US3935864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endocardial electrode
Assignee: Individual
•
Filing: 1974-06-18
•
Granted: 1976-02-03
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Expires: 1994-06-18
Abstract
Abstract An endocardial electrode for effecting the intracardial stimulation of a heart, consisting of an elongated electrical conductor, which is provided with an electrical insulation, and an electrode head located at the distal end of the conductor which is proximate the heart, for the transmission of stimulative impulses to the heart through the applied electrode. The electrode head includes electrically conductive small-surfaced contact portions which are connected with the electrical conductor, and in which the individual contact portions are so constructed and arranged so as to form the edges of at least one hollow body or, respectively, a depression.
Inventors
- 👤 Hans Lagergren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:32
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056; A61N1/0565
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
98 words
Endocardial electrode for the intracardial stimulation of a heart, comprising an elongate electrical conductor; and electrical insulation encasing said conductor; and an electrode head being connected to said conductor at the end thereof proximate the heart for transmission of stimulative pulse to the heart upon insertion of said electrode, said electrode head having a plurality of electrically conductive contact portions connected to said conductor and defining spaces extending interiorly of said electrode head, said contact portions being shaped and positioned so as to form the external periphery-defining edges of at least one hollow body in said electrode head.
Claim 2
Dependent Claim
98 words
Endocardial electrode for the intracardial stimulation of a heart, comprising an elongate electrical conductor; and electrical insulation encasing said conductor; and an electrode head being connected to said conductor at the end thereof proximate the heart for transmission of stimulative pulse to the heart upon insertion of said electrode, said electrode head having a plurality of electrically conductive contact portions connected to said conductor and defining spaces extending interiorly of said electrode head, said contact portions being shaped and positioned so as to form the external periphery-defining edges of at least one hollow body in said electrode head.
Claim 3
Dependent Claim
17 words
Endocardial electrode as claimed in claim 1, said hollow body being a depression in said electrode head.
Claim 4
Dependent Claim
22 words
Endocardial electrode as claimed in claim 1, said contact portions having a collective surface area of up to 15 mm 2 .
Claim 5
Dependent Claim
16 words
Endocardial electrode as claimed in claim 3, said surface area being about 2 mm 2 .
Claim 6
Dependent Claim
17 words
Endocardial electrode as claimed in claim 1, said electrode head comprising an essentially cylindrical coarse-meshed wire basket.
Claim 7
Dependent Claim
24 words
Endocardial electrode as claimed in claim 5, said mesh having an encompassed area in the range of about 2 to 5 mm 2 .
Claim 8
Dependent Claim
41 words
Endocardial electrode as claimed in claim 5, said electrode head having the outermost end formed by the base of said wire basket, and an elongate electrical conductor being connected to the opening of said basket so as to close the latter.
Claim 9
Dependent Claim
22 words
Endocardial electrode as claimed in claim 5, comprising weight means being positioned interiorly of said electrode head for increasing the weight thereof.
Claim 10
Dependent Claim
21 words
Endocardial electrode as claimed in claim 8, said weight means comprising a rod extending centrally and axially of said wire basket.
Claim 11
Dependent Claim
18 words
Endocardial electrode as claimed in claim 1, each said contact portion being formed of electrically conductive wire material.
Claim 12
Dependent Claim
18 words
Endocardial electrode as claimed in claim 1, each said contact portion being formed of electrically conductive band material.
Claim 13
Dependent Claim
18 words
Endocardial electrode as claimed in claim 1, said electrode head being substantially cylindrical and star-shaped in transverse section.
Claim 14
Dependent Claim
24 words
Endocardial electrode as claimed in claim 12, the outer longitudinally extending edges of said star-shaped cylindrical electrode head comprising said electrically conductive contact portions.
Claim 15
Dependent Claim
29 words
Endocardial electrode as claimed in claim 13, said contact portions comprising the outer edges of said hollow body so as to define the outer contour of said electrode head.
Claim 16
Dependent Claim
21 words
Endocardial electrode as claimed in claim 1, said electrode head being essentially formed of a material having a high specific weight.
Claim 17
Dependent Claim
25 words
Endocardial electrode as claimed in claim 1, said contact portions being a band material in an intertwined configuration forming an essentially cylindrical basket-like electrode head.
Claim 18
Dependent Claim
22 words
Endocardial electrode as claimed in claim 16, said band material having a width in the range of about 0.01 to 1.0 mm.
Claim 19
Dependent Claim
16 words
Endocardial electrode as claimed in claim 17, said band material having a width of 0.2 mm.
Claim 20
Dependent Claim
22 words
Endocardial electrode as claimed in claim 13, the interstitial hollows between the outer longitudinally extending edges being formed of electrically insulating material.
Claim 21
Dependent Claim
23 words
Endocardial electrode as claimed in claim 13, the interstitial hollows between the outer longitudinally extending edges being formed of insulated electrically conductive material.
References Cited (Backward Citations)
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US3760812A
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Cited
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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) | 1979-02-02 | 1979-08-04 | 1980-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-02 | 1983-08-04 | 1984-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-02 | 1987-08-04 | 1988-02-03 | $7700.00 | Window Closed / Lapsed |