CN219398605U

CN219398605U - Ventilation line and ventilation therapy device

Info

Publication number: CN219398605U
Application number: CN202223410480.8U
Authority: CN
Inventors: 庄志
Original assignee: BMC Medical Co Ltd
Current assignee: BMC Medical Co Ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-07-25
Anticipated expiration: 2032-12-14

Abstract

The utility model relates to the field of ventilation treatment equipment, and discloses a ventilation pipeline and ventilation treatment equipment. The ventilation pipeline is used for ventilation treatment equipment and comprises a pipe body with a pipe cavity, one end of the pipe body is provided with an interface connector, the other end of the pipe body is provided with a host interface, the pipe wall of the pipe body is provided with a cavity and a communication port communicated with the cavity and the pipe cavity of the pipe body, and the communication port is covered with a water-permeable and air-impermeable layer. When the ventilation pipeline is applied to ventilation treatment equipment, inhaled gas generated by a host enters the lumen of the pipeline body through the host interface and then flows out to a patient interface through the interface. The inhaled gas can produce the comdenstion water on the internal wall surface of pipe wall in the pipe cavity of body flow in-process, and the comdenstion water can flow along the internal wall surface towards the interface under the effect of inlet air flow force, can get into in the cavity through the impermeable layer that permeates water when flowing to intercommunication mouth department, and can not flow out through the interface and get into in the patient interface and cause the damage to the patient.

Description

Ventilation line and ventilation therapy device

Technical Field

The utility model relates to the field of ventilation therapy equipment, in particular to a ventilation pipeline and ventilation therapy equipment comprising the ventilation pipeline.

Background

Ventilation therapy devices, such as ventilators, generally include a main unit, a ventilation circuit, and a patient interface, with an outlet port of the main unit communicating with an inlet port of the patient interface through the ventilation circuit. The main machine is usually provided with a humidifying device to increase the humidity of inhaled gas, and after the air flow is humidified by the humidifying device, the side effects (such as nasal obstruction, nasal bleeding and the like) caused by nasal cavity drying can be reduced, and the internal resistance of the nasal cavity can be reduced, so that the stability of the pressure in a patient interface is effectively ensured, and the treatment effect and the compliance of the breathing machine are improved.

When the existing breathing machine is used, heated and humidified gas generated by the main machine is communicated to the patient interface through the ventilation pipeline for inhalation by a patient. When gas flows through the ventilation line, condensed water is generated on the inner wall surface of the ventilation line, and the condensed water easily flows into the patient interface to damage the patient.

Disclosure of Invention

The utility model aims to solve the problem that condensate water generated by a ventilation pipeline in the prior art is easy to flow back to a patient to cause damage.

To achieve the above object, according to an aspect of the present utility model, there is provided a ventilation line for ventilation therapy equipment, including a tube body having a lumen, one end of the tube body is provided with an interface for connection with a patient interface, the other end of the tube body is provided with a host interface for connection with a host of the ventilation therapy equipment, a tube wall of the tube body has a cavity and a communication port communicating the cavity with the lumen of the tube body, and the communication port is covered with a water-permeable and air-impermeable layer.

Optionally, the communication port is disposed proximate to the interface port.

Optionally, the pipe body includes an inner wall and an outer wall located outside the inner wall, an annular gap is formed between the inner wall and the outer wall to form the cavity, and the communication port is disposed at one end of the inner wall near the interface.

Optionally, at an end near the interface port, the inner wall is shorter than the outer wall to form the communication port therebetween.

Optionally, the outer wall is provided with an annular protrusion protruding inwards near the interface, and the communication port is formed between the end face of the inner wall near the interface and the bottom face of the annular protrusion.

Optionally, the bottom surface of the annular projection is planar and/or the inner end of the annular projection extends flush with or beyond the inner wall.

Optionally, a section of the inner wall near the communication port is provided with a diameter gradually increasing toward the communication port to form a drainage slope.

Optionally, the inner wall is made of a gas permeable and water impermeable material.

Optionally, a water-absorbing layer is filled in the cavity; and/or a heating component is arranged on the outer wall.

Optionally, the ventilation pipeline further comprises a power interface, and the power interface is connected with the heating component.

In another aspect, the present utility model provides a ventilation therapy device, including a host, a patient interface, and a ventilation circuit as described above, where the interface is connected to an air inlet of the patient interface, and the host interface is connected to an air outlet of the host.

Through the technical scheme, when the ventilation pipeline is applied to ventilation treatment equipment, inhaled gas generated by a host enters the lumen of the pipeline body through the host interface and then flows out to a patient interface through the interface. The inhaled gas can produce the comdenstion water on the internal wall surface of pipe wall in the pipe cavity of body flow in-process, and the comdenstion water can flow along the internal wall surface towards the interface under the effect of inlet air flow force, can get into in the cavity through the impermeable layer that permeates water when flowing to intercommunication mouth department, and can not flow out through the interface and get into in the patient interface and cause the damage to the patient.

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

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a perspective view of one embodiment of a vent line of the present utility model;

FIG. 2 is an elevation view of the vent line of FIG. 1;

FIG. 3 is a top view of the vent line of FIG. 2;

FIG. 4 is a cross-sectional view of one embodiment of a vent line of the present utility model;

FIG. 5 is an enlarged view of a portion of FIG. 4;

fig. 6 is a cross-sectional view of another embodiment of the vent line of the present utility model.

Description of the reference numerals

10-tube body, 11-interface, 12-host interface, 13-cavity, 14-permeable and impermeable layer, 15-inner wall, 151-drainage slope, 16-outer wall, 161-annular protrusion, 17-water absorption layer, 18-power interface.

Detailed Description

The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used to generally refer to the orientation shown in the drawings. "inner and outer" means inner and outer relative to the contour of the respective parts themselves.

In one aspect, the utility model provides a ventilation line for a ventilation therapy device, the ventilation line comprising a tube body 10 having a lumen, one end of the tube body 10 being provided with an interface port 11 for interfacing with a patient, the other end of the tube body 10 being provided with a host port 12 for interfacing with a host of the ventilation therapy device, the tube wall of the tube body 10 having a cavity 13 and a communication port communicating the cavity with the lumen of the tube body 10, the communication port being covered with a water-permeable, air-impermeable layer 14.

In the foregoing, it will be understood that the channel of the tube body 10, through which the gas passes, is the lumen, and is used for communicating the interface 11 with the host interface 12. Liquid within the lumen (e.g., condensed water) may enter the cavity 13 through the water-impermeable layer 14, while gas within the lumen (e.g., inhaled gas) does not enter the cavity 13 through the water-impermeable layer 14.

It should be noted that ventilation therapy devices generally include a main unit for generating an inhalation gas, a patient interface (e.g., a respiratory mask, a nasal oxygen cannula, etc.) for wearing by a patient, and a ventilation circuit for venting the inhalation gas generated by the main unit to the patient interface. The interface 11 of the ventilation line is provided for interfacing with a patient, and the host interface 12 of the ventilation line is provided for interfacing with a host.

In use, the inhalation gas generated by the host enters the lumen of the tube body 10 via the host interface 12 and then flows out into the patient interface via the interface 11. The inhaled gas can generate condensed water on the inner wall surface of the tube wall in the process of flowing in the tube cavity of the tube body 10, the condensed water can flow towards the interface 11 along the inner wall surface under the action of the air inlet flow force, and the condensed water can enter the cavity 13 through the water-permeable and air-impermeable layer 14 when flowing to the communication port, and can not flow out into the patient interface through the interface 11 to cause damage to the patient.

In the present utility model, the communication port is preferably provided close to the interface port 11. The water-permeable, air-impermeable layer 14 may be formed of a hydrophilic film or may be formed of a water-absorbent sponge and a hydrophilic film fixedly laminated (i.e., a hydrophilic film is glued on a layer of the water-absorbent sponge). The hydrophilic film may be made of a gas-permeable and water-impermeable material such as polyethersulfone resin (PES) and carbon gel (CA).

In the present utility model, the cavity 13 may have any shape. According to a preferred embodiment of the utility model, the cavity 13 is annular. The annular cavity 13 can store more condensate. The cavity 13 may be formed by a hollow portion in the wall of the pipe body 10, or the pipe body 10 may be provided in a double-wall structure, and the cavity 13 may be formed by a gap between the double walls.

For example, in the embodiment shown in fig. 4-6, the tube body 10 may include an inner wall 15 and an outer wall 16 positioned outside the inner wall 15, with an annular gap between the inner wall 15 and the outer wall 16 to form the cavity 13, and the communication port is disposed at an end of the inner wall 15 near the interface port 11.

Wherein the communication port may be formed by opening on the inner wall 15, in this embodiment the communication port may have any shape, such as a circle, a square, an elongated shape, a ring shape. The communication port may also be implemented as shown in fig. 5, in which the inner wall 15 is shorter than the outer wall 16 at an end near the interface port 11 to form a communication port therebetween. It will be appreciated that in such an embodiment, the communication port is annular. The annular communication port can facilitate the condensed water formed on the inner wall surface of the pipe body 10 to completely enter the cavity 13.

In order to facilitate the arrangement of the water-permeable, air-impermeable layer 14 and to block all of the condensed water flowing into the cavity 13 through the water-permeable, air-impermeable layer 14, as shown in fig. 5, the outer wall 16 may be provided with an annular protrusion 161 protruding inward near the interface 11, and a communication port is formed between the end face of the inner wall 15 near the interface 11 (i.e., the top end face of the inner wall 15 as shown in fig. 5) and the bottom face of the annular protrusion 161. The water-permeable and air-impermeable layer 14 is also annular, and the axial direction of the water-permeable and air-impermeable layer 14 may be parallel to the axial direction of the inner wall 15 or may be angled.

Wherein, to facilitate the placement of the water-permeable, air-impermeable layer 14, the bottom surface of the annular projection 161 is preferably planar, and the inner end of the annular projection 161 extends flush with the inner wall 15 or beyond the inner wall 15. The upper and lower ends of the water-impermeable and air-impermeable layer 14 are adhered to the bottom surface of the annular projection 161 and the top end surface of the inner wall 15, respectively.

In the present utility model, as in the preferred embodiment shown in fig. 5, the diameter of a section of the inner wall 15 near the communication port is set to be gradually increased toward the communication port to form a drainage slope 151. In use, condensed water generated in the pipe body 10 will reach the water-permeable and air-impermeable layer 14 along the drainage slope 151.

In the present utility model, the outer wall 16 may be provided with a heating member. In this case, the vent line becomes a heating line. The heating means may directly heat and evaporate the condensed water stored in the cavity 13, thereby avoiding the risk of condensed water flowing to the patient interface. The inner wall 15 may be made of a gas-permeable and water-impermeable material, so that the vapor heated by the cavity 13 may be dispersed into the lumen of the tube body 10 through the inner wall 15 to become a part of the suction gas, thereby improving the humidification efficiency of the suction gas.

The heating element may be a heating wire, and the outer surface of the outer wall 16 may be provided with a hollow spiral structure extending along the axial direction of the outer wall 16, and the heating wire may be provided in the spiral structure and wound on the outer wall 16. The heating wire may also be attached to the inner surface of the outer wall 16. The heating element may also be a heating rod, a heating plate, or the like attached to the outer surface of the outer wall 16. The inner wall 15 may be formed of a hydrophobic membrane, which may be made of a breathable and watertight material such as Polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF), or the like.

In the present utility model, as shown in fig. 1-3, the vent line may further include a power interface 18, where the power interface 18 is connected to the heating element.

In the present utility model, as in the embodiment shown in fig. 6, the water-absorbing layer 17 may be filled in the cavity 13 to accelerate the absorption of condensed water. The water absorbing layer 17 may be a water absorbing sponge, and since the water absorbing sponge is located in the cavity 13 and is not disposed in the air path (i.e. the lumen of the tube body 10), particles generated by the water absorbing sponge cannot permeate into the air path and cannot be inhaled by a human body, and therefore, particle risks cannot be generated.

The ventilation pipeline is simple in structure, can avoid the risk of the patient caused by the condensed water flowing to the patient interface, and is high in humidifying efficiency.

In another aspect, the present utility model provides a ventilation therapy device, including a host, a patient interface, and a ventilation circuit as described above, where the interface 11 of the ventilation circuit is connected to an air inlet of the patient interface, and the host interface 12 of the ventilation circuit is connected to an air outlet of the host.

The main machine can comprise a humidifying device, and the inhaled gas heated and humidified by the humidifying device can enter the ventilation pipeline and be conveyed to the patient interface through the ventilation pipeline. When the humidified gas flows through the lumen of the tube body 10, condensed water is generated on the inner wall surface of the tube body 10, the condensed water flows towards the interface 11 along the inner wall surface under the action of the air inlet flow force, and enters the cavity 13 through the water-permeable and air-impermeable layer 14 when flowing to the communication port, and the condensed water entering the cavity 13 evaporates under the heating action of the heating component of the outer wall 16 and is dispersed into the lumen of the tube body 10 through the inner wall 15 to become a part of the sucked gas.

By using the ventilation pipeline, the ventilation treatment equipment can generate condensed water which can not enter a patient interface to cause damage to the patient, and can also improve the humidification efficiency of inhaled gas.

The ventilation therapy device of the present utility model may be a ventilator, an oxygen therapy apparatus, or the like.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model 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 utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims

1. The utility model provides a ventilation pipeline for ventilation therapeutic equipment, its characterized in that includes body (10) that have the lumen, the one end of body (10) is equipped with interface (11) that are used for being connected with patient interface, the other end of body (10) is equipped with host computer interface (12) that are used for being connected with the host computer of ventilation therapeutic equipment, the pipe wall of body (10) has cavity (13) and intercommunication the cavity with the intercommunication mouth of the lumen of body (10), the intercommunication mouth is covered with water-permeable impermeable layer (14).

2. The venting line according to claim 1, characterized in that the communication opening is arranged close to the interface (11), and/or

The pipe body (10) comprises an inner wall (15) and an outer wall (16) positioned outside the inner wall (15), an annular gap is formed between the inner wall (15) and the outer wall (16) to form the cavity (13), and the communication port is arranged at one end, close to the interface port (11), of the inner wall (15).

3. A vent line according to claim 2, wherein the inner wall (15) is shorter than the outer wall (16) at an end near the interface port (11) to form the communication port therebetween.

4. A vent line according to claim 3, wherein the outer wall (16) is provided with an inwardly protruding annular projection (161) adjacent the interface port (11), the communication port being formed between an end face of the inner wall (15) adjacent the interface port (11) and a bottom face of the annular projection (161).

5. The venting line according to claim 4, characterized in that the bottom surface of the annular projection (161) is planar and/or the inner end of the annular projection (161) extends flush with the inner wall (15) or beyond the inner wall (15).

6. A vent line according to claim 4, wherein a section of the inner wall (15) adjacent to the communication port is provided with a diameter gradually increasing towards the communication port to form a drainage slope (151).

7. A ventilation line according to claim 2, characterized in that the inner wall (15) is made of a gas-permeable and water-impermeable material.

8. -the venting line according to any one of claims 2 to 7, characterized in that the cavity (13) is filled with a water-absorbing layer (17); and/or the outer wall (16) is provided with heating means.

9. The vent line of claim 8, further comprising a power interface (18), the power interface (18) being connected to the heating component.

10. A ventilation therapy device comprising a host computer, a patient interface, and a ventilation circuit according to any one of claims 1-9, the interface (11) being connected to an air inlet of the patient interface, the host computer interface (12) being connected to an air outlet of the host computer.