CN202776328U - Indwelling needle with syringe type vacuum blood collector - Google Patents

Abstract

The utility model relates to a vacuum blood collecting instrument used outside the human bodies for clinical care, in particular to an indwelling needle with a syringe type vacuum blood collector. The indwelling needle with the syringe type vacuum blood collector is characterized in that a syringe is rigidly connected with a vascular access needle tubing, a blood taking needle tubing and a blood sample collecting pipe, the vascular access needle tubing, the blood taking needle tubing and the blood sample collecting pipe can not only be integrated into a whole but also can be combined to form a traditional needle tubing structure. The indwelling needle with the syringe type vacuum blood collector has the advantages that the structure is simplified, the control operating is convenient, and the operating process of the vacuum blood collector with the indwelling catheter is very similar to a traditional needle tubing operation. Amount of work and psychological burden of medical workers are reduced in maximum, thereby improving safety and success degree of operation. Due to the fact that the medical workers do not use a catheter group to process blood taking, but directly use the vascular access needle tubing to process the blood taking and catheter retaining, potential risks of thrombus and blood return pollution is avoided. And the blood taking and the catheter retaining can be done simultaneously only by puncturing patients once, thereby facilitating the transfusion therapy, reducing pain of the patients, and reducing the amount of work of the medical workers.

Description

Remaining needle with syringe-type vacuum blood collector

Technical field

This utility model relates in the clinical treatment a kind of human body and keeps somewhere apparatus outward, particularly a kind of remaining needle with syringe-type vacuum blood collector.

Background technology

In the prior art a kind of blood sampling indwelling equipment as shown in Figure 1, it is formed by the docking when the vacuum blood collection of a kind of venous detaining needle 8 and a kind of vacuum blood sampler.Vacuum blood sampler comprises blood taking needle and blood sample collecting pipe 2, and blood taking needle one end is vascular puncture needle tubing 11, and the other end is with gum cover blood-collecting needle tube 12, and is middle by 16 connections of PVC hose connector.Its use principle is: carry out external placement inlying catheter with venous detaining needle 8 first, dock blood-letting with the vascular puncture needle tubing 11 in the vacuum blood sampler with remaining needle extension tube Connection Block again, this method exists very large inconvenience and potential safety hazard.Because remaining needle is before using, need refute first and connect transfusion device and carry out aerofluxus and check whether the retention needle infusion passage is unobstructed, puncture and intubation just after closing transfusion adjusting switch, put and to close extension tube passage on the inlying catheter after managing successfully, be ready to pull out infusion apparatus joint behind the waste fluid container, open extension tube passage on the inlying catheter, emit the interior liquid of inlying catheter to waste fluid container, until a little outflow reverse interface of blood, again close extension tube passage on the inlying catheter, connect vacuum test tube, open again extension tube passage on the inlying catheter, until required blood sampling volume is closed extension tube passage on the inlying catheter again, extract blood taking instrument, must at once connect infusion apparatus joint, again open extension tube passage on the inlying catheter, be right after and open the transfusion device switch, utilize the transfusion medicinal liquid that sufferer blood in the extension tube is advanced in the blood vessel, carry out normal infusion.This shows, this blood sampling indwelling equipment has following weak point: in blood collection procedure, pull out hemostix and refute to connect between the transfusion device transfusion spacer segment is arranged, sufferer blood rests in the inlying catheter, easily causes blood coagulation and exists thrombosis dangerous, simultaneously extension tube reverse interface inner blood, with contact with air, blood is subject to air pollution, sends back in the sufferer blood vessel again, has very large potential safety hazard; Action is loaded down with trivial details in the operation, needs very skilled operation maneuver, and misoperation easily causes the blood contamination environment, also can cause the feared state of mind to sufferer simultaneously; And vacuum blood sampler is because blood taking needle and 2 minutes body structures of collecting pipe, blood collection procedure need be cared for two needle tubing of hose connector 16 simultaneously, cause complicated operation loaded down with trivial details, a plurality of operating procedures even need both hands and also need impose certain and just right power just to finish extracting and inserting of needle tubing, and just can't care for the needle tubing of other end this moment, involves so again the co-operating that needs more than one medical personnel.The existence of the operating procedure that this complexity is loaded down with trivial details and two needle tubing, medical personnel's workload and psychological burden have virtually been increased, under the sight that the limb activity amplitude is large suffering from unconsciousness, restless, disoperative patient and infant patient, produce easily maloperation.

The utility model content

The purpose of this utility model is to overcome weak point of the prior art, and a kind of designs simplification, simple to operate, a kind of remaining needle with syringe-type vacuum blood collector of reducing potential safety hazard are provided.

The purpose of this utility model realizes by following approach.

Remaining needle with syringe-type vacuum blood collector, comprise conduit tube component and needle tubing assembly, conduit tube component comprises conduit, catheter block, batching pig, extension tube, Connection Block and closeouts etc., it forms main points and is: the needle tubing assembly is a kind of vacuum blood collector, comprise the vascular puncture needle tubing, blood-collecting needle tube, blood sample collecting pipe and syringe, the tail end of vascular puncture needle tubing is plugged on the Paracentesis needle holder of syringe front portion with the mode off-centre near the syringe outer peripheral face, the needle point of this needle tubing and the major part of needle tubing are all exposed outside syringe and are passed batching pig, by the catheter block inner chamber, pass conduit, needle point exposes catheter tip, syringe inside has an annular seal space and a cylindrical cavity, before wherein annular seal space is positioned at cylindrical cavity, the tube core of vascular puncture needle tubing is communicated with the sealing chamber, the front end of blood-collecting needle tube is installed with on the wall of sealing chamber, rear end and needle tubing major part extend back and are plugged in the pipe close of blood sample collecting pipe, the tube core of blood-collecting needle tube is communicated with the sealing chamber, cylindrical cavity is positioned at rear and its rear end of annular seal space and opens, blood sample collecting pipe pipe close is nested with in this cylindrical cavity in removable mode front, blood sample collecting pipe pipe close aft bulkhead has a sealant that can be pierced through by the blood-collecting needle tube rear end, the cylindrical cavity of blood sample collecting pipe front end face has for piercing through the front accommodating space of blood sample collecting pipe that pushes away of this sealant, vascular puncture needle tubing tube core, annular seal space, the blood-collecting needle tube tube core and be pierced sealant after blood sample collecting pipe tube chamber form a kind of blood channel.

Like this, with syringe rigid attachment vascular puncture needle tubing, blood-collecting needle tube and blood sample collecting pipe, make not only Construction integration but also form a kind of traditional needle cylinder structure, designs simplification of three, control easy to operately, and operating process is extremely similar to the operation of conventional syringes.

During blood sampling, carry out first conventional bleeding, that is: with the Connection Block on the transfusion device access conduit tube component, the needle tip of dropping back is a little opened the transfusion device flow valve, and conduit tube component is carried out aerofluxus, then closes flow valve, and needle tip is resetted; Then carry out again the puncture blood collecting operation, that is: controlling syringe thrusts the vascular puncture needle tubing in the sufferer arm vein, when seeing blood back, one hand-held firmly syringe, another hands or same on the other hand another finger sinciput blood sample collecting pipe, make the blood-collecting needle tube rear end pierce through the sealant of blood sample collecting pipe pipe close, because the negative pressure of blood sample collecting pipe tube chamber, blood flows into the speed in this collecting pipe.To be collected to required sample amount, if need to gather the multitube blood sample, only need one hand that collecting pipe is extracted from cylindrical cavity, the outer blood sampling sealing shroud of being made by soft rubber sleeve of blood-collecting needle tube this moment restores, encase blood-collecting needle tube, prevent that blood flows out contaminated environment in the conduit, and then insert new blood sample collecting pipe; If do not need to draw blood again, only need extract first the needle tubing that punctures on the human body, put needle tip shield, pull out again collecting pipe and get final product.

After the puncture needle tubing is withdrawn from, and in the catheter retaining blood vessel, open the transfusion device flow valve and just can carry out the normal infusion treatment.

Owing to take a blood sample without conduit tube component, but directly take a blood sample by the puncture needle tubing, blood can not enter conduit and extension tube during blood sampling, thereby both needn't carry out the operation that stagnant blood pushes back blood vessel, can not produce the potential safety hazard that thrombosis and blood back pollute yet.And only need once can finish simultaneously blood sampling and catheter retaining to the sufferer puncture, and make things convenient for infusion treatment, it is painful to have reduced sufferer, has alleviated again medical worker's workload.

The purpose of this utility model can also realize by following approach.

Arrange that near the syringe outer peripheral face vascular puncture needle tubing that also extends forward is parallel with the center of syringe.

The annular seal space of syringe front portion is a kind of blood back cavity, has the perspective section of observable blood back on the suitable position in syringe outer peripheral face and sealing chamber.

The syringe leading section is the wedge shape of stretching under a kind of upper contracting, and the vascular puncture needle tubing is affixed at lower extending end head and the syringe of this wedge shape, and the perspective section of observable blood back is positioned on the inclined-plane of this wedge shape.

The upper contracting end on this wedge shape inclined-plane intersects with the outer peripheral face of syringe, and the lower extending end on this wedge shape inclined-plane forms a kind of small boss A in the position near the syringe outer peripheral face, and vascular puncture needle tubing tail end is affixed by this boss A and syringe.

Like this, this wedge shape inclined-plane faces the operator who bends to operate, and is convenient to observe.

This perspective section can use transparent material to make.

Have a small boss B on the annular seal space bonnet, the blood-collecting needle tube front end is fixed on this boss B.

Blood-collecting needle tube and syringe arranged concentric, and extend along the syringe center back.

Cylindrical cavity has front bulkhead, has the interval between sealing chamber bonnet and the cylindrical cavity front bulkhead, extend back pass this cylindrical cavity front bulkhead blood-collecting needle tube simultaneously bearing on this cylindrical cavity front bulkhead.

Like this, blood-collecting needle tube has possessed preferably support connection rigidity.

Blood-collecting needle tube is coated with the blood sampling sealing shroud, and blood sample collecting pipe pipe close center is provided with the core hole that extends axially to sealant, and this core hole internal diameter is slightly larger than blood sampling sealing shroud external diameter.

Like this, when penetrating pipe close along this core hole, the blood sampling sealing shroud is subject to axial compression compression radial distorted dilatating and deformable to the blood taking needle pipe racks with the blood sampling sealed tube, core hole inner hole wall extrusion friction therewith just in time, and the more unlikely blood-collecting needle tube that allows is deviate from blood sample collecting pipe pipe close.

Blood sample collecting pipe pipe close sealant thickness is 3-0.5MM, preferably 1.5-0.5MM.

Blood-collecting needle tube can easily be worn out sealant like this.

Have the structure suitable with blood sample collecting pipe pipe close in the cylindrical cavity, this structure not only makes things convenient for packing into and taking out of blood sample collecting pipe, simultaneously again with the blood sample collecting pipe pipe close annexation of formation than consolidation that be connected.

The further optimization of this structure can be like this: the blood sample collecting pipe is plugged in the cylindrical cavity, and suitable structure is the structure that interference fits connects on a kind of size.

Can also be like this: the cylindrical cavity inwall be along circumferentially being symmetrically arranged with the structure that touches with the adaptive place of blood sample collecting pipe pipe close elastic card, when the two is in the tactile state of card, before the blood-collecting needle tube rear end just is in sealant to be pierced through.

So both conveniently be inserted in blood sample collecting pipe in the cylindrical cavity and can not come off out when upright, provided again the insertion degree of the blood sample collecting pipe that is installed in the cylindrical cavity from sense of touch, thus convenient the installation.

It can be a kind of short arc convex clamping point that this elastic card touches structure, and perhaps this short arc convex clamping point or blood sample collecting pipe pipe close are made by elastomeric material.

This elastic card touches the urgent connection status of elasticity that structure can cause cylindrical cavity inwall and pipe close, but when applying axial force, the blood sample collecting pipe still relatively cylindrical cavity do freely before push away or retreat.

This short arc convex clamping point is as the term suggests be exactly a kind of prominent protruding salient point on the cylindrical cavity inwall, and thickness hangs down shallow and the front and back side all has arc-shaped transition, so that creeping of pipe close passed through.

Can also touch the adaptive connection structure that increases separately other on the basis of constructing at this elastic card and be used to reach better result of use, below be being used of wherein a kind of optimization:

The structure that cylindrical cavity is interior and pipe close is suitable is a kind of a plurality of structure that inwalls circumferentially distribute or symmetrical elastic card touches along cylindrical cavity, another kind of suitable structure is to be produced on the L shaped groove on the pipe close outer peripheral face and to be produced on prominent salient point on the cylindrical cavity inwall, should vertically enter L shaped groove and can slide therein in the termination of section from the L shaped groove that is positioned at the pipe close front end face by prominent salient point, when cylindrical cavity inwall and pipe close elastic card touch, should prominent salient point have entered in vertical section in the L shaped groove but not yet arrived this vertically bottom of section, before this moment, the blood-collecting needle tube rear end just was in sealant to be pierced through, when sinciput blood sample collecting pipe to blood-collecting needle tube puncture through seal layer, should just arrive this vertically bottom of section by prominent salient point, rotate the blood sample collecting pipe this moment, and this prominent salient point enters the cross break section in the L shaped groove.

Like this, the cross break section in the L shaped groove can locked blood sample collecting pipe degree of freedom in the axial direction, make its relative syringe can not before push away and can not retreat.

Can be again like this: the blood sample collecting pipe be threaded in the cylindrical cavity, and suitable structure is a kind of structure that is threaded.

Blood sample collecting pipe pipe close is comprised of seal rubber plug and over cap, and fluid sealant plug sleeve plug is in the collecting pipe tube chamber, and the over cap capping plug is on the collecting pipe mouth of pipe and seal rubber plug.

With the suitable structure operated by rotary motion of cylindrical cavity on over cap.

The length of cylindrical cavity is less than the length of blood sample collecting pipe, and the afterbody that is nested with the blood sample collecting pipe in cylindrical cavity exposes outside cylindrical cavity.

Syringe with blood sample collecting pipe pipe close in be contained on the position suitable in the syringe and axially be provided with a kind of rectangular groove as operation window along syringe, this operation window has two, relatively is distributed in the both sides of syringe.

Can observe blood back by this operation window like this, observe the state of blood volume in the blood sample collecting pipe, also the insertion state of observable blood sample collecting pipe and insertion degree, also can be when extracting the blood sample collecting pipe, see through first this operation window and grip pipe close and firmly withdraw from backward the blood sample collecting pipe, thus the disengaging of collecting pipe body and pipe close when preventing from withdrawing from the blood sample collecting pipe.

Be provided with a kind of tactile platform on close that side outer peripheral face of syringe of vascular puncture needle tubing, this tactile platform bottom surface is a kind of planar shaped or is the suitable arcs of recesses of a kind of and human body ancon.

This tactile platform make things convenient for syringe and human body by touching, increase the frictional force of syringe and human skin, make syringe be difficult for slippage.

