (this there will be undesirable waste and confusion).

If b () uses together with the syringe sensing system that will describe below, the occasion that oneself fills in advance or lining is not retracted completely at syringe, plunger can automatically advance, and to engage lining, then accurately stops.

C () is utilizing the occasion of automatically (such as electricity) lining of controlling and a plunger engaging mechanism, this sensor indicator piston maintaining body available can lock at any time.

Use if d () exists together with sensor with corresponding Gravity-lock plunger and a syringe, when syringe is first mounted, this device can send signal, to show whether lining retracts completely, confirm whether syringe is new thus, or remind operator's syringe to be previously used, and may be contaminated.

If (e) piston in retraction or filled process becomes be separated, this device also can produce a signal.According to another aspect of the invention, the one manual device filling the syringe used together with medical science injector system is provided, this syringe has the lining of an a body and engaging tubular bodies slidably, this device comprises a plunger and a holding member, this holding member can engage the junction surface of lining releasedly, is return selectively by plunger to make lining along body.

This device can make operator manually fill them when not needing all syringes to be arranged on infusion appliance.This has the benefit that can fill in advance many syringes, accelerates thus to change over Next process from a syringe, and can fill a new syringe when infusion appliance is injected last patient.In addition, device according to this aspect of the invention can be used for manually filling a series of syringe, is then placed in infusion appliance, to inject patient, drops to minimum thus to the demand of single manual filling device.

It is preferred that according to the device of this respect of the present invention body much shorter than syringe, make when lining is positioned at the forefront of syringe barrel that it can not arrive lining.In other words, this device is slightly shorter than syringe total travel, can not engage lining (assuming that syringe is emptied completely) thus after syringe is previously used.One according to the device of this aspect of the present invention by by not catching and retract the lining in syringe and reduce the chance reusing (and therefore cross infection) of syringe.It is preferred that this device is than syringe barrel much shorter, make when lining is positioned at the forefront of syringe barrel that it can not arrive lining.Engage with lining releasedly it is preferred that holding member passes through machinery and 7 or electricity.According to another preferred embodiment, can discharge and be engaged to small part and excited by a gravity mechanism.According to another preferred embodiment, joint can be discharged and excited by the retraction of plunger.It is preferred that holding member is towards the reverse bias engaged with lining.

According to another preferred embodiment, holding member comprises one and is arranged on activating member in the hole that is formed in plunger at least partly, one locking piece be positioned at holding member and/or plunger at one end or its near, this locking piece is movable to the junction surface engaging or depart from lining by holding member.Holding member can be any suitable form, and it can be a cam, also can be a bullet.

According to another preferred embodiment, activating member has a bar portion and a nose, locking piece in released position between plunger and nose.It is preferred that holding member comprises a pin.

According to a further aspect in the invention, there is provided a kind of and manually fill the method comprising the syringe of a lining of the present invention and manual filling device of the present invention, the method comprises the following steps: that this device imports in syringe barrel by (i), and this device is engaged with the inner surface of lining; (ii) excite this device, make holding member engage the junction surface of lining; And (iii) returns engaged lining along syringe barrel, simultaneously by liquid suction syringe.

According to a further aspect in the invention, a syringe used together with the medical science injector system comprising above-mentioned lining is provided.

According to a further aspect in the invention, a syringe used together with the medical science injector system comprising above-mentioned plunger is provided.

According in a preferred embodiment of the syringe of the present invention in this, it comprises an above-mentioned plunger and above-mentioned lining.

According to a further aspect of the invention, provide a detection system used together with medical science injector system, it comprises the detection piece that syringe keeper that a detection uses together with medical science injector system exists.Sensor can be any suitable type, such as optical sensor, mechanical pick-up device or electromagnetic transducer.It is preferred that it is an optical sensor.When sensor is optical sensor, then preferably detection system also comprises the reflecting element that reflects light to detection piece.This reflecting element is associated with any suitable component, such as syringe or injector system.Sensing system can comprise an optical interruption device, contact or mechanical switch component selectively.

According to a preferred embodiment, in the assembling process of keeper, usually syringe retainer (or sleeve) and spring stop be fixed on the appropriate location in keeper with any suitable measure such as cement, screw or pin.The outer surface of these two retainers has a little cannelure, and to support a slidably syringe mark, this mark is kept in place by two retainers together with mark spring.Compress Spring, between fixing spring stop and mark lug, makes mark be biased forward below thus.When not loading onto syringe, mark protrudes from before syringe retainer, and its lug leans against after syringe retainer.Second function of syringe retainer is supporting plunger and centers for plunger, and avoids being dispersed in and enter infusion appliance with Chi or from the fluid of syringe around syringe.

In brief, at least three functions can be completed according to the detection system of this aspect of the present invention:

1. body released by syringe: according to an embodiment, detection system comprises one and is slidably mounted in mark in a groove, and is biased forward by a mark spring.When syringe loads keeper, the back edge of syringe encounters mark, by it toward pusher, and compressing mark spring, until the end of mark flushes with syringe retainer.When syringe catch is opened, syringe is identified partly to be ejected forward, makes syringe be easier to be booked and take off.

2. anti-rotation device: different from other syringe 7 keeper structure of great majority, had the present invention, syringe can rotate around its axle.When a pipe is connected to syringe (it mounted after), operator needs clockwise shearing connecting portion, to be engaged by connecting portion and to lock onto syringe screw thread.In order to limit the rotation of syringe, usually need to hold it with another hands, but mark can complete this task.The front end of mark tilts and is sharp-pointed, thus gos deep into syringe, reduce the rotation of syringe thus.

3. syringe sensor: in combining with detection system, the existence of the syringe in mark detection keeper.The reflective infrared line sensor of such as SharpGP2L24 is the example of the facile sensor of appearance of the part that can be used as this system.When mark be injected pipe push back time, sensor detection mark reflective rear end, this sends signal to the controller be associated with injector system again.

The detection of electrons being connected to the syringe of the controller be associated with injector system improves the functional of infusion appliance and safety.Such as:

A (), in order to avoid the cross infection between patient and patient, it is important for allowing the next one to fill or change syringe before injection in infusion appliance.

B () have employed the occasion of plunger Shu lining locking mechanism of operated by weight, syringe should only have when injector head horizontal orientation (when namely unclamping when piston) Shi Caineng is removed, if attempt to take off in upright position, the controller of infusion appliance can remind operator.

C (), for electrically-energized plunger lock, after having installed syringe, the controller of infusion appliance can automatically lock.

D () is the same with any infusion appliance, only when lining departs from plunger, this syringe just can take off (otherwise lining can depart from syringe barrel, contaminanted fluid or medicine likely overflow).For the embodiment that some has described, syringe can only forward (injection) stroke at the end of be removed.Thus controller must arrive when sensor notice syringe is removed after injection and just allow plunger to retract.

E (), for all syringe keepers, is opened or fault in order to avoid unexpected in injection process, is importantly completely locked on appropriate location by device before using it.If syringe keeper and injector system are not engage completely, so it should be noted that mark can not with contiguous sensor crossing (avoiding infusion appliance to operate) before keeper rotates to latched position completely and syringe exists.

Similarly, those skilled in the art should give understanding, need not identify but substitute also to have the identical benefit with other by the structure of the testing agency of some other forms.Other benefit according to the sensing system of this aspect of the present invention comprises:

A () is protected sensitive electronic proximity sensor to exempt to damage or the impact of scattered injecting fluid of disturb sensor completely.

B () cleans owing to can take off according to the keeper of some embodiment, then sensor need not be exposed to washing fluid.

C () system is solid state (except mark), therefore strong and reliable.According to a further aspect in the invention, there is provided one by the medical science injector system of the fluid injecting in syringe to patient, syringe has the lining of an a body and engaging tubular bodies slidably, this lining comprises the inner surface that has junction surface, this junction surface can be engaged releasedly by a plunger, injector system comprises: (i) drives the plunger of lining, and this plunger comprises the retaining part that engages the junction surface of lining releasedly; And (ii) syringe keeper, it comprises: a frame member that can hold syringe barrel; And, one releasedly syringe is locked in frame member can pivoting catch.It is preferred that also provide one to be arranged on positioner on frame member, with the precalculated position making one end of syringe be arranged in frame member.

According to a preferred embodiment, syringe keeper comprises a junction surface, thus can engage a medical science infusion appliance simply releasedly.It is preferred that the junction surface of syringe keeper comprises a locking piece.The locking piece of syringe keeper can comprise any suitable locking device.It is preferred that it comprises a groove or a pin.According to another preferred embodiment, medical science injector system also comprises: (Shu) is applicable to the pipe being connected to syringe, to be imported by fluid or to derive syringe; And (10-makes pipe be connected to the connector of container containing medical fluid, the fluid in container is made to enter syringe thus, wherein connector comprises a hollow pin post, to form the hole that penetrates this stopper when the stopper worn in container perverse with this pin post.

It is preferred that connector also comprises: (i) has the male luer part of locking ring; And the separate section that (ii) can make pin post forever be separated with male luer part.It is preferred that this separate section comprises a frangible cervical region.It is preferred that this pin post comprises one Barb portion, take off from container to stop pin post.Understandable, various connection can be included in any connection means as known in the art, and such as bayonet socket, springlock or screw connect.Pin post can rupture, to leave male luer end on the tube end of association.

Pin post, the preferably molectron of frangible (opening or sealing) pin post and male Luer connector device can for good and all be connected to pipe and syringe.Use this molectron, this device preferably can only fill once, the medical fluid of multi-dose vials can not be infected or another patient of cross infection thus.

If pin post connector is as the frangible part manufacture of connector, and is permanently connected to pipe and syringe, be just difficult to fill again syringe and thus to bottle or another patient's cross infection.In addition, such structure also reduces material cost.Syringe, pin post connecting component apparatus and frangible spike can be used as an assembly and provide.It is preferred that pin post connector fractureed before pipe is connected to intravenous catheter and is therefore connected to patient.

According to another preferred embodiment, medical science injector system also comprises a fixture between pipe and a male Luer connector of syringe, the removable locking screw thread entering male Luer connector of this fixture, thus by tube grip in male Luer connector.It is preferred that fixture comprises a clamping part, to improve the clamping between it and pipe.Clamping part can be any suitable type, all circles if any barb, has the tooth of barb, screw thread, zigzag holder, convex ridge (such as circular ridge), rear flange or inner conical.In a preferred embodiment, fixture is that widow changes obvious (tamperevident).

