Universal keyless guided surgery system

A combined osteotome and depth stop assembly for forming a hole of predetermined depth and orientation in a host material, comprising:

• a shank establishing a longitudinal axis of rotation, said shank having an elongated cylindrical shape defining a shank diameter and extending between an upper distal end and a lower transition end, an annular groove disposed at a predetermined intermediate axial location along said shank between said distal and transition ends, a domed transition formed at said transition end of said shank, said domed transition having a diameter greater than said shank diameter,
• a body extending from said domed transition, said body having an apical end remote from said shank, a plurality of flutes disposed about said body,
• an interface selectively connectable to said shank with a lateral coupling motion, said interface having a partially tubular shape defining an interior region, said interface extending axially between top and bottom ends thereof, a lateral pocket extending continuously through interface from said top end to said bottom end and intersecting said interior region to enable the lateral coupling motion connection of said interface to said shank, a spur disposed on said interior region and configured to engage with said groove in said shank, said interface including a cap flange adjacent said top end, a skirt extending axially from said cap flange toward said bottom end, said skirt having a relief disposed adjacent said cap flange,
• a tubular key having an upper end and a lower end, a stop ring formed at said lower end, said key having an inner diameter and an outer diameter,
• said inner diameter of said key being sized for interference fit around said skirt and clearance fit surrounding said relief, and said upper end of said key configured to seat against said cap flange.

A combined osteotome and depth stop assembly for forming a hole of predetermined depth and orientation in a host material, comprising:

• a shank establishing a longitudinal axis of rotation, said shank having an elongated cylindrical shape defining a shank diameter and extending between a upper distal end and a transition end, a drill motor engaging interface disposed at said upper distal end of said shank, an annular groove disposed at a predetermined intermediate axial location along said shank between said upper distal and transition ends, said groove having inset corners, said groove having a longitudinal length in the range of about 10% to 100% of said shank diameter, a domed transition formed at said transition end of said shank, said domed transition having a diameter greater than said shank diameter,
• a body extending from said domed transition, said body having an apical end remote from said shank, a plurality of flutes disposed about said body,
• an interface selectively connectable to said shank with a lateral coupling motion, said interface having a partially tubular shape defining an interior region, said interface extending axially between top and bottom ends thereof, a lateral pocket extending continuously through interface from said top end to said bottom end and intersecting said interior region to enable the lateral coupling motion connection of said interface to said shank, a spur disposed on said interior region and configured to engage with said groove in said shank, said spur having a C-shape, said spur seated in-between said inset corners of said groove, said interface including a cap flange adjacent said top end, a skirt extending axially from said cap flange toward said bottom end, said skirt having a skirt exterior, said skirt having a relief disposed directly adjacent said cap flange, said relief being axially aligned with said spur, said skirt tapering from a widest diameter adjacent said relief, said bottom end of said interface spaced apart from said domed transition with said interface connected to said shank, and
• a tubular key having an upper end and a lower end, a stop ring formed at said lower end, said key having an inner diameter and an outer diameter, said inner diameter being sized for interference fit surrounding said widest diameter of said tapered skirt and clearance fit surrounding said relief of said skirt, said upper end of said key configured to seat against said cap flange, at least one axially elongated irrigation window disposed in said key, said axially elongated irrigation window exposing said domed transition therethrough.