Medical dressing having a thermally expandable passage

Details Medical dressing having a thermally expandable passage Medical dressing having a thermally expandable passage

1995-06-02

1998-11-10

Watkins, William

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428131, 428132, 428134, 428135, 428137, 428913, 426326, 426324, 426316, 426415, 426118, 383102, 383103, 602 47, A61F 1500, B32B 324

Patent

active

058340939

ABSTRACT:
A bilayer laminated medical dressing having a thermally expandable passage is provided. The medical dressing achieves gas permeability as a function of temperature by cutting a star-shaped hole through the dressing when the dressing is flat and relaxed. On warming, the leaves between the radial cuts of the star-shaped hole curl and increase the hole size. Such a material is useful as a medical dressing.

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Printout Abstracts "Freshhold," Ventflex, Hercules and DRG Ventflex.
"Creating the Right Atmosphere," Process Industry Journal, Jul./Aug. 1989, p. 9.
"Packing Discovery Prolongs Shelf-Life," Independent, Jun. 1989.

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