Rotary-catheter for atherectomy
First Claim
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1. An atherectomy system insertable into a human blood vessel for coring and removing an obstruction therein, comprising in combination:
- a flexible guide-wire insertable into said blood vessel,a flexible rotary-catheter defining continuous passage and being rotatably disposed and slidable over said flexible guide-wire, said flexible rotary-catheter having a proximal and distal ends,a rotary coring means for cutting and ingesting obstruction material, located at said distal end,a coupling means for rotating said flexible rotary-catheter around said flexible guide-wire, located at said proximal end,means for diametricaly stabilizing and means for transmitting torque being incorporated in said flexible rotary-catheter.
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Abstract
An atherectomy system insertable into a human blood vessel over a flexible guide-wire for remotely cutting and removing an obstruction therein, having a diametrical stabilized torque transmitting flexible rotary-catheter equipped with a rotary coring means at its distal end and a motor connected to its proximal end.
993 Citations
22 Claims
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1. An atherectomy system insertable into a human blood vessel for coring and removing an obstruction therein, comprising in combination:
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a flexible guide-wire insertable into said blood vessel, a flexible rotary-catheter defining continuous passage and being rotatably disposed and slidable over said flexible guide-wire, said flexible rotary-catheter having a proximal and distal ends, a rotary coring means for cutting and ingesting obstruction material, located at said distal end, a coupling means for rotating said flexible rotary-catheter around said flexible guide-wire, located at said proximal end, means for diametricaly stabilizing and means for transmitting torque being incorporated in said flexible rotary-catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An atherectomy system insertable into a human blood vessel for coring and removing an obstruction therein, comprising in combination:
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a flexible guide-wire insertable into said blood vessel, a flexible rotary-catheter defining continuous passage and being rotatably disposed and slidable over said flexible guide-wire, said flexible rotary-catheter having a proximal and distal ends, a rotary coring means for cutting and ingesting obstruction material, located at said distal end, a coupling means for rotating said flexible rotary-catheter around said flexible guide-wire, located at said proximal end, inclined plane means being located in said continuous passage for assisting the obstruction material in moving proximally therein. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A process for removing from a human blood vessel an obstruction made of a soft blood clot formed on an atherosclerotic plaque, comprising the following steps:
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inserting into the blood vessel a flexible guide-wire and advancing it into the obstruction, inserting into the blood vessel, over the flexible guide-wire, a flexible rotary-catheter having a proximal end and a distal end with a rotary coring means at the distal end, advancing the distal end to mechanically engage and unseat the blood clot while applying suction to the proximal end to ingest the blood clot into the distal end, rotating and advancing the rotary coring means to cut and swallow the atherosclerotic plaque, removing the system with the blood clot and the atherosclerotic plaque from the blood vessel. - View Dependent Claims (22)
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Specification