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US 8,298,478 B2Granted
Method of preparing an electrode
AssigneeMedtronic, Inc.
InventorsMichael B. Hintz, Paul B. Young
Life of this patent
Estimating the term…
Abstract
Methods of preparing an electrode are provided. A metal powder can be sintered onto a portion of a lead wire to form a connection region. An additional metal powder can be de-oxidation sintered onto the connection region to form the electrode. The oxides formed during the de-oxidation sintering are then removed from the electrode.
Claims13
A method of preparing an electrode for a medical device comprising:
- a. pre-treating a region of an electrically conductive lead wire;
- b. de-oxidation sintering a metal powder compact comprising the lead wire embedded in a metal powder in the presence of a reactive metal vapor wherein the lead wire and metal powder become bonded together during the de-oxidation sintering, wherein the pre-treating improves bonding of the metal powder compact to the lead wire and comprises pre-bonding a small quantity of the metal powder to a portion of the lead wire using conventional vacuum sintering at a temperature higher than that used for the de-oxidation sintering process;
- and
- c. removing reactive metal oxides formed during the de-oxidation sintering process.
1 more element
A method of preparing an electrode for a medical device comprising:
- a. pre-treating a region of an electrically conductive lead wire;
- b. de-oxidation sintering a metal powder compact comprising the lead wire embedded in a metal powder in the presence of a reactive metal vapor wherein the lead wire and metal powder become bonded together during the de-oxidation sintering, wherein the pre-treating improves bonding of the metal powder compact to the lead wire and comprises pre-bonding a small quantity of the metal powder to a portion of the lead wire using conventional vacuum sintering at a temperature greater than 1350 C. but less than 1600 C.;
- and
- c. removing reactive metal oxides formed during the de-oxidation sintering process.
1 more element
Dependencies are inferred from the claim text.