Atherectomy system with a biasing sleeve and method of using the same
AssigneeSurgical Systems & Instruments, Inc.
InventorSamuel Shiber
Life of this patent
Estimating the term…
Abstract
An atherectomy system for removing an obstruction from within a patient's vessel, comprising a flexible guide-wire insertable into the vessel, a flexible catheter for coring and ingesting obstruction material, insertable into the vessel over the flexible guide-wire, the flexible catheter having a coring device at its distal end and coupling device for connecting it to a power source, at its proximal end, a sleeve in which the flexible catheter is slidably disposed, the sleeve having an elongated tongue extending from its distal end, the tongue defining inside the vessel an eccentrically biased trajectory for the coring device to move along.
Claims24
An atherectomy system for coring, ingesting and removing an obstruction from within a patient's vessel, comprising in combination:
- a flexible guide-wire insertable into the vessel,
- a flexible rotary catheter, rotably disposed and insertable into the vessel over said flexible guide-wire, having at its distal end a rotary coring means for making a circular cut in an obstruction located in front of it, and coupling means at its proximal end,
- a continuous passage, for ingesting the cored obstruction material, defined between said flexible rotary catheter and said flexible guide-wire, where the relative motion between said flexible rotary catheter and said flexible guide-wire assists in moving said ingested obstruction material proximally in said continuous passage, and,
- a sleeve in which said flexible catheter is slidably disposed, said sleeve having an elongated tongue extending from its distal end, said tongue defining inside said vessel an eccentrically biased trajectory for said coring means to move along.
An atherectomy system as in claim 41, wherein said distal barrier means are selectively expandable.
A proces for removing an obstruction from a vessel with an atherectomy system, comprising the following steps:
- inserting into a vessel, into an obstruction, a flexible guide-wire,
- advancing over the flexible guide-wire a flexible chamber equipped with coring means at its distal end and a sleeve having a tongue extending from its distal end,
- placing said tongue along the obstruction,
- advancing the coring means to the obstruction,
- advancing the flexible catheter and coring along an eccentrically biased trajectory defined by the tongue while coring and ingesting into the flexible catheter the obstruction material,
- removing the flexible catheter and ingested obstruction material out of the vessel.
A process for removing an obstruction from a vessel with an atherectomy system, comprising the following steps:
- inserting into a vessel, into an obstruction, a flexible guide-wire,
- advancing over the flexible guide-wire a coring means and coring an initial lumen in the obstruction,
- retracting the coring means from said initial lumen,
- inserting a tongue into said initial lumen,
- advancing the flexible catheter and coring along an eccentrically biased trajectory defined by the tongue while coring and ingesting into the flexible catheter the obstruction material, to enlarge the initial lumen.
Dependencies are inferred from the claim text.