WO2019029185A1 - Inhalation valve having bypass air duct, and ventilator - Google Patents

Abstract

An inhalation valve and a ventilator with a bypass airway. The inhalation valve includes an inspiratory valve body 1, a mount 2, a main airway diaphragm 101, and a bypass airway diaphragm 201. The intake valve body 1 is disposed on the mount 2, and the intake valve body 1 and the mount 2 are detachably connected. The intake valve body 1 is formed with a main air passage 10 and a bypass air passage 20. The main airway diaphragm 101 is installed in the main air passage 10, and the bypass air passage diaphragm 201 is disposed in the bypass air passage 20. The mount 2 includes an airway switching drive 211 for controlling the bypass airway diaphragm 201 to close and/or open. The ventilator includes the inhalation valve.

Description

Inhalation valve and ventilator with bypass airway

This application claims to be filed on August 9, 2017, the Chinese Patent Office, the application number is 201720991403.6, the priority of the Chinese patent application entitled "Inhalation valve and ventilator with bypass airway", the entire contents of which are incorporated by reference. Combined in this application.

Technical field

The present application relates to a medical device, and more particularly to an inhalation valve and a ventilator having a bypass airway.

Background technique

A ventilator is a device that can replace, control or change a person's normal physiological breathing. It is often used to increase the patient's lung ventilation, improve the patient's respiratory function, reduce respiratory power consumption, and save the patient's heart reserve. The inspiratory valve is an essential part of the ventilator and is often used as an interface for the patient to inhale the inspiratory air supply. The upstream of the inspiratory valve is often connected to the inspiratory flow control system, and downstream to the respiratory device, such as the breathing circuit, humidifier, and the like.

However, only one of the existing inspiratory valves is used only for the patient to inhale the gas, and the patient cannot pass the airway when the patient exhales the gas. Therefore, the existing inhalation valve is only suitable for the two-legged breathing circuit. The invasive breathing mode is not suitable for the non-invasive breathing mode of a single breathing circuit, so it is not compatible with the two, which leads to the existence of an invasive ventilator and a non-invasive ventilator in the ventilator currently on the market.

Summary of the invention

The main purpose of the present application is to provide an inhalation valve and a ventilator with a bypass airway, which aims to realize an integrated invasive breathing mode and a non-invasive breathing mode of the ventilator, which can be conveniently and quickly used by patients.

To achieve the above object, the present application provides an inhalation valve having a bypass air passage, the inhalation valve having a bypass air passage including an inhalation valve body and a mounting seat, the inhalation valve body being disposed at the The mounting seat is detachably connected to the mounting seat, and the suction valve body comprises: a main air passage, a bypass air passage, a main airway diaphragm and a bypass air passage membrane;

The main airway diaphragm is installed in the main airway;

The bypass airway membrane is disposed in the bypass air passage;

The mount includes an airway switching drive that controls the bypass airway diaphragm to close and/or open the bypass airway.

In addition, in order to achieve the above object, the present application further provides a ventilator including an inhalation valve having a bypass air passage, the ventilator further comprising a control panel, the control panel for controlling the gas The track switches the opening and/or closing of the drive.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a schematic structural view of an inhalation valve having a bypass air passage according to the present application;

Figure 2 is a schematic diagram of a gas path of an embodiment of an inhalation valve having a bypass air passage;

Figure 3 is a schematic diagram of a gas path of another embodiment of the inhalation valve with a bypass air passage of the present application;

Figure 4 is a schematic diagram of an inhalation valve exhalation mode of the present application with a bypass airway;

Figure 5 is a schematic view showing the structure of the ventilator of the present application.

Detailed ways

In order to make the objects, technical solutions, and advantages of the present application more comprehensible, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.

The main object of the present application is to provide an inhalation valve and a ventilator having a bypass airway.

Referring to FIG. 1, in the present embodiment, the inhalation valve having a bypass air passage includes an inhalation valve body 1, a mount 2, a main airway diaphragm 101, and a bypass airway diaphragm 201, the suction The air valve main body 1 is disposed on the mounting base 2, and is detachably connected to the mounting base 2. The intake valve main body 1 is formed with a main air passage 10 and a bypass air passage 20; the main air passage diaphragm 101 is installed in the main air passage 10; the bypass air passage diaphragm 201 is disposed in the bypass air passage 20. Specifically, in the present embodiment, the main airway diaphragm 101 is a flexible sheet-like structure, and the main airway diaphragm 101 has a connecting end and a free end, and the connecting end of the main airway diaphragm 101 is connected to the inner wall of the main air passage 10. The free end of the main airway diaphragm 101 is movable under the action of the air flow to bend the main airway diaphragm 101 to cause the main air passage 10 to open. In the present embodiment, the bypass airway diaphragm 201 is a rigid sheet-like structure.

The mount 2 includes an airway switching drive 211 that controls the bypass airway diaphragm 201 to close and/or open the bypass air passage 20.

In the present embodiment, the bypass air passage 20 has a first opening 203 and a second opening 204, and one end of the bypass air passage 20 communicates with the main air passage 10 through the first opening 203, bypassing the other end of the air passage 20. The main air passage 10 is in communication through the second opening 204. Further, the first opening 203 and the second opening 204 are respectively located at two sides of the main airway diaphragm 101. In the present embodiment, the bypass airway membrane 201 covers the second opening 204, and the second opening 204 is adjacent to the patient end with respect to the first opening 203. Of course, in other embodiments, the bypass airway membrane 201 can also cover the first opening 203. It will be appreciated that in other embodiments, the primary airway 10 and the bypass airway 20 may also be disposed in parallel and independently of one another.

In the embodiment, the suction valve body further includes a first spring 202. The air passage switching drive member 211 and the bypass air passage diaphragm 201 are connected by the first spring 202. Specifically, the mounting seat 2 is fixed on the frame of the ventilator as the base of the suction valve body, functions to restrain the main body of the suction valve and other components, and has a fixed supporting function for the main body of the suction valve. . The suction valve main body is detachably connected to the mounting seat, and can be detachably attached to the mounting seat 2 to facilitate cleaning of the suction valve main body. In addition, in this embodiment, the mounting seat 2 has a mounting cavity (not shown in FIG. 1). When the suction valve body is installed into the mounting cavity, the mounting cavity forms a suction with the outer surface of the suction valve body. The air pressure regulates the air passage (the suction air pressure adjustment air passage is not shown in Fig. 1). The mount 2 can be fixed to the frame by screw fastening or snapping. The number of bypass air passages 20 is at least one. When the number of bypass air passages 20 is plural, the plurality of bypass air passages 20 may be arranged in parallel in parallel or in series.

Specifically, the inhalation valve having a bypass air passage includes a main body of the inhalation valve, the main air passage 10 and the bypass air passage 20 are disposed on the main body of the inhalation valve; and the main air passage is disposed in the main air passage 10 The diaphragm 101; the air passage switching drive member 211 and the bypass air passage diaphragm 201 are disposed in the bypass air passage 20. The airway switching drive member 211 and the bypass airway diaphragm 201 may also be connected by means other than a spring. For example, the air passage switching drive member 211 and the bypass air passage diaphragm 201 may also pass through an elastic plastic member or a sleeve. The telescopic members are connected to meet the needs of the actual operation of the air passage switching drive member 211 of the intake valve main body 1.

In the present embodiment, the airway switching drive member 211 is an airway switching valve, and may be an airway switching electronic component; the bypass airway diaphragm 201 is disposed at the top end of the airway switching drive member. In the invasive breathing mode, when the patient inhales, the main airway diaphragm 101 is bent toward the airflow direction, the main airway 10 is opened, and the air source (which is not shown in FIG. 1) is air and/or Or oxygen enters the patient's end through the main airway 10 to complete the inhalation process; during exhalation, the gas such as carbon dioxide exhaled by the patient is exhaled through an external auxiliary device (not shown). In the non-invasive breathing mode, when the patient inhales, the main airway diaphragm 101 is bent toward the airflow direction, the main airway 10 is opened, and the air source (which is not shown in FIG. 1) is air and/or Oxygen enters the patient end through the main airway 10 to complete the inhalation process; when the patient exhales, the airway switching drive member 211 drives the bypass airway diaphragm 201 away from the second opening 204, so that the main airway 10 and the bypass The airway 20 is connected, and the carbon dioxide gas exhaled by the patient enters the bypass airway 20 from the main airway 10, and then escapes through the first opening 203, thereby completing a complete inhalation and exhalation process.

2 and FIG. 4, FIG. 2 is a schematic diagram of a gas path of an embodiment of an inhalation valve having a bypass air passage according to an embodiment of the present invention; FIG. 4 is a schematic diagram of an inhalation valve of an inhalation valve having a bypass air passage according to the present application. . In an embodiment, the main airway and the bypass airway are in a parallel relationship, so that when the airway switching drive stops energizing, the diaphragm 201 is in a closed state, and the gas passes through the main airway 10 to the main airway diaphragm 101. Pushing open, the air and/or oxygen in the air source (not shown in Figure 1) is sent to the patient end to complete the inhalation process; since the normal human breathing process includes inhalation and exhalation The process, and the inhalation process and the expiratory process alternate to meet the normal breathing needs of the human body. Specifically, as shown in FIG. 4, after the inhalation process is completed, the exhalation process is started, the airway switching drive member starts to be energized, and the airway switching drive member 211 drives the bypass airway diaphragm 201 away from the second opening 204. Further, a blocking member is disposed on the inner wall of the main airway, and the blocking member can prevent the main airway diaphragm 101 from being bent away from the patient end, so that the gas exhaled by the patient end (gas such as carbon dioxide) cannot pass through the main airway 10 The airway diaphragm 101 is pushed open and can only be energized by the airway switching drive member, so that the exhalation can be expelled through the airway switching drive member and the bypass air passage 20, thereby completing the process of exhalation and thus having a bypass airway. The inspiratory valve meets the needs of both practical applications of non-invasive breathing mode and invasive breathing mode.

3 and FIG. 4, FIG. 3 is a schematic diagram of a gas path of another embodiment of an inhalation valve having a bypass air passage according to the present application; FIG. 4 is a schematic diagram of an inhalation valve of an inhalation valve having a bypass air passage according to the present application; c. In another embodiment, the primary airway and the bypass airway are in a selective relationship. During the inhalation process, the airway switching drive member is not energized, the bypass airway diaphragm 201 closes the second opening 204, the gas pushes the main airway diaphragm 101 through the main air passage 10, and the gas is passed through the main air passage 10. The process of inhalation is performed to the patient end; during the exhalation process, the channel is switched to the bypass airway 20, and the control airway switching drive moves the bypass diaphragm 201 away from the second opening 204, thereby bypassing the airway 20 connected, the gas exhaled by the patient end reaches the outside through the bypass airway. It can be understood that, in another breathing mode, during the inhalation process, the airway switching drive is energized, bypassing the airway diaphragm 201 away from the second opening 204, allowing the bypass air passage 20 to communicate, air and/or Oxygen enters the patient's end through the bypass airway 20, and during exhalation, the gas exhaled by the patient, such as carbon dioxide, is exhaled through an external auxiliary device. Therefore, the setting of the air circuit schematic b of the intake valve with the bypass air passage satisfies the need for practical application of the non-invasive breathing mode or the invasive breathing mode.

It can be understood that, in another embodiment, the main air passage and the bypass air passage are in a selective relationship. Further, the main air passage and the bypass air passage are two independent channels, a main air passage and a bypass air. The opening and closing of the road is controlled by means of a three-way valve. In the invasive breathing mode, the main airway and the bypass airway can be used as the patient's inspiratory channel; when the three-way valve is switched so that the main airway is connected, the bypass airway is closed, at this time air and / or oxygen Through the main airway into the patient's end, during exhalation, the gas exhaled by the patient is exhaled through an external auxiliary device; when the three-way valve is switched to the bypass airway, the main airway is closed, at this time air and / Or oxygen enters the patient's end through the bypass airway. During the exhalation process, the gas exhaled by the patient is exhaled through an external auxiliary device.

The present invention realizes that the ventilator integrates the invasive breathing mode and the non-invasive breathing mode by setting the bypass airway and the bypass airway diaphragm, and controlling the opening or closing of the bypass air passage by the airway switching driving member, which is convenient and quick. For patient use.

The application also provides a ventilator.

Referring to FIG. 5, FIG. 5 is a schematic structural view of a ventilator of the present application.

In the present embodiment, the ventilator includes the inspiratory valve body 1 and the mount 2, and further includes a control panel 3 for controlling the opening and/or closing of the airway switching drive member 211.

Specifically, the ventilator includes an inhalation valve having a bypass air passage and a control panel 3, and a gas source, a power outlet 5, and a switch button 4. In the present embodiment, the air source and the control panel 3 are connected in a manner of electrical signal feedback, thereby enabling adjustment of the intake valve to open and/or close.

The power socket 5 is disposed in a rear casing of the ventilator for connecting the ventilator to an external power grid, and the ventilator further includes a power cord and a power adapter. (The power cord and the power adapter are also not shown in the figure. ). The ventilator's inhalation valve can be electrically connected to an external power source through a power outlet 5, a power cord, and a power adapter for ease of use.

The switch button 4 is disposed on an upper surface of the ventilator for controlling opening and closing of the ventilator; when the user uses the inhalation valve, the ventilator can be turned on by turning on the switch button 4; After the end of use, the ventilator can be turned off by turning off the switch button 4.

The application adopts the above technical solution to realize the integration of the invasive breathing mode and the non-invasive breathing mode of the ventilator, which can be conveniently and quickly used by the patient.

The above is only a part of the embodiments of the present application, and thus does not limit the scope of patents of the present application, and the equivalent structure or equivalent process transformation made by using the contents of the specification and the drawings of the present application, or directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of this application.

Claims (12)

An inhalation valve having a bypass air passage, wherein the inhalation valve having a bypass air passage includes a suction valve main body, a mounting seat, a main airway diaphragm, and a bypass air passage diaphragm. The suction valve body is disposed on the mounting seat, the suction valve body is detachably connected to the mounting seat, and the intake valve body is formed with a main air passage and a bypass air passage; The main airway diaphragm is installed in the main airway and is capable of controlling opening or closing of the main airway; The bypass airway membrane is disposed in the bypass air passage and is capable of controlling opening or closing of the bypass air passage; The mount includes an airway switching drive that controls the bypass airway diaphragm to close and/or open the bypass airway. The intake valve with a bypass air passage according to claim 1, wherein the mounting seat is fixed to the frame by screw fastening or snapping. The inhalation valve with a bypass air passage according to claim 1, wherein the number of said bypass air passages is at least one. The intake valve with a bypass air passage according to claim 1, wherein said suction valve body further comprises a first spring, said air passage switching drive member and said bypass air passage diaphragm pass The first spring is connected. The intake valve with a bypass air passage according to claim 1, wherein the air passage switching drive member is an air passage switching valve or an air passage switching electronic component. The intake valve with a bypass air passage according to claim 1, wherein said bypass air passage has a first opening and a second opening, and one end of said bypass air passage passes through said first opening Communicating with the main air passage, the other end of the bypass air passage is in communication with the main air passage through the second opening. The inhalation valve with a bypass air passage according to claim 6, wherein said first opening and said second opening are respectively located on both sides of said main airway diaphragm. A getter valve with a bypass air passage according to claim 6 wherein said bypass airway diaphragm covers said first opening or said second opening. The intake valve with a bypass air passage according to claim 1, wherein said main airway diaphragm has a connecting end and a free end, said connecting end being connected to an inner wall of said main air passage, The free end is movable under the action of the air stream to cause the main airway diaphragm to bend and thereby cause the main air passage to open. A ventilator, comprising the intake valve having a bypass air passage according to claim 1, the ventilator further comprising a control panel, wherein the control panel is configured to control the air passage switching drive member Turn it on and/or off. The ventilator of claim 10 wherein said ventilator further comprises a power outlet. The ventilator of claim 10 wherein said ventilator further comprises a switch button.

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