A purification and filtering device for small doses of whole blood, feces and sputum

Abstract

The present invention discloses a purification and filtering device for small doses of whole blood, feces, and sputum, comprising a plate body, a filtering part arranged on the plate body, a sample adding cylinder arranged above the filtering part and used for injecting fluid to be tested, and a liquid storage tank arranged on the plate body and used for collecting the filtrate of the filtering part. The purification and filtering device in the present invention does not require centrifugal operation, has low consumables cost, and the filter material is applicable to a wide range of samples, and is particularly applicable to whole blood serum separation, feces separation, and sputum separation. The technical background is derived from the filtering device, and the filtered substances are screened according to the gap size of the filtering material. Since the sample extraction of blood, feces, and sputum on the market is all done by centrifugation and sedimentation, the centrifugation method requires equipment and site influences and is not particularly convenient, and the sedimentation method requires a certain amount of time for precipitation, so the filtration method is more convenient and advantageous than the above two methods, which solves the cumbersomeness of the centrifugation method and saves the time demand of the sedimentation method.

Description

Technical Field

[0001] The invention relates to the technical field of detection and processing devices, and in particular to a purification and filtering device for small doses of whole blood, feces and sputum. Background Art

[0002] The current separation and purification devices for whole blood, feces, and sputum on the market have the following shortcomings:

[0003] 1. When using a centrifuge, a power supply and corresponding counterweights are required, which is inconvenient and cumbersome to use;

[0004] 2. Use vacuum filtration device to filter and purify small amount of samples, and the cost of consumables is relatively high;

[0005] 3. When using a microporous membrane to purify the filtration device, it is easy to get clogged due to the small pore size, and the design defects lead to insufficient performance;

[0006] 4. The use of special blood and feces separation and purification equipment is not possible for small doses and the consumables are expensive. It is not flexible enough and the equipment is expensive. Summary of the invention

[0007] The purpose of the present invention is to provide a purification and filtering device for small doses of whole blood, feces and sputum, so as to solve the problem in the background technology that it is inconvenient to pre-treat the fluid to be examined in physical examination.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] The present invention provides a purification and filtering device for small doses of whole blood, feces and sputum, comprising a plate body, a filtering part arranged on the plate body, a sample adding cylinder arranged above the filtering part and used for injecting fluid to be tested, and a liquid storage tank arranged on the plate body and used for collecting the filtrate of the filtering part.

[0010] Furthermore, a reserved cavity for encapsulating the filter part is provided in the plate body, the sample adding cylinder is arranged above the reserved cavity, and a downflow port communicating with the filter part is provided at the bottom of the sample adding cylinder;

[0011] A guide groove is arranged between the reserved cavity and the liquid storage tank; and a confluence hole connected with the guide groove is opened at the bottom of the liquid storage tank.

[0012] Furthermore, the bottom surface of the sample adding cylinder is higher than the bottom surface of the liquid storage tank.

[0013] Furthermore, the plate body is detachably connected to at least one of the sample adding cylinder and the liquid storage tank.

[0014] Furthermore, a sample adding cylinder, a reserved cavity communicated with the sample adding cylinder, and a liquid storage tank communicated with the reserved cavity are integrally formed on the plate body;

[0015] A guide groove connecting the reserved cavity and the liquid storage tank is provided at the bottom of the plate body;

[0016] A bottom plate for sealing the guide groove and the bottom of the reserved cavity is arranged at the bottom of the plate body.

[0017] Furthermore, the cross-section of the guide groove is semicircular, rectangular or polygonal.

[0018] Furthermore, the plate body is made of plastic transparent plastic material.

[0019] Furthermore, the material of the plate is one of acrylic plate, ABS, PP, PC, and PMMA.

[0020] Furthermore, the filter part is made of non-woven multi-layer material.

[0021] Compared with the prior art, the beneficial technical effects of the present invention are:

[0022] The purification filtering device in the present invention does not rely on power supply, does not require centrifugal operation, has low consumables cost, and the filtering material is applicable to a wide range of samples, especially for whole blood serum separation, feces separation, and sputum separation. The technical background is derived from the filtering device, and the filtered substances are screened according to the gap size of the filtering material. Since the extraction of blood, feces, and samples on the market are all done by centrifugation and sedimentation, the centrifugation method requires equipment and site influences and is not particularly convenient, and the sedimentation method requires a certain amount of time for precipitation, so the filtration method is more convenient and advantageous than the above two methods, which solves the cumbersomeness of the centrifugation method and saves the time requirement of the sedimentation method.

