Medical retrieval device
First Claim
Patent Images
1. A device comprising a core wire having a distal end and a proximal end;
- a catheter shaft having a proximal catheter end, a distal catheter end and a lumen through which the core wire is passed such that the distal end of the core wire extends beyond the distal catheter end;
a retrieval element disposed at the distal end of the core wire, the retrieval element movable from a radially contracted position to a radially expanded position; and
a first stop element attached to the core wire, the first stop element configured to prevent over-expansion of the retrieval element.
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Abstract
Compositions comprising devices for retrieving objects from a subject, for example the subject'"'"'s vasculature, are described. Also described are methods of making and using these devices.
108 Citations
49 Claims
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1. A device comprising
a core wire having a distal end and a proximal end; -
a catheter shaft having a proximal catheter end, a distal catheter end and a lumen through which the core wire is passed such that the distal end of the core wire extends beyond the distal catheter end;
a retrieval element disposed at the distal end of the core wire, the retrieval element movable from a radially contracted position to a radially expanded position; and
a first stop element attached to the core wire, the first stop element configured to prevent over-expansion of the retrieval element. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41)
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2-32. -32. (Cancelled).
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42. A retrieval device comprising
a core wire having a distal end and a proximal end; -
a catheter shaft having a proximal catheter end, a distal catheter end, and a lumen through which the core wire is passed such that the distal end of the core wire extends beyond the distal catheter end;
a retrieval element disposed at the distal end of the catheter shaft, the retrieval element movable from a radially contracted position to a radially expanded position, the retrieval element having a proximal junction attached to the distal catheter end and a distal junction extending distally along the core wire, wherein the proximal and distal junctions have lumens therethrough sized to receive the core wire; and
a stop assembly attached to the core wire, the stop assembly configured to cause expansion of the retrieval element upon proximal movement of the core wire, and contraction of the retrieval element upon distal movement of the core wire;
the stop assembly configured to prevent over-expansion of the retrieval element. - View Dependent Claims (43, 44)
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45. A retrieval device comprising:
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a core wire having a distal end and a proximal end;
a catheter shaft having a proximal catheter end, a distal catheter end and a lumen through which the core wire is passed such that the distal end of the core wire extends beyond the distal catheter end;
a retrieval element disposed about the core wire proximal of the distal end of the core wire, the retrieval element movable from a radially contracted position to a radially expanded position, the retrieval element having a proximal junction and a distal junction; and
a stop element disposed between the proximal and distal junctions of the retrieval element, the stop element configured to prevent over-expansion of the retrieval element. - View Dependent Claims (46, 47, 48, 49)
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Specification