Surgical cutting instrument
First Claim
Patent Images
1. A surgical instrument that is constructed for inserting into a body, cutting tissue therein, and extracting an elongated object therefrom comprising:
- a flexible sheath including a sheath distal end opening, and a sheath hollow passageway positioned longitudinally in the sheath;
a flexible elongated member rotatably positioned within the sheath hollow passageway, and an elongated hollow passageway positioned longitudinally therethrough for receiving the object; and
a circumferential cutting instrument with a hole therethrough attached to the elongated member at the sheath distal end, the cutting instrument being rotatable and extendable in relation to the sheath by rotation of the elongated member.
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Accused Products
Abstract
A surgical cutting instrument for removing objects, such as a pacemaker lead or catheter, embedded in biological tissue. The cutting instrument includes a rigid proximal end and a flexible distal end, the flexible distal end having circular opening and a cutting blade disposed longitudinally therein. A control handle connected to the rigid proximal end and extending radially therefrom provides a force applied to an inner member which extends the cutting blade beyond the circular opening and simultaneously rotates the cutting blade to cut tissue exposed to the blade.
150 Citations
9 Claims
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1. A surgical instrument that is constructed for inserting into a body, cutting tissue therein, and extracting an elongated object therefrom comprising:
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a flexible sheath including a sheath distal end opening, and a sheath hollow passageway positioned longitudinally in the sheath; a flexible elongated member rotatably positioned within the sheath hollow passageway, and an elongated hollow passageway positioned longitudinally therethrough for receiving the object; and a circumferential cutting instrument with a hole therethrough attached to the elongated member at the sheath distal end, the cutting instrument being rotatable and extendable in relation to the sheath by rotation of the elongated member. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of removing a pacemaker lead from a body comprising:
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inserting a free end of the lead into a hollow passageway of an elongated member, the elongated member being rotatably positioned within a hollow passageway of a sheath, and the elongated member having a distal end with a cutting instrument therein; continuing to insert the lead into said elongated member hollow passageway so that the elongated member and sheath pass into the body, until stopped by an obstruction attaching the lead to the body; concurrently extending and rotating the cutting instrument by rotating the elongated member in relation to the sheath to cut said obstruction. - View Dependent Claims (8, 9)
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Specification