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Installation of filter capacitors into feedthroughs for implantable medical devices

  • US 6,490,148 B1
  • Filed: 01/02/2002
  • Issued: 12/03/2002
  • Est. Priority Date: 01/02/2002
  • Status: Active Grant
First Claim
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1. A feedthrough comprising:

  • a lead;

    a ferrule defining a capacitor receiving recess and the ferrule also defining an insulator receiving recess;

    a capacitor disposed in the capacitor receiving recess, the capacitor defining a capacitor passageway for the lead to pass;

    an insulator disposed in the insulator receiving recess, the insulator defining an insulator passageway for the lead to pass through;

    an insulator braze material for forming an insulator-ferrule braze joint and for forming an insulator-lead braze joint; and

    a capacitor braze material for forming a capacitor-ferrule braze joint and for forming a capacitor-lead braze joint, wherein the insulator braze material is different than the capacitor braze material wherein and the insulator-ferrule braze joint and the insulator-lead braze joint are brazed before the capacitor-ferrule braze joint the capacitor-lead braze joint are brazed.

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