Modular surgical tool systems

摘要

Modular surgical instruments are disclosed. In various embodiments, a modular surgical instrument t is disclosed for use with a plurality of interchangeable surgical tool heads that are configured to perform different surgical actions. The instrument is configured to apply a plurality of different rotary drive motions and axial drive motions depending upon the type of surgical tool head attached thereto.

主权项

1. A modular circular surgical instrument comprising:
an actuator for generating an actuation motion; an actuation system configured to generate a plurality of discrete rotary drive motions in response to an application of said actuation motion thereto; and an elongated shaft assembly operably interfacing with said actuation system and configured to be interchangeably attached to a plurality of different surgical tool heads such that upon attachment of a first one of said surgical tool heads thereto, said elongated shaft assembly is caused to interact with said actuation system to impart a first one of said discrete rotary drive motions to said first surgical tool head upon said application of said actuation motion to said actuation system and when a second one of said surgical tool heads is attached to said elongated shaft assembly, said elongated shaft assembly is caused to interact with said actuation system to impart a second one of said discrete rotary drive motions to said second surgical tool head upon said application of said actuation motion to said actuation system, wherein said actuation system is selectively movable between a rotary drive position and an axial drive position, and wherein said elongated shaft assembly comprises:
a rotary drive shaft selectively interfacing with said actuation system and configured to operably interface with said first and second surgical tool heads to apply said discrete rotary motions thereto when said first and second surgical tool heads are interchangeably attached to said elongated shaft assembly; andan axial drive shaft selectively interfacing with said actuation system, wherein upon attachment of a third one of said surgical tool heads to said elongated shaft assembly, said elongated shaft assembly is configured to apply an axial drive motion thereto upon said application of said actuation motion to said actuation system, wherein said actuation system comprises a gear plate having a first gear rack thereon and a second gear rack thereon and being selectively movable between said rotary drive position and said axial drive position, wherein said rotary drive shaft has first and second pinion gears thereon and is axially movable relative to said gear plate such that upon attachment of said first surgical tool head to said elongated shaft assembly, said rotary drive shaft is moved by said first surgical tool head to a first axial position, wherein said first pinion gear is in substantial meshing alignment with said first gear rack and when said second surgical tool head is attached to said elongated shaft assembly, said rotary drive shaft is moved by said second surgical tool head to a second axial position, and wherein said second pinion gear is in substantial meshing alignment with said second gear rack.