Patent CN1154582C successfully refreshed from Google Patents.
US4943298A
Expired / Lapsed
US
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Cerebral aneurysm clip
Assignee: FUJITA SHIGEKIYO 8-22 KITASHINZAIKE 1-CHOME HIMEJI-SHI HYOGO JAPAN
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Filing: 1989-06-02
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Granted: 1990-07-24
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Expires: 2009-06-02
Abstract
Abstract A cerebral aneurysm clip (1) composed of blade parts (2a, 2b) capable of clipping the root of a lump of cerebral aneurysm and a spring part (3) of imparting a clipping force to the said blade parts, which is characterized in that the said blade parts are made of a synthetic resin or ceramic.
Inventors
- 👤 Shigekiyo Fujita
- 👤 Toyokazu Kurushima
- 👤 Hiroaki Kuno
- 👤 Hiromitsu Hiraiwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:55
CPC Classifications
A; A61; A61L; A61L31/00; A61L31/12; A61L31/125; A61B; A61B17/00; A61B17/12; A61B17/122; A61B17/1227; A61L31/02; A61L31/026; A61L31/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
51 words
A clip for cerebral aneurysm comprising a means which is made of a ceramic and which has a function of clipping a root part of a lump of cerebral aneurysm and a spring means which has a function of imparting a power for clipping said root part to said clipping means.
Claim 2
Dependent Claim
51 words
A clip for cerebral aneurysm comprising a means which is made of a ceramic and which has a function of clipping a root part of a lump of cerebral aneurysm and a spring means which has a function of imparting a power for clipping said root part to said clipping means.
Claim 3
Dependent Claim
31 words
The clip for cerebral aneurysm as claimed in claim 1, in which the clipping means is made of a ceramic having an HN value in X-ray CT of 2500 or less.
Claim 4
Dependent Claim
30 words
The clip for cerebral aneurysm as claimed in claim 2, in which the ceramic is selected from the group consisting of alumina, AlN, sialon , silicon nitride and silicon carbide.
Claim 5
Dependent Claim
20 words
The clip for cerebral aneurysm as claimed in claim 3, in which the ceramic is alumina, AlN or silicon nitirde.
Claim 6
Dependent Claim
31 words
The clip for cerebral aneurysm as claimed in claim 2, in which the clipping means is made of a ceramic having an HN value in X-ray CT of 2000 or less.
Claim 7
Dependent Claim
23 words
The clip for cerebral aneurysm as claimed in claim 1, in which the spring means is made of a rubber or synthetic resin.
Claim 8
Dependent Claim
37 words
The clip for cerebral aneurysm as claimed in claim 6, in which the synthetic resin is selected from the group consisting of polyethylenes, polypropylenes, polystyrenes, methacrylic resins, epoxy resins, silicone resins, unsaturated polyester resins and fluorien resins.
Claim 9
Dependent Claim
24 words
The clip for cerebral aneurysm as claimed in claim 7, in which the synthetic resin is polymethyl methacrylate, polytetrafluoroethylene, silicone resin or polyether sulfone.
Claim 10
Dependent Claim
27 words
The clip for cerebral aneurysm as claimed in claim 8, in which the fiber is carbon fiber, alumina fiber, SiC fiber, glass fiber or high polymer fiber.
References Cited (Backward Citations)
JPS547788A
Cited
US4416266A
Cited
DE3302707A1
Cited
JPS598948A
Cited
US4671281A
Cited
FR2555952A1
Cited
JPS61205517A
Cited
US4706668A
Cited
US4777950A
Cited
US4765335A
Cited
US4834096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-23 | 1994-01-22 | 1994-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-23 | 1998-01-22 | 1998-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-23 | 2002-01-22 | 2002-07-24 | $7700.00 | Window Closed / Lapsed |