Intralumenal material removal systems and methods
First Claim
1. An intralumenal material removal device comprising a rotatable cutter assembly in communication with a drive shaft for receiving rotational torque from the drive shaft, the cutter assembly comprising an adjustable diameter cutter having a plurality of rotatable, fan-shaped cutting blades, wherein each of the cutting blades has a beveled edge for cutting, and wherein each of the cutting blades is individually rotatable around its own axis of rotation between a smaller diameter tangential orientation and a larger diameter radial orientation, and wherein each axis is circumferentially spaced around a central longitudinal axis.
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Accused Products
Abstract
The intralumenal material removal system includes a cutter assembly positionable in the lumen of a mammalian subject and operably connected to system controls. The cutter assembly is axially advanceable by translating the drive shaft and rotatable by rotating the drive shaft. One cutter assembly comprises an adjustable cutter that is adjustable between a smaller diameter condition and a larger diameter condition by rotation of the drive shaft in opposite directions. The cutter may thus be introduced to and withdrawn from the material removal site in a retracted, smaller diameter condition that facilitates translation and navigation of the device through various lumens. The adjustable cutting assembly may be selectively expanded at the material removal site to facilitate cutting, removal and aspiration of the occlusive material. One composite cutter assembly comprises both a distal, fixed diameter cutter and a proximal adjustable diameter cutter.
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Citations
27 Claims
- 1. An intralumenal material removal device comprising a rotatable cutter assembly in communication with a drive shaft for receiving rotational torque from the drive shaft, the cutter assembly comprising an adjustable diameter cutter having a plurality of rotatable, fan-shaped cutting blades, wherein each of the cutting blades has a beveled edge for cutting, and wherein each of the cutting blades is individually rotatable around its own axis of rotation between a smaller diameter tangential orientation and a larger diameter radial orientation, and wherein each axis is circumferentially spaced around a central longitudinal axis.
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10. An intralumenal material removal device comprising:
- a rotatable cutter assembly operably coupled to a distal end of a rotatable drive shaft, the cutter assembly comprising an expandable diameter cutter having a plurality of blades, each of the blades mounted for pivoting between a tangential orientation and a radial orientation without causing the blades to flex.
- View Dependent Claims (11, 12, 13, 14)
Specification