Catheter system having a balloon angioplasty device disposed over a work element lumen
First Claim
Patent Images
1. A 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;
an inflatable balloon disposed about at least a portion of the common lumen;
a rotatable drive shaft having proximal and distal regions, the drive shaft rotatably disposed within a lumen of the proximal region of the catheter body;
a work element coupled to the distal region of the drive shaft, the work element positionable within the common lumen of the distal region of the catheter body; and
a balloon inflation lumen disposed parallel to the at least two lumens of the proximal region and disposed concentrically about the common lumen of the distal region of the catheter body.
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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.
33 Citations
11 Claims
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1. A 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;
an inflatable balloon disposed about at least a portion of the common lumen;
a rotatable drive shaft having proximal and distal regions, the drive shaft rotatably disposed within a lumen of the proximal region of the catheter body;
a work element coupled to the distal region of the drive shaft, the work element positionable within the common lumen of the distal region of the catheter body; and
a balloon inflation lumen disposed parallel to the at least two lumens of the proximal region and disposed concentrically about the common lumen of the distal region of the catheter body. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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.
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8. 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 portion of a rotatable 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;
a treatment balloon disposed about at least a portion of the distal region; and
a balloon inflation lumen disposed parallel to the at least two lumens of the proximal region and disposed concentrically about the common lumen of the distal region of the catheter body;
the method comprising the steps of;advancing the guidewire in the blood vessel until a distal end portion of the guidewire lies within a region of stenosis, and a proximal end portion of the guidewire extends from the patient;
moving the proximal end portion 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 treatment balloon and the common lumen lie within the region of stenosis;
inflating the treatment balloon through the balloon inflation lumen to dilate the blood vessel and reduce the stenosis;
retracting the distal end portion 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 stenosis within the blood vessel. - View Dependent Claims (9, 10)
- an ultrasonic imaging transducer fixed to a distal portion of a rotatable drive shaft;
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11. A method for treating a region of a patient'"'"'s blood vessel using a catheter system comprising a guidewire;
- an interventional work element fixed to a distal region of a rotatable 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;
an angioplasty balloon disposed about at least a portion of the distal region; and
a balloon inflation lumen disposed parallel to the at least two lumens of the proximal region and disposed concentrically about the common lumen of the distal region of the catheter body;
the method comprising the steps of;advancing the guidewire into the blood vessel until a distal end portion of the guidewire lies within a region of stenosis and a proximal end portion of the guidewire extends from the patient;
moving the proximal end portion 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 in the region of stenosis;
inflating the angioplasty balloon through the balloon inflation lumen to dilate the blood vessel and reduce the stenosis;
retracting the distal end portion of the guidewire out of the common lumen into a lumen of the proximal region of the catheter body;
advancing the interventional work element 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 region of a rotatable drive shaft;
Specification