Embolus extractor
First Claim
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1. An embolus extractor, comprising:
- an elongate shaft having a proximal end and a distal end;
a plurality of primary struts, each strut having a proximal end and a distal end coupled to the distal end of the shaft;
the primary struts having a first position and a second position, wherein in the first position, the distal ends and the proximal ends of the primary struts are spaced at a first distance, and in the second position the distal ends and the proximal ends of the struts are spaced at a second distance, the second distance being less than the first distance;
wherein in the second position, a proximal portion of the primary struts define a generally circular mouth and the primary struts extend generally distally from the mouth to form a generally distally tapering filter body; and
a plurality of secondary struts coupled to the shaft;
wherein the secondary struts have a proximal end and a distal end;
further wherein the primary struts and the secondary struts are differentiated by at least one of their points of coupling to the distal end of the shaft and their relative strut diameters.
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Abstract
An embolus extractor including elongate shaft having a proximal end and a distal end. The embolus extractor may include primary struts coupled to the distal end of the shaft. The struts may define a proximally disposed mouth. Additional secondary struts may be coupled along the elongate shaft to enhance the thrombus containing ability of the embolus extractor.
69 Citations
30 Claims
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1. An embolus extractor, comprising:
an elongate shaft having a proximal end and a distal end; a plurality of primary struts, each strut having a proximal end and a distal end coupled to the distal end of the shaft; the primary struts having a first position and a second position, wherein in the first position, the distal ends and the proximal ends of the primary struts are spaced at a first distance, and in the second position the distal ends and the proximal ends of the struts are spaced at a second distance, the second distance being less than the first distance; wherein in the second position, a proximal portion of the primary struts define a generally circular mouth and the primary struts extend generally distally from the mouth to form a generally distally tapering filter body; and a plurality of secondary struts coupled to the shaft; wherein the secondary struts have a proximal end and a distal end; further wherein the primary struts and the secondary struts are differentiated by at least one of their points of coupling to the distal end of the shaft and their relative strut diameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An embolus extractor, comprising:
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an elongate shaft having a proximal end and a distal end; a first strut having a proximal end and a distal end, the proximal end of the strut being coupled to the shaft; the strut having a first position and a second position, wherein in the first position, the distal end and the proximal end of the strut are spaced at a first distance, and in the second position, the distal end and the proximal end of the strut are spaced at a second distance being less than the first distance; wherein in the second position, a proximal portion of the first strut defines a generally circular mouth and the strut extends generally distally from the mouth to form a generally distally tapering filter body; and one or more additional struts coupled to the shaft, wherein at least one of the additional struts has a transverse cross-sectional area;
wherein the first strut has a transverse cross-sectional area greater than the cross-sectional area of at least one of the additional struts. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30)
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Specification