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Skin expansion device and method of making the same

  • US 4,666,447 A
  • Filed: 01/30/1985
  • Issued: 05/19/1987
  • Est. Priority Date: 01/30/1985
  • Status: Expired due to Term
First Claim
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1. An improved implantable expansion device having an inflatable envelope with a fluid retaining interior for implantation, the envelope being fluidly connected by a fill tube to a remote implantable injection site, the improvement comprising:

  • said envelope being fixedly attached to a substantially non-extensible base having a base perimeter and said base having a tongue portion extending beyond said base perimeter said fluid retaining, the channel being formed in said base and extending from said opening through the base to a position proximate a perimeter of the base into said tongue portion and fluidly connectable to the injection site from the position proximate the perimeter so that inflating fluid flows between the injection site through the fill tube into said tongue portion through said channel and said opening and into the interior of the envelope, such that when the envelope is inflated after implantation, the base and the fill tube remain in substantially the same plane as when implanted.

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