CN106132461B - Syringe - Google Patents
Syringe Download PDFInfo
- Publication number
- CN106132461B CN106132461B CN201580014528.7A CN201580014528A CN106132461B CN 106132461 B CN106132461 B CN 106132461B CN 201580014528 A CN201580014528 A CN 201580014528A CN 106132461 B CN106132461 B CN 106132461B
- Authority
- CN
- China
- Prior art keywords
- gasket
- outer cylindrical
- diameter portion
- cylindrical portion
- syringe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 241000521257 Hydrops Species 0.000 claims abstract description 37
- 206010030113 Oedema Diseases 0.000 claims abstract description 37
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 239000012530 fluid Substances 0.000 claims description 35
- 230000004323 axial length Effects 0.000 claims description 14
- 229920001971 elastomer Polymers 0.000 claims description 3
- 239000000806 elastomer Substances 0.000 claims description 3
- 238000009751 slip forming Methods 0.000 claims description 3
- 230000008602 contraction Effects 0.000 claims description 2
- 230000000881 depressing effect Effects 0.000 abstract description 6
- 230000000994 depressogenic effect Effects 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000314 lubricant Substances 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001839 endoscopy Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000144985 peep Species 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
- A61M5/31511—Piston or piston-rod constructions, e.g. connection of piston with piston-rod
- A61M5/31513—Piston constructions to improve sealing or sliding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3129—Syringe barrels
- A61M2005/3131—Syringe barrels specially adapted for improving sealing or sliding
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/3129—Syringe barrels
- A61M5/3134—Syringe barrels characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The present invention relates to syringes.In syringe, with the depressing plunger the case where compared with, be easy for plunger to be pulled to nearby.Syringe (10) has: the end wall (24) that nozzle (21) is penetrated through；The outer cylindrical portion (20) being connect at one end with end wall (24)；And along the gasket (30) slid back and forth in outer cylindrical portion (20), outer cylindrical portion (20) has the hydrops room (3) adjacent with the rear side of the slipper (1) of gasket (30), with the sliding rearward of gasket (30), the liquid (5) of hydrops room (3) enters the slipper (1) of gasket (30) and is lubricated to slipper (1).
Description
Technical field
The present invention relates to syringes, especially with regard to pair of the resistance to sliding of the gasket for the outer cylindrical portion for reducing insertion syringe
Plan.
Background technique
Conventionally, there is known have outer cylindrical portion, gasket, plunger syringe (for example, referring to patent document 1).In the note
In emitter, there is end wall in one end of outer cylindrical portion, and be provided with nozzle in a manner of penetrating through the end wall, connect with the front end of plunger
The gasket inside that passes through the opening insertion outer cylindrical portion of the other end of outer cylindrical portion.
In the existing syringe, reception room is formed between the end wall and gasket of outer cylindrical portion.If plunger depressed makes
Gasket moves forwards, then above-mentioned reception room is shunk, so that the fluid of reception room is flowed out by nozzle to the outside of syringe.Separately
On the one hand, nearby move gasket rearward if plunger is pulled to, above-mentioned reception room expansion, so that the stream in the outside of syringe
Body is flowed by nozzle to reception room.
Patent document 1: Japanese Unexamined Patent Publication 2009-165524 bulletin
However, radial direction in the case where existing syringe, with the liquid of reception room not between outer cylindrical portion and gasket
The mode that gap leaks out makes outer cylindrical portion and gasket sliding contact, is difficult to as a result, because of the resistance to sliding between gasket and outer cylindrical portion
Mobile plunger.
In particular, pull plunger the case where from plunger depressed the case where it is different, it is necessary to strength of adjustment so that gasket not from
Outer cylindrical portion falls off.From the point of view of such case, compared with the case where pulling plunger is with the plunger depressed the case where, exists and be difficult to carry out to column
The problem of operation of plug.
Summary of the invention
The present invention is to complete in view of the above problems, the feelings its object is to make in syringe, with plunger depressed
Condition is compared, and is easy for plunger to be pulled to nearby.
The present invention is a kind of syringe, is had: the end wall that nozzle is penetrated through；It is connected with the outer cylinder of above-mentioned end wall at one end
Portion；And along the gasket that slides back and forth in above-mentioned outer cylindrical portion, above-mentioned outer cylindrical portion have with after the slipper of above-mentioned gasket
The adjacent hydrops portion in side, with the sliding rearward of above-mentioned gasket, the liquid in above-mentioned hydrops portion enters the sliding of above-mentioned gasket
Part is simultaneously lubricated above-mentioned slipper.
Alternatively, it is also possible to be formed are as follows: the outer cylindrical portion of syringe of the invention is formed with reception room and fluid path, described
Reception room is adjacent with the front side of above-mentioned gasket and is connected to said nozzle, and the side of the fluid path and above-mentioned gasket is adjacent simultaneously
Above-mentioned reception room is connected to above-mentioned hydrops portion, with the above-mentioned reception room as caused by the sliding forwards of above-mentioned gasket
Contraction, the liquid of above-mentioned reception room conveyed by aforesaid liquid access to above-mentioned hydrops portion.
Alternatively, it is also possible to be formed are as follows: the outer cylindrical portion of syringe of the invention has outstanding from internal perisporium to radially inner side
Flange, above-mentioned gasket are made of elastomer, and in sliding along the longitudinal direction, is produced from the upper part to above-mentioned flange the elastomer
The shape that changes simultaneously is formed as recessed portion, and aforesaid liquid access is formed in the recessed portion of above-mentioned gasket.
In addition, syringe of the invention also may be formed so that the plunger for having and connecting with above-mentioned gasket, above-mentioned gasket is in quilt
Above-mentioned plunger pushes and upper to closing said nozzle in the state of above-mentioned flange forwards, later, further by above-mentioned column
Plug pushes forwards and presses on above-mentioned end wall and flexible deformation, so that above-mentioned reception room be made to shrink.
In addition, the flange of the outer cylindrical portion of syringe of the invention can also be formed as sliding of the axial length than above-mentioned gasket
Partial axial length is long.
In addition, the flange of the outer cylindrical portion of syringe of the invention could be formed with one, or in the week of above-mentioned outer cylindrical portion
It is formed with upwards in mode spaced apart multiple.
Alternatively, it is also possible to be formed are as follows: the gasket of syringe of the invention has at least one small diameter portion and large-diameter portion, above-mentioned
Small diameter portion from above-mentioned outer cylinder portion from, above-mentioned large-diameter portion is successively formed in the front side of above-mentioned small diameter portion, above-mentioned outer cylindrical portion with
Above-mentioned slipper is formed between above-mentioned large-diameter portion, the radial clearance between above-mentioned outer cylindrical portion and above-mentioned small diameter portion is formed with
Above-mentioned hydrops portion.
In addition, the flange of the outer cylindrical portion of syringe of the invention can also be formed as major diameter of the axial length than above-mentioned gasket
The axial length in portion is long.
Alternatively, it is also possible to be formed are as follows: the outer cylindrical portion of syringe of the invention is formed with the slot axially extended in internal perisporium
Portion, aforesaid liquid access are formed in the inside of above-mentioned groove portion.
According to the present invention, with the sliding rearward of gasket, the liquid in the hydrops portion of syringe will be accumulated in gasket
Slipper supply, thus by the liquid in hydrops portion be used as gasket slipper lubricant, thereby, it is possible to reduce outer cylinder
Resistance to sliding between portion and gasket.It, can be easily by plunger to nearby pulling by reducing the resistance to sliding.
Detailed description of the invention
Fig. 1 is the longitudinal sectional view of syringe involved in one embodiment of the present invention.
Fig. 2 is the longitudinal sectional view near the nozzle of syringe involved in one embodiment of the present invention.
Fig. 3 be gasket it is upper to flange when syringe nozzle near longitudinal sectional view.
Fig. 4 is the A-A cross-sectional view of Fig. 3.
Fig. 5 is longitudinal section view near the nozzle of the syringe after the through hole of end wall is just closed in the front end of gasket
Figure.
Fig. 6 is the chart for indicating the result of sliding capability test of the syringe of product of the present invention and existing product.
Specific embodiment
Hereinafter, being described in detail based on attached drawing to syringe involved in one embodiment of the present invention.In addition, with
One embodiment of lower explanation is to illustrate, and the present invention is not limited to an embodiments.
(overall structure of syringe)
Firstly, being illustrated to the overall structure of the syringe (10).As shown in Figure 1, the syringe (10) has nozzle
(21), end wall (24), outer cylindrical portion (20), gasket (30) and plunger (40).
