Separable filter membrane type centrifugation-free blood collection tube

Abstract

The separable filter membrane type centrifugation-free blood collection tube comprises an inner tube, an outer tube and a cap, the inner tube is composed of an upper tube and a lower tube which are detachable, a rubber plug is arranged in a top port of the upper tube in a sliding mode, and a fiber filter layer is arranged in a bottom port of the upper tube; the cap is detachably connected with a top port of the upper pipe and used for sealing the port of the upper pipe; the outer pipe is arranged on the outer side of the inner pipe in a sleeving mode. According to the utility model, the blood plasma stratified collection is realized by utilizing the filtering effect of the fiber filtering layer on the blood plasma, the traditional centrifugal operation is replaced, the serum stratified extraction can be completed without depending on a centrifugal machine, the operation process is simplified, the separation and detection efficiency of a serum sample can be effectively improved, and the device is suitable for outdoor emergency blood sampling detection.

Description

Technical Field

[0001] The utility model relates to the field of medical experimental appliances, in particular to a detachable filter membrane type centrifugation-free blood collection tube. Background Art

[0002] When analyzing blood samples, the blood samples need to be layered first, and then the serum is extracted for testing. Currently, after blood is collected through a blood collection tube, it needs to be left to stand for a period of time until the blood is completely coagulated and begins to layer before centrifugation. This process takes about 30 minutes. In addition, the operation of extracting serum requires the use of centrifuge equipment to complete, which cannot meet the needs of outdoor emergency blood collection and testing. Utility Model Content

[0003] In view of the above problems, the utility model provides a detachable filter membrane type centrifuge-free blood collection tube, which can complete serum stratification extraction without relying on a centrifuge, simplifies the operation process, can effectively improve the separation and detection efficiency of serum samples, and is suitable for outdoor emergency blood collection and testing.

[0004] The technical solution of the utility model is as follows:

[0005] A detachable filter membrane type centrifugation-free blood collection tube, comprising:

[0006] The inner tube is composed of a detachable upper tube and a lower tube, a rubber plug is slidably arranged in the top port of the upper tube, and a fiber filter layer is arranged in the bottom port of the upper tube;

[0007] A cover cap is detachably connected to the top port of the upper tube and is used for closing the upper tube port.

[0008] The working principle of the above technical solution is as follows:

[0009] The utility model designs a traditional blood collection tube into two detachable upper and lower parts, wherein the upper tube and the lower tube can be specifically connected by a spiral connection, and the connection between the upper tube and the lower tube is a sealed connection; wherein the inner wall of the upper tube is sprayed with an anticoagulant (to prevent blood coagulation), and is used as a blood collection tube, is provided with a rubber plug for inserting a needle, and a fiber filter layer is arranged at the bottom of the upper tube for filtering plasma, and the filtered plasma enters the lower tube for storage, and the lower tube is used as a plasma storage tube, and can be directly used for plasma machine detection after being disassembled.

[0010] In addition, in order to speed up the stratified filtration of blood, the utility model also improves the rubber plug structure of the traditional blood collection tube, and movably sets the rubber plug structure in the blood collection tube. After the blood collection is completed, the storage space of the blood in the upper tube can be reduced by pressing the rubber plug down to a specified position (the position can be marked by setting a scale), thereby increasing the pressure in the space to speed up the filtration rate of plasma; in order to ensure that the rubber plug maintains stable deformation during the downward pressing process and can always play a good sealing role on the blood collection tube, an anti-deformation elastic rubber ring can be set on the outer edge of the rubber plug; the utility model combines the blood collection tube and the plasma preservation tube into one, and blood collection and plasma separation and preservation are completed in one step, which reduces the operating procedures of the experimenter, simplifies the experimental steps, and can effectively improve the separation and detection efficiency of serum samples. It is suitable for outdoor emergency blood collection and detection, and also reduces the risk of operators being infected by unknown blood.

[0011] In a further technical solution, the detachable filter membrane type centrifuge-free blood collection tube also includes an outer tube, which is sleeved on the outside of the inner tube and is made of a flexible plastic material to protect the inner tube to prevent the blood collection tube from accidentally falling and causing blood sample spillage, thereby causing unknown risks.

[0012] In a further technical solution, the top end face of the cap is a plane, and the inner diameter of the cap is matched with the outer diameter of the outer tube. After the cap is removed, it can be buckled on the bottom end of the outer tube to achieve stable standing placement. Compared with traditional blood collection tubes that can only be placed on a test tube rack due to the hemispherical bottom structure, the utility model is more convenient for the placement of blood collection tubes.

[0013] In a further technical solution, a rubber cover is fastened on the bottom of the lower tube. When the sample is tested or stored on a machine, the inner tube is taken out from the outer tube, and the rubber cover on the bottom of the lower tube is removed to seal the port of the lower tube to prevent the plasma sample from leaking or being contaminated.

[0014] Since the outer tube is made of flexible plastic material, in order to prevent the rubber cover from remaining in the outer tube due to friction and being unable to be removed when the inner tube is taken out of the outer tube, glue points can be connected between the rubber cover and the lower tube during processing and manufacturing, so as to prevent the rubber cover from remaining in the outer tube and facilitate the disassembly of the rubber cover and the lower tube.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model utilizes the filtering effect of the fiber filter layer on the plasma to realize the plasma stratification collection, replacing the traditional centrifugation operation, and can complete the serum stratification extraction without relying on the centrifuge, which simplifies the operation process, can effectively improve the separation and detection efficiency of serum samples, and is suitable for outdoor emergency blood collection and detection;

[0017] 2. The utility model carries out the whole process of blood collection, blood stratification and plasma collection in one step, without centrifugation or tube transfer, and the plasma can be directly put into the machine or stored. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a detachable filter membrane type centrifugation-free blood collection tube according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the inner tube according to an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the detachable filter membrane type centrifuge-free blood collection tube in the embodiment of the utility model when it is in the blood collection state;

[0021] Figure 4 It is a structural schematic diagram of the detachable filter membrane type centrifuge-free blood collection tube in the embodiment of the utility model when it is in a static plasma filtering state;

[0022] Figure 5 It is a schematic diagram of the structure of the lower tube described in the embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 100, cover cap; 200, inner tube; 210, upper tube; 211, rubber plug; 212, fiber filter layer; 220, lower tube; 300, outer tube; 400, rubber cover. DETAILED DESCRIPTION

[0025] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0026] Example:

[0027] A detachable filter membrane type centrifuge-free blood collection tube, such as Figure 1-Figure 2 As shown, including:

[0028] The inner tube 200 is composed of a detachable upper tube 210 and a lower tube 220. A rubber plug 211 is slidably provided in the top port of the upper tube 210, and a fiber filter layer 212 is provided in the bottom port of the upper tube 210.

[0029] The cover cap 100 is detachably connected to the top port of the upper tube 210 and is used to close the port of the upper tube 210 .

[0030] The utility model designs a traditional blood collection tube into two detachable upper and lower parts, wherein the upper tube 210 and the lower tube 220 can be specifically connected by a spiral connection, and the connection between the upper tube 210 and the lower tube 220 is a sealed connection; wherein, the inner wall of the upper tube 210 is sprayed with an anticoagulant (to prevent blood coagulation), and is used as a blood collection tube, and is provided with a rubber plug 211 for inserting a needle, and a fiber filter layer 212 is provided at the bottom of the upper tube 210 for filtering plasma, and the filtered plasma enters the lower tube 220 for storage, and the lower tube 220 is used as a plasma storage tube, and can be directly used for plasma machine detection after being disassembled.

[0031] In addition, in order to speed up the stratified filtration of blood, the utility model also improves the structure of the rubber plug 211 of the traditional blood collection tube, and movably sets the rubber plug 211 structure in the blood collection tube. After the blood collection is completed, the storage space of the blood in the upper tube 210 can be reduced by pressing the rubber plug 211 down to a specified position (the position can be marked by setting a scale), thereby increasing the pressure in the space to speed up the filtration rate of plasma; in order to ensure that the rubber plug 211 maintains stable deformation during the downward pressing process and can always play a good sealing role on the blood collection tube, an anti-deformation elastic rubber ring can be set on the outer edge of the rubber plug 211; the utility model combines the blood collection tube and the plasma preservation tube into one, and blood collection and plasma separation and preservation are completed in one step, which reduces the operating procedures of the experimenter, simplifies the experimental steps, and can effectively improve the separation and detection efficiency of serum samples. It is suitable for outdoor emergency blood collection and detection, and also reduces the risk of operators being infected by unknown blood.

[0032] In another embodiment, if Figure 1 As shown, the detachable filter membrane type centrifuge-free blood collection tube also includes an outer tube 300, which is sleeved on the outside of the inner tube 200 and is made of a flexible plastic material to protect the inner tube 200 to prevent the blood collection tube from accidentally falling and causing blood sample spillage, thereby causing unknown risks.

[0033] In another embodiment, if Figure 3-Figure 4 As shown, the top end surface of the cap 100 is a plane, and the inner diameter of the cap 100 is adapted to the outer diameter of the outer tube 300. After the cap 100 is removed, it can be buckled on the bottom end of the outer tube 300 to achieve stable standing placement. Compared with traditional blood collection tubes that can only be placed on a test tube rack due to the hemispherical bottom structure, the utility model is more convenient for the placement of blood collection tubes.

[0034] In another embodiment, if Figure 1 and Figure 5 As shown, a rubber cover 400 is fastened to the bottom of the lower tube 220. When the plasma sample is tested or stored on the machine, the inner tube 200 is taken out from the outer tube 300, and the rubber cover 400 at the bottom of the lower tube 220 is removed to seal the port of the lower tube 220 to prevent the plasma sample from leaking or being contaminated.

[0035] Since the outer tube 300 is made of a flexible plastic material, in order to prevent the rubber cover 400 from remaining in the outer tube 300 due to friction and being unable to be removed when the inner tube 200 is removed from the outer tube 300, during processing and manufacturing, a glue point connection can be made between the rubber cover 400 and the lower tube 220, so as to prevent the rubber cover 400 from remaining in the outer tube 300 and facilitate the disassembly of the rubber cover 400 and the lower tube 220.

[0036] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A detachable filter membrane type centrifuge-free blood collection tube, characterized in that: include: The inner tube is composed of a detachable upper tube and a lower tube, a rubber plug is slidably arranged in the top port of the upper tube, and a fiber filter layer is arranged in the bottom port of the upper tube; A cover cap is detachably connected to the top port of the upper tube and is used for closing the upper tube port.

2. The detachable filter membrane type centrifuge-free blood collection tube according to claim 1, characterized in that: Also includes: The outer tube is sleeved on the outer side of the inner tube.

3. The detachable filter membrane type centrifuge-free blood collection tube according to claim 2, characterized in that: The outer tube is made of flexible plastic material.

4. The detachable filter membrane type centrifuge-free blood collection tube according to claim 2, characterized in that: The top end surface of the cap is a plane, and the inner diameter of the cap is matched with the outer diameter of the outer tube.

5. The detachable filter membrane type centrifuge-free blood collection tube according to claim 1, characterized in that: A rubber cover is buckled on the bottom of the lower tube.

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