CN213642137U

CN213642137U - Serum collection injector

Info

Publication number: CN213642137U
Application number: CN202022345110.5U
Authority: CN
Inventors: 刘霞; 王艳; 杨晓伟
Original assignee: GUIZHOU PROVINCIAL CENTER FOR ANIMAL DISEASE PREVENTION AND CONTROL; Southwest University; Technical Center For Animal Plant and Food Inspection and Quarantine of Shanghai Customs
Current assignee: GUIZHOU PROVINCIAL CENTER FOR ANIMAL DISEASE PREVENTION AND CONTROL; Southwest University; Technical Center For Animal Plant and Food Inspection and Quarantine of Shanghai Customs
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-07-09
Anticipated expiration: 2030-10-20

Abstract

The utility model discloses a serum collecting injector, which comprises a needle cylinder part, a push rod part and a needle head part; the push rod part is arranged in the syringe part, and the needle head part is arranged at the top end of the syringe part; the opening end of the needle cylinder part is provided with a stabilizing ring which is annularly arranged along the outer pipe wall of the needle cylinder part; the push rod part comprises a piston head, a connecting plate, a push rod and a connector; the size of the piston head is matched with the inner diameter of the needle cylinder part; the push rod is detachably connected with the piston head; the connecting plate is arranged on the piston head at a position close to the open end of the needle cylinder part, the connecting plate is fixedly connected with the piston head, the connecting head is arranged at the central position of the connecting plate, an internal thread matched with the push rod is arranged on the connecting head, an external thread is arranged at the end part of the push rod, and the connecting head is in threaded fit with the push rod; according to the scheme, blood does not need to be transferred when the serum is collected, operation steps are reduced, the possibility of blood pollution is reduced, and the quality of serum collection is guaranteed.

Description

Serum collection injector

Technical Field

The utility model belongs to the technical field of serum, blood collection equipment and specifically relates to a serum collection syringe.

Background

Serum refers to a yellowish transparent liquid separated after the plasma has been coagulated to remove fibrinogen and certain coagulation factors or to plasma from which fibrinogen has been removed.

In the prior art, blood is collected mainly through a medical injector, and then the collected blood is injected into a centrifuge tube and separated by a centrifugal method to obtain serum;

in the prior art, multiple steps are needed for obtaining serum, blood needs to be transferred for multiple times, disease transmission is easily caused in the transfer process, or pollution is introduced to the blood by the external environment, and the serum collection is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at: aiming at the problems, the serum collection injector is provided, and the problems that in the prior art, serum needs to be obtained by adopting a plurality of steps, blood needs to be transferred for a plurality of times, diseases are easily spread in the transfer process, or the external environment causes pollution to the blood are solved.

The utility model discloses a realize through following scheme:

a serum collecting injector comprises a needle barrel part, a push rod part and a needle head part; the push rod part is arranged in the syringe part, and the needle head part is arranged at the top end of the syringe part; the opening end of the needle cylinder part is provided with a stabilizing ring which is annularly arranged along the outer pipe wall of the needle cylinder part; the push rod part comprises a piston head, a connecting plate, a push rod and a connector; the piston head is matched with the inner diameter of the needle cylinder part in size; the push rod is detachably connected with the piston head.

Preferably, the connecting plate is arranged on the piston head at a position close to the open end of the needle cylinder part, the connecting plate is fixedly connected with the piston head, the connector is arranged at the central position of the connecting plate, an internal thread matched with the push rod is arranged on the connector, an external thread is arranged at the end part of the push rod, and the connector is in threaded fit with the push rod.

Preferably, the web has a diameter less than the diameter of the piston head.

Preferably, a sealing ring is arranged at the bottom end of the inner wall of the needle cylinder part, the thickness of the sealing ring is not more than the diameter difference between the connecting plate and the piston head, and the height of the sealing ring is not less than that of the connecting head.

Preferably, a rubber plug is arranged on the needle head part and is connected with the needle head part through a connecting piece.

Preferably, the stabilizing ring comprises a weight part and a rubber part, the rubber part is arranged at a position close to the end face of the opening of the needle cylinder part, and the weight part is arranged on the rubber part.

Preferably, the needle cylinder part is provided with a scale on the tube wall.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. according to the scheme, blood does not need to be transferred when the serum is collected, operation steps are reduced, the possibility of blood pollution is reduced, and the quality of serum collection is guaranteed.

