Method of producing a cermet-containing bushing for an implantable medical device

Patent metadata

Field	Value
Publication number	US-9480168-B2
Application number	US-201414171275-A
Country	US
Kind code	B2
Filing date	Feb 3, 2014
Priority date	Aug 4, 2009
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

One aspect relates to a method for producing an electrical bushing for an implantable medical device. The method includes generating an insulation element green compact for an insulation element from an insulating composition of materials. The insulation element green compact is partially sintered. At least one cermet-containing conduction element green compact for a conduction element is formed. The at least one conduction element green compact is introduced into the insulation element green compact. The insulation element green compact and the at least one conduction element green compact are fired to obtain an insulation element with at least one conduction element.

First claim

What is claimed is:

1. A method for producing an electrical bushing for an implantable medical device, the method comprising:
generating an insulation element green compact for an insulation element from an insulating composition of materials;
partially sintering the insulation element green compact;
forming at least one cermet-containing conduction element green compact for a conduction element;
introducing the at least one conduction element green compact into the insulation element green compact;
firing the insulation element green compact and the at least one conduction element green compact to obtain an insulation element with at least one conduction element;
characterized in that partially sintering the insulation element green compact forms a surface hardness of the insulation element green compact thereby allowing for handling the insulation green compact before the firing of the insulation element green compact and the at least one conduction element green compact.

2. The method according to claim 1 , further comprising surrounding the insulation element with a holding element.

3. The method according to claim 1 , characterized in that forming at least one cermet-containing conduction element green compact comprises partial sintering of the conduction element green compact.

4. A method for producing an electrical bushing for an implantable medical device, the method comprising:
generating an insulation element green compact for an insulation element from an insulating composition of materials;
partially sintering the insulation element green compact;
forming at least one cermet-containing conduction element green compact for a conduction element;
introducing the at least one conduction element green compact into the insulation element green compact;
firing the insulation element green compact and the at least one conduction element green compact to obtain an insulation element with at least one conduction element,
characterized in that, prior to firing the insulation element green compact and the at least one conduction element green compact, the method comprises:
producing a cermet-containing holding element green compact for a holding element,
introducing at least one bearing element green compact into the insulation element green compact, and introducing the insulation element green compact into the holding element green compact;
whereby firing the insulation element green compact and the at least one conduction element green compact comprises firing the insulation element green compact and the at least one bearing element green compact and the holding element green compact to obtain an insulation element with at least one bearing element and a holding element.

5. The method according to claim 4 , characterized in that the production of the cermet-containing holding element green compact comprises partial sintering.

6. A method for producing an electrical bushing for an implantable medical device, the method comprising:
generating an insulation element green compact for an insulation element from an insulating composition of materials;
forming at least one cermet-containing conduction element green compact for a conduction element;
partially sintering the at least one cermet-containing conduction element green compact;
introducing the at least one conduction element green compact into the insulation element green compact;
producing a cermet-containing holding element green compact for a holding element;
introducing the insulation element green compact into the holding element green compact;
firing the holding element green compact, the insulation element green compact and the at least one conduction element green compact to obtain an insulation element with at least one conduction element and a holding element.

Assignees

• Heraeus Precious Metals Gmbh
• Heraeus Deutschland Gmbh & Co Kg

Inventors

• Troetzschel Jens
• Specht Heiko

Classifications

• A61N1/3754 Primary

  Feedthroughs · CPC title

• H05K3/30 Primary

  Assembling printed circuits with electric components, e.g. with resistors · CPC title

• Y10T29/4913

  Assembling to base an electrical component, e.g., capacitor, etc. · CPC title

• Y10T29/49227

  Insulator making · CPC title

• H01B19/00

  Apparatus or processes specially adapted for manufacturing insulators or insulating bodies {(manufacture of porcelain for electric insulation C04B33/26)} · CPC title