EP0064289A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Body implantable lead
Assignee: Medtronic Inc
•
Filing: 1982-05-03
•
Granted: —
•
Expires: 2002-05-03
Abstract
Abstract A body implantable lead (10) having an electrode (30) with a thin layer (60) of a biocompatible precious metal exposed to body tissue. The electrode structure (38) is of a relatively inexpensive base metal such as titanium, which is considered biocompatible for use as a cathode. A thin layer (50) of titanium is sputtered over the distal tip of the electrode assembly. A thin outer layer (60) of a precious metal from the plantinum group is sputtered over the sputtered titanium layer. The completed electrode assembly is used in the fabrication of a body implantable lead using standard assembly practices.
Inventors
- 👤 Robert C. Kraska
- 👤 Joseph F. Lessar
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 15:29
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/0565
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A body implantable lead (10) for delivery of stimulation energy to a desired body site of the type having an exposed electrode (30) carried by the lead, characterized by said electrode comprising an electrode assembly (38) of a first material and a second material (60) covering the exposed portion of said first material, said second material being a noble metal or an alloy thereof.
Claim 2
Dependent Claim
64 words
A body implantable lead (10) for delivery of stimulation energy to a desired body site of the type having an exposed electrode (30) carried by the lead, characterized by said electrode comprising an electrode assembly (38) of a first material and a second material (60) covering the exposed portion of said first material, said second material being a noble metal or an alloy thereof.
Claim 3
Dependent Claim
21 words
A body implantable lead according to claim 1 wherein said second material (60) has a thickness no greater than 50,000 A°.
Claim 4
Dependent Claim
22 words
A body implantable lead according to claim 2 wherein said second material (60) has a thickness of approximately 1,000 to 10,000 A°.
Claim 5
Dependent Claim
17 words
A body implantable lead according to claim 1, 2 or 3 wherein said first material is titanium.
Claim 6
Dependent Claim
31 words
A body implantable lead according to any one of claims 1 to 4 wherein said second material (60) is selected from the group consisting of platinum, iridium, rhodium and alloys thereof.
Claim 7
Dependent Claim
31 words
A body implantable lead according to any one of claims 1 to 5 further comprising: a layer (50) of a reactive metal intermediate said first material and said second material (60).
Claim 8
Dependent Claim
23 words
A body implantable lead according to claim 6 wherein said layer (50) of reactive metal is 1,000 A° to 10,000 A° in thickness.
Claim 9
Dependent Claim
19 words
A body implantable lead according to claim 6 or 7 wherein said layer (50) of reactive metal is titanium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.