CN114376884A

CN114376884A - Air pressure therapeutic instrument and one-way pressure reducing valve

Info

Publication number: CN114376884A
Application number: CN202210099373.3A
Authority: CN
Inventors: 邢悦泉
Original assignee: Beijing Longmafutu Technology Co ltd
Current assignee: Beijing Longmafutu Technology Co ltd
Priority date: 2021-07-02
Filing date: 2022-01-27
Publication date: 2022-04-22

Abstract

The invention discloses a one-way pressure reducing valve which comprises a valve body, a plunger and an exhaust diaphragm, wherein when the one-way pressure reducing valve works, when gas flows from a gas inlet to a gas outlet, the exhaust diaphragm blocks a second communication port by gas pressure, the gas pushes the plunger to flow to the gas outlet through a first communication port, when the gas on one side of the gas inlet cannot overcome the acting force of an elastic piece, the gas stops flowing to one side of the gas outlet, and the gas pressure value on one side of the gas inlet is lower than that on one side of the gas outlet. The invention also provides an air pressure therapeutic apparatus comprising the one-way pressure reducing valve, which comprises a limb pressure sleeve, wherein the limb pressure sleeve comprises a plurality of groups of pressure cavities which are arranged in parallel and can be connected with a vent pipe; utilize above-mentioned one-way relief pressure valve, along far-heart end to the direction of nearly heart end, realized that the pressure of a plurality of minute chamber of pressure chamber reduces gradually, combines the pressure of controlling a plurality of groups pressure chamber, has realized that the pressure of a plurality of groups cavity reduces gradually, reduces host computer use cost.

Description

Air pressure therapeutic instrument and one-way pressure reducing valve

Technical Field

The invention relates to the technical field of medical equipment and peripheral supporting facilities thereof, in particular to an air pressure therapeutic instrument and a one-way pressure reducing valve.

Background

Intermittent sequential compression therapy (IPC) is a clinical condition in which periodic pressure is applied to a limb to promote blood circulation and accelerate interstitial fluid reflux, thereby relieving edema, pain, soreness, heaviness of the limb and intermittent claudication caused by venous edema of the limb and arterial ischemia of the lower limb.

In the prior art, an air pressure therapeutic apparatus is mostly adopted to carry out pressurization therapy. The air pressure therapeutic instrument is a medical instrument which is controlled by an embedded single chip system, controls air with certain pressure output by an air pump by an electromagnetic valve, and sequentially fills a pressure leg sleeve sleeved outside the limb body of a patient according to a certain operation mode to perform physical therapy on the patient. Because parameters such as pressure, sequence, time and the like of inflation can be set by adopting the single chip microcomputer, multiple treatment modes can be combined for treating different types of patients. Has obvious curative effect on edema, blood circulation disorder and other diseases. The air pressure therapeutic apparatus adopts an embedded single chip microcomputer as a system core, receives operation through a human-computer interface, controls an air pump to output air with certain pressure, and distributes the air into a pressure leg sleeve through an electromagnetic valve. The pressure leg sleeve for wrapping the limb and the control host machine for inflation form an inflation and deflation system, and the pulsating blood flow is generated through the circulatory system of the limb through the mechanical action of periodic pressurization and depressurization, so that the blood circulation of the limb is promoted.

The part of the therapeutic apparatus which acts on the patient is one or a pair of limb sleeves with one or a plurality of independent air bags, and the working part is composed of an air pump controlled by an embedded single chip microcomputer, an electromagnetic valve group and a human-computer interface. When the operator sets the working time, pressure and other parameters of the product through the human-computer interface, the embedded system controls the pressure leg sleeve to work according to the set parameters. In the working process, the aim of improving the body fluid circulation state of the limb of the patient in a physical mode is fulfilled by applying different pressures and sequences to the limb of the patient for a certain time.

The air pressure therapeutic apparatus mainly comprises a therapeutic apparatus host, a vent pipe and a limb pressure sleeve, wherein the limb pressure sleeve is divided into a plurality of chambers, receives air with certain pressure output by the host, and expands to form certain pressure on the limb of a patient. Taking the pressure leg sleeve as an example, when the first chamber is inflated to the preset pressure, the host machine controls the next chamber to be inflated according to the preset sequence, and each chamber is inflated, expanded and deflated successively. The accumulated tissue fluid can be pushed back into the blood circulation according to the gradual inflation and deflation from the far-end to the near-end, so as to promote the venous blood backflow, help to prevent deep venous thrombosis and eliminate limb venous edema; according to the reverse process, the traditional Chinese medicine composition is beneficial to improving limb ischemic diseases and treating lower limb arterial ischemic diseases, and simultaneously promotes limb blood circulation and relieves various symptoms caused by the limb ischemic diseases.

The limb pressure sleeve is an important functional component for realizing the air pressure therapeutic instrument, and in the prior art, a host has a plurality of output channels, and the sleeve has a plurality of chambers which are in one-to-one correspondence. In practical application, because the pressure of the chamber near the center end of two adjacent chambers is usually slightly lower than that of the chamber at the far end of the two adjacent chambers, the number of the chambers needs to be increased to bring larger pressing density, which is beneficial to the function of the product, but as the number of the chambers is increased, the number of the air pipes is increased, the number of the output chambers needs to be increased by increasing the number of the control solenoid valves in the host, and accordingly, the use cost of the host is increased; if the number of the chambers is increased only in a parallel connection mode, but the pressure between the increased adjacent chambers is the same, the treatment effect is not improved, and therefore, the number of the chambers of the existing limb pressure sleeve is limited by the line connection, and the treatment effect of the treatment instrument is reduced.

Therefore, how to change the current situation that the air therapeutic apparatus has poor therapeutic effect due to the limited pipeline connection in the prior art becomes a problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide an air pressure therapeutic apparatus and a one-way pressure reducing valve, which are used for solving the problems in the prior art, enhancing the therapeutic effect of the air pressure therapeutic apparatus and reducing the use cost of the air pressure therapeutic apparatus.

In order to achieve the purpose, the invention provides the following scheme: the present invention provides a one-way pressure reducing valve, comprising:

the valve body is provided with an air inlet, an air outlet, a first communication port and a second communication port, and the air inlet can be communicated with the air outlet through the first communication port or the second communication port;

the plunger is connected with the valve body in a sliding mode and can seal the first communication port, an elastic piece is arranged between the plunger and the valve body, and the plunger is arranged on one side, close to the air outlet, of the first communication port;

the exhaust diaphragm can block the second communicating opening, the exhaust diaphragm is made of flexible materials, and the exhaust diaphragm is arranged on one side, close to the air inlet, of the second communicating opening.

Preferably, a sealing element is provided between the plunger and the first communication port.

Preferably, the plunger comprises a head part and a rod part which are connected, the rod part is connected with the valve body in a sliding mode, and the head part can seal the first communication port.

Preferably, the head is a round table-shaped structure, the larger end of the diameter of the head is connected with the rod part, the larger end of the diameter of the head is larger than the diameter of the first communication port, and the smaller end of the diameter of the head is smaller than the diameter of the first communication port.

Preferably, the elastic member is a spring, and the elastic member is sleeved outside the rod part.

Preferably, the exhaust diaphragm includes connecting portion and diaphragm portion that link to each other, connecting portion with the valve body can be dismantled and be connected, the diameter of diaphragm portion is than the diameter of connecting portion is big, diaphragm portion can the shutoff the second intercommunication mouth.

Preferably, the valve body is provided with a positioning groove capable of accommodating the diaphragm portion, the positioning groove is communicated with the second communication port, one end of the positioning groove communicated with the second communication port is an arc surface, and the arc surface is arranged on one surface, facing the second communication port, of the diaphragm portion.

Preferably, the valve body includes gas outlet casing, middle casing and the air inlet casing that links to each other in order, the gas outlet casing with the air inlet casing respectively with the connection can be dismantled to middle casing, the gas outlet set up in on the gas outlet casing, the air inlet set up in on the air inlet casing, first intercommunication mouth with the second intercommunication mouth all set up in on the middle casing, the plunger can slide with the gas outlet casing links to each other, the exhaust diaphragm with the connection can be dismantled to the air inlet casing.

Preferably, the axis of the air inlet and the axis of the air outlet are both located between the axis of the plunger and the axis of the exhaust diaphragm.

The invention also provides an air pressure therapeutic instrument, which comprises the one-way pressure reducing valve and comprises a limb pressure sleeve, wherein the limb pressure sleeve comprises a plurality of groups of pressure cavities which are arranged in parallel and can be connected with the vent pipe;

the pressure cavity comprises N +1 sub-cavities, the 1 st sub-cavity is communicated with the vent pipe by utilizing a 1 st branch, the number of the sub-cavities is consistent with that of the branches and corresponds to the sub-cavities one by one, the N +1 st sub-cavity is communicated with the Nth sub-cavity by utilizing a N +1 st branch, and the N +1 st sub-cavity is provided with the one-way pressure reducing valve between the sub-cavities, wherein N is more than or equal to 1.

Compared with the prior art, the invention has the following technical effects: the one-way pressure reducing valve comprises a valve body, a plunger and an exhaust membrane, wherein the valve body is provided with an air inlet, an air outlet, a first communicating port and a second communicating port, and the air inlet can be communicated with the air outlet through the first communicating port or the second communicating port; the plunger can be connected with the valve body in a sliding mode, the plunger can block the first communication port, an elastic piece is arranged between the plunger and the valve body, and the plunger is arranged on one side, close to the air outlet, of the first communication port; the exhaust diaphragm can shutoff second intercommunication mouth, and the exhaust diaphragm is made by flexible material, and the exhaust diaphragm sets up in the one side that the second intercommunication mouth is close to the air inlet.

When the one-way pressure reducing valve works, when gas flows from the gas inlet to the gas outlet, the exhaust diaphragm is blocked by the gas pressure, the gas overcomes the acting force of the elastic piece to push the plunger piston to flow to the gas outlet through the first communicating port, when the gas on one side of the gas inlet cannot overcome the acting force of the elastic piece, the gas stops flowing to one side of the gas outlet, and the gas pressure value on one side of the gas inlet is higher than that on one side of the gas outlet; when gas needs to be discharged, the gas flows to the gas inlet from the gas outlet, the gas pushes the exhaust membrane to be discharged from the gas inlet through the second communicating port, and the energy consumption of the gas pushing the exhaust membrane is low, so that the gas is guaranteed to be discharged smoothly. The one-way pressure reducing valve is applied to an air pressure therapeutic apparatus, a cavity can be divided into a plurality of small cavities, the purpose that the pressure intensity of a cavity close to the heart end is slightly lower than that of the cavity far away from the heart end can be achieved by connecting the small cavities in series step by step through the one-way pressure reducing valve, the distribution density of the cavities in a limb pressure sleeve can be effectively improved, a control electromagnetic valve does not need to be added, and the problems in the prior art are solved.

The invention also provides an air pressure therapeutic apparatus comprising the one-way pressure reducing valve, which comprises a limb pressure sleeve, wherein the limb pressure sleeve comprises a plurality of groups of pressure cavities which are arranged in parallel and can be connected with a vent pipe; the pressure cavity comprises N +1 sub-cavities, the 1 st sub-cavity is communicated with the vent pipe by using the 1 st branch, the number of the sub-cavities is consistent with that of the branches and corresponds to the number of the sub-cavities one by one, the N +1 st sub-cavity is communicated with the Nth sub-cavity by using the N +1 th branch, and a one-way pressure reducing valve is arranged between the N +1 th sub-cavity and the Nth sub-cavity, wherein N is more than or equal to 1.

According to the air pressure therapeutic apparatus, the unidirectional pressure reducing valve is utilized, the pressure of a plurality of sub-chambers of the pressure chamber is gradually reduced along the direction from the far center end to the near center end, the pressure of a plurality of groups of pressure chambers is controlled in a combined manner, the pressure of the plurality of groups of sub-chambers is gradually reduced, and the therapeutic effect of the therapeutic apparatus is enhanced on the premise of reducing the use cost of a host machine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of a one-way pressure relief valve according to the present invention;

FIG. 2 is an enlarged schematic view of a partial structure of the relief valve of the present invention;

FIG. 3 is a schematic diagram of the operation of the air pressure treatment apparatus of the present invention;

the pressure reducing valve comprises a one-way pressure reducing valve 100a, a valve body 1, an air inlet 101, an air outlet 102, a first communication port 103, a second communication port 104, a positioning groove 105, an air outlet shell 106, an intermediate shell 107, an air inlet shell 108, a plunger 2, an elastic piece 201, a sealing element 202, a head 203, a rod 204, an exhaust membrane 3, a connecting portion 301, a membrane portion 302, a main machine 200a and a sub-chamber 300 a.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-3, fig. 1 is a schematic structural diagram of a one-way pressure reducing valve of the present invention, fig. 2 is an enlarged schematic structural diagram of a portion of the one-way pressure reducing valve of the present invention, and fig. 3 is a schematic working diagram of an air pressure therapeutic apparatus of the present invention.

The present invention provides a one-way pressure reducing valve 100a, including:

a valve body 1, the valve body 1 having an air inlet 101, an air outlet 102, a first communication port 103, and a second communication port 104, the air inlet 101 being communicable with the air outlet 102 via the first communication port 103 or the second communication port 104;

the plunger 2, the plunger 2 can be connected with the valve body 1 in a sliding way, the plunger 2 can block the first communication port 103, an elastic piece 201 is arranged between the plunger 2 and the valve body 1, and the plunger 2 is arranged on one side of the first communication port 103 close to the air outlet 102;

the exhaust diaphragm 3, the exhaust diaphragm 3 can be dismantled with valve body 1 and be connected, and the exhaust diaphragm 3 can shutoff second intercommunication mouth 104, and the exhaust diaphragm 3 is made by flexible material, and the exhaust diaphragm 3 sets up in the one side that second intercommunication mouth 104 is close to air inlet 101.

When the one-way pressure reducing valve 100a works, when gas flows from the gas inlet 101 to the gas outlet 102, the gas discharging membrane 3 is blocked by the gas pressure of the second communicating port 104, the gas overcomes the acting force of the elastic piece 201, the plunger 2 is pushed, the plunger 2 is far away from the first communicating port 103, so that the first communicating port 103 is opened, the gas flows to the gas outlet 102 through the first communicating port 103, when the gas on one side of the gas inlet 101 cannot overcome the acting force of the elastic piece 201, the gas stops flowing to one side of the gas outlet 102, and the gas pressure value on one side of the gas inlet 101 is higher than that on one side of the gas outlet 102; when gas needs to be discharged, the gas flows from the gas outlet 102 to the gas inlet 101, the gas pushes the gas discharge membrane 3, the gas discharge membrane 3 opens the second communication port 104, the gas is discharged from the gas inlet 101 through the second communication port 104, and the gas is discharged smoothly due to the fact that the energy consumption for pushing the gas discharge membrane 3 is small.

In order to avoid gas leakage between the plunger 2 and the first communication port 103, a sealing member 202 is provided between the plunger 2 and the first communication port 103, and the airtightness of the relief valve 100a is enhanced.

Specifically, the plunger 2 includes a head portion 203 and a rod portion 204 connected to each other, the rod portion 204 is slidably connected to the valve body 1, the rod portion 204 can drive the head portion 203 to reciprocate, the rod portion 204 also serves as a guide for the head portion 203, the head portion 203 can block the first communication port 103, when gas flows from the gas outlet 102 to the gas inlet 101, under the action of gas pressure and the elastic member 201 restoring deformation, the head portion 203 is pressed at the first communication port 103 to block the first communication port 103, and the sealing element 202 is disposed at the head portion 203 to ensure the sealing performance at the first communication port 103.

In this embodiment, the head portion 203 is a circular truncated cone-shaped structure, the larger diameter end of the head portion 203 is connected to the rod portion 204, the larger diameter end of the head portion 203 is larger than the diameter of the first communication port 103, the smaller diameter end of the head portion 203 is smaller than the diameter of the first communication port 103, the smaller diameter end of the head portion 203 can extend into the first communication port 103, the head portion 203 is circular truncated cone-shaped, and the smaller diameter end of the head portion 203 can extend into the first communication port 103, so that the first communication port 103 can be conveniently plugged.

In other embodiments of the present invention, the elastic member 201 is a spring, the elastic member 201 is sleeved outside the rod portion 204, the installation is convenient, the elastic member 201 determines the pressure difference between the air inlet 101 side and the air outlet 102 side, and the pressure difference between the adjacent sub-chambers 300a can be adjusted by replacing the elastic member 201.

More specifically, the exhaust diaphragm 3 includes connecting portion 301 and diaphragm portion 302 that link to each other, connecting portion 301 can be dismantled with valve body 1 and be connected, be convenient for dismouting change exhaust diaphragm 3, the diameter of diaphragm portion 302 is greater than the diameter of connecting portion 301, diaphragm portion 302 can shutoff second intercommunication mouth 104, diaphragm portion 302 is made by flexible material, and the diameter of diaphragm portion 302 is greater than the diameter of second intercommunication mouth 104, when gaseous by the side of air inlet 101 one side, under the gas pressure effect, diaphragm portion 302 hugs closely second intercommunication mouth 104, when gaseous by the side of air outlet 102 one side in, gaseous can easily promote diaphragm portion 302, reach air inlet 101 one side via second intercommunication mouth 104.

In addition, the valve body 1 is provided with a positioning groove 105 capable of accommodating the diaphragm portion 302, the positioning groove 105 is arranged on the side close to the air inlet 101, the positioning groove 105 is communicated with the second communication port 104, the diaphragm portion 302 is located in the positioning groove 105, dislocation of the diaphragm portion 302 under the action of air pressure is avoided, one end, communicated with the second communication port 104, of the positioning groove 105 is an arc surface, one surface, facing the second communication port 104, of the diaphragm portion 302 is provided with an arc surface, the arcs of the arc surfaces are not consistent, when air passes through the second communication port 104 from the air outlet 102 to reach the diaphragm portion 302, the abutting part area of the diaphragm portion 302 and the top of the positioning groove 105 is small, the air can easily push the diaphragm portion 302, energy consumption is low, the air can smoothly reach the air inlet 101, smooth discharge of the air in the device is facilitated, and detailed view is shown in fig. 2.

Further, valve body 1 is including the gas outlet casing 106 that links to each other in order, middle casing 107 and air inlet casing 108, gas outlet casing 106 and air inlet casing 108 can be dismantled with middle casing 107 respectively and be connected, gas outlet 102 sets up on gas outlet casing 106, air inlet 101 sets up on air inlet casing 108, first intercommunication mouth 103 and second intercommunication mouth 104 all set up on middle casing 107, plunger 2 can link to each other with gas outlet casing 106 with sliding, exhaust diaphragm 3 can be dismantled with air inlet casing 108 and be connected, valve body 1 is split type structure, the dismouting of being convenient for, make things convenient for clean maintenance and change spare part simultaneously, facilitate for operating personnel.

It should be noted that the axes of the gas inlet 101 and the gas outlet 102 are both located between the axis of the plunger 2 and the axis of the exhaust diaphragm 3, so as to shorten the gas flow path as much as possible, ensure smooth gas input and exhaust, and improve the reliability of the device.

Furthermore, the present invention also provides an air pressure therapeutic apparatus, comprising the above one-way pressure reducing valve 100a, which comprises a limb pressure sleeve, wherein the limb pressure sleeve comprises a plurality of groups of pressure chambers arranged in parallel, and the pressure chambers can be connected with a vent pipe;

the pressure cavity comprises N +1 sub-cavities 300a, the 1 st sub-cavity 300a is communicated with the vent pipe by using the 1 st branch, the number of the sub-cavities 300a is consistent with that of the branches and corresponds to the branches one by one, the N +1 th sub-cavity 300a is communicated with the Nth sub-cavity 300a by using the N +1 th branch, and a one-way pressure reducing valve 100a is arranged between the N +1 th sub-cavity 300a and the Nth sub-cavity 300a, wherein N is more than or equal to 1.

According to the air pressure therapeutic apparatus, the one-way pressure reducing valve 100a is utilized, the pressure of the plurality of sub-chambers 300a of the pressure cavity is gradually reduced along the direction from the far center end to the near center end, the pressure of the plurality of groups of pressure cavities is controlled in a combined manner, the pressure of the plurality of sub-chambers 300a is gradually reduced, the problem of limited pipeline connection is solved on the premise of reducing the use cost of the main machine 200a, and the therapeutic effect of the therapeutic apparatus is enhanced.

It should be noted that, although the application of the one-way pressure reducing valve 100a in the present invention is specifically described by taking an air pressure therapeutic apparatus as an example, the application field of the one-way pressure reducing valve 100a should not be limited to the air pressure therapeutic apparatus, nor to the medical apparatus field, and the one-way pressure reducing valve 100a can be applied to the application fields that the pressure is reduced when air is required to be supplied and the air is required to be rapidly released when air is discharged.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. A one-way pressure relief valve, comprising:

2. The one-way pressure relief valve of claim 1, wherein: a sealing element is arranged between the plunger and the first communication port.

3. The one-way pressure relief valve of claim 1, wherein: the plunger comprises a head part and a rod part which are connected, the rod part can be connected with the valve body in a sliding mode, and the head part can seal the first communication port.

4. The one-way pressure relief valve of claim 3, wherein: the head is round platform column structure, the great one end of diameter of head with pole portion links to each other, the diameter of the great one end of diameter of head is compare the diameter of first opening is big, the diameter of the less one end of diameter of head is compare the diameter of first opening is little.

5. The one-way pressure relief valve of claim 3, wherein: the elastic piece is a spring and is sleeved outside the rod part.

6. The one-way pressure relief valve of claim 1, wherein: the exhaust diaphragm comprises a connecting portion and a diaphragm portion which are connected, the connecting portion is detachably connected with the valve body, the diameter of the diaphragm portion is larger than that of the connecting portion, and the diaphragm portion can be plugged with the second communicating opening.

7. The one-way pressure relief valve of claim 6, wherein: the valve body is provided with a positioning groove capable of containing the diaphragm portion, the positioning groove is communicated with the second communication port, one end of the positioning groove communicated with the second communication port is an arc surface, and the arc surface is arranged on one surface, facing the second communication port, of the diaphragm portion.

8. The one-way pressure relief valve of claim 1, wherein: the valve body is including the gas outlet casing, middle casing and the air inlet casing that link to each other in order, the gas outlet casing with the air inlet casing respectively with middle casing can dismantle the connection, the gas outlet set up in on the gas outlet casing, the air inlet set up in on the air inlet casing, first intercommunication mouth with the second intercommunication mouth all set up in on the middle casing, the plunger can slide with the gas outlet casing links to each other, the exhaust diaphragm with the air inlet casing can be dismantled the connection.

9. The one-way pressure relief valve of claim 8, wherein: the axis of the air inlet and the axis of the air outlet are both located between the axis of the plunger and the axis of the exhaust diaphragm.

10. An air pressure treatment apparatus comprising the one-way pressure reducing valve according to any one of claims 1 to 9, wherein: the limb pressure sleeve comprises a plurality of groups of pressure cavities which are arranged in parallel, and the pressure cavities can be connected with a vent pipe;