CN215900484U - Medical suction apparatus - Google Patents
Medical suction apparatus Download PDFInfo
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- CN215900484U CN215900484U CN201990001032.XU CN201990001032U CN215900484U CN 215900484 U CN215900484 U CN 215900484U CN 201990001032 U CN201990001032 U CN 201990001032U CN 215900484 U CN215900484 U CN 215900484U
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
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- Animal Behavior & Ethology (AREA)
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Abstract
The medical suction apparatus includes: a negative pressure container; an air discharge unit (air discharge member (4)) capable of discharging air to the outside and thereby making the negative pressure container negative in pressure; a negative pressure container-side check valve (8) disposed between the negative pressure container and the exhaust member (4); and an exhaust-side check valve (7) disposed between the exhaust member (4) and the outside. When the air discharge member (4) returns from the second state to the first state, the negative pressure container-side check valve (8) allows air to be discharged from the negative pressure container to the air discharge member (4), and when the air discharge member (4) changes from the first state to the second state, air is prevented from being sucked from the air discharge member (4) to the negative pressure container. The negative pressure container-side check valve (8) increases the pressure of the negative pressure container by sucking and discharging liquid to the medical suction instrument, and allows air to be discharged from the negative pressure container to the air discharge member (4) when the air discharge member (4) is in the first state.
Description
Technical Field
The present invention relates to a medical suction apparatus having a one-way valve.
The present application claims priority based on Japanese patent application No. 2018-191854, filed on 10.10.2018, and introduces the contents thereof to the present application.
Background
In order to suck and discharge a body fluid (also referred to as "liquid discharge") from a human body through a tube, a medical suction instrument having a negative pressure container for sucking a body fluid is generally used. Such a medical suction apparatus is provided with a check valve for generating negative pressure by discharging air in a negative pressure container to the outside.
For example, patent document 1 discloses a medical suction device including an exhaust member (described as a "pump portion" in the same document) that is elastically deformable so as to be capable of being pressed and restored, and two one-way valves.
One check valve is a check valve provided at the exhaust port of the exhaust member to allow air to be exhausted and prevent air from being sucked. The other check valve is a check valve that is provided at a connection portion with a vent member in a negative pressure container (described as a "suction container" in the same document), and allows air to flow from the inside of the negative pressure container to the inside of the vent member, but prevents air from flowing backward from the inside of the vent member to the inside of the negative pressure container.
Although the structure of the other check valve is not described in detail in patent document 1, a film that is elastically deformable is generally used as the structure of the conventional check valve.
As for the structure of the conventional check valve, specifically, the following structure: the connecting portion is provided with a communication hole as a transverse hole for communicating the inside of the negative pressure container with the inside of the vent member, and the communication hole is covered and sealed by pressing the film in an elastically deformed state in the diameter expansion direction against the periphery of the communication hole.
The check valve constituted by the film blocks the communicating hole by the film receiving surface pressure at the time of pressing. On the other hand, the check valve allows air to flow from the inside of the negative pressure container to the inside of the vent member by extending the membrane in the diameter expansion direction and bulging from the communication hole only when the vent member is restored from the pressed state to the natural state.
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-74914
Disclosure of Invention
Problems to be solved by the utility model
The check valve formed of the above-described conventional film allows air to flow from the inside of the negative pressure container to the inside of the vent member only when the vent member returns from the squeezed state to the natural state. That is, when the air discharge member is not operated, since it is in a state of pressure contact with the periphery of the communication hole, the air flow between the negative pressure container and the air discharge member is prevented.
In the case of such a check valve, since the negative pressure state of the negative pressure container is maintained, it is difficult to adjust the suction speed and suction amount of the discharged liquid.
In addition, for example, when the negative pressure state of the negative pressure container is temporarily made equal to the atmospheric pressure by opening the lid (fixing member) or the like, and then the amount of the body fluid (discharged liquid) stored in the storage container (described as "storage container" in the same document) is increased, the inside of the container is pressed to a high pressure higher than the atmospheric pressure. This is because the air discharged from the receiving container is restricted by the check valve so that the air volume becomes small.
When the inside of the container is pressed in this manner, since the body fluid cannot be transferred into the container, it is necessary to discharge the air inside the container corresponding to the amount of the body fluid received. However, since the force with which the body fluid tries to infiltrate into the container is very weak, in the case of the check valve constituted by a membrane and crimped, the membrane does not extend in the direction of the diameter expansion, and the body fluid does not enter into the housing container. Therefore, it takes time and labor to remove one end of the connecting tube connecting the storage container and the negative pressure container and open the atmosphere, and it is difficult to efficiently suck the body fluid.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a medical suction instrument capable of easily adjusting a suction speed and a suction amount of a discharged liquid, and efficiently sucking the discharged liquid.
Means for solving the problems
The medical suction apparatus according to the present invention is a medical suction apparatus for sucking and discharging liquid by using negative pressure formed by a negative pressure container, and includes: the negative pressure container; a vent portion which is connected to the negative pressure container, has elasticity, is deformable between a first state and a second state in which the container is pressed from the first state, and is configured to be capable of releasing air to the outside to make the negative pressure container negative; a negative pressure container-side check valve disposed between the negative pressure container and the exhaust portion; and a discharge unit-side check valve that is disposed between the discharge unit and the outside, allows discharge of air from the discharge unit to the outside, and prevents intake of air from the outside to the discharge unit, wherein the negative pressure container-side check valve allows discharge of the air from the negative pressure container to the discharge unit when the discharge unit returns from the second state to the first state, and prevents intake of air from the discharge unit to the negative pressure container when the discharge unit changes from the first state to the second state, wherein the negative pressure container-side check valve increases the pressure of the negative pressure container by sucking the discharged liquid to the medical suction device, and allows discharge of the air from the negative pressure container to the discharge unit when the discharge unit is in the first state.
Effects of the utility model
The medical suction apparatus of the present invention can easily adjust the suction speed and the suction amount of the discharged liquid, and can effectively suck the discharged liquid.
Drawings
Fig. 1 is a perspective view showing a medical suction apparatus according to the present embodiment.
Fig. 2 is a perspective view showing the negative pressure container-side check valve.
Fig. 3 is a cross-sectional view of the air discharge member and the negative pressure container-side check valve showing the air flow when the air discharge member of the present embodiment is pressed.
Fig. 4 is a cross-sectional view of the air discharge member and the negative pressure container-side check valve showing the air flow when the pressed air discharge member is restored.
Fig. 5 is a cross-sectional view showing a negative pressure container-side check valve according to a modification, and shows a state where a communication hole is sealed.
Fig. 6 is a cross-sectional view showing a negative pressure container-side check valve according to a modification, and is a view showing a state in which a communication hole is opened.
Detailed Description
Hereinafter, embodiments of the medical suction apparatus according to the present invention will be described with reference to the drawings.
The embodiment described below is merely an example for facilitating understanding of the present invention, and does not limit the present invention. That is, the shape, size, arrangement, and the like of the members described below can be modified and improved without departing from the scope of the present invention, and the present invention naturally includes equivalents thereof.
In addition, in all the drawings, the same constituent elements are denoted by the same reference numerals, and overlapping description is appropriately omitted. In the following, as shown in fig. 1, the "vertical direction" refers to a vertical direction in a state where the medical suction device 1 is set upright.
(summary)
First, an outline of the medical suction apparatus 1 according to the present embodiment will be described with reference to fig. 1 to 4. Fig. 1 is a perspective view showing a medical suction apparatus 1 according to the present embodiment, and fig. 2 is a perspective view showing a negative pressure container-side check valve 8. Fig. 3 is a sectional view of the air discharge member 4 and the negative pressure container-side check valve 8 of the air flow when the air discharge member 4 of the present embodiment is pressed, and fig. 4 is a sectional view showing the air discharge member 4 and the negative pressure container-side check valve 8 of the air flow when the pressed air discharge member 4 is restored.
The medical suction device 1 of the present embodiment is a device that uses negative pressure formed by the negative pressure container 2 to suck and discharge liquid.
The medical suction device 1 includes: a negative pressure container 2; an exhaust unit (exhaust member 4) connected to the negative pressure container 2 and capable of discharging air to the outside to make the negative pressure container 2 negative; a negative pressure container-side check valve 8 disposed between the negative pressure container 2 and the gas discharge member 4; and an exhaust-side check valve 7 disposed between the exhaust member 4 and the outside.
The vent member 4 has elasticity and is configured to be deformable between a first state (natural state) and a second state (pressed state) pressed from the first state.
When the vent member 4 is returned from the second state to the first state, the negative pressure container-side check valve 8 allows air to be discharged from the negative pressure container 2 to the vent member 4. When the discharge member 4 changes from the first state to the second state, the negative pressure container-side check valve 8 prevents air from being sucked into the negative pressure container from the discharge member 4.
The negative pressure container-side check valve 8 raises the pressure of the negative pressure container 2 by sucking and discharging the liquid to the medical suction instrument 1, and allows air to be discharged from the negative pressure container 2 to the air discharge member 4 when the air discharge member 4 is in the first state.
According to the above configuration, when the pressure of the negative pressure container 2 is increased by the suction and drainage, the negative pressure container-side check valve 8 naturally discharges air to the outside through the air discharge member 4. Therefore, it is possible to prevent the pressure in the negative pressure container 2 from being excessively high without requiring special treatment of the medical suction device 1.
In addition, in a height range lower than the affected part, the relative position of the negative pressure container 2 can be adjusted to slowly discharge the discharged liquid to the outside of the body according to the siphon principle, and the discharged liquid can be stored in the storage container 3. When the housing container 3 is filled with the body fluid, the internal pressure of the housing container 3 and the negative pressure container 2 communicating with the housing container 3 is returned to near atmospheric pressure, and the suction of the body fluid can be naturally terminated, so that the treatment can be efficiently performed.
(Overall Structure)
First, the overall structure of the medical suction device 1 will be described with reference to fig. 1. The medical suction device 1 mainly includes: a negative pressure container 2 in a negative pressure state; a container 3 for containing body fluid and the like; a gas discharge member 4 for discharging air in the medical suction instrument 1 (negative pressure container 2) to the outside; and an air bag 5 for confirming the pressure state of the negative pressure container 2 and the like.
A cover 2a that allows air in the negative pressure container 2 to communicate with the outside and to pass through the air is attached to a lower portion of the negative pressure container 2. Further, the airbag 5 is disposed inside the negative pressure container 2 by the cover 2 a.
The negative pressure container 2 and the housing container 3 are connected to each other by a connecting pipe 6.
A suction port 3a and a discharge port 3c are provided in an upper portion of the housing container 3. A tube, not shown, is connected to the suction port 3a, and can accommodate body fluid and the like in the accommodating container 3. Further, the body fluid and the like contained in the container 3 can be directly discharged through the discharge port 3 c.
The fixing member 3b is attached to the suction port 3a, and the fixing member 3b blocks the flow path connected to the suction port 3a, thereby preventing body fluid from the human body from flowing into the housing container 3. Preferably, a check valve having the same structure as a check valve described later is provided in the connecting member having the suction port 3a to prevent the reverse flow of the discharged liquid from the housing container 3 into the body.
The negative pressure container 2 has a cylindrical connecting portion 2b protruding upward, and the exhaust member 4 is connected to the connecting portion 2 b. As described below in detail, the connection portion 2b is provided with a negative pressure container-side check valve 8.
The air discharge member 4 is a member for bringing the inside of the negative pressure container 2 into a negative pressure state, and includes: a pressing portion 4a having an elastic spherical shape; a cylindrical first opening 4b protruding downward from the pressing portion 4a and connected to an upper portion of the negative pressure container 2; and a cylindrical second opening 4c communicating with the outside. An exhaust-side check valve 7 is attached to the second opening 4c in the upper portion of the exhaust member 4.
The exhaust-portion-side check valve 7 allows exhaust from the exhaust member 4 to the outside by utilizing a change in differential pressure between the inside and the outside of the exhaust member 4 when the exhaust member 4 changes from the first state to the second state. Further, the exhaust-side check valve 7 prevents air from being sucked into the exhaust member 4 from the outside by a change in the differential pressure between the inside and the outside of the exhaust member 4 when the exhaust member 4 is returned from the second state to the first state.
The structure of the exhaust portion-side check valve 7 is the same as that disclosed in japanese patent laid-open publication No. 2013-74914. Specifically, a vertical flow path is formed in the exhaust-side check valve 7, and the exhaust-side check valve 7 includes a float-shaped valve body, not shown, positioned on the flow path and a valve seat, not shown, serving as a base of the valve body. The valve body abuts against the valve body by its own weight to close the flow path, and the internal pressure of the exhaust member 4 is applied from below to separate the valve body from the valve seat, thereby opening the flow path and allowing the exhaust from the inside to the outside of the exhaust member 4.
(with respect to negative pressure container side check valve)
Next, the negative pressure container-side check valve 8 will be described in detail mainly with reference to fig. 2 to 4.
