Prosthesis installation systems and methods
AssigneeKambiz Behzadi
InventorsKambiz Behzadi, John Depiano, Matthew Ebbs, David Jacobs, Paul Kardel, Danny Kent Winkler
Life of this patent
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Abstract
A system and method for allowing any surgeon, including those surgeons who perform a fewer number of a replacement procedure as compared to a more experienced surgeon who performs a greater number of procedures, to provide an improved likelihood of a favorable outcome approaching, if not exceeding, a likelihood of a favorable outcome as performed by a very experienced surgeon with the replacement procedure.
Claims8
A vibratory device for installation of a prosthesis into a cavity prepared in a portion of a bone, comprising:
- an engine producing a motion;
- a shaft coupled to the prosthesis;
- a converter, coupled to said engine and to said shaft, producing a series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion;
- wherein said converter includes a cam having a cam surface responsive to said rotary motion and wherein said shaft is coupled to said cam surface;
- and
- wherein said converter includes a rocker arm coupled between said cam surface and said shaft with a first end of said rocker arm coupled to said cam surface and a second end of said rocker arm coupled to said shaft and wherein a biasing structure is coupled to said second end.
A vibratory device for installation of a prosthesis into a cavity prepared in a portion of a bone, comprising:
- an engine producing a motion;
- a shaft coupled to the prosthesis;
- a converter, coupled to said engine and to said shaft, producing a series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion;
- wherein said engine includes a rotary motor and wherein said motion includes a rotary motion;
- wherein said converter includes a cam having a cam surface responsive to said rotary motion and wherein said shaft is coupled to said cam surface;
- and
- wherein said converter includes a rocker arm coupled between said cam surface and said shaft with a first end of said rocker arm coupled to said cam surface and a second end of said rocker arm coupled to said shaft and wherein a biasing structure is coupled to said second end.
A vibratory device for installation of a prosthesis into a cavity prepared in a portion of a bone, comprising:
- an engine producing a motion;
- a shaft coupled to the prosthesis;
- a converter, coupled to said engine and to said shaft, producing a series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion;
- wherein said engine includes a pneumatic motor and wherein said motion includes a flow of a fluid;
- wherein said converter includes a cam having a cam surface responsive to said flow and wherein said shaft is coupled to said cam surface;
- wherein said converter includes a rocker arm coupled between said cam surface and said shaft with a first end of said rocker arm coupled to said cam surface and a second end of said rocker arm coupled to said shaft and wherein a biasing structure is coupled to said second end.
A vibratory device for installation of a prosthesis into a cavity prepared in a portion of a bone, comprising:
- an engine producing a motion;
- a shaft coupled to the prosthesis;
- a converter, coupled to said engine and to said shaft, producing a series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion;
- wherein said engine includes a rotary motor and wherein said motion includes a rotary motion;
- wherein said converter includes a cam having a cam surface responsive to said rotary motion and wherein said shaft is coupled to said cam surface;
- wherein said rotary motor includes a direct current (DC) motor, wherein said cam surface defines a two lobed surface directly connected to said DC motor by a gear train;
- wherein said gear train is configured to produce said series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion at about 50 Hz;
- wherein said shaft includes a distal end coupled to the prosthesis and a proximal end proximate said cam surface and wherein said proximal end is coupled to an inline spring to bias said proximal end away from said cam surface, and
- wherein a compression of said inline spring is configured to contact said proximal end to said cam surface.
A vibratory device for installation of a prosthesis into a cavity prepared in a portion of a bone, comprising:
- an engine producing a motion;
- a shaft coupled to the prosthesis;
- a converter, coupled to said engine and to said shaft, producing a series of longitudinal vibrations in said shaft and the prosthesis responsive to said motion;
- wherein said engine includes a rotary motor and wherein said motion includes a rotary motion;
- and
- wherein said converter includes a cam having a cam surface responsive to said rotary motion with said cam surface coupled to a shaft spring by a rocker assembly, further comprising a gear train coupled to said cam, and wherein said shaft spring is coupled to said shaft.
Dependencies are inferred from the claim text.