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O-ring for incrementally adjustable incision liner and retractor

  • US 6,613,952 B2
  • Filed: 07/16/2002
  • Issued: 09/02/2003
  • Est. Priority Date: 10/03/2001
  • Status: Expired due to Fees
First Claim
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1. An O-ring for use in an adjustable surgical wound protector, comprising:

  • a circular torus having a circular cross-section comprising four quadrants wherein material defining two diagonally opposed quadrants is removed, leaving two diagonally opposed recesses and a solid cross-section including a cross-sectional center that is radially equidistant from a central longitudinal axis and a resilient configuration for squeezing into an oblong shape that is insertable into a surgical incision wherein said solid portion of said O-ring defines a first solid quadrant and a diagonally opposed second solid quadrant wherein said first solid quadrant includes a curved outer surface, a curved annular surface, and a sinusoidal surface, and said second solid quadrant includes a curved outer surface, a curved annular surface, and a sinusoidal surface; and

    two recesses that are selectively sized and shaped to enable a snap-action rolling of said O-ring about said cross-sectional center in predetermined increments.

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