Stabilized tissue penetrating catheters
First Claim
1. A catheter device for penetrating through the wall of a vessel within a patient'"'"'s body to a target location outside of that vessel, said device comprising:
- a catheter body having a proximal end and a distal end, the catheter body being advanceable into the vessel;
a tissue penetrator that is passable from the catheter body, through the wall of the vessel and to the target location outside the vessel;
catheter orientation apparatus comprising at least one of i) an imageable marker indicative of the direction in which the tissue penetrator will pass from the catheter body and ii) an imaging apparatus for imaging at least the target location prior to passage of the tissue penetrator from the catheter body; and
, a stabilizer that is radially extendable from the catheter body to deter at least some movement of the catheter body within the vessel as the penetrator penetrates through the wall of the blood vessel.
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Accused Products
Abstract
A tissue penetrating catheter that is usable to advance a tissue penetrator from within a blood vessel, through the wall of the blood vessel to a target location. The catheter includes at least one stabilizing device thereon for stabilizing catheter prior to advancing the tissue penetrator. The tissue penetrator may extend through a lumen in the body of the catheter and project transversely through an exit port. The stabilizing device may be located closely adjacent to the exit port, or may surround the exit port. The stabilizing device may be one or more balloons, or other mechanical structure that is expandable into contact with the inner luminal wall of the blood vessel. Desirably, the exit port is forced into contact with the blood vessel wall to shorten the distance that the tissue penetrator projects from the catheter body to the target location. The catheter is particular useful for forming blood flow tracts between blood vessels, in particular in coronary revascularization procedures. Methods of utilizing such a catheter to bypass an arterial obstruction is also disclosed.
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Citations
51 Claims
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1. A catheter device for penetrating through the wall of a vessel within a patient'"'"'s body to a target location outside of that vessel, said device comprising:
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a catheter body having a proximal end and a distal end, the catheter body being advanceable into the vessel;
a tissue penetrator that is passable from the catheter body, through the wall of the vessel and to the target location outside the vessel;
catheter orientation apparatus comprising at least one of i) an imageable marker indicative of the direction in which the tissue penetrator will pass from the catheter body and ii) an imaging apparatus for imaging at least the target location prior to passage of the tissue penetrator from the catheter body; and
,a stabilizer that is radially extendable from the catheter body to deter at least some movement of the catheter body within the vessel as the penetrator penetrates through the wall of the blood vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of deploying a tissue penetrator from a catheter positioned within a vessel within a patient'"'"'s body such that the tissue penetrator penetrates through the wall of the vessel to a target location outside of the vessel, said method comprising the steps of:
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providing a catheter device that comprises a catheter body, a tissue penetrator passable from a location on the catheter body, at least one catheter orientation apparatus useable to orient the catheter such that the tissue penetrator will penetrate from the catheter to a desired target location and a stabilizer for stabilizing at least a portion of the catheter body within the vessel;
placing the catheter at a desired location within a vessel;
using the catheter orientation apparatus to orient the catheter such that the tissue penetrator will enter the target locations when the tissue penetrator is subsequently passed from the catheter body;
stabilizing the catheter body within the vessel; and
passing the tissue penetrator from the stabilized catheter body through the wall of the vessel and to the target location. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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Specification