According to a preferred embodiment, medical science injector system also comprises a basic part and a sensor, to detect the direction of syringe keeper comparative basis part.It is preferred that the angle between sensor detection syringe keeper and basic part.

According to another preferred embodiment, provide a switch, the movement that this switch automatically triggers according to its direction or suppresses plunger in body.This switch can be excited by any suitable mechanism.According to a preferred embodiment.It is excited by a gravity mechanism.

According to a preferred embodiment, also provide the controller of a control plunger.It is preferred that the operation at least partially of infusion appliance is automatic by electronic equipment or software.Such as, the tilt switch that infusion appliance can have one or more gravity or syringe angle to handle, automatically to start or to suppress the movement of at least syringe in operation infusion appliance process.

According to another preferred embodiment, system has a controller and a sensor, the direction of sensor detection syringe keeper comparative basis part.Sensor can detect any suitable feature, but the angle preferably between its detection syringe keeper and basic part.

It is preferred that controller is exercisable, with mobile plunger, thus test is connected to the opening of the catheter in blood vessel of syringe by a pipe.At present, this must check by hand, will avoid the danger that may make blood vessel damage He break through training careful in a large number.

It is preferred that adopt a lining as described, plunger, syringe keeper, one or more sensor and/or syringe according to the medical science injector system of this embodiment.

Having the occasion of sensor, so it is preferably connected with a controller be associated with injector system, to control the movement of plunger further.It is preferred that this connection can make plunger and lining engage when not moving lining, and move lining thus.According to a preferred embodiment, this connection can make lining be locked in plunger releasedly.According to another preferred embodiment, this connection makes lining lock releasedly

Due to plunger.According to another preferred embodiment, this connection can detect the syringe used.

According to another preferred embodiment, if sensor detects the lining before the position of its maximum retraction state, then produce a signal.According to another preferred embodiment, this connection can detect error.If it is preferred that lining and plunger separate too early, then produce a signal.

According to another preferred embodiment, this connection can make plunger move, with the fluid in filled syringe or exhaustjet pipe.Such as, connection can make plunger move, and it also can be made not move.This phenomenon because of various reason or can occur according to various exciting.Such as, after use, if syringe is not removed, or before the use, if syringe is not engaged to a specific degree, then plunger can not move.According to another preferred embodiment, if syringe will be attempted taking off syringe in some direction, then produce a signal.If it is preferred that attempt taking off syringe when syringe is in a substantially vertical direction, then produce signal.

According to another preferred embodiment, produce a signal, instruction syringe is not removed.If it is preferred that syringe is not removed after usage immediately, then produce signal.

According to a preferred embodiment of the present invention, a kind of method medical fluid in a sealed container being filled to a syringe is provided, this syringe uses together with a medical science injector system, and described method comprises following step: (i) makes the anterior opposite rear of syringe rise; (ii) make plunger advancement to the position corresponding to predetermined patient's metering in syringe; (iii) with the movement of the sequential control plunger of movement forward and backward, with exhaustjet pipe and any air be connected in the pipe of container bottle, and the fluid of required metering is extracted in syringe.

According to another preferred embodiment of the present invention, a kind of method medical fluid in a sealed container being filled to a syringe is provided, this syringe uses together with a medical science injector system as the described herein, and described method comprises following step: (i) makes the anterior opposite rear of syringe rise; (ii) make plunger advancement to the position corresponding to predetermined patient's metering in syringe; (iii) with the movement of the sequential control plunger of movement forward and backward, with exhaustjet pipe and any air be connected in the pipe of container bottle, and the fluid of required metering is extracted in syringe.

According to these methods, all outside airs can be got rid of, significantly to reduce the chance that antibacterial enters fluid and patient.In addition, this method provide and fill in one operation and purify the convenience of syringe and pipe and favourable approach, compared with traditional method, the cost and the syringe that also reduce material therefor fill speed.Can carry out in a combination operation syringe and the filled of the extension be associated and purification.According to another preferred embodiment, all elements of fluid passage are connected as a sealing system.

According to this embodiment, the combining ability of the air pressure in bottle and the partial vacuum in syringe produces a pressure differential larger than traditional extraction system between two containers, accelerates syringe thus and fills speed.

In a preferred embodiment of filled method, pin post connector is driven into stopper and after selecting automatic " filling " function in infusion appliance, infusion appliance completes the in check movable program of piston, make air transfer all in syringe and pipe in bottle, and by the fluid suction syringe of required dosage.

According to another preferred embodiment of the method, it also comprises the step automatically restricting plunger moving direction according to the direction of syringe.It is preferred that when plunger is configured to can move forward or backwards when its front portion is promoted relative to its rear portion, can only forward to moving when being configured to rear portion relative to its forward lift.This is by guaranteeing that bubble decreases the chance that bubble is injected into patient after syringe.Preferably when this step is made at deaeration by tilt switch or sensor and carried out filled, syringe tilts, and anterior rising is realized, the air stayed in syringe is dropped to minimum.

According to a further aspect in the invention, provide one to be the method for patient injection with medical science injector system described herein, its step comprises: (i) makes plunger engage with lining; (ii) lining is driven along syringe barrel; And the fluid in syringe is discharged in patient by (iii).

According to a further aspect in the invention, there is provided a kind of method that syringe keeper as the described herein is engaged with a medical science infusion appliance as claimed in claim, it comprises following step: (i) makes the junction surface of syringe keeper align with the complementary portion in medical science infusion appliance; And (ii) makes syringe keeper engage with medical science infusion appliance.

According to a preferred embodiment, also comprise the following steps: to detect the degree of engagement between syringe keeper and medical science injector system.

According to another aspect of the invention, there is provided a kind of method that syringe keeper described herein and medical science infusion appliance described herein are thrown off, it comprises following step: (i) makes the junction surface of syringe keeper and medical science infusion appliance throw off; And (ii) takes off syringe keeper from medical science infusion appliance.

It is preferred that also comprise the following steps: to detect the disengaging degree between syringe keeper and medical science injector system.

According to another aspect of the invention, an a kind of method syringe being loaded the syringe keeper be associated with medical science injector system described herein is provided, it comprises the steps: that a syringe barrel is inserted in frame member by (i), makes pallet displacement; And (ii) makes detent mechanism get back to its offset position, to engage syringe, is remained in frame member by syringe thus.

According to another aspect of the invention, provide the method that takes off syringe from the syringe keeper be associated with medical injection guard system described herein, it comprises the steps: that (i) release latch is to unclamp syringe; And (ii) exits syringe from frame member.

According to another aspect of the invention, provide a kind of method syringe being loaded the syringe keeper of medical science injector system described herein, it comprises following step: syringe barrel is inserted in the support of syringe keeper by (i); And (ii) detects the existence of the syringe in keeper with a detection piece be associated with detection system.

According to another aspect of the invention, a kind of method of taking off syringe from the syringe keeper of medical science injector system described herein is provided, the method comprises the steps: that (i) returns syringe from frame member, and (ii) detects in keeper with the detection piece be associated with detection system and do not have syringe.It is preferred that be also included in the step of automatic retraction plunger after syringe is return.It is preferred that be also included in the step restricting the retraction of plunger before syringe is return.According to a preferred embodiment, be also included in the step impelling plunger to retract after syringe is return.

According to a further aspect in the invention, a kind of method with medical science injector system described herein, syringe hub being connected to a plunger is provided, the method comprises the steps: that plunger is imported a syringe barrel by (i), be engaged slidably at this body neck bush, and plunger is engaged with the inner surface of lining; And (ii) excites plunger, holding member is made to engage the junction surface of lining.It is preferred that also comprise the step of the degree of engagement between detection plunger and lining.

According to a further aspect in the invention, provide a kind of change to comprise the method for the medical science injector system of a syringe keeper, it comprises following step: (i) changes this syringe keeper with a syringe keeper described herein; And (ii) connects a plunger described herein.

According to another aspect of the invention, provide a kind of change to comprise the method for the medical science injector system of a syringe keeper, it comprises following step: (i) changes this syringe keeper with a syringe keeper described herein; And (ii) connects a plunger described herein.

In accordance with a further aspect of the present invention, provide the method for a kind of change one medical science injector system, it comprises following step: (i) changes this syringe keeper with a syringe keeper described herein; And (ii) connects a plunger described herein.

According to a further aspect in the invention, provide a kind of method changing medical science injector system, it comprises the step of increase by detection system described herein.

Accompanying drawing explanation

Fig. 1 shows the prior art injection device that is equipped with syringe;

Fig. 2 a shows each component for syringe of the present invention;

Fig. 2 b shows a combination syringe;

Fig. 2 c shows the combination syringe being combined with a plunger of Fig. 2 b;

Fig. 3 a is the tilt filter figure of lining;

Fig. 3 b is the side view of lining;

Fig. 3 c is lining after combination and the sectional view of sealing member;

Fig. 3 d is the front view of lining;

Fig. 3 e is the rearview of lining;

Fig. 4 a shows other structure in channel form of the bonding part of lining;

Fig. 4 b is the sectional view of lining and bonding part;

Fig. 4 c is the sectional view of lining and bonding part, wherein has traditional sealing member and a guide edge extended;

Fig. 4 d is the sectional view of lining and bonding part, wherein has the sealing member with lining one;

Fig. 4 e is the sectional view of lining and bonding part, wherein has an O-ring seals;

Fig. 4 f further illustrates other structure of lining bonding part;

Fig. 5 shows the size as an example of lining;

Fig. 6 is the sectional view of the plunger engaging lining;

Fig. 7 is the sectional view of the possible embodiment of of plunger/lining interlocking structure;

Fig. 8 is the front cross sectional view intercepted along the line A-A of Fig. 7;

Fig. 9 shows another structure of Fig. 8;

Figure 10 shows another example of plunger/lining interlocking structure;

Figure 11 is the front cross sectional view intercepted along the line A-A of Figure 10;

Figure 12 shows another structure of Figure 11;

Figure 13 shows another structure for plunger/lining interlocking structure;

Figure 14 is the front cross sectional view intercepted along the line A-A of Figure 13;

Figure 15 shows another plunger/lining interlocking structure;

Figure 16 is the front cross sectional view intercepted along the line A-A of Figure 15, showing in detail cam;

Figure 17 shows another example of plunger/lining interlocking structure, wherein has the lining locking mechanism that an annular is passive;

Figure 18 a is the side view of the syringe keeper with pallet;

Figure 18 b shows syringe keeper and the pallet of figure, and wherein syringe and lining are positioned at syringe keeper;

Figure 18 c is the syringe keeper of Figure 18 a and the tilt filter figure of pallet;

Figure 18 d is the tilt filter figure of the syringe keeper of Figure 18 b, pallet and syringe;

Figure 18 e is the tilt filter figure of syringe keeper of the present invention, pallet and syringe;

Figure 19 is the sectional view of the syringe keeper/syringe be combined in the sleeve pipe of infusion appliance, and wherein syringe is kept by a pallet; ,

Figure 20 is the sectional view intercepted along the line A-A of Figure 19;

Figure 21 is the sectional view intercepted along the line B-B of Figure 19;

Figure 22 a is the sectional view of the syringe keeper/syringe be combined in the sleeve pipe of infusion appliance, and wherein syringe is kept by a pallet, the figure illustrates illumination part;

Figure 22 b shows the structure had from ejecting mechanism of Figure 19;

Figure 23 a shows and is applicable to the plunger that syringe manually fills device and corresponding keeper;

Figure 23 b shows a syringe and a syringe keeper, comprising syringe front flange and the corresponding swallow-tail form pallet of a depression;

Figure 23 c is the axonometric chart of the syringe with depression front flange;

Figure 23 d is the sectional view of the syringe with depression front flange;

Figure 23 e is the sectional view of swallow-tail form pallet of the present invention;

Figure 23 f shows other different structure of pallet of the present invention with sectional view;

Figure 24 shows connection and the direction of some key elements under the orientation filled continuously in system;

Figure 25 shows an example for making the stopper of medicinal fluid bottle open the pin post with barb of an extraction fluid bore;

Figure 26 shows each view of an example of the molectron of male Luer connector and frangible spike;

Figure 26 a is the molectron oblique view before assembly of road strategic point connector and frangible spike, locking ring and pipe;

Figure 26 b is the molectron Y-direction sectional view after assembling of road strategic point connector and frangible spike and locking ring;

Road strategic point connector after Figure 26 c shows and assembles and combine and the molectron of frangible spike, locking ring and pipe;

Figure 26 d shows the road strategic point connector of pin post after frangible cervical region " is fractureed " and the molectron of frangible spike and locking ring;

Figure 27 shows male Luer connector and has the frangible spike of barb and the example of locking ring, as follows:

Figure 27 a shows road strategic point connector and the Y-direction sectional view with the frangible spike of barb, locking ring and the pipe be connected;

Figure 27 b shows the road strategic point connector after assembling and combination and has the frangible spike of barb and an example of locking ring;

Figure 27 c shows road strategic point connector and has the frangible spike of barb, locking ring and one of the pipe be connected shorter example;

Figure 28 shows the molectron of road strategic point connector and a frangible spike, and it is permanently connected to corresponding extension pipe and syringe, with formed one be patient injection can not reusable assembly;

Figure 29 shows a typical syringe male luer lock connector;

Figure 29 a is total figure of the road strategic point locking connector of Figure 30;

Figure 29 b is a Y-direction sectional view typically injecting pipeline strategic point locking connector;

Figure 30 is by the Y-direction sectional view of common flexible plastic tube pushed away on a strategic point connector end, common road;

Figure 31 shows each view according to the basic of a fixture of the present invention or common form;

Figure 31 a is the side view of plain clamp;

Figure 31 b is the oblique view of plain clamp;

Figure 31 c shows plain clamp with Y-direction sectional view;

Figure 31 d is one by the Y-direction sectional view of flexible plastic tube on strategic point connector end, Tui mono-tunnel, and wherein plain clamp is pressed in the cloudy locking screw thread of road strategic point locking syringe;

Figure 32 shows the fixture with all barb circles;

Figure 32 a is the oblique view that its outer surface has a fixture of some annular barb circles;

Figure 32 b is the Y-direction sectional view that its outer surface has a fixture of some annular barb circles; Figure 32 c is a Y-direction sectional view with the fixture of barb being pressed into the cloudy locking screw thread of road strategic point locking syringe, to be clipped in by a pipe on the end of corresponding male Luer connector;

Figure 33 shows the fixture with pin thread;

Figure 33 a shows the plain clamp with pin thread;

Figure 33 b shows has positive externally threaded plain clamp, with the addition of zigzag handle part in the rear end of fixture;

Figure 33 c is the Y-direction sectional view that its outer surface with the addition of positive externally threaded plain clamp;

Figure 33 d is a Y-direction sectional view with positive externally threaded fixture, and this fixture screws in the cloudy locking screw thread of a road strategic point locking syringe, to be clipped in by a pipe on the end of corresponding male Luer connector;

Figure 33 e is a Y-direction sectional view with positive externally threaded fixture, adds a circular ridge at the inner surface of this fixture;

Figure 33 f is a Y-direction sectional view with the fixture of convex ridge in positive external screw thread and an annular, and this fixture is threaded in the cloudy locking screw thread of screw-in one tunnel strategic point locking syringe, to be clipped in by a pipe on the end of corresponding male Luer connector;

Figure 34 and 35 shows the flange of fixture rear end;

Figure 34 a is the side view that its rear end has a Threaded clamp of conventional type;

Figure 34 b is the rearview that its rear end has a Threaded clamp of conventional type;

Figure 35 a is a side view on the periphery of flange with the tamper Threaded clamp of reverse hook teeth;

Figure 35 b is a rearview on the periphery of flange with the tamper-proof Threaded clamp of reverse hook teeth;

Figure 36 is the side axonometric chart of a syringe keeper, wherein has a bonding part that can engage with medical infusion appliance releasedly and detects the detection system that syringe exists;

Figure 37 a is the exploded perspective view of a syringe keeper, and this keeper has the detection system that a bayonet socket adnexa, the syringe loaded onto and detection syringe exist;

Figure 37 b is the keeper of Figure 37 a and the sectional view of syringe;

Figure 37 c shows one for the syringe identification piece of syringe sensing system;

Figure 37 d is the sectional view of the infusion appliance nose with keeper lock;

Figure 38 a is the Y-direction sectional view of a syringe keeper, wherein has the detection system that bayonet socket adnexa, the syringe loaded onto and detection syringe exist;

Figure 38 b is the syringe keeper and the transverse sectional view of syringe that intercept along Figure 38 a line MM;

Figure 38 c is the syringe keeper and the transverse sectional view of syringe that intercept along Figure 38 a line LL;

Figure 38 d is the syringe keeper and the transverse sectional view of syringe that intercept along Figure 38 a line KK;

Figure 38 e shows the syringe identification piece for syringe sensing system;

Figure 39 a is the sectional view of a syringe in syringe keeper, it illustrates a preferred embodiment of an engaging mechanism during plunger motion between lining and plunger, for displacement fluids from syringe;

Figure 39 b shows at the syringe of the plunger motion period Figure 39 3 by fluid suction syringe and syringe keeper;

Figure 40 is the Y-direction sectional view of a plunger and lining, it illustrates a preferred embodiment of the sensor of the joint between detection lining and plunger;

Figure 41 shows an infusion appliance, wherein have injection (under) tilt switch of position;

Figure 42 shows an infusion appliance, wherein have filling (on) tilt switch of position.

Detailed description of the invention

Common injecting systems for similar applications of the present invention comprises an automated injection device 100.This injection device has one to enter keypad 110, to input data and observed data respectively with the data of display 120 usually.The data type of input system can comprise injection speed and volume.The system of prior art comprises pressure jacket or sleeve pipe 140 that one is connected to injection device 100, to keep a suitable syringe 300.Syringe 300 is connected to patient's (not shown) by pipe 400.The prior art structure of injection device as shown in Figure 1 has many shortcomings.First, in order to syringe 300 is installed to injection device 100, must first take off or open sleeve pipe 140, make syringe 300 load sleeve pipe 140 from behind and by connect again or syringe is fixed therein by closed casing 140.In some cases, sleeve pipe 140 is completely enclosed as shown in Figure 1, requires after loading onto syringe 300, to connect pipe 400 and took off pipe 400 before unloading syringe 300.Which increase the time of installing needed for syringe, add the risk of the blood from overflowing of pollution.System of the present invention is exactly for these shortcomings, and the present invention makes syringe 300 directly from loading injection device 100 above, does not need to take off sleeve pipe 200, syringe 300 can be loaded and insert injection device 100 again.

In order to make syringe 300 can easily from inserting above, syringe itself can not have flange.That is, the exterior cylindrical surfaces of syringe is without any the interference protrusion be usually present in syringe.

Fig. 2 a shows syringe of the present invention, illustrated therein is the body of syringe 300, and the sealing member 320 of a lining 310 and response inserts in this body.Under the state of assembling lining 310 and body 300, syringe as shown in Figure 2 b.Lining and sealing member can be manufactured into a component (as shown in figure 4d).For preferred embodiment, lining is made up of semirigid plastic, and sealing member is made up of elastomer.In fact, the syringe barrel of medical fluid that is that the manufacturer of syringe can go out to sell out or that be preinstalled with the aequum that will be expelled in patient, this fluid is retained in body by the combination of lining and sealing member.

In order to the medicine in injection injection pipe, a plunger 130 being operably connected to injection device 100 engages with the inner surface of lining 310, and is driven according to required controlled motion by injection device 100.When plunger 130 is driven into syringe barrel 300, lining 310 and sealing member 320 will be made towards the other end relative movement of body 300, and medicament is injected into patient's (not shown) through pipe 400 thus.Lining of the present invention can be made up of any suitable such as polypropylene or cinnamic semi-hard plastic, and sealing member can be made up of the elastic material of such as Santoprene, Kraton, Improflex Kraiburg etc.

Fig. 3 shows lining 310 from different angles.In fact, the inner surface of lining 310 shows cannelure 311.The cross section of groove can adopt any suitable shape as shown in fig. 4 a, comprises semicircle, squares and triangles cross section.In addition, Fig. 4 c shows the lining combined with sealing member 320, and this lining has the guide edge of the extension on sealing member top, to improve the sealing under pressure.Fig. 4 d illustrates the lining and sealing member that are combined into a part, and the advantage of this part is reduction of manufacturing cost.This structure obviously also has other advantage: such as (1) is if use such as polyacrylic low-friction material, add greasy property, (2) silicone or other lubricant is eliminated, (3) decrease microgranule in syringe, and assembly expenses is reduced/saved in (4).The object of this groove will be explained in detail below.Fig. 4 e illustrates that one has the lining of a lip ring 312 at cross section further.

