Aneurysm treatment coils
AssigneeCovidien LP
InventorsVince Divino, Richard Rhee, Rich Kusleika
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Abstract
Systems and devices for endovascular treatment of intracranial aneurysms are described. Various configurations of coiled implants may be used as stenting devices or aneurysm coils. The implants include one or more filaments wound about a longitudinal axis to form a generally tubular shape. Lateral flexibility of the implants may be manipulated by, for example, adjusting a pitch between adjacent filaments, using different materials for the filaments, employing different filament cross-sectional shapes, grouping filaments into pluralities of varying flexibilities, and nesting inner coils within outer coils.
Claims7
A method for delivering a coiled implant to an aneurysm, the method comprising:
- positioning at least a portion of the coiled implant within the aneurysm, the coiled implant comprising a first coil having a first stiffness, a second coil within the first coil and having a second stiffness different than the first stiffness, and a third coil within the second coil;
- and
- torqueing the coiled implant such that the second coil expands and the third coil contracts.
Dependencies are inferred from the claim text.