Patent US2843939A successfully refreshed from Google Patents.
Patent US3699956A successfully refreshed from Google Patents.
US3699956A
Expired / Lapsed
US
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Percutaneous lead device
Assignee: Tecna Corp
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Filing: 1970-10-01
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Granted: 1972-10-24
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Expires: 1990-10-01
Abstract
Abstract A percutaneous lead device including an element for preventing bacterial infection caused by implanting the lead through the skin. This element extends below and along the skin surface and includes an antibacterial fluid reservoir coated with a diffusion-controlling layer which maintains the desired fluid release rate. A surface configuration on the reservoir and lead which is highly adherent to and completely permeated by ingrowing tissue provides a particularly effective bacterial seal.
Inventors
- 👤 Sotiris Kitrilakis
- 👤 Thomas C Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:39
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0247; A61L; A61L29/00; A61L29/14; A61L29/16; A61L2300/00; A61L2300/40; A61L2300/404; A61M2039/0285
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
24 words
A lead device as in claim 1 in which said reservoir comprises an antibacterial fluid-containing absorptive material carried within said chamber of the lead.
Claim 2
Dependent Claim
20 words
A percutaneous lead as in claim 2 in which said release means includes a permeable barrier covering said absorptive material.
Claim 3
Dependent Claim
25 words
A percutaneous lead device as in claim 3 in which said barrier is a layer extending over essentially the entire surface of the absorptive material.
Claim 4
Dependent Claim
33 words
A percutaneous lead device as in claim 4 in which said layer is covered by a material which is compatible with living tissue having a plurality of microcavities of predetermined size and shape.
Claim 5
Dependent Claim
21 words
A percutaneous lead device as in claim 4 in which said layer has a thickness of from 0.001 to 0.020 inch.
Claim 6
Dependent Claim
21 words
A percutaneous lead as in claim 4 in which said layer is capable of anchoring tissue ingrowth on its outer surface.
Claim 7
Dependent Claim
20 words
A percutaneous lead device as in claim 5 including elongated passages through said layer of a size sufficient for permeability.
Claim 8
Dependent Claim
186 words
A percutaneous device comprising an elongated hollow lead adapted to penetrate the skin, said lead including a portion having a flexible external surface compatible with skin, subcutaneous tissue and other tissue, said surface portion including a plurality of adjacent substantially discrete pockets having openings which face toward the tissue, the walls of said pocket being of such shape and size as to provide means to accommodate a number of living cells sufficient to provide anchoring but not so large as to prevent essentially normal transfer of nutrients to said living cells in said pockets from said adjacent area of tissue, antiseptic means including an antibacterial fluid reservoir for providing a controlled release of said fluid adjacent said portion of the lead, said reservoir including a walled chamber attached to said lead, said chamber walls provided with diffusion controlling passage means so that upon penetration of the skin by the device the fluid is released directly from said reservoir into the area around said reservoir portion over a prolonged period of time to prevent bacterial penetration into the tissue along the lead during ingrowth of said cells.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |