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Cap for medical appliance to be retained in human body

  • US 5,817,067 A
  • Filed: 02/20/1996
  • Issued: 10/06/1998
  • Est. Priority Date: 12/01/1995
  • Status: Expired due to Fees
First Claim
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1. A cap for a medical appliance to be retained in a human body, wherein a lid body is coupled to a connecting plug body through a hinge, characterized in that:

  • said connecting plug body, said hinge, and said lid body are integrally formed of a same synthetic resin material;

    said lid body has an inner surface with a center area and is provided with an engaging member being made of a resilient material, said engaging member being located on said center area of said inner surface;

    said lid body is provided with a strap located on an end of said lid body;

    said connecting plug body has an upper face with an outlet port, said outlet port having a peripheral edge; and

    said lid body covers said upper face by means of an elastic recovery force of said hinge when said strap is pulled to said connecting plug body, so that said engaging member engages with said peripheral edge of said outlet port in said connecting plug body in an airtight manner,wherein an annular magnet is secured to the upper face of said connecting plug body, another annular magnet is secured to the inner surface of said lid body around said engaging member, said annular magnets being 5 to 15 mm in diameter, 0.5 to 5.0 mm in thickness, and 100 to 2000 gauss in magnetic flux density, and magnetic poles on contact surfaces of said annular magnets are directed in opposition to each other.

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