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Self-retaining catheter and inserting apparatus thereof

  • US 6,074,378 A
  • Filed: 06/08/1998
  • Issued: 06/13/2000
  • Est. Priority Date: 03/31/1997
  • Status: Expired due to Fees
First Claim
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1. A self-retaining catheter comprising:

  • a tubular catheter body; and

    a wire having an elastic portion which is formed resiliently into a winding shape, said wire being connected to a leading end portion of the catheter body,wherein said self-retaining catheter is able to be self-retained by acting resilient force, which is raised by the resilient deformation of said elastic portion, on an inner wall of a tubular organ, said self-retaining catheter including;

    an aperture for outflow of a medical fluid, said aperture being formed in a slit shape, said aperture opening when a pressure of the fluid inside said catheter is applied thereto, said aperture closing when the pressure of the fluid in said catheter is not applied thereto, said aperture being arranged so as not to overlap with said wire; and

    a contrast chip mounted near said aperture.

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