CN215839082U

CN215839082U - Vacuum blood collection tube

Info

Publication number: CN215839082U
Application number: CN202121772303.7U
Authority: CN
Inventors: 李骤; 黎洪棉; 卢冠铭; 黄东琳; 宁艳
Original assignee: First Peoples Hospital of Nanning
Current assignee: First Peoples Hospital of Nanning
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-18
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to a vacuum blood collection tube, which comprises a first tube body, a second tube body and a sealing rubber cap, wherein a cavity is arranged in the first tube body along the length of the first tube body, the cavity penetrates through the first tube body, one end of the first tube body is connected with the sealing rubber cap for sealing the cavity, and the other end of the first tube body is inserted into the second tube body and can slide along the length direction of the second tube body; the second pipe body is internally provided with a partition board which divides the second pipe body into a sliding cavity and a bottom bin, the partition board is provided with a plug and a through hole, and the plug can be inserted into the cavity. The utility model adopts the first tube body and the second tube body to realize the separation of serum protein and red blood cells, and ensures that the two parts of liquid of the first tube body and the second tube body are difficult to mix, thereby being capable of conveniently and timely extracting the serum protein in the first tube body for further inspection.

Description

Vacuum blood collection tube

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a vacuum blood collection tube.

Background

In recent years, vacuum blood collection tubes have replaced disposable syringes that are used in clinical practice in early stages due to their characteristics of easy operation, high safety, and the like, and have become the most widely used blood collection tool in clinical tests.

However, the vacuum blood collection tube for collecting blood is firstly put into the centrifuge to rapidly separate serum protein and red blood cells, however, when the tube body may shake, incline and tilt after the vacuum blood collection tube is taken out from the centrifuge, mixing of serum protein and red blood cells is easily caused, so that further inspection cannot be performed, and therefore, re-centrifugal separation is needed, and the inspection period is further prolonged.

Therefore, it is necessary to design a vacuum blood collection tube which can effectively solve the problem that the existing vacuum blood collection tube is easy to restore to a mixed state after separating blood into serum protein and red blood cells.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vacuum blood collection tube, which can effectively solve the problem that the existing vacuum blood collection tube is easy to recover to a mixed state after separating blood into serum protein and red blood cells.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a vacuum blood collection tube comprises a first tube body, a second tube body and a sealing rubber cap, wherein a cavity is formed in the first tube body along the length of the first tube body, the cavity penetrates through the first tube body, one end of the first tube body is connected with the sealing rubber cap used for sealing the cavity, and the other end of the first tube body is inserted into the second tube body and can slide along the length direction of the second tube body; the second pipe body is internally provided with a partition board which divides the second pipe body into a sliding cavity and a bottom bin, the partition board is provided with a plug and a through hole, and the plug can be inserted into the cavity.

As a further improvement of the above technical solution:

the first tube body and the second tube body are made of transparent materials. Studies have shown that a large amount of white blood cells and platelets in plasma mainly accumulate at the boundary between serum proteins and the red blood cell layer, so in order to prevent the loss of platelets and white blood cells, a small amount of red blood cell layer should be left at the bottom when the gel is prepared; the transparent material can clearly penetrate through the bottom bin and fall off, and a small amount of erythrocyte layer is ensured to be left in the first tube body.

Furthermore, a necking is arranged at the middle lower part of the cavity, a groove is formed at the lower part of the necking, and a plug is inserted into the groove and sealed below the necking. By means of the necking, the speed of red blood cells falling into the bottom bin is reduced, and separation of serum protein and the red blood cells is facilitated.

Furthermore, a filtering membrane is arranged in the first pipe body and is positioned at the necking part. Avoid serum albumen to drop the end storehouse, lead to serum albumen's waste.

Furthermore, a sliding ring is sleeved at the lower part of the first pipe body, a baffle ring is arranged on the inner wall of the sliding cavity, and the sliding ring is blocked between the baffle ring and the partition plate; the outer wall of the sliding ring is provided with external threads, and the inner wall of the sliding cavity is provided with internal threads matched with the external threads. The slip ring blocks between fender ring and baffle, and first body and second body threaded connection avoid first body and second body to break away from at the blood centrifugal operation in-process.

Furthermore, the baffle ring is flush with the top surface of the second pipe body. Avoid keeping off the ring and forming the ladder with second body top surface, be not conform to the sanitary standard.

Furthermore, the outer wall of the first pipe body protrudes with a fixing ring, and after the plug is inserted into the groove, the fixing ring is attached to the baffle ring and is connected with the baffle ring through a bolt. Avoid first body rotatory for the second body, more effectively avoid first body and second body intercommunication in blood centrifugal operation in-process, influence the separation of serum protein and red blood cell after the rest.

The through holes are multiple, the plug is located in the center of the partition plate, and the through holes are uniformly arranged around the plug. The plug is located in the center of the baffle, which can more effectively seal the constriction.

And a semicircular groove is formed in the center of the sealing rubber cap. The blood taking needle of being convenient for is by semi-circular recess with in the first pipe body of blood injection, also makes things convenient for and directly takes the serum albumen in the first pipe body through the blood taking needle, more effectual prevention sample secondary pollution.

Compared with the prior art, the utility model has the advantages that:

the blood collection tube adopts the first tube body and the second tube body, the first tube body and the second tube body are isolated by utilizing the blockage, and blood exists in the first tube body. After the blood is separated into serum protein and red blood cells by a centrifugal machine, the serum protein and the red blood cells float above the red blood cells due to different self-gravity; the blocking is separated from the cavity, the red blood cells drop in the bottom bin due to the action of gravity, and after the red blood cells drop in the bottom bin, the blocking is inserted into the cavity, so that the separation of serum protein and the red blood cells is realized, and the two parts of liquid of the first tube body and the second tube body are difficult to mix, so that the serum protein in the first tube body can be conveniently and timely extracted for further inspection.

Drawings

FIG. 1 is a schematic diagram of a vacuum blood collection tube.

FIG. 2 is a sectional view of the vacuum blood collection tube.

Fig. 3 is a structural view of the second tube.

Fig. 4 is a structural view of the first tube.

Description of reference numerals:

1. a second tube body; 2. a first pipe body; 3. sealing the rubber cap; 4. a bolt; 6. a cavity; 11. a partition plate; 12. a sliding cavity; 13. a bottom bin; 14. blocking; 15. a slip ring; 16. a baffle ring; 17. a fixing ring; 18. a through hole; 31. a circular groove; 61. necking down; 62. and (4) a groove.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, there will now be described in detail, with reference to the accompanying drawings, a non-limiting detailed description of the present invention.

As shown in fig. 1 to 4, the vacuum blood collection tube of the present embodiment includes a first tube 2, a second tube 1 and a sealing rubber cap 3, wherein a cavity 6 is disposed in the first tube 2 along the length thereof, the cavity 6 penetrates through the first tube 2, one end of the first tube 2 is connected to the sealing rubber cap 3 for sealing the cavity 6, and the other end of the first tube 2 is inserted into the second tube 1 and can slide along the length direction of the second tube 1; a partition plate 11 for dividing the second pipe body 1 into a sliding cavity 12 and a bottom bin 13 is arranged in the second pipe body 1, a plug 14 and a through hole 18 are arranged on the partition plate 11, and the plug 14 can be inserted into the cavity 6. The cavity 6 is provided with a constriction 61 at its lower middle portion, the constriction 61 forms a recess 62 at its lower portion, and the plug 14 is inserted into the recess 62 and sealed under the constriction 61. A filter membrane is arranged in the first tube 2 and is positioned at the constriction 61. The through holes 18 are multiple, the plug 14 is positioned in the center of the partition plate 11, and the through holes 18 are uniformly arranged around the plug 14. The center of the sealing rubber cap 3 is provided with a semicircular groove 31.

Wherein, the lower part of the first tube body 2 is sleeved with a slip ring 15, the inner wall of the sliding cavity 12 is provided with a baffle ring 16, and the slip ring 15 is blocked between the baffle ring 16 and the clapboard 11; the outer wall of the sliding ring 15 is provided with an external thread, and the inner wall of the sliding cavity 12 is provided with an internal thread matched with the external thread. The stop ring 16 is flush with the top surface of the second tubular body 1. The outer wall of the first tube body 2 is protruded with a fixing ring 17, and after the plug 14 is inserted into the groove 62, the fixing ring 17 is attached to the baffle ring 16 and connected with the bolt 4.

For the use of this example, reference is made to the following steps:

first, the first tubular body 2 is rotated, and the plug 14 is inserted into the groove 62 and sealed below the constriction 61, thereby isolating the first tubular body 2 from the second tubular body 1. Next, blood is injected into the first tube 2 from the semicircular groove 31 by means of a syringe. And thirdly, separating the blood into serum protein and red blood cells by using a centrifugal machine, and after standing for a period of time, floating the serum protein above the red blood cells due to different self-gravity of the serum protein and the red blood cells. Then, the first tube 2 is rotated, the plug 14 is separated from the groove 62, the first tube 2 is communicated with the second tube 1, and the red blood cells fall off the bottom bin 13 due to the gravity. Finally, the first tubular body 2 is rotated, the plug 14 being inserted in the groove 62 and sealed under the constriction 61. Realize the separation of serum albumen and erythrocyte, guarantee that first body 2 and second body 1's two parts liquid is difficult to mix, therefore can conveniently, in time draw the further inspection of serum albumen in the first body 2.

Claims

1. A vacuum blood collection tube is characterized in that: the pipe joint comprises a first pipe body (2), a second pipe body (1) and a sealing rubber cap (3), wherein a cavity (6) is formed in the first pipe body (2) along the length of the first pipe body, the cavity (6) penetrates through the first pipe body (2), one end of the first pipe body (2) is connected with the sealing rubber cap (3) used for sealing the cavity (6), and the other end of the first pipe body (2) is inserted into the second pipe body (1) and can slide along the length direction of the second pipe body (1); a partition plate (11) which divides the second pipe body (1) into a sliding cavity (12) and a bottom bin (13) is arranged in the second pipe body, a plug (14) and a through hole (18) are arranged on the partition plate (11), and the plug (14) can be inserted into the cavity (6).

2. The evacuated blood collection tube of claim 1, wherein: the middle lower part of the cavity (6) is provided with a necking neck (61), the lower part of the necking neck (61) forms a groove (62), and the plug (14) is inserted into the groove (62) and sealed below the necking neck (61).

3. The evacuated blood collection tube of claim 2, wherein: a filtering membrane is arranged in the first pipe body (2), and the filtering membrane is positioned at the necking neck (61).

4. The evacuated blood collection tube of claim 3, wherein: a sliding ring (15) is sleeved at the lower part of the first pipe body (2), a baffle ring (16) is arranged on the inner wall of the sliding cavity (12), and the sliding ring (15) is blocked between the baffle ring (16) and the partition plate (11); the outer wall of the sliding ring (15) is provided with an external thread, and the inner wall of the sliding cavity (12) is provided with an internal thread matched with the external thread.

5. The evacuated blood collection tube of claim 4, wherein: the baffle ring (16) is flush with the top surface of the second pipe body (1).

6. The evacuated blood collection tube of claim 5, wherein: first body (2) outer wall protrusion has solid fixed ring (17), blocks up (14) and inserts recess (62) back, gu fixed ring (17) paste on keeping off ring (16) and be connected rather than bolt (4).

7. The evacuated blood collection tube of claim 1, wherein: the number of the through holes (18) is multiple, the plug (14) is located in the center of the partition plate (11), and the through holes (18) are uniformly arranged around the plug (14).

8. The evacuated blood collection tube of claim 1, wherein: the center of the sealing rubber cap (3) is provided with a semicircular groove (31).