Obviously, the size of lining depends on particular syringe used.As an example, notice that they have size about as shown in Figure 5 usually.

The end of injection piston 130 is made and can effectively be engaged with the inner surface of lining 310, as shown in Figure 6.Also can be clear that cannelure 311 defines the space between the surface of the wall of lining 310 and the end of injection piston 130.This joint between plunger 130 and lining 310 such as provides form to coordinate, the power that injection piston 130 is driven is delivered to lining 310 effectively, lining moves forward with the inner surface of the sealing member 320 (not shown in Fig. 6) be connected along syringe 300, the inclusions of exhaustjet pipe thus.

It is to be noted, injection piston 130 is for emptying priming fluid syringe.But often just just fill the new syringe of sky in injection device so before the use, this just requires that lining and sealing member are retracted by plunger 130.Can see, plunger 130 self cannot clamp or keep lining 310.Therefore, another mechanism is just needed to make plunger 130 effectively also it can be made to draw back lining and sealing member from syringe barrel by clamp sleeve 310.Groove 311 provides such mechanism.

As shown in Figure 7, when plunger is contracted, some pins 142 stretch out plunger 130 at the position of groove or groove 311.When the plunger 130 of injection device is drawn back, these pins 142 filled out in groove or groove 311 make lining 310 draw back from syringe barrel 300 as keeper.The mechanism making pin 142 enter groove or groove 311 can adopt as will many forms of discussing in detail of composition graphs 7 to 16.

In one embodiment as shown in fig. 7, plunger 130 can comprise drive rod 140, stretches out a cam portion 141 from the nose of this drive rod 140.Cam portion 141 is bars of an ellipse, and when plunger 130 inserts in syringe barrel 300, this bar is in horizontal plane.Pin 142 leans against the outer surface of cam portion 141, and is biased towards cam portion 141 by spring 143.In this position, the outer end of pin 142 is positioned at the surface or below of plunger 130.Once plunger/lining/seal configuration arrives syringe barrel 300 end, and when requiring to retract from body, drive rod 140 can be made to rotate around its axis, make cam portion 141 can be positioned at vertical plane as shown in Figure 8.When cam portion 141 rotates, all pins 142 towards the surface offset of cam portion 141 are released towards the surface of plunger 130, make their outer end stretch out plunger 130 and be accommodated in as shown in Figure 7 in groove or groove 311.In this position, lining 310 is kept by plunger 130 and can draw back from syringe barrel 300.As mentioned above, this mechanism can adopt various ways, and one of them form as shown in Figure 9.In this case, cam portion 141 has and makes four pins 142 stretch out from plunger 130 square cross section be accommodated in groove or groove 311.The head of pin 142 is put towards four lateral deviations of cam portion 141, and can be biased towards four of cam portion 141 angle when cam portion 141 rotates, and makes pin 142 stretch out the surface of plunger 130.

In another embodiment of the mechanism of the drive pin 142 such as shown in Figure 10 to 12, cam portion 141 substitute by the conical section 144.In this embodiment, pin 142 is biased towards the outer surface of conical section 144 by the spring 143 as the same embodiment.In use, plunger 130 inserts syringe barrel 300 and lining 310, and drive rod 140 is pressed against the front surface 131 of piston element 130 as far as possible.In this position, pin 142 is leaned against the narrowest part of conical section 144 and is biased by the outer surface of spring 143 away from plunger 130.Plunger 130 retract front or time, drive rod 140 be pulled away from surface 131, pin 142 is slided upward along the outer surface of conical section 144.This makes pin 142 be pushed out and stretches out the outer surface of plunger 130 and be accommodated in groove or groove 311.Lining 310 is kept by plunger and can move along syringe barrel 300 thus.This structure also makes four pins used be accommodated in groove or groove 311, as shown in figure 12.The pyramidal structure of Figure 10-12 also can be used in the locking mechanism of " gravity operation ", and when a particular orientation taked by syringe, plunger 130 can only keep lining 310 thus.When requiring to avoid reusing syringe between patient, such structure (as shown in Figs. 13 and 14) is particularly useful.This risk for the interpatient cross infection of minimizing or pollution is very favourable.

It should be noted that be preferably, fill in process at syringe and make injection device towards surface thereof, to guarantee that air remains on syringe outlet, be convenient to be removed before injection.In addition, comparatively it is appreciated that make injection device towards having a down dip in injection process, to be kept any remaining air in syringe by lining, any air after injection is all retained in the pipe between syringe and patient, thus can not enters in patient body.

Generally speaking, new syringe is equipped with the lining and seal configuration that are placed on complete retracted position, near namely after syringe barrel 300.Also get used to plunger of retracting after every use.In one embodiment, down, install syringe by the front end of tubular shell in the injection device, such syringe aligns with plunger in injection device 100 direction.Consequently, lining 310 engages with plunger 130.It should be noted that, if loaded onto a syringe used, lining would not gnaw plunger that conjunction retracts completely (namely due to lining can not complete retracted position in syringe barrel).In order to filled syringe, so want vertical tilt built with the injection device of syringe.When injection device is by vertical tilt, fall in the cylindrical chamber 132 of weight bar element 145 as shown in figure 13 in plunger 130.When weight bar element 145 falls, conical section 144 makes pin 142 be pushed out to protrude the outer surface of plunger 130, with in the groove being received in lining 310 or groove 311.Therefore, lining 310 keep by plunger 130.During present dynasty's surface thereof, plunger 130 (by wing drop switch and all control) can push away lining 310 and corresponding sealing member 320 (not shown) towards the top of syringe barrel 300, until plunger again can not advance, sealing member 320 is resisted against the front end of syringe barrel 300 upward, discharges undesirable air.

When reverse drive plunger, lining 310 and sealing member 320 are retracted, and just can fill syringe.In order to be expelled in patient body by the inclusions in syringe, injection device will turn back to position down, and advancing along syringe barrel 300 once plunger 130 just can inclusions in exhaustjet pipe again.When injection device is orientation down, weight bar element 145 turns back to position the most forward in chamber 132.This makes pin 142 divide this true due to spring 143 and the narrow portion that now can be resisted against conical section 144 due to the head of pin 142 and be retracted in below the outer surface of plunger 130.After completing injection process, plunger 130 from syringe barrel 300 automatic retraction, and because pin element 142 indentation enter plunger 130, lining 310 just no longer keep by plunger, thus stay the foremost portion of syringe barrel 300.Therefore, under condition due to advance along syringe barrel 300 at lining 310 (being at least part), when injection device is towards surface thereof, lining can not engage with the plunger 130 of retracting completely and can not be kept, so used syringe (be least recently used, or be loaded on afterwards) can not use again.

If injection device rises to again in upright position, weight bar element 145 falls due to gravity, makes all pins 142 extend across the outer surface of plunger 130.If plunger 130 advances in body 300, the rear end of lining 310 can not be advanced through due to stretching out of pin.This syringe of the operator of alarm set is previously used by, thus points out them to change an original syringe.

Another possible embodiment of locking mechanism relates to the cam portion 154 using and be connected to drive rod 133, and this drive rod 133 is included in plunger 130 body.Figure 15 and 16 shows this structure.When plunger 130/ lining 310/ sealing member 320 combines and advances in syringe barrel 300, the nose that the direction of drive rod 133 makes cam portion 134 be arranged to it is seen below sensing from Figure 15 and 16, and any part of such cam portion 134 does not stretch out plunger 130.Then once require that lining 319 and sealing member 320 (Figure 15 or 16 not shown) are retracted, drive rod 133 rotates along the direction of curve arrow, makes the nose of cam portion 134 stretch out the surface of plunger 130 and be received in groove or groove 311.By this way, lining 310 and be connected sealing member 320 keep by plunger 130, and also to retract in syringe barrel when plunger 130 is retracted.It is to be understood that, the pin that all pin elements 142 (Fig. 7 to 14) are not necessarily single, it can be the ring of the entirety in plunger 130, in advancement stage, this integral loop can flush with the surface of plunger 130 or below this surface, and may expand to the surface of stretching out plunger 130 and be contained in groove or groove 311.

Figure 17 shows such structure, and in the structure shown here, plunger 130 is divided into two parts, and one is main part 139, and another is nose 136.Connecting this two-part is a drive rod 135, and its front end is embedded in nose 136.By pushing away drive rod 135 forward, making nose 136 vertical shift a bit of, thus form gap 137 between main part 139 and nose 136.The longitudinal end in gap 137 is chamfered, and form vacancy 138, its size depends on the size in gap 137.An expandable circle 800 is placed in vacancy 138.This can be a rubber O shape circle, becket clevis or other suitable ring-type element any.Circle 800, towards its center-biased, makes it be positioned at vacancy 138 as far as possible, and below the surface of plunger 130.When plunger 130 moves along syringe, just such location will be presented forward.

In order to lining 310 of retracting, drive rod 135 moves backwards, gap 137 is closed, also makes vacancy 138 diminish.This radially will push away again circle 800 so that will stretch out plunger 130 and be contained in groove or groove 311, make lining be held in plunger 130 thus.

It is to be understood that groove or groove 311 in fact do not need the whole circumference around lining 310 inner surface, but can adopt have some single grooves or depression in the surface of lining 310, to hold each pin stretched out from plunger 130.It is to be understood that if bar 135 is actuators of injection device, plunger body 139 is restricted by a such as dead turn shown in Figure 39 a and 39b, above-mentioned lining keeps the automatic exercise of function energy.

Describe below in conjunction with Figure 18 a-e to 21 and syringe barrel 300 is installed and remained in injection device 100.Figure 18 a to 18d shows each view of syringe support (cradle) in this embodiment, and wherein frame member is a sleeve pipe 200 and relevant pallet 500.In embodiment shown in Figure 18 e, frame member is a support 205 containing syringe barrel 300.

