CN112426599A

CN112426599A - Nasal plug for nasal oxygen catheter, nasal oxygen catheter and ventilation treatment equipment

Info

Publication number: CN112426599A
Application number: CN202011190882.4A
Authority: CN
Inventors: 陈允敬; 刘久重; 郑芳; 庄志
Original assignee: BMC Medical Co Ltd
Current assignee: BMC Medical Co Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-03-02

Abstract

The invention relates to the field of ventilation treatment, and discloses a nasal plug for a nasal oxygen catheter, the nasal oxygen catheter and ventilation treatment equipment. The nose plug is provided with the stopping structure which surrounds the air outlet and extends out of the cavity from the inner wall of the shell, so that the function of blocking condensed water on the inner wall of the cavity from entering the air outlet is achieved, and the problem of water choking caused by the fact that the condensed water enters the respiratory tract of a patient from the air outlet is solved.

Description

Nasal plug for nasal oxygen catheter, nasal oxygen catheter and ventilation treatment equipment

Technical Field

The invention relates to the field of ventilation treatment, in particular to a nasal plug for a nasal oxygen catheter, the nasal oxygen catheter containing the nasal plug and ventilation treatment equipment containing the nasal oxygen catheter.

Background

Nasal oxygen catheters are components used in ventilation therapy devices (e.g., ventilators) for the passage of pressurized air or breathable gas into the nasal cavity of a user. The nasal oxygen catheter is generally used for nasal plugs inserted into nasal cavities, and referring to fig. 1, a partial structural schematic view of the nasal oxygen catheter according to the prior art is shown, wherein the structure of the nasal plug is highlighted, the nasal plug generally comprises a body 1 ', the body 1' comprises a shell 11 ', a cavity 12' is formed in the shell 11 'for air flow to pass through, an air outlet 2' is opened on the shell 11 ', and an air outlet pipe 4' extending from the edge of the air outlet 2 'to the outside of the shell 11' can be further provided, wherein for the prior nasal plug, the transition from the inner wall of the shell 11 'to the inner wall of the air outlet pipe 4' is a direct smooth transition inside the cavity 12 ', so that the problem is that the condensed water in the nasal plug risks entering the respiratory tract of a patient through the air outlet 2' to.

As can be better understood by referring to fig. 2, in the use process of the ventilation therapy equipment such as a ventilator and a high-flow oxygen therapy equipment according to the prior art, a trace amount of condensed water exists in the heating pipeline and the nasal oxygen catheter, the condensed water (represented by a circle as a condensed water droplet) flows into the nasal obstruction part of the nasal oxygen catheter from the heating pipeline and the nasal oxygen catheter along the airflow direction (the airflow direction is indicated by an arrow in fig. 2), and then is adsorbed on the inner surface of the nasal obstruction cavity 12 ', the air outlet pipe 4 ' of the nasal obstruction is generally connected with the main body 1 ' in a smooth transition manner, and the condensed water easily enters the air outlet pipe 4 ' along the inner surface of the main body 1 ' through the smooth transition part, and then enters the respiratory tract of a patient to cause water choking, so as to cause discomfort of the.

Disclosure of Invention

The invention aims to provide a nasal plug for a nasal oxygen catheter, the nasal oxygen catheter containing the nasal plug and ventilation treatment equipment containing the nasal oxygen catheter, so as to solve the problem that condensed water in a nasal plug body in the existing nasal oxygen catheter is discharged out of the nasal plug body through an air outlet and enters the respiratory tract of a patient.

In order to achieve the above object, in one aspect, the present invention provides a nasal plug for a nasal oxygen catheter, the nasal plug includes a body, the body includes a housing and a cavity inside the housing, the body is provided with at least one air outlet, and the nasal plug further includes a stop structure extending from an inner wall of the housing toward the cavity around the at least one air outlet.

Preferably, a reinforcing structure is formed on the stopper structure.

Preferably, the reinforcing structure comprises reinforcing ribs; and/or the reinforcing structure comprises a flanging which is folded and extends towards the outside of the air outlet.

Preferably, the stop structure includes a first end connected to the housing and a second end extending into the cavity, the second end having an inner diameter greater than an inner diameter of the air outlet.

Preferably, the second end has an inner diameter greater than the inner diameter of the first end.

Preferably, the stop structure is a collar.

Preferably, the nasal prong includes at least two of the air outlets, and the stop structure surrounds all of the air outlets on the prong.

Preferably, one end of the cavity is formed as an air inlet end, the other end is formed as a closed end, and a connecting structure for connecting with a vent pipeline is formed on one side of the shell corresponding to the air inlet end.

In a second aspect of the invention, a nasal oxygen catheter is provided, comprising a ventilation circuit and the nasal prongs.

In a third aspect of the invention, there is provided a ventilation therapy device comprising said nasal oxygen catheter.

In the nasal plug for the nasal oxygen catheter, the stop structure is arranged and surrounds the air outlet and extends out of the inner wall of the shell towards the cavity, so that the effect is brought that if the condensed water on the inner wall of the cavity is discharged through the air outlet, the condensed water needs to firstly cross the stop structure, therefore, the stop structure plays a role in blocking the condensed water on the inner wall of the cavity from entering the air outlet, the condensed water on the inner wall of the shell cannot easily enter the air outlet and then enter the respiratory tract of a patient, and the problem of water choking caused by the fact that the condensed water enters the respiratory tract of the patient from the air outlet is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. It should be noted that in the following drawings, arrows represent the flow direction of the air flow, and circles represent the condensed water. In the drawings:

FIG. 1 is a partial structural cross-sectional view of a nasal oxygen catheter according to the prior art, showing primarily the nasal prongs;

FIG. 2 is a view of the gas flow direction and the condensate distribution in the structure of FIG. 1;

FIG. 3 is a partial structural cross-sectional view of a nasal oxygen catheter according to a first embodiment of the present invention, with the nasal prong portion primarily shown;

FIG. 4 is a view of the airflow direction and the condensate distribution in the structure shown in FIG. 3;

FIG. 5 is a partial structural cross-sectional view of a nasal oxygen catheter according to a second embodiment of the present invention, with the nasal prong portion primarily shown;

FIG. 6 is a schematic view of the stop structure of FIG. 5, viewed from below and looking up in FIG. 5;

FIG. 7 is a view showing the flow direction of air and the distribution of condensed water in the structure shown in FIG. 5;

FIG. 8 is a partial structural cross-sectional view of a nasal oxygen catheter in accordance with a third embodiment of the present invention, showing primarily the nasal prong portion;

FIG. 9 is a view showing the flow direction of air and the distribution of condensed water in the structure shown in FIG. 8;

FIG. 10 is a partial structural cross-sectional view of a nasal oxygen catheter according to a fourth embodiment of the present invention, showing primarily the nasal prong portion;

FIG. 11 is a view showing the flow direction of air and the distribution of condensed water in the structure shown in FIG. 10;

FIG. 12 is a partial, cross-sectional structural view of a nasal oxygen catheter, showing primarily the nasal prongs, according to a fifth embodiment of the present invention;

FIG. 13 is a view showing the flow direction of air and the distribution of condensed water in the structure shown in FIG. 12;

FIG. 14 is a partial structural cross-sectional view of a nasal oxygen catheter in accordance with a sixth embodiment of the invention, showing primarily the nasal prong portion;

FIG. 15 is a schematic view of the stop structure of FIG. 14, as viewed from below and looking up in FIG. 14;

FIG. 16 is a view showing the flow direction of air and the distribution of condensed water in the structure shown in FIG. 14;

FIG. 17 is a partial, cross-sectional, structural view of a nasal oxygen catheter, according to a seventh embodiment of the present invention, showing primarily the nasal prong;

FIG. 18 is a schematic view of the stop structure of FIG. 17, as viewed from the bottom-up direction of FIG. 17;

fig. 19 is a view showing a flow direction of air and a distribution of condensed water in the structure shown in fig. 18.

Description of the reference numerals

The prior art is as follows: 1' -a body; 11' -a housing; 12' -a cavity; 2' -the gas outlet; 4' -an air outlet pipe;

the application: 1-body; 11-a housing; 12-a cavity; 2-air outlet; 3-a stop structure; 31-reinforcing ribs; 32-flanging; and 4, an air outlet pipe.

Detailed Description

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

In the present invention, it is to be understood that the terms "away", "toward", and the like indicate an orientation or positional relationship corresponding to an orientation or positional relationship in actual use; "inner and outer" refer to the inner and outer relative to the profile of the components themselves. These are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate that the device or component in question must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The invention provides a nasal plug for a nasal oxygen catheter, which comprises a body 1, wherein the body 1 comprises a shell 11 and a cavity 12 positioned in the shell 11, at least one air outlet 2 is formed in the body 1, and the nasal plug further comprises a stopping structure 3 which surrounds the at least one air outlet 2 and extends from the inner wall of the shell 11 towards the inside of the cavity 12.

In the nasal plug for a nasal oxygen catheter according to the invention, a stop 3 is provided, which stop 3 surrounds the air outlet 2 and extends from the inner wall of the housing 11 towards the inside of the cavity 12, whereby the effect is: if the condensed water on the inner wall of the cavity 12 is discharged through the air outlet 2, the condensed water needs to cross the stopping structure 3 first, so that the stopping structure 3 plays a role in blocking the condensed water on the inner wall of the cavity 12 from entering the air outlet 2, the condensed water on the inner wall of the shell 11 cannot easily enter the air outlet 2 and then enter the respiratory tract of a patient, and the problem of water choking caused by the condensed water entering the respiratory tract of the patient from the air outlet 2 is solved.

Referring to fig. 4, 6, 7, 9, 11, 13, 15, 18, etc., it is easier to understand the effect of the stop structure 13 in the present invention, during the operation of the ventilation treatment device such as a ventilator or a high flow oxygen therapy apparatus, after a trace amount of condensed water in the heating pipeline, the nasal oxygen catheter, etc. enters into the cavity 12 of the nasal obstruction main body 1, the condensed water mainly gathers on the lower side of the inner surface of the cavity 12 (under the action of gravity) along with the blowing direction of the air flow, and after the stop structure 3 is provided, the condensed water also mainly gathers on the outer peripheral wall of the stop structure 3 extending towards the inside of the cavity 12 (under the action of the air flow). When the condensate water gathering is more on backstop structure 3's the periphery wall, the condensate water prolongs 3 periphery wall flows down and drips on the downside inner wall of cavity 12 of backstop structure, therefore the condensate water hardly enters into gas outlet 2 to solve the problem that the condensate water enters into patient's respiratory track via gas outlet 2.

Here, it will be appreciated that the nasal prong may also be provided with an outlet tube 4 extending from the edge of the outlet 2 towards the exterior of the prong. The shape of the outlet 2 of the nasal plug is illustrated as a circle, and the cross section of the corresponding outlet tube 4 perpendicular to the axial direction is also a circle, but it is understood that the shape of the outlet 2 is not limited to a circle, and can also be an ellipse, a rectangle or other irregular shape, and the cross section of the corresponding outlet tube 4 perpendicular to the axial direction can also be changed. In addition, in the embodiment, referring to fig. 3 to 19, the stop structure 3 may be a retainer ring, which may be a retainer ring disposed around one or more gas outlets 2, and the shape surrounded by the retainer ring is not limited to a circle, and may also be an ellipse, a rectangle, or another irregular shape.

Referring to fig. 3 and 4, in the first embodiment of the present invention, the nasal prong includes two air outlets 2, one end of the stop structure 3 connected to the housing 11 is connected to the edge of the air outlet 2, that is, the stop structure 3 extends from the edge of each air outlet 2 toward the cavity 12, the two air outlets 2 are distributed with the respective stop structures 3, the thickness of the stop structure 3 is the same as that of the air outlet tube 4, and the stop structure 3 may be integrated with the air outlet tube 4, so that, referring to fig. 4, due to the presence of the stop structure 3, the edge of the air outlet 2 is not directly connected or contacted with the wall of the housing 11, thereby effectively blocking condensed water on the inner wall of the housing 11 from entering the air outlet 2. In this embodiment, there may be a problem that if the material hardness of the stopper structure 3 is low and the wall thickness of the stopper structure 3 is thin, the problem of blocking the air outlet 2 by deforming the stopper structure 3 may occur in the case of a large air flow and a large internal and external pressure, and therefore, it is preferable that this problem can be improved by increasing the material hardness of the stopper structure 3, thickening the wall thickness of the stopper structure 3, adding a reinforcing structure to the stopper structure 3, changing the position or shape of the stopper structure 3, and the like, which will be described below in conjunction with other embodiments.

Thereby, preferably, the stop 3 may have a thicker wall thickness, e.g. see fig. 10 and 11, compared to fig. 3 and 4, the wall thickness of the stop 3 may be larger than the wall thickness of the outlet tube 4, and more particularly, the inner diameter of the stop 3 may be equal to the inner diameter of the outlet tube 4, the stop 3 may be integrally formed with the outlet tube 4. The strength of the stop structure 3 can be improved by thickening the wall thickness of the stop structure 3, so that the problem that the stop structure 3 is deformed to block the air outlet 2 under the conditions of air flow and large internal and external pressure is solved.

For another example, as another preferred embodiment, a reinforcing structure for improving the strength of the stopper structure 3 may be formed on the stopper structure 3, and the specific form of the reinforcing structure may be variously selected. For example, the reinforcing structure may include a rib 31, and referring to fig. 5 to 7, an arrangement form of the rib 31 is shown, in the present embodiment, the stop structure 3 extends along the axial direction of the air outlet 2, the rib 31 is formed on the outer circumferential wall of the stop structure 3, extends along the axial direction of the air outlet 2, and a plurality of ribs 31 are formed at intervals along the outer circumferential surface of the stop structure 3, such that a groove is formed between the rib 31 and the rib 31, and the condensed water can be collected at the groove, thereby further playing a role of guiding and dripping the condensed water downward on the outer circumferential surface of the stop structure 3. Of course, it is to be understood that the ribs 31 may be provided in any other suitable configuration. For another example, the reinforcing structure may also be in the form of a flange, and referring to fig. 8 and fig. 9, a flange 32 is formed at an end of the stopper structure 3 facing the cavity 12, and the flange 32 is folded and extended outward of the air outlet 2, in this embodiment, the flange 32 is folded and extended outward of the stopper structure 3, specifically, the stopper structure 3 extends in the axial direction of the air outlet 2, and the flange 32 extends perpendicular to the axial direction of the stopper structure 3, such flange 32 may also better prevent the condensed water on the outer peripheral surface of the stopper structure 3 from flowing into the air outlet 2. Of course, the flange 32 may be provided in any other suitable form, for example, the extending direction of the flange 32 may also have a non-right angle with the axial direction of the stop structure 3.

Alternatively, it is preferred that the stop structure 3 comprises a first end connected to the housing 11 and a second end extending into the cavity 12, the second end having an outer diameter larger than the outer diameter of the first end; further preferably, the second end has an inner diameter greater than the inner diameter of the first end. For example, the stop structure 3 may be formed as an expanding section at least on a side adjacent to the first end, the outer diameter of the expanding section gradually increasing in a direction from the first end to the second end. In the embodiment of the drawings, the stop structure 3 has an outer diameter that gradually increases from the first end to the second end of the stop structure 3, and may be formed in a horn shape as shown in fig. 12 and 13, for example, that is, the entire stop structure 3 is formed in a horn shape. In this case, the stopper structure 3 does not extend linearly, but has a horn shape gradually enlarged from one end to the other end, so that not only the strength of the stopper structure 3 can be increased to improve the problem that the stopper structure 3 is deformed to block the air outlet 2 in the case of a large air flow and a large internal and external pressure, but also the horn-shaped stopper structure 3 can guide the air flow better. It is to be understood that the first end may be formed with an expanding section, and the expanding section may be in a horn shape, a tapered shape, or another shape in which the outer diameter is gradually enlarged.

In addition, in the above illustrated embodiment, the end of the stop structure 3 connected to the housing 11 is connected to the edge of the air outlet 2, in other words, the stop structure 3 extends from the edge of the air outlet 2 towards the cavity 12 inside the housing 11, and in the above illustrated embodiment, the nasal prongs are each provided with two air outlets 2, each of the two air outlets 2 having a stop structure 3 disposed around its edge.

Alternatively, however, the stop structure 3 comprises a first end connected to the housing 11 and a second end extending into the cavity 12, the second end having an inner diameter greater than the inner diameter of the air outlet 2; for example, at least a portion of the end of the stop structure 3 connected to the housing 11 is spaced from the edge of the air outlet 2, see fig. 14, 15 and 16, for example, in the present embodiment, the end of the stop structure 3 connected to the housing 11 is spaced from the edge of the air outlet 2, that is, perpendicular to the axial direction of the air outlet 2, the inner diameter of the second end of the stop structure 3 is larger than the inner diameter of the air outlet 2, and the cross section of the second end of the stop structure 3 is larger than the cross section of the air outlet 2, so that the air flow from the stop structure 3 to the air outlet 2 is smoother. Because the cross section of the second end of the stop structure 3 is larger than that of the outlet 2, preferably, the inner diameter of the first end of the stop structure 3 is also larger than that of the outlet 2, that is, the cross sections of the stop structures 3 are larger than that of the outlet 2, the airflow gradually enters from the stop structure 13 with a relatively smaller section space where the nasal obstruction airflow channel with the largest space enters to the outlet 2 with a smaller section space, and the stop structure 13 serves as a transition area of the airflow and can play a certain airflow guiding role. The interval between the end of the stop structure 3 connected to the housing 11 and the edge of the air outlet 2 is preferably slightly smaller than the length of the stop structure 3 extending toward the inside of the cavity 2, and the stop structure 3 can be effectively prevented from blocking the air outlet 2 by setting the interval.

For another example, referring to fig. 17, 18 and 19, the nasal plug further includes a stop structure 3 extending from the inner wall of the housing 11 toward the cavity 12 around all or at least more than one of the air outlets 2, in the figure, the nasal plug includes two air outlets 2, only one stop structure 3 is provided, and the stop structure 3 surrounds the two air outlets 2, so that the condensed water on the inner wall of the cavity 12 outside the stop structure 3 is difficult to pass through the stop structure 3 and enter the air outlets 2, thereby solving the problem that the condensed water enters the respiratory tract of the patient through the air outlets 2.

It will also be appreciated that, alternatively, at least a portion of the end of the stop structure 3 connected to the housing 11 may be spaced from the edge of the air outlet 2, i.e. only a portion of the end of the stop structure 3 connected to the housing 11 may extend from the edge of the air outlet 2, while another portion of the stop structure 3 connected to the end of the housing 11 is spaced from the edge of the air outlet 2, or that another portion of the stop structure 3 connected to the end of the housing 11 may be spaced entirely from the edge of the air outlet 2, as may occur if the stop structure 3 surrounds only one air outlet 2 or a plurality of air outlets 2.

Wherein, it is understood that the nasal prong generally includes two of the air outlets 2. The body 1 in the present application may be an integral and separate part, may be formed by assembling two or more parts together, or may be integrally formed with the stop structure 3, for example by integral injection molding.

In addition, referring to the figures, one end of the cavity 12 is formed as an air inlet end, the other end is formed as a closed end, and a connecting structure for connecting with a vent pipeline is formed on one side of the shell 11 corresponding to the air inlet end; the cavity 12 may include a ventilation channel (from the air inlet end to the closed end) perpendicular to the axial direction of the air outlet 2, the air flow flows in from the air inlet end and flows out from the air outlet 2, the ventilation channel has a first dimension (the dimension in the vertical direction in the drawing) along the axial direction of the air outlet 2, and the stop structure 3 extends in the cavity 12 not more than half of the first dimension, so as to facilitate smooth circulation of the air flow through the ventilation channel.

The nasal plug for the nasal oxygen catheter has the advantages of simple structure, low processing difficulty and low production cost, and can better play a role in reducing condensed water in the nasal plug cavity 12 from entering the respiratory tract of a patient through the air outlet 2, thereby optimizing user experience and improving product competitiveness.

It should be noted that the nasal plugs described above in the present invention may be used in any type of nasal oxygen delivery tube. Thus, a second aspect of the invention provides a nasal oxygen catheter comprising a ventilation circuit and a nasal prong as described above for the nasal oxygen catheter.

A third aspect of the invention provides a ventilation therapy device comprising a nasal oxygen catheter as described above.

The ventilation therapy device can also comprise a host machine serving as a gas source and a ventilation pipeline connected with the host machine, wherein the ventilation pipeline can comprise the nasal oxygen catheter.

In use, air from the host enters the nasal plugs through the ventilation tube and then passes from the nasal plugs into the nasal cavities of the users.

In the invention, the ventilation treatment device can be a breathing machine, an oxygen treatment device and the like, such as a high-flow oxygen treatment device and a high-flow humidification treatment device.

In the description herein, reference to the terms "one embodiment," "some embodiments," "for example," or "example," etc., means 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 invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this specification can be combined and combined by those skilled in the art without contradiction.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention. Including the various specific features, may be combined in any suitable manner, for example, by combining the feature that the end of the stop structure 3 connected to the housing 11 is spaced from the edge of the air outlet 2, the feature that the stop structure 3 includes two air outlets 2, and the feature that the stop structure 3 is provided with the reinforcing rib 31, so as to form another embodiment which is different from the embodiments in the drawings. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.

Claims

1. The nasal plug for the nasal oxygen catheter comprises a body (1), wherein the body (1) comprises a shell (11) and a cavity (12) positioned in the shell (11), at least one air outlet (2) is formed in the body (1), and the nasal plug is characterized by further comprising a stop structure (3) which surrounds the at least one air outlet (2) and extends from the inner wall of the shell (11) towards the inside of the cavity (12).

2. The nasal prong according to claim 1, wherein the stop structure (3) is formed with a reinforcement structure.

3. The nasal prong according to claim 2, wherein the reinforcing structure comprises a reinforcing rib (31); and/or the reinforcing structure comprises a flanging (32), and the flanging (32) is folded and extends towards the outside of the air outlet (2).

4. The nasal prong according to claim 1, wherein the stop structure (3) comprises a first end connected to the housing (11) and a second end extending into the cavity (12), the second end having an inner diameter larger than the inner diameter of the air outlet (2).

5. The nasal prong according to claim 4, wherein an inner diameter of the second end is greater than an inner diameter of the first end.

6. The nasal prong according to claim 1, wherein the stop structure (3) is a collar.

7. The nasal prong according to any one of claims 1 to 6, wherein the nasal prong comprises at least two air outlets (2), wherein the stop structure (3) surrounds all the air outlets (2) on the prong.

8. The nasal prong according to any one of claims 1 to 6, wherein one end of the cavity (12) is formed as an air inlet end and the other end is formed as a closed end, and a connection structure for connecting with a ventilation line is formed on a side of the housing (11) corresponding to the air inlet end.

9. A nasal oxygen catheter comprising a ventilation conduit and a nasal prong according to any one of claims 1 to 8.

10. A ventilation therapy device, characterized in that it comprises a nasal oxygen catheter according to claim 9.