Be provided with a kind of soft deposited wing on close that side outer peripheral face of syringe of vascular puncture needle tubing, this soft deposited wing and syringe are affixed, and both sides have the span, apply wing bottom surface and are a kind of planar shaped or are the suitable arcs of recesses of a kind of and human body ancon.

This deposited wing make things convenient for syringe and human body by touching, increase the frictional force of syringe and human skin, make syringe be difficult for slippage.

Can also further in the deposited wing bottom surface viscous adhesive point be set.

When blood sampling finishes; if be able to the puncture needle tubing is retracted in the protective sleeve inner chamber, other people cause the injuries such as infection can to prevent the accidental injury of puncture needle bobbin point, like this; this utility model can further be deepened the syringe-type vacuum blood collector for a kind of safety, and wherein a kind of mode is:

Paracentesis needle holder is arranged in the syringe inner chamber of syringe front bulkhead inboard, the Paracentesis needle holder inner chamber is annular seal space, extend axially a kind of tail end on the barrel sidewall and be provided with the sliding tray that retreats obstacle, Paracentesis needle holder pushes away that handle is prominent to be passed this sliding tray and be exposed at outside the syringe, the axial length of syringe inner chamber is greater than the length of exposing the puncture needle tubing outside syringe, puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube and even collecting pipe form the slide unit that a kind of relatively syringe retreats slip, along with retreating of the slide unit needle tubing that punctures retracts in the syringe inner chamber.

When blood sampling finishes, can be along this sliding tray pusher Paracentesis needle holder and puncture needle tubing, in the syringe, this moment, syringe was again as protective sleeve until the puncture needle tubing submerges fully.The sliding tray tail end retreats obstacle and can stop the Paracentesis needle holder of recession and puncture needle tubing to pass syringe.This obstacle that retreats can be a kind of prominent protruding stuck point at the sliding tray tail end, also can be the sealing of sliding tray tail end.

The further optimization of this mode is:

Also include a kind of non-return device, this non-return device is installed between slide unit and the syringe, is retracted into slide unit in the syringe inner chamber to the puncture needle tubing and pushes away before reverse non-return device is therewith stoped contact if retreat.

Like this, because of the prevention of non-return device, retreat the slide unit that puts in place can not before push away.Thereby both having guaranteed that the puncture needle tubing that retreats can not passed out again hurts sb.'s feelings, and also can impel the disposable use of this syringe-type vacuum blood collector described in the utility model.

Common in this non-return device aciculiform medical apparatus and instruments in the prior art, mostly can be applied in this utility model.This utility model provides the non-return device of two kinds of optimizations at this:

This non-return device is the symmetrical closed tongue piece of a kind of elasticity, is installed in the syringe inner chamber in Paracentesis needle holder the place ahead, and puncture needle tubing tail end wore the closed joint portion of this closed tongue piece and was fixed on the Paracentesis needle holder.

Like this, after the puncture needle tubing was removed, the tongue piece elastic reset was blocked former puncture needle tubing outlet.

This non-return device is comprised of Elastic buckle and pit, and Elastic buckle is positioned on the syringe, and pit is positioned on the slide unit, retreats the proper and Elastic buckle clamping of its pit of slide unit that puts in place, thereby pushes away before stoping the puncture needle tubing.

This Elastic buckle is comprised of the buckle on elastic suspended tongue and outstanding tongue top, close syringe sliding tray tail end is emptied along the interval parallel with sliding tray and is allowed this empty at sliding tray tail end and sliding tray " U " shape and even wears, these " U " shape central authorities namely form an elastic suspended tongue, buckle is arranged in this elastic suspended tongue top and prominent protruding in sliding tray, and pit is positioned at pushing away on the handle of Paracentesis needle holder.

Retreat the Paracentesis needle holder that puts in place along sliding tray and push away handle, the just therewith buckle clamping of its pit.

The mode of the syringe-type vacuum blood collector of another kind of safety is:

Also include a kind of telescopic protective cover that is fitted together by fixed cover and slip cap slip cap; syringe and slip cap tail end are affixed; Paracentesis needle holder is positioned at slip cap tail end and affixed with syringe; the Paracentesis needle holder inner chamber is annular seal space; the puncture needle tubing is along the slip cap lumen shaft to walking and finally being fixed on the Paracentesis needle holder; slip cap, syringe, puncture needle tubing, Paracentesis needle holder and blood-collecting needle tube and even blood sample collecting pipe form the slide unit that a kind of relatively fixed cover slides, along with the puncture needle tubing that retreats of slide unit retracts in the fixed cover inner chamber.

When blood sampling finishes, but the pusher syringe retreats in the fixed cover inner chamber that submerges the puncture needle tubing, and fixed cover is as the protective sleeve of puncture needle tubing at this moment.

The further optimization of this mode is:

Also include a kind of non-return device, this non-return device is installed between slide unit and the fixed cover, is retracted into slide unit in the fixed cover inner chamber to the puncture needle tubing and pushes away before reverse non-return device is therewith stoped contact if retreat.

Like this, because of the prevention of non-return device, retreat the slide unit that puts in place can not before push away.Thereby both having guaranteed that the puncture needle tubing that retreats can not passed out again hurts sb.'s feelings, and also can impel the disposable use of this syringe-type vacuum blood collector described in the utility model.

Common in this non-return device aciculiform medical apparatus and instruments in the prior art, mostly can be applied in this utility model.This utility model provides a kind of non-return device of optimization at this:

This non-return device is the symmetrical closed tongue piece of a kind of elasticity, is installed in the inner chamber of Paracentesis needle holder the place ahead, fixed cover front bulkhead, and puncture needle tubing tail end wore the closed joint portion of this closed tongue piece and was fixed on the Paracentesis needle holder.

Like this, after the puncture needle tubing was removed, the tongue piece elastic reset was blocked former puncture needle tubing outlet.

Also include a kind of drive end bearing bracket, this drive end bearing bracket is positioned at syringe the place ahead and affixed with fixed cover, drive end bearing bracket outer peripheral face and syringe outer peripheral face smooth transition.

In sum, this utility model has following advantage compared to existing technology: designs simplification, control easy to operate, and operating process is extremely similar to the operation of conventional syringes, medical personnel's workload and psychological burden have been reduced to greatest extent, even under the sight that the limb activity amplitude is large suffering from unconsciousness, restless, disoperative patient and infant patient, also be not easy to produce maloperation, thereby safety and the Degree of Success of operation have been improved.Owing to take a blood sample without conduit tube component, but directly take a blood sample by the puncture needle tubing, blood can not enter conduit and extension tube during blood sampling, thereby both needn't carry out the operation that stagnant blood pushes back blood vessel, can not produce the potential safety hazard that thrombosis and blood back pollute yet.And only need once can finish simultaneously blood sampling and catheter retaining to the sufferer puncture, and make things convenient for infusion treatment, it is painful to have reduced sufferer, has alleviated again medical worker's workload.And the further intervention of safe shape structure, thereby both having guaranteed that the puncture needle tubing that retreats can not passed out again hurts sb.'s feelings, and also can impel this disposable use with remaining needle of syringe-type vacuum blood collector described in the utility model.

Description of drawings

Fig. 1 is a kind of blood sampling indwelling equipment sketch map in the prior art.

Fig. 2 is the outward appearance schematic front view with remaining needle of syringe-type vacuum blood collector described in the utility model.

Fig. 3 is the outward appearance diagrammatic top view with remaining needle of syringe-type vacuum blood collector described in the utility model.

Fig. 4 is the structural representation sectional plan view of the remaining needle with syringe-type vacuum blood collector among this utility model embodiment one.

