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US 6,712,783 B1Granted
Catheter system having a balloon angioplasty device disposed over a work element lumen
AssigneeCardiovascular Imaging, Inc.
InventorYue-Teh Jang
Life of this patent
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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.
Claims11
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.
3 more elements
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.
10 more elements
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.
10 more elements
Dependencies are inferred from the claim text.