×

Expandable and compressible atherectomy cutter

  • US 5,556,408 A
  • Filed: 04/27/1995
  • Issued: 09/17/1996
  • Est. Priority Date: 04/27/1995
  • Status: Expired due to Term
First Claim
Patent Images

1. An atherectomy cutter which comprises:

  • a rotatable torque tube having a lumen, said torque tube having a distal end;

    a proximal hub mounted at said distal end of said torque tube for rotation therewith;

    a distal hub positioned distally from said proximal hub at a predetermined separation therefrom;

    a plurality of resilient blades, each said blade having a distal end connected to said distal hub and a proximal end connected to said proximal hub, said blades defining a cutting radius, said cutting radius being resiliently compressible with a corresponding increase in said predetermined separation between said proximal hub and said distal hub; and

    a flexible conically-shaped funnel tapered with an increasing cross-section in a distal direction and formed with an interior surface, said funnel extending distally from said distal end of said torque tube and attached thereto in fluid communication with said lumen of said torque tube at least a portion of each said blade being positioned within said funnel and against said interior surface.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×