2. The scheme reduces the overall cost of the injector by the aid of the detachable reusable push rod structure, the piston head is used for primary sealing, and the piston head and the sealing ring are used for secondary sealing; the 2 seals ensure that the syringe portion does not leak when it is used as a container.

3. In order to ensure the stability of the needle cylinder part when used as a container, the stabilizing ring comprises a counterweight part and a rubber part, the rubber part is arranged at a position close to the end surface of the opening of the needle cylinder part, and the counterweight part is arranged on the rubber part; the counterweight part can be made of metal materials, the weight of the opening end of the needle cylinder is increased through the counterweight part, the stability of the needle cylinder is guaranteed, the friction between the needle cylinder part and the ground when the needle cylinder part serves as a container is increased through the rubber part, and the stability of the needle cylinder is guaranteed.

Drawings

FIG. 1 is a schematic side view of the whole body of the present invention;

FIG. 2 is a schematic side view of the needle portion of the present invention as a container;

FIG. 3 is a schematic side view of the needle cylinder of the present invention in a vertical seal;

description of the drawings: 1. a needle cylinder part; 2. a push rod part; 3. a needle head section; 11. a rubber stopper; 12. A seal ring; 13. a counterweight portion; 14. a rubber part; 21. a piston head; 22. a connecting plate; 23. A push rod; 24. a connector; 25. and (4) pushing the block.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.

Example 1

As shown in fig. 1 to 3, a serum collection syringe comprises a syringe barrel part 1, a push rod part 2 and a needle head part 3; the needle cylinder part 1 is integrally of a cylindrical structure with one open end, the push rod part 2 is arranged in the needle cylinder part 1, and the needle head part 3 is arranged at the top end position of the needle cylinder part 1; the opening end of the needle cylinder part 1 is provided with a stabilizing ring which is annularly arranged along the tube wall of the needle cylinder part 1;

the push rod part 2 comprises a piston head 21, a connecting plate 22, a push rod 23 and a connecting head 24; the size of the piston head 21 is matched with the inner diameter of the needle cylinder part 1, the piston head 21 seals the inner wall of the needle cylinder part 1, and when the piston head 21 is pushed; negative pressure or positive pressure is generated to realize the suction of blood;

the connecting plate 22 is arranged on the piston head 21 and close to the opening end of the needle cylinder part 1, the connecting plate 22 is fixedly connected with the piston head 21, the connecting head 24 is arranged at the center of the connecting plate 22, an internal thread matched with the push rod 23 is arranged on the connecting head 24, an external thread is arranged at the end part of the push rod 23, and the connecting head 24 is in threaded fit with the push rod 23;

the lower end of the push rod 23 is provided with a push block 25, and the piston head 21 can be pushed rapidly and laborsavingly through the push block 25;

the diameter of the connecting plate 22 is smaller than that of the piston head 21; the connecting plate 22 is made of metal, and the metal is not easy to seal with the inner wall of the needle cylinder part 1, so that the connecting plate 22 is smaller than the piston head 21 and is extruded and sealed with the inner diameter machine of the needle cylinder part 1 through the rubber of the piston head 21; the metal connecting plate 22 has sufficient strength to connect the push rod 23 and the connector 24.

Based on the structure, when in use, the piston head 21 is pushed to move by the push rod 23, when the blood volume is pumped to the target volume, the push rod 23 is spirally detached, so that the needle cylinder part 1 forms a single container, and the needle cylinder part 1 can be stably placed on a centrifuge for static centrifugation due to the action of the stabilizing ring. The disassembled push rod 23 can be repeatedly used after the disinfection treatment, and the use cost of the whole collection is reduced.

Needle head portion 3 is used for cooperating the use with external needle point, set up rubber stopper 11 on the needle head portion 3, rubber stopper 11 is connected with needle head portion 3 through the connecting piece, rubber stopper 11 can carry out the complete extrusion sealing with needle head portion 3, rubber stopper 11 is whole to be round platform shape structure, when needs use syringe section of thick bamboo portion 1 as an independent container, seals through rubber stopper 11, reduces blood and external contact, has guaranteed blood and external mutual contamination.

The bottom end of the inner wall of the needle cylinder part 1 is provided with a sealing ring 12, the thickness of the sealing ring 12 is not more than the diameter difference between the connecting plate 22 and the piston head 21, and the height of the sealing ring 12 is not less than the height of the connecting head 24;

based on the structure, when in use, blood is collected through the needle cylinder part 1 and the push rod part 2, after the blood is collected, the lower end of the piston head 21 along the length direction of the needle cylinder is moved to the lowest end position, and the sealing ring 12 is contacted with the bottom end surface of the piston head 21 to form secondary sealing; because the height of the sealing ring 12 is higher than that of the connecting head 24, when the bottom end face of the piston head 21 contacts with the sealing ring 12, the connecting head 24 does not protrude out of the position of the bottom end face of the sealing ring 12, and the sealing ring 12 plays a role in sealing and limiting the piston head 21.

In this case, the collected blood is located at the bottom end of the needle cylinder 1, and the center of gravity is low, which is more advantageous for the stability of the needle cylinder 1 as a container.

In other embodiments, in order to ensure the stability of the needle cylinder part 1 as a container, the stabilizing ring comprises a weight part 13 and a rubber part 14, the rubber part 14 is arranged at a position close to the opening end surface of the needle cylinder part 1, and the weight part 13 is arranged on the rubber part 14; the weight 13 can be made of metal material, the weight of the open end of the needle cylinder is increased through the weight 13 to ensure the stability, and the friction between the needle cylinder part 1 and the ground when the needle cylinder part is used as a container is increased through the rubber part 14 to ensure the stability.

According to the scheme, the overall cost of the injector is reduced by the structure of the detachable and reusable push rod 23, the piston head 21 is adopted for primary sealing, and the piston head 21 and the sealing ring 12 are used for secondary sealing; the 2 seals ensure that the barrel portion 1 does not leak when it is used as a container.

This device need not shift blood when gathering serum, has reduced the operating procedure to reduce the pollution possibility of blood, guaranteed the quality that serum was gathered.

In other embodiments, the needle cylinder part 1 is provided with scales on the tube wall. Blood is accurately collected through scales.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A serum collection syringe, characterized in that: comprises a needle cylinder part (1), a push rod (23) part (2) and a needle head part (3); the push rod (23) part (2) is arranged in the needle cylinder part (1), and the needle head part (3) is arranged at the top end position of the needle cylinder part (1); the opening end of the needle cylinder part (1) is provided with a stabilizing ring which is annularly arranged along the outer pipe wall of the needle cylinder part (1); the push rod (23) part (2) comprises a piston head (21), a connecting plate (22), a push rod (23) and a connector (24); the size of the piston head (21) is matched with the inner diameter of the needle cylinder part (1); the push rod (23) is detachably connected with the piston head (21).

2. A serum collection syringe according to claim 1, wherein: connecting plate (22) set up the position that is close to needle section of thick bamboo portion (1) open end on piston head (21), connecting plate (22) and piston head (21) fixed connection, connector (24) set up in connecting plate (22) central point and put, be provided with on connector (24) with push rod (23) assorted internal thread, the tip of push rod (23) is provided with the external screw thread, connector (24) and push rod (23) screw-thread fit.

3. A serum collection syringe according to claim 2, wherein: the diameter of the connecting plate (22) is smaller than that of the piston head (21).

4. A serum collection syringe according to claim 3, wherein: the bottom end position of the inner wall of the needle cylinder part (1) is provided with a sealing ring (12), the thickness of the sealing ring (12) is not larger than the diameter difference between the connecting plate (22) and the piston head (21), and the height of the sealing ring (12) is not smaller than that of the connecting head (24).

5. A serum collection syringe according to claim 1 or 2 or 3 or 4, wherein: the needle head part (3) is provided with a rubber plug (11), and the rubber plug (11) is connected with the needle head part (3) through a connecting piece.

6. A serum collection syringe according to claim 1 or 2 or 3 or 4, wherein: the stabilizing ring comprises a counterweight part (13) and a rubber part (14), the rubber part (14) is arranged at a position close to the opening end face of the needle cylinder part (1), and the counterweight part (13) is arranged on the rubber part (14).

7. A serum collection syringe according to claim 1 or 2 or 3 or 4, wherein: scales are arranged on the tube wall of the needle tube part (1).