US5948015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical electrical lead
Assignee: Medtronic Inc
•
Filing: 1998-05-14
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Granted: 1999-09-07
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Expires: 2018-05-14
Abstract
Abstract A medical electrical lead having an electrode head with an internal lumen mounted to a proximal portion of the lead body and a rotatable fixation helix advanceable from the internal lumen. The helix is mounted to a rotatable shaft which is provided with a central shaft portion and circumferential shoulders proximal and distal to the central shaft portion. A seal is mounted in the lumen of the electrode head, encircling the shaft and C-shaped seal retainers are mounted in the lumen of the electrode head member proximal and distal to the seal.
Inventors
- 👤 Douglas N. Hess
- 👤 Richard D. Sandstrom
- 👤 Michael A. Ruff
- 👤 Rodica V. Ruta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:33
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/057; A61N1/0573
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends and carrying an elongated conductor therein; an electrode head member having an internal lumen, mounted to a proximal portion of the lead body; a shaft, having proximal and distal ends, rotatably mounted in the head member; a fixation helix, mounted to the distal end of the shaft; a seal, mounted in the lumen of the electrode head member, encircling the shaft; and C-shaped members mounted in the lumen of the electrode head member proximal and distal to the seal.
Claim 2
Dependent Claim
93 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends and carrying an elongated conductor therein; an electrode head member having an internal lumen, mounted to a proximal portion of the lead body; a shaft, having proximal and distal ends, rotatably mounted in the head member; a fixation helix, mounted to the distal end of the shaft; a seal, mounted in the lumen of the electrode head member, encircling the shaft; and C-shaped members mounted in the lumen of the electrode head member proximal and distal to the seal.
Claim 3
Dependent Claim
21 words
A lead according to claim 1, wherein the shaft is provided with circumferential shoulders proximal and distal to the C-shaped members.
Claim 4
Dependent Claim
23 words
A lead according to claim 2 wherein the conductor is rotatably mounted in the lead body and is coupled to the helix shaft.
Claim 5
Dependent Claim
23 words
A lead according to claim 1 wherein the conductor is rotatably mounted in the lead body and is coupled to the helix shaft.
Claim 6
Dependent Claim
15 words
A lead according to claim 1 wherein the C-shaped members are fabricated of radiopaque material.
Claim 7
Dependent Claim
21 words
A lead according to claim 5, wherein the shaft is provided with circumferential shoulders proximal and distal to the C-shaped members.
Claim 8
Dependent Claim
15 words
A lead according to claim 1 wherein the outer surface of the seal is tapered.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-09-06 | 2003-03-08 | 2003-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-09-06 | 2007-03-08 | 2007-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-09-06 | 2011-03-08 | 2011-09-07 | $7700.00 | Window Closed / Lapsed |