Fig. 5 is the structural representation cutaway top view of the remaining needle with syringe-type vacuum blood collector among this utility model embodiment one.

Fig. 6 is the syringe cylinder structure signal sectional plan view in the remaining needle with syringe-type vacuum blood collector among this utility model embodiment one.

Fig. 7 is that left view is analysed and observe in the syringe cylinder structure signal in the remaining needle with syringe-type vacuum blood collector among this utility model embodiment one.

Fig. 8 is the syringe cylinder structure schematic isometric in the remaining needle with syringe-type vacuum blood collector among this utility model embodiment one.

Fig. 9 is the schematic appearance of the remaining needle with syringe-type vacuum blood collector among this utility model embodiment two.

Figure 10 is the structural representation sectional plan view of the remaining needle with syringe-type vacuum blood collector among this utility model embodiment two.

Figure 11 is the structural representation cutaway top view of the remaining needle with syringe-type vacuum blood collector among this utility model embodiment two.

Figure 12 is the sketch map of the rear state of remaining needle blood sampling with syringe-type vacuum blood collector among this utility model embodiment two.

Figure 13 is the drive end bearing bracket structural representation sectional plan view in the remaining needle with syringe-type vacuum blood collector among this utility model embodiment two.

Figure 14 is that left view is analysed and observe in the drive end bearing bracket structural representation in the remaining needle with syringe-type vacuum blood collector among this utility model embodiment two.

Figure 15 is the structural representation sectional plan view of the remaining needle with syringe-type vacuum blood collector among this utility model embodiment three.

Figure 16 is the structural representation top view of the remaining needle with syringe-type vacuum blood collector among this utility model embodiment three.

Figure 17 is the drive end bearing bracket structural representation sectional plan view in the remaining needle with syringe-type vacuum blood collector among this utility model embodiment three.

Figure 18 is that left view is analysed and observe in the drive end bearing bracket structural representation in the remaining needle with syringe-type vacuum blood collector among this utility model embodiment three.

Figure 19 is the sketch map of the rear state of remaining needle blood sampling with syringe-type vacuum blood collector among this utility model embodiment three.

Below in conjunction with accompanying drawing this utility model is carried out more detailed description.

Label declaration:

11 needle tube 12 lancets tube 13 needle seat 131 bosses B 132 push handle 14 lancets seat 15 blood seal sets 16 flexible connection pipe 2 blood sample collection tube 21 sealing layer 3 syringes 31 boss A 32 seals cavity 33 cylindrical cavity 34 touch Taiwan 35 Operation window 36 sliding groove 37 retractable protective sleeve cavity 38 short arc convex card points 4 deposited wing 5 closed tabs 6 front cover 71 fixed sets 72 sliding sleeve 8 intravenous catheter 81 catheter 82 catheter hub 83 isolating cock 84 extension tube 85 connecting seat.

The specific embodiment

Embodiment one:

With reference to Fig. 2, Fig. 3, Fig. 4, Fig. 5, have the remaining needle of syringe-type vacuum blood collector, comprise conduit tube component and needle tubing assembly.Conduit tube component comprises conduit 81, catheter block 82, batching pig 83, extension tube 84 and Connection Block 85 etc.The needle tubing assembly is a kind of syringe-type vacuum blood collector, comprises vascular puncture needle tubing 11, blood-collecting needle tube 12, blood sample collecting pipe 2 and syringe 3.Syringe is a hollow barrel-type housing, made by medical transparent material, the syringe leading section is the wedge shape of stretching under a kind of upper contracting, the upper contracting end on this wedge shape inclined-plane intersects with the outer peripheral face of syringe, the lower extending end on this wedge shape inclined-plane forms a kind of small boss A31 in the position near syringe outer peripheral face (namely near the housing inside edge), boss A31 central authorities arrange puncture needle tubing 11 through hole are installed, the position at this installation through hole place is Paracentesis needle holder 13, the tail end of puncture needle tubing 11 is plugged on this Paracentesis needle holder 13 in the mode parallel with syringe 3 centers, the needle point of this needle tubing and the major part of needle tubing are all exposed outside syringe 3 and are passed batching pig 83, by catheter block 82 inner chambers, pass conduit 81, needle point exposes conduit 81 tips.Syringe 3 inside have an annular seal space 32 and a cylindrical cavity 33, and wherein annular seal space 32 is positioned at the syringe front end, and the tube core of puncture needle tubing 11 is communicated with sealing chamber 32.Blood sampling needle stand 14 is a kind of uncovered groove member, the one side is uncovered groove and pastes tactile with syringe 3 front bulkhead inner seals, formed cavity is annular seal space 32, its another sidewall is capsule walls, the capsule walls rear side has a small boss B131, blood-collecting needle tube 12 front ends are fixed on this boss B131, rear end and needle tubing major part extend back and are plugged in the pipe close of blood sample collecting pipe 2, the tube core of blood-collecting needle tube 12 is communicated with sealing chamber 32, and blood-collecting needle tube 12 is coaxial with cylindrical cavity 33.Blood taking needle 12 is coated with blood sampling sealing shroud 15, and blood sample collecting pipe pipe close center is provided with the core hole that extends axially to sealant 21, and this core hole internal diameter is slightly larger than blood sampling sealing shroud 15 external diameters.Like this, when blood-collecting needle tube 12 bands penetrate pipe close with blood sampling sealing shroud 15 along this core hole, blood sampling sealing shroud 15 is subject to axial compression compression radial distorted dilatating and deformable, core hole inner hole wall extrusion friction therewith just in time, and the more unlikely blood-collecting needle tube 12 that allows is deviate from blood sample collecting pipe pipe close.Cylindrical cavity 33 is positioned at rear and its rear end of annular seal space 32 and opens, blood sample collecting pipe 2 pipe closes at front sleeve in this cylindrical cavity 33, the length of cylindrical cavity 32 is less than the length of blood sample collecting pipe 2, and the afterbody that is nested with the blood sample collecting pipe 2 in cylindrical cavity 32 exposes outside cylindrical cavity.Blood sample collecting pipe pipe close is comprised of seal rubber plug 22 and over cap 23; seal rubber plug 22 cover plugs are in the collecting pipe tube chamber; over cap 23 capping plugs are on the collecting pipe mouth of pipe and seal rubber plug; blood sample collecting pipe 2 pipe close aft bulkheads have a sealant 21 that can be pierced through by blood-collecting needle tube 12 rear ends; sealant thickness is 1.5MM; the cylindrical cavity 33 of blood sample collecting pipe 2 front end faces has for piercing through the accommodating space of the front blood sample collecting pipe that pushes away of this sealant 21 2; cylindrical cavity 33 inwalls are along circumferentially being symmetrically arranged with two structures that touch with blood sample collecting pipe 2 over caps 23 adaptive place elastic cards; when the two is in the tactile state of card, before blood-collecting needle tube 12 rear ends just are in sealant to be pierced through.Fig. 4, shown in Figure 5 just be this state.It is a kind of short arc convex clamping point 38 that this elastic card touches structure, and this short arc convex clamping point 38 and over cap 23 are made by elastomeric material.Puncture needle tubing tube core, annular seal space, blood-collecting needle tube tube core and be pierced sealant after blood sample collecting pipe tube chamber form a kind of blood channel.

With reference to Fig. 3, syringe 3 with the suitable position of blood sample collecting pipe over cap 23 on axially be provided with a kind of rectangular groove as operation window 35 along syringe, this operation window 35 has two, relatively is distributed in the both sides of syringe 3.Short arc convex clamping point 38 therewith operation window 35 dislocation 90 degree distributes.

With reference to Fig. 6, Fig. 7, Fig. 8, be provided with a kind of tactile platform 34 on close syringe 3 those side outer peripheral faces of puncture needle tubing 11, these tactile platform 34 bottom surfaces are provided with a kind of soft deposited wing 4, these soft deposited wing 4 both sides have the span, apply wing bottom surface and be arcs of recesses a kind of and that the human body ancon is suitable, apply the wing 4 bottom surfaces the viscous adhesive point is set.

During actual the use, control syringe 3 procapsids by finger, needle tip thrust in the sufferer blood vessel, observe blood back from annular seal space 32 after, in blood vessel, send into puncture needle tubing 11 first, then descend the pressure dressing wing 4, cling on arm in order to apply the wing 4 gluings point, need not hand steeredly hold blood sampling system, puncture needle tubing 11 can not skid off blood vessel yet, like this, the medical worker can vacate both hands, has made things convenient for the medical worker to carry out other operation.See after the blood back, syringe 3 front portions are held up in a have gentle hands, the another hands touches collecting pipe from blood sample collecting pipe 2 rearward end, allow the blood taking needle spine break back-end sealing layer 21, the blood sampling needle point passes seal rubber plug 22, because suction function in the collecting pipe, blood flows in the collecting pipe fast to the sample amount that requires, if also need carry out the multitube blood collection, a hands pinches syringe 3 front portions and fixes blood sampling system, the another hands is by symmetrical microscler operation window 35 on the syringe, pinch collecting pipe protective cover 23, pull out collecting pipe 2, until blood-collecting needle tube 12 is deviate from collecting pipe seal rubber plug 22 fully, take advantage of a situation and pull out collecting pipe, change again the new collecting pipe of insertion and take a blood sample.After blood sampling finishes, withdraw from first human body end puncture needle tubing 11, withdraw from again blood sample collecting pipe 2, because blood-collecting needle tube 12 outer blood sampling sealing shrouds 15 are longer than blood-collecting needle tube 12, can not hurt the people so can guarantee blood-collecting needle tube 12 needle points, and in repeatedly changing blood sample collecting pipe 2 processes, blood sampling sealing shroud 15 also plays the insertion guide effect, and the blood sampling needle point can not sting the people, so play safety protection function, sealing shroud 15 resiliences of taking a blood sample simultaneously are airtight, seal the blood taking needle tube head, avoided blood contamination.After the puncture needle tubing is withdrawn from, and in the catheter retaining blood vessel, open the transfusion device flow valve and just can carry out the normal infusion treatment.

It is same as the prior art that present embodiment is not stated part.

Embodiment two:

With reference to Fig. 9, Figure 10, Figure 11, have the remaining needle of syringe-type vacuum blood collector, comprise conduit tube component and needle tubing assembly.Conduit tube component comprises conduit 81, catheter block 82, batching pig 83, extension tube 84 and Connection Block 85 etc.The needle tubing assembly comprises vascular puncture needle tubing 11, blood-collecting needle tube 12, blood sample collecting pipe 2 and syringe 3, syringe is a hollow barrel-type housing, made by medical transparent material, syringe drive end bearing bracket 6 is the wedge shape of stretching under a kind of upper contracting, the upper contracting end on this wedge shape inclined-plane intersects with the outer peripheral face of syringe, the lower extending end on this wedge shape inclined-plane forms a kind of small boss A31 in the position near syringe outer peripheral face (namely near the housing inside edge), boss A31 central authorities arrange puncture needle tubing 11 through hole are installed, puncture needle tubing 11 passes installation through hole and this installation through hole rear, the Paracentesis needle holder 13 of syringe 3 inner chamber leading sections is affixed, puncture needle tubing 11 but decentered distribution parallel with syringe 3 centers, the needle point of this needle tubing and the major part of needle tubing are all exposed outside syringe 3 and are passed batching pig 83, by catheter block 82 inner chambers, pass conduit 81, needle point exposes conduit 81 tips.Syringe 3 inside have an annular seal space 32 and a cylindrical cavity 33, and wherein annular seal space 32 is positioned at the syringe front end, and the tube core of puncture needle tubing 11 is communicated with sealing chamber 32.Paracentesis needle holder 13 relative syringes 3 are individual members, made by medical transparent material, be placed in the leading section of syringe 3 inner chambers, its inner closed cavity is annular seal space 32, the rear side of annular seal space 32 rear walls has a small boss B131, and blood-collecting needle tube 12 front ends are fixed on this boss B131, and rear end and needle tubing major part extend back and be plugged in the pipe close of blood sample collecting pipe 2, the tube core of blood-collecting needle tube 12 is communicated with sealing chamber 32, and blood-collecting needle tube 12 is coaxial with cylindrical cavity 33.Blood taking needle 12 is coated with blood sampling sealing shroud 15, and blood sample collecting pipe pipe close center is provided with the core hole that extends axially to sealant 21, and this core hole internal diameter is slightly larger than blood sampling sealing shroud 15 external diameters.Like this, when blood-collecting needle tube 12 bands penetrate pipe close with blood sampling sealing shroud 15 along this core hole, blood sampling sealing shroud 15 is subject to axial compression compression radial distorted dilatating and deformable, core hole inner hole wall extrusion friction therewith just in time, and the more unlikely blood-collecting needle tube 12 that allows is deviate from blood sample collecting pipe pipe close.Cylindrical cavity 33 is positioned at rear and its rear end of annular seal space 32 and opens, blood sample collecting pipe 2 pipe closes at front sleeve in this cylindrical cavity 33, the length of cylindrical cavity 32 is less than the length of blood sample collecting pipe 2, and the afterbody that is nested with the blood sample collecting pipe 2 in cylindrical cavity 32 exposes outside cylindrical cavity.Blood sample collecting pipe pipe close is comprised of seal rubber plug 22 and over cap 23; seal rubber plug 22 cover plugs are in the collecting pipe tube chamber; over cap 23 capping plugs are on the collecting pipe mouth of pipe and seal rubber plug; blood sample collecting pipe 2 pipe close aft bulkheads have a sealant 21 that can be pierced through by blood-collecting needle tube 12 rear ends; sealant thickness is 1.5MM; the cylindrical cavity 33 of blood sample collecting pipe 2 front end faces has for piercing through the accommodating space of the front blood sample collecting pipe that pushes away of this sealant 21 2; cylindrical cavity 33 inwalls are along circumferentially being symmetrically arranged with two structures that touch with blood sample collecting pipe 2 over caps 23 adaptive place elastic cards; when the two is in the tactile state of card, before blood-collecting needle tube 12 rear ends just are in sealant to be pierced through.Shown in Figure 10, Figure 115 just is this state.It is a kind of short arc convex clamping point 38 that this elastic card touches structure, and this short arc convex clamping point 38 and over cap 23 are made by elastomeric material.Puncture needle tubing tube core, annular seal space, blood-collecting needle tube tube core and be pierced sealant after blood sample collecting pipe tube chamber form a kind of blood channel.

With reference to Fig. 9, Figure 12, extend axially the sliding tray 36 of a kind of tail end sealing on syringe 3 sidewalls, Paracentesis needle holder pushes away that handle 132 is prominent to be passed this sliding tray 36 and be exposed at outside the syringe 3.This sliding tray 36 extends to syringe 3 rear portions from syringe 3 front portions always, and the over cap 23 that is nested with the blood sample collecting pipe 2 in cylindrical cavity 33 is arranged in the length of interval of this sliding tray 36, and therefore, this sliding tray 36 is again operation window 35 simultaneously.The axial length of syringe 3 inner chambers is greater than the length of exposing the puncture needle tubing 11 outside syringe 3, and puncture needle tubing 11, Paracentesis needle holder 13, blood-collecting needle tube 12 and even blood sample collecting pipe 2 form the slide unit that a kind of relatively syringe 3 retreats slip.

With reference to Figure 12, when blood sampling finishes, can be along these sliding tray 36 pusher Paracentesis needle holders 13 and puncture needle tubing 11, until puncture needle tubing 11 submerges fully in syringe 3 inner chambers.Can extract backward blood sample collecting pipe 2 this moment, and itself and syringe 3 are broken away from.

With reference to Figure 12, Figure 13, Figure 14, also include a kind of non-return device, this non-return device is the symmetrical closed tongue piece 5 of a kind of elasticity, is installed in syringe 3 inner chambers in Paracentesis needle holder 13 the place aheads, and puncture needle tubing 11 tail ends wore the closed joint portion of this closed tongue piece 5 and were fixed on the Paracentesis needle holder 13.

Like this, after the puncture needle tubing was removed, closed tongue piece 5 elastic resets were blocked former puncture needle tubing 11 outlets.Stop, retreat the slide unit that puts in place can not before push away.Thereby both having guaranteed that the puncture needle tubing 11 that retreats can not passed out again hurts sb.'s feelings, and also can impel the disposable use of this syringe-type vacuum blood collector described in the utility model, can not reused by the lawless person.

With reference to Figure 10, Figure 11, be provided with a kind of soft deposited wing 4 on close syringe 3 those side outer peripheral faces of puncture needle tubing 11, these soft deposited wing 4 both sides have the span, apply wing bottom surface and are the suitable arcs of recesses of a kind of and human body ancon, apply the wing 4 bottom surfaces the viscous adhesive point is set.

It is identical with embodiment one that present embodiment is not stated part.

Most preferred embodiment:

With reference to Figure 15, Figure 16, have the remaining needle of syringe-type vacuum blood collector, comprise conduit tube component and needle tubing assembly.Conduit tube component comprises conduit 81, catheter block 82, batching pig 83, extension tube 84 and Connection Block 85 etc.The needle tubing assembly is a kind of syringe-type vacuum blood collector, comprises vascular puncture needle tubing 11, blood-collecting needle tube 12, blood sample collecting pipe 2, syringe 3, the deposited wing 4, closed tongue piece 5, drive end bearing bracket 6 and the telescopic protective cover that is fitted together by fixed cover 71 and slip cap 72 slip caps.Syringe 3 is hollow cylindrical barrel-type casings, is made by medical transparent material.Drive end bearing bracket 6 is arranged in syringe 3 the place aheads and affixed with the fixed cover 71 of telescopic protective cover; the big or small smooth transition such as drive end bearing bracket 6 rear end outer peripheral faces and syringe 3 outer peripheral faces; drive end bearing bracket 6 leading sections are the wedge shape of stretching under a kind of upper contracting; the upper contracting end on this wedge shape inclined-plane intersects with the outer peripheral face of drive end bearing bracket 6 rear ends; the lower extending end on this wedge shape inclined-plane forms a kind of small boss A31 in the position near drive end bearing bracket 6 outer peripheral faces (namely near the housing inside edge); boss A31 central authorities arrange puncture needle tubing 11 through hole are installed; puncture needle tubing 11 passes installs through hole and along slip cap 72 lumen shaft to walking and finally be fixed on the Paracentesis needle holder, Paracentesis needle holder 13 with syringe 3 leading sections affixed or with syringe 3 Construction integrations.This position also is positioned at slip cap 72 tail ends.Puncture needle tubing 11 but decentered distribution parallel with syringe 3 centers, the needle point of this needle tubing and the major part of needle tubing are all exposed outside syringe 3 and are passed batching pig 83, by catheter block 82 inner chambers, pass conduit 81, and needle point exposes conduit 81 tips.Syringe 3 inside have a telescopic protective cover chamber 37, an annular seal space 32 and a cylindrical cavity 33; syringe 3 inner chambers middle part has a partition; this partition the place ahead is telescopic protective cover chamber 37, and this partition rear is annular seal space 32 and cylindrical cavity 33, and annular seal space 32 is positioned at cylindrical cavity 33 the place aheads.The tube core of puncture needle tubing 11 is communicated with sealing chamber 32.Paracentesis needle holder 13 1 sides are uncovered groove and tactile with this partition rear side sealing paste of syringe 3 inner chambers, formed cavity is annular seal space 32, another sidewall in sealing chamber 32 is the annular seal space rear wall, the rear side of annular seal space 32 rear walls has a small boss B131, blood-collecting needle tube 12 front ends are fixed on this boss B131, rear end and needle tubing major part extend back and are plugged in the pipe close of blood sample collecting pipe 2, the tube core of blood-collecting needle tube 12 is communicated with sealing chamber 32, and blood-collecting needle tube 12 is coaxial with cylindrical cavity 33.Blood taking needle 12 is coated with blood sampling sealing shroud 15, and blood sample collecting pipe pipe close center is provided with the core hole that extends axially to sealant 21, and this core hole internal diameter is slightly larger than blood sampling sealing shroud 15 external diameters.Like this, when blood-collecting needle tube 12 bands penetrate pipe close with blood sampling sealing shroud 15 along this core hole, blood sampling sealing shroud 15 is subject to axial compression compression radial distorted dilatating and deformable, core hole inner hole wall extrusion friction therewith just in time, and the more unlikely blood-collecting needle tube 12 that allows is deviate from blood sample collecting pipe pipe close.Cylindrical cavity 33 is positioned at rear and its rear end of annular seal space 32 and opens, blood sample collecting pipe 2 pipe closes at front screw-casing in this cylindrical cavity 33, the length of cylindrical cavity 32 is less than the length of blood sample collecting pipe 2, and the afterbody that is nested with the blood sample collecting pipe 2 in cylindrical cavity 32 exposes outside cylindrical cavity.Blood sample collecting pipe pipe close is comprised of seal rubber plug 22 and over cap 23; seal rubber plug 22 cover plugs are in the collecting pipe tube chamber; over cap 23 capping plugs are on the collecting pipe mouth of pipe and seal rubber plug; blood sample collecting pipe 2 pipe close aft bulkheads have a sealant 21 that can be pierced through by blood-collecting needle tube 12 rear ends; sealant thickness is 1.5MM, and the cylindrical cavity 33 of blood sample collecting pipe 2 front end faces has for piercing through the accommodating space of the front blood sample collecting pipe that pushes away of this sealant 21 2.Cylindrical cavity 33 inwalls are along circumferentially being symmetrically arranged with the structure that touches with blood sample collecting pipe 2 over caps 23 adaptive place elastic cards, when the two is in the tactile state of card, before blood-collecting needle tube 12 rear ends just are in sealant to be pierced through.It is a kind of short arc convex clamping point 38 that this elastic card touches structure, and this short arc convex clamping point 38 and over cap 23 are made by elastomeric material.Puncture needle tubing tube core, annular seal space, blood-collecting needle tube tube core and be pierced sealant after blood sample collecting pipe tube chamber form a kind of blood channel.

With reference to Figure 19, slip cap 72, syringe 3, puncture needle tubing 11, Paracentesis needle holder 13 and blood-collecting needle tube 12 and even blood sample collecting pipe 2 form the slide unit that a kind of relatively fixed cover 71 slides.When blood sampling finishes, but pusher syringe 3, and relative fixed cover 71 slides backward slip cap 72 along with retreating of syringe 3, also also gradually is retracted in fixed cover 71 inner chambers along with the puncture needle tubing 11 of drawing back, until in fixed cover 71 inner chambers that submerge fully.Can extract backward blood sample collecting pipe 2 this moment, and itself and syringe 3 are broken away from.

