US5498250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catheter guide wire with multiple radiopacity
Assignee: Boston Scientific Scimed Inc
•
Filing: 1994-05-18
•
Granted: 1996-03-12
•
Expires: 2014-05-18
Abstract
Abstract An apparatus and method for a thin, flexible catheter guide wire having portions of uniform and tapering diameters, a helical coil of a first radiopacity encasing or covering the distal end of the wire, and at least one additional wire cover of a lubricous material which is formed to be radiopaque but which has a radiopacity different than that of the helical coil. This improved device enables the use of an improved method of placement with the use of fluoroscopy to steer and locate the guide wire, and thus the catheter ultimately placed over the guide wire, at a precise situs within the body.
Inventors
- 👤 Richard R. Prather
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M2025/09166; A61M2025/09175
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
106 words
In a guide wire apparatus having a length of flexible wire with proximal and distal ends, a tip at the distal end of the guide wire, a first wire covering adjacent the tip and having a first radiopacity, and further wire coverings including at least a second wire covering placed intermediate the first wire covering and the proximal end of the guide wire, the improvement comprising: a. the second wire covering including a sleeve, the sleeve including a mixture of a polymer and a radiopaque metal loading the second wire covering having a second radiopacity; and b. the second radiopacity being unequal to the first radiopacity.
Claim 2
Dependent Claim
106 words
In a guide wire apparatus having a length of flexible wire with proximal and distal ends, a tip at the distal end of the guide wire, a first wire covering adjacent the tip and having a first radiopacity, and further wire coverings including at least a second wire covering placed intermediate the first wire covering and the proximal end of the guide wire, the improvement comprising: a. the second wire covering including a sleeve, the sleeve including a mixture of a polymer and a radiopaque metal loading the second wire covering having a second radiopacity; and b. the second radiopacity being unequal to the first radiopacity.
Claim 3
Dependent Claim
17 words
The improved apparatus of claim 1 in which the second radiopacity is less than the first radiopacity.
Claim 4
Dependent Claim
17 words
The improved apparatus of claim 1 in which the second radiopacity is greater than the first radiopacity.
Claim 5
Dependent Claim
21 words
The improved apparatus of claim 1 in which the further wire coverings each have a radiopacity different from the first radiopacity.
Claim 6
Dependent Claim
24 words
The improved apparatus of claim 4 in which the radiopacity of each of the further wire coverings differs from every other wire covering radiopacity.
Claim 7
Independent Claim
38 words
The apparatus of claims 1, 2 or 3 in which the polymer sleeve of the second wire covering has a load mixture of a radiopaque metal selected from the group consisting of bismuth, tungsten, platinum or barium sulfate.
Claim 8
Dependent Claim
16 words
The apparatus of claim 6 in which the load mixture is in the range of 60-70%.
Claim 9
Independent Claim
37 words
The apparatus of claims 1, 4 or 5 in which the further wire coverings comprise polymer sleeves mounted to the guide wire and made of a material including a load of a mixture of a radiopaque metal.
Claim 10
Dependent Claim
16 words
The apparatus of claim 8 in which the load mixture is in the range of 60-70%.
Claim 11
Dependent Claim
95 words
The improved method of fluoroscopic placement of a catheter guide wire comprising the steps of: a. mounting a first wire covering adjacent a distal end of the guide wire; b. mounting at least a second wire covering intermediate the first covering and a proximal end of the guide wire, the second wire covering including a sleeve, the sleeve including a mixture of a polymer and a radiopaque metal loading. c. providing the first wire covering with a first radiopacity; and d. providing the second wire covering with a second radiopacity different than the first radiopacity.
Claim 12
Dependent Claim
95 words
The improved method of fluoroscopic placement of a catheter guide wire comprising the steps of: a. mounting a first wire covering adjacent a distal end of the guide wire; b. mounting at least a second wire covering intermediate the first covering and a proximal end of the guide wire, the second wire covering including a sleeve, the sleeve including a mixture of a polymer and a radiopaque metal loading. c. providing the first wire covering with a first radiopacity; and d. providing the second wire covering with a second radiopacity different than the first radiopacity.
Claim 13
Dependent Claim
104 words
The improved method of fluoroscopic placement of a catheter guide wire comprising the steps of: a. mounting a first wire covering adjacent a distal end of the guide wire; b. mounting a plurality of further wire coverings intermediate the first covering and a proximal end of the guide wire, each further wire covering including a sleeve, the sleeve including a mixture of a polymer and a radiopaque metal loading; c. providing the first wire covering with a first radiopacity; d. providing each of the further wire coverings with a different radiopacity; and e. making each of the different radiopacities different than the first radiopacity.
Claim 14
Dependent Claim
104 words
The improved method of fluoroscopic placement of a catheter guide wire comprising the steps of: a. mounting a first wire covering adjacent a distal end of the guide wire; b. mounting a plurality of further wire coverings intermediate the first covering and a proximal end of the guide wire, each further wire covering including a sleeve, the sleeve including a mixture of a polymer and a radiopaque metal loading; c. providing the first wire covering with a first radiopacity; d. providing each of the further wire coverings with a different radiopacity; and e. making each of the different radiopacities different than the first radiopacity.
Claim 15
Dependent Claim
104 words
Catheter guide wire apparatus comprising: a. a length of flexible wire having proximal and distal ends; b. a tip connected to the distal end of the wire; c. a flexible coil mounted around the wire adjacent to the tip and extending proximately therefrom; d. a first polymer sleeve, the sleeve including a mixture of a polymer and a radiopaque metal loading, mounted around the wire adjacent to the coil and extending proximately therefrom; e. at least a portion of the coil having a first radiopacity; and f. at least a portion of the polymer sleeve having a second radiopacity different than the first radiopacity.
Claim 16
Dependent Claim
104 words
Catheter guide wire apparatus comprising: a. a length of flexible wire having proximal and distal ends; b. a tip connected to the distal end of the wire; c. a flexible coil mounted around the wire adjacent to the tip and extending proximately therefrom; d. a first polymer sleeve, the sleeve including a mixture of a polymer and a radiopaque metal loading, mounted around the wire adjacent to the coil and extending proximately therefrom; e. at least a portion of the coil having a first radiopacity; and f. at least a portion of the polymer sleeve having a second radiopacity different than the first radiopacity.
Claim 17
Dependent Claim
50 words
The apparatus of claim 12 including: a. further polymer sleeves mounted around the wire intermediate the first polymer sleeve and the proximal end of the wire; and b. the further polymer sleeves each having a radiopacity different from one another and different from the coil and first polymer sleeve radiopacities.
Claim 18
Independent Claim
20 words
The apparatus of claims 12 or 13 in which the first and further polymer sleeves comprise a lubricous polymer material.
Claim 19
Dependent Claim
27 words
The apparatus of claim 14 in which the polymer material is loaded with a mixture selected from the group consisting of barium sulfate, bismuth, tungsten, or platinum.
References Cited (Backward Citations)
US3789841A
Cited
US4545390A
Cited
US4538622A
Cited
US4619274A
Cited
US5201754A
Cited
US4798598A
Cited
US4763647A
Cited
US4830023A
Cited
US4934380A
Cited
US4846186A
Cited
US4884579A
Cited
US5063935A
Cited
US4922924A
Cited
US4953553A
Cited
US5144959A
Cited
US5084022A
Cited
US5147317A
Cited
US5174302A
Cited
US5228453A
Cited
US5213111A
Cited
WO1993008862A1
Cited
US5253653A
Cited
US5234003A
Cited
US5259393A
Cited
US5267574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-03-12 | 1999-09-11 | 2000-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-12 | 2003-09-11 | 2004-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-12 | 2007-09-11 | 2008-03-12 | $7700.00 | Window Closed / Lapsed |