Patent US3329390A successfully refreshed from Google Patents.
EP0313836A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Pressure monitoring guidewire
Assignee: Abbott Cardiovascular Systems Inc
•
Filing: 1988-09-26
•
Granted: —
•
Expires: 2008-09-26
Abstract
Abstract Pressure monitoring guidewire (10) and method of using the same for a coronary procedure such as angioplasty, angiography, or valvuloplasty. The guidewire (10) has a hollow tubular member (13) with a pressure monitoring port (31) toward the distal end thereof. The distal end portion of the guidewire (10) is advanced beyond the distal end of the dilatation catheter, with the pressure monitoring port (31) in a portion of the coronary anatomy where pressure is to be monitored. With the guidewire (10) so positioned, the pressure in the desired portion of the coronary anatomy is measured at the proximal end of the guidewire through the luminal opening (14) in the hollow tubular member (13).
Inventors
- 👤 William Stephen Tremulis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 03:18
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6846; A61B5/6847; A61B5/6851; A61B5/02; A61B5/021; A61B5/0215; A61M; A61M25/00; A61M25/01; A61M25/09; A61B17/00; A61B2017/00743; A61B2017/00778; A61B2017/00783; A61B17/22; A61B2017/22001; A61M2025/09175
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
70 words
A guidewire for use in a patient's blood vessel with a dilatation catheter having an inflatable balloon, comprising an elongated tubular member having proximal and distal portions and an internal lumen extending axially therethrough and at least one pressure monitoring port in the distal end portion thereof in fluid communication with the lumen to facilitate monitoring pressure in a portion of the anatomy beyond the distal end of the catheter.
Claim 2
Dependent Claim
70 words
A guidewire for use in a patient's blood vessel with a dilatation catheter having an inflatable balloon, comprising an elongated tubular member having proximal and distal portions and an internal lumen extending axially therethrough and at least one pressure monitoring port in the distal end portion thereof in fluid communication with the lumen to facilitate monitoring pressure in a portion of the anatomy beyond the distal end of the catheter.
Claim 3
Dependent Claim
18 words
The guidewire of claim 1 wherein the pressure monitoring ports open through the sidewall of the tubular member.
Claim 4
Dependent Claim
43 words
The guidewire of any one of the preceding claims wherein the tubular member comprises a tubular shaft and a relatively short tubular extension at the distal end of the tubular shaft with at least one pressure monitoring port formed in the tubular extension.
Claim 5
Dependent Claim
26 words
The guidewire of claim 3 including a solid core extending axially from the distal end of the tubular extension to the distal end of the guidewire.
Claim 6
Dependent Claim
54 words
The guidewire of claim 4 wherein a flexible spring coil extends proximally from the distal end of the guidewire and is disposed about the tubular extension and the solid core, the windings of the coil in the region of at least one pressure monitoring port being spaced apart to provide unobstructed fluid access thereto.
Claim 7
Dependent Claim
53 words
The guidewire of claim 4 wherein the tubular shaft has a length on the order of 145 cm, the pressure monitoring ports are positioned about 25 cm beyond the distal end of the tubular shaft, and the spring coil extends a distance on the order of 5 cm beyond the pressure monitoring hole.
Claim 8
Dependent Claim
29 words
The guidewire of claim 3 wherein an intermediate tubular member having at least one port in the sidewall thereof is secured to the distal end of the tubular extension.
Claim 9
Dependent Claim
25 words
The guidewire of claim 1 wherein a solid core extends from the distal end of the tubular member to the distal end of the guidewire.
Claim 10
Dependent Claim
26 words
The guidewire of claim 8 wherein a flexible spring coil extends proximally from the distal end of the guidewire and is disposed about the solid core.
Claim 11
Dependent Claim
100 words
A dilatation catheter assembly comprising an outer tubular member having an inflatable balloon near the distal end thereof, an inner tubular member disposed within the outer tubular member, the distal ends of the inner and outer tubular members tightly secured together and a guidewire disposed within the inner tubular member having an elongated tubular member with proximal and distal portions and an internal lumen extending therethrough and at least one pressure monitoring port in the distal portion of the guidewire tubular member in fluid communication with the lumen therein to facilitate monitoring pressure beyond the distal end of the catheter.
Claim 12
Dependent Claim
100 words
A dilatation catheter assembly comprising an outer tubular member having an inflatable balloon near the distal end thereof, an inner tubular member disposed within the outer tubular member, the distal ends of the inner and outer tubular members tightly secured together and a guidewire disposed within the inner tubular member having an elongated tubular member with proximal and distal portions and an internal lumen extending therethrough and at least one pressure monitoring port in the distal portion of the guidewire tubular member in fluid communication with the lumen therein to facilitate monitoring pressure beyond the distal end of the catheter.
Claim 13
Independent Claim
143 words
A method of monitoring pressure in a patient's blood vessel during a procedure such as angioplasty or valvuloplasty utilizing a dilatation catheter with an inflatable balloon on the distal portion thereof and a guidewire having an elongated hollow tubular member with at least one pressure monitoring port toward the distal end thereof, the method comprising the steps of: positioning the guidewire within the patient's blood vessels; advancing the catheter along the guidewire to position the balloon thereof adjacent to a lesion to be treated; positioning the guidewire relative to the catheter so that the pressure monitoring port is in a portion of the blood vessel beyond the distal end of the catheter, and monitoring the pressure at the proximal end of the hollow tubular member to determine the pressure in the portion of the blood vessel where the pressure monitoring port is located.
Claim 14
Independent Claim
143 words
A method of monitoring pressure in a patient's blood vessel during a procedure such as angioplasty or valvuloplasty utilizing a dilatation catheter with an inflatable balloon on the distal portion thereof and a guidewire having an elongated hollow tubular member with at least one pressure monitoring port toward the distal end thereof, the method comprising the steps of: positioning the guidewire within the patient's blood vessels; advancing the catheter along the guidewire to position the balloon thereof adjacent to a lesion to be treated; positioning the guidewire relative to the catheter so that the pressure monitoring port is in a portion of the blood vessel beyond the distal end of the catheter, and monitoring the pressure at the proximal end of the hollow tubular member to determine the pressure in the portion of the blood vessel where the pressure monitoring port is located.
Claim 15
Dependent Claim
30 words
The method of claim 11 including the step of introducing a therapeutic agent into the blood vessel through the hollow tubular shaft and the pressure monitoring port of the guidewire.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.