Rapidly exchangeable and expandable cage catheter for repairing damaged blood vessels
First Claim
1. An intravascular catheter for maintaining the patency of an arterial passageway for an extended period, comprising:
- a) an elongated catheter body having a first lumen which extends longitudinally therein over essentially the entire length thereof and a second, much shorter, inner lumen which extends longitudinally in a flexible distal portion of the catheter body between a proximal guidewire port and a distal guidewire port in the distal portion of the catheter body and which is adapted to receive a guidewire therein;
b) an expandable cage formed of a plurality of strands which has a distal end with an opening therein and a proximal end which is secured to the distal end of the catheter body;
c) a flexible tubular guide element extending through the expandable cage which has an inner lumen in communication with the second inner lumen within the catheter body and adapted to receive a guidewire therein; and
d) a control wire disposed within the first lumen having a distal end secured to the distal end of the expandable cage and having means on the proximal end at the catheter body proximal end to longitudinally move the control wire so as to adjust the axial distance between the proximal and distal ends of the expandable cage and thereby adjust the radial dimension of the expandable cage.
1 Assignment
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Accused Products
Abstract
An intravascular catheter having an expandable cage mounted on the distal end of a tubular member which is radially expanded and contracted by means of a control wire. The control wire extends through a first inner lumen within the tubular member which extends along essentially the entire length thereof. A second inner lumen is provided in the distal portion of the tubular member which has a proximal guidewire port at least 15 cm but not more than 60 cm from the distal end of the catheter and a distal guidewire port which opens into the interior of the expandable cage. A guidewire or low profile fixed-wire steerable dilatation catheter is slidably disposed within the second lumen and a flexible tubular element extends through the expandable cage interior to facilitate the rapid exchange of the catheter. The catheter is particularly adapted to hold open an artery after a vascular procedure therein such as a balloon or other type of angioplasty.
435 Citations
19 Claims
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1. An intravascular catheter for maintaining the patency of an arterial passageway for an extended period, comprising:
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a) an elongated catheter body having a first lumen which extends longitudinally therein over essentially the entire length thereof and a second, much shorter, inner lumen which extends longitudinally in a flexible distal portion of the catheter body between a proximal guidewire port and a distal guidewire port in the distal portion of the catheter body and which is adapted to receive a guidewire therein; b) an expandable cage formed of a plurality of strands which has a distal end with an opening therein and a proximal end which is secured to the distal end of the catheter body; c) a flexible tubular guide element extending through the expandable cage which has an inner lumen in communication with the second inner lumen within the catheter body and adapted to receive a guidewire therein; and d) a control wire disposed within the first lumen having a distal end secured to the distal end of the expandable cage and having means on the proximal end at the catheter body proximal end to longitudinally move the control wire so as to adjust the axial distance between the proximal and distal ends of the expandable cage and thereby adjust the radial dimension of the expandable cage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An intravascular catheter for maintaining the patency of an arterial passageway for an extended period, comprising:
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a) an elongated catheter body having a first lumen which extends longitudinally therein over essentially the entire length thereof and a second, much shorter, inner lumen which extends longitudinally in a flexible distal portion of the catheter body between a proximal guidewire port and a distal guidewire port in the distal portion of the catheter body and which is adapted to receive a guidewire therein; b) an expandable cage formed of a plurality of strands formed of an alloy of platinum, rhodium and iridium, which has a distal end with an opening therein and a proximal end which is secured to the distal end of the catheter body; and c) a control wire disposed within the first lumen having a distal end secured to the distal end of the expandable cage and having means on the proximal end to longitudinally move the control wire so as to adjust the axial distance between the proximal and distal ends of the expandable cage and thereby adjust the radial dimension of the expandable cage. - View Dependent Claims (18, 19)
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Specification