CN209529145U - Venous blood sample collection needle - Google Patents

Abstract

The utility model discloses a kind of venous blood sample collection needles, are related to vein haemospasia engineering device technique field.The venous blood sample collection needle includes syringe, blood taking needle, needle stand, rebound component and hose.Syringe has the cylinder mouth and cylinder tail being oppositely arranged, blood taking needle is fixedly connected with needle stand, and blood taking needle is arranged in a mouth, the inner cavity that needle stand is set to syringe by springing back component, the side wall of syringe is provided with rebound button, and hose is arranged in a tail and is connected to the pipeline of blood taking needle.Needle stand includes the seat ontology and sliding part being fixedly connected, and sliding part has to be engaged with rebound button, so that blood taking needle is in stationary state, and be detached from rebound button, blood taking needle is made to be in retracted state.Venous blood sample collection needle design is reasonable, structure is simple, facilitate fixation, be conducive to acquire multitube blood sample at patient's vein, pull out needle rapidly, conveniently, it is fabulous that improve part medical staff's gimmick unskilled, when pulling out that needle speed is slow or dynamics is not reciprocity, caused by situations such as pulling out bleeding, lump after needle.

Description

Venous blood sample collection needle

Technical field

The utility model relates to vein haemospasia engineering device technique fields, in particular to a kind of venous blood sample collection needle.

Background technique

Currently, venous blood collection of specimens be by disposable vacuum blood collection tube and disposable vein blood specimen collecting needle, Vacuum blood collection tube is connected and composed by hose and disposable vein blood specimen collecting needle.

Its mechanism is: the one end for acquiring needle penetrated into human vein blood vessel, then the other end is penetrated into vacuum blood collection tube, Achieve the purpose that quantitative blood sampling using negative pressure of vacuum principle.

The demand that different patients acquire blood is different, it is sometimes desirable to patient's multitube blood is acquired, due to existing venous samples Needle is acquired after penetrating human vein blood vessel, needs medical staff's proficiency fixed needle, holds vacuum blood collection tube on the other hand, when encountering Medical staff's gimmick is unskilled, after the completion of blood collection, if pull out that needle speed is slow or dynamics is not reciprocity, and patient's venous blood collection Easily there is pulling out bleeding after needle, has phenomena such as lump in place, brings pain to patient.

Utility model content

The purpose of this utility model is to provide a kind of venous blood sample collection needles, and design is reasonable, structure is simple, user Just, what is occurred when preferably improving patient's venous blood collection pulls out bleeding after needle, has the phenomenon that lump, alleviates the pain of patient.

The embodiments of the present invention are achieved in that

Based on above-mentioned purpose, the embodiments of the present invention provide a kind of venous blood sample collection needle, including syringe, blood sampling Needle, needle stand, rebound component and hose；

The syringe has the cylinder mouth and cylinder tail being oppositely arranged, and the blood taking needle is fixedly connected with the needle stand, and described Blood taking needle is arranged in the cylinder mouth, and the needle stand is set to the inner cavity of the syringe by the rebound component, the syringe Side wall is provided with rebound button, and the hose is arranged in the cylinder tail and is connected to the pipeline of the blood taking needle；

The needle stand includes the seat ontology and sliding part being fixedly connected, and the sliding part has and the rebound button snap It closes, so that the blood taking needle is in stationary state, and be detached from the rebound button, the blood taking needle is made to be in retracted state.

In addition, the venous blood sample collection needle that embodiment according to the present utility model provides, can also have following additional Technical characteristic:

In the alternative embodiment of the utility model, the rebound component includes the first spring and second spring, the seat Ontology includes peripheral wall, the first end wall and the second end wall, and first end wall and second end wall are oppositely arranged；

First spring is fixedly installed on the inner surface of the cylinder mouth, and be located at the cylinder mouth and first end wall it Between be in compressive state, the second spring is fixedly installed on the inner surface of the barrel sidewall, and is located at the barrel sidewall Between the peripheral wall in the raw, the second spring is oppositely arranged with the sliding part.

In the alternative embodiment of the utility model, the rebound button includes press-side, and the press-side includes engaging Slot, the engaging slot has inclined surface, and is arranged towards the cylinder tail；

The sliding part is inserted in the engaging slot, and including cooperating inclined-plane, the cooperation inclined-plane and the inclined surface phase Matching, the side wall of the syringe offer pressing through-hole, and the rebound button is embedded at the pressing through-hole, the sliding part and The pin base fastener can be set to the pressing through-hole by the engaging slot cooperation.

In the alternative embodiment of the utility model, the press-side further includes limiting section, the limiting section be seam allowance and With the engaging slot back to setting, make the limiting section towards the cylinder mouth；

The limiting section includes slide guide wall and limited wall, and the pressing through-hole includes front side wall and outer end wall, the front side Wall and the slide guide wall cooperate, and the rebound button is slided along the slide guide wall, and the outer end wall and the limited wall cooperate, limit Make the stroke of the rebound button；

The height dimension of the sliding part is less than the length dimension of the limited wall, and the limited wall is matched with the outer end wall When conjunction, the needle stand and the rebound button are detached from, and first spring drives the needle stand to slide towards the cylinder tail.

In the alternative embodiment of the utility model, the blood taking needle is fixedly installed on first end wall, the needle stand The flowing lumen of perforation is offered, second end wall offers connecting hole, and the hose is fixedly connected with the connecting hole, and with The pipeline of the blood taking needle is connected to.

In the alternative embodiment of the utility model, the needle stand further includes transition push rod, the transition push rod with it is described Seat ontology is fixedly connected, and is located at side of first end wall far from second end wall, and first spring pocket is set to institute It states transition push rod and is abutted with first end wall, the blood taking needle is fixedly installed on the transition push rod far from the seat ontology One end.

In the alternative embodiment of the utility model, the inner surface of the barrel sidewall is additionally provided with guide runner, described to lead The extending direction of sliding slot is identical as the axis direction of the syringe, and the sliding part is provided with cunning far from the end of the seat ontology Part, the saddle can be slided along the guide runner.

In the alternative embodiment of the utility model, the syringe is additionally provided with fixing belt close to one end of the cylinder tail.

In the alternative embodiment of the utility model, the fixing belt is whip bracelet, and the whip bracelet includes first Fixed knot and the second fixed knot, first fixed knot are fixedly installed on the side of the syringe peripheral wall, second fixed knot It is fixedly installed on the other side of the syringe peripheral wall, the bending of the bending direction of first fixed knot and second fixed knot It is contrary, and form closed circle.

In the alternative embodiment of the utility model, the outside of the rebound button is provided with protection cap, the protection cap It is detachably connected with the syringe.

The beneficial effect of the utility model embodiment is: design is reasonable, structure is simple, when pressing springs back button, rebound Component effect, can fast, easily retract to needle stand and blood taking needle in syringe, medical staff unskilled for gimmick, Situations such as needle can quickly be pulled out, alleviate bleeding, lump after pulling out needle, be conducive to the pain of reduction of patient.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the structural schematic diagram of venous blood sample collection needle provided by the embodiment of the utility model；

Fig. 2 is the cross-sectional view of Fig. 1；

Fig. 3 is the cross-sectional view that venous blood sample collection needle provided by the embodiment of the utility model is in retracted state；

Fig. 4 is the structural schematic diagram of syringe in Fig. 1；

Fig. 5 is the structural schematic diagram of needle stand in Fig. 2；

Fig. 6 is the structural schematic diagram that the first visual angle of button is sprung back in Fig. 2；

Fig. 7 is the structural schematic diagram that the second visual angle of component is sprung back in Fig. 2；

Fig. 8 is the structural schematic diagram that fixing belt unfolded state is arranged in syringe；

Fig. 9 is the structural schematic diagram that fixing belt stationary state is arranged in syringe；

Figure 10 is the status diagram before venous blood sample collection needle is taken a blood sample；

Figure 11 is the status diagram in venous blood sample collection needle blood collection procedure；

Figure 12 is the status diagram after the completion of venous blood sample collection needle use.

