US5267573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guidewire extender
Assignee: Oakley Inc
•
Filing: 1992-11-13
•
Granted: 1993-12-07
•
Expires: 2012-11-13
Abstract
Abstract A guidewire extender particularly suited for use in percutaneous transluminal coronary angioplasty. A tubular connector member attaches to the proximal end of a steerable guidewire. A helical coil bonded to a male insertion segment of a proximal extension member contacts an inward depression on the tubular connector. The extension member mates with the tubular connector to extend the guidewire by rotating the extension member to advance the helical coil past the depression. Some axial play between the coupled components is possible. The extension member locks to the guidewire without special tools. Manufacture and assembly are simplified.
Inventors
- 👤 Scott M. Evans
- 👤 Vince Divino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:56
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M25/0905
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
153 words
A guidewire system, comprising: an extension section; a main guidewire section, one of which sections having a working portion, wherein a helical coil is secured to the outside of one of said sections, and a tube sized to receive said portion of said one of said sections upon which said helical coil is fixed is secured to another of said sections; and at least one inward protrusion on the interior of said tube which reduces the clearance within said tube to a distance greater than the diameter of said portion of said one of said sections to which said coil is fixed, yet less than the outer diameter of said helical coil, whereby said one of said sections may be rotated to advance said helical coil past said protrusion to lock said one of said sections to said other of said sections, yet permit said sections to freely axially rotate relative one another.
Claim 2
Dependent Claim
153 words
A guidewire system, comprising: an extension section; a main guidewire section, one of which sections having a working portion, wherein a helical coil is secured to the outside of one of said sections, and a tube sized to receive said portion of said one of said sections upon which said helical coil is fixed is secured to another of said sections; and at least one inward protrusion on the interior of said tube which reduces the clearance within said tube to a distance greater than the diameter of said portion of said one of said sections to which said coil is fixed, yet less than the outer diameter of said helical coil, whereby said one of said sections may be rotated to advance said helical coil past said protrusion to lock said one of said sections to said other of said sections, yet permit said sections to freely axially rotate relative one another.
Claim 3
Dependent Claim
28 words
A guidewire system as in claim 1, wherein said one of said sections is said extension section and said another of said sections is said main guidewire section.
Claim 4
Dependent Claim
17 words
A guidewire system as in claim 2, wherein said helical coil is soldered to said extension section.
Claim 5
Dependent Claim
17 words
A guidewire system as in claim 2, wherein said helical coil is brazed to said extension section.
Claim 6
Dependent Claim
17 words
A guidewire system as in claim 2, wherein said helical coil is welded to said extension section.
Claim 7
Dependent Claim
36 words
A guidewire system as in claim 1, wherein said one of said sections is constrained from farther advancement once said helical coil has traveled past said protrusion by said sections abutting one another which said tube.
Claim 8
Dependent Claim
41 words
A guidewire system as in claim 1, wherein said one of said sections is constrained from farther advancement once said helical coil has traveled past said protrusion by an outwardly tapered portion of said one of said sections abutting said tube.
Claim 9
Dependent Claim
32 words
A guidewire system as in claims 6 or 7, wherein said extension section may move a slight axial distance relative to said tube once said helical coil has traveled past said protrusion.
Claim 10
Dependent Claim
17 words
A guidewire system as in claim 8, wherein said axial distance is between 0.003 and 0.03 inches.
Claim 11
Dependent Claim
35 words
A guidewire system as in claim 1, wherein said tube further comprises an aperture located near a distal end for application of bonding material to rigidly join said tube to said another of said sections.
Claim 12
Dependent Claim
124 words
A guidewire system, comprising: an extension section, including a portion to which a member is secured; a main guidewire section; a tube sized to receive said portion of said extension section to which said member is secured and said main guidewire section; and at least one inward protrusion on the interior of said tube which reduces the clearance within aid tube to a distance greater than the diameter of said portion of said extension section to which said member is fixed, yet less than the outer diameter of said member, whereby said extension section may be rotated to advance said member past said protrusion to lock said extension section to said guidewire section, yet permit said sections to freely axially rotate relative one another.
Claim 13
Dependent Claim
124 words
A guidewire system, comprising: an extension section, including a portion to which a member is secured; a main guidewire section; a tube sized to receive said portion of said extension section to which said member is secured and said main guidewire section; and at least one inward protrusion on the interior of said tube which reduces the clearance within aid tube to a distance greater than the diameter of said portion of said extension section to which said member is fixed, yet less than the outer diameter of said member, whereby said extension section may be rotated to advance said member past said protrusion to lock said extension section to said guidewire section, yet permit said sections to freely axially rotate relative one another.
Claim 14
Dependent Claim
30 words
A guidewire system as in claim 11, wherein said extension section may move a slight axial distance relative to said guidewire section once said member has traveled past said protrusion.
Claim 15
Dependent Claim
17 words
A guidewire system as in claim 12, wherein said axial distance is between 0.003 and 0.03 inches.
References Cited (Backward Citations)
US4917103A
Cited
US4922923A
Cited
US5031636A
Cited
US4875489A
Cited
US4827941A
Cited
US5133364A
Cited
US4966163A
Cited
US5117838A
Cited
US5147317A
Cited
US5109867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-06 | 1997-06-07 | 1997-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-06 | 2001-06-07 | 2001-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-06 | 2005-06-07 | 2005-12-07 | $7700.00 | Window Closed / Lapsed |