Nozzle (21) is formed as elongate.The nozzle (21) is arranged in a manner of penetrating through the central part of end wall (24).End wall
(24) it is installed on one end of outer cylindrical portion (20).The axle center of nozzle (21) and the axle center of outer cylindrical portion (20) are substantially uniform.Outer cylindrical portion
(20) another end opening.Gasket (30) is inserted by the inside of the outward opening canister portion (20).End wall in outer cylindrical portion (20)
(24) it is formed between gasket (30) reception room (4).The internal path of nozzle (21) and reception room (4) are interconnected.
Gasket (30) is connect with the end of plunger (40).If depressing plunger (40) moves gasket (30) forwards, on
Reception room (4) are stated to shrink and the liquid (5) of reception room (4) is flowed out by nozzle (21) to the outside of syringe (10).Separately
On the one hand, if plunger is pulled to nearby and moves gasket rearward, above-mentioned reception room (4) is expanded and makes syringe (10)
Outside liquid (5) by nozzle (21) to reception room (4) flow into.
(lubricating structure of the sliding part of syringe)
Next, being illustrated to the lubricating structure of the slipper in syringe (10).
Hydrops room-
It is provided with hydrops room (3) in the syringe (10), hydrops room (3) are supplied as the slipper of opposite syringe (10)
The hydrops portion that the liquid (5) given is accumulated.
As shown in Fig. 2, gasket (30) has a small diameter portion (31) and a front side large-diameter portion (32), small diameter portion respectively
(31) from the internal perisporium (22) of outer cylindrical portion (20) to radial separation, front side large-diameter portion (32) is used as and is successively formed in small diameter portion
(31) large-diameter portion of front side.In addition, being continuously formed rear side large-diameter portion (33) on rear side of small diameter portion (31).These major diameters
The periphery wall (35,36) in portion (32,33) and internal perisporium (22) sliding contact of outer cylindrical portion (20).The periphery of large-diameter portion (32,33)
Wall (35,36) and the internal perisporium (22) of outer cylindrical portion (20) are the sliding parts (11) of syringe (10).
Although in addition, the gasket (30) of an embodiment is respectively provided with a front side large-diameter portion (32) and a small diameter portion
(31), but not limited to this, can also by front side large-diameter portion (32) and small diameter portion (31) as one group along gasket (30)
Length direction is formed continuously multiple groups.After being continuously formed on rear side of the small diameter portion (31) of the most end with gasket
Side large-diameter portion (33).
Slipper (1) structure between the internal perisporium (22) of outer cylindrical portion (20) and the periphery wall (35) of front side large-diameter portion (32)
Become: the liquid (5) of the hydrops room (3) of gasket (30) with by plunger (40) to nearby pull when gasket (30) sliding and
Into slipper (1).The liquid (5) plays a role as lubricant as a result, so that gasket (30) swimmingly moves.
In addition, for the gasket (30), the periphery wall (35) of front side large-diameter portion (32) and the end face (37) of back side
Cross section with circular arc (referring to Fig. 2 50).The case where intersecting part is formed by corner as a result, is compared, hydrops
The liquid (5) of room (3) is easily accessible the slipper (1) of front side large-diameter portion (32).As a result, gasket (30) more swimmingly moves
It is dynamic.
Here, although the sliding surface of the slide area of the front side large-diameter portion (32) of the gasket (30) and rear side large-diameter portion (33)
Product is roughly the same, but is for example also possible to the sliding surface of the front side large-diameter portion (32) of slide area relative to gasket (30) entirety
Long-pending ratio is greater than the ratio of the slide area of rear side large-diameter portion (33).The liquid (5) of hydrops room (3) is by front side large-diameter portion
(32) side supplies, as a result, by the way that the slide area of front side large-diameter portion (32) is set as the slide area than rear side large-diameter portion (33)
Greatly, gasket (30) can be made more swimmingly to move.
In addition, the slide area of the rear side large-diameter portion (33) of the slide area relative to gasket (30) entirety will not be interfered
Ratio is greater than the ratio of the slide area of front side large-diameter portion (32).In addition, the gasket (30) of the syringe (10) of an embodiment
It is configured to the slipper for not making the liquid (5) of hydrops room (3) enter rear side large-diameter portion (33), as a result, the liquid of hydrops room (3)
(5) it will not be revealed to than the position of rear side large-diameter portion (33) rearward, but not limited to this, can also be with hydrops room (3)
The mode that liquid (5) enters the slipper of rear side large-diameter portion (33) moves gasket (30) more swimmingly.
Fluid path-
In addition, as shown in Figure 3,4, being provided in the syringe (10) by the reception room (4) and gasket of outer cylindrical portion (20)
(30) fluid path (2) that hydrops room (3) connection is got up.
Outer cylindrical portion (20) has from its internal perisporium (22) to radially inner side multiple flanges (23) outstanding.These flanges (23)
Near the end wall (24) of outer cylindrical portion (20).If depressing plunger (40), gasket (30) slides forwards.Gasket (30) is by bullet
Property body constitute, with the sliding forwards of gasket (30), the periphery wall (35) of the front side large-diameter portion (32) of gasket (30) more on
To above-mentioned flange (23) (referring to Fig. 3).Moreover, this more on part occur flexible deformation, as shown in figure 4, in front side large-diameter portion
(32) recessed portion (34) are formed.Aforesaid liquid access (2) are formed in the inside of the recessed portion (34).
The sliding that flange (23) is formed as the periphery wall (35) of its axial length (L1 of Fig. 3) ratio front side large-diameter portion (32) connects
The axial length (L2 of Fig. 3) of contact portion point is long, and the cunning of the periphery wall (35) than the front side large-diameter portion (32) of above-mentioned gasket (30)
The total length (L3 of Fig. 3) of the axial length of the small diameter portion (31) of the axial length and above-mentioned gasket (30) of dynamic contact portion
It is short.By the way that the axial length of flange (23) is set as to make the hydrops of the reception room (4) of outer cylindrical portion (20) and gasket (30) than L2 long
Room (3) is reliably connected to, by the way that the axial length of flange (23) is set as shorter than L3, make the reception room (4) of outer cylindrical portion (20) with
The slipper of rear side large-diameter portion (33) is not connected to.
In front side large-diameter portion (32) it is whole it is upper to flange (23) when, in the fluid path (2) of recessed portion (34), outer cylinder
The reception room (4) in portion (20) is connected to the hydrops room (3) of gasket (30).Using the connection, the one of the liquid (5) of reception room (4)
Part flows into hydrops room (3).The liquid of the reception room (4) is supplied via hydrops room (3) to slipper (1).In addition, liquid
The two sides of access (2) be slipper (1), as a result, the liquid (5) of reception room (4) the midway that fluid path (2) flows by
The slipper (1) of two sides supplies.
Flange (23) is formed as the linear of the axial direction along outer cylindrical portion (20).In addition, flange (23) is not limited to straight line
Shape is also possible to helical form, oblique line shape etc., but needs for its axial length to be set as the periphery wall (35) than front side large-diameter portion (32)
Slidably contacting section axial length it is long.This is because if not setting, the curtailment of recessed portion (34), thus
The hydrops room (3) of the reception room (4) and gasket (30) that can not make outer cylindrical portion (20) using the fluid path (2) of recessed portion (34) is even
It is logical.
In addition, flange (23) is centered on the axle center of outer cylindrical portion (20) in the circumferential with there are four the configurations of 90 ° of interval.This
Outside, the interval of the quantity of flange (23) and flange (23) is only to illustrate, and quantity and interval are not limited to an embodiment,
The quantity of flange (23) is also possible to the quantity in addition to four, and flange (23) and the circumferential interval of flange (23) are also possible to
Unequal spacing.
In addition, the front end face of flange (23) is formed flatly.In one embodiment, the length of flange (23) is set as
The width of 5mm, flange (23) are set as 0.3mm.In addition, the height of flange (23) is set as 0.1mm.By the front end of flange (23)
Face is formed flatly, can be upper to flange in gasket (30) as a result, compared with the case where front end of flange (23) is acute angle
(23) when, flange (23) is made to be difficult to hurt gasket (30).In addition, in flange (23), in two sides and flat front end face
Circular arc is arranged in cross section, thus, it is more difficult to hurt gasket (30).
In addition, flange (23) also may be constructed are as follows: the end of the open side of outer cylindrical portion (20) axially, height from
The open side of outer cylindrical portion (20) is slowly got higher towards end wall (24).In this way, the sloped-end by making flange (23), can push away
When hydraulic plunger (40), keep gasket (30) easily upper to flange (23).
Reception room-
In addition, for the syringe (10), even if being advanced to by the gasket (30) that plunger (40) push by end wall
(24) through hole (25) of nozzle (21) is closed, then as shown in figure 5, the outer periphery of the ratio through hole (25) in end wall (24)
The gap (S) as reception room (4) is also formed between part (26) in the outer part and gasket (30).In other words, it constitutes
Are as follows: at the time of gasket (30) encloses through hole (25) of end wall (24), gasket (30) not with end wall (24) seamlessly
Contact.
The front side large-diameter portion (32) of gasket (30) has coniform front end (38).On the other hand, outer cylindrical portion (20)
End wall (24) is formed as the cone cell expanding towards the outer periphery of end wall (24) from the outer periphery of through hole (32).It is above-mentioned coniform
The apex angle of front end (38) front end (38) consistent and coniform with through hole (32) axle center of above-mentioned end wall (24) is less than
The cone angle of end wall (24), even if the through hole (32) of top blocking end wall (24) of coniform front end (38) as a result, preceding
The gap (S) for constituting reception room (4) is also formed between side large-diameter portion (32) and end wall (24).
The flange (23) of outer cylindrical portion (20) is with the outer of the axially front side of the end of its axially front side and outer cylindrical portion (20)
The mode of peripheral contact is formed, and the fluid path (2) of the recessed portion (34) of the gasket (30) generated as a result, by flange (23) is in structure
At the clearance opening of above-mentioned reception room (4).
If from the further depressing plunger of the state (40), coniform front end (38) flexible deformation and above-mentioned reception room
(4) it shrinks, liquid (5) is supplied by fluid path (2) to the hydrops room (3) of gasket (30).Nozzle (21) is due to coniform
Front end (38) and become blocked state, the liquid (5) of reception room (4) is easy (3) one side's row of vector product liquid chamber as a result,
Into.
As described above, by constituting the lubricating structure of syringe (10), the liquid of hydrops room (3) will can be lodged in
(5) liquid (5) are used as lubricant to slipper (1) supply of outer cylindrical portion (20) and gasket (30), so as to reduce
Resistance to sliding between outer cylindrical portion (20) and gasket (30).By reducing the resistance to sliding, can easily by plunger (40) to
Nearby pull.
(sliding capability of syringe is tested)
It is illustrated next, testing the sliding capability of syringe (10) with its result.In sliding capability test,
Compared in product of the present invention and existing product outer cylindrical portion (20) when being pulled to the plunger (40) of syringe (10) nearby with
Resistance to sliding value between gasket (30).
Firstly, gasket (30) is inserted into defined position to the outer cylindrical portion (20) of syringe (10) of the invention.Thereafter,
The front end of nozzle (21) is dipped in the medical fluid (5) as liquid, plunger (40) is pulled to nearby, thus to outer cylindrical portion (20)
Reception room (4) fills medical fluid (5).
After filling the medical fluid (5), depressing plunger (40), and the recess generated by flange (23) is formed in gasket (30)
Portion (34) is supplied the medical fluid (5) of reception room (4) to the hydrops room (3) of gasket (30) by the fluid path (2) of recessed portion (34)
To defined amount.In the case where existing product, due to there is no flange (23), so to reception room (4) filling medical fluid (5) it
Afterwards, it is adjusted in such a way that the axial position of gasket (30) becomes position identical with product of the present invention.
Next, measuring stress when pulling plunger (40) with the speed of 500mm/min.The stress becomes outer cylindrical portion (20)
With the resistance to sliding value between gasket (30).The test has respectively respectively carried out product of the present invention and existing product five times.
Its result is shown in FIG. 6.
It will be appreciated from fig. 6 that the resistance to sliding value of product of the present invention is reduced compared with existing product to about 1/5 or so.As a result, originally
Invention product, which has, to be easy to pull plunger (40) this significant effect compared with existing product.
The liquid volume of hydrops room (3) is more, then the resistance to sliding value of syringe (10) is lower.Thus, it is believed that hydrops room (3)
Liquid volume it is more, the amount into the medical fluid (5) of the slipper (1) between outer cylindrical portion (20) and gasket (30) is more, thus
Promote the lubrication of the slipper and improves sliding capability.
(endoscopy for having used syringe)
Next, being illustrated to the endoscopy for having used the syringe.
The syringe is for example for putting into medical fluid by endoscope.
After in endoscope insertion body, the front end of syringe (10) is mounted on to the opening portion for being formed in endoscope.?
