CN118615547A

CN118615547A - Exhalation valve and breathing machine

Info

Publication number: CN118615547A
Application number: CN202410909151.2A
Authority: CN
Inventors: 杜文佳; 王瑞强; 叶巧; 胡国亮; 王松
Original assignee: Ambulanc Shenzhen Tech Co Ltd
Current assignee: Ambulanc Shenzhen Tech Co Ltd
Priority date: 2024-07-08
Filing date: 2024-07-08
Publication date: 2024-09-10

Abstract

The invention provides an exhalation valve and a breathing machine, wherein the exhalation valve comprises a shell, a valve body, a diaphragm and an adjusting component; the valve body is arranged in the shell, and an installation gap exists between the air outlet end of the valve body and the first end of the shell; the diaphragm and the adjusting component are sequentially arranged in the mounting gap, a first side face of the diaphragm is connected with the air outlet end of the valve body, and a second side face of the diaphragm is in contact with the adjusting component; the adjusting component is used for adjusting the diaphragm, so that the first side surface of the diaphragm is parallel to the end surface of the air outlet end of the valve body. According to the invention, the posture of the diaphragm can be regulated through the regulating component, and the stress in any direction can keep the first side surface of the diaphragm and the end surface of the air outlet end of the valve body in a parallel state, so that the stable air flow is facilitated, the air flow does not influence the diaphragm, the vibration and resonance of the diaphragm are avoided, howling is generated, the flow vibration of the breathing machine is cooperatively caused, and the patient is not suitable for the situation.

Description

Exhalation valve and breathing machine

Technical Field

The invention relates to the technical field of respirators, in particular to an exhalation valve and a respirator.

Background

Exhalation valves are an integral and important component of ventilators, and are used primarily to help patients regulate and control the flow and rate of exhalation of gases, thereby maintaining the patency and comfort of breathing. The exhalation valve opens during the exhalation phase, allowing exhaust gases to escape from the patient's airway; in the inspiration phase, the exhalation valve is closed to prevent fresh gas from flowing out in the inspiration phase; the design of the exhalation valve helps to avoid excessive inhalation of carbon dioxide and maintains the proper function of the respiratory system.

The current expiratory valve mainly comprises a shell, a valve body, a diaphragm and a driving piece, wherein the valve body and the diaphragm are both arranged in the shell, the diaphragm is connected with the driving piece, and the driving piece is used for tightly propping the diaphragm to be arranged at the air outlet end of the valve body. The use of an exhalation valve on a ventilator when the ventilator is providing a base flow in the exhalation phase means that even during the exhalation phase, there is additional gas being expelled through the exhalation valve; such a base flow may result in incomplete closing of the diaphragm, especially in low flow high pressure situations. Under the condition of low flow and high pressure, when the diaphragm and the air outlet end of the valve body are not completely sealed, the driving part can possibly push the diaphragm obliquely and loose at one side, and because the air flow itself has unstable conditions, diaphragm shake and resonance easily occur, howling is generated, flow shake of the breathing machine is cooperatively caused, and patients are not suitable for the situation.

Disclosure of Invention

The invention provides an exhalation valve and a breathing machine, which are used for solving the problems that the existing breathing valve is easy to generate diaphragm shake and resonance, and howling is generated and flow shake of the breathing machine is cooperatively caused.

An exhalation valve comprises a housing, a valve body, a diaphragm and an adjustment assembly;

the valve body is arranged in the shell, and an installation gap exists between the air outlet end of the valve body and the first end of the shell;

the diaphragm and the adjusting component are sequentially arranged in the mounting gap, a first side face of the diaphragm is connected with the air outlet end of the valve body, and a second side face of the diaphragm is in contact with the adjusting component;

the adjusting component is used for adjusting the diaphragm, so that the first side surface of the diaphragm is parallel to the end surface of the air outlet end of the valve body.