Icon: 1- venous blood sample collection needle；2- syringe；3- blood taking needle；4- needle stand；The first spring of 5-；6- second spring； 7- hose；8- springs back button；9- sliding part；10- ontologies；11- transition push rod；12- mouths；13- tails；14- pressing is logical Hole；15- guide runner；The first end wall of 16-；The second end wall of 17-；18- cooperates inclined-plane；19- limiting section；20- engaging slot；21- protection Lid；22- thorn plug needle；23- syringe needle；24- shank；25- fixation kit；The first fixed knot of 26-；The second fixed knot of 27-；28- inserting needle Grip part；29- fixed part；30- first holds section；31- second holds section.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the present invention, it should be noted that term " first ", " second ", " third " etc. are only used for area Divide description, is not understood to indicate or imply relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition Concrete meaning in utility model.

The embodiments of the present invention are described in detail below in conjunction with attached drawing, but the utility model can be by right It is required that the multitude of different ways for limiting and covering is implemented.

Embodiment

Fig. 1 is the structural schematic diagram of venous blood sample collection needle 1 provided in this embodiment, and Fig. 2 is solid for venous blood sample collection needle 1 Determine the cross-sectional view of state, Fig. 3 is the cross-sectional view of 1 retracted state of venous blood sample collection needle, as shown in Figure 1-Figure 3.

Venous blood sample collection needle 1 provided in this embodiment includes syringe 2, blood taking needle 3, needle stand 4, rebound component and hose 7, wherein syringe 2 is the cavity-like structure of both ends open, and blood taking needle 3 is fixedly connected with needle stand 4, and needle stand 4 is embedded at syringe 2 Inner cavity, blood taking needle 3 are arranged in syringe 2, and the one end of needle stand 4 far from blood taking needle 3 is fixedly connected with hose 7, and rebound component fixation is set It is placed in the inner cavity of syringe 2, and for abutting with needle stand 4.

Springing back component includes the first spring 5 and second spring 6, and 2 side wall of syringe is provided with rebound button 8, and second spring 6 is made For needle stand 4, engage needle stand 4 with rebound button 8, when original state, the first spring 5 is in compressive state, at second spring 6 Engage in the sliding part 9 of nature, needle stand 4 with rebound button 8, blood taking needle 3 is fixed relative to syringe 2, and blood taking needle 3 protrudes from Syringe 2, facilitates medical staff to use.When pressing springs back button 8, rebound button 8 drives needle stand 4 to move downward, second spring 6 It being compressed, the sliding part 9 of needle stand 4 deviates from the side wall of syringe 2, and the first spring 5 under the effect of elasticity, pushes needle stand 4 to move backward, So that needle stand 4 and blood taking needle 3 bounce back along the extending direction of syringe 2.That is pressing rebound component, so that it may side easily and fast It helps medical staff to pull out needle, and retracts to blood taking needle 3 in syringe 2, improve safety, be good for the environment.

The specific structure to all parts of the venous blood sample collection needle 1 and mutual corresponding relationship carry out detailed below It describes in detail bright.

Fig. 4 is the structural schematic diagram of syringe 2, shown referring to figure 4..

The cross sectional shape of syringe 2 is ellipsoidal structure, has the cylinder mouth 12 and cylinder tail 13 being oppositely arranged, with blood taking needle 3 Corresponding one end is cylinder mouth 12, and one end corresponding with hose 7 is cylinder tail 13, and cylinder mouth 12 offers first through hole, cylinder tail 13 Offer the second through-hole, blood taking needle 3 is arranged in first through hole, and hose 7 is arranged in the second through-hole, the side wall of syringe 2 offer by Through-hole 14 is pressed, rebound button 8 is embedded at pressing through-hole 14, and can move up and down along pressing through-hole 14.

Optionally, syringe 2 is hollow and thin-walled structure, and needle stand 4, blood taking needle 3 and hose 7 can be made along the cavity of syringe 2 It slides back and forth.

First spring 5 and second spring 6 are pressure spring, and the first spring 5 and second spring 6 include fixing end and freedom End, the fixing end of the first spring 5 is fixedly connected with the inner surface of cylinder mouth 12, so that the telescopic direction of the first spring 5 and syringe 2 Extending direction is identical, and the fixing end of second spring 6 is fixedly connected with the inner surface of 2 side wall of syringe, and second spring 6 and pressing are logical Hole 14 is oppositely arranged, the side of the telescopic direction direction pressing through-hole 14 of second spring 6.

It is understood that the cross sectional shape of syringe 2 is not limited to the ellipse that the present embodiment provides, it can also be circle The regular figures such as shape, rectangle or irregular figure, specifically with no restrictions, as long as blood taking needle 3 and needle stand 4 can be enable to exist 2 contract of syringe, while convenient for fixed.

In the present embodiment, the first through hole eccentric setting opened up at cylinder mouth 12, it is assumed that pressing through-hole 14 is opened in syringe 2 upside, then first through hole is opened in a mouth 12 close to the position of downside, is conducive to medical staff for blood taking needle 3 and penetrates human body Vein blood vessel after, facilitate operation rebound button 8, and make syringe 2 parallel with skin at patient's vein as far as possible, convenient for fixation.

Optionally, the inner surface of 2 side wall of syringe is additionally provided with guide runner 15, and guide runner 15 and pressing through-hole 14 are located at same Side, and extend along the axis direction of syringe 2.

Fig. 5 is the structural schematic diagram of needle stand 4, shown referring to figure 5..

Needle stand 4 includes the seat ontology 10, sliding part 9 and the transition push rod 11 that are fixedly connected, seat ontology 10 include peripheral wall, First end wall 16 and the second end wall 17, the first end wall 16 and the second end wall 17 are oppositely arranged, and sliding part 9 is fixedly installed on week Wall, transition push rod 11 is fixedly installed on the first end wall 16, and is located at side of first end wall 16 far from the second end wall 17, wherein Sliding part 9 is used for and springs back the cooperation of button 8, is used for needle stand 4 and the fixation of syringe 2 or the leading along 2 side wall of syringe of sliding part 9 Sliding slot 15 slides；Transition push rod 11 is arranged towards 12 direction of cylinder mouth, cooperates for connecting blood taking needle 3, and with first through hole, so that Blood taking needle 3 is fixedly connected by transition push rod 11 with needle stand 4.

Optionally, sliding part 9 can engage with rebound button 8, so that needle stand 4 is relative to the fixation of syringe 2, i.e. blood taking needle 3 It is also at stationary state, when sliding part 9 is slided along the guide runner 15 of 2 side wall of syringe, i.e. needle stand 4 and rebound button 8 is detached from, Blood taking needle 3 is set to be in retracted state.

Optionally, sliding part 9 includes cooperation inclined-plane 18, is engaged with rebound button 8, and the longitudinal section of sliding part 9 is triangle Shape, sliding part 9 are provided with saddle far from the end of ontology 10, which can slide along the guide runner 15 of 2 side wall of syringe.

Optionally, seat ontology 10 is thin-walled hollow structure, offers through-hole on the first end wall 16, the second end wall 17, from And blood taking needle 3 is connected to by seat ontology 10 with hose 7.

In setting, the first spring 5 is sheathed on transition push rod 11, and the free end of the first spring 5 is supported with the first end wall 16 It connects, in the initial state, so that the first spring 5 is in compressive state, and then generate restoring force.Blood taking needle 3 is fixedly installed on transition The one end of push rod 11 far from ontology 10.When not engaging between needle stand 4 and syringe 2, the restoring force of the first spring 5 is squeezed Needle stand 4 pushes needle stand 4 to slide towards 13 direction of cylinder tail, to blood taking needle 3 be retracted in the cavity of syringe 2.

In the initial state, second spring 6 is located between 2 side wall of syringe and peripheral wall, and second spring 6 is in nature shape State, when pressing springs back button 8, rebound button 8 pushes needle stand 4, and then second spring 6 is pushed to compress.

Fig. 6 is the structural schematic diagram for springing back 8 first visual angle of button, and Fig. 7 is the structural representation for springing back 8 second visual angle of button Figure, please refers to shown in Fig. 6 and Fig. 7.

Springing back button 8 includes press-side, and press-side is the one end cooperated with needle stand 4, and press-side includes engaging slot 20, should Engaging slot 20 is inclination groove shape, including big opening end and osculum end, wherein towards cylinder tail 13, engaging slot 20 has to incline big opening end Inclined-plane, i.e. inclined surface are arranged towards cylinder tail 13.The inclined surface and the cooperation inclined-plane 18 of needle stand 4 match, and make the sliding part of needle stand 4 9 are inserted in engaging slot 20.

Rebound button 8 is embedded at the pressing through-hole 14 of syringe 2, and sliding part 9, which can block needle stand 4 with the cooperation of engaging slot 20, to be set In in pressing through-hole 14.

Optionally, press-side further includes limiting section 19, and limiting section 19 is seam allowance, and limiting section 19 and engaging slot 20 are back to setting It sets, makes limiting section 19 towards 12 direction of cylinder mouth.

Specifically, limiting section 19 includes slide guide wall and limited wall, the pressing through-hole 14 of syringe 2 includes front side wall and outer end Wall, front side wall and slide guide wall cooperate, and rebound button 8 is slided along slide guide wall, and outer end wall and limited wall cooperate, and press to limit rebound The stroke of button 8.

The height dimension d1 of sliding part 9 is less than the length dimension d2 of limited wall, arrives its satisfaction pressing rebound button 8 certain When position, the effect of the first spring 5 enables needle stand 4 to skid off from the engaging slot 20 of rebound button 8, when limited wall and outer end wall are matched When conjunction, needle stand 4 and rebound button 8 are detached from, and first spring 5 drives needle stand 4 to slide towards 13 direction of cylinder tail.

It is understood that blood taking needle 3 can directly be fixedly installed on the first end wall 16, needle stand 4 offers the stream of perforation Cavity offers connecting hole in the second end wall 17, and hose 7 is fixedly connected with connecting hole, passes through the pipeline of flowing lumen and blood taking needle 3 Connection.

Optionally, the maloperation in using preceding or use process in order to prevent, accidentally pressing springs back button 8, in rebound button 8 Outside be provided with protection cap 21, protection cap 21 is detachably connected with syringe 2, and it is quiet that blood taking needle 3 first penetrated patient when in use Arteries and veins removes protection cap 21 when exhausting blood sample fastly, and after the completion of waiting blood specimen collections, pressing rebound button 8, blood taking needle 3 can be pulled out quickly Out, phenomena such as facilitating medical staff to operate, while improving patient's venous blood collection, pulling out the bleeding occurred after needle, lump.

Optionally, spinosity plug needle 22 is arranged far from one end of syringe 2 in hose 7, and thorn plug needle 22 is arranged rubber sleeve, uses When, rubber sleeve is pulled out, thorn plug needle 22 is inserted into vacuum blood collection tube.

Optionally, blood taking needle 3 includes syringe needle 23 and shank 24, and syringe needle 23 has inclined surface, is conducive to penetrate patient's body, Shank 24 is arranged with sheath, protects the clean, sanitary of syringe needle 23 and shank 24.On the basis of above scheme, inventor is in needle It is additionally provided with fixation kit 25 on cylinder 2, is conducive to fix on skin at syringe 2 and patient's vein.Optionally, fixation kit 25 is solid Surely it is set to the one end of syringe 2 close to tail 13.

Fig. 8 is the structural schematic diagram that 25 first state of fixation kit is arranged in syringe 2, and Fig. 9 is that fixation kit is arranged in syringe 2 The structural schematic diagram of 25 second states, please refers to shown in Fig. 8 and Fig. 9.

Fixation kit 25 includes inserting needle grip part 28 and fixed part 29, and can be folded in inserting needle grip part 28, inserting needle Also the folding two sides for being set to syringe 2, fixed part 29 and inserting needle grip part 28 are flexibly connected for grip part 28, and positioned at inserting needle The one end of grip part 28 far from syringe 2.

Optionally, inserting needle grip part 28 holds section 30 and second including first and holds section 31, the first gripping section 30 and second Gripping section 31 is connect with syringe 2, and is located at the two sides of syringe 2, and the first gripping section 30 and/or the second gripping section 31 can be opposite Syringe 2 rotates, to realize the purpose of folding.

Optionally, the first gripping section 30 and/or second holds the junction of section 31 and syringe 2 as flexible plastic material, so that First holds section 30 and/or the second gripping section 31 can rotate relative to syringe 2, consequently facilitating folding, instant packed, volume It is small, and medical staff's inserting needle can be facilitated to operate.

Fixed part 29 is located at two sides, after penetrating at patient's vein, fixed part 29 is unfolded to be bent, is fixed on patient's arm Place, existing venous blood sample collection needle 1 penetrates after vein blood vessel without fixation, and in venous blood collection, blood taking needle 3 is easy torsion, from And situations such as causing injury of vein or blood taking needle 3 to shift, slip, it is easy to appear blood sampling failure, or cause subcutaneous hematoma.

Venous blood sample collection needle 1 provided in this embodiment is fixed conveniently, and fixation kit 25 is capable of fixing on the skin, to adopting Blood needle 3 plays fixed function, avoids blood taking needle 3 and reverses in blood collection procedure and causes injury of vein, it is thus also avoided that blood taking needle 3 moves Position slips and blood sampling is caused to fail；The case where avoiding blood taking needle 3 from shifting, improve subcutaneous hematoma.

In the present embodiment, fixed part 29 is whip bracelet, since whip bracelet is a kind of utilization steel disc automatic Memory energy Power is engaged in the bracelet in wrist, it is only necessary to gently clap in wrist, can be engaged.It is steel sheet structure inside whip bracelet, outside Portion is rubber package, convenient, practical, is conducive to medical staff and quickly fixes venous blood sample collection needle 1.

Specifically, whip bracelet includes the first fixed knot 26 and the second fixed knot 27, the first fixing piece is fixedly installed on the One holds the side of section 30, and the second fixed knot 27 is fixedly installed on the other side of the second gripping section 31, the first fixed knot 26 and the Two fixed knots 27 include fixing end and free end, and fixing end is fixedly connected with inserting needle grip part 28, and free end is respectively to two End extends, and when being patted when in wrist, the first fixed knot 26 and the second fixed knot 27 can be fully engaged against automatically, and first is solid Surely the bending direction of section 26 and the bending direction of the second fixed knot 27 are easily fixed on the contrary, to form fixed ring.

Figure 10 is the status diagram before 1 use of venous blood sample collection needle, and Figure 11 is that venous blood sample collection needle 1 used Status diagram in journey, Figure 12 are the status diagram after the completion of 1 use of venous blood sample collection needle, please refer to Figure 10-Figure 12 It is shown.

The application method of venous blood sample collection needle 1 provided in this embodiment are as follows: medical staff is that patient chooses suitably Then venipuncture point selects the position of puncture vessel away from being tourniquet at about 6~10cm above point of puncture again, carry out normal Rule skin degerming remove the sheath on shank 24 later, blood taking needle 3 is penetrated into Venous Blood pipe, after seeing blood back, will Bracelet is fixed at arm, and by another terminal spine plug needle 22 insertion vacuum blood collection tube of blood taking needle 3, vacuum blood collection tube is on demand Blood volume needed for successively extracting when having extracted fastly, removes the protection cap 21 on rebound button 8, after the completion of blood sample extraction, by pushing back Button 8 is played, can be completed and pull out needle.

Venous blood sample collection needle 1 provided in this embodiment has the beneficial effect that

Design is reasonable, structure is simple, and fixation kit 25 is conveniently fixed on patient skin, plays fixed work to blood taking needle 3 With avoiding blood taking needle 3 and reversed in blood collection procedure and cause injury of vein, it is thus also avoided that the displacement of blood taking needle 3 slips and causes to take a blood sample Failure；The case where avoiding blood taking needle 3 from shifting, improve subcutaneous hematoma, especially for the trouble for needing to acquire multitube blood sample Person, significantly reduces the pain of patient, and rebound component cooperation needle stand 4 is conducive to pull out that needle is rapid, and fabulous improves part medical care Personnel's gimmick is unskilled, when pulling out that needle speed is slow or dynamics is not reciprocity, caused by situations such as pulling out bleeding, lump after needle, practicability By force.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention can be tied mutually It closes.

The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.

Claims (10)

1. a kind of venous blood sample collection needle, which is characterized in that including syringe, blood taking needle, needle stand, rebound component and hose；

The syringe has the cylinder mouth and cylinder tail being oppositely arranged, and the blood taking needle is fixedly connected with the needle stand, and the blood sampling Needle is arranged in the cylinder mouth, and the needle stand is set to the inner cavity of the syringe, the side wall of the syringe by the rebound component It is provided with rebound button, the hose is arranged in the cylinder tail and is connected to the pipeline of the blood taking needle；

The needle stand includes the seat ontology and sliding part being fixedly connected, and the sliding part has to be engaged with the rebound button, is made The blood taking needle is in stationary state, and is detached from the rebound button, and the blood taking needle is made to be in retracted state.

2. venous blood sample collection needle according to claim 1, which is characterized in that the rebound component include the first spring and Second spring, the seat ontology include peripheral wall, the first end wall and the second end wall, first end wall and the second end wall phase To setting；

First spring is fixedly installed on the inner surface of the cylinder mouth, and is located between the cylinder mouth and first end wall In compressive state, the second spring is fixedly installed on the inner surface of the barrel sidewall, and is located at the barrel sidewall and institute It states between peripheral wall in the raw, the second spring is oppositely arranged with the sliding part.

3. venous blood sample collection needle according to claim 2, which is characterized in that the rebound button includes press-side, institute Stating press-side includes engaging slot, and the engaging slot has inclined surface, and is arranged towards the cylinder tail；

The sliding part is inserted in the engaging slot, and including cooperating inclined-plane, the cooperation inclined-plane matches with the inclined surface, The side wall of the syringe offers pressing through-hole, and the rebound button is embedded at the pressing through-hole, the sliding part with it is described The pin base fastener can be set to the pressing through-hole by engaging slot cooperation.

4. venous blood sample collection needle according to claim 3, which is characterized in that the press-side further includes limiting section, institute Limiting section is stated for seam allowance and with the engaging slot back to setting, makes the limiting section towards the cylinder mouth；

The limiting section includes slide guide wall and limited wall, and the pressing through-hole includes front side wall and outer end wall, the front side wall with The slide guide wall cooperation, the rebound button are slided along the slide guide wall, and the outer end wall and the limited wall cooperate, and limit institute State the stroke of rebound button；

The height dimension of the sliding part is less than the length dimension of the limited wall, and the limited wall and the outer end wall cooperate When, the needle stand and the rebound button are detached from, and first spring drives the needle stand to slide towards the cylinder tail.

5. venous blood sample collection needle according to claim 2, which is characterized in that the blood taking needle is fixedly installed on described One end wall, the needle stand offer the flowing lumen of perforation, and second end wall offers connecting hole, the hose and the connection Hole is fixedly connected, and is connected to the pipeline of the blood taking needle.

6. venous blood sample collection needle according to claim 2, which is characterized in that the needle stand further includes transition push rod, institute It states transition push rod to be fixedly connected with the seat ontology, and is located at side of first end wall far from second end wall, it is described First spring pocket is set to the transition push rod and abuts with first end wall, and the blood taking needle is fixedly installed on the transition and pushes away The one end of bar far from the seat ontology.

7. venous blood sample collection needle described in -6 any one according to claim 1, which is characterized in that the barrel sidewall it is interior Surface is additionally provided with guide runner, and the extending direction of the guide runner is identical as the axis direction of the syringe, and the sliding part is remote End from the seat ontology is provided with saddle, and the saddle can be slided along the guide runner.

8. venous blood sample collection needle according to claim 7, which is characterized in that the syringe is close to one end of the cylinder tail It is additionally provided with fixation kit；

The fixation kit includes inserting needle grip part and fixed part, and the inserting needle grip part is folding to be set to the syringe Two sides, the fixed part are connect with the inserting needle grip part, and are located at the described one end of inserting needle grip part far from the syringe.

9. venous blood sample collection needle according to claim 8, which is characterized in that the inserting needle grip part includes the first gripping Section and second holds section, and the first gripping section and described second hold section and connect with the syringe, and described first holds Section and/or the second gripping energy conservation are enough relative to syringe rotation；

The fixed part is whip bracelet, and including the first fixed knot and the second fixed knot, the first fixed knot fixed setting It is held in described first and saves the side far from syringe, second fixed knot is fixedly installed on described second and holds section far from syringe The other side, the bending direction of the bending direction of first fixed knot and second fixed knot is on the contrary, and form fixed ring.

10. venous blood sample collection needle according to claim 7, which is characterized in that the outside of the rebound button is provided with Protection cap, the protection cap are detachably connected with the syringe.