US4579120A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strain relief for percutaneous lead
Assignee: Pacesetter Inc
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Filing: 1985-01-29
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Granted: 1986-04-01
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Expires: 2005-01-29
Abstract
Abstract A member and method for anchoring and relieving the strain on a flexible, percutaneous lead which exits the body of a patient includes a flexible, elastomeric disc having a surface for contacting and conforming to the body of the patient. The surface is adhesively attached to the body at the location at which the lead exits the body. The opposite surface of the disc includes a bulbous shaped head. A passage extends through the adhesive, the disc and the head for snugly receiving the lead to extend therethrough. A slit may be provided in the disc between its perimeter and the passage for opening the disc to receive the lead in the passage and/or to remove the lead from the passage.
Inventors
- 👤 David C. MacGregor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:54
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M2025/0266; A61M2025/0273; Y; Y10; Y10S; Y10S128/00; Y10S128/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
239 words
A system for anchoring and relieving strain on a flexible percutaneous lead which exits the body of a patient, comprising: a one-piece molded retaining member including a stem portion of reduced diameter, a flexible disc portion of greater diameter at one end of said stem portion, and a bulbous head portion at the other end of said stem portion, said stem and bulbous portions being generally coaxial and perpendicular to said disc portion, said disc portion being generally flexible and having a generally flat exterior surface for contacting and conforming to the exterior of the patient's body adjacent the exit point of the percutaneous lead; said flexible retaining member having an internal passage of substantially constant cross section extending longitudinally within said stem, disc and head portions of said retaining member, said passages being dimensioned to snuggly receive the percutaneous lead; an adhesive layer on said exterior surface of said disc portion for adhering said retaining member to the body; said bulbous head portion having a diameter greater than that of said stem portion such that said head and disc portions together define an annular recess region encircling the exterior of said stem portion; and compression means within said annular recess region and surrounding said stem portion for compressing said stem portion radially inwardly such that said passage is constricted around the lead whereby movement of the lead within the passage is restrained when said stem portion is compressed.
Claim 2
Independent Claim
239 words
A system for anchoring and relieving strain on a flexible percutaneous lead which exits the body of a patient, comprising: a one-piece molded retaining member including a stem portion of reduced diameter, a flexible disc portion of greater diameter at one end of said stem portion, and a bulbous head portion at the other end of said stem portion, said stem and bulbous portions being generally coaxial and perpendicular to said disc portion, said disc portion being generally flexible and having a generally flat exterior surface for contacting and conforming to the exterior of the patient's body adjacent the exit point of the percutaneous lead; said flexible retaining member having an internal passage of substantially constant cross section extending longitudinally within said stem, disc and head portions of said retaining member, said passages being dimensioned to snuggly receive the percutaneous lead; an adhesive layer on said exterior surface of said disc portion for adhering said retaining member to the body; said bulbous head portion having a diameter greater than that of said stem portion such that said head and disc portions together define an annular recess region encircling the exterior of said stem portion; and compression means within said annular recess region and surrounding said stem portion for compressing said stem portion radially inwardly such that said passage is constricted around the lead whereby movement of the lead within the passage is restrained when said stem portion is compressed.
Claim 3
Dependent Claim
31 words
A lead anchoring system as defined in claim 1 wherein said compression means comprise a thread-like member disposed around and in contact with said stem portion within said annular recess region.
Claim 4
Dependent Claim
17 words
A lead anchoring system as defined in claim 2 wherein said adhesive layer includes an antibiotic therein.
Claim 5
Dependent Claim
46 words
A lead anchoring system as defined in claim 3 wherein said disc portion includes a radiallyextending slit extending from a point on the perimeter of said disc portion to said passage to enable said disc portion to be positioned around or removed from the percutaneous lead.
Claim 6
Dependent Claim
28 words
A lead anchoring system as defined in claim 4 wherein said thread-like member comprises a segment of suture constrictingly tied around said stem portion within said annular region.
Claim 7
Dependent Claim
19 words
A lead anchoring system as defined in claim 5 wherein said retaining member is formed of an elastomeric polymer.
Claim 8
Dependent Claim
16 words
A lead anchoring system as defined in claim 6 wherein said disc portion is substantially circular.
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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) | 1989-03-31 | 1989-09-30 | 1990-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-31 | 1993-09-30 | 1994-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-31 | 1997-09-30 | 1998-04-01 | $7700.00 | Window Closed / Lapsed |