US5520194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guide wire for medical purpose and manufacturing process of coil thereof
Assignee: Asahi Intecc Co Ltd
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Filing: 1993-12-07
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Granted: 1996-05-28
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Expires: 2013-12-07
Abstract
Abstract A guide wire for medical purposes having a proximal section and a distal section and formed by inserting all or a portion of a slender and flexible shaft into a coil and fixing the shaft to the coil, wherein the coil is a multiple-wire coil consisting of at least 2 wire rods, at least one of these wire rods is made of a material which is opaque against radioactive rays such as X ray, and a portion of the coil close to the distal section of the shaft is a single-wire coil consisting of only a wire rod made of the radiopaque material.
Inventors
- 👤 Naohiko Miyata
- 👤 Masashi Momota
- 👤 Kazuyuki Shimada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:27
CPC Classifications
B; B21; B21F; B21F15/00; B21F15/02; B21F15/06; A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; B21C; B21C37/00; B21C37/04; B21C37/042; B21F15/08; B21F35/00; B21F45/00; B21F45/008; A61M2025/09166; A61M2025/09175
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A guide wire for medical purposes comprising: a flexible shaft having a proximal section and a distal section; a non-multifiler single-wire coil comprising a single strand of wire rod surrounding at least a portion of the flexible shaft; said wire rod comprising an inner layer and an outer layer, said inner layer formed of a radiopaque material surrounding at least a portion of the distal section of the flexible shaft and a radiotransparent material surrounding nondistal portions of the flexible shaft, and said outer layer formed of a radiotransparent material.
Claim 2
Dependent Claim
90 words
A guide wire for medical purposes comprising: a flexible shaft having a proximal section and a distal section; a non-multifiler single-wire coil comprising a single strand of wire rod surrounding at least a portion of the flexible shaft; said wire rod comprising an inner layer and an outer layer, said inner layer formed of a radiopaque material surrounding at least a portion of the distal section of the flexible shaft and a radiotransparent material surrounding nondistal portions of the flexible shaft, and said outer layer formed of a radiotransparent material.
Claim 3
Dependent Claim
31 words
A guide wire for medical purposes according to claim 1, wherein the radiopaque material comprises an alloy having a main component selected from the group consisting of platinum, gold and tungsten.
Claim 4
Dependent Claim
16 words
A guide wire for medical purposes according to claim 1, wherein the radiopaque material comprises lead.
Claim 5
Dependent Claim
33 words
A guide wire for medical purposes according to claim 1, wherein the distal section of the flexible shaft comprises two portions which are joined in the axial direction and fixed to each other.
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) | 1999-05-28 | 1999-11-27 | 2000-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-28 | 2003-11-27 | 2004-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-28 | 2007-11-27 | 2008-05-28 | $7700.00 | Window Closed / Lapsed |