WO2016206450A1

WO2016206450A1 - Active electrically-controlled exhalation valve

Info

Publication number: WO2016206450A1
Application number: PCT/CN2016/079337
Authority: WO
Inventors: 任福立
Original assignee: 北京谊安医疗系统股份有限公司
Priority date: 2015-06-26
Filing date: 2016-04-15
Publication date: 2016-12-29
Also published as: CN106267511A

Abstract

An active electrically-controlled exhalation valve. The exhalation valve comprises a valve port (1), a shielding member, an electromagnetic member and a magnet (10). The shielding member is located at the valve port (1) and connected with the electromagnetic member; the electromagnetic member comprises a coil (8), and the electromagnetic member actuates the shielding member when the coil (8) is energized or de-energized, so that the valve port (1) is opened or closed. The exhalation valve may also comprise a valve port (1), a shielding member, a valve body plate (5) and an electromagnetic member. The shielding member is located at the valve port (1) and connected with the electromagnetic member; the electromagnetic member is moved away from or close to the valve port (1) when the coil (8) is energized, so that the valve port (1) is opened or closed. The exhalation valve can be automatically opened when a patient needs to exhale after inhaling, in order to reduce the resistance to exhalation of the patient and the work of breath of the patient and thereby alleviate the disease.

Description

Active electronically controlled exhalation valve

Technical field

The invention belongs to the field of ventilator instruments, and in particular relates to an active electronically controlled exhalation valve.

Background technique

The ventilator is an important device for clinical rescue, respiratory failure, and respiratory support after anesthesia and surgery. It provides mechanical breathing support to improve ventilation, correct hypoxia, and prevent carbon dioxide accumulation, and to rescue Provides strong life support to restore the health of the patient's body through the respiratory failure. The exhalation valve is a key component in the ventilator's pneumatic control. It is not only an indispensable component in the process of snoring, but also can maintain positive end-expiratory pressure to treat acute respiratory distress syndrome and overcome endogenous PEEPi. and many more. The electronically controlled exhalation valve of the existing ventilator only controls the valve to be closed when inhaling, and the power is turned off during exhalation, and the valve is opened by the pressure generated by the gas exhaled by the patient, which increases the patient's breathing work. And make the already weak patients worse, which is not conducive to the relief of the disease and offline.

Summary of the invention

The invention provides an active electronically controlled exhalation valve for the defect that the existing ventilator must rely on the gas exhaled by the patient to open the exhalation valve, and the exhalation valve of the invention can realize the exhalation at the end of the patient's inhalation. When the exhalation valve is automatically opened, the resistance of the patient's exhaled gas is reduced, and the patient's breathing work is less.

The exhalation valve provided by the present invention comprises a valve port, a shielding member, an electromagnetic member and a magnet, the shielding member is located at the valve port, the shielding member is connected with the electromagnetic component; the electromagnetic component comprises a coil, and the coil is energized or broken. The electromagnetic component drives the shielding member to open or close the valve port.

Specifically, when the coil is energized, the energizing coil moves in the magnetic field to move the electromagnetic member away from the magnet, so that the shielding member closes the valve port; when the coil is de-energized, the force disappears, and the elastic member or other force is used. The electromagnetic component is reset, thereby opening the valve port of the exhalation valve;

When the coil is energized, the energized coil moves in the magnetic field to bring the electromagnetic member close to the magnet, so that the shielding member closes the valve port; when the coil is de-energized, the force disappears, and the electromagnetic member is reset by the elastic member or other force to open The valve port of the exhalation valve.

Preferably, when the coil is energized, the coil drives the electromagnetic member to move away from or toward the magnet, thereby opening and closing the valve port of the exhalation valve.

Preferably, the electronically controlled exhalation valve further comprises an elastic member, and the elastic member is pressed when the coil is energized Shrink or stretch.

Preferably, the elastic member is disposed between the valve body plate and the electromagnetic member.

Preferably, the elastic member is a spring.

Preferably, the electromagnetic component comprises a thimble and a top core, and the coil is wound on the top core, and the thimble is connected to the shielding member.

Preferably, the exhalation valve further comprises a guiding sleeve, one end of the thimble is connected with the shielding member, and the other end is inserted into the guiding sleeve.

Preferably, the shielding member comprises a diaphragm and a diaphragm blocking piece, and the diaphragm blocking piece is connected with the electromagnetic member.

Preferably, the diaphragm is a silicone diaphragm, and the diaphragm blank is a metal thin plate.

The present invention also provides another active electronically controlled exhalation valve, the specific design of which differs from the foregoing.

The exhalation valve of the solution comprises a valve port, a shielding member, a valve body plate, a coil and an electromagnetic component, the shielding member is located at the valve port, the shielding member is connected with the electromagnetic component; and the electromagnetic component is moved away when the coil is energized or Close to the valve port and open or close the valve port.

Preferably, the electromagnetic component comprises a thimble, the thimble is connected with a shielding member, and the electromagnetic component is provided with a magnet or a soft magnetic material.

Preferably, the electronically controlled exhalation valve further includes an elastic member that is compressed or stretched when the coil is energized.

Preferably, the elastic member is a spring.

In the above structure, when a magnet is disposed on the electromagnetic member, the magnetic field generated when the coil is energized causes the magnet to move, that is, the magnet is moved away from or close to the valve port, and the valve port is opened or closed. In order to enhance the magnetic field, a soft magnetic material may be provided in the aforementioned coil.

The device of the invention can realize the automatic opening of the exhalation valve when the patient needs to exhale at the end of inhalation, to reduce the resistance of the patient exhaled gas, and less the patient's breathing work, which helps to alleviate the condition and improve the cure rate.

DRAWINGS

Figure 1. State diagram of the exhalation valve when the shutter is closed;

Figure 2, state diagram when the exhalation valve is open;

Drawing identification:

1. Valve port 2. Diaphragm 3. Diaphragm block 4. Thimble 5. Valve body plate 6. Spring 7. Top core 8. Coil 9. Guide sleeve 10. Magnet

detailed description

The following are preferred embodiments of the invention, which are merely illustrative of the invention and are not limiting.

Referring to FIG. 1 and FIG. 2, the exhalation valve provided by the present invention comprises a valve port 1, a shielding member, a valve body plate, an electromagnetic member and a magnet 10, the shielding member comprising a diaphragm 2 and a diaphragm blocking piece 3, the shielding member The piece is connected to an electromagnetic member comprising a top core 7 and a thimble 4, and the top core 7 is provided with a coil 8. The diaphragm 2 is a silicone diaphragm, and the diaphragm blank 3 is a thin metal plate.

The exhalation valve further includes a guiding sleeve, one end of the thimble 4 is connected to the shielding member, and the other end extends into the guiding sleeve 9, and the coil is wound around the top core 7. The thimble 3 and the top core 7 are fixed together. The ejector pin 4 and the top core 7 and the coil 8 can be simultaneously guided by the valve body plate 5 and the guide sleeve 9 to move in the left-right direction of the drawing. The exhalation valve also includes a spring 6 disposed between the top core and the valve body plate.

According to Lorentz's law, the energized coil can generate a force in the magnetic field. When the exhalation valve needs to be closed during the inhalation phase, the current in the specified direction is passed through the coil 8, and the energized coil acts on the magnetic field of the magnet 10. Next, a force is generated to move it to the left. When the force overcomes the force of the compression of the spring 6, the thimble 4 can be caused to act against the diaphragm flap 3 and drive the diaphragm 2 together to the left, and the mouth of the valve port 1 The end is sealed so that the gas supplied by the ventilator enters the patient's lungs. At the end of the inspiratory phase, when the patient needs to exhale, the electric power of the coil 8 is disconnected, and the ampere force generated by the coil 8 disappears, the force of the spring 6 is lost, thereby obtaining relaxation, and the left end is blocked by the valve body plate 5. Only the right end pusher ejector pin, the top core 7, and the coil 8 move to the right together, and actively open the valve port of the exhalation valve, without the patient's exhalation pushing the diaphragm 2, without resistance, smoothly exhausting, reducing The breathing function of a small patient can improve the comfort of the patient, help to alleviate the condition and improve the cure rate.

Obviously, when the coil is energized, the movement of the coil in the magnetic field drives the electromagnetic component to move to the breathing valve port, so that the shielding member closes the valve port and compresses the spring 6; when the coil is powered off, the corresponding electromagnetic force disappears, the spring 6 Revert to the original condition, thus opening the valve port of the exhalation valve. Of course, it is also possible here to design the current in the opposite direction of the coil so that the coil moves in different directions during exhalation and inhalation, so that the opening of the valve port is realized without the aid of the elastic member.

For the device, the coil may be disposed outside the electromagnet, and a magnet is disposed in the electromagnet. The magnet is subjected to a magnetic field force when the coil is energized, and it may also be configured to drive the shutter to open or close the valve port.

In order to enhance the magnetic field of the coil, a soft magnet can be set in a targeted manner. In the electromagnet, a separate magnet can be omitted, and a soft magnet can be provided, which can also open and close the valve port by energizing or not.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

An active electronically controlled exhalation valve, characterized in that the exhalation valve comprises a valve port, a shielding member, an electromagnetic member and a magnet, the shielding member is located at the valve port, and the shielding member is connected with the electromagnetic component; The electromagnetic component comprises a coil, and when the coil is energized or de-energized, the electromagnetic component drives the shielding member to open or close the valve opening.
The electronically controlled exhalation valve according to claim 1, wherein when the coil is energized, the coil drives the electromagnetic member to move away from or toward the magnet, thereby opening the valve opening of the exhalation valve and shut down.
The electrically controlled exhalation valve of claim 2 wherein said electronically controlled exhalation valve further comprises an elastic member that is compressed or stretched when said coil is energized.
The electrically controlled exhalation valve according to claim 3, wherein the elastic member is disposed between the valve body plate and the electromagnetic member.
The electrically controlled exhalation valve of claim 4 wherein said resilient member is a spring.
The electronically controlled exhalation valve according to claim 2 or 3, wherein the electromagnetic member comprises a thimble and a top core, and the coil is wound around the top core, and the thimble is connected to the shutter.
The electronically controlled exhalation valve according to claim 6, wherein the exhalation valve further comprises a guide sleeve, one end of the thimble being connected to the shutter and the other end extending into the guide sleeve.
The electrically controlled exhalation valve of claim 1 wherein said shield comprises a diaphragm and a diaphragm stop, said diaphragm stop being coupled to the electromagnetic member.
An active electronically controlled exhalation valve, characterized in that the exhalation valve comprises a valve port, a shielding member, a valve body plate and an electromagnetic component, the shielding member is located at the valve port, and the shielding member is connected with the electromagnetic component When the coil is energized, the electromagnetic component is moved away from or close to the valve port, thereby opening or closing the valve port.
The electrically controlled exhalation valve of claim 9 wherein said electrically controlled exhalation valve further comprises an elastic member that is compressed or stretched when said coil is energized.