Device for removal of intraluminal occlusions
First Claim
1. A device for removal of intraluminal occlusions which comprising:
- a catheter having a distal end for insertion into a patient and a proximal end;
a distal piston located within said distal end of said catheter for simultaneous longitudinal and rotational movement therein, said distal piston including a closed wave-shaped groove in a circumferential surface thereof which receives at least one stationary pin fixed to an inner portion of said distal end of said catheter; and
a cutting head, said cutting head being attached to said distal piston for simultaneous longitudinal and rotational movement together with said distal piston.
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Accused Products
Abstract
A method and device for removal of intraluminal occlusions which includes a catheter having a cutting head in a distal end thereof. The cutting head undergoes a simultaneous longitudinal and rotational movement by means of fluid pressure applied to a distal piston to which the cutting head is attached, The proximal end of the catheter includes a reciprocating pump which applies the fluid pressure to the distal piston. The cutting head is retractable to a sheathed or retracted position during insertion and movement in a patient. Material removed by the cutting head can either be collected in a chamber located between the distal piston and the cutting head or aspirated through the proximal end of the catheter.
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Citations
24 Claims
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1. A device for removal of intraluminal occlusions which comprising:
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a catheter having a distal end for insertion into a patient and a proximal end; a distal piston located within said distal end of said catheter for simultaneous longitudinal and rotational movement therein, said distal piston including a closed wave-shaped groove in a circumferential surface thereof which receives at least one stationary pin fixed to an inner portion of said distal end of said catheter; and a cutting head, said cutting head being attached to said distal piston for simultaneous longitudinal and rotational movement together with said distal piston. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of removing intraluminal occlusions which comprises:
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providing a catheter having a distal end for insertion into a patient with a cutting head for simultaneous longitudinal and rotational movement; inserting said distal end of said catheter into a lumen of a patient while maintaining said cutting head within said distal end of said catheter; positioning said distal end of said catheter near an object to be removed and; causing said cutting head to simultaneously move in both a longitudinal and a rotational movement so as to extend from said distal end of said catheter and cut said object to be removed, said step of causing including the steps of applying a pulsatile driving force to said cutting head to cause said cutting reciprocate longitudinally, and rotating said cutting response to longitudinal reciprocation of the cutting head. - View Dependent Claims (18, 19, 20)
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21. A device for removal of intraluminal occlusions which comprising:
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a catheter having a distal end for insertion into a patient and a proximal end; a distal piston located within said distal end of said catheter for simultaneous longitudinal and rotational movement therein, said distal piston including at least one stationary pin fixed thereto which is received in a closed wave-shaped groove formed in an inner surface of said distal end of said catheter; and a cutting head attached to said distal piston for simultaneous longitudinal and rotational movement together with said distal piston.
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22. A device for removal of intraluminal occlusions comprising:
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a catheter having a longitudinal axis and a distal end adapted for insertion into a passage in a patient'"'"'s body; a driven member located within said catheter; means for simultaneously reciprocating said driven member longitudinally in said catheter and rotating said driven member about said longitudinal axis; and a device head secured to said driven member for reciprocation longitudinally and rotating therewith, said device head projecting from said distal end when reciprocating longitudinally and rotating to remove occluding material from said passage in the patient'"'"'s body; wherein said means comprises; driving means for longitudinally reciprocating said driven member within said catheter; and further means responsive to longitudinal reciprocation of said driven member for rotating said driven member about said longitudinal axis. - View Dependent Claims (23)
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24. In a device for removing intraluminal occlusions, the method of simultaneously reciprocating a cutting head longitudinally and rotating the reciprocating cutting head, said method comprising the steps of:
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longitudinally reciprocating said cutting head by applying a pulsating force to said device; and in response to longitudinal reciprocation of said cutting head, directing said cutting head rotationally about its longitudinal axis.
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Specification