CN210784371U

CN210784371U - Blood taking needle capable of automatically retracting

Info

Publication number: CN210784371U
Application number: CN201921231347.1U
Authority: CN
Inventors: 时烨
Original assignee: Suzhou Kyuan Medical Apparatus Co ltd
Current assignee: Suzhou Kyuan Medical Apparatus Co ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-06-19
Anticipated expiration: 2029-08-01

Abstract

The utility model discloses an automatic retraction blood taking needle, which comprises a sleeve and a retraction unit, wherein the inner side surfaces of two ends of the sleeve are fixedly connected with a compression spring, one end of the compression spring, which is far away from the sleeve end, is fixedly connected with a baffle, the middle part of the outer edge of the baffle is provided with a groove, the middle part of the baffle at the upper end is fixedly connected with a puncture needle, the puncture needle passes through a through hole arranged at the upper end of the sleeve, the middle part of the baffle at the lower end is fixedly connected with a blood collection needle, the blood collection needle passes through a through hole arranged at the lower end of the sleeve, one end of the puncture needle, which is far away from the sleeve end, is fixedly connected with the blood collection needle through a blood collection hose, the retraction unit comprises a tension spring, a pin column and a button, one end of the tension spring is fixedly, prevent the puncture needle and the blood collection needle from being exposed in the air to cause environmental pollution, and is convenient to use.

Description

Blood taking needle capable of automatically retracting

Technical Field

The utility model relates to the technical field of medical equipment, in particular to an automatic retraction blood taking needle.

Background

The blood taking needle is an instrument for collecting blood samples in the medical examination process, the blood taking needle is the most common used by medical institutions, the most common disposable consumable is used, the venous blood collection is mainly used for collecting and storing blood samples, the main principle is that a certain amount of negative pressure is preset in the production process of a vacuum blood collection tube, after the blood taking needle is punctured into a blood vessel, blood automatically flows into the blood collection tube due to the negative pressure effect in the blood collection tube, the blood sample collection is completed, the traditional blood taking needle generally adopts a needle seat structure with single wings or double wings, after the use, the needle head is exposed outside, accidental puncture and cross infection are easily caused, environmental pollution is easily caused, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a blood taking needle that can contract automatically, puncture needle and blood taking needle all can contract automatically to the sleeve inside after using, avoid causing accidental puncture and cross infection, prevent that puncture needle and blood taking needle from exposing in the air and arousing environmental pollution, convenient to use can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: an automatically retractable blood lancet includes a sleeve and a retraction unit;

sleeve barrel: the inner side surfaces of two ends of the sleeve are fixedly connected with compression springs, one ends of the compression springs, far away from the sleeve end, are fixedly connected with baffles, grooves are formed in the middle of the outer edges of the baffles, puncture needles are fixedly connected with the middle of the baffle at the upper end and penetrate through holes formed in the upper end of the sleeve, blood collection needles are fixedly connected with the middle of the baffle at the lower end and penetrate through holes formed in the lower end of the sleeve, and the ends, far away from the sleeve end, of the puncture needles and the blood collection needles are fixedly connected through;

a retraction unit: the retraction unit is arranged at the outer edge of the baffle plate, the sheath at the end part of the puncture needle is removed, so that the puncture needle pierces into the vein, the sheath at the end part of the blood collection needle is removed, so that the blood collection needle pierces into the rubber plug of the vacuum blood collection tube, under the negative pressure of the vacuum blood collection tube, the blood automatically flows into the vacuum blood collection tube, after the blood collection is finished, the buttons at the two ends of the sleeve are respectively pressed, the pin is pressed towards the inside of the sleeve by the buttons, the pin is separated from the inner wall of the sleeve, the baffle loses the connection effect with the inner arc surface of the sleeve, the baffle slides towards the inside of the sleeve under the elastic force effect of the compression spring, so that the puncture needle and the blood collection needle are driven to slide towards the inside of the sleeve, and then the puncture needle after using and blood collection needle are collected in the inside of sleeve, avoid the puncture needle to stab medical staff and appear cross infection, play the guard action, can prevent puncture needle and blood collection needle from exposing in the external world and causing the pollution simultaneously again.

Furthermore, the retraction unit comprises an extension spring, a pin and a button, one end of the extension spring is fixedly connected to one side of the groove close to the center of the baffle, the pin is arranged in the groove, the inner side end of the pin is fixedly connected with the other end of the extension spring, the outer side end of the pin extends into a convex through hole arranged in the sleeve, the button is sleeved in a convex hole in the sleeve, the outer side end of the button extends to the outer side of the cambered surface of the sleeve, the radius of the inner side end of the button is larger than that of the outer side end, the button is arranged on the outer side of the end of the pin, the button is pressed down to press the pin towards the inner part of the sleeve, so that the pin is separated from the inner wall of the sleeve, the baffle loses the connection effect with the inner cambered surface of the sleeve, the baffle slides towards the inner part of the sleeve under the elastic action of the compression, thereby playing the roles of protection and pollution prevention.

Furthermore, the puncture needle and the blood collection needle are respectively sleeved with two protective sleeves, and the protective sleeves protect and seal the puncture needle and the blood collection needle.

Further, still include the boss, boss fixed connection is in the telescopic both ends outside, and the sheath is close to sleeve center one end and cup joints in the lateral surface of boss, prevents the sheath landing, plays secondary seal's effect.

Furthermore, the sleeve is made of transparent PP materials, so that the blood sampling condition inside the sleeve can be observed conveniently.

Compared with the prior art, the beneficial effects of the utility model are that: this blood taking needle of can retracting voluntarily has following benefit:

1. remove the sheath of puncture needle tip, make the pjncture needle pierce vein, remove the sheath of blood collection needle tip, make the blood collection needle pierce the inside plug of vacuum blood collection tube, under the negative pressure effect of vacuum blood collection tube, blood flows into the inside of vacuum blood collection tube by oneself, after the blood sampling is accomplished, press the button at sleeve both ends respectively, the button is pressed the round pin post to the sleeve is inside, make the round pin post break away from telescopic inner wall, baffle and telescopic intrados lose the connection effect, the baffle slides to the sleeve is inside under compression spring's elasticity effect, thereby drive pjncture needle and blood collection needle and slide to the sleeve is inside, and then the pjncture needle after will using and blood collection needle income telescopic inside, avoid the pjncture needle to sting medical staff and appear cross infection, play the guard action, can prevent simultaneously that pjncture needle and blood collection needle from exposing and causing the pollution in the external.

Drawings

FIG. 1 is a schematic sectional plan view of the present invention;

fig. 2 is an enlarged schematic view of the a position of the present invention.

In the figure: 1 sleeve, 2 sheaths, 3 puncture needles, 4 blood collection hoses, 5 baffles, 6 blood collection needles, 7 compression springs, 8 bosses, 9 retraction units, 91 extension springs, 92 pins, 93 buttons and 10 grooves.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: an automatically retractable blood lancet includes a sleeve 1 and a retraction unit 9;

sleeve 1: the equal fixedly connected with compression spring 7 of sleeve 1's both ends medial surface, sleeve 1 is transparent PP material sleeve, be convenient for observe the 1 inside blood sampling condition of sleeve, compression spring 7 keeps away from one end fixedly connected with baffle 5 of 1 end of sleeve, the outer edge middle part of baffle 5 is provided with recess 10, 5 middle part fixedly connected with pjncture needle 3 of baffle 5 of upper end, pjncture needle 3 passes the through-hole that 1 upper end of sleeve set up, pjncture needle 3 is used for the puncture, 5 middle part fixedly connected with blood collection needle 6 of baffle 5 of lower extreme, blood collection needle 6 passes the through-hole that 1 lower extreme of sleeve set up, blood collection needle 6 is used for puncturing the plug of vacuum test tube, make blood flow in the inside of vacuum test tube, pjncture needle 3 and the one end that 1 end of sleeve.

The retracting unit 9: the retraction unit 9 comprises an extension spring 91, a pin 92 and a button 93, one end of the extension spring 91 is fixedly connected to one side of the groove 10 close to the center of the baffle 5, the pin 92 is arranged inside the groove 10, the inner end of the pin 92 is fixedly connected with the other end of the extension spring 91, the outer end of the pin 92 extends into a convex through hole arranged inside the sleeve 1, the button 93 is sleeved in a convex hole arranged inside the sleeve 1, the outer end of the button 93 extends to the outer side of the cambered surface of the sleeve 1, the radius of the inner end of the button 93 is larger than that of the outer end, the button 93 is arranged outside the end of the pin 92, the button 93 is pressed, the pin 92 is pressed towards the inside of the sleeve 1 by the button 93, the pin 92 is separated from the inner wall of the sleeve 1, the baffle 5 is not connected with the inner cambered surface of the sleeve 1, and the baffle 5 slides towards the inside of the sleeve, thereby drive pjncture needle 3 and blood collection needle 6 and slide to the sleeve 1 inside, and then with pjncture needle 3 and blood collection needle 6 income sleeve 1's inside after the use inside, play the effect of protection medical personnel and prevent cross infection.

Wherein: still include sheath 2 and boss 8, sheath 2 is two, and two sheaths 2 cup joint respectively in pjncture needle 3 and the outside of blood collection needle 6, and sheath 2 plays protection and sealed effect to pjncture needle 3 and

blood collection needle

6, and 8 fixed connection of boss are in the both ends outside of sleeve 1, and sheath 2 is close to sleeve 1 central one end and cup joints in the lateral surface of boss 8, prevents 2 landing of sheath, plays the effect of secondary seal.

When in use: remove the sheath 2 of 3 tip of pjncture needle, make pjncture needle 3 pierce vein, remove the sheath 2 of 6 tip of blood collection needle, make blood collection needle 6 pierce the plug inside of vacuum test tube, under the negative pressure effect of vacuum test tube, blood flows into the inside of vacuum test tube by oneself, after the blood sampling is accomplished, press the button 93 at sleeve 1 both ends respectively, button 93 presses round pin 92 to sleeve 1 is inside, make round pin 92 break away from the inner wall of sleeve 1, baffle 5 loses the connection effect with the intrados of sleeve 1, baffle 5 slides to sleeve 1 is inside under compression spring's 7 elasticity effect, thereby drive pjncture needle 3 and blood collection needle 6 and slide to sleeve 1 is inside, and then will use pjncture needle 3 and blood collection needle 6 income sleeve 1's inside, play the effect of protecting medical personnel and preventing cross infection.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An automatically retractable blood taking needle, which is characterized in that: comprises a sleeve (1) and a retraction unit (9);

sleeve (1): the inner side surfaces of two ends of the sleeve (1) are fixedly connected with compression springs (7), one ends, far away from the end head of the sleeve (1), of the compression springs (7) are fixedly connected with baffle plates (5), the middle of the outer edges of the baffle plates (5) is provided with grooves (10), the middle of the baffle plate (5) at the upper end is fixedly connected with puncture needles (3), the puncture needles (3) penetrate through holes formed in the upper end of the sleeve (1), the middle of the baffle plate (5) at the lower end is fixedly connected with blood collection needles (6), the blood collection needles (6) penetrate through holes formed in the lower end of the sleeve (1), and one ends, far away from the end head of the sleeve (1), of the puncture needles (3) and the;

retraction unit (9): the retraction unit (9) is arranged on the outer edge of the baffle (5).

2. An automatically retractable blood lancet according to claim 1, characterized in that: retraction unit (9) includes extension spring (91), round pin post (92) and button (93), the one end fixed connection of extension spring (91) is close to the one side at baffle (5) center in recess (10), round pin post (92) set up inside recess (10), the inboard end of round pin post (92) and extension spring (91) other end fixed connection, and the outside end of round pin post (92) extends to in the convex through-hole of sleeve (1) inside setting, in button (93) cup joints the convex type hole of sleeve (1) inside, the outside end of button (93) extends to the cambered surface outside of sleeve (1), the inboard end radius of button (93) is greater than the radius of outside end, button (93) set up in the end outside of round pin post (92).

3. An automatically retractable blood lancet according to claim 1, characterized in that: the puncture needle is characterized by further comprising two sheaths (2), wherein the two sheaths (2) are respectively sleeved outside the puncture needle (3) and the blood collection needle (6).

4. An automatically retractable blood lancet according to claim 3, characterized in that: still include boss (8), boss (8) fixed connection is in the both ends outside of sleeve (1), and sheath (2) are close to sleeve (1) center one end and cup joint in the lateral surface of boss (8).

5. An automatically retractable blood lancet according to claim 1, characterized in that: the sleeve (1) is made of transparent PP materials.