Anti-bacterial medical waterproof material and sheet made of the same

Abstract

A waterproof material of a circular knitted fabric woven from a first yarn and a second yarn. The first yarn is a nylon filament containing ultra-micro silver ions and the second yarn is a polyester yarn. The fabric is made of approximately 20 to 40% of the first yarn and 60-80% of the second yarn. An antibacterial waterproof sheet has a multilayer construction for controlling bacterial growth, eliminating odor and resisting wear and includes a polyurethane film having an upper and lower side forming an innermost layer. A layer of polyurethane adhesive is disposed on each upper and lower side of the film. A layer of knitted material is disposed on each layer of adhesive forming opposed outer layers of the sheet. The knitted material is woven from the first yarn and a second yarn. The silver powder ions are 1 micron or less.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an anti-bacterial waterproof material made of a circular knitted fabric woven with a nylon yarn containing an ultra-micro powder of silver effective in controlling the growth of various bacteria from the moisture associated with patient use, and more particularly, to a medical sheet made of the material of the present invention. [0003] 2. Description of the Related Art [0004] As our society ages, the number of the bedridden elderly is increasing annually. Many of these patients require an additional medical waterproof sheet placed beneath their lower back on a bed or other support surface. [0005] Typical waterproof sheets used in medical facilities, such as nursing homes and hospitals are placed in the center of a mattress of a bedridden patient to prevent sweat, bodily fluid and / or waste of the patient from penetrating the mattress or support. [0006] At the core of these conventiona...

AI Technical Summary

Benefits of technology

[0012] In accomplishing these and other objects of the present invention there is provided an antibacterial waterproof sheet having a multilayer construction for controlling bacterial growth, eliminating odor and resisting wear, comprising a polyurethane film having an upper and lower side forming an innermost layer. A layer of polyurethane adhesive is disposed on each upper and lower side of the film. A layer of knitted material is disposed on each layer of adhesive forming opposed outer layers of the sheet. The knitted material is woven from a first yarn and a second yarn. The first yarn is a polyester yarn and the second yarn is a nylon filament containing ultra-micro silver ions.

Problems solved by technology

However, these conventional waterproof sheets do not eliminate odor, are not anti-bacterial and are not designed to control the growth of bacteria such as MRSA, staphylococcus aureus, pneumobacillus and E.coli bacteria.

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