CN213345673U

CN213345673U - Prevent hemolytic device during vein negative pressure blood sampling

Info

Publication number: CN213345673U
Application number: CN202021738865.5U
Authority: CN
Inventors: 马高茜; 胡志荣; 刘慧敏
Original assignee: Henan Childrens Hospital Zhengzhou Childrens Hospital
Current assignee: Henan Childrens Hospital Zhengzhou Childrens Hospital
Priority date: 2020-08-19
Filing date: 2020-08-19
Publication date: 2021-06-04
Anticipated expiration: 2030-08-19

Abstract

The utility model discloses a device for preventing hemolysis when vein negative pressure blood sampling, which relates to the technical field of medical apparatus and instruments, comprising a negative pressure tube cover and a vein blood sampling needle head, wherein the bottom end of the negative pressure tube cover is fixedly connected with a negative pressure tube body, the outer side of the negative pressure tube body is sleeved with a rubber shell, the bottom end of the rubber shell is fixedly connected with a shell base, and the top end of the negative pressure tube cover is provided with a round through hole, the utility model discloses a sealed rubber slide plate which is slidably connected in a square counter bore and a pressure pointer which is fixedly connected with the top end of the sealed rubber slide plate, so that the pressure condition in the tube can be visually observed, the vein blood sampling tube with partial insufficient negative pressure or gas leakage can be conveniently screened out before use, the change of the position can be indicated by the pressure pointer during use, whether the collected vein blood is enough or not can be conveniently observed, there is still some hemolysis due to negative pressure in the tube.

Description

Prevent hemolytic device during vein negative pressure blood sampling

Technical Field

The utility model relates to the technical field of medical equipment, specifically be a prevent hemolysis device during vein negative pressure blood sampling.

Background

Blood sampling is a more extensive operating technique in clinical examination, and can take place blood sample hemolysis in clinic usually, can cause the destruction to the erythrocyte in the blood sample, and influence serum, the plasma chemical composition condition, then can cause great influence to the accuracy of blood test result, serious person can delay diagnosis and treatment, threaten patient's life and health, vacuum vein hemostix is vacuum negative pressure pipe, the too big or undersize of negative pressure all can cause the hemolysis. The negative pressure is relatively large, the speed of blood flowing into the bottom of the negative pressure tube is too fast and violent, so that red blood cells collide with each other, the red blood cells are broken, and the specimen is hemolyzed. If the negative pressure is insufficient, air leakage or the dosage of the anticoagulant is insufficient, the blood return is slow, the blood flow is interrupted and bubbles are mixed to cause hemolysis. Insufficient suction still causes a vacuum in the tube, resulting in hemolysis.

The venous blood collection system who discloses in chinese utility model patent application laid-open specification CN 209107370U, including the heparin tube, though this utility model has improved blood sampling efficiency to a certain extent, possesses the effect of the quality of guaranteeing to gather the blood sample to a certain extent, but this utility model can not carry out better protection to the blood sample that has gathered, can't avoid because vibrate, the temperature is low excessively or intraductal pressure environment is incorrect and lead to the blood sample of gathering to take place the hemolysis, then reduce the quality of gathering the blood sample light, make the blood sample scrap by weight, need gather again.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a prevent hemolytic device during vein negative pressure blood sampling to prior art not enough, the problem of proposing in the above-mentioned background art has been solved.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: including negative pressure tube cap and vein blood sampling syringe needle, negative pressure tube cap bottom end fixedly connected with negative pressure body the rubber casing has been cup jointed to the negative pressure tube body outside, rubber casing bottom end fixedly connected with shell base, negative pressure tube cap top is provided with circular through-hole, circular through-hole inner wall fixedly connected with metal paper seals membrane and elastic rubber piece, negative pressure tube cap top is provided with square counter bore, the sealed lid of square counter bore inner wall fixedly connected with, the sealed glass pressure dial plate of lid inner wall fixedly connected with, vein blood sampling syringe needle bottom fixedly connected with pipe, vein blood sampling syringe needle passes through pipe fixedly connected with water conservancy diversion syringe needle.

Optionally, the inner wall of the square counterbore is slidably connected with a sealing rubber sliding plate, the sealing rubber sliding plate is fixedly connected with the square counterbore through a spring, and the top end of the sealing rubber sliding plate is fixedly connected with a pressure pointer.

Optionally, the inner bottom wall of the square counter bore is provided with a pipe internal pressure constant pressure hole, and the pipe internal pressure constant pressure hole is formed in the end, close to the circular through hole, of the inner bottom wall of the square counter bore.

Optionally, the outer side surface of the rubber housing is provided with six endoscopic holes, and the six endoscopic holes are circumferentially and uniformly distributed on the outer side surface of the rubber housing.

Optionally, the bottom end of the venous blood sampling needle head is fixedly connected with the catheter through a needle head fixing plate, and the top end of the diversion needle head is fixedly connected with the catheter through a limiting plate.

Optionally, sealed lid top is provided with atmospheric pressure constant voltage hole, atmospheric pressure constant voltage hole set up in sealed lid top is close to the one end of negative pressure tube cap lateral surface.

(III) advantageous effects

The utility model provides a prevent hemolysis device during vein negative pressure blood sampling possesses following beneficial effect:

1. this prevent hemolysis device during vein negative pressure blood sampling, through setting up sliding connection in the sealing rubber slide on square counter bore, and fixed connection is in the pressure pointer on secret sealing rubber slide top, make intraductal pressure condition can be observed by audio-visual, be convenient for in time screen out the vein blood sampling pipe that partial negative pressure is not enough or leak gas before the use, also can instruct the change of position through the pressure pointer in the use, be convenient for observe whether enough volume of vein blood gathered, avoided to a certain extent because the negative pressure is not enough or the volume of taking a blood sample is not enough, still have the hemolysis phenomenon that certain negative pressure leads to intraductally.

2. This prevent hemolytic device during vein negative pressure blood sampling through setting up rubber housing and shell base, has avoided gathering good blood sample and has received the hemolytic phenomenon that vibrates and lead to in keeping the transportation, simultaneously, when the blood sample is taken out from the incubator, this rubber housing has also played the heat preservation effect, has avoided the hemolytic phenomenon because the blood sample temperature is less than internal ambient temperature and leads to a certain extent.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of the negative pressure tube body of the present invention;

FIG. 2 is a schematic sectional view of the front view of the present invention;

FIG. 3 is a schematic view of the three-dimensional structure of the venous blood collection needle of the present invention;

fig. 4 is a schematic structural diagram of a portion a in fig. 2 according to the present invention.

In the figure: 1. a negative pressure pipe cover; 2. sealing the film with metal paper; 3. an elastic rubber block; 4. a sealing cover; 5. a glass pressure dial; 6. a pressure pointer; 7. sealing the rubber slide plate; 8. an atmospheric pressure constant pressure hole; 9. a spring; 10. a pipe internal pressure constant pressure hole; 11. a negative pressure pipe body; 12. a rubber housing; an inner peephole; 14. a housing base; 15. a venous blood collection needle; 16. a conduit; 17. a flow guide needle head; 18. a circular through hole; 19. a square counter bore; 20. a needle head fixing plate; 21. and a limiting plate.

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.

Referring to fig. 1 to 4, the present invention provides a technical solution: a device for preventing hemolysis during venous negative pressure blood sampling comprises a negative pressure tube cover 1 and a venous blood sampling needle 15, wherein the bottom end of the negative pressure tube cover 1 is fixedly connected with a negative pressure tube body 11, the outer side of the negative pressure tube body 11 is sleeved with a rubber shell 12, the outer side surface of the rubber shell 12 is provided with six inner peepholes 13, the six inner peepholes 13 are circumferentially and uniformly distributed on the outer side surface of the rubber shell 12, the bottom end of the rubber shell 12 is fixedly connected with a shell base 14, the top end of the negative pressure tube cover 1 is provided with a circular through hole 18, the inner wall of the circular through hole 18 is fixedly connected with a metal paper sealing membrane 2 and an elastic rubber block 3, the top end of the negative pressure tube cover 1 is provided with a square counter bore 19, the inner wall of the square counter bore 19 is slidably connected with a sealing rubber slide plate 7, the sealing rubber slide plate 7 is fixedly connected with the square, the inner wall of the square counter bore 19 is provided with an inner pressure constant pressure hole 10, the inner pressure constant pressure hole 10 is arranged at one end, close to the circular through hole 18, of the inner wall of the square counter bore 19, the inner wall of the sealing cover 4 is fixedly connected with a glass pressure dial 5, the bottom end of the venous blood collection needle head 15 is fixedly connected with a catheter 16, the bottom end of the venous blood collection needle head 15 is fixedly connected with the catheter 16 through a needle head fixing plate 20, the top end of the flow guide needle head 17 is fixedly connected with the catheter 16 through a limiting plate 21, and the venous blood collection.

When the device is used, the indicating position of the pressure pointer 6 is observed firstly, if the negative pressure in the negative pressure pipe body 11 is insufficient or air leakage occurs, the blood sampling pipe needs to be replaced immediately, after the negative pressure in the negative pressure pipe body 11 is confirmed to be sufficient, the collection point is sterilized fully, after the sterilizing liquid is volatilized, the vein blood sampling needle 15 is punctured into the vein, the metal paper sealing film 2 and the elastic rubber block 3 at the top end of the negative pressure pipe cover 1 are punctured by the flow guide needle 17 in time before blood return, the vein blood enters the negative pressure pipe body 11, the vein blood sample flows into the negative pressure pipe body 11 through the conduit 16 under the action of the pressure difference at two sides, the internal pressure of the negative pressure pipe body 11 is increased gradually, the sealing rubber sliding plate 7 slides gradually under the action of the spring 9 and drives the pressure pointer 6 to slide, after collection is finished, the pressure pointer 6 slides to the limit position and is observed by medical staff, and, when the collected blood sample is put into the incubator for storage, the blood sample in the tube is not subjected to too violent impact and vibration under the protection of the rubber shell 12 and the shell base 14, so that hemolysis is caused, when the blood sample is taken out for detection, the rubber shell 12 also plays a certain heat preservation role, and the hemolysis phenomenon caused by too large temperature difference change of the external environment or too low temperature in the tube is avoided.

In conclusion, the utility model is provided with the sealing rubber slide plate 7 which is connected in the square counter bore 19 in a sliding way, and the pressure pointer 6 fixedly connected with the top end of the secret sealing rubber slide plate, so that the pressure condition in the tube can be visually observed, partial venous blood sampling tubes with insufficient negative pressure or air leakage can be conveniently screened out in time before use, the change of the position can be indicated by the pressure pointer 6 during use, whether the collected venous blood is enough or not can be conveniently observed, and the hemolysis phenomenon caused by certain negative pressure in the tube due to insufficient negative pressure or insufficient blood sampling amount can be avoided to a certain extent, by arranging the rubber shell 12 and the shell base 14, the hemolysis phenomenon caused by the shock of the collected blood sample in the process of storage and transportation is avoided, meanwhile, when the blood sample is taken out from the incubator, the rubber shell 12 also plays a role in heat preservation, and the phenomenon of hemolysis caused by the fact that the temperature of the blood sample is lower than the internal environment temperature is avoided to a certain extent.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a prevent hemolytic device during vein negative pressure blood sampling, includes negative pressure tube lid (1) and vein blood sampling syringe needle (15), its characterized in that: the negative pressure tube cap (1) bottom fixedly connected with negative pressure body (11), rubber casing (12) have been cup jointed in the negative pressure body (11) outside, rubber casing (12) bottom fixedly connected with shell base (14), negative pressure tube cap (1) top is provided with circular through-hole (18), circular through-hole (18) inner wall fixedly connected with metal paper seals membrane (2) and elastic rubber piece (3), negative pressure tube cap (1) top is provided with square counter bore (19), square counter bore (19) inner wall fixedly connected with seals lid (4), sealed lid (4) inner wall fixedly connected with glass pressure dial plate (5), vein blood sampling syringe needle (15) bottom fixedly connected with pipe (16), vein blood sampling syringe needle (15) pass through pipe (16) fixedly connected with water conservancy diversion syringe needle (17).

2. The apparatus for preventing hemolysis in venous negative pressure blood collection according to claim 1, wherein: the inner wall of the square counter bore (19) is connected with a sealing rubber sliding plate (7) in a sliding mode, the sealing rubber sliding plate (7) is fixedly connected with the square counter bore (19) through a spring (9), and the top end of the sealing rubber sliding plate (7) is fixedly connected with a pressure pointer (6).

3. The apparatus for preventing hemolysis in venous negative pressure blood collection according to claim 1, wherein: the inner bottom wall of the square counter bore (19) is provided with a pipe internal pressure constant pressure hole (10), and the pipe internal pressure constant pressure hole (10) is arranged at one end, close to the circular through hole (18), of the inner bottom wall of the square counter bore (19).

4. The apparatus for preventing hemolysis in venous negative pressure blood collection according to claim 1, wherein: peep holes (13) are formed in the outer side face of the rubber shell (12), the number of the peep holes (13) is six, and the six peep holes (13) are evenly distributed on the outer side face of the rubber shell (12) in the circumferential direction.

5. The apparatus for preventing hemolysis in venous negative pressure blood collection according to claim 1, wherein: the bottom end of the venous blood sampling needle head (15) is fixedly connected with the catheter (16) through a needle head fixing plate (20), and the top end of the flow guide needle head (17) is fixedly connected with the catheter (16) through a limiting plate (21).

6. The apparatus for preventing hemolysis in venous negative pressure blood collection according to claim 1, wherein: sealed lid (4) top is provided with atmospheric pressure constant voltage hole (8), atmospheric pressure constant voltage hole (8) set up in sealed lid (4) top is close to the one end of negative pressure tube cap (1) lateral surface.