Device and method for emboli retrieval
First Claim
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1. A catheter device for capturing and retrieving emboli from a blood vessel, said catheter device comprising:
- an elongate catheter body having a proximate end and a distal end;
a strainer mounted at the distal end of the catheter body, said strainer comprising a plurality of tines which are shiftable between an opened configuration where they are capable of capturing emboli and a closed configuration where they are capable of retaining captured emboli, said tines having inwardly curved tips; and
means actuable from the proximate end for selectively shifting the tines of the strainer between the opened configuration and the closed configuration.
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Abstract
A vascular catheter includes a strainer device at its distal end. The strainer device is collapsible, capable of assuming both an open configuration where it is able to capture emboli when emplaced in a blood vessel, and a closed configuration where it is able to retain any captured emboli within its confines. The catheter of the present invention is normally utilized in conjunction with conventional angioplastic treatment techniques. By locating the strainer device downstream from the site of the angioplastic treatment, any emboli which are released during such treatment may be captured and removed from circulation.
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Citations
13 Claims
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1. A catheter device for capturing and retrieving emboli from a blood vessel, said catheter device comprising:
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an elongate catheter body having a proximate end and a distal end; a strainer mounted at the distal end of the catheter body, said strainer comprising a plurality of tines which are shiftable between an opened configuration where they are capable of capturing emboli and a closed configuration where they are capable of retaining captured emboli, said tines having inwardly curved tips; and means actuable from the proximate end for selectively shifting the tines of the strainer between the opened configuration and the closed configuration. - View Dependent Claims (2, 3, 4)
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5. A method for percutaneous transluminal angioplasty, said method comprising:
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introducing a first vascular catheter to a stenosed region within a vascular system; introducing a second vascular catheter to a location in the vascular system downstream from the stenosed region; treating the stenosed region with the first vascular catheter, whereby emboli may be shed into circulation within the vascular system; capturing the emboli with the second vascular catheter; and withdrawing the second vascular catheter with the captured emboli. - View Dependent Claims (6, 7, 8, 9, 10)
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11. A catheter device for capturing and retrieving emboli from a blood vessel, said catheter device comprising:
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an elongate catheter body having a proximate end, a distal end, and an axial lumen extending between said proximate and distal ends; a wire extending through the lumen and having proximate and distal ends; and a conical strainer having an apex secured to the distal end of the wire, said strainer being collapsible so that it assumes an opened configuration when extended out from the distal end of the catheter body and a closed configuration when retracted into the distal end of the catheter body, wherein the conical strainer comprises a plurality of generally axial members having inwardly curved tips at their distal ends and are secured together at the apex. - View Dependent Claims (12, 13)
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Specification