CN212996438U

CN212996438U - Safe peripheral blood sampling device

Info

Publication number: CN212996438U
Application number: CN202020399184.4U
Authority: CN
Inventors: 杨兆收; 杨小蓉; 李瑞莹; 冯红梅; 郭煜; 冯大文
Original assignee: Guangdong Pharmaceutical University; First Affiliated Hospital of Guangdong Pharmaceutical University
Current assignee: Guangdong Pharmaceutical University; First Affiliated Hospital of Guangdong Pharmaceutical University
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-04-20
Anticipated expiration: 2030-03-25

Abstract

The utility model relates to a safe peripheral blood sampling device, which comprises a sampling tube, a tube cap and a capillary glass tube, wherein one end of the sampling tube is provided with an opening, the tube cap comprises a tube cap body, a plug and a sleeve joint part, one end of the capillary glass tube is inserted into the sampling tube through a through hole, only a small section is exposed outside, and the capillary glass tube is firstly protected and is not easy to damage when in use; during sampling, a sampled blood sample directly flows into the sampling tube from the capillary glass tube, a gap is reserved between the inner side wall of the sleeving part and the outer side wall of the sampling tube, the vent hole is communicated with the inside and the outside of the sampling tube, and the air pressure inside and outside the sampling tube is kept consistent, so that the siphon effect of the capillary glass tube is facilitated; after enough blood samples are collected, the capillary glass tube is firstly extracted, the through hole and the air vent are in an open state at the moment, the plug is plugged into the groove of the tube cap body, the tube cap and the sampling tube are tightly pressed, the open end of the sampling tube is in close contact with the sealing rubber ring on the tube cap body, a closed tube cavity is formed, and liquid leakage and pollution are avoided.

Description

Safe peripheral blood sampling device

Technical Field

The utility model relates to a medical treatment check out test set field especially relates to a safe peripheral blood sampling device.

Background

Blood drawing tests are medical measures often adopted by patients diagnosed and treated in hospitals, most adults draw blood by using vacuum blood collection tubes or disposable syringes for vein, infants and old people often collect peripheral blood due to thin blood vessels or inconvenient activities, and most hospitals have three methods for carrying out the work at present: 1. adopting an anticoagulation test tube blood scraping method; 2. adopting a gravity thick plastic pipe drainage method; 3. two-step collection, firstly, a disposable glass micro blood collection tube (capillary glass tube) is used for absorbing blood and then the blood is added into an anticoagulation tube or a cup. When the method 1 is adopted, the operation is complicated, an operator needs to frequently open and close the test tube cap, blood can contaminate the opening and the wall of the test tube during scraping to cause errors of test results, and medical personnel are easily contaminated. The second method has high requirements on the position due to the gravity method, the blood storage tube must be arranged 5 cm below the blood sampling part during blood sampling, the blood storage tube is difficult to collect for hospitalized or bedridden patients, and the blood storage tube cannot collect the blood if air bubbles exist in the blood sampling tube. The 3 rd method uses a two-step method, the operation is more complicated, and the disposable glass micro blood sampling tube is easy to break, which is easy to cause blood sampling failure and pollution.

Disclosure of Invention

To the technical problem who exists among the prior art, the utility model aims at: provided is a safe peripheral blood sampling device which can prevent a blood sample from being polluted, can prevent a disposable glass micro blood sampling tube from being broken, and can conveniently take blood.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a safe peripheral blood sampling device comprises a sampling tube, a tube cap and a capillary glass tube, wherein one end of the sampling tube is provided with an opening, the tube cap comprises a tube cap body, a plug and a sleeve joint part, the sleeve joint part is a tubular sleeve joint part, the sleeve joint part is fixedly connected to one end of the tube cap body, the tube cap body is arranged at the opening end of the sampling tube, the sleeve joint part is sleeved outside the sampling tube, a gap is reserved between the inner side wall of the sleeve joint part and the outer side wall of the sampling tube, the inner side wall of the sleeve joint part is provided with a first clamping protrusion, a second clamping bulge is arranged on the outer side wall of the sampling tube corresponding to the first clamping bulge, a groove which is sunken downwards is arranged on the upper end surface of the tube cap body and is used for accommodating a plug, a through hole is arranged on the bottom surface of the groove, one end of the capillary glass tube penetrates through the through hole and is inserted into the sampling tube, a plurality of vent holes are arranged around the through hole, the through hole and the vent holes are communicated with the sampling tube, corresponding the open position of sampling pipe, the pipe cap body is equipped with sealed rubber ring towards open end one side of sampling pipe.

Furthermore, corresponding to the second clamping protrusion, the inner side wall of the sleeving part is also provided with a third clamping protrusion, and the third clamping protrusion and the first clamping protrusion are spaced at a certain distance in the longitudinal direction of the sleeving part.

Further, the third clamping protrusion is a circumferentially continuous annular clamping protrusion arranged on the inner side wall of the sleeving part.

Furthermore, one end of the plug is provided with a ring of flange, and the shape of the groove is the same as that of the plug.

Further, the capillary glass tube is in interference fit with the through hole.

Furthermore, the one side of pipe cap body orientation sampling pipe is equipped with sealed rubber ring joint position, and sealed rubber ring joint position is cyclic annular sealed rubber ring joint position.

Further, the first clamping protrusion is a circumferentially continuous annular clamping protrusion arranged on the inner side wall of the sleeving part.

Further, the second clamping protrusion is an annular clamping protrusion which is arranged on the outer side wall of the sampling pipe and is continuous in the circumferential direction.

In general, the utility model has the advantages as follows:

a safe peripheral blood sampling device is characterized in that one end of a capillary glass tube is inserted into a sampling tube through a through hole, and only a small section is exposed outside, so that the capillary glass tube is protected firstly and is not easy to damage when in use; during sampling, a sampled blood sample directly flows into the sampling tube from the capillary glass tube, a gap is reserved between the inner side wall of the sleeving part and the outer side wall of the sampling tube, the vent hole is communicated with the inside and the outside of the sampling tube, and the air pressure inside and outside the sampling tube is kept consistent, so that the siphon effect of the capillary glass tube is facilitated; after enough blood samples are collected, the capillary glass tube is firstly extracted, the through hole and the air vent are in an open state at the moment, the plug is plugged into the groove of the tube cap body, the tube cap and the sampling tube are tightly pressed, the open end of the sampling tube is in close contact with the sealing rubber ring on the tube cap body, a closed tube cavity is formed, and liquid leakage and pollution are avoided.

Drawings

Fig. 1 is a schematic view of an angle of a cap of a safe peripheral blood sampling device according to the present invention.

Fig. 2 is a schematic cross-sectional view taken along line a-a in fig. 1.

Fig. 3 is a schematic view of an angle of a sampling tube of a safe peripheral blood sampling device according to the present invention.

Fig. 4 is a schematic cross-sectional view at B-B in fig. 3.

Fig. 5 is a schematic structural diagram of an operating state of the safe peripheral blood sampling device of the present invention.

Fig. 6 is a schematic structural view of another working state of the safe peripheral blood sampling device of the present invention.

Wherein fig. 1 to 6 include:

1-pipe cap, 11-pipe cap body, 111-through hole, 12-plug, 121-flange, 13-socket joint portion, 131-first clamping projection, 132-third clamping projection, 14-sealing rubber ring, 15-vent hole, 16-clamping position, 17-groove, 2-sampling pipe, 21-second clamping projection, 3-capillary glass pipe.

Detailed Description

The present invention will be described in further detail below.

As shown in fig. 1 to 6, a safe peripheral blood sampling device includes a sampling tube 2, a cap 1 and a capillary glass tube 3. The capillary glass tube 3 is made of borosilicate glass, so that the quality of whole blood is ensured. The external diameter of the capillary glass tube 3 is 1.35-1.4mm, and the internal diameter is 0.68-0.9mm, so that the siphon effect of the capillary glass tube 3 is ensured. The sampling tube 2 is made of plastic.

As shown in fig. 2 and 3, one end of the sampling tube 2 is provided with an opening. As shown in fig. 1 and 2, the cap 1 includes a cap body 11 and a socket 13. The cap body 11 and the sleeve part 13 are made of plastic. Cup joint portion 13 is pipy portion of cup jointing 13, and 13 rigid couplings of portion of cup jointing in the one end of pipe cap body 11, pipe cap body 11 set up in the open end of sampling pipe 2, and portion of cup jointing 13 cup joints in the 2 outsides of sampling pipe, leaves the gap between the inside wall of portion of cup jointing 13 and the lateral wall of sampling pipe 2. The pipe cap body 11 up end is equipped with undercut's recess 17, and recess 17 is used for holding stopper 12, and the bottom surface of recess 17 is equipped with through-hole 111, and in the one end of capillary glass pipe 3 passed through-hole 111 and inserted sampling pipe 2, through-hole 111 was equipped with a plurality of air vent 15 all around, and through-hole 111 and air vent 15 all communicate sampling pipe 2. The capillary glass tube 3 is interference-fitted with the through hole 111. The inside wall of cup joint portion 13 is equipped with first protruding 131 of card, corresponds first protruding 131 of card, and the lateral wall of sampling pipe 2 is equipped with the protruding 21 of second card. The first engaging projection 131 is a circumferentially continuous annular engaging projection provided on the inner sidewall of the socket portion 13. The second clamping projection 21 is a circumferentially continuous annular clamping projection arranged on the outer side wall of the sampling tube 2. As shown in fig. 5, the first locking protrusion 131 is located on the upper portion of the second locking protrusion 21 at the initial position, and plays a role of supporting the tube cap 1, so that a gap is left between the opening of the sampling tube 2 and the sealing rubber ring 14, thereby ensuring that the air pressure inside and outside the sampling tube 2 is consistent during sampling, and facilitating the siphon effect of the capillary glass tube 3. Corresponding the opening position of sampling pipe 2, tube cap body 11 is equipped with sealing rubber ring 14 towards open end one side of sampling pipe 2. One side of the tube cap body 11 facing the sampling tube 2 is provided with a clamping position 16 of the sealing rubber ring 14, and the clamping position 16 of the sealing rubber ring 14 is an annular clamping position 16 of the sealing rubber ring 14.

The plug 12 is of rubber or plastics material. One end of the plug 12 is provided with a ring of flanges 121 and the recess 17 is shaped the same as the plug 12. The flange 121 is used to retain the plug in the recess 17 when the plug is inserted into the recess 17, preventing the plug from being removed.

As shown in fig. 5, in the safe peripheral blood sampling device, one end of a capillary glass tube 3 is inserted into a sampling tube 2 through a through hole 111, and only a small section is exposed outside, so that the capillary glass tube 3 is firstly protected and is not easy to damage when in use; during sampling, a sampled blood sample directly flows into the sampling tube 2 from the capillary glass tube 3, a gap is reserved between the inner side wall of the sleeving part 13 and the outer side wall of the sampling tube 2, the vent hole 15 is also communicated with the inside and the outside of the sampling tube 2, the air pressure inside and outside the sampling tube 2 is kept consistent, and the siphon effect of the capillary glass tube 3 is facilitated; as shown in fig. 6, after enough blood samples are collected, the capillary glass tube 3 is firstly pulled out, the through hole 111 and the vent hole 15 are in an open state at the moment, the plug 12 is plugged into the groove 17 of the tube cap body 11, the tube cap 1 and the sampling tube 2 are tightly pressed, the open end of the sampling tube 2 is in close contact with the sealing rubber ring 14 on the tube cap body 11, a closed tube cavity is formed, and liquid leakage and pollution are avoided.

As shown in fig. 2, corresponding to the second protrusion 21, a third protrusion 132 is further disposed on the inner sidewall of the sleeve portion 13, and the third protrusion 132 and the first protrusion 131 are spaced apart from each other in the longitudinal direction of the sleeve portion 13. The third locking protrusion 132 can prevent the tube cap 1 from being separated from the sampling tube 2, and is more convenient and safe in use. The third snap projection 132 is a circumferentially continuous annular snap projection provided on the inner side wall of the socket portion 13.

The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. A safe peripheral blood sampling device characterized in that: comprises a sampling pipe, a pipe cap and a capillary glass pipe, wherein one end of the sampling pipe is provided with an opening, the pipe cap comprises a pipe cap body, a plug and a sleeve joint part, the sleeve joint part is a tubular sleeve joint part, the sleeve joint part is fixedly connected with one end of the pipe cap body, the pipe cap body is arranged at the opening end of the sampling pipe, the sleeve joint part is sleeved outside the sampling pipe, a gap is reserved between the inner side wall of the sleeve joint part and the outer side wall of the sampling pipe, the inner side wall of the sleeve joint part is provided with a first clamping protrusion, a second clamping bulge is arranged on the outer side wall of the sampling tube corresponding to the first clamping bulge, a groove which is sunken downwards is arranged on the upper end surface of the tube cap body and is used for accommodating a plug, a through hole is arranged on the bottom surface of the groove, one end of the capillary glass tube penetrates through the through hole and is inserted into the sampling tube, a plurality of vent holes are arranged around the through hole, the through hole and the vent holes are communicated with the sampling tube, corresponding the open position of sampling pipe, the pipe cap body is equipped with sealed rubber ring towards open end one side of sampling pipe.

2. A safe peripheral blood collection device according to claim 1, wherein: the inner side wall of the sleeving part is also provided with a third clamping protrusion corresponding to the second clamping protrusion, and the third clamping protrusion and the first clamping protrusion are spaced at a certain distance in the longitudinal direction of the sleeving part.

3. A safe peripheral blood collection device according to claim 2, wherein: the third clamping protrusion is a circumferentially continuous annular clamping protrusion arranged on the inner side wall of the sleeving part.

4. A safe peripheral blood collection device according to claim 1, wherein: one end of the plug is provided with a ring of flange, and the shape of the groove is the same as that of the plug.

5. A safe peripheral blood collection device according to claim 1, wherein: the capillary glass tube is in interference fit with the through hole.

6. A safe peripheral blood collection device according to claim 1, wherein: one side of the pipe cap body facing the sampling pipe is provided with a sealing rubber ring clamping position, and the sealing rubber ring clamping position is an annular sealing rubber ring clamping position.

7. A safe peripheral blood collection device according to claim 1, wherein: the first clamping protrusion is an annular clamping protrusion which is arranged on the inner side wall of the sleeving part and is continuous in the circumferential direction.

8. A safe peripheral blood collection device according to claim 7, wherein: the second clamping protrusion is an annular clamping protrusion which is arranged on the outer side wall of the sampling pipe and is continuous in the circumferential direction.