Preferably, the adjusting assembly comprises a driving member, a universal head and a universal pushrod;

the driving piece is arranged on the first end of the shell and is connected with the first end of the universal head;

The first end of the universal push rod is provided with a clamping groove, and the second end of the universal head is movably arranged in the clamping groove;

The driving piece drives the universal push rod to move through the universal head, so that the second end of the universal push rod is vertically attached to the second side face of the diaphragm.

Preferably, the second end of the universal head is provided with a spherical joint, and the clamping groove is provided with a circular arc groove.

Preferably, the universal push rod comprises a main body disc and a connecting column which extends from the center of one end face of the main body disc, which is close to the universal head, along the axial direction of the main body disc;

The connecting column is towards the one end of universal head is equipped with the joint groove.

Preferably, the membrane is a PEEP membrane.

Preferably, the diaphragm comprises a main body ring, a deformation part extending from the inner wall of one end of the main body ring along the radial direction, and a receiving disc extending from one side of the deformation part away from the main body ring along the radial direction;

the main body ring is sleeved on the air outlet end of the valve body, and the bearing disc is in contact with the adjusting component.

Preferably, the other end of the main body ring is provided with a clamping groove, the air outlet end of the valve body is provided with a clamping protrusion, and the clamping groove is matched with the clamping protrusion.

Preferably, the housing comprises a main body housing, a mounting housing disposed on a first side of the main body housing, a draft tube disposed on a second side of the main body housing, and a spacing housing disposed at a first end of the main body housing;

The valve body is placed in the main body shell and fixed in the installation shell, and the air outlet end of the valve body is contacted with the first end of the main body shell;

the part of the valve body close to the air outlet end is communicated with the flow guide pipe;

The diaphragm and the adjusting component are sequentially arranged in the limiting shell.

Preferably, the valve body comprises a rear body and a front body;

The rear body and the front body are sequentially arranged in the main body shell, the end face of the air outlet end of the rear body is contacted with the first end of the main body shell, and the air outlet end of the front body is arranged at the air inlet end of the rear body;

An air duct is arranged on the part of the rear body close to the air outlet end, and the air duct is communicated with the guide pipe;

the second end of the back body is connected with the first end of the front body, and a mounting structure is arranged at the joint of the second end of the back body and the first end of the front body and is fixed in the mounting shell.

Preferably, the mounting structure comprises a connection plate and a mounting post;

the second end of the rear body and the first end of the front body are both provided with the connecting plate;

the first end of the mounting column is mounted in the mounting shell, and the connecting plate is mounted at the second end of the mounting column.

Preferably, the exhalation valve further comprises a flow sensor air lock disposed between the front body and the rear body.

Preferably, the exhalation valve further comprises a rotary torsion cover which is sleeved on the air inlet end of the valve body and is connected with the housing.

Preferably, the driving member is a voice coil motor.

A ventilator comprising said exhalation valve.

The exhalation valve provided by the embodiment of the invention is a structure which is arranged at an exhalation port of a breathing machine and is used for controlling and regulating the exhalation of gas; the valve comprises a shell, a valve body, a diaphragm and an adjusting component. When in installation, the shell is used as a supporting reference for installing other parts of the exhalation valve; the valve body is arranged in the shell, an installation gap exists between the air outlet end of the valve body and the first end of the shell, the diaphragm and the adjusting component are sequentially arranged in the installation gap, the first side face of the diaphragm is connected with the air outlet end of the valve body, the second side face of the diaphragm is in contact with the adjusting component, the posture of the diaphragm can be adjusted through the adjusting component, the first side face of the diaphragm and the end face of the air outlet end of the valve body can be kept in a parallel state due to stress in any direction, stable air flow is facilitated, the air flow does not influence the diaphragm, vibration and resonance of the diaphragm are avoided, howling is generated, flow vibration of a breathing machine is cooperatively caused, the phenomenon that a patient is not suitable is caused, the use experience is improved, and meanwhile, a great deal of manpower and time are not required to be spent for carrying out early-stage testing, good product use is selected, and the purpose of saving cost is achieved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an isometric view of an exhalation valve in an example embodiment of the invention;

FIG. 2 is a cross-sectional view of an exhalation valve in an embodiment of the present invention;

Fig. 3 is an exploded view of an exhalation valve in an embodiment of the present invention.

Wherein, 1, the shell; 11. a main body case; 12. a mounting shell; 13. a flow guiding pipe; 14. a limit shell; 15. a fixed plate; 2. a valve body; 21. a rear body; 22. a precursor; 23. an air duct; 3. a membrane; 31. a body ring; 32. a deformation section; 33. a receiving tray; 4. an adjustment assembly; 41. a driving member; 42. a universal head; 43. a universal push rod; 431. a main body tray; 432. a connecting column; 5. a clamping groove; 6. the clamping bulge; 7. flow sensor air resistance; 8. rotating the torsion cover; 9. a mounting structure; 91. a connecting plate; 92. and (5) mounting a column.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "longitudinal," "radial," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

An embodiment of the present invention provides an exhalation valve, referring to figures 1, 2 and 3, that includes a housing 1, a valve body 2, a diaphragm 3 and a regulator assembly 4; the valve body 2 is arranged in the shell 1, and an installation gap exists between the air outlet end of the valve body 2 and the first end of the shell 1; the diaphragm 3 and the adjusting component 4 are sequentially arranged in the mounting gap, a first side surface of the diaphragm 3 is connected with the air outlet end of the valve body 2, and a second side surface of the diaphragm 3 is contacted with the adjusting component 4; and the adjusting component 4 is used for adjusting the diaphragm 3 so that the first side surface of the diaphragm 3 is parallel to the end surface of the air outlet end of the valve body 2.

As an example, an exhalation valve is a structure that is provided at the exhalation port of a ventilator for controlling and regulating the exhalation of gas; specifically comprises a shell 1, a valve body 2, a diaphragm 3 and an adjusting component 4. When in installation, the shell 1 is used as a supporting reference for installing other parts of the exhalation valve; the valve body 2 is arranged in the shell 1, an installation gap exists between the air outlet end of the valve body 2 and the first end of the shell 1, the diaphragm 3 and the adjusting component 4 are sequentially arranged in the installation gap, the first side face of the diaphragm 3 is connected with the air outlet end of the valve body 2, the second side face of the diaphragm 3 is in contact with the adjusting component 4, the posture of the diaphragm 3 can be adjusted through the adjusting component 4, stress in any direction can keep the first side face of the diaphragm 3 in a parallel state with the end face of the air outlet end of the valve body 2, stable air flow is facilitated, the air flow does not influence the diaphragm 3, vibration and resonance of the diaphragm 3 are avoided, howling is generated, flow vibration of a breathing machine is cooperatively caused, a patient is not suitable for the phenomenon, use experience is improved, and meanwhile, a great deal of manpower and time are not required to be spent for carrying out early test, good product selection and use are achieved, and the purpose of saving cost is achieved. Wherein the housing 1 comprises. The main materials of the exhalation valve are PPSU and SUS304, so that the exhalation valve can be removed for high-temperature elimination.

In one embodiment, referring to fig. 2 and 3, the adjustment assembly 4 includes a drive 41, a universal head 42, and a universal pushrod 43; the driving member 41 is mounted on the first end of the housing 1 and connected to the first end of the universal head 42; the first end of the universal push rod 43 is provided with a clamping groove 5, and the second end of the universal head 42 is movably arranged in the clamping groove 5; the driving piece 41 drives the universal push rod 43 to move through the universal head 42, so that the second end of the universal push rod 43 is vertically attached to the second side surface of the diaphragm 3.

As an example, the adjustment assembly 4 includes a drive 41, a universal head 42, and a universal pushrod 43; when in installation, the driving piece 41 is installed on the first end of the shell 1 and is connected with the first end of the universal head 42; the first end of the universal push rod 43 is provided with the clamping groove 5, and the second end of the universal head 42 is movably arranged in the clamping groove 5, so that the universal push rod 43 can rotate on the universal head 42 at will, the auxiliary diaphragm 3 and the air outlet end of the valve body 2 are always in a parallel state, the condition of tight and loose sides is not caused, and the air flow does not influence the diaphragm 3; the driving piece 41 drives the universal push rod 43 to move through the universal head 42, so that the second end of the universal push rod 43 is vertically attached to the second side surface of the diaphragm 3, the diaphragm 3 is ensured to be stressed in any direction, the diaphragm 3 and the air outlet end of the valve body 2 are kept in a parallel state, the stable air flow is facilitated, and the situations of howling and flow jitter caused by resonance can be solved.

In an embodiment, referring to fig. 2 and 3, the second end of the universal head 42 is configured as a ball joint, and the clamping groove 5 is configured as a circular arc groove.

As an example, the second end of the universal head 42 is set to be a spherical joint, the clamping groove 5 is set to be a circular arc groove, the spherical joint is matched with the circular arc groove, so that the universal push rod 43 is conveniently installed at the second end of the universal head 42, the universal push rod 43 can rotate on the universal head 42 at will, the auxiliary diaphragm 3 and the air outlet end of the valve body 2 are always in a parallel state, the condition that the air flow is tight and loose is not caused, and the diaphragm 3 is not affected by the air flow.

In one embodiment, referring to fig. 2 and 3, gimbal pushrod 43 includes a body disk 431 and a connecting post 432 extending axially from the center of body disk 431 near an end face of gimbal head 42 along body disk 431;

The end of the connecting post 432 facing the universal head 42 is provided with a clamping groove 5.

As an example, universal pushrod 43 includes a body disk 431 and a connecting post 432; coupling post 432 extends axially from body disk 431 along the center of body disk 431 near an end face of gimbaled head 42; the main body disk 431 is used for contacting with the second side surface of the diaphragm 3, and a clamping groove 5 is arranged at one end of the connecting post 432 facing the universal head 42, and the clamping groove 5 is matched with the second end of the universal head 42, so that the universal push rod 43 is conveniently mounted on the universal head 42.

In an embodiment, referring to fig. 2 and 3, the membrane 3 is provided as PEEP membrane.

As an example, the membrane 3 is provided as a PEEP membrane, which is a key component in the exhalation valve for achieving Positive End Expiratory Pressure (PEEP), by which the PEEP effect is produced on the physical resistance of the exhalation flow, thereby helping the patient to improve the respiratory function. State of PEEP membrane at different working phases: and (3) absorbing gas phase: the state of the PEEP diaphragm at this point depends on the ventilator settings and the patient's breathing conditions, but the effect of the PEEP value on the diaphragm is generally not dominant at this stage. Breathing phase, PEEP value greater than 0: during the exhalation phase, if the PEEP value is greater than 0, this means that a certain positive pressure is maintained in the respiratory tract, which affects the open and closed state of the PEEP membrane. When the PEEP value is high, the diaphragm may be in an incompletely closed state to maintain positive pressure in the respiratory tract. Breathe out gas phase, PEEP value equals 0: during the expiration phase, where PEEP is 0, the membrane should theoretically be completely closed, but the actual situation may vary depending on the design of the ventilator and the breathing situation of the patient. Depending on the different respirators, there are some base flows (the base flow is the one that the respirators are breathing the gas phase, and the respirators are providing an additional flow of 3-5L to be exhausted through the exhalation valve), and the base flow can be simply understood as the diaphragm 3 and the outlet end of the valve body 2 are not completely sealed in either case). Problems that may occur with PEEP diaphragms in exhalation valves during different phases of operation are related to the ventilator settings, the patient's breathing conditions, and the base flow. In order to avoid the problems of diaphragm vibration, resonance and the like, the factors need to be comprehensively considered, and corresponding measures are taken for adjustment and maintenance.

In an embodiment, referring to fig. 2 and 3, the diaphragm 3 includes a body ring 31, a deformation portion 32 extending radially from an inner wall of one end of the body ring 31, and a receiving plate 33 extending radially from a side of the deformation portion 32 away from the body ring 31; the body ring 31 is sleeved on the air outlet end of the valve body 2, and the bearing disc 33 is in contact with the adjusting assembly 4.

As an example, the diaphragm 3 includes a body ring 31, a deformation portion 32, and a receiving disk 33; when in installation, the main body ring 31 is used for being sleeved on the air outlet end of the valve body 2, and air flows out from between the main body ring 31 and the air outlet end of the valve body 2; the deformation part 32 extends from the inner wall of one end of the main body ring 31 along the radial direction, and is deformed under the stress, so that the inner diameter of the main body ring 31 can be changed, and the main body ring 31 is conveniently sleeved on the air outlet end of the valve body 2; the bearing disc 33 extends radially from one side of the deformation part 32 away from the main body ring 31, the bearing disc 33 is in contact with the adjusting component 4, the universal push rod 43 of the adjusting component 4 can rotate on the universal head 42 at will, the auxiliary bearing disc 33 and the air outlet end of the valve body 2 are always in a parallel state, the condition of tight and loose sides is not caused, and the air flow does not influence the membrane 3; the driving piece 41 drives the universal push rod 43 to move through the universal head 42, so that the second end of the universal push rod 43 is vertically attached to the second side surface of the diaphragm 3, the diaphragm 3 is ensured to be stressed in any direction, the diaphragm 3 and the air outlet end of the valve body 2 are kept in a parallel state, the stable air flow is facilitated, and the situations of howling and flow jitter caused by resonance can be solved.

In an embodiment, referring to fig. 2 and 3, the other end of the main body ring 31 is provided with a clamping groove 5, and the air outlet end of the valve body 2 is provided with a clamping protrusion 6, and the clamping groove 5 is matched with the clamping protrusion 6.

As an example, the other end of the main body ring 31 is provided with a clamping groove 5, the air outlet end of the valve body 2 is provided with a clamping protrusion 6, the clamping groove 5 is matched with the clamping protrusion 6, so that the main body ring 31 is conveniently sleeved on the air outlet end of the valve body 2, and convenience is provided for mounting and dismounting between the membrane 3 and the valve body 2.

In one embodiment, referring to fig. 3, the housing 1 includes a body housing 11, a mounting housing 12 disposed on a first side of the body housing 11, a flow guide 13 disposed on a second side of the body housing 11, and a stopper housing 14 disposed at a first end of the body housing 11; the valve body 2 is placed in the main body shell 11 and fixed in the installation shell 12, and the air outlet end of the valve body 2 is contacted with the first end of the main body shell 11; the part of the valve body 2 close to the air outlet end is communicated with the flow guide pipe 13; the membrane 3 and the adjusting assembly 4 are arranged in the limiting shell 14 in sequence.

As an example, the housing 1 includes a main body housing 11, a mounting housing 12, a flow guide tube 13, and a limit housing 14; the main body shell 11 is used as a main body part for placing the valve body 2, and the air outlet end of the valve body 2 is contacted with the first end of the main body shell 11, so that the valve body 2 is limited and is prevented from sliding out of the first end of the main body shell 11; a mounting case 12 is provided on a first side of the body case 11 for fixing the valve body 2 by other structures; the flow guide pipe 13 is arranged on the second side surface of the main body shell 11 and is used for communicating with the part of the valve body 2 close to the air outlet end so as to exchange air; a limiting housing 14 is provided at a first end of the main housing 11 for mounting the diaphragm 3 and the adjustment assembly 4.

In an embodiment, referring to fig. 2 and 3, the valve body 2 includes a rear body 21 and a front body 22; the rear body 21 and the front body 22 are sequentially arranged in the main body shell 11, the end face of the air outlet end of the rear body 21 is contacted with the first end of the main body shell 11, and the air outlet end of the front body 22 is arranged at the air inlet end of the rear body 21; the part of the rear body 21 close to the air outlet end is provided with an air duct 23, and the air duct 23 is communicated with the guide pipe 13; a mounting structure 9 is provided at the junction of the second end of the rear body 21 and the first end of the front body 22, the mounting structure 9 being secured within the mounting housing 12.

As an example, the valve body 2 includes a rear body 21 and a front body 22; during installation, the rear body 21 and the front body 22 are sequentially installed in the main body shell 11, the end face of the air outlet end of the rear body 21 is contacted with the first end of the main body shell 11, an installation gap is formed between the front body and the limiting shell 14, the diaphragm 3 and the adjusting component 4 are sequentially arranged in the installation gap, the first side face of the diaphragm 3 is connected with the air outlet end of the rear body 21, the second side face of the diaphragm 3 is contacted with the adjusting component 4, the air outlet end of the front body 22 is installed at the air inlet end of the rear body 21, and the front body 22 and the rear body 21 are matched for discharging waste gas blown by a patient; the part of the rear body 21 close to the air outlet end is provided with an air duct 23, and the air duct 23 is communicated with the flow guide pipe 13 so as to facilitate ventilation; the junction of the second end of the rear body 21 and the first end of the front body 22 is provided with a mounting structure 9, the mounting structure 9 being secured within the mounting shell 12 to facilitate securing the front body 21 and the rear body 22 within the housing 1. The gesture that sets up through adjusting part 4 can adjust diaphragm 3 like this, the first side of diaphragm 3 and the terminal surface that back body 21 gave vent to anger the end all are kept parallel state to any direction atress, do benefit to stable air current, make the air current not influence diaphragm 3, avoid appearing diaphragm 3 shake and resonance, produce the squeaking sound and arouse the flow shake of breathing machine in coordination, cause the patient to do not adapt to the present, improve and use and experience, do not need spending a large amount of manpowers and time simultaneously and carry out earlier stage test, select the yields and use, reach the purpose of saving the cost. Wherein, an O-shaped sealing ring is arranged between the front body 22 and the rear body 21, so that the tightness between the front body and the rear body can be ensured.

In one embodiment, referring to fig. 3, the mounting structure 9 includes a connection plate 91 and a mounting post 92; the second end of the rear body 22 and the first end of the front body 21 are provided with a connecting plate 91; a first end of the mounting post 92 is mounted within the mounting housing 12 and a connecting plate 91 is mounted at a second end of the mounting post 92.

As an example, the mounting structure 9 includes a connection plate 91 and a mounting post 92; in the mounting process, the connecting plates 91 are arranged at the second end of the rear body 22 and the first end of the front body 21, the first end of the mounting column 92 is mounted in the mounting shell 12, and then the two connecting plates 91 are mounted at the second end of the mounting column 92, so that the rear body 22 and the front body 21 can be fixed in the mounting shell 12, and the valve body 2 can be stably mounted in the housing 1. The number of the mounting posts 92 may be one or two; when the mounting column 92 is one, the two connection plates 91 are sequentially mounted on the mounting column 92; when there are two mounting posts 92, the two mounting posts 92 are arranged in parallel at a spacing, and the two connecting plates 91 are respectively mounted on the two mounting posts 92. In addition, a limiting groove is formed in the mounting shell 12, an elastic ring is sleeved on the first end of the mounting column 92, the elastic ring can deform by utilizing the elasticity of the elastic ring, the elastic ring is conveniently clamped in the limiting groove, and the mounting column 92 is convenient to mount and dismount.

In an embodiment, referring to fig. 2 and 3, the exhalation valve further includes a flow sensor air lock 7, the flow sensor air lock 7 being disposed between the front body 22 and the rear body 21.

As an example, the exhalation valve further comprises a flow sensor air lock 7, the flow sensor air lock 7 being arranged between the front body 22 and the rear body 21, which can ensure the smoothness and safety of the breathing process by monitoring and adjusting the flow of exhaled air. Wherein, the flow sensor air lock 7 adopts differential pressure flow sensor air lock.

In an embodiment, referring to fig. 1 and 3, the exhalation valve further comprises a rotary twist cap 8, wherein the rotary twist cap 8 is sleeved on the air inlet end of the valve body 2 and is connected with the housing 1.

As an example, the exhalation valve further comprises a rotary twist cover 8, when in installation, the rotary twist cover 8 is sleeved on the air inlet end of the valve body 2 and is connected with the housing 1, and a fixed disc 15 is specifically arranged at the second end of the main body housing 11, and the rotary twist cover 8 is installed on the fixed disc 15; the rotary torsion cover 8 can play a role in sealing, so that the isolation between the inside of the exhalation valve and the external environment is ensured, and leakage of gas, liquid or other mediums is prevented; the size or shape of the internal passage of the exhalation valve can also be changed by rotating the twist cap 8, thereby affecting the flow or pressure of the gas, allowing the user to make manual adjustments as needed to meet specific breathing or gas exchange requirements; the design of the rotary twist cap 8 makes maintenance and cleaning of the exhalation valve more convenient, and a user can easily open or close the twist cap to check the internal state of the exhalation valve, clean impurities inside, or replace damaged parts.

In one embodiment, referring to fig. 2 and 3, the driving member 41 is a voice coil motor.

As an example, the driving member 41 is a voice coil motor, which is mounted on the first end of the housing 1 and connected to the first end of the universal head 42; the first end of the universal push rod 43 is provided with the clamping groove 5, and the second end of the universal head 42 is movably arranged in the clamping groove 5, so that the universal push rod 43 can rotate on the universal head 42 at will, the auxiliary diaphragm 3 and the air outlet end of the valve body 2 are always in a parallel state, the condition of tight and loose sides is not caused, and the air flow does not influence the diaphragm 3; the voice coil motor linear motion can drive universal push rod 43 through universal head 42 and remove, seals or release diaphragm 3 to make the perpendicular laminating of the second side of universal push rod 43 and diaphragm 3, guarantee that diaphragm 3 atress in any direction makes diaphragm 3 and the end of giving vent to anger of valve body 2 keep parallel state, do benefit to stable air current, can solve the condition that howling and flow shake that resonance caused.

The embodiment of the invention provides a breathing machine, which comprises an exhalation valve.

As an example, a ventilator includes an exhalation valve; exhalation valves are an integral and important component of ventilators, and are used primarily to help patients regulate and control the flow and rate of exhalation of gases, thereby maintaining the patency and comfort of breathing. The exhalation valve opens during the exhalation phase, allowing exhaust gases to escape from the patient's airway; in the inspiration phase, the exhalation valve is closed to prevent fresh gas from flowing out in the inspiration phase; the design of the exhalation valve helps to avoid excessive inhalation of carbon dioxide and maintains the proper function of the respiratory system. The exhalation valve is applied to the breathing machine, and according to different breathing machines and different specific situations, a base flow can be added (the base flow is that when the breathing machine exhales into a gas phase, the breathing machine additionally provides a flow of 3-5L to be discharged through the exhalation valve), and the base flow can be simply understood that the diaphragm 3 and the gas outlet end of the valve body 2 are not completely sealed under any situation). When the ventilator provides a base flow in the expiratory phase, this means that even during the expiratory phase, there is additional gas to be expelled through the expiratory valve; such a basic flow may lead to an incomplete closing of the membrane 3, especially in case of low flow and high pressure. Under the condition of low flow and high pressure, when the diaphragm 3 and the air outlet end of the valve body 2 are not completely sealed, the driving piece 41 may tilt the diaphragm 3, and loose the diaphragm while the diaphragm is tight, because the air flow itself has unstable conditions, vibration and resonance of the diaphragm 3 easily occur, howling is generated, flow vibration of the breathing machine is cooperatively caused, the patient is not suitable for the condition that the breathing machine is an indispensable important part, when the breathing machine works, the patient discharges waste gas through the breathing machine, and the quality of the breathing machine directly influences the performance of the breathing machine and the experience of the patient. The exhalation valve in this example comprises a housing 1, a valve body 2, a diaphragm 3 and a regulating assembly 4. When in installation, the shell 1 is used as a supporting reference for installing other parts of the exhalation valve; the valve body 2 is arranged in the shell 1, an installation gap exists between the air outlet end of the valve body 2 and the first end of the shell 1, the diaphragm 3 and the adjusting component 4 are sequentially arranged in the installation gap, the first side face of the diaphragm 3 is connected with the air outlet end of the valve body 2, the second side face of the diaphragm 3 is in contact with the adjusting component 4, the posture of the diaphragm 3 can be adjusted through the adjusting component 4, stress in any direction can keep the first side face of the diaphragm 3 in a parallel state with the end face of the air outlet end of the valve body 2, stable air flow is facilitated, the air flow does not influence the diaphragm 3, vibration and resonance of the diaphragm 3 are avoided, howling is generated, flow vibration of a breathing machine is cooperatively caused, a patient is not suitable for the phenomenon, use experience is improved, and meanwhile, a great deal of manpower and time are not required to be spent for carrying out early test, good product selection and use are achieved, and the purpose of saving cost is achieved. The main difference from the conventional exhalation valve in the world is that the exhalation valve can adjust the diaphragm 3 mainly through the cooperation of the universal push rod 43 and the universal head 42 of the adjusting component 4, so that the diaphragm 3 and the air outlet end of the valve body 2 always reach a parallel state, and the situation that the diaphragm 3 and the air outlet end of the valve body 2 are pressed and loosened simultaneously is avoided, in this case, the diaphragm 3 shakes due to the air flow, howling is generated, and the flow shakes due to the shaking of the diaphragm 3.

The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.

Claims

1. An exhalation valve is characterized by comprising a shell, a valve body, a diaphragm and an adjusting component;

2. The exhalation valve of claim 1, wherein the adjustment assembly comprises a drive, a universal head, and a universal pushrod;

3. The exhalation valve of claim 2, wherein the second end of the universal head is provided as a ball joint and the snap-fit groove is provided as a circular arc-shaped groove.

4. The exhalation valve of claim 2, wherein said universal pushrod comprises a body disk and a connecting post extending axially along said body disk from a center of said body disk proximate an end face of said universal head;

5. The exhalation valve of claim 1, wherein the diaphragm is a PEEP diaphragm.

6. The exhalation valve of claim 1, wherein said diaphragm comprises a body ring, a deformation portion extending radially from an inner wall of one end of said body ring, and a receiving disk extending radially from a side of said deformation portion remote from said body ring;

7. The exhalation valve of claim 6, wherein the other end of the main body ring is provided with a clamping groove, and the air outlet end of the valve body is provided with a clamping protrusion, and the clamping groove is matched with the clamping protrusion.

8. The exhalation valve of claim 1, wherein the housing comprises a body shell, a mounting shell disposed on a first side of the body shell, a draft tube disposed on a second side of the body shell, and a limit shell disposed at a first end of the body shell;

9. The exhalation valve of claim 8, wherein the valve body comprises a rear body and a front body;

10. The exhalation valve of claim 9, wherein the mounting structure comprises a connection plate and a mounting post;

11. The exhalation valve of claim 9, further comprising a flow sensor air lock disposed between the front body and the rear body.

12. The exhalation valve of claim 1, further comprising a rotary twist cap that fits over an air intake end of the valve body and interfaces with the housing.

13. The exhalation valve of claim 2, wherein the driver is a voice coil motor.

14. A ventilator comprising an exhalation valve as claimed in any one of claims 1 to 13.