The reception room (4) of syringe (10) be filled with medical fluid, the plunger (40) of push injection device (10), make the medical fluid of reception room (4) from
Syringe (10) outflow.Medical fluid is spread from the forceps channel of endoscope to internal by the internal path of endoscope.
At this point, can also remain medical fluid in endoscope even if shifting the plunger (40) of syringe (10) onto bottom.In order to incite somebody to action
The remaining medical fluid is discharged out of endoscope, after for the time being removing syringe (10) from endoscope, plunger (40) is pulled to make
Air is flowed into the reception room (4) of syringe (10).And then secondary install the syringe for having flowed into air (10) to interior is peeped
Mirror, the air of reception room (4) is discharged depressing plunger (40) from syringe (10), to will remain in endoscope using the air
Interior medical fluid discharge.
If, being capable of smooth pulling column compared with existing syringe using the syringe (10) of an above-mentioned embodiment
It fills in (40).Thereby, it is possible to be simply streamed into air in the reception room (4) of syringe (10), in the injection that will enter air
Device (10) is installed to endoscope again, and the plunger (40) of push injection device (10) inwardly peeps the air in syringe (10)
Mirror conveying, can be such that the medical fluid remained in endoscope is easily discharged.
(other embodiments)
In one embodiment, multiple flanges (23) are formed in outer cylindrical portion (20) and forms fluid path (2), but not
It is defined in this, for example, it is also possible to keep the peripheral part of outer cylindrical portion (20) partly prominent to radial outside, and in the protrusion
Gap is formed between internal perisporium (22) and gasket (30), to form fluid path (2) in the gap.So, do not make to pad
Piece (30), which partly deforms, is just capable of forming fluid path (2).In this case, it can also obtain same as the present invention
Effect.
In addition, in one embodiment, the length L1 of the flange (23) of syringe (10) is formed as L2 < L1 < L3, but simultaneously
It is not limited to this, L3≤L1 can also be formed as.The length L1 of flange (23) can also be made to after than rear side large-diameter portion (33)
The direction of side end face rearward extends.At this point, can be by the liquid (5) of fluid path (2) to the cunning with rear side large-diameter portion (33)
The adjacent hydrops portion supply of the rear side of dynamic part, to can be also lubricated to the slipper of rear side large-diameter portion (33).
Industrial utilization feasibility
More than, as described, the present invention relates to syringes especially for the outer cylindrical portion for reducing insertion syringe
The countermeasure of the resistance to sliding of gasket is useful.
Description of symbols:
1 ... slipper；2 ... fluid paths；3 ... hydrops rooms (hydrops portion)；4 ... reception rooms；5 ... liquid；10 ... injections
Device；11 ... sliding parts；20 ... outer cylindrical portions；21 ... nozzles；22 ... internal perisporiums；23 ... flanges；24 ... end walls；30 ... gaskets；31…
Small diameter portion；32 ... front side large-diameter portions (large-diameter portion)；33 ... rear side large-diameter portions；40 ... plungers.
Claims (6)
1. a kind of syringe, which is characterized in that have:
The end wall that nozzle is penetrated through；
It is connected with the outer cylindrical portion of the end wall at one end；
Along gasket sliding back and forth, being made of elastomer in the outer cylindrical portion；And
In the plunger that front end is connect with the gasket,
The outer cylindrical portion has the hydrops portion adjacent with the rear side of the slipper of the gasket,
The gasket has at least one small diameter portion and at least one front side large-diameter portion, and the small diameter portion is from the outer cylinder portion
From, the front side large-diameter portion it is successively formed in the front side of the small diameter portion, and the gasket is in the small diameter portion of most end
Rear side has been continuously formed rear side large-diameter portion, between the outer cylindrical portion and the front side large-diameter portion and the rear side large-diameter portion
It is respectively formed with slipper, the radial clearance between the outer cylindrical portion and the small diameter portion is formed with hydrops portion,
In the state that the gasket advances to and closes the through hole of the nozzle of the end wall, described in the ratio in the end wall
Be formed with gap between the outer periphery of through hole part in the outer part and the gasket, and be formed in the clearance opening and
The fluid path being connected to the hydrops portion, the fluid path are configured to abut to form in the side of the gasket, do not make institute
Gap is stated to be connected to the slipper of the rear side large-diameter portion, after the through hole for enclosing the nozzle by the gasket, institute
Gasket is stated to be pushed forwards by the plunger and press on the end wall and flexible deformation, thus make the gap constrictions, with
The liquid of the contraction in the gap, the gap is conveyed by the fluid path to the hydrops portion.
