Patent US6539984B2 successfully refreshed from Google Patents.
Patent US4416266A successfully refreshed from Google Patents.
US4416266A
Expired / Lapsed
US
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Medical clip
Assignee: United States, NATIONA AERONAUTICS AND SPACE ADMINISTRATION, Administrator of
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Filing: 1981-05-15
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Granted: 1983-11-22
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Expires: 2001-05-15
Abstract
Abstract An X-ray transparent and biological inert medical clip for treating aneurisms and the like and process for producing same wherein a graphite reinforced composite film 15, 16, 20 and 21 (FIGS. 1a-1d) is molded into a unitary structure having a pair of "hourglass" like cavities 30, 31 (FIG. 2) hinged together (33) with a pair of jaws 27 and 28 for grasping the aneurism extending from the wall of one cavity and a silicone rubber pellet 35 (FIG. 3) disposed in the other cavity to exert a spring force through the hinge area 33 to normally bias the jaws into contact with each other.
Inventors
- 👤 Robert M. Baucom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:14
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/40; B29C70/42; B29C70/44; A; A61; A61B; A61B17/00; A61B17/12; A61B17/122; A61B17/1227; A61B2017/00526; A61B2017/00831; A61B2017/00902; B29C43/00; B29C43/02; B29C43/10; B29C43/12; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44897
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
219 words
A medical clip for use in treating aneurisms and the like in a living animal and having the inherent physical property characteristic of being essentially transparent to X-rays, comprising: a unitary structure terminating at one end with a pair of elongated jaws having essentially flat abutting surfaces and the other end with a broken circular segment; an intermediate segment integrally disposed between said elongated jaws and said broken circular end and formed of a pair of semicircular portions extending from said elongated jaws; a connection area between the said pair of semicircular portions and said broken circular segment and disposed substantially 180° relative to said elongated jaws; means provided on said connection area serving as a hinge connection for said unitary structure so as to permit opening and closing of said pair of elongated jaws; said hinge connection joining said broken circular segment and said intermediate segment to form a pair of "hourglass" cavities; a silicone rubber insert being disposed within the cavity formed by said broken circle segment to serve as a spring force to pivotally contract said elongated jaws against each other through said hinge connection; and said unitary structure being formed of a molded composite material having the inherent physical property characteristic of being biologically inert, transparent to X-rays and capable of withstanding conventional sterilization procedures.
Claim 2
Dependent Claim
219 words
A medical clip for use in treating aneurisms and the like in a living animal and having the inherent physical property characteristic of being essentially transparent to X-rays, comprising: a unitary structure terminating at one end with a pair of elongated jaws having essentially flat abutting surfaces and the other end with a broken circular segment; an intermediate segment integrally disposed between said elongated jaws and said broken circular end and formed of a pair of semicircular portions extending from said elongated jaws; a connection area between the said pair of semicircular portions and said broken circular segment and disposed substantially 180° relative to said elongated jaws; means provided on said connection area serving as a hinge connection for said unitary structure so as to permit opening and closing of said pair of elongated jaws; said hinge connection joining said broken circular segment and said intermediate segment to form a pair of "hourglass" cavities; a silicone rubber insert being disposed within the cavity formed by said broken circle segment to serve as a spring force to pivotally contract said elongated jaws against each other through said hinge connection; and said unitary structure being formed of a molded composite material having the inherent physical property characteristic of being biologically inert, transparent to X-rays and capable of withstanding conventional sterilization procedures.
Claim 3
Dependent Claim
21 words
The medical clip of claim 1 wherein said molded composite structure is constructed from plies of graphite fiber reinforced polysulfone film.
Claim 4
Dependent Claim
41 words
The medical clip of claim 1 wherein said graphite fiber reinforced polysulfone film is of a thickness range of 0.006 to 0.010 inch and at least two ply thickness of said film is provided in all areas of the clip structure.
References Cited (Backward Citations)
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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) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |