CN204698572U - A kind of assembled vacuum test tube - Google Patents

Abstract

The utility model discloses an assembled vacuum blood collection tube, which comprises a tube body with a nozzle and a negative pressure inner cavity, the nozzle is provided with a film body for sealing the negative pressure inner cavity, and the Connected with a plug for destroying the membrane body, the plug is provided with a connecting tube for connecting the blood collection needle, the top of the connecting tube extends out of the plug, and the bottom of the connecting tube extends into the negative pressure inner cavity, and the plug is threadedly connected with a Seal the lid. The split-type novel structure breaks the traditional integral structure of vacuum blood collection tubes. The tube body is sealed with a membrane, which effectively ensures the existence of negative pressure, avoids the failure of the vacuum tube caused by air leakage, and effectively protects the vacuum tube in the tube. The activity of the additive ensures the accuracy of the results of blood test items and provides a reliable basis for doctors to diagnose diseases.

Description

An assembled vacuum blood collection tube

technical field

The utility model relates to the field of medical supplies, in particular to an assembled vacuum blood collection tube.

Background technique

There are a lot of intravenous infusion equipment used clinically in the hospital, including vacuum blood collection test tubes. Disposable blood collection needles for vacuum blood collection tubes are non-toxic, sterile, non-pyrogenic, and ethylene oxide sterilized. Using a disposable vacuum blood collection device instead of a disposable syringe for blood collection is an advanced blood collection technology that is very popular among hospitals and patients. A large number of applications of vacuum blood collection tubes provide a very convenient and reliable blood collection method for medical personnel.

In clinical blood collection, different test items require different vacuum blood collection tubes to be selected, such as ordinary serum tubes with red caps, blood collection tubes do not contain additives, and are used for routine serum biochemical, blood bank and serological related tests. The rapid serum tube has an orange-red cap, and there is a coagulant in the blood collection tube to accelerate the coagulation process. The inert separation gel coagulation accelerator tube has a golden cap, and inert separation gel and coagulation accelerator are added in the blood collection tube. The coagulant can quickly activate the coagulation mechanism and accelerate the coagulation process, and is suitable for emergency serum biochemical tests. Heparin anticoagulant tube has a green cap, and heparin is added in the blood collection tube. Plasma separation tube with light green head cap, adding heparin lithium anticoagulant in the inert separation rubber tube, can achieve the purpose of rapid plasma separation, is the best choice for electrolyte detection, and can also be used for routine plasma biochemical determination and emergency plasma biochemical detection in ICU . Plasma samples can be used directly on the machine and remain stable for 48 hours in a refrigerated state.

The above-mentioned various vacuum blood collection tubes need to add different agents inside the test tubes in a negative pressure environment. The existing vacuum blood collection tubes currently have the following problems, such as easy air leakage, because the existing vacuum blood collection tubes are a A glass tube or plastic tube with a smooth round bottom, equipped with a cap, and then vacuumed inside. The connection between the tube body and the cap is often not tightly sealed. The problem of air leakage not only makes the negative pressure in the vacuum blood collection tube disappear, blood cannot enter the tube body during blood collection, and once the air leaks, the medicine in the tube body will be damaged. Air oxidation causes failure, which directly affects the real test results of the test items in the blood. In addition, the traditional blood collection tube needs to be opened for blood testing after the blood collection is completed. After collecting blood with a vacuum blood collection tube, there is still a certain negative pressure in the vacuum test tube, and the close fit between the test tube cover and the test tube wall makes it The test tube cap is still firmly fixed on the test tube, and it takes a lot of effort to pull the test tube cap off. In the occasions where vacuum blood collection tubes are widely used, the work of opening the test tube cover has become relatively heavy manual labor. In the process of vigorously opening the test tube cover, there will also be internal oscillations in the test tube, which may disperse the centrifuged samples, affect some test results, and have certain technical requirements for the operator. Vigorously opening the cap of the blood collection tube may also break the blood collection tube and injure the operator's fingers. At the same time, there will be a certain amount of aerosol pollution of the patient's blood during the process of opening the cover, which will endanger the health of the operator.

Contents of the invention

Aiming at the deficiencies in the existing technology, the technical problem to be solved by the utility model is to provide an assembled vacuum blood collection tube with simple structure, convenient use, which can effectively improve the accuracy of blood test results and reduce the failure rate of the blood collection tube .

In order to solve the above technical problems, the technical solution adopted by the utility model is: an assembled vacuum blood collection tube, including a tube body with a nozzle and a negative pressure inner cavity, and the nozzle is provided with a seal for sealing the negative pressure inner cavity. The membrane body is detachably connected with a plug for destroying the membrane body, and the plug is provided with a connecting tube for connecting the blood collection needle. The top of the connecting tube extends out of the plug, and the bottom of the connecting tube extends toward the negative pressure The inner chamber is threadedly connected with a sealing cover on the pipe plug.

In the above-mentioned assembled vacuum blood collection tube, the plug includes a plug body connected to the tube body through threads, and a piercing part extending downward from the bottom of the plug body when the plug is screwed into the tube body breaks the membrane, The puncturing part includes an accommodating chamber with an open bottom, and the accommodating chamber communicates with the negative-pressure inner chamber after pushing through the membrane body, and the bottom of the connecting pipe is placed in the accommodating chamber.

In the above-mentioned assembled vacuum blood collection tube, a connecting chamber is provided at the mouth of the nozzle to be threadedly connected with the pipe plug, and the membrane body is arranged between the connecting chamber and the negative pressure inner chamber.

In the aforementioned assembled vacuum blood collection tube, the depth of the connecting cavity along the axis direction of the tube body is smaller than the length of the piercing part at the bottom of the tube plug body.

In the aforementioned assembled vacuum blood collection tube, the outer diameters of the tube body, the tube plug and the sealing cap are the same.

The advantages of the assembled vacuum blood collection tube of the utility model are: adopting a split-type novel structure, which breaks the traditional integral structure of the vacuum blood collection tube, and the tube body adopts a membrane sealing method, which effectively ensures the existence of negative pressure and avoids air leakage The failure of the vacuum tube caused by the problem effectively protects the activity of the additive in the tube body, ensures the accuracy of the results of the blood test items, and provides a reliable basis for doctors to diagnose diseases, and the utility model can be used with any tube with a sealed cover The plug fits, ready to use, easy to use. After the blood collection is completed, the sealing cap can be tightened to prevent bacterial contamination. When performing blood testing, the plug can be unscrewed directly to pour out the blood. The area is larger, and it is easier to unscrew than the traditional cap, which makes the operation more convenient and prevents the problem that the blood collection tube is broken and hurts the operator's fingers.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic diagram of the assembly structure of the present utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail;

As shown in Figures 1 and 2, an assembled vacuum blood collection tube includes a tube body 3 with a nozzle 1 and a negative pressure inner cavity 2, and an additive 4 for assisting blood detection items is added in the tube body 3. The mouth 1 is provided with a membrane body 5 for sealing the negative pressure inner cavity 2, and a plug 6 for destroying the membrane body 5 is detachably connected to the tube body 3, and a connecting tube for connecting a blood collection needle is arranged on the plug 6 7. The top of the connecting pipe 7 protrudes from the pipe plug 6, and the bottom protrudes into the negative pressure inner chamber 2, and the pipe plug 6 is threadedly connected with a sealing cover 8. The pipe plug 6 includes a pipe plug body 9 connected to the pipe body 3 by threads, and a piercing part 10 that breaks the membrane body 5 when the pipe plug 6 is screwed into the pipe body 3 extends downward from the bottom of the pipe plug body 9. The puncturing part 10 includes an accommodating cavity 11 with an open bottom. The accommodating cavity 11 communicates with the negative pressure inner cavity 2 after breaking through the membrane body 5 . The bottom of the connecting tube 7 is placed in the accommodating cavity 11 . A connecting chamber 12 threadedly connected with the pipe plug 6 is provided at the nozzle 1 , and the membrane body 5 is arranged between the connecting chamber 12 and the negative pressure inner chamber 2 . The setting position of the connection cavity 12 can well prevent the staff from breaking the membrane body 5 when carrying and picking up the tube body 3, thereby effectively improving the service life of the blood collection tube. In order to ensure that the tube plug 6 accurately punctures the membrane body 5 when it is tightly coupled with the tube body 3 , the depth of the connecting cavity 12 along the axis direction of the tube body 3 is smaller than the length of the piercing portion 10 at the bottom of the tube plug body 9 . In order to put the collected blood collection tubes on the test tube rack uniformly and to achieve the purpose of aesthetics, the outer diameters of the tube body, the tube plug and the sealing cap are the same.

Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above-mentioned examples. Those of ordinary skill in the art can make changes, modifications, additions or replacements within the essential scope of the present utility model. All should belong to the protection scope of the present utility model.

Claims (5)

1. an assembled vacuum test tube, comprise the body with the mouth of pipe and negative pressure inner chamber, it is characterized in that: described mouth of pipe place is provided with the film body for sealed negative-pressure inner chamber, dismountable pipe close be connected with for destroying film body on body, pipe close is provided with the connection tube for connecting blood taking needle, pipe close is stretched out at the top of described connection tube, and negative pressure inner chamber is stretched in bottom, and pipe close has been threaded connection seal cover.

2. assembled vacuum test tube according to claim 1, it is characterized in that: described pipe close comprises the pipe close body be connected with body by screw thread, the punctured part of the bursting film body when pipe close screws in body is extended with downwards in the bottom of pipe close body, described punctured part comprises the containing cavity of a bottom opening, with negative pressure inner space after this containing cavity bursting film body, the bottom of described connection tube is placed in containing cavity.

3. assembled vacuum test tube according to claim 2, is characterized in that: described mouth of pipe place is provided with the connection chamber be threaded with pipe close, and described film body is arranged between connection chamber and negative pressure inner chamber.

4. assembled vacuum test tube according to claim 3, is characterized in that: described connection chamber is less than the punctured part length of pipe close body bottom portion along its degree of depth of axis direction of body.

5. assembled vacuum test tube according to claim 4, is characterized in that: the external diameter of described body, pipe close and seal cover is identical.