§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
US4964414A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrode for use in implanting in a living body

Assignee: Nippon Seisen Co Ltd
•
Filing: 1988-06-06
•
Granted: 1990-10-23
•
Expires: 2008-06-06
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract The present invention relates to an electrode which is implanted in a living body, and which is used as an electrical stimulation system for the functional training or restoration of paralyzed muscles, and for the measurement of electrical signals of the living body, and the like. The electrode comprises: a core comprising a plurality of infinitesimal stainless steel wires of over 180 kg/mm2 in tensile strength and under 25 microns in diameter; and a resin coat provided on the surface of the core, made of a resin compatible with the living body. According to one aspect of the invention, the diameter of the electrode is under 0.3 mm; the electrode is provided with a spirally coiled part along its longitudinal direction; the core is stranded in one direction; and the above mentioned coiled part is coiled in the direction opposite to the stranding direction of the core.

Inventors

  • 👤 Yasunobu Handa
  • 👤 Nozomu Hoshimiya
  • 👤 Takashi Oda
  • 👤 Yoshinori Tanimoto

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 14:30
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; H; H01; H01B; H01B7/00; H01B7/04; H01B7/048

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 149 words
An electrode which is used as an implant for a living body which comprises a core member made of a plurality of infinitesimal stainless steel wires twisted into a single strand member, each of said stainless steel wires having a tensile strength greater than 180 kg/mm 2 and a diameter of less than 25 microns, and a resinous coating, compatible with the living body, provided on the surface of the core member, said electrode being in the form of a coil which is formed by closely coiling said core member provided with said resinous coating so as to have a coiling diameter of less than 0.8 mm, said coiling diameter being in the range of 2 to 6 times the diameter of the resinous coating provided on the core member, said coil having an end portion thereof which exposes the stainless steel wires for contact with said living body.
Claim 2
Dependent Claim 149 words
An electrode which is used as an implant for a living body which comprises a core member made of a plurality of infinitesimal stainless steel wires twisted into a single strand member, each of said stainless steel wires having a tensile strength greater than 180 kg/mm 2 and a diameter of less than 25 microns, and a resinous coating, compatible with the living body, provided on the surface of the core member, said electrode being in the form of a coil which is formed by closely coiling said core member provided with said resinous coating so as to have a coiling diameter of less than 0.8 mm, said coiling diameter being in the range of 2 to 6 times the diameter of the resinous coating provided on the core member, said coil having an end portion thereof which exposes the stainless steel wires for contact with said living body.
Claim 3
Dependent Claim 18 words
The electrode of claim 1, wherein the diameter of said stainless steel wires is 10 to 20 microns.
Claim 4
Dependent Claim 17 words
The electrode of claim 1, wherein said plurality of wires comprises between 7 to 200 wire members.
Claim 5
Dependent Claim 21 words
The electrode of claim 1, wherein each stainless steel wire forming the core member is individually provided with a resinous coating.
Claim 6
Dependent Claim 27 words
The electrode of claim 1 wherein the core is twisted into a strand which is coiled in the opposite direction from the coil of the resinous coating.
Claim 7
Dependent Claim 23 words
The electrode of claim 1, wherein the strand comprises a plurality of layers twisted wire members coaxially disposed with respect to each other.

References Cited (Backward Citations)

US3333045A Cited
GB1257810A Cited
US3854002A Cited
JPS60108054A Cited
US4640983A Cited
JPS61217174A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1993-10-22 1994-04-23 1994-10-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1997-10-22 1998-04-23 1998-10-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2001-10-22 2002-04-23 2002-10-23 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag