The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 1988
Filed:
May. 20, 1987
Michael Szycher, Lynnfield, MA (US);
Jonathan L Rolfe, North Easton, MA (US);
Thermedics, Inc., Woburn, MA (US);
Abstract
An anisotropic wound dressing comprised of a knitted reinforcing fabric which is sandwiched between a crosslinked aliphatic polyurethane. The wound dressing is fabricated by dipping the fabric into a polyurethane-forming coating solution to form a thin film which coates the fibres of the fabric and fills the interstices with a film or layer. The film which coats the fabric is cured by ultraviolet radiation and one side of the film is coated with pressure sensitive adhesive to form a wound dressing. In the most preferred embodiments, the knitted reinforcing fabric is an anisotropic fabric formed with a basic stitch construction to create equally spaced and sized hexagonal interstices. Because of the fabric reinforcement, the resulting oxygen permeable product can be made thin, and yet be anisotropic and strong. The resulting product does not wrinkle easily and holds its shape so it is also easily applied.