Intra-artery obstruction clearing apparatus and methods
First Claim
1. A combination for concentric arterial plaque removal comprising:
- a hollow catheter tube comprising a distal end;
a drive cable rotatably passing through the hollow of the catheter tube, the drive cable comprising a distal end;
a coupling comprising a stationary part non-rotatably connected to the distal end of the catheter tube, and a rotatable part non-rotatably connected to the drive cable and rotatable in respect to the stationary part;
a rotatable cutting head for concentric plaque removal as the head is distally advanced to increase blood flow;
the coupling further comprising a site for non-rotatable connection to the head;
whereby rotation of the cable drive rotates the rotatable part in respect to the stationary part and the catheter tube, which rotates the head to cut in a distal direction.
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Accused Products
Abstract
Disposable intra-arterial augering and dottering instruments for use in patients in clearing pathways at obstructed or nearly obstructed arterial sites are disclosed. A number of augering tips used on the instruments are disclosed along with a method for releasibly affixing augering tips to the instruments. In addition, a dottering tip is disclosed for use in procedures where it is desired to open a pathway without excising material from the obstructed site. A combined augering and dottering tip is disclosed for a procedure in which material displacement followed by excising of material from within an artery is accomplished without removal of the combined augering and dottering tip until the procedure is complete.
412 Citations
24 Claims
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1. A combination for concentric arterial plaque removal comprising:
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a hollow catheter tube comprising a distal end; a drive cable rotatably passing through the hollow of the catheter tube, the drive cable comprising a distal end; a coupling comprising a stationary part non-rotatably connected to the distal end of the catheter tube, and a rotatable part non-rotatably connected to the drive cable and rotatable in respect to the stationary part; a rotatable cutting head for concentric plaque removal as the head is distally advanced to increase blood flow; the coupling further comprising a site for non-rotatable connection to the head; whereby rotation of the cable drive rotates the rotatable part in respect to the stationary part and the catheter tube, which rotates the head to cut in a distal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A combination for cutting arterial plaque comprising:
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a hollow catheter tube comprising a distal end; a drive cable rotatably passing through the hollow of the catheter tube, the drive cable comprising a distal end; a coupling comprising a stationary part non-rotatably connected to the distal end of the catheter tube, and a rotation-accommodating part; a concentric plaque-cutting head comprising a distally-directed plaque cutter;
the distal end of the drive cable being non-rotatably connected to the head;the rotation-accommodating part of the coupling comprising an elongated site in which the head is journalled for both rotation and axial displacement; whereby rotation of the cable drive rotates the head which turns against and is displaced along the elongated site. - View Dependent Claims (21)
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22. A combination for displacing arterial plaque comprising:
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a hollow catheter tube comprising a distal end and an inside diameter; a cable rotatably passing through the hollow of the catheter tube, the cable comprising a distal end; a lumen-enlarging cutting head carried beyond the distal end of the catheter tube and comprising a distally-directed cutter comprising a cutting portion, the diametral size of at least some of the cutting portion being greater than the inside diameter of the catheter; the distal end of the cable being non-rotatably connected to the head; whereby rotation of the cable rotates the head. - View Dependent Claims (24)
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23. A combination for treating arterial plaque comprising:
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a hollow catheter tube comprising a distal end; a drive tube rotatably passing through the hollow of the catheter tube, the drive tube comprising a distal end; a dual plaque-treating head comprising a dottering portion and a distally-directed cutting portion in tandem; the distal end of the drive tube being non-rotatably connected to the dottering portion; the distal end of the catheter tube being non-rotatably connected to the cutting portion; whereby rotation of the cable tube vibrates the dottering portion against plaque while the cutting portion turns and cuts distally as the catheter tube is turned.
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Specification