A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
128/111
A61B 19/00 (2006.01) A61F 2/12 (2006.01)
Patent
CA 1321523
Abstract of the Disclosure The specification describes and claims a tissue expander capable of insertion in a human body to induce formation of a pocket into which a mammary prosthesis may be inserted comprising (a) an expander portion (12,102) which is flaccid and is adapted to be inflated progressively in the body to induce formation of said pocket, (b) a support plate portion (14,114) which is sufficiently flexible that it may be bent or folded upon itself for insertion into or removal from the body through an incision in the body and to recover to a plate-like condition within the body, (c) feed tube means (20,120) attached to the expander portion and having a valve (24,124) through which inflating medium may be supplied into the expander portion, and (d) releasable securing means (18,30,118,130) whereby the support portion and the expander portion are connected together until it is desired to release the expander portion from the support portion. Preferably the releasable securing means comprises snap fastener means, a male portion of the snap fastener means being secured to the expander portion (a) and a female portion of said snap fastener means being secured to the support portion (b). The releasable securing means facilitates location of the expander portion and the valve, and permits detachment of the expander portion from the support portion as desired. The support portion supports the expander portion in the body and resists contraction of the fibrous capsule produced as scar tissue forms. It also forms a substantially flat wall for the developing pocket and provides a pressure plate which serves to ensure that expansion of tissue, induced by inflation of the expander portion, takes place in a direction outwardly of the body.
597105
Audretsch Werner
Dow Corning Corporation
Gowling Lafleur Henderson Llp
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