Patent ID: 7635363

Claim:
An apparatus for use in a treatment modality including an enlargement procedure to be performed within a patient, said apparatus comprising a catheter for being directed through internal passageways in the patient, said catheter having a proximal end and a distal end, a proximal portion adjacent to said proximal end and a distal portion adjacent to said distal end, and a first and at least a second generally parallel lumen, said first and said second lumens extending between said proximal and distal portions, and a cutting wire for performing the enlargement procedure extending through said second lumen for operating at said distal portion in response to manipulations at said proximal end, said cutting wire having a distal end attached to said catheter at the distal end of said second lumen, a portion thereof external to said catheter along a length coextensive with a portion of said distal portion of said catheter and a handle for operating said cutting wire from a point proximal of said catheter, a rotatable coupling attaching said handle to said catheter allowing said handle to rotate relative to said proximal end of said catheter while engaging and rotating a proximal end of said cutting wire whereby said distal portion of said catheter rotates as a result of said rotation of said handle; a locking mechanism for locking an orientation of a distal portion of said cutting wire, a rotation lock which inhibits further rotation of said handle relative to said proximal end of said catheter, and a rotation indicator configured to indicate an amount of rotation of said handle relative to said proximal end of said catheter, said rotation indicator comprising a visual indicator of said amount of rotation and an index marking.