ROTATIONAL ATHERECTOMY DEVICE WITH EXCHANGEABLE DRIVE SHAFT AND MESHING GEARS

摘要

An atherectomy device with an exchangeable drive shaft is disclosed, having a drive shaft gear at a distal end of the exchangeable drive shaft for meshing engagement with a prime mover gear on the output shaft of the prime mover. The exchangeable drive shaft is inserted into an opening at the distal end of the handle housing and moved axially in a proximal direction. Surface features on at least the prime mover housing and the engageable drive shaft help to align the drive shaft gear with the prime mover gear for meshing engagement.

主权项

1. A device, comprising:
a drive shaft cartridge, comprising:
a nosecone;an elongated support member;a drive shaft gear rotatably coupled with the support member proximate a proximal end thereof; anda telescoping lumen extending proximally from an opening at a distal end of the nosecone and through a proximal end thereof, the telescoping lumen comprising a proximal end coupled with the support member proximate the proximal end thereof and coaxial with the drive shaft gear, wherein at least a portion of the telescoping lumen is coupled with and supported by the support member; a handle, comprising an opening at a distal end thereof, the opening configured for passage therethrough of the support member; and a first connector for removably coupling the drive shaft cartridge and the handle with each other, the first connector comprising complementary first and section sections, wherein
the first section is integrally formed with the proximal end of the nosecone; andthe second section is integrally formed with the distal end of the handle.