Negative pressure device and negative pressure system

Abstract

This invention provides a negative pressure device and a negative pressure system. The negative pressure device includes a suction adapter assembly, a suction cup, and an umbrella valve. The suction adapter assembly is connected to a suction assembly, and the suction cup defines an internal space. The umbrella valve is disposed within the internal space of the suction cup. Using the negative pressure environment provided by the suction assembly, the umbrella valve can control the gas flow in one direction via the suction cup to maintain the internal negative pressure. This invention also provides a negative pressure system, which includes the aforementioned negative pressure device.

Claims

1. A negative pressure device adapted to selectively create a negative pressure environment via an intake component, the negative pressure device comprising: A suction adapter assembly, one side of which is used to connect to the suction assembly; a suction cup, one side of which is used to connect to the other side of the suction adapter assembly, and the suction cup defines an internal space; and an umbrella valve disposed in the internal space of the suction cup, wherein the umbrella valve controls a gas to form a unidirectional flow by means of the negative pressure environment selectively provided by the suction assembly.

2. The negative pressure device as claimed in claim 1 further includes a sealing component, wherein the sealing component is connected to one side of the suction cup after the negative pressure device forms the negative pressure environment via the suction component, replacing the suction adapter component.

3. The negative pressure device as claimed in claim 2, wherein the sealing assembly includes an internal threaded structure and an external auxiliary structure located inside and outside a main body, respectively.

4. The negative pressure device as claimed in claim 3, wherein the internal threaded structure has a convex ring at its center, the diameter of the convex ring being smaller than the diameter of the internal threaded structure, and when the sealing assembly is connected to the suction cup, the convex ring presses against the umbrella valve to maintain the negative pressure environment, and the external auxiliary structure comprises a plurality of polygonal structures.

5. The negative pressure device as claimed in claim 1, wherein the suction cup includes a threaded cylinder, a disk having an opening, and a plurality of convex structures, the disk being disposed between the threaded cylinder and the plurality of convex structures.

6. The negative pressure device as claimed in claim 5, wherein the plurality of convex structures of the suction cup are arranged radially and curved around the center of the disk, and the plurality of convex structures gradually narrow from the center to the end, and the plurality of convex structures have a gap between each other, the gaps collectively defining a plurality of gas guiding channels, suitable for preventing the suction cup from completely adhering to the target object and blocking the airflow when it is pressed against a target object under the negative pressure environment, thus ensuring that the gas is drawn away.

7. The negative pressure device as claimed in claim 1, wherein the suction adapter includes a central connecting post located on a main body, the central connecting post being disposed on the top of the main body of the suction adapter, the central connecting post having an air intake and an annular protrusion, the air intake of the central connecting post being used to communicate with the internal space of the suction cup, and the central connecting post being used to connect the suction adapter.

8. The negative pressure device as claimed in claim 7, wherein the suction adapter includes a plurality of external ribs distributed on the outer edge of one of the bodies of the suction adapter.

9. The negative pressure device as claimed in claim 1, wherein the umbrella valve includes a valve stem, an elastic valve disc, and a base, the two ends of the valve stem are respectively connected to the elastic valve disc and the base, the suction cup includes an opening for the valve stem to pass through, and at least one ventilation gap is formed between the outer wall of the valve stem and the inner wall of the opening for the gas to pass through.

10. A negative pressure system comprising a negative pressure device as described in any one of claims 1 to 9, wherein the negative pressure device is used to promote wound healing.

11. The negative pressure system as described in claim 10 further includes a waterproof membrane having an opening and a dressing, wherein the dressing covers a target object, the waterproof membrane is disposed on the dressing and the target object, the suction cup of the negative pressure device passes through the opening of the waterproof membrane and is connected to the suction adapter assembly of the negative pressure device, so as to tightly clamp the periphery of the opening of the waterproof membrane between the suction adapter assembly and the suction cup, and the waterproof membrane, the suction cup, the dressing and the target object are tightly adhered to form a closed environment, so that the negative pressure device has a negative pressure maintenance capability.

12. The negative pressure system as claimed in claim 11, wherein the negative pressure maintenance capability of the negative pressure device is maintained in the range of 75% to 99% for 6 to 24 hours.

13. The negative pressure system as described in claim 11, wherein the negative pressure maintenance capability of the negative pressure device is maintained in the range of 90% to 99% for 12 hours.

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