CN216755570U

CN216755570U - Cell sample suction type filtering device

Info

Publication number: CN216755570U
Application number: CN202220413349.8U
Authority: CN
Inventors: 李仲娟; 杨细凤; 武欢; 曹得华
Original assignee: Wuhan Landing Medical High Tech Co ltd
Current assignee: Wuhan Landing Medical High Tech Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-06-17
Anticipated expiration: 2032-02-28

Abstract

The utility model provides a cell sample suction type filtering device which comprises a structure main body, wherein the lower end of the structure main body is provided with a liquid suction pipe and a filtering cavity, a filtering screen is arranged in the filtering cavity, a liquid outlet nozzle is arranged below the filtering screen and provided with a one-way valve, the cell sample suction type filtering device is also provided with the liquid suction pipe, the inlet end of the liquid suction pipe extends into a sample bottle, the outlet end of the liquid suction pipe is arranged above the filtering screen in the filtering cavity, the upper end of the structure main body is provided with a telescopic organ structure, and the interior of the organ structure is communicated with the interior of the filtering cavity.

Description

Cell sample suction type filtering device

Technical Field

The utility model relates to the field of cell extraction and filtration, in particular to a cell sample suction type filtering device.

Background

In order to increase the filtration rate, a pressure filtration method is generally adopted for the filter, such as that described in a syringe for nuclear medicine of chinese patent CN 108042903 a, and pressure filtration is realized by combining the syringe and the filter, but because the volume of the medical syringe is limited, the volume-fixed pressure filtration device is only suitable for filtering a sample with a small volume, and thus a continuous cell filtration device which is not limited by the volume of the pressure device is needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cell sample suction type filtering device, which solves the problems of small sample capacity and low filtering efficiency of a single filterable sample of a traditional cell sample extracting device.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides a cell sample suction formula filter equipment, includes the main structure body, and the main structure body lower extreme is equipped with pipette and filter chamber, is equipped with the filter screen in the filter chamber, and the filter screen below is equipped with out the liquid mouth, and it is equipped with the check valve to go out the liquid mouth, still is equipped with the pipette, and in the entry end of pipette stretched into the sample bottle, the exit end of pipette was established in filter chamber filter screen top, and the main structure body upper end is equipped with telescopic organ structure, inside and the inside intercommunication of filter chamber of organ structure.

In the preferred scheme, the structure main part includes the structure piece, and structure piece top is equipped with detachable and goes up the shrouding, goes up the shrouding and forms the inner chamber that sinks with the cooperation of structure piece, and the inner chamber that sinks is equipped with first intercommunicating pore and second intercommunicating pore, and the inner chamber that sinks is through first intercommunicating pore and organ structure inside intercommunication, and the exit end of pipette is established in second intercommunicating pore department, and second intercommunicating pore diameter is greater than the exit end diameter of pipette, and the inner chamber that sinks passes through second intercommunicating pore and filter chamber intercommunication.

In the preferred scheme, the structure piece lower extreme is equipped with the sample interface, and the sample interface cup joints with the sample bottle upper end, and the inner chamber that sinks still is equipped with the third intercommunicating pore, and the entry end of pipette passes in the third intercommunicating pore is in order to stretch into the sample bottle, and the structure piece still is equipped with the air vent, and the sample bottle is inside to be passed through air vent and outside intercommunication.

In the preferred scheme, still be equipped with the sealing plug between third intercommunicating pore and the imbibition pipe outer wall, the sealing plug cup joints at 4 outer walls, and the sealing plug outer wall is the toper, and the gap between sealing plug outer wall shutoff imbibition pipe outer wall and the third intercommunicating pore.

In a preferred scheme, a filter valve is arranged in the vent hole of the structure block.

In the preferred scheme, the lower end of the structure block is also provided with a detachable lower blanking cover, the lower blanking cover is arranged below the filter cavity, a sealing gasket is arranged below the filter screen, the upper end of the lower blanking cover is tightly pressed against the sealing gasket, the liquid outlet nozzle is arranged at the lower end of the lower blanking cover, and the check valve is arranged between the liquid outlet nozzle and the filter cavity.