The negative pressure container side check valve 8 of the present embodiment includes a first member (flexible wall 8a) and a second member (flexible wall 8b) that form and block the air flow path, and the flexible wall 8a and the flexible wall 8b constitute a duckbill valve. More specifically, a slit 8c is formed above the negative pressure container-side check valve 8. The flexible wall 8a and the flexible wall 8b are formed in a symmetrical shape with the slit 8c as the center and tapered upward.
As described above, by using the duckbill valve as the negative pressure container side check valve 8, the negative pressure container side check valve 8 can be opened naturally when the pressure of the negative pressure container 2 communicating with the storage container 3 via the connecting pipe 6 becomes high by sucking and storing the discharged liquid in the storage container 3.
The first member (flexible wall 8a) and the second member (flexible wall 8b) are disposed in a non-pressure-contact state in an air flow path between the negative pressure container 2 and the exhaust portion (exhaust member 4). Here, "disposed in a non-pressure-bonded state" means: before and after the valve, the valve is not pressed in a natural state without a pressure difference, and naturally, the valve is separated from each other and only in contact with each other in a state where no pressing force is applied. Particularly in the case of being separated from each other, it is a condition that flexibility is provided to such an extent that the backflow preventing function is not lost.
Since the negative pressure container-side check valve 8 is provided in a non-pressure contact state, the negative pressure container-side check valve 8 and the exhaust-side check valve 7 can release air from the outside when the pressures of the negative pressure container 2 and the exhaust member 4 are increased by sucking and discharging liquid.
In particular, the negative pressure container side check valve 8 of the present embodiment allows air to be discharged from the negative pressure container 2 to the air discharge member 4 when the pressure on the negative pressure container 2 side is positive, that is, when the pressure is increased to a predetermined value greater than or equal to 10mmHg on the air discharge portion (air discharge member 4) side by sucking and discharging the liquid by the medical suction instrument 1.
It is preferable that the pressure for opening the discharge-side check valve 7 and the pressure for opening the negative-pressure container-side check valve 8 be 14.7mmHg or less, preferably 10mmHg or less, because the valve body of the discharge-side check valve 7 can be pushed up to open the atmosphere.
Here, the pressure at which the negative pressure container-side check valve 8 opens and closes (the pressure in the negative pressure container 2 with respect to the internal pressure of the vent member 4) will be described with reference to table 1.
(Table 1)
| Pressure to open valve | Evaluation of |
| 0 | Δ |
| 5mmHg | ◎ |
| 10mmHg | ○ |
| 20mmHg | × |
As shown in table 1, even when the pressure at which the negative pressure container side check valve 8 is opened is 0, the function of making the inside of the negative pressure container 2 negative is not impaired. However, when the air discharge member 4 is pressed, a part of the air flows back into the negative pressure container 2, and the efficiency of bringing the inside of the negative pressure container 2 into a target negative pressure state is lowered.
In addition, in the case where the pressure for opening the negative pressure container side check valve 8 is 20mmHg, even if the discharged liquid is contained in the container, the negative pressure container side check valve 8 is difficult to open, resulting in a slow collection speed.
On the other hand, when the pressure for opening the negative pressure container side check valve 8 is 10mmHg or less, particularly 5mmHg, the height of the housing container 3 is reduced in a height range lower than the suction portion (affected part), and the pressure in the housing container 3 is increased by the siphon principle, the negative pressure container side check valve 8 can be opened.
Specifically, by disposing the accommodating container 3 at a low position where the height difference between the normal affected part height and the upper surface of the cradle of the subject is about 20cm, the pressure in the accommodating container 3 can be increased and the negative pressure container side check valve 8 can be opened. For example, in the case where the specific gravity of the discharged liquid is 1, when the housing container 3 is present at a lower position 20cm from the affected part height, a pressure of 14.7mmHg is applied to the inside of the housing container 3.
In order to allow a predetermined amount of discharged liquid to be naturally discharged when the container 3 contains the discharged liquid, it is preferable to set an index for the amount of operation (the number of operations) of the squeeze/vent member 4.
Specifically, the index includes a label having a notice about the number of operations (for example, 3 times) of the gas discharge member 4, and a line graph drawn on the negative pressure container 2 to show the inflation degree of the airbag 5 as a target.
(modification example)
In the above embodiment, the negative pressure container side check valve 8 using the duckbill valve has been described, but the present invention is not limited to the structure using the duckbill valve as long as the negative pressure container side check valve can be opened according to the amount of liquid discharged by suction.
Next, the negative pressure container-side check valve 18 according to a modification will be described mainly with reference to fig. 5 and 6. Fig. 5 is a sectional view showing the negative pressure container-side check valve 18 of a modification, showing a state of sealing the communication hole 19a, and fig. 6 is a sectional view showing the negative pressure container-side check valve 18 of a modification, showing a state of opening the communication hole 19 a.
The negative pressure container-side check valve 18 of the present modification includes a first member (body member 19) and a second member (membrane-like member 20) that form and block the air flow path.
The first member is a main body member 19 having a communication hole 19a for communicating the negative pressure container 2 and the gas discharge portion (gas discharge member 4).
Specifically, the main body member 19 is hollow and has a sharp shape, and the communication hole 19a is a lateral hole that extends in the horizontal direction with respect to the main body member 19 and communicates the hollow space inside the main body member 19 with the outside (the inside of the exhaust member 4).
The second member is a membrane-like member 20 attached to the main body member 19, and when the pressure of the negative pressure container 2 is increased by sucking the waste liquid into the medical instrument, the state of closing the communication hole 19a is changed to the state of opening the communication hole 19 a.
By using the membrane-like member 20 for the negative pressure container-side check valve 18, when the pressure of the negative pressure container 2 is increased by suction and drainage, the membrane-like member 20 can be opened by extending the membrane-like member 20 in the diameter expansion direction so as to open the communication hole 19 a.
In particular, the first member (body member 19) and the second member (membrane-like member 20) are arranged in a non-pressure-bonded state in the air flow path between the negative pressure container 2 and the exhaust portion (exhaust member 4).
By providing the negative pressure container side check valve 18 in a non-pressure contact state as described above, the negative pressure container side check valve 18 and the exhaust portion side check valve 7 can be opened to the atmosphere when the pressures of the negative pressure container 2 and the exhaust member 4 are increased by sucking and discharging liquid.
In the medical suction apparatus 1 according to the above-described embodiment, the medical suction apparatus 1 having the negative pressure container 2 and the accommodating container 3, respectively, has been described, but the present invention is not limited to the above-described configuration as long as the negative pressure container side check valve is provided. That is, the negative pressure container 2 may be formed integrally with the housing container 3 to constitute a negative pressure container.
The above embodiment includes the following technical ideas.
(1) A medical suction apparatus for sucking and discharging liquid by using a negative pressure formed by a negative pressure container,
the method comprises the following steps:
the negative pressure container;
a vent portion which is connected to the negative pressure container, has elasticity, is deformable between a first state and a second state in which the container is pressed from the first state, and is configured to be capable of releasing air to the outside to make the negative pressure container negative;
a negative pressure container-side check valve disposed between the negative pressure container and the exhaust portion; and
an exhaust unit-side check valve disposed between the exhaust unit and the outside, allowing exhaust from the exhaust unit to the outside, and preventing intake from the outside to the exhaust unit,
the negative pressure container-side check valve allows the air to be discharged from the negative pressure container to the discharge portion when the discharge portion returns from the second state to the first state, and prevents the air from being sucked from the discharge portion to the negative pressure container when the discharge portion changes from the first state to the second state,
the negative pressure container-side check valve increases the pressure of the negative pressure container by sucking the discharged liquid into the medical suction instrument, and allows the air to be discharged from the negative pressure container to the air discharge portion when the air discharge portion is in the first state.
(2) The medical suction instrument according to (1), wherein the negative pressure container side check valve allows the air to be discharged from the negative pressure container to the air discharge portion when the pressure on the negative pressure container side is a positive pressure, that is, when the pressure is increased to a value greater than the pressure on the air discharge portion side by 10mmHg or less by sucking the discharged liquid to the medical suction instrument.
(3) The medical suction apparatus according to (1) or (2), wherein the negative pressure container-side check valve includes a first member and a second member that form and block a flow path of the air,
the first member is a main body member having a communication hole communicating the negative pressure container and the air discharge portion,
the second member is a membrane-like member mounted to the body member,
when the pressure of the negative pressure container is increased by sucking the discharged liquid into the medical suction apparatus, the communication hole is opened from a state in which the communication hole is closed.
(4) The medical suction apparatus according to (1) or (2), wherein the negative pressure container-side check valve includes a first member and a second member that form and block a flow path of the air,
the first member and the second member constitute a duckbill valve.
(5) The medical suction apparatus according to (3) or (4), wherein the first member and the second member are disposed in a non-pressure-contact state in the air flow path between the negative pressure container and the exhaust unit.
Description of the reference numerals
1 medical suction instrument
2 negative pressure container
2a cover
2b connecting part
3 accommodating container
3a suction port
3b fixing member
3c discharge port
4 exhaust component (exhaust part)
4a extrusion part
4b first opening part
4c second opening part
5 air bag
6 connecting pipe
7 exhaust part side check valve
8 negative pressure container side check valve
8a Flexible wall (first Member)
8b Flexible wall (second Member)
8c slit
18 negative pressure container side check valve
19 Main body component (first component)
19a communicating hole
20 Membrane-like Member (second Member)
Claims (6)
1. A medical suction apparatus for sucking and discharging liquid by using negative pressure formed by a negative pressure container, comprising:
the negative pressure container;
a vent portion which is connected to the negative pressure container, has elasticity, is deformable between a first state and a second state in which the container is pressed from the first state, and is configured to be capable of releasing air to the outside to make the negative pressure container negative;
a negative pressure container-side check valve disposed between the negative pressure container and the exhaust portion; and
an exhaust unit-side check valve disposed between the exhaust unit and the outside, allowing exhaust from the exhaust unit to the outside, and preventing intake from the outside to the exhaust unit,
the negative pressure container-side check valve allows the air to be discharged from the negative pressure container to the discharge portion when the discharge portion returns from the second state to the first state, and prevents the air from being sucked from the discharge portion to the negative pressure container when the discharge portion changes from the first state to the second state,
the negative pressure container-side check valve increases the pressure of the negative pressure container by sucking the discharged liquid into the medical suction instrument, and allows the air to be discharged from the negative pressure container to the air discharge portion when the air discharge portion is in the first state.
2. The medical suction apparatus according to claim 1, wherein,
the negative pressure container side check valve allows the air to be discharged from the negative pressure container to the air discharge portion when the pressure on the negative pressure container side is increased to a positive pressure, that is, to a value greater than the pressure on the air discharge portion side by 10mmHg or less, by sucking the discharged liquid to the medical suction instrument.
3. The medical suction apparatus according to claim 1 or 2, wherein,
the negative pressure container-side check valve includes a first member and a second member that form and close a flow path of the air,
the first member is a main body member having a communication hole communicating the negative pressure container and the air discharge portion,
the second member is a membrane-like member mounted to the body member,
when the pressure of the negative pressure container is increased by sucking the discharged liquid into the medical suction apparatus, the communication hole is opened from a state in which the communication hole is closed.
4. The medical suction apparatus according to claim 1 or 2, wherein,
the negative pressure container-side check valve includes a first member and a second member that form and close a flow path of the air,
the first member and the second member constitute a duckbill valve.
5. The medical suction apparatus according to claim 3, wherein,
the first member and the second member are disposed in a non-pressure-contact state in the air flow path between the negative pressure container and the exhaust unit.
6. The medical suction apparatus according to claim 4, wherein,
the first member and the second member are disposed in a non-pressure-contact state in the air flow path between the negative pressure container and the exhaust unit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018191854A JP7215059B2 (en) | 2018-10-10 | 2018-10-10 | medical suction device |
| JP2018-191854 | 2018-10-10 | ||
| PCT/JP2019/039515 WO2020075680A1 (en) | 2018-10-10 | 2019-10-07 | Medical aspiration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215900484U true CN215900484U (en) | 2022-02-25 |
Family
ID=70164938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201990001032.XU Active CN215900484U (en) | 2018-10-10 | 2019-10-07 | Medical suction apparatus |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7215059B2 (en) |
| CN (1) | CN215900484U (en) |
| WO (1) | WO2020075680A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114748281B (en) * | 2022-02-23 | 2024-06-04 | 西安市儿童医院 | Body balance mechanism for neurosurgery brain detection process of child hospital |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61131751A (en) * | 1984-11-30 | 1986-06-19 | 住友ベークライト株式会社 | Medical suction liquid collector |
| JPH0221075Y2 (en) * | 1985-10-14 | 1990-06-07 | ||
| US4921488A (en) | 1988-01-15 | 1990-05-01 | Maitz Carlos A | Aspirator device for body fluids |
-
2018
- 2018-10-10 JP JP2018191854A patent/JP7215059B2/en active Active
-
2019
- 2019-10-07 CN CN201990001032.XU patent/CN215900484U/en active Active
- 2019-10-07 WO PCT/JP2019/039515 patent/WO2020075680A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020075680A1 (en) | 2020-04-16 |
| JP7215059B2 (en) | 2023-01-31 |
| JP2020058607A (en) | 2020-04-16 |
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