Pneumatic pressure belts use inner bladders with pressure-splitting structures.

Abstract

This invention relates to an inner bladder used in the pressurizing belt of a pneumatic pressurizing device. By providing an expansion-restricting structure on the surface or inside of the inner bladder, the pressure is evenly distributed during inflation, preventing localized over-inflation or excessive pressure. This achieves uniform pressure distribution and reduces skin damage. To achieve the above objectives, the inner bladder of this novel pressure belt includes: an inner bladder body having an inflatable air chamber; an air inlet structure for connecting an external air source to the inner bladder body; and an expansion limiting structure disposed on the inner bladder body. One of the expansion-limiting structures can be a strip-shaped unit or a mesh unit, used to limit excessive expansion of local parts of the inner bladder and to distribute pressure evenly.

Claims

1. A pressure-splitting inner bag for use with a pneumatic pressure belt, comprising: An inner pouch body with an inflatable air chamber; An air inlet structure allows an external air source to connect to the inner bag body; An expansion-restricting structure is provided on the inner bladder body, which can control the expansion deformation of the inner bladder through at least one restricting structure to achieve the effect of uniform pressure distribution.

2. The inner pouch as described in claim 1, wherein the expansion-restricting structure can form a space within the inner pouch for guiding airflow.

3. The inner pouch as described in claim 1, wherein the strip unit in the expansion limiting structure, each strip must have a width of 3 to 4 cm and not exceed 75% of the width of the inner pouch, in order to effectively limit the expansion portion.

4. The inner pouch as described in claim 1, wherein the expansion-restricting structure is placed in the central part of the inner pouch and is designed to not exceed 50% to 75% of the length of the inner pouch.

5. The inner bladder as described in claim 1, wherein the expansion-limiting structure is used to guide the gas flow direction, distribute the pressure evenly, and prevent localized over-expansion of the central portion of the inner bladder.

6. The inner bladder as described in claim 1, wherein the inflation-restricting structure may be disposed inside the airbag body.

7. The inner bladder as described in claim 1, wherein the inflation-restricting structure may be disposed on the surface of the airbag body.

8. The inner bladder as described in claim 1, wherein the inflation-restricting structure may be disposed in the interlayer of the airbag body.

9. The inner pouch as described in claim 1, wherein the expansion-restricting structure may be designed to be configured with one or more strips.

10. The inner pouch as described in claim 1, wherein the expansion-restricting structure may be designed to be placed using staggered mesh strips.

11. The inner pouch as described in claim 1, wherein the expansion-restricting structure can be configured in a parallel arrangement with different spacings.

12. The inner pouch as described in claim 1, wherein the expansion-restricting structure may be made of a low-elasticity or non-elastic material.

13. The inner bladder as described in claim 1, wherein the inflation-restricting structure is integrally formed with the airbag body.

14. The inner bladder as claimed in claim 1, wherein the expansion-restricting structure is fixed to the airbag body by adhesive bonding or thermoforming.

15. The inner pouch as described in claim 1 can be used inside the pressure belt of a medical pneumatic device.

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