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Apparatus for actively monitoring device for lead fixation in implantable tissue stimulators

  • US 7,047,075 B2
  • Filed: 04/17/2003
  • Issued: 05/16/2006
  • Est. Priority Date: 04/17/2003
  • Status: Active Grant
First Claim
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1. In an implantable medical device comprising a hermetically sealed housing containing an electronic circuit, a header affixed to the housing and having at least one lead terminal receiving bore formed therein, a lead lock member having a longitudinal bore adapted to receive a proximal end portion of a medical lead terminal inserted into the lead terminal receiving bore, a threaded transverse bore intersecting the longitudinal bore of the lead lock member and a setscrew contained in the threaded bore for locking the lead terminal lead lock member, the improvement comprising:

  • (a) a force sensor disposed in the header for producing a signal indicative of the force applied to the lead terminal by said setscrew; and

    (b) a feed through having conductors connecting the force sensor to a node of the electronic circuit.

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