The utility model has the beneficial effects that: the filtration rate is improved by adopting pressurized filtration; the device is provided with a large-capacity sample bottle, and the capacity of the cell sample which can be filtered at one time is large; the sample bottle and the filter screen are designed to be conveniently disassembled and assembled, so that the installation and the replacement are easy, the time is saved, and the use difficulty is reduced.

Drawings

The utility model is further illustrated by the following figures and examples.

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is an exploded schematic view of the present invention.

In the figure: a structural body 1; a structural block 101; an upper closure plate 102; a screen 103; a lower blanking cap 104; a liquid outlet 105; a first seal ring 106; a second seal ring 107; a seal gasket 108; a sample bottle 2; an organ structure 3; a pull ring 301; a pipette 4; a sealing plug 5; a sinking inner cavity 6; a filter chamber 7; a check valve 8; a filter valve 9; a sample interface 10.

Detailed Description

As shown in the figures 1-2, a cell sample suction type filtering device comprises a structure body 1, wherein the lower end of the structure body 1 is provided with a liquid suction pipe 4 and a filtering cavity 7, a filtering screen 103 or a filtering sheet is arranged in the filtering cavity 7, the diameter of a filtering hole is 30-100um, a liquid outlet 105 is arranged below the filtering screen 103, the liquid outlet 105 is communicated with the inside of the filtering cavity 7, the liquid outlet 105 is provided with a one-way valve 8 capable of discharging liquid in a one-way manner, the J-shaped liquid suction pipe 4 is also arranged, the inlet end of the liquid suction pipe 4 is longer and extends into a sample bottle 2 to be close to the bottom, the outlet end of the liquid suction pipe 4 is shorter and is arranged above the filtering screen 103 in the filtering cavity 7, a telescopic organ structure 3 is arranged at the upper end of the structure body 1, a pull ring 301 convenient to operate is arranged at the upper end of the organ structure 3, the inside of the organ structure 3 is communicated with the inside of the filtering cavity 7, when the organ structure is stretched, the volume of the organ structure is increased, the pressure in the filtering cavity 7 is reduced, the air pressure in the sample bottle 2 is large, the sample liquid is pressed into the filter cavity 7, the liquid can be filtered by the dead weight, and the organ structure 3 can be compressed to pressurize the filter cavity 7, so that the sample filtering efficiency is improved.

In the preferred scheme, structure main body 1 includes structure piece 101, structure piece 101 top is equipped with detachable and goes up shrouding 102, go up shrouding 102 and structure piece 101 cooperation formation inner chamber 6 that sinks, structure piece 101 is equipped with the ring channel, be equipped with second sealing washer 107 in the ring channel, inner chamber 6 that sinks is equipped with first intercommunicating hole and second intercommunicating hole, inner chamber 6 that sinks is through first intercommunicating hole and organ structure 3 inside intercommunication, the exit end of pipette 4 is established in second intercommunicating hole department, second intercommunicating hole diameter is greater than the exit end diameter of pipette 4 or sets up the grooving of ventilating at second intercommunicating hole outer wall, inner chamber 6 that sinks passes through second intercommunicating hole and filter chamber 7 intercommunication, inner chamber 6 that sinks can be used for placing the horizontal part of pipette 4 of J type.

In the preferred scheme, the lower end of the structure block 101 is provided with a sample interface 10, the sample interface 10 is sleeved with the upper end of a sample bottle 2, a flange of the sample bottle 2 is provided with a first sealing ring 106, the sinking inner cavity 6 is also provided with a third communicating hole, the inlet end of the pipette 4 penetrates through the third communicating hole to extend into the sample bottle 2, the structure block 101 is also provided with a vent hole, and the inside of the sample bottle 2 is communicated with the outside through the vent hole.

In the preferred scheme, still be equipped with sealing plug 5 between third intercommunicating pore and the 4 outer walls of pipette, sealing plug 5 cup joints at 4 outer walls, and rubber or silica gel can be chooseed for use to sealing plug 5 material, and sealing plug 5 outer walls is the toper, and sealing plug 5 seals down more tightly more, the gap between 5 outer walls shutoff pipette 4 outer walls of sealing plug and the third intercommunicating pore.

