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Endoscopic expandable retraction device

  • US 5,402,772 A
  • Filed: 08/13/1993
  • Issued: 04/04/1995
  • Est. Priority Date: 05/29/1991
  • Status: Expired due to Term
First Claim
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1. Apparatus for retracting an organ inside the body to gain access to an adjacent tissue, the apparatus comprising:

  • expansible cage means capable of being inserted into the body through a small incision or puncture in a collapsed state, andexpansion means for selectively expanding the expansible cage means inside the body to an expanded state, the expansion means including an envelope enclosing a fluid-inflatable chamber, wherein the expansible cage means includes an additional envelope mounted inside the inflatable chamber and enclosing an additional fluid-inflatable chamber, and wherein;

    the expansible cage means is additionally capable of maintaining the expanded state independently of the expansion means after the expansible cage means has been expanded by the expansion means to the expanded state.

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