Surgical instrument adapter with highly secure locking shaft mechanism

摘要

A highly secure instrument adapter includes a handle with an internal locking and release mechanism which does not use a pushing release and which requires little physical effort to lock and release, yet provides a stable and secure connection between an instrument and the handle. The locking mechanism is comprised an ergometric handle having an open handle cavity, a receiver having an internal threaded tubular body and a plurality of locking apertures, and a rotating collar having a limited range of rotation, a plurality of fingers that project outward from the flattened surface on a spacer structure, and a plurality of circular apertures placed alternately between said fingers.

主权项

1. A highly secure instrument adapter apparatus comprised of:
an ergometric handle having an open handle cavity; a receiver having an internal threaded tubular body and a plurality of locking apertures; a rotating collar having a limited range of rotation comprising a plurality of fingers that project outward from a flattened surface on a spacer structure, and a plurality of circular apertures placed alternately between said plurality of fingers; an interconnected tube and a handle core; a stabilizing ball bearing assembly positioned inside said receiver; a locking ball bearing positioned inside said ergometric handle, said receiver and said rotating collar; and a thrust washer connected to said rotating collar, wherein each finger of said plurality of fingers is flexibly connected to said rotating collar by said spacer structure, and at least one of said plurality of fingers begins to flex outward from an instrument shaft as said locking ball bearing moves from a lead-in surface portion of one of said plurality of fingers through a ramp surface portion of said one of said plurality of fingers and to a locking engagement portion of said one of said plurality of fingers, increasing the amount of force required to rotate said rotating collar.