Catheter system having a balloon angioplasty device disposed over a work element lumen and method of use
First Claim
Patent Images
1. A vascular catheter system comprising:
- a catheter body having proximal and distal ends, and a proximal and a distal region, the proximal region having at least two lumens and the distal region having a common lumen connected to and in communication with both lumens of the proximal region;
a balloon disposed about the common lumen; and
a balloon inflation lumen disposed within the proximal region of the catheter body and coaxially about the common lumen of the distal region of the catheter body.
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Accused Products
Abstract
An intravascular catheter system has a balloon angioplasty device disposed about a common lumen near its distal end. The common lumen is in communication with multiple lumens within a proximal region of the catheter body to allow for positioning of the catheter over a movable guide wire and convenient delivery of imaging or interventional devices to a desired region of the blood vessel being treated.
36 Citations
11 Claims
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1. A vascular catheter system comprising:
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a catheter body having proximal and distal ends, and a proximal and a distal region, the proximal region having at least two lumens and the distal region having a common lumen connected to and in communication with both lumens of the proximal region; a balloon disposed about the common lumen; and a balloon inflation lumen disposed within the proximal region of the catheter body and coaxially about the common lumen of the distal region of the catheter body. - View Dependent Claims (2)
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3. A vascular catheter system comprising:
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a catheter body having proximal and distal ends, and a proximal and a distal region, the proximal region having at least two lumens and the distal region having a common lumen connected to and in communication with both lumens of the proximal region; a balloon disposed about the common lumen; means for inflating the balloon, a rotatable drive shaft having proximal and distal ends, the drive shaft reciprocatably disposed within a lumen of the proximal region of the catheter body; and a work element fixed to the distal end of the drive shaft, the work element positionable within the common lumen of the distal region of the catheter body; an axially expandable member connected to the proximal end of the catheter body; and a proximal housing connected to the proximal end of the drive shaft and the axially expandable member, whereby the work element may be advanced from a position within a lumen of the proximal region into a position within the common lumen of the distal region by moving the proximal housing with respect to the catheter body. - View Dependent Claims (4, 5, 6, 7, 8)
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9. A method for imaging and treating a region of a patient'"'"'s blood vessel using a catheter system comprising a guidewire;
- an ultrasonic imaging transducer fixed to a distal end of a drive shaft;
a catheter body having a proximal region including at least two lumens, and a distal region including a common lumen connected to and in communication with both lumens of the proximal region; and
an angioplasty balloon disposed about the distal region;
the method comprising the steps of;advancing the guidewire into the blood vessel until a distal end of the guidewire lies within the stenosed region and a proximal end of the guidewire extends from the patient; loading the proximal end of the guidewire into the common lumen of the distal region of the catheter body; advancing the catheter body into the blood vessel until the angioplasty balloon and the common lumen lie within the region of stenosis; inflating the balloon through an inflation lumen which is disposed coaxially over the distal region of the catheter body to dilate the blood vessel and reduce the stenosis; retracting the distal end of the guidewire out of the common lumen into a lumen of the proximal region of the catheter body; advancing the ultrasonic transducer and drive shaft through a lumen of the proximal region of the catheter body into the common lumen; and imaging the region of interest within the blood vessel. - View Dependent Claims (10)
- an ultrasonic imaging transducer fixed to a distal end of a drive shaft;
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11. A method of treating a region of a patient'"'"'s blood vessel using a catheter system comprising a guidewire;
- an interventional work element fixed to a distal end of a drive shaft;
a catheter body having a proximal region including at least two lumens, and a distal region including a common lumen connected to and in communication with both lumens of the proximal region; and
an angioplasty balloon disposed about the distal region;
the method comprising the steps of;advancing the guidewire into the blood vessel until a distal end of the guidewire lies within the stenosed region and a proximal end of the guidewire extends from the patient; loading the proximal end of the guidewire into the common lumen of the distal region of the catheter body; advancing the catheter body into the blood vessel until the angioplasty balloon and the common lumen lie within the region of stenosis; inflating the balloon through an inflation lumen which is disposed coaxially over the distal region of the catheter body to dilate the blood vessel and reduce the stenosis; retracting the distal end of the guidewire out of the common lumen into a lumen of the proximal region of the catheter body; advancing the interventional work element and drive shaft through a lumen of the catheter body and through the common lumen into the blood vessel; and treating the region of interest with the interventional device.
- an interventional work element fixed to a distal end of a drive shaft;
Specification