Method and device for locating guidewire and treating chronic total occlusions

a technology of guidewires and total occlusions, applied in the field of medical devices and methods, can solve problems such as controllable atherectomy
US20010031981A1Inactive Publication Date: 2001-10-18TYCO HEALTHCARE GRP LP
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
TYCO HEALTHCARE GRP LP
Publication Date
2001-10-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

Devices, methods, kits, and methods remove obstructive material from the vasculature and other body lumens. Expansible baskets may be used as cooperating radially expansible shearing members. Helically oriented struts of each basket may wind in a uniform circumferential direction. The struts can be independently flexible, allowing the shearing members to flex axially together. The inner basket may be rotatably driven and may use an axial pump extending proximally from the shearing members and / or a distal penetrator for advancing into an occlusion which inhibits guidewire access. The struts may slide substantially continuously across each other, and may be sufficiently aggressive for highly effective thrombectomy. A rotationally static and axially flexible outer basket may provide a safe, limited atherectomy treatment.
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Description

CROSS-REFERENCES TO RELATED APPLICATIONS

[0001] The present application claims the benefit of priority from Provisional application Ser. No. 60 / 193,539 filed Mar. 31, 2000 (Attorney Docket No. 19744P-001000US), and from Provisional application Ser. No. 60 / 260,170 filed Jan. 4, 2001 (Attorney Docket No. 19744P-001200), the fall disclosures of which are incorporated herein by reference.

[0002] 1. Field of the Invention

[0003] The present invention relates generally to medical devices and methods. In one embodiment, the present invention relates to devices and methods for disrupting, collecting, and removing thrombus and / or other occlusive material from blood vessels and other body lumens. In other embodiments, the present invention relates to devices and methods for placement of guidewires, often for subsequent removal of unwanted tissue, thrombus, atheroma, fluid, polyps, cysts or other obstructive matter from natural and artificial body lumens such as blood vessels, grafts, implanted s...

Claims

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