Methods and devices for rotating an active element and an energy emitter on a catheter
First Claim
Patent Images
1. A method of rotating an element and an energy emitting element on a catheter, comprising the steps of:
- providing a catheter having an elongate body, a rotating element and an energy emitting element, the rotating element including a first elongate shaft having a lumen therein, the energy emitting element being mounted to a second elongate shaft which is positioned in the lumen of the first elongate shaft, the rotating element and energy emitting element being free of attachments to one another for a length of at least 10 cm from the energy emitting element;
advancing the catheter through a blood vessel to a vascular location;
rotating the rotating element and the energy emitting element;
emitting energy from the energy emitting element during the rotating step; and
receiving energy at the catheter which was emitted by the energy emitting element and reflected back from the tissue to the catheter.
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Abstract
A tissue cutting device includes a sizing element which detects the diameter of the vessel in which the cutting device is positioned. The sizing element is coupled to the cutting element so that the amount of the cutting element that is exposed varies in response to movement of the sizing element.
290 Citations
16 Claims
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1. A method of rotating an element and an energy emitting element on a catheter, comprising the steps of:
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providing a catheter having an elongate body, a rotating element and an energy emitting element, the rotating element including a first elongate shaft having a lumen therein, the energy emitting element being mounted to a second elongate shaft which is positioned in the lumen of the first elongate shaft, the rotating element and energy emitting element being free of attachments to one another for a length of at least 10 cm from the energy emitting element; advancing the catheter through a blood vessel to a vascular location; rotating the rotating element and the energy emitting element; emitting energy from the energy emitting element during the rotating step; and receiving energy at the catheter which was emitted by the energy emitting element and reflected back from the tissue to the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A catheter having a rotating element and a rotating energy emitter, comprising:
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an elongate body having a lumen; a rotating element coupled to the elongate body, the rotating element being coupled to a first elongate shaft positioned in the lumen of the elongate body, the first shaft also having a lumen therein; and an energy emitting element coupled to the body, the energy emitting element being mounted to a second elongate shaft which is positioned in the lumen of the first elongate shaft, the energy emitting element being free to of attachments to one another for a length of at least 10 cm from the energy emitting element. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification