CN104470438A

CN104470438A - Syringe type vacuum blood collector

Info

Publication number: CN104470438A
Application number: CN201280074567.2A
Authority: CN
Inventors: 张建铭
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-08-02
Filing date: 2012-08-02
Publication date: 2015-03-25
Anticipated expiration: 2032-08-02
Also published as: WO2014019201A1; CN104470438B

Abstract

A syringe type vacuum blood collector comprises a syringe (3) and a blood sample collection pipe (2). The syringe (3) has a seal cavity (32) and a cylindrical cavity (33) inside, and the seal cavity (32) communicates with a vascular puncture needle tube (11) and a blood collection needle tube (12), so as to be used as a blood return cavity to help a user observe the blood return. The blood sample collection pipe (2) is sleeved in the cylindrical cavity (33). By pushing the blood sample collection pipe (2) forward relative to the syringe (3), the blood collection needle tube (12) punctures a seal layer (21) formed by a rear end wall of a pipe plug of the blood sample collection pipe (2), so as to collect blood. The blood collector makes the vascular puncture needle tube (11), the blood collection needle tube (12), and the blood sample collection pipe (2) integrated into a whole and combined to form a traditional syringe structure, thereby simplifying the structure and facilitating the control operation. The operation process of the blood collector is very similar to a traditional syringe operation, and can reduce the work load and psychological burden of a medical worker; and even in the case that the limbs motion range of a patient is large, misoperations are unlikely to occur, thereby improving the safety and success degree of operations. The blood collection needle further comprises a safe structure; therefore, it is ensured that a regressed puncture needle tube is not pushed out to hurt a person, and that the blood collector is not used again.

Description

Syringe-type vacuum blood collector

Technical field

The present invention relates to vacuum blood collection apparatus, particularly a kind of syringe-type vacuum blood collector outside a kind of human body in clinical treatment.

Background technology

A kind of vacuum blood collection pipe device of the prior art is as shown in Fig. 1, Fig. 2, including blood taking needle 1 and blood sample collection pipe 2, blood taking needle 1 one end is vascular puncture needle tubing 11, and the other end is to carry gum cover blood-collecting needle tube 12, and centre passes through PVC hose connectors 16 Connection.The device first pulls out protective case on the needle tubing of two, vascular puncture needle tubing 11 is pierced into sufferer arm vein in blood sampling, waits blood to enter in blood sampling conduit, medical worker pushes down the vascular puncture needle tubing 11 with little finger immediately Needle handle, to prevent puncture needle tubing come off；Because the seal rubber plug of blood sample collection pipe 2 is very thick, the pinpoint inclined plane angle of blood-collecting needle tube 12 is big, and needle point is blunt, adds blood-collecting needle tube 12 Sealed rubber pipe elastic force when being compressed axially is very big, therefore needs both hands that blood-collecting needle tube 12 could be pierced into blood sample collection pipe, and operation is quite inconvenient.Due to blood sample collection pipe 2 It is inside negative pressure, the speed that blood is flowed into the collecting pipe.It is to be collected to required sample amount, if multitube blood sample need to be gathered, must bimanualness blood-collecting needle tube 12 could be extracted from collecting pipe 2.Now blood-collecting needle tube 12 Outer soft rubber sleeve restores, and encases blood-collecting needle tube, prevents blood outflow pollution environment, the intubation before then repeating in conduit；If need not draw blood again, puncture needle tubing 11 on human body must be first extracted , then needle tip shield is put, then pull out blood-collecting needle tube 12 on collecting pipe 2.This vacuum blood sampler is due to blood taking needle 1 and the split of collecting pipe 2 construction as can be seen here, and blood collection procedure need to care for hose connector 16 simultaneously Two needle tubing, cause complex operation cumbersome, multiple operating procedures even need both hands and also need to impose certain and just right power that the extraction and insertion of needle tubing could be completed, and the needle tubing to other end now can not be just cared for, so involving again needs the cooperating of more than one medical personnel.The presence of the cumbersome operating procedure of this complexity and two needle tubing, Medical personnel's workload and psychological burden are virtually added, under the big scene of limb activity amplitude, maloperation is easily produced suffering from unconsciousness, restless, disoperative patient and patient infant.

The content of the invention

It is an object of the invention to overcome weak point of the prior art, and provide a kind of structure simplification, easy syringe-type vacuum blood collector simple to operate.

The purpose of the present invention is realized by following approach.

Syringe-type vacuum blood collector, including vascular puncture needle tubing, blood-collecting needle tube and blood sample collection pipe, its composition is characterized by, also include a kind of syringe, the tail end of vascular puncture needle tubing bias in the way of close to syringe outer peripheral face is plugged on the Paracentesis needle holder of syringe leading section, the needle point of the needle tubing and the major part of needle tubing are exposed outside syringe, there is an annular seal space and a cylindrical cavity inside syringe, wherein annular seal space is located at before cylindrical cavity, the tube core of vascular puncture needle tubing is connected with the annular seal space, the front end of blood-collecting needle tube is installed with the capsule walls, rear end and needle tubing largely extend back and are plugged in the pipe close of blood sample collection pipe, the tube core of blood-collecting needle tube is connected with the annular seal space, the rear and its rear end that cylindrical cavity is located at annular seal space are opened, blood sample collection pipe pipe close is nested with the cylindrical cavity preceding in removable mode, blood sample collection pipe pipe close aft bulkhead has a sealant that can be pierced through by blood-collecting needle tube rear end , There is the cylindrical cavity of blood sample collection pipe front end face the blood sample collection pipe tube chamber after the space that the preceding blood sample collection tube capacity pushed away is put for this sealant of puncture, vascular puncture needle tubing tube core, annular seal space, blood-collecting needle tube tube core and pierced sealant to constitute a kind of blood channel.

So, with syringe rigid attachment vascular puncture needle tubing, blood-collecting needle tube and blood sample collection pipe, three not only Construction integration but also a kind of traditional needle cylinder structure of composition are made, structure simplifies, and holding is easy to operate, and operating process is extremely similar to the operation of conventional syringes.

During blood sampling, hold syringe vascular puncture needle tubing is pierced into sufferer arm vein, when seeing blood back, handle syringe on the other hand, another hand or same finger sinciput blood sample collection pipe another on the other hand, blood-collecting needle tube rear end is set to pierce through the sealant of blood sample collection pipe pipe close, due to the negative pressure of blood sample collection pipe tube chamber, the speed that blood is flowed into the collecting pipe.The sample amount to be collected needed for, if multitube blood sample need to be gathered, only one hand is needed to extract collecting pipe from cylindrical cavity, now the outer blood sampling sealing shroud made by soft rubber sleeve of blood-collecting needle tube restores, encase blood-collecting needle tube, blood outflow pollution environment in conduit is prevented, new blood sample collection pipe is then further taken out；If need not draw blood again, it only need to first extract and needle tubing is punctured on human body, put needle tip shield, then remove collecting pipe.

