Patent US4932409A successfully refreshed from Google Patents.
US4932409A
Expired / Lapsed
US
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Seal element in an implantable medical apparatus
Assignee: Pacesetter AB
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Filing: 1989-04-21
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Granted: 1990-06-12
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Expires: 2009-04-21
Abstract
Abstract A seal element for an opening in an implantable medical apparatus, which can be penetrated by a tool and which maintains a hermetic seal after removal of the tool, is in the form of a ring of resilient material, initially having a ring opening with the wall thickness of the ring being larger than the radius of the ring opening. The ring can be turned inside-out, whereby the ring opening is closed. The placement of the seal element in the opening in the implantable medical apparatus maintains the opening closed to form a seal, but permits insertion of a tool therethrough.
Inventors
- 👤 Jakub Hirschberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:48
CPC Classifications
B; B65; B65D; B65D51/00; A; A61; A61N; A61N1/00; A61N1/18; A61N1/32; A61N1/36; A61N1/372; A61N1/375; A61N1/3752; H; H01; H01R; H01R4/00; H01R4/28; H01R4/30; H01R4/36
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
An element for sealing an opening in an implantable medical apparatus comprising: a ring consisting of resilient material and having an outer diameter and an inner diameter, said inner diameter defining a ring opening having a radius, and said inner diameter and said outer diameter defining a ring wall therebetween having a cross-section and a thickness, said thickness being larger than said radius of said ring opening and said cross section having a shape so that when said ring is turned inside-out said ring opening is tightly closed to form a liquid seal centrally penetrable by an instrument without rupturing said ring, and the inside-out ring is adapted to the received and held in said opening in said implantable medical device.
Claim 2
Dependent Claim
121 words
An element for sealing an opening in an implantable medical apparatus comprising: a ring consisting of resilient material and having an outer diameter and an inner diameter, said inner diameter defining a ring opening having a radius, and said inner diameter and said outer diameter defining a ring wall therebetween having a cross-section and a thickness, said thickness being larger than said radius of said ring opening and said cross section having a shape so that when said ring is turned inside-out said ring opening is tightly closed to form a liquid seal centrally penetrable by an instrument without rupturing said ring, and the inside-out ring is adapted to the received and held in said opening in said implantable medical device.
Claim 3
Dependent Claim
23 words
An element as claimed in claim 1, wherein said ring has a cross section decreasing from said inner diameter to said out diameter.
Claim 4
Dependent Claim
21 words
An element as claimed in claim 1, wherein said ring has a cross section which is a portion of an oval.
Claim 5
Dependent Claim
15 words
An element as claimed in claim 1, wherein said ring has a T-shaped cross section.
Claim 6
Dependent Claim
15 words
An element as claimed in claim 1, wherein said ring has a V-shaped cross section.
Claim 7
Dependent Claim
13 words
An element as claimed in claim 1, wherein said ring has triangular cross-section.
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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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |