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Strain relief for percutaneous lead

  • US 4,579,120 A
  • Filed: 01/29/1985
  • Issued: 04/01/1986
  • Est. Priority Date: 09/30/1982
  • Status: Expired due to Term
First Claim
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1. A system for anchoring and relieving strain on a flexible percutaneous lead which exits the body of a patient, comprising:

  • a one-piece molded retaining member including a stem portion of reduced diameter, a flexible disc portion of greater diameter at one end of said stem portion, and a bulbous head portion at the other end of said stem portion, said stem and bulbous portions being generally coaxial and perpendicular to said disc portion, said disc portion being generally flexible and having a generally flat exterior surface for contacting and conforming to the exterior of the patient'"'"'s body adjacent the exit point of the percutaneous lead;

    said flexible retaining member having an internal passage of substantially constant cross section extending longitudinally within said stem, disc and head portions of said retaining member, said passages being dimensioned to snuggly receive the percutaneous lead;

    an adhesive layer on said exterior surface of said disc portion for adhering said retaining member to the body;

    said bulbous head portion having a diameter greater than that of said stem portion such that said head and disc portions together define an annular recess region encircling the exterior of said stem portion; and

    compression means within said annular recess region and surrounding said stem portion for compressing said stem portion radially inwardly such that said passage is constricted around the lead whereby movement of the lead within the passage is restrained when said stem portion is compressed.

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