Patent US2324931A successfully refreshed from Google Patents.
Patent US5209730A successfully refreshed from Google Patents.
US5209730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for placement of a balloon dilatation catheter across a stenosis and apparatus therefor
Assignee: Boston Scientific Scimed Inc
•
Filing: 1989-12-19
•
Granted: 1993-05-11
•
Expires: 2009-12-19
Abstract
Abstract An over-the-wire balloon catheter has a radiopaque marker thereon at a known distance from a distal end of the catheter. An elongated flexible guide wire has a plurality of longitudinally spaced radiopaque markers on a distal portion thereof, with adjacent markers on the guide wire being longitudinally spaced by a distance equal to the known distance between the distal end of the catheter and its radiopaque marker. The guide wire is advanced through an artery until one of its markers is positioned at a desired location relative to a stenosis. Subsequently, the balloon catheter is advanced over the guide wire until the radiopaque marker of the catheter is in a predetermined position relationship to the radiopaque marker of the guide wire which has aligned on the stenosis. The cooperating radiopaque markers of the guide wire and catheter thus allow the balloon member of the catheter to be positioned relative to the stenosis in a timely fashion without the need to constantly inject fluoroscopic dye to view the stenosis.
Inventors
- 👤 Daniel J. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:22
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0108; A61M25/09; A61M25/10; A61M25/104
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
78 words
For use in combination with an over-the-wire balloon catheter having a reference radiopaque marker thereon at a known distance from a distal end of the catheter, the improvement which comprises: an elongated flexible guide wire having a plurality of longitudinally spaced radiopaque markers on a distal portion thereof, with adjacent markers on the guide wire being longitudinally spaced by a distance equal to the known distance between the distal end of the catheter and its reference radiopaque marker.
Claim 2
Dependent Claim
78 words
For use in combination with an over-the-wire balloon catheter having a reference radiopaque marker thereon at a known distance from a distal end of the catheter, the improvement which comprises: an elongated flexible guide wire having a plurality of longitudinally spaced radiopaque markers on a distal portion thereof, with adjacent markers on the guide wire being longitudinally spaced by a distance equal to the known distance between the distal end of the catheter and its reference radiopaque marker.
Claim 3
Dependent Claim
18 words
The guide wire of claim 1 wherein a proximal portion of the guide wire is a solid wire.
Claim 4
Dependent Claim
19 words
The guide wire of claim 2, wherein the distal portion of the guide wire is 25 cm in length.
Claim 5
Dependent Claim
20 words
The guide wire of claim 1 wherein the distal portion of the guide wire is defined by a coil spring.
Claim 6
Dependent Claim
23 words
The guide wire of claim 1 wherein the distal portion of the guide wire has a radiopaque distal tip 1.5 cm in length.
Claim 7
Dependent Claim
33 words
The guide wire of claim 5 wherein the distance between adjacent markers on the guide wire is 1.5 cm, a first marker located 1.5 cm from a proximal end of the distal tip.
Claim 8
Dependent Claim
15 words
The guide wire of claim 1 wherein the distance between adjacent markers is 1.5 cm.
Claim 9
Dependent Claim
34 words
The guide wire of claim 1 wherein the guide wire has a radiopaque tip marker, and wherein the width of each marker on the guide wire, other than the tip marker, is 1 mm.
Claim 10
Independent Claim
112 words
A method of positioning a balloon catheter in an artery by use of fluoroscopy, the balloon catheter carrying a radiopaque marker at a known distance from a distal end thereof, comprising the steps of: advancing a guide wire having a plurality of radiopaque markers at spaced intervals adjacent its distal end to a desired position relative to a stenosis, the marker interval spacing having a predetermined relationship to the distance of the catheter marker from the catheter distal end; and advancing a balloon catheter over the guide wire until the radiopaque marker of the balloon catheter is in a predetermined positional relationship to one of the radiopaque markers of the guide wire.
Claim 11
Independent Claim
112 words
A method of positioning a balloon catheter in an artery by use of fluoroscopy, the balloon catheter carrying a radiopaque marker at a known distance from a distal end thereof, comprising the steps of: advancing a guide wire having a plurality of radiopaque markers at spaced intervals adjacent its distal end to a desired position relative to a stenosis, the marker interval spacing having a predetermined relationship to the distance of the catheter marker from the catheter distal end; and advancing a balloon catheter over the guide wire until the radiopaque marker of the balloon catheter is in a predetermined positional relationship to one of the radiopaque markers of the guide wire.
Claim 12
Independent Claim
150 words
A method of positioning a balloon catheter in an artery by use of fluoroscopy, comprising the steps of: advancing a guide wire having a plurality of radiopaque markers at spaced intervals adjacent its distal end to a desired position relative to a stenosis; and advancing a balloon catheter carrying a radiopaque marker over the guide wire until the radiopaque marker of the balloon catheter is in a predetermined positional relationship to one of the radiopaque markers of the guide wire; maintaining the guide wire in position relative to the stenosis; withdrawing the balloon catheter off of the guide wire, from a proximal end of the guide wire; and advancing a second balloon catheter carrying a radiopaque marker over the guide wire, from the proximal end of the guide wire, until the second balloon catheter is in a predetermined positional relationship to one of the radiopaque markers of the guide wire.
Claim 13
Independent Claim
150 words
A method of positioning a balloon catheter in an artery by use of fluoroscopy, comprising the steps of: advancing a guide wire having a plurality of radiopaque markers at spaced intervals adjacent its distal end to a desired position relative to a stenosis; and advancing a balloon catheter carrying a radiopaque marker over the guide wire until the radiopaque marker of the balloon catheter is in a predetermined positional relationship to one of the radiopaque markers of the guide wire; maintaining the guide wire in position relative to the stenosis; withdrawing the balloon catheter off of the guide wire, from a proximal end of the guide wire; and advancing a second balloon catheter carrying a radiopaque marker over the guide wire, from the proximal end of the guide wire, until the second balloon catheter is in a predetermined positional relationship to one of the radiopaque markers of the guide wire.
References Cited (Backward Citations)
US3605750A
Cited
US3847157A
Cited
US4027659A
Cited
US4279252A
Cited
US4657024A
Cited
US4469483A
Cited
US4554929A
Cited
US4538622A
Cited
US4577637A
Cited
WO1986006285A1
Cited
US4641654A
Cited
US4671291A
Cited
US4946466A
Cited
US4922924A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |