Perforated elastomeric soft film and wound dressing made therewi

Details Perforated elastomeric soft film and wound dressing made therewi Perforated elastomeric soft film and wound dressing made therewi

1987-01-20

1989-09-19

Apley, Richard J.

Surgery

Truss

Pad

128156, 428286, 4284251, 523111, A61F 1300, A61F 1500

Patent

active

048671509

ABSTRACT:
The perforations in a film-faced wound dressing have been discovered to have edges which, though clearly defined, lack the ability to cut the neoepithelium of a healing wound, with the result that the film affords an unexpectedly high degree of comfort during movement of the patient- and most particularly, when the dressing is changed. This occurs in a thin, soft, self-supporting elastomeric film, such as a polyether polyurethane (PPU) film, having less than 10% crystallinity. The film provides a degree of conformability not attained heretofore; has a softness and elastomeric quality which results in reduced shear associated with the edges of its perforations as compared with the sharp cutting edges of perforations in plastic film; has excellent releaase characteristics enhanced by less than 25% open area (due to perforations) which minimizes the open area into which the neoepithelium may grow.

REFERENCES:
patent: 3307545 (1967-03-01), Surowitz
patent: 3927669 (1975-12-01), Glatt
patent: 4051848 (1977-10-01), Levine
patent: 4081580 (1978-03-01), Kato
patent: 4541426 (1985-09-01), Webster
patent: 4554317 (1985-11-01), Behar et al.
patent: 4657006 (1987-04-01), Rawlings et al.
patent: 4664662 (1987-05-01), Webster
patent: 4686137 (1987-08-01), Ward, Jr. et al.

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