Pressure monitoring guidewire with a flexible distal portion
First Claim
1. 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.
1 Assignment
0 Petitions
Accused Products
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.
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Citations
10 Claims
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1. 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:
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(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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10)
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9. 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:
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(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.
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Specification