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

• US 9,480,168 B2
• Filed: 02/03/2014
• Issued: 10/25/2016
• Est. Priority Date: 08/04/2009
• Status: Active Grant

• Current Assignee: Heraeus Deutschland GmbH & Co. KG (Heraeus Holding GMBH)
• Original Assignee: Heraeus Deutschland GmbH & Co. KG (Heraeus Holding GMBH)
• Inventors: Troetzschel, Jens, Specht, Heiko
• Primary Examiner(s): PHAN, THIEM D
• Application Number:
  US14/171,275
• Publication Number:
  US 20140144014A1
• Time in Patent Office: 995 Days
• Field of Search: 298/60, 295/921, 295/94, 296/021, 298/25, 298/32, 298/48, 298/51, 298/87, 607/5, 607/9, 607/36, 607/37, 607/53, 607/54, 607/115, 607/116, 174/650, 174/659
• US Class Current: 1/1
• CPC Class Codes: A61N 1/3754 Feedthroughs
• CPC Class Codes: H01B 13/0036 Details
• CPC Class Codes: H01B 17/306 by embedding in material other than glass or ceramics
• CPC Class Codes: H01B 19/00 Apparatus or processes specially adapted for manufacturing insulators or insulating bodies manufacture of porcelain for electric insulation C04B33/26
• CPC Class Codes: H05K 3/30 Assembling printed circuits with electric components, e.g. with resistor
• CPC Class Codes: Y10T 29/4913 Assembling to base an electrical component, e.g., capacitor, etc.
• CPC Class Codes: Y10T 29/49227 Insulator making

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.

Claims

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.