Pressure-sensitive hydrophilic laminate structures for use in wo

Details Pressure-sensitive hydrophilic laminate structures for use in wo Pressure-sensitive hydrophilic laminate structures for use in wo

1985-10-02

1990-02-27

Dixon, Jr., William R.

Surgery

Means for introducing or removing material from body for...

Treating material applied to or removed from external...

128156, A61F 1300

Patent

active

049042475

ABSTRACT:
The present invention describes a pressure-sensitive hydrophilic laminate composite comprising contiguous layers of a tacky pressure sensitive hydrophilic polymer blend, and a non-tacky hydrophilic polymer blend. Numerous variations in individual layer formulations allow for a multitude of hydrophilic blend laminate composite structures, which are readily utilizable as wound dressings, and/or transdermal and topical delivery systems incorporating a wide range of bioactive agents. The hydrophilic laminate composite structurese are characterized by ease of application, adhesiveness to skin, high tensile strength, mechanical integrity, transparency, fluid absorbency, and highly effective bacterial barrier properties, and permeability to water vapor, oxygen and drugs and/or bioactive agents. In the preferred embodiments, they are further characterized in their ability to inhibit severe maceration of the wound as well as underlying tissue destruction upon removal.

REFERENCES:
patent: 4300820 (1981-11-01), Shah
patent: 4321117 (1982-03-01), Kaetsu et al.
patent: 4323557 (1982-04-01), Rosso et al.
patent: 4369229 (1983-01-01), Shah
patent: 4462665 (1984-07-01), Shah

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