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Bladder catheter

  • US 4,154,242 A
  • Filed: 06/17/1977
  • Issued: 05/15/1979
  • Est. Priority Date: 06/17/1977
  • Status: Expired due to Term
First Claim
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1. In a catheter for insertion in a body cavity of the type comprising a tubular member having a distal end and a proximal end, a longitudinally extending lumen open at said proximal end, and means for releasably retaining said tubular member in said body cavity, said retaining means being defined by a plurality of circumferentially spaced longitudinally extending slits in said tubular member adjacent said distal end, at least the portions of said tubular member intermediate the extremities of said slits being flexible, the improvement comprising:

  • spring means embedded in each of said intermediate portions, said spring means being unstressed when said intermediate portions are flush with the adjacent unslitted portions of said tubular member for biasing said intermediate portions to said flush position; and

    means for releasably retracting said distal end relative to said proximal to flex said intermediate portions and said spring means outwardly from said adjacent portions, said spring means returning to their unstressed position upon release of said retracted means whereby said intermediate portions are returned to said flush position.

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