US 2001/0041908 A1 · Locking frame, filter and deployment system

Abstract

The controllable deployment system for a radially expandable frame utilized during catheterization includes a guide wire with a stop, a radially expandable frame through which the guide wire freely passes, an elongated actuation sleeve over the guide wire, and a friction locking mechanism located at the proximal end of the system. The expandable frame has a closed, radially compact form and an open, radially expanded form. The proximal end of the frame is coupled to an actuator sleeve. The actuator sleeve, at its proximal end, includes a friction locking mechanism having locking members with respective locking surfaces. The locking mechanism permits the user to lock or hold static the actuator sleeve (and therefore, the expandable frame) with respect to the guide wire, typically in an open, radially expanded form and a closed form. Tactile markers or indicia may be included.

Claims23

Dependent claims

A filter device for capturing embolic material in a blood vessel and running over a guide wire having a proximal end, a distal end and a stop near said distal end, said filter device comprising:

an expandable frame of frame struts having a closed, radially compact form and an open, radially expanded form, said frame of frame struts in said radially expanded form forming a pair of facing frustoconical frame structures, said expandable frame adapted to be movably mounted on and travel on said guide wire;
a filter material attached to one of said pair of frustoconical frame structures;
and
said expandable frame being adapted to be freely movable over said guide wire, both rotatably and longitudinally except distally beyond said stop;
and
an actuator sleeve adapted to run over said guide wire, said actuator sleeve enabling longitudinal compression of said expandable frame and frame struts thereby causing said frame to radially expand and deploy said filter material, and said actuator sleeve including means for temporarily latching said sleeve and expandable frame in one of a compressed state and a filter deployed state.

3 more elements

A controllable deployment system for a radially expandable frame utilized during catheterization comprising:

a guide wire having a proximal end, a distal end and a stop near said distal end;
a radially expandable frame having a closed, radially compact, elongated form and an open, radially expanded, longitudinally foreshortened form, said frame having distal and proximal frame ends;
said guide wire extending through said expandable frame and said expandable frame being freely movable, both rotatably and longitudinally, with respect to said guide wire except distally beyond said stop;
an elongated actuation sleeve having a distal end, a proximal end, and a lumen through which passes said guide wire, said distal sleeve end coupled to said proximal frame end;
a locking mechanism having a first locking member with a radially inboard locking surface disposed on said actuator sleeve at said proximal end, and a second locking member with a radially outboard locking surface disposed on said guide wire at said proximal end, said locking members respectively positioned on said actuator sleeve and said guide wire such that said locking surfaces establish a friction locking interface during one of radial expansion or radial closure of said expandable frame.

2 more elements

Dependencies are inferred from the claim text.

Locking frame, filter and deployment system

Life of this patent

Locking frame, filter and deployment system

Life of this patent

Abstract

Claims23