US6375671B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closure device for transcatheter operations
Assignee: Nipro Corp
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Filing: 2000-04-17
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Granted: 2002-04-23
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Expires: 2020-04-17
Abstract
Abstract A closure device for transcatheter operations includes a longitudinally elasticated fixing member ( 1 ) having a shape-restoring force and being provided with a relatively large-sized, first and second circular portion ( 11,12 ) at both ends thereof, and a closure membrane ( 2 ) attached to the first circular portion ( 11 ) and closing up a ring thereof. The first circular portion ( 11 ) is fixed by a connecting portion extending from the fixed circular portion and progressively decreasing in size toward the second circular portion. The second circular portion may be provided with a holding portion ( 13 ) as occasion demands.
Inventors
- 👤 Toshiki Kobayashi
- 👤 Yoshikazu Kishigami
- 👤 Katsuya Miyagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:03
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/0057; A61B17/12; A61B17/12022; A61B17/12099; A61B17/12109; A61B17/12122; A61B17/12131; A61B17/12168; A61B17/12172; A61B2017/00575; A61B2017/00592; A61B2017/00597; A61B2017/00606; A61B2017/00623; A61B2017/00831; A61B2017/00867; A61B2017/1205
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
182 words
A closure device for transcatheter operations, said closure device comprising: a single, longitudinally elasticated fixing wire, said fixing wire having a shape-restoring force, a first end, a second end, a connecting portion, said connecting portion progressively and continually decreasing in size from the first end of said wire to the second end of said wire; a first circular portion secured at the first end of said wire; a second circular portion secured at the second end of said wire, wherein at least said first circular portion is fixedly secured in a first ring and said connecting portion secures said first circular portion to said second circular portion, and wherein the second circular portion has a free end and the second circular portion includes a second ring provided on said free end, said second ring serving as a holding portion and is relatively smaller than said first ring; and a closure membrane attached to said first circular portion for closing said first ring, said connecting portion being extended from the fixed circular portion and progressively decreased in size toward the opposite circular portion.
Claim 2
Dependent Claim
182 words
A closure device for transcatheter operations, said closure device comprising: a single, longitudinally elasticated fixing wire, said fixing wire having a shape-restoring force, a first end, a second end, a connecting portion, said connecting portion progressively and continually decreasing in size from the first end of said wire to the second end of said wire; a first circular portion secured at the first end of said wire; a second circular portion secured at the second end of said wire, wherein at least said first circular portion is fixedly secured in a first ring and said connecting portion secures said first circular portion to said second circular portion, and wherein the second circular portion has a free end and the second circular portion includes a second ring provided on said free end, said second ring serving as a holding portion and is relatively smaller than said first ring; and a closure membrane attached to said first circular portion for closing said first ring, said connecting portion being extended from the fixed circular portion and progressively decreased in size toward the opposite circular portion.
Claim 3
Dependent Claim
18 words
The closure device according to claim 9, wherein the second circular portion is fixed in a second ring.
Claim 4
Dependent Claim
25 words
The closure device according to claim 2 , wherein the second ring of the second circular portion is closed up by a second closure membrane.
Claim 5
Dependent Claim
24 words
The closure device according to claim 1 , wherein the closure membrane is made of a fabric or non-woven fabric of a biocompatible material.
Claim 6
Dependent Claim
28 words
The closure device according to claim 4 , wherein the single fixing wire is made of a superelastic metal and is formed into a coil or zigzag shape.
Claim 7
Dependent Claim
38 words
The closure device according to claim 4 , wherein the single fixing wire is made of a shape-memory alloy having a transformation temperature ranging from 30 to 36° C. and is formed into a coil or zigzag shape.
References Cited (Backward Citations)
FR2641692A1
Cited
JPH07308331A
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US6063113A
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Cited
WO1998002100A1
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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) | 2005-04-22 | 2005-10-22 | 2006-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-22 | 2009-10-22 | 2010-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-22 | 2013-10-22 | 2014-04-23 | $7700.00 | Window Closed / Lapsed |