ANGIOPLASTY DEVICE WITH EMBOLIC FILTER
First Claim
Patent Images
1. A frame for supporting an embolic filter, comprising:
- a first ring;
a second ring coaxial with and spaced apart from the first ring;
a first plurality of generally parallel struts having a first end adjacent the first ring and a second end extending toward the second ring;
a second plurality of generally parallel struts having a first end adjacent the second ring and a second end extending toward the first ring;
a first plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the first plurality of interconnected oval members joining the first end of each of the first plurality of struts to the first ring;
a second plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the second plurality of interconnected oval members joining the first end of each of the second plurality of struts to the second ring; and
a third plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the first plurality of interconnected oval members joining the second end of each of the first plurality of struts to the second end of a corresponding one of the second struts;
whereby the oval members form locations of weakness at which the frame can bend; and
whereby the oval members can elongate to permit expansion of the frame.
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Abstract
An angioplasty device has a filter associated with it to capture embolic particles that may be broken free during an angioplasty procedure. In one embodiment the embolic filter has a frame in which struts are connected to end rings and to each other by a plurality of interconnected oval members. In another embodiment the device includes an actuator at the proximal end of an actuator wire. By rotating a knob on the device, the physician can smoothly tension the wire by a predetermined amount to prevent the filter from opening too much or too little. Various other embodiments of filter frames are also disclosed.
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Citations
1 Claim
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1. A frame for supporting an embolic filter, comprising:
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a first ring; a second ring coaxial with and spaced apart from the first ring; a first plurality of generally parallel struts having a first end adjacent the first ring and a second end extending toward the second ring; a second plurality of generally parallel struts having a first end adjacent the second ring and a second end extending toward the first ring; a first plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the first plurality of interconnected oval members joining the first end of each of the first plurality of struts to the first ring; a second plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the second plurality of interconnected oval members joining the first end of each of the second plurality of struts to the second ring; and a third plurality of sets of interconnected oval members defining openings generally perpendicular to the struts, a set of the first plurality of interconnected oval members joining the second end of each of the first plurality of struts to the second end of a corresponding one of the second struts; whereby the oval members form locations of weakness at which the frame can bend; and whereby the oval members can elongate to permit expansion of the frame.
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Specification