US5377690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guidewire with round forming wire
Assignee: CR Bard Inc
•
Filing: 1993-02-09
•
Granted: 1995-01-03
•
Expires: 2013-02-09
Abstract
Abstract A guidewire including a core wire extending into a lumen of a helical coil and having a proximal end of the helical coil fixedly attached thereto. At least one round forming wire is fixedly attached to a distal region of the core wire and extends through the lumen of the helical coil. A rounded protrusion is provided at a distal end of the helical coil with the round forming wire(s) and the helical coil fixedly attached thereto.
Inventors
- 👤 William A. Berthiaume
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:39
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M2025/09058; A61M2025/09083; A61M2025/09175
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
118 words
A guidewire, comprising: a helical coil having a proximal end, a distal end, and a lumen; a core wire having a distal region extending into a lumen of said helical coil and having a proximal end of said helical coil fixedly attached to said core wire; a plurality of cylindrical round forming wires fixedly attached to said distal region of said core wire and extending through said lumen of said helical coil; and a protrusion provided at said distal end of said helical coil with said plurality of round cylindrical forming wires and said helical coil fixedly attached thereto; whereby said plurality of round cylindrical forming wires provides both increased tensile strength and decreased stiffness to the guidewire.
Claim 2
Dependent Claim
118 words
A guidewire, comprising: a helical coil having a proximal end, a distal end, and a lumen; a core wire having a distal region extending into a lumen of said helical coil and having a proximal end of said helical coil fixedly attached to said core wire; a plurality of cylindrical round forming wires fixedly attached to said distal region of said core wire and extending through said lumen of said helical coil; and a protrusion provided at said distal end of said helical coil with said plurality of round cylindrical forming wires and said helical coil fixedly attached thereto; whereby said plurality of round cylindrical forming wires provides both increased tensile strength and decreased stiffness to the guidewire.
Claim 3
Dependent Claim
25 words
A guidewire in accordance with claim 1, wherein said plurality of round forming wires are fixedly attached to said core wire by a brazed joint.
Claim 4
Dependent Claim
28 words
A guidewire in accordance with claim 1, wherein said protrusion is formed by melting said helical coil and said plurality of round forming wires into a rounded tip.
Claim 5
Dependent Claim
24 words
A guidewire in accordance with claim 1, wherein said helical coil is fixedly attached to said core wire by at least one brazed joint.
Claim 6
Dependent Claim
23 words
A guidewire in accordance with claim 1, wherein said helical coil is fixedly attached to said core wire at a tapered section thereof.
Claim 7
Dependent Claim
27 words
A guidewire in accordance with claim 5, wherein said helical coil is fixedly attached to said core wire by a brazed joint at a proximal end thereof.
Claim 8
Dependent Claim
21 words
A guidewire in accordance with claim 1, wherein individual coils of said helical coil are expanded along a partial length thereof.
References Cited (Backward Citations)
US3528406A
Cited
US3452742A
Cited
US3552384A
Cited
US3521620A
Cited
US3631848A
Cited
US3789841A
Cited
US3757768A
Cited
US3749086A
Cited
US3906938A
Cited
US4003369A
Cited
US4080706A
Cited
US4020829A
Cited
US4215703A
Cited
EP0014424A1
Cited
US4456017A
Cited
US4554929A
Cited
USRE33911E
Cited
US4548206A
Cited
US4925445A
Cited
US4538622A
Cited
US4619274A
Cited
US4748986A
Cited
US4724846A
Cited
US4721117A
Cited
US4798598A
Cited
US4867173A
Cited
US4854330A
Cited
US4748982A
Cited
US4813434A
Cited
US4815478A
Cited
US4757827A
Cited
US4811743A
Cited
US4846193A
Cited
US4832047A
Cited
US4846186A
Cited
US4873983A
Cited
US4971490A
Cited
US4884579A
Cited
US4940062A
Cited
US4998917A
Cited
US4917104A
Cited
US5067489A
Cited
US4984581A
Cited
US4917666A
Cited
US5065769A
Cited
US4886067A
Cited
US4921482A
Cited
US4998916A
Cited
US5037391A
Cited
US4966163A
Cited
US4922924A
Cited
US4964409A
Cited
US4953553A
Cited
US5055109A
Cited
US5060660A
Cited
US5095915A
Cited
US5069217A
Cited
US5040543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-01-02 | 1998-07-04 | 1999-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-01-02 | 2002-07-04 | 2003-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-01-02 | 2006-07-04 | 2007-01-03 | $7700.00 | Window Closed / Lapsed |