[0023] The invention described relates to a whole blood, feces, sputum, purification and filtering device;

[0024] 1. The injection molding process produces accessories at a rate of 12 per mold, one mold per three seconds, and about 20 molds per minute.

[0025] 2. Further improve the high material cost. This invention can use ABS, PP, PC, and PMMA for material selection.

[0026] 3. Further optimize the filter material and sample injection port.

[0027] 4. Further optimize the processing technology to enable fast and fully automatic production to save site and labor costs.

[0028] 5. Further application of recyclable plastic materials is conducive to environmental protection and recyclability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the external structure of the purification and filtering device for small doses of whole blood, feces and sputum of the present invention;

[0031] Figure 2 for Figure 1 Schematic diagram from top view;

[0032] Figure 3 for Figure 2 Schematic diagram of the middle AA section;

[0033] Figure 4 for Figure 2 Schematic diagram of the middle BB section;

[0034] Figure 5 for Figure 2 Schematic diagram of the CC section;

[0035] Figure 6 The figure is a schematic diagram of the disassembly structure of the purification and filtering device for small doses of whole blood, feces and sputum of the present invention.

[0036] Explanation of reference numerals: 100, plate body; 101, flow guide groove; 200, sample adding cylinder; 201, downstream port; 300, liquid storage tank; 301, confluence hole; 400, bottom plate; 500, filter unit. DETAILED DESCRIPTION

[0037] Example 1

[0038] like Figure 1 As shown, this embodiment discloses a purification and filtering device for small doses of whole blood, feces, and sputum, including a plate body 100, a filter portion 500 installed on the plate body 100, a sample injection cylinder 200 installed above the filter portion 500 and used for injecting fluid to be tested, and a liquid storage tank 300 installed on the plate body 100 and used for collecting the filtrate of the filter portion 500.

[0039] like Figure 2-5 As shown, in a specific implementation, a reserved cavity for encapsulating the filter part 500 is provided in the plate body 100, the sample adding cylinder 200 is installed above the reserved cavity, and a downflow port 201 connected to the filter part 500 is provided at the bottom of the sample adding cylinder 200; a guide groove 101 is provided between the reserved cavity and the liquid storage tank 300. A confluence hole 301 connected to the guide groove 101 is provided at the bottom of the liquid storage tank 300. In a specific implementation, the filter part 500 is made of a non-woven multi-layer material.

[0040] When in use, after the fluid to be detected is injected into the sample adding cylinder 200, it is filtered by the filter unit 500 below the sample adding cylinder 200, and the filtrate overflows into the liquid storage tank 300 through the guide groove 101, so as to facilitate the detection of the filtrate.

[0041] In this embodiment, Figure 5 As shown, a sample adding cylinder 200, a reserved cavity connected to the sample adding cylinder 200, and a liquid storage tank 300 connected to the reserved cavity are integrally formed on the plate body 100; the bottom surface of the sample adding cylinder 200 is higher than the bottom surface of the liquid storage tank 300, which is convenient for forming a liquid level pressure difference and improving the filtering efficiency of the filter part 500. The cross-section of the guide groove 101 is semicircular, rectangular, or polygonal; preferably, a semicircular shape is convenient for processing.

[0042] A guide groove 101 connecting the reserved cavity and the liquid storage tank 300 is also opened at the bottom of the plate body 100; specifically, a bottom plate 400 for sealing the guide groove 101 and the bottom of the reserved cavity is installed at the bottom of the plate body 100 by adhesive.

[0043] In this embodiment, the plate body 100 is a plastic transparent material; preferably, the plate body 100 is an acrylic plate; at the same time, the sample adding cylinder 200, the reserved cavity, and the liquid storage tank 300 of the purification and filtering device in this embodiment are integrally connected, so that they can be directly processed by plastic processing techniques such as thermoplasticization, extrusion molding, and injection molding.

[0044] In specific implementation, 1 this device includes a rectangular acrylic sheet, a sample adding cylinder 200 with a height of 10 mm, an outer diameter of 5 mm and an inner diameter of 3.5 mm integrally made on the acrylic sheet, and a downflow port 201 with an inner diameter of 1.2 mm is connected to the bottom of the sample adding cylinder 200; a filter material of special material is installed below the downflow port 201, and a liquid storage tank 300 with a diameter of 5 mm and a depth of 3 mm is formed at the other end of the rectangular acrylic sheet. The guide groove 101 is a semicircular narrow groove with a diameter of 0.7, and the center distance from the sample adding point to the liquid storage tank is 25 mm. There is a 0.5 mm gap between the sample adding port and the filter material, which serves as a space for storing foreign matter during filtration. There is a 0.5 mm plastic sheet at the bottom bonded to the bottom of the acrylic structure above to form the entire product.

[0045] This device is so simple that the production process only requires three simple steps to complete the production:

[0046] 1. The first step is to take the injection molded part.

[0047] 2. Fill the sample wells with filter material.

[0048] 3. Glue the bottom plastic part onto the upper injection molded part to complete the processing and assembly process.

[0049] The device of this embodiment has no requirements for the environment and is suitable for the actual needs of multiple scenarios. It is simple, convenient and fast. The operation steps are to inject into the sample well with a pipette, pressurize the liquid through the air pressure in the cavity, filter the sample through the filter material at the bottom of the sample well, reach the microchannel below, and enter the sample filtration storage tank through the microchannel.

[0050] Example 2

[0051] In this embodiment, the plate body 100 is detachably connected to at least one of the sample adding cylinder 200 and the liquid storage tank 300 .

[0052] Specifically, based on Example 1, the sample adding cylinder 200 can be designed as a split structure, a reserved cavity for the filter unit 500 is opened in the plate body 100, and a threaded opening or a limit opening connected to the sample adding cylinder 200 is opened at the top of the reserved cavity.

[0053] The above embodiments are only descriptions of the preferred methods of the invention, and are not intended to limit the scope of the invention. Without departing from the design spirit of the invention, various modifications and improvements made to the technical solutions of the invention by ordinary technicians in this field should fall within the protection scope of the claims of the invention.

Claims

1. A purification and filtering device for small doses of whole blood, feces, and sputum, characterized in that: The invention comprises a plate body (100), a filter part (500) arranged on the plate body (100), a sample injection cylinder (200) arranged above the filter part (500) and used for injecting a fluid to be tested, and a liquid storage tank (300) arranged on the plate body (100) and used for collecting a filtrate from the filter part (500).

2. The purification and filtering device for small doses of whole blood, feces and sputum according to claim 1, characterized in that: A reserved cavity for encapsulating the filter part (500) is provided in the plate body (100), the sample adding cylinder (200) is arranged above the reserved cavity, and a downflow port (201) communicating with the filter part (500) is provided at the bottom of the sample adding cylinder (200); A guide groove (101) is provided between the reserved cavity and the liquid storage tank (300); and a confluence hole (301) communicating with the guide groove (101) is provided at the bottom of the liquid storage tank (300).

3. The purification and filtering device for small doses of whole blood, feces and sputum according to claim 2, characterized in that: The bottom surface of the sample adding cylinder (200) is higher than the bottom surface of the liquid storage tank (300).

4. The purification and filtering device for small doses of whole blood, feces and sputum according to claim 3, characterized in that: The plate body (100) is detachably connected to at least one of the sample adding cylinder (200) and the liquid storage tank (300).

5. The purification and filtering device for small doses of whole blood, feces and sputum according to claim 3, characterized in that: A sample adding cylinder (200), a reserved cavity communicated with the sample adding cylinder (200), and a liquid storage tank (300) communicated with the reserved cavity are integrally formed on the plate body (100); A guide groove (101) connecting the reserved cavity and the liquid storage tank (300) is also provided at the bottom of the plate body (100); A bottom plate (400) is provided at the bottom of the plate body (100) for sealing the guide groove (101) and the bottom of the reserved cavity.

6. The purification and filtering device for small doses of whole blood, feces and sputum according to claim 5, characterized in that: The cross section of the guide groove (101) is semicircular, rectangular or polygonal.

7. The purification and filtering device for small doses of whole blood, feces and sputum according to claim 1, characterized in that: The plate body (100) is made of a plastic transparent material.

8. The purification and filtering device for small doses of whole blood, feces and sputum according to claim 7, characterized in that: The material of the plate body (100) is one of acrylic plate, ABS, PP, PC and PMMA.

9. The purification and filtering device for small doses of whole blood, feces and sputum according to claim 7, characterized in that: The filter part (500) is made of a non-woven multi-layer material.

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