Mechanical clot treatment device
First Claim
1. An embolism treatment device comprising a core element and a cage assembly:
- a. said core element having a distal end and a proximal end and comprising at least a rotatable core wire adapted to pass through, to be rotatable with respect to, and to be non-removable from said cage assembly, andb. said cage assembly having a distal end and a proximal end, and comprising a super-elastic alloy braid substantially coaxial to said core element, said cage assembly coaxial to said core element and having a first deployment shape and a second larger expanded shape, said second larger expanded shape being different from the first deployment shape, and said cage assembly distal end being rotatably attached to said rotatable core wire.
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Accused Products
Abstract
This is a medical device. In particular, it is a surgical device usually delivered through an intravascular catheter. It may be used in several ways. It may, for instance, be used to open a clear passageway adjacent thrombus to allow both blood and medication to bypass the clot. It may be used to pierce and to remove thrombus. These thrombus are often found in tortuous vasculature. The device includes several sections. The device has a core element, typically a core wire. Placed around the distal end of the core element is a collapsible but preferably self expanding cage assembly. The cage assembly is preferably radio-opaque. The proximal end of the cage is typically is affixed to an actuator in such a way as to allow expansion of the cage after deployment. The cage assembly may have a generally conical distal or "trailing" portion when expanded and also a proximal section. The cage assembly may be used for collecting emboli or for displacing them to allow blood flow to resume. The proximal section may have various uses, e.g., for centering the collector assembly in the vascular lumen or for gathering larger amounts of the targeted clot or to act as a passageway for fluid flow. The assembly further may have an actuator which permits or causes the collector assembly to expand after deployment.
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Citations
35 Claims
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1. An embolism treatment device comprising a core element and a cage assembly:
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a. said core element having a distal end and a proximal end and comprising at least a rotatable core wire adapted to pass through, to be rotatable with respect to, and to be non-removable from said cage assembly, and b. said cage assembly having a distal end and a proximal end, and comprising a super-elastic alloy braid substantially coaxial to said core element, said cage assembly coaxial to said core element and having a first deployment shape and a second larger expanded shape, said second larger expanded shape being different from the first deployment shape, and said cage assembly distal end being rotatably attached to said rotatable core wire. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. An embolism treatment device comprising:
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(a) a core wire element having a distal end and a proximal end and a longitudinal axis; (b) a cage assembly comprising at least one spirally wound, metallic member having a distal end and a proximal end, wherein said cage assembly is generally coaxial to said core wire element and wherein said distal end of said cage assembly is fixedly attached to said core wire element; (c) an actuator fixedly attached to said proximal end of said spirally wound metallic member; and (d) a radiopaque tip fixedly attached to said core wire element distally of said cage assembly, wherein said cage assembly has a first deployment shape when said actuator is in a first deployment position and a second larger expanded shape different from the first deployment shape when said actuator is in a second deployment position. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification