MATERIAL REMOVAL CATHETER AND METHOD
First Claim
1. A catheter for insertion into a biological conduit comprising:
- an elongate catheter shaft having a proximal end and a distal end;
a material collection chamber located within the catheter body;
a controllably arcuate segment including at least one opening that creates a fluid path between the material collection chamber and an exterior portion of the catheter shaft;
a curving element that controls the geometry of the controllably arcuate segment; and
a sliding member that moves material received through the arcuate segment opening into the material collection chamber away from said opening;
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Accused Products
Abstract
A catheter device and methods useable to extract material from a body conduit, e.g., a blood vessel, are provided. The catheter comprises a flexible catheter advanceable into the body conduit, an opening in a wall of the catheter in fluid communication with a material collection chamber, and a controllably arcuate segment near the distal tip of the catheter and the opening. The catheter may include a sliding member, located within a lumen of the catheter, used to move the material entering the catheter through the arcuate segment opening, into the material collection chamber and away from said opening. The catheter may include a single mechanism utilized to both generate a vacuum to cause material to enter the catheter at the arcuate segment opening and also cause the sliding member to travel, inside the catheter, moving material away from the opening and into the material collection chamber.
62 Citations
16 Claims
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1. A catheter for insertion into a biological conduit comprising:
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an elongate catheter shaft having a proximal end and a distal end; a material collection chamber located within the catheter body; a controllably arcuate segment including at least one opening that creates a fluid path between the material collection chamber and an exterior portion of the catheter shaft; a curving element that controls the geometry of the controllably arcuate segment; and a sliding member that moves material received through the arcuate segment opening into the material collection chamber away from said opening; - View Dependent Claims (2, 3, 4)
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5. A transluminal method for removing material from a biological conduit, said method comprising:
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A. providing a catheter device that comprises; an elongate catheter shaft having a proximal end and a distal end; a controllably arcuate segment including at least one opening in fluid communication with the proximal end; and a sliding member that moves material received through the arcuate segment opening away from said opening; B. percutaneously or surgically inserting and transluminally advancing the catheter into the biological conduit; and C. retracting the sliding member to move material away from the at least one opening. - View Dependent Claims (6, 7, 8)
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9. A transluminal method for removing material from a biological conduit, said method comprising the steps of:
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providing a catheter device that comprises; an elongated catheter shaft having a proximal end and a distal end; and a controllably arcuate segment defining at least one opening in fluid communication with the proximal end; percutaneously or surgically inserting and transluminally advancing the catheter into the biological conduit; applying suction to the at least one opening in the controllably arcuate segment; and changing the shape of the controllably arcuate segment from a bowed shape to a relatively straight shape. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification