US4401126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endocardial, implantable lead for pacemaker
Assignee: Individual
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Filing: 1980-06-13
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Granted: 1983-08-30
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Expires: 2000-06-13
Abstract
Abstract An endocardial, implantable lead (1) for connection with an implantable pacemaker comprises an electrical conductor (3) adapted, via at least one electrode (5) connected thereto and in contact with the inner wall of the right auricle (AD), to transfer stimulating pulses to the heart or collect heart pulses from the heart. The lead (1) is spring-biased along a predetermined portion (8, 9) of its length to assume a curved shape (α), which predetermined portion contains the electrodes (5) and is adapted to be located in the heart auricle and bear against the inner wall thereof. A withdrawable relatively stiff wire (10) is adapted for straightening of the curved shape of the predetermined portion (8, 9) before and during insertion of the electrodes (5) in the auricle. l
Inventors
- 👤 Bertil Reenstierna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:41
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
165 words
An endocardial, implantable lead for connection with an implantable pacemaker, said lead comprising a predetermined portion of the lead (1) including a helical coil portion (8), and a curved portion (9) connected to said helical coil portion, an electrical conductor (3) in the lead in said predetermined portion, at least one electrode (5) connected to said electrical conductor and on said curved portion in a position adapted for contact with the inner wall of a heart auricle to transfer stimulating pulses to the heart or collect heart pulses from the heart, said curved portion being biased in its curved shape to bear against the inner wall of the heart auricle along a substantial portion of its length where said at least one electrode is located, said helical coil portion having a helical shape rising in the longitudinal direction of the lead to form an open coil in a manner to absorb compressive forces exerted on either side of the general plane of said coil portion.
Claim 2
Dependent Claim
165 words
An endocardial, implantable lead for connection with an implantable pacemaker, said lead comprising a predetermined portion of the lead (1) including a helical coil portion (8), and a curved portion (9) connected to said helical coil portion, an electrical conductor (3) in the lead in said predetermined portion, at least one electrode (5) connected to said electrical conductor and on said curved portion in a position adapted for contact with the inner wall of a heart auricle to transfer stimulating pulses to the heart or collect heart pulses from the heart, said curved portion being biased in its curved shape to bear against the inner wall of the heart auricle along a substantial portion of its length where said at least one electrode is located, said helical coil portion having a helical shape rising in the longitudinal direction of the lead to form an open coil in a manner to absorb compressive forces exerted on either side of the general plane of said coil portion.
Claim 3
Dependent Claim
30 words
A lead as claimed in claim 1, further characterized by the major plane of said coil portion forming an angle of substantially 45° with the longitudinal planes of the lead.
Claim 4
Dependent Claim
68 words
A lead as claimed in claim 1 further characterized in that the bias of said curved portion is generated by at least one of a tubular member (6, or 7) of an elastomer, which includes silicone rubber, which of said tubular members is concentric with said electrical conductor (3) but leaves said at least one electrode (5) free for contact with the inner wall of the auricle (AD).
Claim 5
Dependent Claim
46 words
A lead as claimed in claim 1, further characterized by an elongated means in releasable positive connection with said predetermined portion and having rigidity to counteract biased forces of said predetermined portion to permit insertion of said portion in the heart in a substantially straightened state.
Claim 6
Dependent Claim
40 words
A lead as claimed in claim 4 further characterized in that said conductor (3) is helically wound and that said elongated means (10) is a metal wire which is slidably arranged in an opening through said helically wound conductor (3).
Claim 7
Dependent Claim
47 words
A lead as claimed in claim 5, further characterized in that the lead contains a second electrical conductor (2) which extends past said first mentioned conductor by a length (β) which contains a second electrode (4) arranged to contact the inner wall of a heart ventricle (VD).
Claim 8
Dependent Claim
37 words
A lead as claimed in claim 6, characterized in that said conductors (2, 3) are coaxial and insulated by tubular members (6, 7), the auricle at least one electrode (5) being connected to the outer conductor (3).
Claim 9
Dependent Claim
29 words
A lead as claimed in any one of claims 6 or 7, characterized in that the metal wire (10) also serves as a guide for the ventricle electrode (4).
Claim 10
Dependent Claim
36 words
A lead as claimed in claim 1 characterized by said at least one electrode including additional electrodes, said electrodes being annular elements spaced apart along a substantial length of the curvature (α) of said curved portion.
Claim 11
Dependent Claim
63 words
A lead as claimed in claim 1, further characterized in that the shape of said substantial portion of the length of the curvature of said predetermined portion generally corresponds to the curvature of the inner wall of the auricle (AD) in a longitudinal section thereof, from approximately the mouth of the superior vena cava (VCS) in the auricle to the tricuspid valves (TK).
Claim 12
Dependent Claim
79 words
A lead as claimed in claims 1 or 10 characterized in that the curvature comprises, in turn as viewed towards the distal end of the lead, a rising helical coil portion (8) of slightly larger transverse dimension than the transverse dimension of the mouth of the superior vena cava (VCS) in the auricle (AD), and a curved portion (9) gently connecting onto the coil and including the substantial portion of the length of curvature (α) of said curved portion.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |