Head part for an implantable medical device

• US 8,742,268 B2
• Filed: 01/30/2012
• Issued: 06/03/2014
• Est. Priority Date: 01/31/2011
• Status: Active Grant

• Current Assignee: Heraeus Deutschland GmbH & Co. KG (Heraeus Holding GMBH)
• Original Assignee: Heraeus Precious Metals GmbH & Co. KG (Einhorn Verwaltungsgesellschaft mbH)
• Inventors: Reisinger, Andreas, Glynn, Jeremy
• Primary Examiner(s): Patel, Dhirubhai R
• Application Number:
  US13/361,355
• Publication Number:
  US 20120193141A1
• Time in Patent Office: 855 Days
• Field of Search: 174/650, 174/659, 361/679.01, 439/557
• US Class Current: 174/659
• CPC Class Codes: A61N 1/3752 Details of casing-lead connections
• CPC Class Codes: A61N 1/3754 Feedthroughs
• CPC Class Codes: H01R 13/5224 for medical use
• CPC Class Codes: H01R 2201/12 for medicine and surgery
• CPC Class Codes: H01R 24/58 Contacts spaced along longitudinal axis of engagement
• CPC Class Codes: H01R 43/20 for assembling or disassembling contact members with insulating base, case or sleeve
• CPC Class Codes: Y10T 29/49169 Assembling electrical component directly to terminal or elongated conductor

Abstract

An electrical bushing for use in a housing of an implantable medical device is proposed. The electrical bushing includes at least one electrically insulating base body and at least one electrical conducting element. The conducting element establishes, through the base body, at least one electrically conductive connection between an internal space of the housing and an external space. The conducting element is hermetically sealed with respect to the base body, at least in part. The at least one conducting element includes at least one cermet. The electrical bushing includes at least one head part. The head part includes at least one plug connector element that enables electrical connection of at least one plug element from the external space to the plug connector element.

Claims

1. An electrical bushing for use in a housing of an implantable medical device;

whereby the electrical bushing comprises at least one electrically insulating base body, at least one filter element for frequency filtering and at least one electrical conducting element;

whereby the at least one conducting element comprises a feedthrough element, a contact element and a connecting element and the conducting element establishes, through the base body, at least one electrically conductive connection between an internal space of the housing and an external space;

whereby the conducting element is hermetically sealed with respect to the base body, at least in part;

whereby the at least one of said conducting elements comprises at least one cermet to easily connect to one of other said conducting elements;

characterized in that the electrical bushing comprises at least one head part, whereby the head part comprises at least one plug connector element, whereby the plug connector element enables electrical connection of at least one plug element from the external space to the plug connector element.

2. The electrical bushing according to claim 1, characterized in that the feedthrough element comprises the at least one cermet.

3. The electrical bushing according to claim 1, characterized in that the feedthrough element and the base body are connected in a firmly bonded manner through a firmly bonded sintered connection.

4. The electrical bushing according to claim 1, characterized in that the feedthrough element and the plug connector element are connected in an electrically conductive manner, through at least one connecting element.

5. The electrical bushing according to claim 1, characterized in that the plug connector element comprises at least one plug socket.

6. The electrical bushing according to claim 1, characterized in that the head part is provided as the same part as the base body, at least in part.

7. The electrical bushing according to claim 1, characterized in that the head part is made from an insulating composition of materials, at least in part, whereby the base body is also be made from the insulating composition of materials, at least in part.

8. The electrical bushing according to claim 1, characterized in that the head part comprises at least one first component, whereby the first component and the base body are provided as a single part, whereby the head part further comprises at least one second component, whereby the second component is connected to the first component and, jointly with the first component provides the plug connector element or a part thereof

9. The electrical bushing according to claim 8, characterized in that the at least one contact element of the conducting element is introduced into the first component through at least one mounting opening of the first component, whereby the second component comprises at least one closure, whereby the closure closes the mounting opening, at least in part.

10. The electrical bushing according to claim 8, characterized in that the second component is made from a plastic material, at least in part.

11. The electrical bushing according to claim 8, characterized in that the first component comprises a lower shell, whereby the second component comprises an upper shell, whereby at least one hollow space of at least one plug socket of the plug connector element, is arranged between the lower shell and the upper shell.

12. A method for the manufacture of an electrical bushing whereby the electrical bushing comprises at least one electrically insulating base body, at least one filter element for frequency filtering and at least one electrical conducting element;

whereby the at least one conducting element comprises a feedthrough element, a contact element and a connecting element and the conducting element establishes, through the base body, at least one electrically conductive connection between an internal space of the housing and an external space;

whereby the conducting element is hermetically sealed with respect to the base body, at least in part;

whereby the at least one of said conducting elements comprises at least one cermet to easily connect to one of other said conducting elements;

whereby the electrical bushing comprises at least one head part, whereby the head part comprises at least one plug connector element, whereby the plug connector element enables electrical connection of at least one plug element from the external space to the plug connector element,

characterized in that the method comprises;

a. manufacturing the at least one first component of the head part and of the base body through at least one ceramic manufacturing procedure, whereby the first component and the base body are provided as a single part; and

b. connecting at least one contact element of the conducting element to the first component.

13. The method according to claim 12, characterized in that the contact element is to be connected to the at least one feedthrough element that contains the cermet and is embedded in the base body.

14. The method according to claim 12 further comprising:

c. connecting at least one second component of the head part to the first component.

15. The method according to claim 14, characterized in that the second component is provided, at least in part, as a pre-formed component which is connected to the first component in step c.

16. The method according to claim 14, characterized in that the second component is formed, at least in part, in procedural step c., through a plastic forming procedure.

17. The method according to claim 14, characterized in that the contact element is introduced into at least one opening in the first component in procedural step b., whereby the opening is closed, at least in part, through at least one closure in the subsequent procedural step c., through at least one grouting, whereby the second component comprises the closure.