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Protective sheath for catheter assembly

  • US 4,840,613 A
  • Filed: 04/27/1988
  • Issued: 06/20/1989
  • Est. Priority Date: 04/27/1988
  • Status: Expired due to Term
First Claim
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1. In a catheter assembly having a cannula having cannula distal and proximal end portions and a longitudinal duct therethrough from the cannula distal end portion to the cannula proximal end portion, an inserter having inserter distal and proximal end portions and a guide channel therethrough from the inserter distal end portion to the inserter proximal end portion, the cannula slidably fitting in the guide channel, and a hub structure having hub distal and proximal end portions and a passageway therethrough from the hub distal end portion to the hub proximal end portion, the cannula proximal end portion being attached to the hub structure with the duct in flow communication with the passageway, an improvement comprising:

  • a sheath having sheath distal and proximal end portions and a longitudinal slit or weakened portion extending therealong from said sheath distal end portion to said sheath proximal end portion, said sheath being about said cannula between said inserter and said hub structure;

    sheath stripping means carried by said inserter for stripping said sheath, starting from said sheath distal end portion, from about said cannula as said cannula is slid distally through said guide channel;

    a first lock member carried by said inserter; and

    a second lock member about said cannula between said inserter and said hub structure, said first and second lock members being interlockable with on another.

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