Catheters with telescoping cutting tool and aspiration

A method for atherectomy or thrombectomy procedure, comprising:

• advancing an intravascular cutting tool to an intervention site of a blood vessel, the intravascular cutting tool comprising:
• a catheter body, and
• a telescoping cutting assembly comprising an outer blade coupled to and extending distally from the catheter body and at least one inner blade positioned radially inward of the outer blade, the at least one inner blade being axially moveable between a retracted configuration and a cutting configuration, wherein the at least one inner blade extends distally beyond the outer blade when in the cutting configuration than in the retracted configuration, and wherein the outer blade and the at least one inner blade cooperatively define a tapered cutting profile;
• advancing the at least one inner blade to the cutting configuration;
• and
• reciprocating the at least one inner blade proximally and distally or rotating the telescoping cutting assembly to cut a lesion at the intervention site.

A system for atherectomy or thrombectomy procedure, comprising:

• an intravascular cutting tool, comprising:
• a catheter body defining an aspiration lumen extending through the catheter body, and
• a telescoping cutting assembly comprising an outer blade coupled to and extending distally from the catheter body and at least one inner blade positioned radially inward of the outer blade, the at least one inner blade being axially moveable between a retracted configuration and a cutting configuration, wherein the at least one inner blade extends more distally beyond the outer blade when in the cutting configuration than in the retracted configuration, and wherein the outer blade and the at least one inner blade cooperatively define a tapered cutting profile;
• and
• an aspiration stylet advanceable through the aspiration lumen and an opening through the telescoping cutting assembly.