Expansible shearing catheters for thrombus and occlusive material removal
First Claim
1. A component for use in a catheter device for removal of obstructive material from the lumen of a body conduit, said component comprising:
- first and second end portions having a longitudinal axis therebetween;
a middle portion having at least one second cross sectional diameter and further comprising one or more flexible struts around the circumference of said longitudinal axis and extending between, but not along, said first end portion and said second end portion; and
wherein said middle portion and said end portions are formed from a continuous tube.
6 Assignments
0 Petitions
Accused Products
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.
107 Citations
23 Claims
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1. A component for use in a catheter device for removal of obstructive material from the lumen of a body conduit, said component comprising:
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first and second end portions having a longitudinal axis therebetween;
a middle portion having at least one second cross sectional diameter and further comprising one or more flexible struts around the circumference of said longitudinal axis and extending between, but not along, said first end portion and said second end portion; and
wherein said middle portion and said end portions are formed from a continuous tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A component for use in a catheter device for removal of obstructive material from the lumen of a body conduit, said component comprising:
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first and second end portions having a longitudinal axis there between;
a middle portion having a plurality of struts forming a helix around the circumference of said longitudinal axis and extending between but not including, said first end portion and said second end portion, wherein said middle portion and said end portions are formed from a continuous tube. - View Dependent Claims (21, 22, 23)
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Specification