CN216908850U

CN216908850U - Anti-reflux device and ventilation treatment equipment

Info

Publication number: CN216908850U
Application number: CN202123041113.0U
Authority: CN
Inventors: 刘丽君; 庄志
Original assignee: BMC Tianjin Medical Co Ltd
Current assignee: BMC Tianjin Medical Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-07-08
Anticipated expiration: 2031-12-02

Abstract

The utility model relates to the field of ventilation treatment equipment, and discloses an anti-reflux device and ventilation treatment equipment. The anti-backflow device is used for being installed at a fluid through hole and comprises a main body limiting a fluid channel, a fluid inlet and a fluid outlet communicated with the fluid channel are respectively arranged at two ends of the main body, one section, close to the fluid outlet, of the main body is a duckbill section, the duckbill section is arranged to be opened to open the fluid outlet when receiving forward fluid pressure in the fluid channel, and is closed to close the fluid outlet when losing the forward fluid pressure. By adopting the scheme, when the anti-backflow device is applied to the ventilation treatment equipment, even if the device is shaken, carried or even turned over, water in the humidification device cannot enter the main machine through the fluid through hole, meanwhile, the fluid through hole of the ventilation treatment equipment is isolated from the outside, suspended dust, particulate matters, mosquitoes and the like cannot enter the machine, and the device is safe and reliable.

Description

Anti-reflux device and ventilation treatment equipment

Technical Field

The utility model relates to the field of ventilation treatment equipment, in particular to an anti-reflux device and ventilation treatment equipment comprising the same.

Background

The existing ventilation treatment equipment, such as a breathing machine, is usually provided with a humidifying device at the rear end of a host machine, and airflow from the host machine is humidified by the humidifying device and then delivered to a patient end through a pipeline for use.

Because the air outlet of the main machine is always communicated with the air inlet of the humidifying device, when the machine is in a standby state and the machine shakes or water exists in the humidifying device in the carrying process, the water in the humidifying device possibly flows back into the main machine from the air inlet of the humidifying device, so that parts such as a fan, a circuit board and the like in the main machine lose efficacy or are damaged; water in the humidifying device can enter the pipeline from the air outlet of the humidifying device to accumulate in the pipeline, and the water can splash the respiratory tract and the nasal cavity of a patient when the patient is started to use, so that discomfort and potential safety hazards are caused.

In addition, the respirator on the market is relative to sealed air inlet (the air current can circulate) at present, and the gas outlet all is open, and except that suspended dust, particulate matter float from the opening easily and get into the respirator, some mosquitoes also can get into in the respirator from the opening, and this has huge potential safety hazard to the patient that is treated.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide an anti-reflux device and a ventilation therapy apparatus including the same to solve the above problems.

In order to achieve the above object, the present invention provides, in one aspect, an anti-backflow device for mounting at a fluid passage, the anti-backflow device comprising a body defining a fluid passage, the body having a fluid inlet and a fluid outlet at opposite ends thereof, respectively, the fluid inlet and the fluid outlet being in communication with the fluid passage, a section of the body adjacent to the fluid outlet being a duckbill section configured to open when subjected to a positive fluid pressure within the fluid passage to open the fluid outlet and to close when the positive fluid pressure is lost to close the fluid outlet.

Optionally, the duckbill section includes a curled portion at an outlet end, the curled portion being configured to expand when the duckbill section is open to open the fluid outlet and to contract when the duckbill section is closed to close the fluid outlet.

Optionally, the duckbill section is cylindrical with a uniform inner diameter after being opened.

Optionally, the main body comprises a fixing section connected to an inlet end of the duckbill section, the fixing section being for fixing the main body at the fluid passage.

Optionally, the strength of the fixed section is greater than that of the duckbill section, and/or a first fixing structure is arranged on the outer peripheral wall of the fixed section.

Optionally, the body comprises a sealing section connected to the inlet end of the fixed section.

Optionally, the sealing section is formed in an accordion shape.

In another aspect, the present invention provides a ventilation therapy device comprising a fluid port and an anti-reflux device as described above, the anti-reflux device being mounted at the fluid port.

Optionally, a second fixing structure for fixing the backflow prevention device is arranged at the fluid through hole.

Optionally, the second fixing structure includes an annular groove disposed around the fluid port and a limit portion partially stopping at the groove of the annular groove.

Optionally, the ventilation therapy device comprises a host part and a humidification part, the host part is provided with an air inlet and an air outlet, the humidification part is provided with an air inlet and an air outlet, the air outlet of the host part is communicated with the air inlet of the humidification part, and the backflow prevention device is arranged at least one of the air outlet of the host part, the air inlet of the humidification part and the air outlet of the humidification part.

By adopting the scheme, when the anti-backflow device is applied to the fluid through hole in the ventilation treatment equipment, when the ventilation treatment equipment is in the starting working state, the fluid outlet is in the open state, and the corresponding fluid through hole is smooth to allow air to pass through; when the therapeutic equipment of ventilating is standby state, the fluid export is in the closed condition, and corresponding fluid opening is closed, even rock, carry or even the upset, during water in the humidification device can not get into the host computer through the fluid opening, the fluid opening of the therapeutic equipment of ventilating simultaneously and external isolated, dust, particulate matter and the mosquito of suspension can not get into the machine yet, safe and reliable.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a perspective view of one embodiment of an anti-reflux device of the present invention;

FIG. 2 is a cross-sectional view of the anti-reflux apparatus of FIG. 1 with the duckbill section in a closed position;

FIG. 3 is a cross-sectional view of the anti-reflux device of FIG. 1 with the duckbill sections in an open state;

FIG. 4 is a perspective view of one embodiment of the ventilation therapy device of the present invention;

FIG. 5 is an exploded view of FIG. 4;

FIG. 6 is the cross-sectional view of FIG. 4 with the duckbill sections in a closed condition;

fig. 7 is a cross-sectional view of fig. 4 with the duckbill sections in an open condition;

FIG. 8 is a cross-sectional view of the main body portion of FIG. 7;

FIG. 9 is an inside perspective view of the side wall of the host housing of FIG. 8 having the air outlet of the host housing.

Description of the reference numerals

10-main body, 11-fluid channel, 111-fluid inlet, 112-fluid outlet, 12-duck mouth section, 121-curling part, 13-fixing section, 131-annular flange, 14-sealing section, 20-ventilation treatment equipment, 21-main body part, 211-main body shell, 2111-main body shell air outlet, 212-main body, 2121-main body air outlet, 22-humidifying part, 221-humidifying shell, 2211-humidifying shell air inlet, 2212-humidifying shell air outlet, 222-water tank, 2221-water tank air inlet, 2222-water tank air outlet, 223-heating seat, 23-annular groove and 24-limiting part.

Detailed Description

The following detailed description of embodiments of the utility model refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, the terms of orientation such as "inside and outside" used herein mean inside and outside with respect to the contour of each member itself, unless otherwise specified.

In one aspect, the present invention provides an anti-reflux device for installation at a fluid passageway, the anti-reflux device comprising a body 10 defining a fluid passageway 11, the body 10 having at each end a fluid inlet 111 and a fluid outlet 112 communicating with the fluid passageway 11, the body 10 having a duckbill section 12 adjacent the fluid outlet 112, the duckbill section 12 being configured to open when subjected to a positive fluid pressure within the fluid passageway 11 to open the fluid outlet 112 and to close when the positive fluid pressure is lost to close the fluid outlet 112.

In the above, it is understood that the fluid port refers to an opening through which a fluid (e.g., gas or liquid) passes. The main body 10 has a hollow structure with both ends open. The main body 10 may be linear or curved. The duckbill section 12 is a structure similar in shape to a duckbill and capable of being opened and closed like a duckbill. The positive fluid pressure refers to the pressure of the fluid entering the fluid channel 11 from the fluid inlet 111 and flowing towards the fluid outlet 112. That is, the duckbill section 12 will only open when fluid enters the fluid passageway 11 from the fluid inlet 111.

The backflow prevention device of the present invention is substantially equivalent to a check valve provided at a fluid passage, allows only one-way flow of fluid, and can be installed at any fluid passage where backflow of fluid is required to be prevented.

By adopting the scheme, when the anti-backflow device is applied to the fluid through hole in the ventilation treatment equipment, when the ventilation treatment equipment is in the starting working state, the fluid outlet 112 is in the open state, and the corresponding fluid through hole is smooth so as to allow air to pass through; when the therapeutic equipment of ventilating is standby state, fluid outlet 112 is in the closed condition, and corresponding fluid opening closes, even rock, carry or even upset, water in the humidification device can not get into the host computer through the fluid opening, and the fluid opening of the therapeutic equipment of ventilating simultaneously is isolated with external, and dust, particulate matter and the mosquito of suspension also can not get into the machine in, safe and reliable.

In the present invention, and preferably, referring to the embodiment shown in figures 1-3, the duckbill section 12 includes a curled portion 121 at the outlet end, the curled portion 121 being configured to expand when the duckbill section 12 is open to open the fluid outlet 112 (see figure 3) and contract when the duckbill section 12 is closed to close the fluid outlet 112 (see figure 2).

The curling part 121 can be in a curling state in a normal state after being produced and shaped by a die, so that the space is saved and the elastic resilience is good. When the duckbill section 12 is subjected to the positive fluid pressure therein, the curled portion 121 expands into a passage. And when the normal curled portion 121 is subjected to a reverse fluid impact, the curled portion 121 maintains a sealed and isolated state. The curled portion 121 is preferably curled in multiple layers, which may make the curled portion 121 more airtight.

In order to keep the flow area of the fluid constant, it is preferable that the duckbill section 12 is opened to have a cylindrical shape with a uniform inner diameter as shown in fig. 3.

In the present invention, the main body 10 may further include a fixing section 13, the fixing section 13 is connected to an inlet end of the duckbill section 12, and the fixing section 13 is used for fixing the main body 10 at the fluid passage.

Wherein, in order to improve the reliability of the fixing of the main body 10, the strength of the fixing section 13 is preferably greater than that of the duckbill section 12. For example, the fixing section 13 may be made of a hard material, such as a plastic material; the duckbill section 12 may be made of a soft material, such as rubber, silicone, or the like. Of course, the fixed section 13 and the duckbill section 12 may be made of the same soft material, but the wall thickness of the fixed section 13 is greater than that of the duckbill section 12 to achieve high strength.

In addition, the fixed segment 13 may be directly fixed to the fluid passage by a connection method such as bonding, or a structure for realizing fixation may be provided on the fixed segment 13, for example, a first fixing structure may be provided on an outer circumferential wall of the fixed segment 13. The fixing section 13 may be directly fixed at the fluid port by a first fixing structure, for example, the first fixing structure includes a buckle capable of being clamped at the edge of the fluid port; the securing section 13 may also be secured by a first securing formation cooperating with a second securing formation (e.g. as described below) provided at the fluid passage. The fixed segment 13 is preferably removably fixed to the fluid passage to allow maintenance and replacement of the main body 10.

In the present invention, as shown in fig. 1 to 3, the main body 10 may further include a sealing section 14, and the sealing section 14 is connected to the inlet end of the fixing section 13.

Wherein the sealing section 14 may be formed in an accordion shape, for example, as shown in fig. 2 or 3, the wall of the sealing section 14 has a V-shape in cross section along the axial direction. The sealing section 14 is adapted to be compressed by force to perform a sealing function within a defined distance interval (described in detail below).

In the present invention, the main body 10 may be an integrally formed member made of a soft rubber material.

The backflow prevention device is simple in structure, low in failure rate, safe, reliable, low in cost and long in service life; the replacement is simple and convenient, and the aging and health problems can be avoided; the backflow cannot occur under any condition to cause the failure of the ventilation treatment equipment, and the ventilation treatment equipment can continuously provide service for patients.

In another aspect, the present invention provides a ventilation therapy device 20, wherein the ventilation therapy device 20 comprises a fluid port and the anti-backflow device, and the anti-backflow device is installed at the fluid port.

Wherein, the fluid through hole can be provided with a second fixing structure for fixing the backflow prevention device. The second fixing structure may be a structure matched with the first fixing structure mentioned above, for example, the first fixing structure includes an annular flange 131 disposed on the outer circumferential wall of the fixing section 13 (the annular flange 131 may be a soft plastic member having certain hardness and being deformable or a rubber-coated member having a skeleton therein, the skeleton may be a hard material such as plastic or metal, which is deformable and easy to mount and has a certain supporting function), and the second fixing structure includes an annular groove 23 disposed around the fluid through opening and a stopper portion 24 partially stopping at the notch of the annular groove 23. The second fixing structure may also be a separate fixing structure, that is, the fixing section 13 is fixed directly by the second fixing structure disposed at the fluid passage without the first fixing structure disposed on the fixing section 13.

In the present invention, the ventilation therapy device 20 may include a main body part 21 and a humidification part 22, the main body part 21 having an air inlet and an air outlet, the humidification part 22 having an air inlet and an air outlet, the air outlet of the main body part 21 being communicated with the air inlet of the humidification part 22, and the backflow prevention means being provided at least one of the air outlet of the main body part 21, the air inlet of the humidification part 22, and the air outlet of the humidification part 22. It will be appreciated that the outlet of the main body portion 21, the inlet of the humidifying portion 22, the outlet of the humidifying portion 22, etc. are the aforementioned fluid ports.

Specifically, referring to the embodiments shown in fig. 4-9, the host portion 21 can include a host housing 211 and a host 212 disposed within the host housing 211, the host housing 211 having a host housing air inlet (not shown) and a host housing air outlet 2111, the host 212 having a host air inlet (not shown) and a host air outlet 2121. The humidification portion 22 may include a humidification housing 221, a water tank 222 disposed in the humidification housing 221, and a heating seat 223 disposed below the humidification housing 221 for heating, wherein the humidification housing 221 has a humidification housing air inlet 2211 and a humidification housing air outlet 2212, and the water tank 222 has a water tank air inlet 2221 and a water tank air outlet 2222. The host air outlet 2121, the host housing air outlet 2111, the humidification housing air inlet 2211 and the water tank air inlet 2221 are sequentially and correspondingly communicated, and the water tank air outlet 2222 is correspondingly communicated with the humidification housing air outlet 2212. The anti-backflow device is respectively arranged at the air outlet 2111 of the host machine shell and the air outlet 2212 of the humidifying shell.

As shown in fig. 8 and 9, an annular groove 23 is provided on an inner side surface of the side wall of the main body housing 211 where the main body housing air outlet 2111 is provided, and three stopper portions 24 extending toward the annular groove 23 in the radial direction of the annular groove 23 are provided on the outer periphery of the annular groove 23. As shown in fig. 6, the annular flange 131 of the backflow prevention device is installed in the annular groove 23 and is limited in the annular groove 23 by the limiting part 24, so that the backflow prevention device is fixed and cannot fall off or displace; the sealing section 14 of the backflow prevention device is abutted between the host air outlet 2121 and the edge of the host housing air outlet 2111, so that the host air outlet 2121 is in sealed communication with the host housing air outlet 2111.

As shown in fig. 6, by arranging the backflow prevention device on the connection channel between the main body part 21 and the humidifying part 22, when in standby, the duckbill section 12 of the backflow prevention device is closed and curled, the main body part 21 and the humidifying part 22 are completely isolated into two independent sections, and even if the main body part 21 is shaken, conveyed or even turned over, water of the humidifying part 22 cannot enter the main body part 21. As shown in fig. 7, when the main body part 21 enters the working state, the air flow with a certain air pressure from the main body part 21 blows the duckbill section 12 open to become a channel, the air flow enters the water tank 222 in the humidifying part 22 from the main body part 21, the water in the water tank 222 is heated by the heating seat 223, and the warm and humid air flow is conveyed to the patient end by the pipeline for use.

As shown in fig. 6, by providing the backflow preventing device at the air outlet of the apparatus, that is, the air outlet of the humidifying part 22 in this embodiment, it is possible to prevent suspended dust, particles, mosquitoes and the like from entering the apparatus from the air outlet and affecting the use of the patient.

In the embodiment shown in the figure, the host portion 21 and the humidification portion 22 are distributed left and right. It should be noted that, in other embodiments, the main body portion 21 and the humidification portion 22 may be distributed up and down or front and back, and the air flow may be from the main body portion 21 to the humidification portion 22 and then to the patient side, or from the main body portion 21 to the humidification portion 22 and then back to the main body portion 21 and then to the patient side.

In the utility model, the ventilation treatment equipment can be a breathing machine, an oxygen therapy instrument and the like.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the utility model. The utility model is not described in detail in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. An anti-reflux device for installation at a fluid passage, characterized in that it comprises a body (10) defining a fluid passage (11), the ends of the body (10) being a fluid inlet (111) and a fluid outlet (112) communicating with the fluid passage (11), respectively, the section of the body (10) near the fluid outlet (112) being a duckbill section (12), the duckbill section (12) being arranged to open the fluid outlet (112) when subjected to a forward fluid pressure within the fluid passage (11) and to close the fluid outlet (112) when the forward fluid pressure is lost.

2. The anti-reflux device as claimed in claim 1, wherein said duckbill section (12) comprises a curled portion (121) at an outlet end, said curled portion (121) being configured to expand when said duckbill section (12) is open to open said fluid outlet (112) and contract when said duckbill section (12) is closed to close said fluid outlet (112).

3. The anti-reflux device as set forth in claim 2, wherein said duckbill section (12) is cylindrical with a uniform inside diameter after opening.

4. The anti-reflux device according to claim 1, wherein said main body (10) comprises a fixing section (13), said fixing section (13) being connected to an inlet end of said duckbill section (12), said fixing section (13) being adapted to fix said main body (10) at said fluid passage.

5. The backflow prevention device according to claim 4, wherein the strength of the fixing section (13) is greater than the strength of the duckbill section (12), and/or a first fixing structure is provided on the outer peripheral wall of the fixing section (13).

6. The backflow prevention device according to claim 4, wherein the main body (10) comprises a sealing section (14), the sealing section (14) being connected to an inlet end of the fixed section (13).

7. The backflow prevention device according to claim 6, wherein the sealing section (14) is formed in a corrugated shape.

8. An airway treatment device (20) comprising a fluid port and an anti-reflux means as claimed in any one of claims 1 to 7, the anti-reflux means being mounted at the fluid port.

9. The ventilation treatment apparatus of claim 8, wherein a second securing structure is provided at the fluid passage for securing the anti-reflux device; and/or

The ventilation treatment device (20) comprises a host machine part (21) and a humidifying part (22), wherein the host machine part (21) is provided with an air inlet and an air outlet, the humidifying part (22) is provided with an air inlet and an air outlet, the air outlet of the host machine part (21) is communicated with the air inlet of the humidifying part (22), and the backflow preventing device is arranged at least one of the air outlet of the host machine part (21), the air inlet of the humidifying part (22) and the air outlet of the humidifying part (22).

10. The ventilation therapy device according to claim 9, wherein the second fixation structure comprises an annular groove (23) provided around the fluid through port and a stop portion (24) partially stopping at the groove opening of the annular groove (23).