CN117883885A

CN117883885A - Gas filtering device

Info

Publication number: CN117883885A
Application number: CN202311718248.7A
Authority: CN
Inventors: 李冶夫
Original assignee: Singularity Medical Technology Guangzhou Co ltd
Current assignee: Singularity Medical Technology Guangzhou Co ltd
Priority date: 2023-12-13
Filing date: 2023-12-13
Publication date: 2024-04-16

Abstract

The invention provides a gas filtering device for filtering water in gas supplied to an oxygenator, which comprises a containing bin, wherein the containing bin is provided with a gas inlet, a water storage cavity and a gas outlet; the air inlet, the water storage cavity and the air outlet are sequentially communicated; the water storage cavity is positioned below the air outlet, and the air outlet is communicated with the air inlet of the oxygenator; the filter component is connected to the inner wall of the accommodating bin and comprises a filter screen, the aperture range of the filter screen is 0.22-0.30 mu m, and the filter screen covers the air outlet and is used for blocking moisture in gas flowing through the filter screen. The gas filtering device enables gas supplied to the oxygenator to enter the water storage cavity through the gas inlet, and the gas is input into the oxygenator from the gas outlet after passing through the filtering component, so that the water content of the gas input into the oxygenator is reduced, and meanwhile, the filtered water in the gas is concentrated in the water storage cavity, so that unified treatment of personnel is facilitated.

Description

Gas filtering device

Technical Field

The invention relates to the field of medical equipment, in particular to a gas filtering device.

Background

In the related art, when the oxygenator heats blood, the temperature of the gas entering the gas inlet is too high, so that water is generated in the exhaust channel with lower temperature, and the water may block the exhaust hole or the hollow fiber membrane, thereby affecting the performance of the oxygenator, and the gas filter on the market can only remove dust on the gas entering the oxygenator.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the invention proposes a gas filtering device capable of filtering out water in the gas supplied to the oxygenator.

A gas filtering apparatus according to an embodiment of the first aspect of the present invention for filtering out water in a gas supplied to an oxygenator, comprises:

the accommodating bin is provided with an air inlet, a water storage cavity and an air outlet; the air inlet, the water storage cavity and the air outlet are sequentially communicated; the water storage cavity is positioned below the air outlet, and the air outlet is communicated with the air inlet of the oxygenator;

the filter assembly is connected to the inner wall of the accommodating bin and comprises a filter screen, the aperture range of the filter screen is 0.22-0.30 mu m, and the filter screen covers the air outlet and is used for blocking moisture in gas flowing through the filter screen.

The gas filtering device provided by the embodiment of the invention has at least the following beneficial effects: the gas filtering device enables gas supplied to the oxygenator to enter the water storage cavity through the gas inlet, and the gas is input into the oxygenator from the gas outlet after passing through the filtering component, so that the water content of the gas input into the oxygenator is reduced, the performance of the oxygenator is ensured, and meanwhile, the filtered water in the gas is concentrated in the water storage cavity, so that unified treatment of personnel is facilitated.

According to some embodiments of the invention, the gas filtering device further comprises a check valve, the housing further comprises a gas inlet channel, the check valve is connected to the inner wall of the gas inlet channel and divides the gas inlet channel into a first gas inlet section and a second gas inlet section, the first gas inlet section is communicated with the gas inlet, the second gas inlet section is communicated with the water storage cavity, gas in the first gas inlet section can flow to the second gas inlet section through the check valve, and the check valve prevents gas in the second gas inlet section from flowing to the first gas inlet section.

According to some embodiments of the invention, the holding compartment is made of a transparent material.

According to some embodiments of the invention, the gas filtering device comprises a detection cartridge made of transparent material, having a detection chamber and an adsorption hole; the detection cavity is internally provided with a color-changing material, the water storage cavity is communicated with the detection cavity through the adsorption hole, and the adsorption hole is positioned above the water storage cavity.

According to some embodiments of the invention, the gas filtering device comprises a detection assembly comprising an alarm indicator and two conductive portions electrically connected to the alarm indicator, the two conductive portions being inserted into the color-changing material, the alarm indicator being disposed outside the containing compartment; the alarm indicator is used for sending out a signal when the resistance between the two conductive parts changes.

According to some embodiments of the invention, the accommodating bin is further provided with a slot, the slot is communicated with the water storage cavity and the external space, and the filtering component is detachably inserted into the slot.

According to some embodiments of the invention, the inner wall of the receiving compartment has a guide slot, the filter assembly further comprises a fixture having a vent, the filter screen being connected to the fixture and covering the vent; when the filter component is inserted into the slot, the guide groove accommodates the fixing piece.

According to some embodiments of the invention, the containing bin further has an air outlet channel, and the air outlet, the air outlet channel and the water storage cavity are sequentially communicated; the air outlet channel comprises a plurality of bending sections, and the extending direction of the air outlet channel is changed at the bending sections.

According to some embodiments of the invention, the filter screen is made of plastic.

According to some embodiments of the invention, the gas filter device further comprises a drain positioned below the gas outlet conduit, the drain defining a drain opening, the drain being connected to the receiving bin, the drain opening being in communication with the water storage cavity.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic view of a gas filtration device according to some embodiments of the present invention;

FIG. 2 is an overall schematic view of a gas filtration device according to some embodiments of the present invention with a housing front shell removed;

FIG. 3 is a front view of a gas filtration device with a housing cartridge front shell removed in accordance with some embodiments of the present invention;

FIG. 4 is a cross-sectional view of a gas filtration device according to some embodiments of the invention;

FIG. 5 is an enlarged view of a portion of the view shown at A in FIG. 4;

FIG. 6 is a cross-sectional view of a gas filtration device with a detection cartridge and detection assembly removed in accordance with some embodiments of the present invention.

Reference numerals:

the housing bin 100, the front case 100a, the rear case 100b, the air inlet 110, the air inlet channel 120, the first air inlet section 120a, the second air inlet section 120b, the water storage chamber 130, the air outlet channel 140, the bent section 140a, the air outlet 150, the mounting groove 160, the slot 170, the guide groove 180, the drain 190, the drain 191, the filter assembly 200, the filter screen 210, the fixing member 220, the air vent 221, the check valve 300, the detection bin 400, the detection chamber 410, the adsorption hole 420, the color change material 430, the detection assembly 500, the alarm indicator 510, and the conductive part 520.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a number is one or more, the meaning of a number is two or more, and greater than, less than, exceeding, etc. are understood to exclude the present number, and the meaning of a number is understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

In the description of the present invention, the descriptions of the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The invention discloses a gas filtering device, which is used for filtering out water in gas provided to an oxygenator, and comprises a containing bin 100 and a filtering component 200, wherein the containing bin 100 is provided with a gas inlet 110, a water storage cavity 130 and a gas outlet 150; the air inlet 110, the water storage cavity 130 and the air outlet 150 are sequentially communicated; the water storage cavity 130 is positioned below the air outlet 150, and the air outlet 150 is used for being communicated with an air inlet of the oxygenator; the filter assembly 200 is coupled to the inner wall of the receiving chamber 100, and the filter assembly 200 includes a filter screen 210 having a pore size ranging from 0.22 to 0.30 μm, the filter screen 210 covering the gas outlet 150 for blocking moisture in the gas flowing through the filter screen 210.

Specifically, according to some embodiments of the present invention, the housing compartment 100 of the gas filtering device is composed of a front case 100a and a rear case 100b, as shown in fig. 1 and 2, wherein the front case 100a of the housing compartment 100 is removed from the gas filtering device shown in fig. 2 for convenience of presentation to those skilled in the art, and the front case 100a and the rear case 100b together form the housing compartment 100 when the gas filtering device of the present invention is actually used, so that leakage of gas from the gas filtering device is prevented. The gas can enter the water storage cavity 130 from the gas inlet 110 of the container 100 and then enter the oxygenator through the gas outlet 150; when the gas in the water storage cavity 130 flows out of the gas outlet 150, the filter screen 210 covering the gas outlet 150 is arranged in the accommodating bin 100, and the filter screen 210 with the aperture range controlled to be 0.22-0.30 μm can filter the moisture in the air, so that the moisture in the air flowing out of the gas outlet 150 is reduced, the moisture content of the air entering the oxygenator is reduced, and condensed water is less likely to be produced in an exhaust channel in the oxygenator; the water blocked by the filter screen 210 naturally flows back to the water storage cavity 130 under the influence of gravity; those skilled in the art can increase the volume of the water storage chamber 130 according to the humidity in the air and the air intake amount of the air filtering device, so that the water storage chamber 130 can store more water.

