IMPLANTABLE ELECTRIC DEVICE

• US 3,690,325 A
• Filed: 11/02/1970
• Issued: 09/12/1972
• Est. Priority Date: 11/03/1969
• Status: Expired due to Term

• Current Assignee: John Kenny
• Original Assignee: John Kenny
• Inventors: Kenny, John
• Primary Examiner(s): Kamm, William E.
• Application Number:
  US05/086,165
• Time in Patent Office: 680 Days
• Field of Search: 128/419B,419C,419E,419P,419R,421,422,1R,260 136/132,133,167,169,170,177,179,180
• US Class Current: 607/36
• CPC Class Codes: A61N 1/375 Constructional arrangements, e.g. casings
• CPC Class Codes: A61N 1/37512 Pacemakers

Abstract

An implantable electric device which has at least one electric cell, a casing of epoxy resin encapsulating the electric cell, and a thin barrier layer of metal covering the casing, which layer is permeable to gas and relatively impermeable to liquid.

Claims

2. An implantable electric device as claimed in claim 1 wherein the barrier layer is of palladium.

3. An implantable electric device as claimed in claim 2 wherein the palladium layer is vapor deposited.

4. An implantable electric device as claimed in claim 3 wherein the thickness of the palladium layer is approximately 5 microns.

5. An implantable electric device as claimed in claim 2 wherein the palladium layer is deposited electrolessly after suitable preparation of the casing.

6. An implantable electric device as claimed in claim 5 wherein the thickness of the palladium layer is approximately 2 microns.

7. An implantable electric device as claimed in claim 2 wherein the palladium layer is deposited by electroplating after suitable preparation of the casing.

8. An implantable electric device as claimed in claim 7 wherein the thickness of the palladium layer is approximately 2 microns.

9. An implantable electric device as claimed in claim 1 wherein the barrier layer is of aluminum and a further protective layer of silicone rubber or epoxy resin or the like is provided over the barrier layer.