US4953553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure monitoring guidewire with a flexible distal portion
Assignee: Abbott Cardiovascular Systems Inc
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Filing: 1989-05-11
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Granted: 1990-09-04
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Expires: 2009-05-11
Abstract
Abstract A pressure monitoring guidewire and method of using the same for a coronary procedure such as angioplasty, angiography, or valvuloplasty. The guidewire has a main tubular member and a more flexible tubular extension with one or more pressure monitoring ports on the distal end thereof. The distal end portion of the guidewire is advanced beyond the distal end of the dilatation catheter, with the pressure monitoring port in a portion of the coronary anatomy where pressure is to be monitored. With the guidewire so positioned, the pressure in the desired portion of the coronary anatomy is measured at the proximal end of the guidewire through the proximal opening in the main tubular member.
Inventors
- 👤 William S. Tremulis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:53
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6846; A61B5/6847; A61B5/6851; A61B17/00; A61B17/22; A61B5/02; A61B5/021; A61B5/0215; A61M; A61M25/00; A61M25/01; A61M25/09; A61B2017/00743; A61B2017/00778; A61B2017/00783; A61M2025/09058; A61M2025/09066; A61M2025/09175
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
A guidewire which facilitates advancing a catheter within a patient's vasculature and which allows fluid pressure at the distal extremity of the guidewire to be determined from the proximal end thereof, comprising: (a) an elongated tubular member having an inner lumen extending essentially from the proximal end to the distal end thereof; (b) a relatively short flexible plastic tubular member which is secured by the proximal end thereof to the distal end of the elongated tubular member, which has an inner lumen in fluid communication with the inner lumen of the tubular member and which is provided with at least one pressure monitoring port; (c) a core member which extends distally through at least a portion of the flexible plastic tubular member and which is secured to the flexible tubular element; and (d) a flexible coil disposed about and secured to the core member.
Claim 2
Dependent Claim
144 words
A guidewire which facilitates advancing a catheter within a patient's vasculature and which allows fluid pressure at the distal extremity of the guidewire to be determined from the proximal end thereof, comprising: (a) an elongated tubular member having an inner lumen extending essentially from the proximal end to the distal end thereof; (b) a relatively short flexible plastic tubular member which is secured by the proximal end thereof to the distal end of the elongated tubular member, which has an inner lumen in fluid communication with the inner lumen of the tubular member and which is provided with at least one pressure monitoring port; (c) a core member which extends distally through at least a portion of the flexible plastic tubular member and which is secured to the flexible tubular element; and (d) a flexible coil disposed about and secured to the core member.
Claim 3
Dependent Claim
18 words
The guidewire of claim 1 wherein pressure monitoring ports open through the wall of the flexible tubular element.
Claim 4
Dependent Claim
53 words
The guidewire of claim 1 wherein the elongated tubular member comprises a relatively long tubular shaft and a relatively short tubular extension at the distal end of the tubular shaft which connects in fluid communication the inner lumen of the elongated tubular member and the inner lumen of the flexible plastic tubular member.
Claim 5
Dependent Claim
19 words
The guidewire of claim 3 wherein the core member extends axially from the distal end of the tubular extension.
Claim 6
Dependent Claim
17 words
The guidewire of claim 4 wherein the core member extends to the distal end of the guidewire.
Claim 7
Dependent Claim
34 words
The guidewire of claim 4 wherein the core member terminates proximally of the distal end of the guidewire and a shaping ribbon extends from the core member to the distal end of the guidewire.
Claim 8
Dependent Claim
47 words
The guidewire of claim 4 wherein the tubular shaft has a length of about 120 to about 160 cm and wherein pressure monitoring ports open to the exterior of the guidewire are positioned about 20 to about 40 cm beyond the distal end of the tubular shaft.
Claim 9
Dependent Claim
19 words
The guidewire of claim 1 wherein the flexible coil extends distally from the distal end of the tubular element.
Claim 10
Dependent Claim
161 words
In a steerable balloon dilatation catheter assembly having an elongated tubular body with an inflatable balloon near the distal end thereof and a guidewire fixed therein the improvement which comprises: (a) an elongated tubular member having an inner lumen extending essentially from the proximal end to the distal end thereof; (b) a relatively short flexible plastic tubular element which is secured by the proximal end thereof to the distal end of the elongated tubular member, which has an inner lumen in fluid communication with the inner lumen of the tubular member and which is provided with at least one pressure monitoring port distal to the balloon attached thereto; (c) a core member which extends distally through at least a portion of the flexible plastic tubular element and which is secured at the proximal end thereof to the flexible tubular element; (d) a flexible coil member disposed about and secured to the portion of the core member which extends out of balloon.
Claim 11
Dependent Claim
161 words
In a steerable balloon dilatation catheter assembly having an elongated tubular body with an inflatable balloon near the distal end thereof and a guidewire fixed therein the improvement which comprises: (a) an elongated tubular member having an inner lumen extending essentially from the proximal end to the distal end thereof; (b) a relatively short flexible plastic tubular element which is secured by the proximal end thereof to the distal end of the elongated tubular member, which has an inner lumen in fluid communication with the inner lumen of the tubular member and which is provided with at least one pressure monitoring port distal to the balloon attached thereto; (c) a core member which extends distally through at least a portion of the flexible plastic tubular element and which is secured at the proximal end thereof to the flexible tubular element; (d) a flexible coil member disposed about and secured to the portion of the core member which extends out of balloon.
Claim 12
Dependent Claim
25 words
The guidewire of claim 1 wherein the distal portion thereof can pass through a radius of curvature of 0.5 cm without developing a permanent set.
References Cited (Backward Citations)
US4003369A
Cited
US4582181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-03 | 1994-03-05 | 1994-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-03 | 1998-03-05 | 1998-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-03 | 2002-03-05 | 2002-09-04 | $7700.00 | Window Closed / Lapsed |