CN113693665B

CN113693665B - Air valve for inflating device

Info

Publication number: CN113693665B
Application number: CN202110913462.2A
Authority: CN
Inventors: 张颖
Original assignee: AUCKLAND MEDICAL POLYMER (TIANJIN) CO LTD
Current assignee: Auckland Medical Technology Sichuan Co ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-08-02
Anticipated expiration: 2041-08-10
Also published as: CN113693665A

Abstract

The invention relates to the field of medical instruments, and provides a gas valve for an inflation device, which comprises: the valve body comprises an upper membrane, polymer gel and a lower membrane, the upper membrane and the lower membrane are sealed along the circumferential direction to form a closed cavity, and the polymer gel is arranged in the closed cavity. The air valve for the inflation device further comprises an inflation limiting assembly, wherein the inflation limiting assembly is fixedly arranged below the valve body and comprises a circular base plate and an annular side wall fixedly arranged on the circular base plate, and only a plurality of air outlets are uniformly formed in the annular side wall. The invention has the advantages that: the novel soft sealing air valve which is simple in structure and good in sealing effect is designed by adopting the existing soft medical material, and can replace various inflation valve bodies with complex structures.

Description

Air valve for inflating device

Technical Field

The invention relates to the field of medical instruments, in particular to a gas valve for an inflating device of a medical instrument.

Background

In the orthopedic surgery, when the middle and far-end limbs of the four limbs are operated, the blood loss of a patient is reduced for the clarity of the operation visual field sometimes, the operation time is shortened for improving the operation efficiency, and the steps of blood dispelling and hemostasis are often needed.

But the rubber material of above-mentioned blood-dispelling area and supporting inflation valve material are all harder, reinjure skin easily when driving blood, and use after killing repeatedly and increaseed medical personnel's working cost and if the risk that disappears and kill and not completely have the secondary infection, in order to reduce above-mentioned problem, need design a disposable softer blood-dispelling area and the inflation valve that matches with it, can conveniently accomplish blood-dispelling, stanch, clean health when saving medical personnel working cost reduces the risk of secondary infection.

However, in the process of designing the tourniquet, the inflating valve which has strong tightness, is convenient to use and can be soft without damaging the skin is a difficult problem in the manufacturing process.

Disclosure of Invention

In order to solve the problem of inflation of a cavity formed by a soft blood-dispelling belt and other soft materials, an inflation valve which is strong in tightness, soft and free of skin damage is needed.

A gas valve for an inflator device, comprising: the valve body comprises an upper membrane, polymer gel and a lower membrane, the upper membrane and the lower membrane are sealed along the circumferential direction to form a closed cavity, and the polymer gel is arranged in the closed cavity.

Preferably, the air valve for the inflation device further comprises an inflation limiting assembly, the inflation limiting assembly is fixedly arranged below the valve body and comprises a circular base plate and an annular side wall fixedly arranged on the circular base plate, and only a plurality of air outlets are uniformly formed in the annular side wall.

Preferably, the middle part of the circular chassis is of a double-layer structure, a cavity is formed inside the circular chassis, and a plurality of through holes are formed in the upper plate above the cavity.

Preferably, a plurality of limiting columns are arranged between the upper and lower plates at the center of the circular chassis.

Preferably, the center of the upper membrane is provided with a positioning point or a positioning hole.

Preferably, the inflation limiting component is made of polymer gel materials.

Preferably, the upper membrane sheet and the lower membrane sheet are TPU membranes, PVC membranes, PE membranes, PA membranes or PP membranes.

The invention has the advantages that: the novel soft sealing air valve is designed by adopting the existing soft medical material, and the high-molecular gel sealing structure is adopted to replace the traditional rubber type air valve, so that the processing difficulty is small, the processing procedures are few, and the assembly is convenient; meanwhile, the valve body is soft in structure and can be matched with a soft inflating main body for use, and particularly matched with a disposable TPU (thermoplastic polyurethane) material blood-dispelling sleeve for use, so that the environment-friendly blood-dispelling sleeve which is thin in inflating main body, small in skin damage, low in cost and recyclable and degradable is formed.

In addition, the air valve provided by the invention is provided with the polymer gel between the upper membrane and the lower membrane, is fluid-tight, has a good sealing effect, is simple and novel in structure, and can replace various inflation valve bodies with complex structures.

Drawings

FIG. 1 is a schematic structural view of an embodiment 1 of the gas valve for an inflator according to the present invention;

FIG. 2 is a sectional view taken along line A-A of inventive example 1;

FIG. 3 is a schematic structural view of an embodiment 2 of the gas valve for an inflator according to the present invention;

FIG. 4 is a sectional view taken along line B-B of inventive example 2;

FIG. 5 is an enlarged view of a portion of the invention at C of FIG. 4;

fig. 6 is a diagram of a state of use of the gas valve for an inflator according to the present invention.

1. A valve body; 2. an inflation limiting component; 11. an upper diaphragm; 12. polymer gel; 13. a lower diaphragm; 21. A circular chassis; 22. an annular sidewall; 23. an air outlet; 211. a cavity; 212. a through hole; 213. a limiting column.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention.

It should be noted that the installation methods and technical terms mentioned in the invention are technical terms that are already clearly known in the technical field, and therefore, the explanation is not repeated. Moreover, the same reference numerals are used for the same components, which do not affect and should not constitute an exact understanding of the technical solutions for a person skilled in the art.

Example 1

As shown in fig. 1 and 2, an air valve for an inflator comprises a valve body 1, wherein the valve body 1 is composed of an upper membrane 11 made of TPU, polymer gel 12 and a lower membrane 13 made of TPU, the specific combination mode is that the lower membrane 13, the polymer gel 12 and the upper membrane 11 are placed from bottom to top in sequence, then the upper membrane 11 and the lower membrane 13 are sealed in a pressing or bonding mode, and the sealed polymer gel 12 is placed in a sealed cavity formed by the upper membrane 11 and the lower membrane 13 in a sealed mode. In order to facilitate the air needle punching in use, the center of the upper membrane 11 is provided with a positioning point or hole.

When the inflatable air valve is used specifically, the air valve is connected with a main body to be inflated in a sealing mode, the inflatable air needle is inserted into the positioning point of the air valve until the lower membrane of the air valve penetrates through, then the inflatable main body is inflated, the air needle is pulled out after inflation is completed, and due to the fact that polymer gel in the air valve has fluidity, deformation is generated, and gas overflow can be effectively prevented.

The main body to be inflated may be a medical blood-dispelling cover or other civil air-dispelling equipment, such as a basketball, a football, etc., as shown in fig. 6, which is a usage state diagram of the air valve in this embodiment applied to the medical blood-dispelling cover.

Example 2

As shown in fig. 3, an air valve for an inflator comprises a valve body 1 and an inflation limiting component 2, wherein the valve body 1 comprises an upper membrane 11, polymer gel 12 and a lower membrane 13, the specific combination mode is that the lower membrane 13, the polymer gel 12 and the upper membrane 11 are sequentially placed from bottom to top, then the upper membrane 11 and the lower membrane 13 are sealed in a pressing or bonding mode, and the sealed polymer gel 12 is placed in a sealed cavity formed by the upper membrane 11 and the lower membrane 13 in a sealed mode. The upper and lower film sheets may be thermoplastic polyurethane (i.e. TPU) or polyvinyl chloride (i.e. PVC) or polyethylene (i.e. PE) or polyamide (i.e. PA) or polypropylene (i.e. PP) films of different thicknesses or other elastic films or thermoplastic elastic films of similar nature.

The inflation limiting component 2 is fixedly arranged below the valve body 1 and comprises a circular base plate 21 and an annular side wall 22 fixedly arranged on the circular base plate 21, and only a plurality of air outlets 23 are uniformly formed in the annular side wall 22.

During the specific use, the operation mode is with embodiment 1, and the difference is that this embodiment has increased and has aerifyd spacing subassembly 2, can prevent to aerify gas needle power excessively when aerifing, can cause the harm to the main part of waiting to aerify of valve body 1 below after passing valve body 1. And, when the main part of waiting to aerify is medical bloodletting sleeve, aerify spacing subassembly 2 preferred adoption and have the polymer gel integrated into one piece of certain hardness.

Example 3

As shown in fig. 3 to 5, an air valve for an inflator comprises a valve body 1 and an inflation limiting component 2, wherein the valve body 1 comprises an upper membrane 11, polymer gel 12 and a lower membrane 13, the specific combination mode is that the lower membrane 13, the polymer gel 12 and the upper membrane 11 are sequentially placed from bottom to top, then the upper membrane 11 and the lower membrane 13 are sealed in a pressing or bonding mode, and the sealed polymer gel 12 is placed in a sealed cavity formed by the upper membrane 11 and the lower membrane 13 in a sealing mode. The upper and lower film sheets may be thermoplastic polyurethane (i.e. TPU) or polyvinyl chloride (i.e. PVC) or polyethylene (i.e. PE) or polyamide (i.e. PA) or polypropylene (i.e. PP) films of different thicknesses or other elastic films or thermoplastic elastic films of similar nature.

The middle part of the circular chassis 21 (preferably, the circle center part is outward circular radiation, and the radius from the maximum radiation to 1/2) is of a double-layer structure, a cavity 211 is formed inside the double-layer structure, and a plurality of through holes 212 are formed in an upper plate above the cavity 211.

Meanwhile, in order to prevent the long standing time, the double-layer structure in the middle of the circular chassis 21 is deformed, and a plurality of limiting columns 213 are arranged between the upper and lower plates at the center of the circular chassis.

Preferably, when the main body to be inflated is the medical blood-dispelling cover, the inflation limiting component 2 is preferably integrally formed by polymer gel with certain hardness.

During the specific use, the operation is the same as embodiment 2, the difference is that this embodiment has made corresponding adjustment to the structure of aerifing spacing subassembly 2, after aerifing the gas needle and passing valve body 1, when the gas needle gas outlet is arranged in the cavity that forms between valve body 1 and the spacing subassembly 2 of aerifing, can normally aerify, if the strength is excessive when interlude aerifys the gas needle, the gas port top is when the upper surface of aerifing spacing subassembly 2 can't give vent to anger, can further insert the cavity 211 that gets into circular chassis 21 and aerify in the circular chassis 21 upper strata of aerifing spacing subassembly 2 through, have dual fail-safe, be applicable to the gas needle gas outlet and be multiple application scene of plane, inclined plane or side.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any minor modifications, equivalent replacements and improvements made to the above embodiment according to the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. An air valve for a disposable TPU material exsanguination sleeve, comprising: the valve body (1), the valve body (1) includes an upper diaphragm (11), a polymer gel (12) and a lower diaphragm (13), the upper diaphragm (11) and the lower diaphragm (13) are sealed along the circumferential direction to form a closed cavity, and the polymer gel (12) is arranged in the closed cavity; the upper membrane (11) and the lower membrane (13) are TPU membranes, PVC membranes, PE membranes, PA membranes or PP membranes;

the gas-filled valve also comprises an inflation limiting assembly (2), wherein the inflation limiting assembly (2) is fixedly arranged below the valve body and comprises a circular chassis (21) and an annular side wall (22) fixedly arranged on the circular chassis, and a plurality of gas outlets (23) are uniformly formed in the annular side wall;

the middle part of the round chassis (21) is of a double-layer structure, a cavity (211) is formed inside the round chassis, and a plurality of through holes (212) are formed in the upper plate above the cavity (211).

2. An air valve for a disposable TPU blood-drive sheath according to claim 1, characterized in that a plurality of limiting columns (213) are arranged between the upper and lower plates at the center of the circular base plate.

3. An air valve for a disposable TPU blood-drive sleeve according to claim 1, characterized in that the center of the upper membrane (11) is provided with a positioning point or a positioning hole.

4. An air valve for a disposable TPU blood drive set according to claim 1, characterized in that the inflation limiting component (2) is made of polymer gel.