Cell filter

Abstract

The utility model discloses a cell filter which comprises a primary filtering part and a cell filtering part, and a first filter screen is arranged in an internal channel of the primary filtering part; an ionic membrane, a water absorption layer and a filter screen II are sequentially arranged in an internal channel of the cell filtering part; the cell filtering part and the primary filtering part are of cylindrical structures and are matched with each other, and one part of the cell filtering part is inserted into the primary filtering part; the water absorption layer is additionally arranged to absorb redundant water on the ionic membrane, so that the quality of final flaking can be improved.

Description

Technical Field

[0001] The invention relates to the field of cell filtration, in particular to a cell filter. Background Art

[0002] In the TCT examination of cervical cancer, cells need to be extracted and prepared for doctors to observe through a microscope. Cell filters are used in cell extraction. Existing cell filters only extract cells through filter membranes (such as a filter membrane cartridge for cell preparation disclosed in CN210495944U). There will still be a lot of water remaining on the filter membrane, resulting in poor final preparation effect. Summary of the invention

[0003] The present invention provides a cell filter which can solve a problem pointed out in the background art.

[0004] A cell filter, comprising:

[0005] A primary filter portion, wherein a filter screen 1 is disposed in an internal passage thereof; and

[0006] The cell filtration part has an internal channel in which an ion membrane, a water absorption layer and a second filter are sequentially arranged;

[0007] The cell filter part and the primary filter part are both cylindrical structures, and the two are matched with each other, and a part of them is inserted into the primary filter part.

[0008] Preferably, the water absorbing layer is a sponge sheet.

[0009] Preferably, the water absorbing layer at least covers part of the filter holes on the second filter screen.

[0010] Preferably, the second filter screen is an arc-shaped structure, with its convex surface facing the ion membrane.

[0011] Preferably, a boss is provided in the primary filter portion, and the boss is used to separate the ion membrane and the filter screen.

[0012] Compared with the prior art, the present invention has the beneficial effect that the present invention can improve the quality of the final tablet preparation by adding a water absorption layer to absorb excess water on the ion membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure after the combination of the present invention;

[0014] Figure 2 It is a schematic diagram of the structure after the present invention is split;

[0015] Figure 3 is a cross-sectional view of a cell filter according to embodiment 1 of the present invention;

[0016] Figure 4It is a cross-sectional view of the cell filter according to the second embodiment of the present invention.

[0017] Description of reference numerals:

[0018] 1-primary filtration part, 2-cell filtration part, 3-filter screen 1, 4-ion membrane, 5-water absorption layer, 6-filter screen 2, 7-boss. DETAILED DESCRIPTION

[0019] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0020] Embodiment 1

[0021] like Figures 1 to 3 As shown, a cell filter provided by an embodiment of the present invention comprises a primary filter part 1 and a cell filter part 2, both of which are cylindrical structures, one end of the cell filter part is inserted into the primary filter part, and the other end of the cell filter part is connected to a negative pressure device, and the cell filter part and the primary filter part are closely matched to provide an environment to absorb excess liquid;

[0022] A filter 3 is provided in the internal channel of the primary filter part for the purpose of preliminary filtering of residual tissue;

[0023] The internal channel of the cell filtration part is provided with an ion membrane 4, a water absorption layer 5 and a second filter screen 6 in sequence. The water absorption layer can absorb the excess liquid on the ion membrane to improve the quality of the preparation. The second filter screen has filter holes, and the area of ​​the water absorption layer should at least be sufficient to cover part of the filter holes.

[0024] The water absorbing layer in this embodiment is a sponge sheet;

[0025] like Figure 3 As shown, a boss 7 is provided in the internal channel connecting the primary filter part and the cell filter part, and the boss is used to prevent the ion membrane from directly contacting the filter screen 1, so as to avoid cells remaining on the filter screen 1;

[0026] Before use, insert the cell filter into the primary filter (the cell filter is located on the lower side), connect the bottom of the cell filter to the negative pressure device, start the negative pressure device, and then add the cell liquid to be filtered from the top of the primary filter. Under the action of negative pressure, the cell liquid passes through filter one to reach the ion membrane, and the cells are retained on the ion membrane. The liquid passes through filter two and enters the negative pressure device. Finally, the glass slide is brought into contact with the ion membrane to complete the cell acquisition.

[0027] Embodiment 2

[0028] like Figure 1 , Figure 2 and Figure 4As shown, this embodiment provides a cell filter, which includes a primary filter part 1 and a cell filter part 2, both of which are cylindrical structures, one end of the cell filter part is inserted into the primary filter part, and the other end of the cell filter is connected to a negative pressure device, and the cell filter part and the primary filter part are closely matched to provide an environment to absorb excess liquid;

[0029] A filter 3 is provided in the internal channel of the primary filter part for the purpose of preliminary filtering of residual tissue;

[0030] The internal channel of the cell filtration part is provided with an ion membrane 4, a water absorption layer 5 and a second filter screen 6 in sequence. The water absorption layer can absorb the excess liquid on the ion membrane to improve the quality of the preparation. The second filter screen has filter holes, and the area of ​​the water absorption layer should at least be sufficient to cover part of the filter holes.

[0031] like Figure 4 As shown, a boss 7 is provided in the internal channel connecting the primary filter part and the cell filter part, and the boss is used to prevent the ion membrane from directly contacting the filter screen 1, so as to avoid cells remaining on the filter screen 1;

[0032] The filter screen 2 of this embodiment is an arc-shaped structure (which can be flexible or hard), and its convex surface faces the ion membrane, and the shape of the ion membrane is the same as that of the filter screen 2;

[0033] The water absorption layer of this embodiment is a hollow sponge sheet (i.e., there is a vacancy in the center). Under negative pressure, due to the small resistance in the middle and large resistance on both sides, the cells are more concentrated in the middle of the ion membrane. In addition, due to the curved ion membrane, when using a glass slide to take cells, compared with the cell glass slide made by Example 1, the cells in this embodiment are more concentrated, and the detection effect is higher;

[0034] In addition, the water-absorbing layer can also be the same as that of the embodiment. In this case, the filter screen 2 is made of a flexible material, and the number of cells adhered to the filter screen can be determined according to the force applied by the glass slide to the ion membrane (the larger the contact area, the more cells).

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit and essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A cell filter, characterized in that include: A primary filter section, wherein a filter screen 1 is arranged in an internal passage thereof; as well as The cell filtration part has an internal channel in which an ion membrane, a water absorption layer and a second filter are sequentially arranged; The cell filter part and the primary filter part are both cylindrical structures, and the two are matched with each other, and a part of them is inserted into the primary filter part.

2. The cell filter according to claim 1, characterized in that The water absorbing layer is a sponge sheet.

3. The cell filter according to claim 1, characterized in that The water absorbing layer at least covers part of the filter holes on the second filter screen.

4. The cell filter according to claim 1, characterized in that The second filter screen is an arc-shaped structure, and its convex surface faces the ion membrane.

5. The cell filter according to claim 1, characterized in that A boss is arranged in the primary filter part, and the boss is used to separate the ion membrane and the filter screen.

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