Rotational atherectomy system with serrated cutting tip
First Claim
1. A rotational medical device comprising an elongate, flexible tubular body, the body having a proximal end and a distal end, a rotatable drive shaft extending through the body;
- and a rotatable cutter at the distal end of the body and connected to the drive shaft, the cutter comprising an inclined cutting thread extending at least part way around the cutter, the thread being at least partially discontinuous.
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Accused Products
Abstract
An elongate tubular body extends between a rotatable cutter and a control. The cutter is connected to the control with a rotatable element and has a serrated surface. A vacuum is applied through an annular passage defined between the tubular body and the rotatable element. The control has an indicator that reveals resistance to rotation and/or reduction in flow. Material that has been processed by the cutter is aspirated through the tubular body for disposal. The control enables rotation of the rotatable element only following application of a predetermined level of vacuum.
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Citations
32 Claims
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1. A rotational medical device comprising an elongate, flexible tubular body, the body having a proximal end and a distal end, a rotatable drive shaft extending through the body;
- and a rotatable cutter at the distal end of the body and connected to the drive shaft, the cutter comprising an inclined cutting thread extending at least part way around the cutter, the thread being at least partially discontinuous.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- 12. A rotational medical device comprising an elongate, flexible tubular body, having a proximal end and a distal end, a rotatable drive shaft extending through the body, a rotatable cutter positioned at the distal end of the body and coupled to the drive shaft, a control positioned at the proximal end of the body, and an aspiration channel extending axially through the tubular body, the cutter comprising an outer wall having at least one serrated thread extending along a spiral path on the wall.
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16. A rotational medical device comprising an elongate, flexible tubular body, the body having a proximal end and a distal end, a rotatable drive shaft extending through the body;
- and a rotatable cutter at the distal end of the body and connected to the drive shaft, the cutter comprising a cutter body having a proximal end and a distal end, a longitudinal axis of rotation extending between the proximal end and the distal end, a helical thread extending around at least a distal portion of the cutter body, and the thread having at least one serration.
- View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A rotational medical device comprising an elongate, flexible tubular body, the body having a proximal end and a distal end, a rotatable drive shaft extending through the body;
- and a rotatable cutter at the distal end of the body and connected to the drive shaft, the cutter comprising a cutter body having a proximal end and a distal end, a longitudinal axis of rotation extending between the proximal end and the distal end, a helical thread extending around at least a distal portion of the cutter body, and at least one portion of the thread being discontinuous.
- View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32)
Specification