Sleeve pipe 200 the most left (afterwards) end (from view) insert injection device accommodation opening in, and syringe barrel 300 as can be seen first slip into sleeve pipe 200 backwards by the beveled appearing at the right-hand side of sleeve pipe 200.It is a sleeve pipe 200 containing syringe barrel 300 that each view of Figure 18 b and d shows this embodiment medium-height trestle part.Also can see that lining 310 is positioned at the cardinal extremity of syringe 300 as previously mentioned be connected sealing member 320.Pallet 500 is connected to sleeve pipe 200 pivotly, as shown in Figure 19,20 and 21.Syringe keeper 200 is bonded on the nose 10 of injection device (not shown).Be connected by pallet hinge 510 between pallet 500 with keeper 200.Spring 540 makes one end of pallet 500 be biased towards the direction of the body leaving sleeve pipe 200, and such syringe catch 520 is towards upper offset and as shown in figure 19 through sleeve pipe aperture 530.When syringe barrel 300 is inserted in sleeve pipe 200, syringe catch 520 due to syringe slip over syringe catch 520 angled top surface, driven by operator) cause towards to exert oneself and towards bottom offset.Once syringe barrel 300 inserts sleeve pipe 200 (being determined by syringe stopper ring 210) completely, spring catcher 520 is fastener oppositely, be in the position of its steady statue, to engage the front portion 330 of syringe barrel 300, thus it remained in sleeve pipe 200.This retentivity is by force to being enough to bear when driving injection device forces plunger 130 to enter body 300 with the pressure suffered by syringe during exhaustjet pipe inclusions.In fact, the upright leading edge 521 of pallet 520 is inclined to that it is parallel with the leading edge of collar aperture 530, and the leading edge of collar aperture 530 self also tilts similarly.This angle carefully will be chosen and be greater than 90 degree, and what make flange 330 pairs of apertures 530 applies moment towards leading edge.Like this, this joint forms a wedge or swallow-tail form engages, thus pallet 520 just can be avoided to unclamp when plunger makes syringe forward, thus provides a very reliable holding device.

In addition, syringe sleeve pipe 200 closely cooperates with the syringe barrel 300 inserted.Contribute to supporting the syringe under high pressure in the injection device like this, to prevent from expanding, the low cost syringe that wall is thinner can be used thus.Sleeve pipe 200 is also preferably transparent, and can see the inclusions (such as determining whether have air in syringe) of syringe so without barrier, syringe self is also transparent.

As mentioned above, such action of any part of taking off injection device is not needed just can to complete from slipping into an accommodation sleeve pipe above syringe simply as long as this structure makes syringe load injection device.In addition, the direction determining syringe and lining by specific means is not needed.Like this at assembling syringe with use every day during injection device and save a large amount of time and work, and make the relatively simple for structure of injection device.

Figure 22 a shows another preferred embodiment, wherein there is an illuminator in light emitting diode (LED) 4200 form, these light emitting diodes are arranged on rear (the most left) end of the exposure of syringe sleeve pipe 200, some light are accepted and wall along sleeve pipe is propagated.Owing to using any thin, intensive, transparent material, the major part of the light be accepted is in vertical and horizontal internal reflection, and the front end of the sleeve pipe shown in arrow 4250 produces scattered light.The slanted front end of sleeve pipe 4255 preferably covers shape (such as sand milling) in frost, to reach maximum scattering, and can see in a wider angle.Any suitable light source all can use, but they be preferably focused or by what reflect, make most light source export project towards sleeve pipe.Therefore, in an illustrated embodiment, these light sources are some light emitting diodes.

Light source can have shades of colour, and/or is pulse, to produce many attractive effects, and can be used for reminding operator, such as, takes off syringe.

Should it is to be noted, due to the fact that, when namely sometimes syringe being connected to patient, correctly patient skin is entered in order to such as examine pin, lining of will retracting makes blood be withdrawn in syringe through pipe 400, so sometimes can find that the blood of patient enters pipe 400 and syringe 300.Because syringe can from loading onto above, pipe 400 (as shown in the Fig. 1 about prior art) can be permanently fixed to syringe, with after do not need to carry out connecting and dismantling.It reduce the danger of contaminated blood from overflowing.

In order to improve the efficiency of system further, syringe stopper ring 210 can be formed by the part that the spring element 220 such as shown in Figure 22 6 separates by two.Part I be a standing part 210a it be substantially a part for stopper ring 210 in Figure 19 and be fixed on syringe sleeve pipe 200.Part II is a sliding ring 210b, and it can slide on the inner surface of sleeve pipe 200.Helical spring element 220 makes sliding ring 210b towards leaving ring for fixing 210a and being biased towards the direction of sleeve pipe 200 front end.When syringe 300 loads in sleeve pipe 200, its rear rim engages with sliding ring 210b, and forces it to push ring for fixing 210a to, to compress spring element 220 between which, until spring catcher 520 reverse fastener maintenance syringe 300 as mentioned above.In this state, the power that syringe 300 is applied the spring element 220 on sliding ring 210b is biased towards pallet 520.Therefore, when syringe catch 520 departs from syringe 300 (by promoting syringe catch release-push 550), syringe 300 partly exits sleeve pipe 200 automatically, contributes to like this taking off syringe from injection device.

The user of some injection devices would rather manually fill syringe and without injection device.When user wishes pre-filled syringe, especially when injection device is in the state used always, this ability is also very favourable.

Sometimes, need with when manually filling syringe, the present invention also easily can fill syringe.This fills device 700 by manual type as shown in fig. 23 a to complete.This device is that a kind of hand-held plunger 130 effectively described in detail above also works in a similar fashion.In use, lining 310 and sealing member 320 can be positioned at any position of syringe.In order to filled syringe, lining/sealing member must retracting towards syringe below.For this reason, manual type plunger 700 is introduced into syringe barrel 300, and is pushed into the hollow parts of lining 310.In this position, the manual type all pins 750 filled in device head do not reach the surface of dynamic formula plunger 700, this is because the conical section 730 filled in device at manual type is biased under the effect of spring element 740, each pin 750 is made to be resisted against the narrowest part of conical section 730 forward.When retracting with hands (finger 610 engaged with the handle 710 of plunger with operator), conical section 730 is retracted together with the head of manual type plunger 700, force pin 750 to be contained in groove or groove 311 outwardly, engage lining 310 and sealing member 320 thus.Thus retracted lining and the sealing member of joint by syringe 300 with manual type plunger 700, meanwhile, passing hole 340 extracting liquid, and fill syringe.When lining 310 and sealing member 320 arrive syringe below time, manual type plunger 700 departs from lining 310 because the power backwards on plunger declines, conical section 730 is moved forward under the effect of spring element 740, and each pin 750 is retracted as previously mentioned from groove or groove 311.Then the syringe after filling is prepared as mentioned above to install to injection device 100.It should be noted that, any part of this device all can not encounter the endoporus of syringe in any stage, if encounter the aseptic condition that can pollute syringe.It should be appreciated that, the mechanism making lining be held in plunger can adopt any form, comprises those as shown in Fig. 7 to 17.

In another embodiment, the syringe left side filled fills device with manual type and is connected, and the cervical region 735 of molectron is connected to a suitable injection device through changing.In this application, manual type fills keeper and the pressure sleeve that device becomes syringe.Whole manual type fills apparatus first for filled syringe, then fills apparatus (with syringe) and is put in injection device.Injection device promotes the fluid in the exhaustjet pipe of rear end 710.

Shown manual type fills apparatus only for filling the occasion of (engaging with the injection device manufacturing injection injection pipe), as long as so all syringes are emptied completely (as traditional), if the several millimeter of the contraction in length of plunger 700, it just can not fill (being emptied completely) syringe with crossing, this is because can not arrive lining.

In another embodiment, can with plunger knob 710 (namely such as 300 injection device in syringe be used as more traditional handheld injection pipe) on the strength of hands carry out the inclusions of exhaustjet pipe 300.

Syringe in most of injection device, syringe used in this invention is preferably provided with the lining/sealing member at complete retracted position.

Various mechanisms lining being held in plunger of the present invention are preferably arranged to when plunger is in complete retracted position that they can be driven, and preferably engage, keep and fill a new syringe thus.But the present invention intends, and any suitable position that plunger can be arranged in syringe engages with lining.

After use, usually somewhere before complete retracted position is stayed with the lining of (or part the used) syringe crossed and sealing member, thus device of the present invention does not usually engage, keeps, fills or operation one used syringe, omits or thoroughly decrease the situation of patient's cross-contamination thus.But the present invention broadly expects that lining can stay any position in syringe.

It is to be understood that, for by syringe, the pallet remained in frame member/sleeve pipe has the design that many kinds are suitable.Figure 23 b to 2e shows a syringe 300 and syringe keeper 200, pallet 500 and latch portion 520.Depression leading edge on the shape of the inward flange 526 of pallet 520 and syringe 300 is complementary.Three embodiments at the interface between Figure 23 5 shows before the inward flange and syringe 300 of pallet 520.

Another preferred embodiment of the present invention comprise as of fig. 24 with some primary elements of orientation.First an extension 1010 is assembled to the top 1012 of the syringe 1014 of infusion appliance.Then syringe 1014 is assembled to infusion appliance (or injection tube pump) 1016.The injection volume of system operator (not shown) patient needed for layout on infusion appliance control panel (not shown), then operator is as shown in figure 24 towards infusion appliance 1016 and the syringe 1014 of surface thereof combination, in this position, the position in infusion appliance or angle detect tilt switch preferably makes the piston 1032 of syringe 1014 automatically proceed to volume required by infusion appliance.It is to be understood that those of ordinary skill in the art understand this programming of infusion appliance and automatically control, although they do not respond tilt operation or excitation apparatus very much.Certainly, operator also can drive some or all of these actions.When the infusion appliance 1016 combined and syringe 1014 are towards surface thereof, any fluid afterwards from bottle 1026 all will drop on the bottom of syringe 1014, air 1030 in syringe 1014 rises to syringe top 1012, and air is discharged through pipe 1010 when piston-advance.So the free end of pipe 1010 is connected to the socket end 1018 of the special non-ventilating pin post 1020 shown in Figure 24, sees Figure 25 in more detail.Subsequently the tip 1022 of pin post 1020 is pushed the soft rubber plug 1024 of fluid bottle 1026.The perverse stopper 1024 wearing bottle 1026 in the tip 1022 of pin post 1020, forms one from the inclusions of bottle through pin post 1020 and pipe 1010 path to syringe.It is to be noted, at this place, system and isolate from outer air, the pressure in system will be neutral.It should be appreciated that, pin post 1020 has barb-shaped cervical region 1021 as shown in figure 25, to guarantee that it can not be extruded stopper 1024 when system is pressurized after a while.Then install or be inverted (as shown in figure 24) bottle 1026, fluid 1028 is drawn out of through pin post 1020 and pipe 1010 etc.

Present operator can select " filling " button (not shown) in infusion appliance 1016, and this button preferably automatically can complete order below:

Syringe piston 1032 is made to be driven into the top 1012 of syringe 1014 completely forward, the air 1030 in compression syringe, pipe and bottle.Most of filtrated air 1030 in syringe and pipe 1010 to be discharged in bottle 1026 and the air space 1034 risen in bottle 1026.Those skilled in the art know, because syringe 1012 is sterilized during fabrication together with the lining 1032 of retraction completely (being namely marked with air) as shown in figure 26, so such air 1030 is aseptic.Then piston 1032 is just by the volume (such as 130%) automatically retracted to only slight beyond programming, and fluid 1028 enters syringe 1014 from bottle 1026 by pin post 1020 and pipe 1010 rapidly by the partial vacuum caused of retracting of piston 1032 in pressure in bottle 1026 and syringe.After spending a bit of time, pressure is equal, and fluid all shifts, and the amount that syringe 1014 fills is greater than the fluid volume of programming, adds residual air.At once automatically to advance again the volume got back to needed for programming with back piston 1014, so that any residual air and excess fluid are expelled back into bottle 1026, what stay in syringe 1014 is the liquid of programming volume, does not all have air in syringe 1014 or pipe 1010.

In this stage, complete " filling " operation, importantly will note, system has neutral pressure (because piston turns back to system by the position sealed), make when pipe departs from bottle (or removing pin post), system namely can not air-breathing, also can not dropping liquid.

Bottle 1026 is now upright, and pipe 1010 departs from pin column joint 1018, and can be connected to patient, ready for injecting.

Those skilled in the art it being understood that the fact below and structure are common way in this field, may not be well illustrate and describe, but be very important for enforcement of the present invention and operation in the text:

● with all components and interior air with which are all sterilized in the fabrication process in the fluid passage.

● in the bottle of medical fluid, usually there is the space of sub-fraction air or gas.

● before fluid flows out; take off the over cap (entering to allow pin post) covering central plug; but stopper keeper 1025 (as shown in figure 24) stays (otherwise stopper may move due to air pressure in filled process) on bottle.

● infusion appliance syringe assembles the plunger (being namely filled with filtrated air) of retraction usually.

● syringe, pipe and pin post have the road strategic point locking connector of standard, to guarantee that they seal reliably and under elevated pressure.

The change to system below can improve the present invention in some cases:

● filled sequential programme can extend, especially for close towards last retraction circulation with additional

The volume of the heap(ed) capacity of syringe.This is all discharged in order to ensure all air.When syringe will be filled to close to capacity (> 75%), retract in 130% at piston and there is no sufficient displacement.Thus, need additional travel with air-out.Should " 130% " numeral be the function of pipe (air) volume, and the air space in bottle---larger pipe volume (or air space minimum) in bottle needs more displacement.

● in filled sequential process, the air one that the first compression travel of piston preferably can be all in exhaustjet pipe is especially for X-ray comparison, and wherein bottle has significant air space usually.

● or, in order to make Performance optimization, even if bottle has quite little air space, in compression process, infusion appliance can pressure (such as by detecting the load of driving device) in detection system, and if pressure can premature withdrawal close to unsafe degree.

● step operator can being pointed out to carry out for the electronic equipment that controls and relevant display and tone generator or carry out next step in filled routine work.

● available infusion appliance tilt switch (or sensor) is caused or is stoped other function of infusion appliance, such as stop injection in infusion appliance and syringe down, or in filled process, accelerate flow velocity (this speed is unsafe for being expelled in patient).

● in the fabrication process, syringe 1014 is equipped with extension 1010 and the pin post 1014 (as shown in figure 24) of combination, to reduce the time of operator further.

● the pipe 1010 having permanent direct connection and be attached to syringe end 1012 made by syringe 1014 and pipe 1010; to protect the aseptic of syringe end 1012; reduce the expense of manufacture and material by arranging connector 1013, this is generally suitable for tubulature 1010 to syringe end 1012 (shown in Figure 31 to 33 as will be described below).Further, owing to ensure that pipe can not depart from, can not discharge contaminanted fluid, safety is improved.

● can be pipe and install an air detectors (optics, hyperacoustic etc.) do not have air after guaranteeing to fill, before air is got rid of, infusion appliance cannot operate.

● syringe 1014 and corresponding extension 1010 can permanently in conjunction with the molectrons (as shown in fig. 27 c) of 1039 to one special patient's connectors and fragility pin post, and it all provides as an assembly 1060.The expense of this assembly is low, makes the not reproducible use of system, this avoid the cross infection between patient and patient.This concept describes in detail as follows:

Complete assembly 1060 (as shown in figure 28) for filled syringe, as aforesaid, but, after having filled, do not make pin post depart from pipe, then fractureed pin post 60, and as previously mentioned, remaining one at the male Luer connector of tube end, to be connected to patient.But importantly, along with removing of pin post, syringe is unlikely to be filled because of carelessness again, thus can not be used for more than one patient, thus avoid the cross infection from a patient to another patient.

It is to be understood that traditional pin post still can connect after frangible pin post removes, therefore can be used for filling again, may pollution be caused.This overcomes by adopting a non-standard connector (such as larger-diameter road strategic point).This needs an off-gauge fit connection on pin.Further, if the inclusions in bottle is used to more than one syringe (this is frequent situation), bottle can not by filling a used syringe and contaminated absent-mindedly again.

Figure 26 and 27 shows the various examples 1040 and 1050 combined with the male Luer connector of frangible spike and pipe 1010.Figure 28 shows has one to be attached to the extension 1010 of syringe 1014 and frangible connector 7 pin post 1050 complete assemblies 1060 in every one end.To the diagram of the connector 7 pin post of interchangeable combination be described below:

Figure 26 a to 26d shows each view of an example of the molectron 1040 of male Luer connector 1046 and frangible pin post 1042 and locking ring 1047.Figure 26 a be combination before road strategic point connector 1046 and the axonometric chart of frangible pin post 1042 and locking ring 1047.Dish 1043 provides a clamping simply for gripping pin post.Frangible cervical region 1044 can be clear that, the road strategic point connector 1046 after the figure shows combination and the combination of frangible pin post 1042 and locking ring 1047 from Figure 26 6 of a Y-direction sectional view.Locking ring has traditional female luer lock and determines screw thread, for remaining on the separated pin connecting patient afterwards of pin post.The tuberosity of little projection or barb 1048 are used as brake component, with once assemble prevention ring and to slip away connector.Locking ring 1047 is dispensable for the present invention, but, had better use when using together with pressure injector.

Figure 26 c shows the side view of the connector/pin post/ring molectron 1040 assembling and be attached to pipe 1010.

Figure 26 d shows the connector/pin post/ring molectron 1040 of pin post after frangible cervical region 104 is separated, and leaves the male luer lock connector 1046 of a standard in the end of pipe 1010.

Figure 27 a to 27c shows male Luer connector 1046 and each view of another example having the frangible pin post 1051 of barb and the molectron 1050 of locking ring 1047.The stopper 1025 of all barbs 1053 for avoiding pin post to leave bottle 1026 in the pressure period filled.

Figure 27 a shows the Y-direction sectional view of connector/the have molectron 1050 of the frangible spike ring of barb.

Figure 27 b shows assembling and is attached to the molectron 1050 of connector after pipe 1010/the have frangible spike/collar of barb.

Figure 27 c shows the shorter example of connector/have of the molectron 1050 of the frangible spike/collar of barb.Those skilled in the art will be understood, and according to the size of bottle and stopper, pin post can do shorter (referring to ratio).

Figure 28 illustrates an example of connector/the have molectron 1060 of the frangible spike/collar of barb, and it is permanently attached to corresponding extension 1010 and syringe 1014, with formed an injection patient's but can not reusable assembly 1060.

The use of complete assembly 1060 is as follows: first pin post 1051 is inserted stopper (not shown in Figure 28), and fill syringe 1014 as previously mentioned.Extract pin post 1051 out from stopper after, fractureing pin styletable 1051 abandoning at frangible cervical region 1044, leaving traditional male luer lock end 1046 for being connected to patient's (not shown).It should be noted that, only separated at pin post 1051, patient's (not shown) just may be connected to assembly 1041.But, once separately, connect again pin post 1051 just can not resemble usually, thus corresponding pipe 1010 and syringe 1014 can not fill again, therefore, ensure that each assembly can only inject a patient, namely which prevent any careless cross infection between patient and patient.

Those skilled in the art should give understanding, and the pin post (vented spike) of a perforate also can crisply combine with a male Luer connector, but syringe fills in a more traditional mode.

It should be noted that, all sectional views of Figure 29 to 33 are along being intercepted by the longitudinal direction of axis of workpiece.As above, needed for other place required by and medically, often require directly to connect the plastic tube of a flexibility or be attached to a rigid plastics mouth of pipe or road outlet in distress.Figure 29 shows a typical male luer lock connector before proceeding.Figure 29 a one always schemes, and Figure 29 b is a longitudinal axis sectional view.Syringe body 2010 has an outlet connector end 2011, and it has the male luer outer surface 2014 of a taper, surround by the cloudy locking screw thread portion 2012 that a diameter is larger, they on the same axis, but the former is slightly before threaded portion.It is to be noted, nearly all road strategic point conical surface 2014 is manufactured into the diameter of a standard, has the tapering of international standard ISO594 formulates about 6%.Figure 29 b clearly show from outside conical surface in distress 2014.Syringe 2010 (comprising end 2011 and threaded portion 2012) is normally made through injection-molded with tough and tensile semihard transparent polypropylene.

Figure 30 illustrates that one is pushed fully flexible plastic pipe 2016 on syringe end 2011.This end 2011 has the outside 2014 of a taper, and pipe 2016 extends and consistent with taper outer 2014, and the final outer surface 2018 of pipe forms the taper of an expansion.

In Figure 31, show the primitive form of the fixture invention before and after assembling.

Fixture 2020 is formed by semi-hard plastic, and for having the cylindrical shape of hollow inner conical face diameter 2021, on guide edge one little chamfering 2022 contributes to assembling.The installation of fixture 2020 is by completing on the conical outer surface 2018 of pipe and in the simple push of female threaded portion 2012 inside of syringe junction.Those skilled in the art it is to be understood that fixture 2020 has suitable accurate dimension, footpath and external diameter to have firmly interference fit within it as shown in the figure, with the thickness of the wall of applicable pipe and syringe and compliance.

When being pressed into cooperation, the inner conical face 2021 of fixture 2020 makes pipe 2016 be squeezed on the end 2011 of syringe 2010 securely, as shown in figure 31.Syringe end 2011 is also made up of semi-hard plastic, and all parts are out of shape slightly, to apply uniform pressure in the connection of strategic point end 7, road pipe, guarantees that it is sealed very effectively.

Figure 32 to 35 shows other change of basic jig Design.

In Figure 32, the annular ring 2032 with little barb has been added on the outer surface of barb fixture 2030, to improve the retentivity of inside, connector cloudy locking screw thread portion.Fixture 2030 is pressed on pipe 2016, and enters syringe 2010 as mentioned above.All barbs 2032 are with female thread 2012 interference and clamp this female thread, to guarantee that it can not be moved.The same, the inner conical face of fixture 2030 makes pipe 2016 be squeezed in securely on the end 2011 of syringe 2010.This kind of fixture is applicable to permanent and tamper occasion, if this is because do not have instrument almost can not take off fixture.

In fig. 33, pin thread 2042 has been added on the outer surface of fixture 2040 and 2050 of two similar type, and they coordinate with the female thread 2012 of syringe 2010, and has the inner surface 2021 of a taper.The purposes of screw thread 2042 contributes to assembling, and can be clamped in by pipe 2016 securely on the strategic point taper surface 2014 of road.In an assembling process, can promote simultaneously and twist to revolve fixture 2040 or 2050 in syringe screw thread 2012 He on pipe 2016, to be squeezed in by pipe 2016 on the strategic point taper surface 2014 of road, form be connected more reliable and more fastening than said structure.The same, the inner conical face 2021 of fixture 2040 and 2050 makes pipe 2016 be squeezed in the end 2011 of syringe 2010 securely.

Figure 33 b shows the barb zigzag projection 2054 additional in fixture rear end, and these zigzag projections contribute to catching and rotary clamp in an assembling process.

Those skilled in the art is it is to be understood that rear end or flange can adopt many applicable manual, machines or tool assemble and/or prevent the form of taking apart.

Figure 33 c is the longitudinal sectional view of fixture 2040 or 2050, the inner conical face 2021 that it illustrates pin thread 2042 and coordinate with the male-tapered face 2018 of pipe 2016.

Figure 33 d is the longitudinal sectional view of fixture 2040 or 2050.

Figure 33 e is the longitudinal sectional view of fixture 2060, it illustrates pin thread 2042, and is added to the interior circular ridge 2062 of inner surface of fixture 2060 of convex ridge.

Figure 33 f shows and promote simultaneously and twist the fixture 2060 after revolving in syringe screw thread 2012 and on pipe 2016, and pipe 2016 is squeezed on the strategic point taper surface 2014 of road.Squeezing action is focused on the short region 2064 (can't see from Figure 33 f) be combined with pipe 2016 by the interior convex ridge 2062 of fixture 2060, provides a more concentrated pressure, and improve sealing compared with said structure.Or those skilled in the art may think and provides the sealing with said structure equivalence at the minimum situation lower clamp 2060 of assembling (and taking apart) power.

Those skilled in the art is it is to be understood that can comprise one or more circular ridge at the inner surface of any fixture of the above-mentioned type, and the shape of convex ridge can change over the hardness of applicable adopted specific pipe (not shown).

Figure 34 and 35 shows the various flanges 2072 and 2082 that (difference) is added to screw-type fixture 2040 rear end shown in prior figures 333.The outer surface of two fixtures 2070 and 2080 has the pin thread 2042 coordinated with syringe female thread 2012, its objective is and contribute to assembling and clamp pipe 2016 securely.The neighboring of the flange 2083 of Figure 35 has all additional reverse hook teeth 2082, and it is clockwise 2084 fastening that these teeth contribute to fixture 2080, but can stop counterclockwise outwarding winding, and can prevent the change to connecting thus.Fixture 2070 to insert syringe (with clamping pipe) with above-mentioned identical method, can be with or without annular ring with 2080 within it on the surface.

If require that fixture can take off, the fixture 2070 so in Figure 34 is preferably.Or the flange of fixture 2070 can add the directionless sawtooth contributing to catching at either direction (not shown).

Or the fixture 2080 of Figure 35 6 type has the direction barb contrary with the barb on fixture 2080 and can guarantee that this fixture can not be excessively fastening, and improves the probability that fixture always can be removed (not shown).

Figure 36 shows the side axonometric chart of a syringe keeper, wherein has and can discharge with the bonding part of the joint of medical infusion appliance and detect the detection system that syringe exists.Syringe keeper 200 is bonded in the infusion appliance nose 10 of medical infusion appliance (not shown).Some bayonet pins 3010 on infusion appliance nose 10 and a block piece (keeper lock 3015) form a part for the engaging mechanism watched of syringe keeper 200 and infusion appliance.Syringe 300 is installed in keeper 200, and keep by pallet 500.Infusion appliance nose 10 has the sensor or the switch 3110 whether syringe in a detection keeper 200 exist.According to shown embodiment, it is an optical pickocff.

Keeper lock 3015 is adjacent with syringe sensor 3110, and therefore, when installing syringe, syringe keeper 200 can not be removed, and also can not take off in injection process.In addition, if keeper 200 does not lock (be clockwise at this example) completely, syringe can not be installed.This embodiment especially can be used for the situation of the sensor not checking syringe.Understood, if a syringe is mounted, then can not be loaded onto keeper 200.

In order to make syringe keeper 200 engage with infusion appliance nose 10, first keeper to be inserted nose, and rotate when there being slight pressure inwardly, until groove 3020 (as shown in Figure 37 3) engages bayonet pin 3010.At this place, keeper 200 enters nose 10 completely, and rotating returning member is by place for its locking.Although illustrate three bayonet slot pin groups are circumferentially evenly separating, they are also being oriented in the special angle place of cooperation, and keeper can only be engaged at a specific direction.Sealing member 3145 can be simple O shape circle or a guard ring, and has two vital tasks:

A () anti-fluid enters infusion appliance

B () provides rubbing device, to reduce keeper by the probability of surprisingly taking off.

Figure 37 a-d and 38a-e shows several views of a syringe keeper, wherein has the detection system whether bayonet socket adnexa 3010, block piece (keeper lock 3015), the syringe installed and detection syringe exist.Infusion appliance nose 10 is equipped with fluid sealing member 3145 and a spring stopper ring 3140, and syringe identification piece spring 3130 is resisted against on this spring stopper ring 3140.Syringe stop and plunger guide bush 3135 are positioned at infusion appliance nose 10 and syringe 300 coupling spool 3135 simply, to limit the motion of syringe 300 towards medical infusion appliance.Sleeve 3135 has at least one groove 3150, and all tabs 3122 (as shown in Figure 37 c) are slidably engaged in the cell.In the process of assembling, spring 3130 is compressed between the lug 3122 on stopper ring 3140 and identification piece 3120, thus forward (to right) biased identification piece 3120.When not installing syringe, all lugs 3122 are resisted against sleeve 3135, and the tip of identification piece 3120 reaches the right side of sleeve 3135.

The syringe keeper 200 with some grooves 3020 is directed into infusion appliance nose 10, and groove engages with all pins 3010, and turns to thus by place for its locking.When syringe barrel 300 inserts keeper 200, therefore its pressure syringe identification piece 3120 also resists the lug 3122 that spring 3130 promotes identification piece.Pallet 500 snaps shut be biased and correct position syringe 300 is locked in keeper.

Keeper lock 3015 has the width similar to identification piece 3120, and is arranged on the axis identical with identification piece 3120.Owing to installing keeper 200, when all bayonet slot 3020 engage (not rotating) completely with pin post 3010, identification piece 200 almost can meet it.In installation site, be provided with a syringe, identification piece 3020 is pushed back by past, and keeper 200 can not rotate in the approach of mistake (in this case counterclockwise), this is because identification piece 200 will engage with lock 3015, keeper 200 will be avoided to rotate in infusion appliance nose 10 thus.

Identification piece 3120 has an oblique end 3124 engaged with syringe 300, clamps it thus and makes rotary motion minimum.The motion of identification piece 3120, towards the motion activated sensor 3110 of infusion appliance, produces a signal to such result of syringe in keeper thus.In present case, sensor 3110 is molectrons of an optical transmitting set and detector, for detecting the light reflected from the metal surface of identification piece 3120.The signal produced delivers to a controller, thus this controller synthesis information control the motion of syringe plunger 130.Such as, controller restricted the motion of plunger before sensor generation one has the signal of syringe always.When taking out syringe 300 from keeper 200, identification piece 3120 is pushed away sensor 3110 by spring 3130, removes reflection thus.

Be assembled into by keeper 200 in the process of infusion appliance nose 10, sleeve 3135 and spring stop 3140 are fixed on position suitable in keeper by binding agent, screw or pin usually.The outer surface of two retainers has a little cannelure 3150, to support the slidably syringe identification piece 3120 being remained on correct position together with identification piece spring 3130 by sleeve 3135 and retainer 3140.Spring 3130 is contained between spring stop 3140 and all lugs 3122, makes identification piece be biased thus forward.When not installing syringe, identification piece 3120 reaches before syringe retainer 3135, and its lug is resisted against after syringe retainer.Second function of syringe retainer supports plunger also for plunger centers, and avoid the fluid be dispersed in around syringe to enter infusion appliance.

In brief, syringe identification piece device has three major functions:

1. syringe pusher: identification piece 3120 is slidably mounted in groove 3150, and is biased forward by identification piece spring 3130.When syringe 300 is arranged in keeper 200, back edge clashes into identification piece, towards pusher it, and Compress Spring, until the end of identification piece flushes with sleeve 3135.When pallet 500 is opened, identified of syringe 300 releases a part forward, enables syringe catch relatively easily and take off.

2., when a pipe is connected to syringe (after syringe installation), operator needs to reverse junction, engages to make junction and locks onto syringe screw thread.In order to stop syringe to rotate, usually need to fix with another hands.But identification piece 3120 can complete this task.The leading section 3124 of identification piece 3120 to tilt and sharp-pointed, resembles a chisel, enter syringe a bit, stop the rotation of syringe thus.

3. identification piece contributes to detection syringe whether in keeper 200.The infrared reflection sensor of such as Sharp GP2L24 is that class sensor 3110 being easy to obtain.When identification piece be injected pipe push back time, the reflective rear end of identification piece detect by sensor, sensor signals again to controller.Those of skill in the art recognize that other various forms of detection or mechanical switch also can be used for detecting the motion of identification piece 3120.

Figure 39 a and b is the sectional view of the syringe in syringe keeper, there is illustrated a particularly preferred embodiment of the engaging mechanism between lining and plunger.

Plunger 3600 engages with action piece 3610 slidably, but has a limited play due to space 3625 between which.Also will point out, being free to slide of plunger 3600 is slowed down slightly by sealing member 3146.Whenever the motion in the other direction of actuator 3500 and action piece 3610, before space 3625, plunger 3600 can not move.Action piece 3610 and its corresponding cone 3650 drive all pins 3640, automatically to engage at reasonable time or to depart from lining 310.

Keeper 200 is gnawed is combined in infusion appliance nose 10.Syringe 300 has been installed in keeper 200.Figure 39 3 shows the plunger just embodiment of displacement fluids from syringe.The shoulder 3520 of plunger actuation part 3500 engages and promotes plunger 3600 and is arranged on the action piece 3610 in the hole in plunger 3600.Action piece 3610 has a bar portion 3165 (cannot see in Figure 39) and to make the nose 3650 of cone.The advance the puck of nose 3650 makes the locking piece in all pin 3640 forms by spring 3660 is biased retract from the engagement state at the junction surface with lining 310.Thus in the advance the puck process of plunger 130 and afterwards, lining 310 automatic unlocking.The object untiing lining can take off the syringe used after injection.

When plunger actuation part 3500 is retracted, the shoulder 3520 of plunger actuation part 3500 is drawn back from the back edge of plunger 3600, and pulling action part 3610 leaves lining 310 thus.Plunger 3600 moment is motionless, nose 3650 is slided along all pins 3640, forces them stretch out from plunger 360 and engage the junction surface of lining 310 thus.The shoulder 3620 of shoulder 3630 on action piece 3610 in space 3625 conjugate foramen, make nose 3650 by stop action piece 3610 relative they be positioned at further away from each other by these pins 3640.Thus, lining 310 is in the retraction movement process of plunger actuation part 3500 and be automatically kept afterwards, and lining is retracted, and filled syringe.

Thus, this system can automatically be guaranteed to lock or unlock between lining in due course, for operator and patient, avoids the inconvenient safety with improve infusion appliance.Certainly, controller must be programmed, and when plunger oppositely moves, considers intrinsic play.

Figure 40 is the longitudinal sectional view of a plunger and lining, it illustrates the preferred embodiment of the sensor of the joint between detection lining and plunger.Syringe 300 has one to be slidably disposed on lining 310 in it.Sensor 3300 is optical sensors with optical cable 3350, and this optical cable 3350 part is embedded in plunger 130.Optical cable 3350 has an exposed ends 3355, and this exposed ends 3355 flushes with the surface of plunger 130 and detects the incident illumination 3360 by transparent shot pipe 300.Then incident illumination is propagated along optical cable 3350.When plunger 130 engages completely with opaque lining 310, incident illumination can not hit the end of optical cable 3350.Therefore, optical sensor 3360 may detect unglazed, and produces a suitable signal.Certainly, if room light is not enough to make sensor operations, plunger can be thrown light on by the visible or infrared light of infusion appliance.

This signal is sent to a controller by conveyer line 3370, to control the motion of plunger 130 further.Such as, when plunger 130 engages completely with lining 310, it can make plunger 130 automatically stop, and lining 310 can not be caused thus forward to move.According to this embodiment, owing to being little in the hole of end of cable, so when plunger enters lining, surround lighting can be cut off suddenly, so the precision of system and to be predictively improved.Similarly, owing to engaging and distincter the contrasting between disengaged condition, the intensity of environment or illumination light is not crucial.

Figure 41 and 42 shows an embodiment of medical infusion appliance, and its tilt switch is in injection and charge position.Injector head 4000 has control and the driving element of infusion appliance, and its head pivot 4050 is installed on infusion appliance base 4100, and this base 4100 is preferably seated in one to be had on the basic (not shown) of wheel.Head 4000 can pivotally tilt at least 90 degree.

One P cock lug 4030 stretches out in infusion appliance base 4100.Switch 4010 and 4020 is fixed on such position of head, namely under the relative position of (4020) and upper (4010) can contact switch lug, local at those, respective switch changes state, and is connected with the control circuit (not shown) controlling head 4000 direction.These are communicated with for starting or suppressing multiple functions in infusion appliance, operation, display, response and/or protection.

Those skilled in the art should give understanding, can use other sensor various in the appropriate location of switch 4010 and 4020, such as magnetic, light or machinery.It should be appreciated that, multiple orientation of head can be come with multiple lug and switch.

It should be appreciated that, above-mentioned concept is implemented not consider terrestrial gravitation.

Those skilled in the art is it is to be understood that above-mentioned the present invention can be applicable to the road strategic point locking connector of any standard, as can be applicable in many medical treatment and other device.It is to be understood that according to application, the combination of various outer surface and inner surface, combines with any one of above-mentioned rear end or flange and is all fine.

The form that word " comprises " and this word " comprises " be used in this explanation is not used to restriction the present invention to refuse any change or interpolation.

Obviously, those skilled in the art can change the present invention and change.These variations and change are all within the scope of the present invention.

Claims

1. the plunger of syringe for using together with medical science injector system, described syringe has body and is arranged in described body and along described body slidably lining, described plunger comprises:

I () holding member, can engage the junction surface of described lining releasedly, return selectively by described plunger to make described lining along described body; And

(ii) sensor of the degree of engagement between described plunger and described lining is detected.

2. plunger as claimed in claim 1, wherein, described sensor detects the joint completely between described plunger and lining.

3. plunger as claimed in claim 1, comprises optical sensor.

4. plunger as claimed in claim 3, wherein said optical sensor comprises optical cable.

5. plunger as claimed in claim 1, comprises mechanical pick-up device.

6. plunger as claimed in claim 1, comprises electromagnetic transducer.

7. plunger as claimed in claim 1, use together with the syringe with lining, described lining comprises the outer surface engaged with the body of described syringe slidably and the inner surface with annular join, described annular join comprises can releasedly by groove that plunger engages, to make described lining be return along described body selectively by described plunger, the shape of the inner surface of wherein said lining and the outer surface complementation of described plunger.

8. plunger as claimed in claim 1, with there is lining use together with the syringe of the molectron of sealing member, described sealing member comprises the outer surface engaged with the body of described syringe slidably and the inner surface that can engage described lining, described lining comprises the outer surface that can engage described sealing member and the inner surface with basic annular join, described annular join comprises can releasedly by groove that plunger engages, return along described body selectively by described plunger to make the molectron of described lining and sealing member, the shape of the inner surface of wherein said lining and the outer surface complementation of described plunger.

9. with medical science injector system, medical fluid is filled to the method for syringe from sealed container, described system comprises plunger as claimed in claim 1, and described method comprises following step:

I () makes the anterior opposite rear of described syringe rise;

(ii) make described plunger advancement to the position corresponding to predetermined patient metering in described syringe;

(iii) with the movement of plunger described in the sequential control of movement forward and backward, so that the pipe of air from described syringe and any connection is discharged to container bottle, and the fluid of required metering is extracted in described syringe.

10. the method filling syringe as claimed in claim 9, also comprises the step of the moving direction towards the described plunger of automatic restriction according to described syringe.

11. methods filling as claimed in claim 10 syringes, wherein when described plunger by towards one-tenth its anterior promoted relative to its rear portion time can move forward or backwards, when by towards can only forward to moving when becoming rear portion relative to its forward lift.

12. is the method for patient injection with the medical science injector system comprising plunger as claimed in claim 1, and it comprises step:

I () makes plunger and is arranged in syringe barrel and the lining that can slide along syringe barrel engages;

(ii) lining is driven along described syringe barrel; And

(iii) fluid is discharged to patient from syringe.

Syringe loading is comprised the method for the syringe keeper in the medical science injector system of plunger as claimed in claim 1 by 13., comprises the steps:

I described syringe barrel is inserted in frame member by (), make pallet displacement; And

(ii) make described pallet get back to its offset position, to engage described syringe, thus described syringe is remained in described frame member.

Take off the method for syringe in 14. syringe keepers from the medical science injector system comprising plunger as claimed in claim 1, comprise the steps:

I () release latch is to untie described syringe; And

(ii) from described frame member, described syringe is exited.

The syringe of the molectron comprising lining or lining and sealing member is connected to the method for plunger by 15., described lining comprises the outer surface that can engage with the body of syringe slidably and the inner surface with annular join, described annular join comprises can releasedly by groove that plunger engages, return along body selectively by described plunger to make described lining, the shape of the inner surface of wherein said lining and the outer surface complementation of plunger, sealing member in the molectron of described lining and sealing member comprises the outer surface engaged with the body of syringe slidably and the inner surface that can engage lining, lining in the molectron of described lining and sealing member comprise can engaging seals outer surface and there is the inner surface of basic annular join, described annular join comprises can releasedly by groove that plunger engages, return along body selectively by described plunger to make the molectron of described lining and sealing member, the shape of the inner surface of wherein said lining and the outer surface complementation of plunger, described plunger comprises: (A) holding member, described holding member engages the junction surface of lining releasedly, return along body selectively by plunger to make lining: and (B) sensor, to detect the degree of engagement between described plunger and described lining, described method comprises the steps:

I plunger is imported syringe barrel by (), described lining is positioned at described body and along described body slidably, and plunger is engaged with the inner surface of lining; And

(ii) excite described plunger, make described holding member engage the junction surface of described lining.

16. methods connecting syringe hub as claimed in claim 15, also comprise the step of the degree of engagement between the described plunger of detection and described lining.

17. plungers as claimed in claim 1, use together with the syringe keeper for medical injection system, described medical science injector system comprises the frame member of the body that can hold described syringe, and can pivoting catch releasedly described syringe is locked in described frame member, wherein said pallet is biased and to engage with described syringe in described primary importance and depart from described syringe in the second position towards primary importance.

18. plungers as claimed in claim 1, use together with the manual device filling the syringe used together with medical science injector system, described syringe have body and in described body along described body slidably lining, described device comprises plunger and holding member, described holding member can engage the junction surface of described lining releasedly, is return selectively by described plunger to make described lining along described body.