Temporary stenting catheter with one-piece expandable segment
First Claim
1. An intravascular catheter for maintaining the patency of an arterial vasculature for an extended period, the catheter comprising:
- a) a catheter body having a proximal end and a distal end, said catheter body also having a first inner lumen and a second inner lumen extending therethrough from a proximal guidewire port to a distal guidewire port which is adapted to receive a guidewire therein;
b) an expandable region having a proximal end and a distal end, said expandable region formed from said distal end of said catheter body in a one-piece configuration, said distal end of said expandable region having a passageway for the passage of said guidewire therethrough;
c) a flexible tubular guide element extending through said expandable region and having an interior in communication with said second inner lumen of said catheter body and adapted to receive said guidewire therein; and
d) a control wire disposed within said first inner lumen of said catheter body having a distal end attached to said distal end of said expandable region and having means on said proximal end of said catheter body to move said control wire axially for adjusting the axial distance between said proximal and distal ends of said expandable region thereby adjusting the radial dimension of said expandable region; and
e) said expandable region comprises a continuation of the catheter body having voids formed therein.
1 Assignment
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Accused Products
Abstract
An intravascular catheter with an expandable region formed of a tubular material that continues the distal end of the catheter body in a one-piece configuration and is radially expanded and contracted by means of a control wire. The interior of the expandable region is in fluid communication with a lumen in the catheter body to allow the delivery of a fluid to the artery via openings in the surface of the expandable region. The catheter is particularly adapted to hold open an artery after a vascular procedure therein such as a balloon or other type of angioplasty, and if desired to introduce a therapeutic drug or other fluid to the site of the vascular procedure.
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Citations
14 Claims
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1. An intravascular catheter for maintaining the patency of an arterial vasculature for an extended period, the catheter comprising:
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a) a catheter body having a proximal end and a distal end, said catheter body also having a first inner lumen and a second inner lumen extending therethrough from a proximal guidewire port to a distal guidewire port which is adapted to receive a guidewire therein; b) an expandable region having a proximal end and a distal end, said expandable region formed from said distal end of said catheter body in a one-piece configuration, said distal end of said expandable region having a passageway for the passage of said guidewire therethrough; c) a flexible tubular guide element extending through said expandable region and having an interior in communication with said second inner lumen of said catheter body and adapted to receive said guidewire therein; and d) a control wire disposed within said first inner lumen of said catheter body having a distal end attached to said distal end of said expandable region and having means on said proximal end of said catheter body to move said control wire axially for adjusting the axial distance between said proximal and distal ends of said expandable region thereby adjusting the radial dimension of said expandable region; and e) said expandable region comprises a continuation of the catheter body having voids formed therein. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for repairing an arterial vasculature having an occluded or partially occluded portion, comprising:
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a) providing a catheter having i) a catheter body having a first inner lumen and a second inner lumen extending from a proximal guidewire port to a distal guidewire port which is adapted to receive a guidewire therein, said guidewire having a proximal end and a distal end; iii) an expandable region having a proximal end and a distal end, said expandable region formed from said distal end of said catheter body in a one-piece configuration, said distal end of said expandable region having a passageway for the passage of said guidewire therethrough, said expandable region comprising a continuation of the catheter body having voids therein; iv) a flexible tubular guide element extending through said expandable region and having an interior in communication with said second inner lumen of said catheter body and adapted to receive said guidewire therein; and v) a control wire disposed within said first inner lumen of said catheter body having a distal end attached to said distal end of said expandable region and having control means on a proximal end of said catheter body to move said control wire axially so as to adjust the axial distance between said proximal and distal ends of said expandable region and thereby adjust the radial dimension of said expandable region; b) advancing said guidewire through said passageway provided in said expandable region, through said flexible tubular guiding element within said expandable region, through said second inner lumen of said catheter body, and out said proximal guidewire port; c) positioning said distal end of said guidewire in the arterial vasculature across the site of the occlusion; d) advancing said catheter body over said guidewire until said expandable region is positioned across the site of the occlusion; and e) manipulating said control means to move said control wire proximally thereby expanding said expandable region.
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Specification