Self-sealing tissue expander and method

Details Self-sealing tissue expander and method Self-sealing tissue expander and method

1989-08-07

1991-11-19

Isabella, David J.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Breast prosthesis

Implantable

A61F 212

Patent

active

050663038

ABSTRACT:
The self-sealing tissue expander includes inner and outer layers of relatively nonflowable material and a median layer of flowable material, The median layer of flowable material which can include one or more sublayers of flowable material is under a predetermined compression imposed by the inner and outer layers due to a prestressing of the tissue expander shell during formation of the tissue expander. The self-sealing shell seals an opening in the shell wall following removal of an infusion needle. In all embodiments of the invention a needle stop member is provided to prevent the needle that accesses the fluid chamber from passing outwardly of the tissue expander. The need for a septum, a fluid conduit or a special fluid entry opening in the tissue expander shell is thus optional. The shell can also be made relatively more stretchable in some areas than in other areas.

REFERENCES:
patent: 4428364 (1984-01-01), Bantolo

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