In a preferred scheme, a filter valve 9 is arranged in a vent hole of the structure block 101 to prevent dust and impurities from entering and polluting a sample.

In the preferred scheme, the lower end of the structure block 101 is further provided with a detachable lower blocking cover 104, the lower blocking cover 104 is arranged below the filter cavity 7, a sealing gasket 108 is arranged below the filter screen 103, the upper end of the lower blocking cover 104 compresses the sealing gasket 108, the liquid outlet nozzle 105 is arranged at the lower end of the lower blocking cover 104, and the one-way valve 8 is arranged between the liquid outlet nozzle 105 and the filter cavity 7.

The sample bottle 2, the lower blocking cover 104 and the structure block 101 are in threaded connection, four corners of the upper sealing plate 102 are connected with the structure block 101 through bolts, the pipette 4 is very convenient to draw out after the upper sealing plate 102 is detached, the sample bottle 2, the pipette 4 and the filter screen 103 are convenient to disassemble, assemble and replace, and other parts of the device can be used continuously after being detached and cleaned and disinfected.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.

Claims

1. A cell sample suction type filter device is characterized in that: the device comprises a structure main body (1), wherein a liquid suction pipe (4) and a filter cavity (7) are arranged at the lower end of the structure main body (1), a filter screen (103) is arranged in the filter cavity (7), a liquid outlet nozzle (105) is arranged below the filter screen (103), a one-way valve (8) is arranged on the liquid outlet nozzle (105), the liquid suction pipe (4) is further arranged, the inlet end of the liquid suction pipe (4) extends into a sample bottle (2), the outlet end of the liquid suction pipe (4) is arranged above the filter screen (103) in the filter cavity (7), a telescopic organ structure (3) is arranged at the upper end of the structure main body (1), and the inside of the organ structure (3) is communicated with the inside of the filter cavity (7).

2. The cytological specimen suction filtration device of claim 1, wherein: structure main part (1) is including structure piece (101), structure piece (101) top is equipped with detachable and goes up shrouding (102), go up shrouding (102) and structure piece (101) cooperation formation inner chamber (6) that sink, inner chamber (6) that sink is equipped with first intercommunicating hole and second intercommunicating hole, inner chamber (6) that sink is through first intercommunicating hole and organ structure (3) inside intercommunication, the exit end of pipette (4) is established in second intercommunicating hole department, second intercommunicating hole diameter is greater than the exit end diameter of pipette (4), inner chamber (6) that sink is through second intercommunicating hole and filter chamber (7) intercommunication.

3. The cytological specimen suction filtration device of claim 2, wherein: the lower end of the structure block (101) is provided with a sample interface (10), the sample interface (10) is sleeved with the upper end of the sample bottle (2), the sinking inner cavity (6) is further provided with a third communicating hole, the inlet end of the pipette (4) penetrates through the third communicating hole to extend into the sample bottle (2), the structure block (101) is further provided with a vent hole, and the interior of the sample bottle (2) is communicated with the outside through the vent hole.

4. The cytological specimen suction filtration device of claim 3, wherein: still be equipped with sealing plug (5) between third intercommunicating pore and pipette (4) outer wall, sealing plug (5) cup joint at 4 outer walls, and sealing plug (5) outer wall is the toper, sealing plug (5) outer wall shutoff pipette (4) outer wall and the gap between the third intercommunicating pore.

5. The cytological specimen suction filtration device of claim 3, wherein: a filter valve (9) is arranged in the vent hole of the structure block (101).

6. The cytological specimen suction filtration device of claim 1, wherein: the lower end of the structure block (101) is also provided with a detachable lower blocking cover (104), the lower blocking cover (104) is arranged below the filtering cavity (7), a sealing gasket (108) is arranged below the filtering net (103), the upper end of the lower blocking cover (104) is tightly pressed against the sealing gasket (108), the liquid outlet nozzle (105) is arranged at the lower end of the lower blocking cover (104), and the one-way valve (8) is arranged between the liquid outlet nozzle (105) and the filtering cavity (7).