The purpose of the present invention can also be realized by following approach.

The vascular puncture needle tubing and the center parallel of syringe arranged and extended forward close to syringe outer peripheral face.

The anterior annular seal space of syringe is the perspective portion on a kind of blood back cavity, the position that syringe outer peripheral face is adapted with the annular seal space with observable blood back.

Syringe leading section is in the downwardly extending wedge shape that contracted in one kind, and vascular puncture needle tubing is affixed in the wedge-shaped lower extending end head and syringe, and the perspective portion of observable blood back is located on the wedge-shaped inclined-plane.

The upper contracting end of the tapered ramp and the outer peripheral face of syringe intersect, and the lower extending end of the tapered ramp is forming a kind of small boss A close to the position of syringe outer peripheral face , vascular puncture needle tubing tail end is affixed by this boss A and syringe.

So, the tapered ramp faces the operator for bending to be operated, and is easy to observation.

The perspective portion can use transparent material to be made.

Covered after annular seal space with a small boss B, the fixation of blood-collecting needle tube front end is on this boss B.

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

Cylindrical cavity has front bulkhead, has interval between the annular seal space bonnet and cylindrical cavity front bulkhead, extends rearwardly through the blood-collecting needle tube of this cylindrical cavity front bulkhead while bearing is on the cylindrical cavity front bulkhead.

So, blood-collecting needle tube possesses preferable support connection rigidity.

Blood-collecting needle tube is coated with blood sampling sealing shroud, and blood sample collection pipe pipe close is provided centrally with axially extending to the core bore of sealant, and this core bore internal diameter is more slightly larger than blood sampling sealing shroud external diameter.

So, blood-collecting needle tube band with blood sampling seal pipe along this core bore penetrate pipe close when, blood sampling sealing shroud by axial compression compress radial distorted dilatating and deformable, just with this core bore inner hole wall extrusion friction, will not more allow blood-collecting needle tube deviate from blood sample collection pipe pipe close.

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

So blood-collecting needle tube can easily wear out sealant.

There is the construction being adapted with blood sample collection pipe pipe close, this constructs the loading and taking-up for not only facilitating blood sample collection pipe, while the annexation to be formed compared with consolidation that is connected with blood sample collection pipe pipe close again in cylindrical cavity.

The further optimization of this construction can be so：Blood sample collection pipe is plugged in cylindrical cavity, and the construction being adapted is the construction that interference fits couple in a kind of size.

It may also is that：Cylindrical cavity inwall, which is circumferentially symmetrically arranged with, is adapted to elastic card tactile construction in place's with blood sample collection pipe pipe close, and when the two, which is in card, touches state, blood-collecting needle tube rear end is just in before sealant to be pierced through.

The blood sample collection pipe being so both conveniently inserted in cylindrical cavity will not fall off out when upright, and the insertion degree of the blood sample collection pipe from being given in sense of touch installed in cylindrical cavity, so that convenient install.

It can be a kind of short arc convex clamping point that this elastic card, which touches construction, or this short arc convex clamping point or blood sample collection pipe pipe close are made up of elastomeric material.

This elastic card, which touches construction, can cause the elastic urgent connection status of cylindrical cavity inwall and pipe close, but when applying axial force, blood sample collection pipe can still do with respect to cylindrical cavity and before push away or retreat freely.

This short arc convex clamping point is exactly a kind of convex salient point on cylindrical cavity inwall of dashing forward as its name suggests, and thickness is low shallow and there is arc-shaped transition front and rear side, in order to which creeping for pipe close is passed through.

Other adaptation connecting structure can also separately be increased on the basis of this elastic card touches construction to be used cooperatively to reach more preferable using effect, the following is using cooperatively that one of which optimizes：

The construction being adapted in cylindrical cavity with pipe close is a kind of tactile construction of the circumferentially distributed or symmetrical elastic card of a plurality of inwalls along cylindrical cavity, and another construction being adapted is the L being produced on pipe close outer peripheral face Shape groove and the prominent salient point being produced on cylindrical cavity inwall, the prominent salient point enter L from the termination of the L shape groove vertical sections positioned at pipe close front end face Shape groove can simultaneously be slided wherein, when cylindrical cavity inwall and tactile pipe close elastic card, and the prominent salient point has been enter into L Reach in vertical section in shape groove but not yet the bottom of the vertical section, now blood-collecting needle tube rear end is just in before sealant to be pierced through, after sinciput blood sample collection pipe to blood-collecting needle tube pierces through sealant, the prominent salient point just reaches the bottom of the vertical section, blood sample collection pipe is now rotated, the prominent salient point enters Cross break section in L shape grooves.

So, L In shape groove cross break section can be with locked blood sample collection pipe in the axial direction the free degree, make its with respect to syringe can neither before push away and can not retreat.

Can be so again：Blood sample collection pipe screw thread is connected in cylindrical cavity, and the construction being adapted is a kind of threaded connection configuration.

Blood sample collection pipe pipe close is made up of seal rubber plug and protection cap, and fluid sealant plug sleeve plug is in collecting pipe tube chamber, and protection cap lid plug is on the collecting pipe mouth of pipe and seal rubber plug.

The construction being adapted with cylindrical cavity is generally located in protection cap.

The length of cylindrical cavity is less than the length of blood sample collection pipe, and the afterbody for the blood sample collection pipe being nested with cylindrical cavity is exposed outside cylindrical cavity.

Syringe is having a kind of strip grooves as operation window with being contained in blood sample collection pipe pipe close on the position being adapted in syringe along syringe is axially arranged, and this operation window has two, and Relative distribution is in the both sides of syringe.

So blood back can be observed by this operation window, observe the state of blood volume in blood sample collection pipe, also the insert state of observable blood sample collection pipe and insertion degree, can also be when extracting blood sample collection pipe, blood sample collection pipe firmly first is exited backward through this operation window grip pipe close, so as to collect the disengaging of tube body and pipe close when preventing from exiting blood sample collection pipe.

A kind of tactile platform is provided with that side outer peripheral face of the close syringe of vascular puncture needle tubing, this touches platform bottom surface in a kind of planar shaped or in a kind of arcs of recesses being adapted with human body ancon.

This tactile platform facilitate syringe and human body by touching, the frictional force of increase syringe and human skin makes syringe be difficult slippage.

A kind of soft deposited wing is provided with that side outer peripheral face of the close syringe of vascular puncture needle tubing, this soft deposited wing is affixed with syringe, and both sides have the span, applies wing bottom surface in a kind of planar shaped or in a kind of arcs of recesses being adapted with human body ancon.

This deposited wing facilitate syringe and human body by touching, the frictional force of increase syringe and human skin makes syringe be difficult slippage.

Sticky glue point further can also be set in deposited wing bottom surface.

At the end of blood sampling, retracted to if being able to that needle tubing will be punctured in protective case inner chamber, you can prevent from puncturing needle tubing needle point and accidentally injure other people and cause the injury such as infection, so, the present invention can further deepen as a kind of safety-type syringe-type vacuum blood collector, and one way in which is：

Paracentesis needle holder is located in the syringe inner chamber on the inside of syringe front bulkhead, Paracentesis needle holder inner chamber is annular seal space, it is axially extending in barrel sidewall to there is a kind of tail end to be provided with the sliding groove for retreating obstacle, Paracentesis needle holder push handle is prominent to be passed this sliding groove and is exposed at outside syringe, the axial length of syringe inner chamber is more than the length of the exposed puncture needle tubing outside syringe, needle tubing, Paracentesis needle holder, blood-collecting needle tube or even a kind of slide unit that can be slided with respect to syringe retrogressing of collecting pipe composition are punctured, is retracted to as the retrogressing of slide unit punctures needle tubing in syringe inner chamber.

At the end of blood sampling, along this sliding groove pusher Paracentesis needle holder and needle tubing can be punctured, be submerged completely in syringe until puncturing needle tubing, now syringe is used as protective case again.Sliding groove tail end, which retreats obstacle, can prevent the Paracentesis needle holder and puncture needle tubing of recession from passing syringe.This obstacle that retreats can be that a kind of prominent convex stuck point or sliding groove tail end in sliding groove tail end is closed.

The further optimization of this mode is：

Also include a kind of non-return device, this non-return device is arranged between slide unit and syringe, if being pushed away before the retrogressing slide unit that extremely puncture needle tubing is retracted into syringe inner chamber is reverse will prevent to contact with this non-return device.

So, because of the prevention of non-return device, retreat slide unit in place can not before push away.Hurted sb.'s feelings so as to both ensure that the puncture needle tubing retreated will not be elapsed out again, this syringe-type vacuum blood collector of the present invention can also be promoted disposable.

It is common in the aciculiform medicine equipment of this non-return device in the prior art, mostly can be using in the present invention.The present invention provides the non-return device of two kinds of optimization herein：

The non-return device is that a kind of elastic symmetry is closed in tongue piece, the syringe inner chamber in front of Paracentesis needle holder, punctures needle tubing tail end and wore the closure joint portion of this closure tongue piece and be fixed on Paracentesis needle holder.

So, after puncture needle tubing is removed, tongue piece elastic reset blocks former puncture barrel outlet.

The non-return device is made up of Elastic buckle and pit, and Elastic buckle is located on syringe, and pit is located on slide unit, retreat slide unit its pit in place just with Elastic buckle clamping, so as to prevent to push away before puncturing needle tubing.

The Elastic buckle is made up of the buckle on elastic suspended tongue and outstanding tongue top, is emptied close to syringe sliding groove tail end along the interval parallel with sliding groove and is allowed this to empty and worn in sliding groove tail end and sliding groove ' U ' shape company, this ' U ' shape center i.e. one elastic suspended tongue of formation, buckle is positioned at this elastic suspended tongue top and dashes forward convex in sliding groove, and pit is located in the push handle of Paracentesis needle holder.

Retreat Paracentesis needle holder push handle in place along sliding groove, its pit just with this buckle clamping.

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

Also include a kind of telescopic protective cover being set in together by fixed cover and slip cap slip; syringe and slip cap tail end are affixed; Paracentesis needle holder is located at slip cap tail end and affixed with syringe; Paracentesis needle holder inner chamber is annular seal space; needle tubing is punctured axially to walk and be finally fixed on Paracentesis needle holder along slip cap inner chamber; slip cap, syringe, puncture needle tubing, Paracentesis needle holder and blood-collecting needle tube or even a kind of relative slide unit for being relatively fixed set slip of blood sample collection pipe composition, are retracted in fixed cover inner chamber with the retrogressing puncture needle tubing of slide unit.

At the end of blood sampling, can pusher syringe make puncture needle tubing retreat submerge in fixed cover inner chamber, now fixed cover be used as puncture needle tubing protective case.

The further optimization of this mode is：

Also include a kind of non-return device, this non-return device is arranged between slide unit and fixed cover, if being pushed away before the retrogressing slide unit that extremely puncture needle tubing is retracted into fixed cover inner chamber is reverse will prevent to contact with this non-return device.

It is common in the aciculiform medicine equipment of this non-return device in the prior art, mostly can be using in the present invention.The present invention provides a kind of non-return device of optimization herein：

The non-return device is a kind of elastic symmetry closure tongue piece, in front of Paracentesis needle holder, in the inner chamber of fixed cover front bulkhead, punctures needle tubing tail end and wore the closure joint portion of this closure tongue piece and be fixed on Paracentesis needle holder.

Also include a kind of drive end bearing bracket, this drive end bearing bracket is located at syringe front and affixed with fixed cover, and drive end bearing bracket outer peripheral face smoothly transits with syringe outer peripheral face.

In summary, the present invention has the following advantages that compared with prior art：Structure simplifies, and holding is easy to operate, and operating process is extremely similar to the operation of conventional syringes, reduces to greatest extent Medical personnel's workload and psychological burden, under the big scene of limb activity amplitude, do not allow to be also easy to produce maloperation, so as to improve the security and Degree of Success of operation even in suffering from unconsciousness, restless, disoperative patient and patient infant yet.And the further intervention of safe shape construction, Hurted sb.'s feelings so as to both ensure that the puncture needle tubing retreated will not be elapsed out again, the disposable of this syringe-type vacuum blood collector of the present invention can also be promoted.

Brief description of the drawings

Fig. 1 is a kind of vacuum blood collection pipe device blood sample collection pipe insert state schematic diagram in the prior art.

Fig. 2 is that a kind of vacuum blood collection pipe device blood sample collection pipe withdraws from view in the prior art.

Fig. 3 is the schematic appearance of the syringe-type vacuum blood collector of embodiment one of the present invention.

Fig. 4 is the structural representation sectional plan view of the syringe-type vacuum blood collector of the embodiment of the present invention one.

Fig. 5 is the structural representation cutaway top view of the syringe-type vacuum blood collector of the embodiment of the present invention one.

Fig. 6 is the syringe cylinder structure schematic sectional front view in the syringe-type vacuum blood collector of the embodiment of the present invention one.

Fig. 7 is the syringe cylinder structure schematic sectional left view in the syringe-type vacuum blood collector of the embodiment of the present invention one.

Fig. 8 is the syringe cylinder structure schematic isometric in the syringe-type vacuum blood collector of the embodiment of the present invention one.

Fig. 9 is the schematic appearance of the syringe-type vacuum blood collector of the embodiment of the present invention two.

Figure 10 is the structural representation sectional plan view of the syringe-type vacuum blood collector of the embodiment of the present invention two.

Figure 11 is the structural representation cutaway top view of the syringe-type vacuum blood collector of the embodiment of the present invention two.

Figure 12 is the schematic diagram of state after the blood sampling of the syringe-type vacuum blood collector of the embodiment of the present invention two.

Figure 13 is the syringe leading section structural representation sectional plan view in the syringe-type vacuum blood collector of the embodiment of the present invention two.

Figure 14 is the syringe leading section structural representation section view left view in the syringe-type vacuum blood collector of the embodiment of the present invention two.

Figure 15 is the structural representation sectional plan view of the syringe-type vacuum blood collector of the embodiment of the present invention three.

Figure 16 is the structural representation top view of the syringe-type vacuum blood collector of the embodiment of the present invention three.

Figure 17 is the drive end bearing bracket structural representation sectional plan view in the syringe-type vacuum blood collector of the embodiment of the present invention three.

Figure 18 is the drive end bearing bracket structural representation sectional plan view in the syringe-type vacuum blood collector of the embodiment of the present invention three.

Figure 19 is the schematic diagram of state after the blood sampling of the syringe-type vacuum blood collector of the embodiment of the present invention three.

More description in detail is carried out to the utility model below in conjunction with the accompanying drawings.

Label declaration：

1 blood taking needle 11 punctures the push handles 14 of 131 boss B of needle tubing 12 blood-collecting needle tube, 13 Paracentesis needle holder 132 The cylindrical cavity 34 of 32 annular seal spaces of blood sampling blood sampling sealing shroud 16 hose connector, 2 blood sample collection pipe, 21 sealant, 3 syringe, the 31 boss A of needle stand 15 33 touches the operation window of platform 35 The short arc convex clamping point 4 of 36 sliding groove, 37 telescopic protective cover chamber 38 applies the slip cap of 71 fixed cover of closure 6 drive end bearing bracket of tongue piece of the wing 5 72.

Embodiment

Embodiment one：

Reference picture 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, syringe-type vacuum blood collector, including vascular puncture needle tubing 11 , blood-collecting needle tube 12, blood sample collection pipe 2 and syringe 3 , syringe is a hollow barrel-type housing, is made up of medical transparent material, and syringe leading section intersects in the downwardly extending wedge shape that contracted in one kind, the upper contracting end of the tapered ramp and the outer peripheral face of syringe, and the lower extending end of the tapered ramp is close to syringe outer peripheral face（I.e. close to case inside edge）Position form a kind of small boss A31, boss A31 center set puncture the installation through-hole of needle tubing 11, the position where the installation through-hole is Paracentesis needle holder 13, puncture needle tubing 11 tail end with syringe 3 The mode of center parallel is plugged on the Paracentesis needle holder 13, and the needle point of the needle tubing and the major part of needle tubing are exposed outside syringe 3.The inside of syringe 3 has an annular seal space 32 and a cylindrical cavity 33, wherein annular seal space 32 are located at syringe front end, and the tube core for puncturing needle tubing 11 is connected with the annular seal space 32.Blood sampling needle stand 14 is a kind of open recesses component, its side in open recesses and with syringe 3 Front bulkhead inner seal patch is touched, and the cavity formed is annular seal space 32, and its opposite side wall is to have a small boss B131 on rear side of capsule walls, capsule walls, and the front end fixation of blood-collecting needle tube 12 is on this boss B 131, rear end and needle tubing are largely extended back and are plugged in the pipe close of blood sample collection pipe 2, and the tube core of blood-collecting needle tube 12 is connected with the annular seal space 32, blood-collecting needle tube 12 and cylindrical cavity 33 Coaxially.Blood-collecting needle tube 12 is coated with blood sampling sealing shroud 15, and blood sample collection pipe pipe close is provided centrally with axially extending to the core bore of sealant 21, and this core bore internal diameter is than blood sampling sealing shroud 15 External diameter is slightly larger.So, blood-collecting needle tube 12 with blood sampling sealing shroud 15 along this core bore penetrate pipe close when, take a blood sample sealing shroud 15 Radial distorted dilatating and deformable is compressed by axial compression, just with this core bore inner hole wall extrusion friction, will not more allow blood-collecting needle tube 12 to deviate from blood sample collection pipe pipe close.Cylindrical cavity 33 is located at annular seal space 32 Rear and its rear end open, the pipe close of blood sample collection pipe 2 is in preceding sleeve in the cylindrical cavity 33, and the length of cylindrical cavity 32 is less than the length of blood sample collection pipe 2, is nested with cylindrical cavity 32 In blood sample collection pipe 2 afterbody it is exposed outside cylindrical cavity.Blood sample collection pipe pipe close is made up of seal rubber plug 22 and protection cap 23, and 22 sets of plugs of seal rubber plug are in collecting pipe tube chamber, protection cap 23 Lid plug is on the collecting pipe mouth of pipe and seal rubber plug, and the pipe close aft bulkhead of blood sample collection pipe 2 has a sealant 21 that can be pierced through by the rear end of blood-collecting needle tube 12, and the thickness of sealant 21 is 1.5MM , the cylindrical cavity 33 of the front end face of blood sample collection pipe 2 is with the accommodating space of the preceding blood sample collection pipe 2 pushed away for this sealant 21 of puncture, cylindrical cavity 33 Inwall, which is circumferentially symmetrically arranged with, is adapted to elastic card tactile construction in place's with the protection cap 23 of blood sample collection pipe 2, when the two, which is in card, touches state, blood-collecting needle tube 12 Rear end is just in before sealant to be pierced through.It is a kind of short arc convex clamping point 38, this short arc convex clamping point 38 and protection cap 23 that this elastic card, which touches construction, It is made up of elastomeric material.Puncture the blood sample collection pipe tube chamber after needle tubing tube core, annular seal space, blood-collecting needle tube tube core and pierced sealant and constitute a kind of blood channel.

Reference picture 3, syringe 3 with blood sample collection protection of pipe lid 23 There are a kind of strip grooves as operation window 35 along syringe is axially arranged on the position being adapted, this operation window 35 has two, and Relative distribution is in the both sides of syringe 3.

Reference picture 5, punctures and is provided with a kind of tactile platform 34 on close syringe 3 that side outer peripheral face of needle tubing 11, this touches platform 34 Bottom surface is provided with a kind of soft deposited wing 4, and this soft deposited both sides of the wing 4 has the span, and it is in a kind of arcs of recesses being adapted with human body ancon to apply wing bottom surface, applies the bottom surface of the wing 4 and sets sticky glue point.

When actual use, the procapsid of syringe 3 is held by finger, needle tip is pierced into sufferer blood vessel, from annular seal space 32 It was observed that after blood back, first puncturing needle tubing 11 toward feeding in blood vessel, then descending the pressure dressing wing 4, clung to apply glue point on the wing 4 on arm, blood sampling system is held without hand steered, needle tubing 11 is punctured Also blood vessel will not be skidded off, so, medical worker can vacate both hands, facilitates medical worker and carry out other operations.See after blood back, a hand gently helps syringe 3 anterior, another hand is from blood sample collection pipe 2 Rearward end touches collecting pipe, allows blood taking needle spine to break back-end sealing layer 21, and blood sampling needle point passes seal rubber plug 22 , due to suction function in collecting pipe, blood is flowed rapidly into after desired sample amount in collecting pipe, if also needing to carry out multitube blood collection, a hand pinches the front portion of syringe 3 and fixes blood sampling system, and another hand passes through symmetrical elongated operation window on syringe 35, collecting pipe protective cover 23 is pinched, collecting pipe 2 is pulled out, until the completely out collecting pipe seal rubber plug 22 of blood-collecting needle tube 12 , pull-out collecting pipe of taking advantage of a situation, then change the new collecting pipe of insertion and taken a blood sample.After blood sampling terminates, the deposited wing 4 is dug in first doubling, is allowed glue point to depart from human body skin, is withdrawn from people's body end puncture needle pipe 11, then exit blood sample collection pipe 2 , because the outer blood sampling sealing shroud 15 of blood-collecting needle tube 12 is longer than blood-collecting needle tube 12, therefore it can guarantee that the needle point of blood-collecting needle tube 12 will not hurt people, and during blood sample collection pipe 2 is changed repeatedly, sealing shroud of taking a blood sample 15 also act as insertion guide effect, and blood sampling needle point will not pierce people, therefore play safety protection function, while the resilience of sealing shroud 15 of taking a blood sample is closed, seal blood taking needle tube head, it is to avoid blood pollution.

The not described part of the present embodiment is same as the prior art.

Embodiment two：

Reference picture 9, Figure 10, Figure 11, syringe-type vacuum blood collector, including vascular puncture needle tubing 11, blood-collecting needle tube 12 , blood sample collection pipe 2 and syringe 3 , syringe is a hollow barrel-type housing, is made up of medical transparent material, and syringe leading section intersects in the downwardly extending wedge shape that contracted in one kind, the upper contracting end of the tapered ramp and the outer peripheral face of syringe, and the lower extending end of the tapered ramp is close to syringe outer peripheral face（I.e. close to case inside edge）Position form a kind of small boss A31, boss A31 center, which are set, punctures the installation through-hole of needle tubing 11, punctures needle tubing 11 and passes through installation through-hole and the installation through-hole rear, the inner chamber leading section of syringe 3 Paracentesis needle holder 13 affixed, punctures needle tubing 11 with the center parallel of syringe 3 but decentered distribution, the needle point of the needle tubing and the major part of needle tubing are exposed outside syringe 3.The inside of syringe 3 has an annular seal space 32 and a cylindrical cavity 33, wherein annular seal space 32 are located at syringe front end, and the tube core for puncturing needle tubing 11 is connected with the annular seal space 32.Paracentesis needle holder 13 is an individual member with respect to syringe 3, is made up of medical transparent material, is placed in syringe 3 The leading section of inner chamber, its internal closed cavity is annular seal space 32, and the rear side of the rear wall of annular seal space 32 has a small boss B131, and the front end fixation of blood-collecting needle tube 12 is in this boss B131 On, rear end and needle tubing are largely extended back and are plugged in the pipe close of blood sample collection pipe 2, and the tube core of blood-collecting needle tube 12 is connected with the annular seal space 32, blood-collecting needle tube 12 and cylindrical cavity 33 Coaxially.Blood-collecting needle tube 12 is coated with blood sampling sealing shroud 15, and blood sample collection pipe pipe close is provided centrally with axially extending to the core bore of sealant 21, and this core bore internal diameter is than blood sampling sealing shroud 15 External diameter is slightly larger.So, blood-collecting needle tube 12 with blood sampling sealing shroud 15 along this core bore penetrate pipe close when, take a blood sample sealing shroud 15 Radial distorted dilatating and deformable is compressed by axial compression, just with this core bore inner hole wall extrusion friction, will not more allow blood-collecting needle tube 12 to deviate from blood sample collection pipe pipe close.Cylindrical cavity 33 is located at annular seal space 32 Rear and its rear end open, the pipe close of blood sample collection pipe 2 is in preceding sleeve in the cylindrical cavity 33, and the length of cylindrical cavity 32 is less than the length of blood sample collection pipe 2, is nested with cylindrical cavity 33 In blood sample collection pipe 2 afterbody it is exposed outside cylindrical cavity 33.The pipe close of blood sample collection pipe 2 is made up of seal rubber plug 22 and protection cap 23, seal rubber plug 22 Set plug is in collecting pipe tube chamber, and the lid plug of protection cap 23 is on the collecting pipe mouth of pipe and seal rubber plug, and the pipe close aft bulkhead of blood sample collection pipe 2 has a sealant 21 that can be pierced through by the rear end of blood-collecting needle tube 12, and sealant thickness is 1.5MM, the cylindrical cavity 33 of the front end face of blood sample collection pipe 2 has the accommodating space of the preceding blood sample collection pipe 2 pushed away, cylindrical cavity 33 for this sealant 21 of puncture Inwall, which is circumferentially symmetrically arranged with, is adapted to elastic card tactile construction in place's with the protection cap 23 of blood sample collection pipe 2, and when the two, which is in card, touches state, the rear end of blood-collecting needle tube 12 is just in before sealant to be pierced through.Figure 10, figure Shown in 11 is exactly this state.It is a kind of short arc convex clamping point 38, this short arc convex clamping point 38 and protection cap 23 that this elastic card, which touches construction, It is made up of elastomeric material.Puncture the blood sample collection pipe tube chamber after needle tubing tube core, annular seal space, blood-collecting needle tube tube core and pierced sealant and constitute a kind of blood channel.

It is axially extending on reference picture 9, Figure 12, the side wall of syringe 3 to have a kind of sliding groove 36 of tail end closing, Paracentesis needle holder push handle 132 It is prominent to pass this sliding groove 36 and be exposed at outside syringe 3.This sliding groove 36 extends to the rear portion of syringe 3 from the front portion of syringe 3, the protection cap for the blood sample collection pipe 2 being nested with cylindrical cavity 33 23 are located in the length of interval of the sliding groove 36, therefore, and the sliding groove 36 is again simultaneously operation window 35.The axial length of the inner chamber of syringe 3 is more than the exposed puncture needle tubing 11 outside syringe 3 Length.Puncture needle tubing 11, Paracentesis needle holder 13, blood-collecting needle tube 12 or even blood sample collection pipe 2 and constitute a kind of slide unit that can be slided with respect to the retrogressing of syringe 3.

Reference picture 12, at the end of blood sampling, along this sliding groove pusher Paracentesis needle holder 13 and can puncture needle tubing 11, until puncturing needle tubing 11 Submerge completely in the inner chamber of syringe 3.Blood sample collection pipe 2 can be now extracted backward, it is departed from syringe 3.

Reference picture 12, Figure 13, Figure 14, also include a kind of non-return device, and the non-return device is a kind of elastic symmetry closure tongue piece 5 , in the inner chamber of syringe 3 in the front of Paracentesis needle holder 13, puncture the tail end of needle tubing 11 and wore the closure joint portion of this closure tongue piece 5 and be fixed on Paracentesis needle holder 13.

So, after puncture needle tubing is removed, closure tongue piece 5 elastic reset blocks former puncture needle tubing 11 Outlet.Prevent, retreat slide unit in place can not before push away.So as to both ensure the puncture needle tubing 11 retreated It will not again elapse out and hurt sb.'s feelings, this syringe-type vacuum blood collector of the present invention can also be promoted disposable, will not be reused by criminal.

Reference picture 10, Figure 11, puncture and a kind of soft deposited wing 4 are provided with close syringe 3 that side outer peripheral face of needle tubing 11 , this soft deposited both sides of the wing 4 has the span, applies wing bottom surface in a kind of arcs of recesses being adapted with human body ancon, applies the bottom surface of the wing 4 and set sticky glue point.

The not described part of the present embodiment is identical with embodiment one.

Most preferred embodiment：

Reference picture 15, Figure 16, syringe-type vacuum blood collector, including vascular puncture needle tubing 11, blood-collecting needle tube 12 , blood sample collection pipe 2, syringe 3, apply the wing 4, closure tongue piece 5, drive end bearing bracket 6 and the telescopic protective cover being set in together slided by fixed cover 71 and slip cap 72.Syringe 3 It is a hollow cylindrical barrel-type casing, is made up of medical transparent material.Drive end bearing bracket 6 is located at the front of syringe 3 and affixed with fixed cover 71 in telescopic protective cover, the rear end outer peripheral face of drive end bearing bracket 6 and syringe 3 The sizes such as outer peripheral face smoothly transit, and the leading section of drive end bearing bracket 6 intersects in the downwardly extending wedge shape that contracted in one kind, the outer peripheral face at the upper contracting end and the rear end of drive end bearing bracket 6 of the tapered ramp, and the lower extending end of the tapered ramp is close to drive end bearing bracket 6 Outer peripheral face（I.e. close to case inside edge）Position form a kind of small boss A31, boss A31 centers, which are set, punctures the installation through-hole of needle tubing 11, punctures needle tubing 11 through installation through-hole and along slip cap 72 Inner chamber is axially walked and is finally fixed on Paracentesis needle holder, and Paracentesis needle holder 13 is located at the tail end of slip cap 72 and affixed with syringe 3.Puncture needle tubing 11 and syringe 3 Center parallel but decentered distribution, the needle point of the needle tubing and the major part of needle tubing are exposed outside syringe 3.The inside of syringe 3 has a telescopic protective cover chamber 37, an annular seal space 32 and a cylindrical cavity 33, syringe 3 It is telescopic protective cover chamber 37 to have in the middle part of inner chamber in front of a partition, this partition, and this partition rear is annular seal space 32 and cylindrical cavity 33, and annular seal space 32 is located at the front of cylindrical cavity 33.Puncture needle tubing 11 Tube core connected with the annular seal space 32.The side of Paracentesis needle holder 13 is touched in open recesses and with sealing paste on rear side of this partition of the inner chamber of syringe 3, and the cavity formed is annular seal space 32, the annular seal space 32 Opposite side wall be annular seal space rear wall, the rear side of the rear wall of annular seal space 32 has a small boss B131, and the front end fixation of blood-collecting needle tube 12 is in this boss B131 On, rear end and needle tubing are largely extended back and are plugged in the pipe close of blood sample collection pipe 2, and the tube core of blood-collecting needle tube 12 is connected with the annular seal space 32, and blood-collecting needle tube 12 and cylindrical cavity 33 are coaxial.Blood taking needle 12 are coated with blood sampling sealing shroud 15, and blood sample collection pipe pipe close is provided centrally with axially extending to the core bore of sealant 21, and this core bore internal diameter is more slightly larger than the blood sampling external diameter of sealing shroud 15.So, blood-collecting needle tube 12 Band with blood sampling sealing shroud 15 along this core bore penetrate pipe close when, blood sampling sealing shroud 15 is compressed radial distorted dilatating and deformable by axial compression, just with this core bore inner hole wall extrusion friction, will not more allow blood-collecting needle tube 12 Deviate from blood sample collection pipe pipe close.Cylindrical cavity 33 be located at annular seal space 32 rear and its rear end open, the pipe close of blood sample collection pipe 2 in preceding screw-casing in the cylindrical cavity 33, cylindrical cavity 32 Length be less than the length of blood sample collection pipe 2, the afterbody for the blood sample collection pipe 2 being nested with cylindrical cavity 32 is exposed outside cylindrical cavity.Blood sample collection pipe pipe close is by seal rubber plug 22 and protection cap 23 Composition, 22 sets of plugs of seal rubber plug are in collecting pipe tube chamber, and the lid plug of protection cap 23 is on the collecting pipe mouth of pipe and seal rubber plug, and the pipe close aft bulkhead of blood sample collection pipe 2 has a sealant that can be pierced through by the rear end of blood-collecting needle tube 12 21, sealant thickness is 1.5MM, and the cylindrical cavity 33 of the front end face of blood sample collection pipe 2 has the accommodating space of the preceding blood sample collection pipe 2 pushed away for this sealant 21 of puncture.Cylindrical cavity 33 inwalls, which are circumferentially symmetrically arranged with, is adapted to elastic card tactile construction in place's with the protection cap 23 of blood sample collection pipe 2, and when the two, which is in card, touches state, the rear end of blood-collecting needle tube 12 is just in before sealant to be pierced through.Figure 15 Shown is exactly this state.It is a kind of short arc convex clamping point, this short arc convex clamping point and protection cap 23 that this elastic card, which touches construction, It is made up of elastomeric material.Puncture the blood sample collection pipe tube chamber after needle tubing tube core, annular seal space, blood-collecting needle tube tube core and pierced sealant and constitute a kind of blood channel.

Reference picture 19, slip cap 72, syringe 3, puncture needle tubing 11, Paracentesis needle holder 13 and blood-collecting needle tube 12 Or even blood sample collection pipe 2 constitutes a kind of relative slide unit for being relatively fixed the slip of set 71.At the end of blood sampling, can pusher syringe 3, slip cap 72 is relatively fixed set 71 with the retrogressing of syringe 3 Slide backward, be also retracted into gradually in the inner chamber of fixed cover 71 also with the puncture needle tubing 11 drawn back, until submerging completely in the inner chamber of fixed cover 71.Blood sample collection pipe 2 can be now extracted backward, make itself and syringe 3 Depart from.

Reference picture 17, Figure 18, also include a kind of non-return device, and the non-return device is a kind of elastic symmetry closure tongue piece 5, installed in boss In the inner chamber of drive end bearing bracket 6 at A31 rears, puncture the tail end of needle tubing 11 and wore the closure joint portion of this closure tongue piece 5 and be finally fixed on Paracentesis needle holder 13.

So, after puncture needle tubing is removed, closure tongue piece 5 elastic reset blocks former puncture needle tubing 11 Outlet.Prevent to retreat slide unit in place can not before push away.So as to both ensure the puncture needle tubing 11 retreated It will not again elapse out and hurt sb.'s feelings, this syringe-type vacuum blood collector of the present invention can also be promoted disposable, will not be reused by criminal.

Reference picture 15, Figure 16, puncture and a kind of soft deposited wing 4 are provided with close syringe 3 that side outer peripheral face of needle tubing 11 , this soft deposited both sides of the wing 4 has the span, applies wing bottom surface in a kind of arcs of recesses being adapted with human body ancon, applies the bottom surface of the wing 4 and set sticky glue point.

Claims

Syringe-type vacuum blood collector, including vascular puncture needle tubing, blood-collecting needle tube and blood sample collection pipe, it is characterized in that, also include a kind of syringe, the tail end of vascular puncture needle tubing bias in the way of close to syringe outer peripheral face is plugged on the Paracentesis needle holder of syringe leading section, the needle point of the needle tubing and the major part of needle tubing are exposed outside syringe, there is an annular seal space and a cylindrical cavity inside syringe, wherein annular seal space is located at before cylindrical cavity, the tube core of vascular puncture needle tubing is connected with the annular seal space, the front end of blood-collecting needle tube is installed with the capsule walls, rear end and needle tubing largely extend back and are plugged in the pipe close of blood sample collection pipe, the tube core of blood-collecting needle tube is connected with the annular seal space, the rear and its rear end that cylindrical cavity is located at annular seal space are opened, blood sample collection pipe pipe close is nested with the cylindrical cavity preceding in removable mode, blood sample collection pipe pipe close aft bulkhead has a sealant that can be pierced through by blood-collecting needle tube rear end , There is the cylindrical cavity of blood sample collection pipe front end face the blood sample collection pipe tube chamber after the space that the preceding blood sample collection tube capacity pushed away is put for this sealant of puncture, vascular puncture needle tubing tube core, annular seal space, blood-collecting needle tube tube core and pierced sealant to constitute a kind of blood channel.
According to claim 1 Described syringe-type vacuum blood collector, it is characterised in that the vascular puncture needle tubing and the center parallel of syringe arranged and extended forward close to syringe outer peripheral face.
According to claim 1 Described syringe-type vacuum blood collector, it is characterised in that the anterior annular seal space of syringe is the perspective portion on a kind of blood back cavity, the position that syringe outer peripheral face is adapted with the annular seal space with observable blood back.
According to claim 1 Described syringe-type vacuum blood collector, it is characterised in that syringe leading section is in the downwardly extending wedge shape that contracted in one kind, and vascular puncture needle tubing is affixed in the wedge-shaped lower extending end head and syringe, and the perspective portion of observable blood back is located on the wedge-shaped inclined-plane.
According to claim 4 Described syringe-type vacuum blood collector, it is characterised in that the upper contracting end of the tapered ramp and the outer peripheral face of syringe intersect, the lower extending end of the tapered ramp is forming a kind of small boss A close to the position of syringe outer peripheral face , vascular puncture needle tubing tail end is affixed by this boss A and syringe.
Syringe-type vacuum blood collector according to claim 1, it is characterised in that covered after annular seal space with a small boss B , the fixation of blood-collecting needle tube front end is in this boss

On B.
According to claim 1 or 6 Described syringe-type vacuum blood collector, it is characterised in that blood-collecting needle tube and syringe arranged concentric, and extend along syringe center back.
According to claim 1 Described syringe-type vacuum blood collector, it is characterized in that, cylindrical cavity has front bulkhead, has interval between the annular seal space bonnet and cylindrical cavity front bulkhead, extends rearwardly through the blood-collecting needle tube of this cylindrical cavity front bulkhead while bearing is on the cylindrical cavity front bulkhead.
According to claim 1 Described syringe-type vacuum blood collector, it is characterised in that blood-collecting needle tube is coated with blood sampling sealing shroud, blood sample collection pipe pipe close is provided centrally with axially extending to the core bore of sealant, and this core bore internal diameter is more slightly larger than blood sampling sealing shroud external diameter.
Syringe-type vacuum blood collector according to claim 1, it is characterised in that blood sample collection pipe pipe close sealant thickness is 3-0.5MM 。
Syringe-type vacuum blood collector according to claim 10, it is characterised in that blood sample collection pipe pipe close sealant thickness is 1.5-0.5MM 。
According to claim 1 Described syringe-type vacuum blood collector, it is characterized in that, there is the construction being adapted with blood sample collection pipe pipe close, thus its annexation to be formed compared with consolidation that is connected with blood sample collection pipe pipe close, blood sample collection Guan Jing constructs loading and take out cylindrical cavity in cylindrical cavity.
According to claim 12 Described syringe-type vacuum blood collector, it is characterised in that blood sample collection pipe is plugged in cylindrical cavity, the construction being adapted is the construction that interference fits couple in a kind of size.
According to claim 12 Described syringe-type vacuum blood collector, it is characterized in that, cylindrical cavity inwall, which is circumferentially symmetrically arranged with, is adapted to elastic card tactile construction in place's with blood sample collection pipe pipe close, when the two, which is in card, touches state, blood-collecting needle tube rear end is just in before sealant to be pierced through, construction cylindrical cavity inwall is touched through thus elastic card and pipe close forms elastic urgent connection status, but this elastic drag is less than the axial force applied manually.
According to claim 14 Described syringe-type vacuum blood collector, it is characterised in that it can be a kind of short arc convex clamping point that this elastic card, which touches construction, or this short arc convex clamping point or blood sample collection pipe pipe close are made up of elastomeric material.
According to claim 15 Described syringe-type vacuum blood collector, it is characterised in that this short arc convex clamping point is a kind of convex salient point on cylindrical cavity inwall of dashing forward, thickness is low shallow and front and rear side has and is easy to pipe close to creep the arc-shaped transition passed through.
According to claim 12 Described syringe-type vacuum blood collector, it is characterized in that, the construction being adapted in cylindrical cavity with pipe close has two kinds, and one of which is the tactile construction of the circumferentially distributed or symmetrical elastic card of a plurality of inwalls along cylindrical cavity, and another construction being adapted is produced on pipe close outer peripheral face L shapes groove and the prominent salient point being produced on cylindrical cavity inwall, the prominent salient point enter L from the termination of the L shape groove vertical sections positioned at pipe close front end face Shape groove can simultaneously be slided wherein, when cylindrical cavity inwall and tactile pipe close elastic card, and the prominent salient point has been enter into L Reach in vertical section in shape groove but not yet the bottom of the vertical section, now blood-collecting needle tube rear end is just in before sealant to be pierced through, after sinciput blood sample collection pipe to blood-collecting needle tube pierces through sealant, the prominent salient point just reaches the bottom of the vertical section, blood sample collection pipe is now rotated, the prominent salient point enters Cross break section in L shape grooves.
According to claim 12 Described syringe-type vacuum blood collector, it is characterised in that blood sample collection pipe screw thread is connected in cylindrical cavity, the construction being adapted is a kind of threaded connection configuration.
According to claim 1 Described syringe-type vacuum blood collector, it is characterised in that blood sample collection pipe pipe close is made up of seal rubber plug and protection cap, fluid sealant plug sleeve plug is in collecting pipe tube chamber, and protection cap lid plug is on the collecting pipe mouth of pipe and seal rubber plug.
According to claim 1 Described syringe-type vacuum blood collector, it is characterised in that the length of cylindrical cavity is less than the length of blood sample collection pipe, the afterbody for the blood sample collection pipe being nested with cylindrical cavity is exposed outside cylindrical cavity.
According to claim 1 Described syringe-type vacuum blood collector, it is characterized in that, syringe is having a kind of strip grooves as operation window with being contained in blood sample collection pipe pipe close on the position being adapted in syringe along syringe is axially arranged, and this operation window has two, and Relative distribution is in the both sides of syringe.
According to claim 1 Described syringe-type vacuum blood collector, it is characterized in that, Paracentesis needle holder is located in the syringe inner chamber on the inside of syringe front bulkhead, Paracentesis needle holder inner chamber is annular seal space, it is axially extending in barrel sidewall to there is a kind of tail end to be provided with the sliding groove for retreating obstacle, Paracentesis needle holder push handle is prominent to be passed this sliding groove and is exposed at outside syringe, the axial length of syringe inner chamber is more than the length of the exposed puncture needle tubing outside syringe, puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube or even a kind of slide unit that can be slided with respect to syringe retrogressing of collecting pipe composition, retracted to as the retrogressing of slide unit punctures needle tubing in syringe inner chamber.
According to claim 1 Described syringe-type vacuum blood collector, it is characterized in that, Paracentesis needle holder is located in the syringe inner chamber on the inside of syringe front bulkhead, Paracentesis needle holder inner chamber is annular seal space, it is axially extending in barrel sidewall to there is a kind of tail end to be provided with the sliding groove for retreating obstacle, Paracentesis needle holder push handle is prominent to be passed this sliding groove and is exposed at outside syringe, the axial length of syringe inner chamber is more than the length of the exposed puncture needle tubing outside syringe, puncture needle tubing, Paracentesis needle holder, blood-collecting needle tube or even a kind of slide unit that can be slided with respect to syringe retrogressing of collecting pipe composition, retracted to as the retrogressing of slide unit punctures needle tubing in syringe inner chamber, also include a kind of non-return device, this non-return device is arranged between slide unit and syringe, if being pushed away before the retrogressing slide unit that extremely puncture needle tubing is retracted into syringe inner chamber is reverse will prevent contact with this non-return device.
According to claim 23 Described syringe-type vacuum blood collector, it is characterized in that, the non-return device is a kind of elastic symmetry closure tongue piece, in syringe inner chamber in front of Paracentesis needle holder, needle tubing tail end is punctured to wear the closure joint portion of this closure tongue piece and be fixed on Paracentesis needle holder, after puncture needle tubing is removed, tongue piece elastic reset blocks former puncture barrel outlet.
According to claim 23 Described syringe-type vacuum blood collector, it is characterised in that the non-return device is made up of Elastic buckle and pit, Elastic buckle is located on syringe, pit is located on slide unit, retreat slide unit its pit in place just with Elastic buckle clamping, so as to prevent to push away before puncturing needle tubing.
According to claim 25 Described syringe-type vacuum blood collector, it is characterised in that the Elastic buckle is made up of the buckle on elastic suspended tongue and outstanding tongue top, emptied close to syringe sliding groove tail end along the interval parallel with sliding groove and allow this empty sliding groove tail end and sliding groove ' U ' shapes are even worn, this ' U ' shape center forms an elastic suspended tongue, buckle is located at this elastic suspended tongue top and prominent convex in sliding groove, and pit is located in the push handle of Paracentesis needle holder, and Paracentesis needle holder push handle in place is retreated along sliding groove, its pit just with this buckle clamping.
According to claim 1 Described syringe-type vacuum blood collector, it is characterized in that, also include a kind of telescopic protective cover being set in together by fixed cover and slip cap slip, syringe and slip cap tail end are affixed, Paracentesis needle holder is located at slip cap tail end and affixed with syringe, Paracentesis needle holder inner chamber is annular seal space, needle tubing is punctured axially to walk and be finally fixed on Paracentesis needle holder along slip cap inner chamber, slip cap, syringe, puncture needle tubing, Paracentesis needle holder and blood-collecting needle tube or even a kind of relative slide unit for being relatively fixed set slip of blood sample collection pipe composition, retracted to as the retrogressing of slide unit punctures needle tubing in fixed cover inner chamber.
According to claim 1 Described syringe-type vacuum blood collector, it is characterized in that, also include a kind of telescopic protective cover and a kind of non-return device being set in together by fixed cover and slip cap slip, syringe and slip cap tail end are affixed, Paracentesis needle holder is located at slip cap tail end and affixed with syringe, Paracentesis needle holder inner chamber is annular seal space, needle tubing is punctured axially to walk and be finally fixed on Paracentesis needle holder along slip cap inner chamber, slip cap, syringe, puncture needle tubing, Paracentesis needle holder and blood-collecting needle tube or even a kind of relative slide unit for being relatively fixed set slip of blood sample collection pipe composition, retracted to as the retrogressing of slide unit punctures needle tubing in fixed cover inner chamber, this non-return device is arranged between slide unit and fixed cover, if being pushed away before the retrogressing slide unit that extremely puncture needle tubing is retracted into fixed cover inner chamber is reverse will prevent contact with this non-return device.
According to claim 28 Described syringe-type vacuum blood collector, it is characterized in that, the non-return device is a kind of elastic symmetry closure tongue piece, in front of Paracentesis needle holder, in the inner chamber of fixed cover front bulkhead, needle tubing tail end is punctured to wear the closure joint portion of this closure tongue piece and be fixed on Paracentesis needle holder, after puncture needle tubing is removed, tongue piece elastic reset blocks former puncture barrel outlet.