2. syringe according to claim 1, which is characterized in that
The outer cylindrical portion has from internal perisporium to radially inner side flange outstanding,
The fluid path is formed in the gasket when sliding along the longitudinal direction, and the upper part to the flange is deformed
And the recessed portion formed.
3. syringe according to claim 2, which is characterized in that
It is longer than the axial length of the front side large-diameter portion of the gasket that the flange of the outer cylindrical portion is formed as axial length.
4. syringe according to claim 2 or 3, which is characterized in that
The flange of the outer cylindrical portion is formed with one, or is formed in the circumferential direction of the outer cylindrical portion in mode spaced apart
It is multiple.
5. syringe according to claim 1, which is characterized in that
The outer cylindrical portion is formed with the groove portion axially extended in internal perisporium,
The fluid path is formed in the inside of the groove portion.
6. syringe according to any one of claim 1 to 3, which is characterized in that
The front end of the gasket is formed as coniform,
The end wall is formed as the expanding cone cell in the outer periphery from the outer periphery of the through hole towards the end wall,
The apex angle of the coniform front end is less than the cone angle of the end wall.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014057832A JP6523610B2 (en) | 2014-03-20 | 2014-03-20 | Syringe |
| JP2014-057832 | 2014-03-20 | ||
| PCT/JP2015/056244 WO2015141462A1 (en) | 2014-03-20 | 2015-03-03 | Syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106132461A CN106132461A (en) | 2016-11-16 |
| CN106132461B true CN106132461B (en) | 2019-08-16 |
Family
ID=54144437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580014528.7A Active CN106132461B (en) | 2014-03-20 | 2015-03-03 | Syringe |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6523610B2 (en) |
| CN (1) | CN106132461B (en) |
| WO (1) | WO2015141462A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016205314A1 (en) * | 2015-06-16 | 2016-12-22 | Zebrasci, Inc. | Self-lubricating medical syringes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4439184A (en) * | 1982-05-03 | 1984-03-27 | Concord Laboratories, Inc. | Two-dose syringe |
| US4469482A (en) * | 1981-07-29 | 1984-09-04 | Duphar International Research B.V. | Disposable hypodermic syringe |
| US4496344A (en) * | 1981-08-10 | 1985-01-29 | Duphar International Research B.V. | Multiple-compartment syringe |
| CN102962914A (en) * | 2011-08-31 | 2013-03-13 | 住友橡胶工业株式会社 | Mold for gasket for prefilled syringe |
| JP5318687B2 (en) * | 2009-07-21 | 2013-10-16 | 大和特殊硝子株式会社 | Syringe plug, syringe equipped with the same, and method of plugging the syringe plug |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2720125A1 (en) * | 1977-05-05 | 1978-11-16 | Wimmer Pharma Gummi Gmbh | Injection syringe separating piston - with elastomer head for forward sealing and backward relieving action |
| US20050154353A1 (en) * | 2004-01-09 | 2005-07-14 | Alheidt Thomas A. | Positive displacement flush syringe |
-
2014
- 2014-03-20 JP JP2014057832A patent/JP6523610B2/en active Active
-
2015
- 2015-03-03 WO PCT/JP2015/056244 patent/WO2015141462A1/en active Application Filing
- 2015-03-03 CN CN201580014528.7A patent/CN106132461B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4469482A (en) * | 1981-07-29 | 1984-09-04 | Duphar International Research B.V. | Disposable hypodermic syringe |
| US4496344A (en) * | 1981-08-10 | 1985-01-29 | Duphar International Research B.V. | Multiple-compartment syringe |
| US4439184A (en) * | 1982-05-03 | 1984-03-27 | Concord Laboratories, Inc. | Two-dose syringe |
| JP5318687B2 (en) * | 2009-07-21 | 2013-10-16 | 大和特殊硝子株式会社 | Syringe plug, syringe equipped with the same, and method of plugging the syringe plug |
| CN102962914A (en) * | 2011-08-31 | 2013-03-13 | 住友橡胶工业株式会社 | Mold for gasket for prefilled syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015181505A (en) | 2015-10-22 |
| CN106132461A (en) | 2016-11-16 |
| JP6523610B2 (en) | 2019-06-05 |
| WO2015141462A1 (en) | 2015-09-24 |
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