Oscillating surgical bone removal tool with fluted cutting head
AssigneeMedtronic PS Medical, Inc.
InventorsMilton F. Barnes, Haoran Li, Steven Hartmann
Life of this patent
Estimating the term…
Abstract
A surgical device for cutting or shaving bone or tissue includes a housing having an elongated tube extending therefrom, the elongated tube configured to support a surgical tool at a distal end thereof. A gear assembly is disposed within the housing and is configured to control oscillation of the surgical tool. A motor is operably coupled to the housing and is configured to drive the gear assembly upon activation thereof. The motor is moveable relative to the housing to adjust one or more gears of the gear assembly which, in turn, adjusts an oscillation angle of the surgical tool to control the aggressiveness of the surgical tool when cutting tissue or bone.
Claims16
A surgical device for cutting or shaving bone or tissue, comprising:
- a housing including an elongated tube extending therefrom, the elongated tube configured to support a surgical tool at a distal end thereof, the surgical tool including:
- an elongated drive rod operably coupled to a gear assembly disposed within the housing;
- a tool head including:
- a first pair of cutting flutes disposed on opposing sides thereof and converging to form a cutting tip at a distal end of the tool head, each flute of the first pair of flutes including cutting edges on respective sides thereof, the cutting edges extending distally to form the cutting tip;
- a second pair of cutting flutes disposed on opposing sides thereof, each flute of the second pair of flutes disposed between the first pair of cutting flutes and each flute of the second pair of flutes including cutting edges on respective sides thereof;
- and
- a motor operably coupled to the housing and configured to drive the gear assembly upon activation thereof to control oscillation of the elongated drive rod and the tool head,
- wherein the motor is moveable relative to the housing to adjust at least one gear of the gear assembly which, in turn, adjusts an oscillation angle of the surgical tool.
A surgical device for cutting or shaving bone or tissue, comprising:
- a housing including an elongated tube extending therefrom, the elongated tube configured to support a surgical tool at a distal end thereof, the surgical tool including:
- an elongated drive rod operably coupled to a gear assembly disposed within the housing;
- a tool head including:
- a first pair of cutting flutes disposed on opposing sides thereof and converging to form a cutting tip at a distal end of the tool head, each flute of the first pair of flutes including cutting edges on respective sides thereof that extend distally to form the cutting tip;
- a second pair of cutting flutes disposed on opposing sides thereof, each flute of the second pair of flutes disposed between the first pair of cutting flutes and each flute of the second pair of flutes including cutting edges on respective sides thereof;
- a motor operably coupled to the housing and configured to drive the gear assembly upon activation thereof to control oscillation of the elongated drive rod and the tool head, the motor moveable relative to the housing to adjust at least one gear of the gear assembly which, in turn, adjusts an oscillation angle of the elongated drive rod and the tool head;
- and
- a collet disposed within the housing and configured to selectively lock the elongated drive rod of the surgical tool within the housing.
A surgical device for cutting or shaving bone or tissue, comprising:
- a housing;
- a gear assembly disposed within the housing;
- a surgical tool including:
- an elongated drive rod configured for selective engagement within the housing and operably coupled to the gear assembly;
- a tool head including:
- a first pair of cutting flutes disposed on opposing sides thereof and converging to form a cutting tip at a distal end of the tool head, each flute of the first pair of flutes including cutting edges on respective sides thereof that extend distally to form the cutting tip;
- a second pair of cutting flutes disposed on opposing sides thereof, each flute of the second pair of flutes disposed between the first pair of cutting flutes and each flute of the second pair of cutting flutes including cutting edges on respective sides thereof;
- and
- a motor moveable relative to the housing to adjust at least one gear of the gear assembly which, in turn, adjusts an oscillation angle of the surgical tool.
Dependencies are inferred from the claim text.