It should be noted that, those skilled in the art may also adjust the position of the air inlet 110 according to actual requirements. According to some embodiments of the present invention, the air inlet 110 may be disposed at the bottom of the water storage chamber 130. Through the above scheme, when a certain amount of water is contained in the water storage cavity 130, the air input into the water storage cavity 130 is raised due to buoyancy, and is not easy to flow back from the air inlet 110. As a preferred way, according to other embodiments of the present invention, please refer to fig. 2, the air inlet 110 may be disposed above the water storage cavity 130. Through the scheme, the contact area between the air and the water in the water storage cavity 130 can be reduced, so that the humidity of the air in the water storage cavity 130 is reduced, and the water filtering effect of the filter screen 210 is better.

Further, the filter screen 210 is made of plastic. The plastic may be PE (polyethylene), PT (polypropylene), PET (polyethylene terephthalate), PTFE (polytetrafluoroethylene), or the like. The filter screen 210 using the above material has better chemical stability, can be used for a longer time, and the filter screen 210 using the above material is convenient to process in production.

Further, the gas filtering device further includes a check valve 300, the accommodating chamber 100 further has a gas inlet channel 120, the check valve 300 is connected to an inner wall of the gas inlet channel 120 and divides the gas inlet channel 120 into a first gas inlet section 120a and a second gas inlet section 120b, the first gas inlet section 120a is communicated with the gas inlet, the second gas inlet section 120b is communicated with the water storage cavity 130, the gas of the first gas inlet section 120a can flow to the second gas inlet section 120b through the check valve 300, and the check valve 300 prevents the gas of the second gas inlet section 120b from flowing to the first gas inlet section 120a.

Specifically, referring to fig. 2, 3 and 4, according to some embodiments of the present invention, the air inlet 110 and the water storage cavity 130 are communicated through the air inlet channel 120, and the check valve 300 is embedded in the inner wall of the air inlet channel 120 and divides the air inlet channel 120 into a first air inlet section 120a and a second air inlet section 120b. In the process of delivering the gas to the oxygenator, the gas delivery rate provided to the oxygenator may be changed and a reverse direction gas flow is formed, and through the above scheme, the check valve 300 can prevent the gas from flowing back and prevent the gas from flowing out of the gas inlet 110.

In some embodiments, the check valve 300 includes two elastic diaphragms disposed opposite to each other and having a vent hole, and when the gas in the first gas inlet section 120a enters the check valve 300, the two elastic diaphragms can be stretched and pass through the vent hole, and the gas in the second gas inlet section 120b cannot flow back to the first gas inlet section 120a because the elastic diaphragms cannot be stretched. The check valve 300 may also be a ball-type check valve 300 or a needle-type check valve 300 without departing from the inventive concept.

Further, the receiving bin 100 is made of a transparent material. The transparent accommodating bin 100 can directly display the water content in the water storage cavity 130, so that maintenance personnel can directly judge the water content in the accommodating bin 100.

Further, the gas filtering device includes a detection chamber 400, the detection chamber 400 being made of a transparent material and having a detection chamber 410 and an adsorption hole 420; the detection cavity 410 is internally provided with a color-changing material 430, the water storage cavity 130 is communicated with the detection cavity 410 through an adsorption hole 420, and the adsorption hole 420 is positioned above the water storage cavity 130. Specifically, referring to fig. 3 and 4, the color-changing material 430 fills the detection cavity 410. The color-changing material 430 may be sodium peroxide, anhydrous copper sulfate, anhydrous cobalt chloride, or other materials that change color when exposed to water. A person skilled in the art can adjust the height of the adsorption hole 420 according to the actual requirement, when the water level of the water in the water storage cavity 130 reaches the height of the adsorption hole 420, the color-changing material 430 in the detection cavity 410 can absorb water and change color, so as to remind the medical staff that the water in the water storage bin reaches a certain capacity, and facilitate the medical staff to maintain or replace the gas filtering device in time.

Further, the gas filtering device comprises a detecting assembly 500, the detecting assembly 500 comprises an alarm indicator 510 and two conductive parts 520, the two conductive parts 520 are electrically connected to the alarm indicator 510, the two conductive parts 520 are inserted into the color-changing material 430, and the alarm indicator 510 is arranged outside the accommodating bin 100; the alarm indicator 510 is used to signal when the resistance between the two conductive portions 520 changes. Specifically, referring to fig. 3, 4 and 5, when the water level in the water storage cavity 130 reaches the height of the adsorption hole 420, the color-changing material 430 in the detection cavity 410 absorbs water, and its own resistance is changed due to the absorbed water. The alarm indicator 510 is capable of sensing a change in resistance of the color change material 430 between the two conductive portions 520 to thereby signal. The signal sent by the alarm indicator 510 may be an optical signal or an acoustic signal. Illustratively, a light tube may be provided within the alarm indicator 510 to alert the healthcare worker that the water level within the cartridge 100 has reached a certain value by illuminating. As a preferable scheme, a buzzer can be arranged in the alarm indicator 510, and the alarm indicator 510 can make the buzzer give an alarm sound to remind medical staff; compared with the scheme of reminding the medical staff by using the color-changing material 430, the alarm is sent by using the buzzer, so that the alarm is easier to attract the attention of the medical staff, and the reminding effect is better.

According to some embodiments of the present invention, the detection assembly 500 is connected to the outside of the detection cartridge 400, the detection cartridge 400 is detachably connected to the receiving cartridge 100, and as shown in fig. 4 and 6, a mounting groove 160 for receiving the detection cartridge 400 is provided above the receiving cartridge 100, the detection cartridge 400 is slidably mounted in the mounting groove 160, and when the color-changing material 430 in the detection cartridge 400 needs to be replaced, a maintenance person can directly take out the detection cartridge 400 from the mounting groove 160.

According to some embodiments of the present invention, the two conductive parts 520 may be directly disposed above the water storage cavity 130 without departing from the inventive concept, and when the water level of the water in the water storage cavity 130 reaches a certain height, the water submerges the two conductive parts 520, so that the resistance between the two conductive parts 520 is changed, and finally the alarm indicator 510 emits a signal.

Further, the accommodating bin 100 further has a slot 170, the slot 170 communicates with the water storage cavity 130 and the external space, and the filter assembly 200 is detachably inserted into the slot 170. Specifically, please refer to fig. 2 and 3, wherein fig. 3 does not show the filter assembly 200, the filter assembly 200 can be installed in the accommodating chamber 100 through the slot 170, and the filter assembly 200 can be taken out from the slot 170 when it needs to be replaced. To facilitate the disassembly of the filter assembly 200, the inner wall of the receiving bin 100 has a guide groove 180, the filter assembly 200 further includes a fixing member 220, the fixing member 220 has a vent 221, and the filter screen 210 is connected to the fixing member 220 and covers the vent 221; the guide groove 180 accommodates the fixing member 220 when the filter assembly 200 is inserted into the slot 170. Referring to fig. 2 and 3, a guide groove 180 extending in the left-right direction is provided in the accommodating chamber 100; the guide groove 180 can restrict the movement of the fixing member 220 in the up-down direction during the insertion of the fixing member 220 into the receiving bin 100; the guide groove 180 can fix the position of the fixing member 220 in the up-down direction when the filter assembly 200 is inserted at the insertion groove 170. The filter screen 210 connected to the fixing member 220 covers the vent hole of the fixing member 220, so that the fixing member 220 can fix the shape of the filter screen 210, and the filter screen 210 cannot completely cover the air outlet 150 when the filter assembly 200 is inserted into the slot 170, thereby reducing the filtering function of the filter assembly 200.

Further, the accommodating bin 100 is further provided with an air outlet channel 140, and the air outlet 150, the air outlet channel 140 and the water storage cavity 130 are sequentially communicated; the air outlet channel 140 includes a plurality of bending sections 140a, and the air outlet channel 140 changes the extending direction at the bending sections 140a. Specifically, referring to fig. 2, 3 and 4, according to some embodiments of the present invention, the water storage cavity 130 is communicated with the air outlet 150 through the air outlet channel 140, and the air outlet channel 140 includes two bending sections 140a. Through the scheme, when gas flows in the gas outlet pipeline, the flowing direction can be changed due to the bending section 140a, so that the turbulent flow phenomenon of the gas flow input into the oxygenator is avoided, the generation of dead space can be reduced, and the treatment effect of the oxygenator is ensured. Those skilled in the art may provide more bending sections 140a in the air outlet channel 140 to further reduce the generation of dead space without departing from the inventive concept.

Further, the gas filtering device further comprises a water draining part 190, the water draining part 190 is positioned below the gas outlet pipeline, the water draining part 190 defines a water draining outlet 191, the water draining part 190 is connected to the accommodating bin 100, and the water draining outlet 191 is communicated with the water storage cavity 130. Specifically, referring to fig. 1 and 2, according to some embodiments of the present invention, when the water level in the water storage chamber 130 reaches the height of the water outlet 191, water exceeding the water level can flow to the outside through the water outlet 191. According to some embodiments of the present invention, a conduit may also be connected to the drain 191, through which water in the receiving bin 100 is timely drawn out, avoiding water spillage. As a preferred embodiment, according to some embodiments of the present invention, a sealing member may be further provided at the drain portion 190, and the sealing member may be detachably connected to the drain port 191, so that the sealing member can seal the drain port 191, thereby preventing the gas inputted into the receiving bin 100 from leaking from the drain port 191 in an operating state.

The technical scheme that the color-changing material 430 is arranged in the detection bin 400 and the detection assembly 500 is arranged to remind medical staff is described above, when the medical staff receives the corresponding reminding, the sealing element can be directly detached after the work of the gas filtering device is stopped, and the sealing element is installed on the water draining part 190 after the water in the water storage cavity 130 completely flows out.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention. Furthermore, embodiments of the invention and features of the embodiments may be combined with each other without conflict.

Claims

1. A gas filtering device for filtering water from a gas supplied to an oxygenator, comprising:

2. The gas filtering device of claim 1, further comprising a one-way valve, wherein the housing further has an inlet passage, wherein the one-way valve is connected to an inner wall of the inlet passage and separates the inlet passage into a first inlet section and a second inlet section, wherein the first inlet section is in communication with the inlet port, wherein the second inlet section is in communication with the water storage chamber, wherein gas in the first inlet section is capable of flowing through the one-way valve to the second inlet section, and wherein the one-way valve prevents gas in the second inlet section from flowing to the first inlet section.

3. The gas filtering device according to claim 1, wherein the containing compartment is made of a transparent material.

4. A gas filtration device according to claim 3, comprising a detection cartridge made of transparent material, having a detection chamber and an adsorption aperture; the detection cavity is internally provided with a color-changing material, the water storage cavity is communicated with the detection cavity through the adsorption hole, and the adsorption hole is positioned above the water storage cavity.

5. The gas filtering device according to claim 4, comprising a detection assembly comprising an alarm indicator and two conductive portions electrically connected to the alarm indicator, the two conductive portions being interposed with the color-changing material, the alarm indicator being disposed outside the containing compartment; the alarm indicator is used for sending out a signal when the resistance between the two conductive parts changes.

6. The gas filtering device according to claim 1, wherein the accommodating bin is further provided with a slot, the slot is communicated with the water storage cavity and the external space, and the filtering component is detachably inserted into the slot.

7. The gas filtering device of claim 6, wherein the inner wall of the receiving compartment has a guide slot, the filter assembly further comprising a fixture having a vent, the filter screen being connected to the fixture and covering the vent; when the filter component is inserted into the slot, the guide groove accommodates the fixing piece.

8. The gas filtering device according to claim 1, wherein the accommodating bin is further provided with a gas outlet channel, and the gas outlet, the gas outlet channel and the water storage cavity are sequentially communicated; the air outlet channel comprises a plurality of bending sections, and the extending direction of the air outlet channel is changed at the bending sections.

9. The gas filtering device of claim 1, wherein the filter mesh is made of plastic.

10. The gas filtration device of claim 1, further comprising a drain positioned below the outlet conduit, the drain defining a drain outlet, the drain being connected to the containment bin, the drain outlet being in communication with the water storage cavity.