With reference to Figure 17, Figure 18, also include a kind of non-return device, this non-return device is the symmetrical closed tongue piece 5 of a kind of elasticity, is installed in drive end bearing bracket 6 inner chambers at boss A31 rear, and puncture needle tubing 11 tail ends wore the closed joint portion of this closed tongue piece 5 and were fixed at last on the Paracentesis needle holder 13.

Like this, after the puncture needle tubing was removed, closed tongue piece 5 elastic resets were blocked former puncture needle tubing 11 outlets.Stop retreat the slide unit that puts in place can not before push away.Thereby both having guaranteed that the puncture needle tubing 11 that retreats can not passed out again hurts sb.'s feelings, and also can impel the disposable use of this syringe-type vacuum blood collector described in the utility model, can not reused by the lawless person.

With reference to Figure 15, Figure 16, be provided with a kind of soft deposited wing 4 on close syringe 3 those side outer peripheral faces of puncture needle tubing 11, these soft deposited wing 4 both sides have the span, apply wing bottom surface and are the suitable arcs of recesses of a kind of and human body ancon, apply the wing 4 bottom surfaces the viscous adhesive point is set.

It is identical with embodiment one that present embodiment is not stated part.

Claims (30)

1. the remaining needle that has the syringe-type vacuum blood collector, comprise conduit tube component and needle tubing assembly, conduit tube component comprises conduit, catheter block, batching pig, extension tube, Connection Block and closeouts etc., it is characterized in that: the needle tubing assembly is a kind of vacuum blood collector, comprise the vascular puncture needle tubing, blood-collecting needle tube, blood sample collecting pipe and syringe, the tail end of vascular puncture needle tubing is plugged on the Paracentesis needle holder of syringe front portion with the mode off-centre near the syringe outer peripheral face, the needle point of this needle tubing and the major part of needle tubing are all exposed outside syringe and are passed batching pig, by the catheter block inner chamber, pass conduit, needle point exposes catheter tip, syringe inside has an annular seal space and a cylindrical cavity, before wherein annular seal space is positioned at cylindrical cavity, the tube core of vascular puncture needle tubing is communicated with the sealing chamber, the front end of blood-collecting needle tube is installed with on the wall of sealing chamber, rear end and needle tubing major part extend back and are plugged in the pipe close of blood sample collecting pipe, the tube core of blood-collecting needle tube is communicated with the sealing chamber, cylindrical cavity is positioned at rear and its rear end of annular seal space and opens, blood sample collecting pipe pipe close is nested with in this cylindrical cavity in removable mode front, blood sample collecting pipe pipe close aft bulkhead has a sealant that can be pierced through by the blood-collecting needle tube rear end, the cylindrical cavity of blood sample collecting pipe front end face has for piercing through the front accommodating space of blood sample collecting pipe that pushes away of this sealant, vascular puncture needle tubing tube core, annular seal space, the blood-collecting needle tube tube core and be pierced sealant after blood sample collecting pipe tube chamber form a kind of blood channel.

2. the remaining needle with syringe-type vacuum blood collector according to claim 1 is characterized in that, arranges that near the syringe outer peripheral face vascular puncture needle tubing that also extends forward is parallel with the center of syringe.

3. the remaining needle with syringe-type vacuum blood collector according to claim 1 is characterized in that, the annular seal space of syringe front portion is a kind of blood back cavity, has the perspective section of observable blood back on the suitable position in syringe outer peripheral face and sealing chamber.

4. the remaining needle with syringe-type vacuum blood collector according to claim 1, it is characterized in that, the syringe leading section is the wedge shape of stretching under a kind of upper contracting, and the vascular puncture needle tubing is affixed at lower extending end head and the syringe of this wedge shape, and the perspective section of observable blood back is positioned on the inclined-plane of this wedge shape.

5. the remaining needle with syringe-type vacuum blood collector according to claim 4, it is characterized in that, the upper contracting end on this wedge shape inclined-plane intersects with the outer peripheral face of syringe, the lower extending end on this wedge shape inclined-plane forms a kind of small boss A in the position near the syringe outer peripheral face, and vascular puncture needle tubing tail end is affixed by this boss A and syringe.

6. the remaining needle with syringe-type vacuum blood collector according to claim 1 is characterized in that, has a small boss B on the annular seal space bonnet, and the blood-collecting needle tube front end is fixed on this boss B.

7. the remaining needle with syringe-type vacuum blood collector according to claim 1 is characterized in that, blood-collecting needle tube and syringe arranged concentric, and extend along the syringe center back.

8. the remaining needle with syringe-type vacuum blood collector according to claim 1, it is characterized in that, cylindrical cavity has front bulkhead, have the interval between sealing chamber bonnet and the cylindrical cavity front bulkhead, extend back pass this cylindrical cavity front bulkhead blood-collecting needle tube simultaneously bearing on this cylindrical cavity front bulkhead.

9. according to claim 1 or 7 described remaining needles with syringe-type vacuum blood collector, it is characterized in that, blood-collecting needle tube is coated with the blood sampling sealing shroud, blood sample collecting pipe pipe close center is provided with the core hole that extends axially to sealant, this core hole internal diameter is slightly larger than blood sampling sealing shroud external diameter, when the blood taking needle pipe racks penetrated pipe close with the blood sampling sealed tube along this core hole, the blood sampling sealing shroud was subject to axial compression compression radial distorted dilatating and deformable, therewith core hole inner hole wall extrusion friction.

10. the remaining needle with syringe-type vacuum blood collector according to claim 1 is characterized in that, blood sample collecting pipe pipe close sealant thickness is 3-0.5MM.

11. the remaining needle with syringe-type vacuum blood collector according to claim 10 is characterized in that, blood sample collecting pipe pipe close sealant thickness is 1.5-0.5MM.

12. the remaining needle with syringe-type vacuum blood collector according to claim 1, it is characterized in that, have the structure suitable with blood sample collecting pipe pipe close in the cylindrical cavity, this structure not only makes things convenient for packing into and taking out of blood sample collecting pipe, simultaneously again with the blood sample collecting pipe pipe close annexation of formation than consolidation that be connected.

13. the remaining needle with syringe-type vacuum blood collector according to claim 12 is characterized in that the blood sample collecting pipe is plugged in the cylindrical cavity, suitable structure is the structure that interference fits connects on a kind of size.

14. the remaining needle with syringe-type vacuum blood collector according to claim 12, it is characterized in that, the cylindrical cavity inwall is along circumferentially being symmetrically arranged with the structure that touches with the adaptive place of blood sample collecting pipe pipe close elastic card, when the two is in the tactile state of card, before the blood-collecting needle tube rear end just is in sealant to be pierced through, touch structure cylindrical cavity inwall and the urgent connection status of pipe close formation elasticity through elastic card thus, but this elasticity drag is less than the axial force that manually applies.

15. the remaining needle with syringe-type vacuum blood collector according to claim 14 is characterized in that, it can be a kind of short arc convex clamping point that this elastic card touches structure, and perhaps this short arc convex clamping point or blood sample collecting pipe pipe close are made by elastomeric material.

16. the remaining needle with syringe-type vacuum blood collector according to claim 15, it is characterized in that, this short arc convex clamping point is a kind of prominent protruding salient point on the cylindrical cavity inwall, and the low shallow and front and back side of thickness all has is convenient to the arc-shaped transition that pipe close is creeped and passed through.

17. the remaining needle with syringe-type vacuum blood collector according to claim 12, it is characterized in that, the structure that cylindrical cavity is interior and pipe close is suitable is a kind of a plurality of structure that inwalls circumferentially distribute or symmetrical elastic card touches along cylindrical cavity, another kind of suitable structure is to be produced on the L shaped groove on the pipe close outer peripheral face and to be produced on prominent salient point on the cylindrical cavity inwall, should vertically enter L shaped groove and can slide therein in the termination of section from the L shaped groove that is positioned at the pipe close front end face by prominent salient point, when cylindrical cavity inwall and pipe close elastic card touch, should prominent salient point have entered in vertical section in the L shaped groove but not yet arrived this vertically bottom of section, before this moment, the blood-collecting needle tube rear end just was in sealant to be pierced through, when sinciput blood sample collecting pipe to blood-collecting needle tube puncture through seal layer, should just arrive this vertically bottom of section by prominent salient point, rotate the blood sample collecting pipe this moment, and this prominent salient point enters the cross break section in the L shaped groove.

18. the remaining needle with syringe-type vacuum blood collector according to claim 12 is characterized in that the blood sample collecting pipe is threaded in the cylindrical cavity, suitable structure is a kind of structure that is threaded.

19. the remaining needle with syringe-type vacuum blood collector according to claim 1; it is characterized in that; blood sample collecting pipe pipe close is comprised of seal rubber plug and over cap, and fluid sealant plug sleeve plug is in the collecting pipe tube chamber, and the over cap capping plug is on the collecting pipe mouth of pipe and seal rubber plug.

20. the remaining needle with syringe-type vacuum blood collector according to claim 1 is characterized in that, the length of cylindrical cavity is less than the length of blood sample collecting pipe, and the afterbody that is nested with the blood sample collecting pipe in cylindrical cavity exposes outside cylindrical cavity.

21. the remaining needle with syringe-type vacuum blood collector according to claim 1, it is characterized in that, syringe with blood sample collecting pipe pipe close in be contained on the position suitable in the syringe and axially be provided with a kind of rectangular groove as operation window along syringe, this operation window has two, relatively is distributed in the both sides of syringe.

22. the remaining needle with syringe-type vacuum blood collector according to claim 1, it is characterized in that, Paracentesis needle holder is arranged in the syringe inner chamber of syringe front bulkhead inboard, the Paracentesis needle holder inner chamber is annular seal space, extend axially a kind of tail end on the barrel sidewall and be provided with the sliding tray that retreats obstacle, Paracentesis needle holder pushes away that handle is prominent to be passed this sliding tray and be exposed at outside the syringe, the axial length of syringe inner chamber is greater than the length of exposing the puncture needle tubing outside syringe, the puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube and even collecting pipe form the slide unit that a kind of relatively syringe retreats slip, along with retreating of the slide unit needle tubing that punctures retracts in the syringe inner chamber.

23. the remaining needle with syringe-type vacuum blood collector according to claim 1, it is characterized in that, Paracentesis needle holder is arranged in the syringe inner chamber of syringe front bulkhead inboard, the Paracentesis needle holder inner chamber is annular seal space, extend axially a kind of tail end on the barrel sidewall and be provided with the sliding tray that retreats obstacle, Paracentesis needle holder pushes away that handle is prominent to be passed this sliding tray and be exposed at outside the syringe, the axial length of syringe inner chamber is greater than the length of exposing the puncture needle tubing outside syringe, the puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube and even collecting pipe form the slide unit that a kind of relatively syringe retreats slip, along with slide unit retreat the puncture needle tubing retract in the syringe inner chamber, also include a kind of non-return device, this non-return device is installed between slide unit and the syringe, is retracted into slide unit in the syringe inner chamber to the puncture needle tubing and pushes away before reverse non-return device is therewith stoped contact if retreat.

24. the remaining needle with syringe-type vacuum blood collector according to claim 23, it is characterized in that, this non-return device is the symmetrical closed tongue piece of a kind of elasticity, be installed in the syringe inner chamber in Paracentesis needle holder the place ahead, puncture needle tubing tail end wore the closed joint portion of this closed tongue piece and was fixed on the Paracentesis needle holder, after the puncture needle tubing was removed, the tongue piece elastic reset was blocked former puncture needle tubing outlet.

25. the remaining needle with syringe-type vacuum blood collector according to claim 24, it is characterized in that, this non-return device is comprised of Elastic buckle and pit, Elastic buckle is positioned on the syringe, pit is positioned on the slide unit, retreat the proper and Elastic buckle clamping of its pit of slide unit that puts in place, thereby push away before stoping the puncture needle tubing.

26. the remaining needle with syringe-type vacuum blood collector according to claim 25, it is characterized in that, this Elastic buckle is comprised of the buckle on elastic suspended tongue and outstanding tongue top, close syringe sliding tray tail end is emptied along the interval parallel with sliding tray and is allowed this empty at sliding tray tail end and sliding tray " U " shape and even wears, these " U " shape central authorities namely form an elastic suspended tongue, buckle is arranged in this elastic suspended tongue top and prominent protruding in sliding tray, pit is positioned at pushing away on the handle of Paracentesis needle holder, retreat the Paracentesis needle holder that puts in place along sliding tray and push away handle, the just therewith buckle clamping of its pit.

27. the remaining needle with syringe-type vacuum blood collector according to claim 1; it is characterized in that; also include a kind of telescopic protective cover that is fitted together by fixed cover and slip cap slip cap; syringe and slip cap tail end are affixed; Paracentesis needle holder is positioned at slip cap tail end and affixed with syringe; the Paracentesis needle holder inner chamber is annular seal space; the puncture needle tubing is along the slip cap lumen shaft to walking and finally being fixed on the Paracentesis needle holder; slip cap; syringe; the puncture needle tubing; Paracentesis needle holder and blood-collecting needle tube and even blood sample collecting pipe form the slide unit that a kind of relatively fixed cover slides, along with the puncture needle tubing that retreats of slide unit retracts in the fixed cover inner chamber.

28. the remaining needle with syringe-type vacuum blood collector according to claim 1; it is characterized in that; also include a kind of telescopic protective cover and a kind of non-return device that is fitted together by fixed cover and slip cap slip cap; syringe and slip cap tail end are affixed; Paracentesis needle holder is positioned at slip cap tail end and affixed with syringe; the Paracentesis needle holder inner chamber is annular seal space; the puncture needle tubing is along the slip cap lumen shaft to walking and finally being fixed on the Paracentesis needle holder; slip cap; syringe; the puncture needle tubing; Paracentesis needle holder and blood-collecting needle tube and even blood sample collecting pipe form the slide unit that a kind of relatively fixed cover slides; along with slide unit retreat the puncture needle tubing retract in the fixed cover inner chamber; this non-return device is installed between slide unit and the fixed cover, is retracted into slide unit in the fixed cover inner chamber to the puncture needle tubing and pushes away before reverse non-return device is therewith stoped contact if retreat.

29. the remaining needle with syringe-type vacuum blood collector according to claim 28, it is characterized in that, this non-return device is the symmetrical closed tongue piece of a kind of elasticity, be installed in the inner chamber of Paracentesis needle holder the place ahead, fixed cover front bulkhead, puncture needle tubing tail end wore the closed joint portion of this closed tongue piece and was fixed on the Paracentesis needle holder, after the puncture needle tubing was removed, the tongue piece elastic reset was blocked former puncture needle tubing outlet.

30. the remaining needle with syringe-type vacuum blood collector according to claim 1 is characterized in that, also includes a kind of drive end bearing bracket, this drive end bearing bracket is positioned at syringe the place ahead and affixed with fixed cover, drive end bearing bracket outer peripheral face and syringe outer peripheral face smooth transition.

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