Method of making envelope for tissue expander

Details Method of making envelope for tissue expander Method of making envelope for tissue expander

1989-10-20

1991-07-30

Green, Randall L.

Surgery

Miscellaneous

Devices placed entirely within body and means used therewith

623 8, 623901, A61F 212

Patent

active

050352490

ABSTRACT:
A tissue expander and a method of making a tissue expander which includes (a) a fluid-tight envelope which is inflatable by a single means for inflation and which has an expandable upper section formed of (i) a first elastic portion and (ii) a second elastic portion formed of a material having a lower modulus of elasticity than that of the material forming the first portion, so that during the inflation of said envelope the modulus of elasticity of each portion at least partially controls the amount of expansion of each portion, thereby allowing the envelope to assume a complex shape. The tissue expander also has a means for inflating the envelope with a biocompatible fluid.

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patent: 4828560 (1989-05-01), Heyler
patent: 4863469 (1989-09-01), Van Beek et al.
"Mentor Directa-Span Tissue Expander", by Mentor Corporation, 2 pages.
ASTM D 412-87 Standard Test Methods for Rubber Properties in Tension 5/1987.
ASTM D 3183-84 Standard Practice for Rubber-Preparation of Pieces for Test Purposes from Products 5/1984.

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