US5968087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-component lead body for medical electrical leads
Assignee: Medtronic Inc
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Filing: 1997-12-15
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Granted: 1999-10-19
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Expires: 2017-12-15
Abstract
Abstract A medical electrical lead having an elongated lead body carrying a conductor therein, the lead body being formed of an inner sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending helical ridges extending along its length, the ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve. A fixation helix may be mounted at the distal end of the lead body and a conductor, which is also rotatable relative to the lead body may be located within the inner, tubular sleeve. Conductors may also be located between the ridges of the inner sleeve, embedded in the outer sheath.
Inventors
- 👤 Douglas N. Hess
- 👤 Stanton D. Myrum
- 👤 Michael J. Ebert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:00
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/057; A61N1/0573; A61N1/18; A61N1/32; A61N1/38; A61N1/39; A61N1/3987
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
111 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends; a fixation helix mounted at the distal end of the lead body; and a conductor extending along the lead body; and wherein the lead body comprises an inner sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending helical ridges extending along its length, the helical ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve.
Claim 2
Dependent Claim
111 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends; a fixation helix mounted at the distal end of the lead body; and a conductor extending along the lead body; and wherein the lead body comprises an inner sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending helical ridges extending along its length, the helical ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve.
Claim 3
Dependent Claim
39 words
A lead according to claim 1 wherein the helix is rotatable relative to the lead body and is coupled to the conductor, which is also rotatable relative to the lead body and is located within the inner, tubular sleeve.
Claim 4
Dependent Claim
109 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends; and multiple conductors extending along the lead body; and wherein the lead body comprises an inner, tubular sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending helical ridges extending along its length, the ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve, the conductors located between adjacent ones of the helical ridges.
Claim 5
Dependent Claim
109 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends; and multiple conductors extending along the lead body; and wherein the lead body comprises an inner, tubular sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending helical ridges extending along its length, the ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve, the conductors located between adjacent ones of the helical ridges.
Claim 6
Dependent Claim
24 words
A lead according to claim 1 or claim 3 wherein the helical ridges of said inner sleeve vary in pitch along the sleeves length.
Claim 7
Dependent Claim
31 words
A lead according to claim 1 or claim 3 wherein said lead comprises a conductor embedded in the outer sheath, located between adjacent ones of the helical ridges of the sleeve.
Claim 8
Dependent Claim
109 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends; a fixation helix mounted at the distal end of the lead body; and a conductor extending along the lead body; and wherein the lead body comprises an inner, sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending ridges extending along its length, the ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve.
Claim 9
Dependent Claim
109 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends; a fixation helix mounted at the distal end of the lead body; and a conductor extending along the lead body; and wherein the lead body comprises an inner, sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending ridges extending along its length, the ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve.
Claim 10
Dependent Claim
39 words
A lead according to claim 6 wherein the helix is rotatable relative to the lead body and is coupled to the conductor, which is also rotatable relative to the lead body and is located within the inner, tubular sleeve.
Claim 11
Dependent Claim
107 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends; and multiple conductors extending along the lead body; and wherein the lead body comprises an inner, tubular sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending ridges extending along its length, the ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve, the conductors located between adjacent ones of the ridges.
Claim 12
Dependent Claim
107 words
A medical electrical lead, comprising: an elongated lead body having proximal and distal ends; and multiple conductors extending along the lead body; and wherein the lead body comprises an inner, tubular sleeve of a first, relatively more rigid plastic and an outer sheath of a second, relatively less rigid plastic, the inner sleeve having a tubular portion and having outwardly extending ridges extending along its length, the ridges having lateral wall surfaces extending radially from the tubular portion and an outer sheath over the inner sleeve and in contact with the lateral wall surfaces of the inner sleeve, the conductors located between adjacent ones of the ridges.
Claim 13
Dependent Claim
30 words
A lead according to claim 6 or claim 8 wherein said lead comprises a conductor embedded in the outer sheath, located between adjacent ones of the ridges of the sleeve.
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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) | 2002-10-18 | 2003-04-19 | 2003-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-10-18 | 2007-04-19 | 2007-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-10-18 | 2011-04-19 | 2011-10-19 | $7700.00 | Window Closed / Lapsed |