Filter for embolic material mounted on expandable frame and associated deployment system
First Claim
1. 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 guide wire being freely movable, both rotatably and longitudinally, with respect to said expandable frame except distally beyond said stop;
a releasable latch formed by said stop and a complementary latch lock, said complementary latch lock formed on the distal frame end, said releasable latch permitting radial deployment and radial closure of said frame based upon movement of said guide wire relative to said frame.
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Accused Products
Abstract
The filter device captures embolic material in a blood vessel and is placed in the blood vessel via a guide wire. The guide wire has a proximal end, a distal end and a stop near its distal end. The filter device includes an expandable frame of frame struts having a closed, radially compact form and an open, radially expanded form. The frame, in the radially expanded form, has frame struts forming a pair of facing frustoconical frame structures. Filter material is attached to one of the pair of frustoconical frame structures. In one embodiment, the filter material is a perforated membrane. The guide wire extends through the expandable frame and the expandable frame is freely movable over the guide wire (likewise, the guide wire is freely movable within the frame), both rotatably and longitudinally, except distally beyond the stop near the distal end of the guide wire. This mobility of the guide wire with respect to the expandable frame enables to guide wire to be guided by the operator through the blood vessel.
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Citations
32 Claims
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1. A controllable deployment system for a radially expandable frame utilized during catheterization comprising:
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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 guide wire being freely movable, both rotatably and longitudinally, with respect to said expandable frame except distally beyond said stop;
a releasable latch formed by said stop and a complementary latch lock, said complementary latch lock formed on the distal frame end, said releasable latch permitting radial deployment and radial closure of said frame based upon movement of said guide wire relative to said frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification