Catheter system having imaging, balloon angioplasty, and stent deployment capabilities, and method of use for guided stent deployment
First Claim
1. A method for guided placement and implanting of a prosthesis within a body passageway using a catheter having proximal and distal regions, wherein the prosthesis is associated with the distal region of the catheter, said prosthesis having proximal and distal ends, said method comprising the steps of:
- advancing the catheter into the body passageway until the prosthesis lies within a region of interest;
imaging by ultrasound using an imaging assembly from within the body passageway at least one of the proximal and distal ends of the prosthesis to ensure that the prosthesis is positioned at a desired location; and
expanding the prosthesis at the region of interest while maintaining the imaging assembly within the region of interest.
4 Assignments
0 Petitions
Accused Products
Abstract
A catheter system has a balloon angioplasty device disposed about a common lumen near its distal end. The balloon catheter is pre-fitted with a stent which is deployed when the balloon is inflated. 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 a body passageway being treated. The procedure for stent deployment optionally includes steps of imaging a lumen by ultrasound before and after stent deployment to identify the site at which a stent is needed, to confirm that the stent is being and has been deployed at a longitudinal position which does not overlap a branched segment of the body passageway, and to ensure that the stent has been radially opened to an optimum diameter.
438 Citations
39 Claims
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1. A method for guided placement and implanting of a prosthesis within a body passageway using a catheter having proximal and distal regions, wherein the prosthesis is associated with the distal region of the catheter, said prosthesis having proximal and distal ends, said method comprising the steps of:
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advancing the catheter into the body passageway until the prosthesis lies within a region of interest; imaging by ultrasound using an imaging assembly from within the body passageway at least one of the proximal and distal ends of the prosthesis to ensure that the prosthesis is positioned at a desired location; and expanding the prosthesis at the region of interest while maintaining the imaging assembly within the region of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for implanting a prosthesis within a body passageway using a catheter having proximal and distal regions, and an angioplasty balloon disposed about the distal region, wherein the prosthesis is associated with said balloon, said method comprising the steps of:
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positioning the catheter within the body passageway so that the angioplasty balloon lies within a region of interest; inflating the balloon to controllably expand the prosthesis at the region of interest; imaging the prosthesis with an imaging assembly while disposed about the inflated balloon to determine a first diameter of the expanded prosthesis while maintaining the imaging assembly in the region of interest; deflating the balloon, whereby the prosthesis is allowed to recoil; and imaging the prosthesis to determine a second diameter to ensure that the recoiled prosthesis has a diameter sufficiently large. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A method for implanting a prosthesis within a body passageway using a catheter having proximal and distal regions, wherein a first prosthesis is associated with the distal region, said method comprising the steps of:
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positioning the catheter within the body passageway so that the first prosthesis lies within a region of interest; placing an imaging in the region of interest; expanding the first prosthesis at the region of interest while maintaining the imaging assembly in the region of interest; and imaging the expanded prosthesis to determine a first diameter of the expanded prosthesis. - View Dependent Claims (23)
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24. A method for guided placement and implanting of a prosthesis within a body passageway using a catheter having proximal and distal regions, wherein the prosthesis is associated with the distal region of the catheter, said prosthesis having proximal and distal ends, said method comprising the steps of:
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advancing the catheter into the body passageway until the prosthesis lies within a region of interest; imaging by ultrasound from within the body passageway at least one of the proximal and distal ends of the prosthesis to ensure that the prosthesis is positioned at a desired location; and expanding the prosthesis at the region of interest substantially simultaneously with imaging of the region of interest. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method for implanting a prosthesis within a body passageway using a catheter having proximal and distal regions, wherein a first prosthesis is associated with the distal region, said method comprising the steps of:
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positioning the catheter within the body passageway so that the first prosthesis lies within a region of interest; expanding the first prosthesis at the region of interest; and imaging the expanded prosthesis to determine a first diameter of the expanded prosthesis; and expanding a second prosthesis within the first prosthesis to enlarge the diameter of said first prosthesis.
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39. A method for guided placement and implanting of a prosthesis within a body passageway using a catheter having proximal and distal regions, wherein the catheter includes a sheath disposed about the distal region of the catheter body and wherein the prosthesis is associated with the distal region of the catheter, said prosthesis having proximal and distal ends, said method comprising the steps of:
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advancing the catheter into the body passageway until the prosthesis lies within a region of interest; imaging by ultrasound from within the body passageway at least one of the proximal and distal ends of the prosthesis to ensure that the prosthesis is positioned at a desired location; expanding the prosthesis at the region of interest by removing the sheath; imaging the prosthesis after removing the sheath to determine an expanded diameter and to ensure that the expanded prosthesis has a desired diameter; and expanding a second prosthesis within the prosthesis to enlarge the diameter.
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Specification