Mechanical assembly including exterior surface preparation
OwnerKambiz Behzadiinventor
Life of this patent
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Abstract
A system and method for further improving upon an ability of a surgeon to reduce or eliminate impaction forces when installing or assembling a prosthesis. An implant includes a surface treatment for aiding operations with the implant. For example, some surface treatments provide an asymmetry in installation versus removal to bias the associated implant deeper into an installation site.
Claims17
A method for installing a prosthesis into a prepared cavity in a portion of bone, the prepared cavity providing a first resistive force for a cementless installation of non-surface treated prosthesis into the prepared cavity, comprising:
- a) preparing a surface treatment for the non-surface treated prosthesis in advance of the cementless installation defining a surface-treated prosthesis, said surface-treated prosthesis configured to define a second resistive force, less than the first resistive force, between said surface-treated prosthesis and the prepared cavity for a cementless installation of said surface-treated prosthesis;
- and
- b) installing said surface-treated prosthesis into the prepared cavity using an installation force less than the first resistive force responsive to said surface treatment.
A method for installing a prosthesis into prepared cavity in a portion of bone, the prepared cavity providing a resistive force for an installation of an non-surface treated prosthesis into the prepared cavity, comprising:
- a) applying a transitory surface treatment to the non-surface treated prosthesis prior to an installation of the non-surface treated prosthesis into the portion of bone producing a surface-treated implant during a treated installation, wherein the prosthesis includes a coefficient of friction with respect to a first region of the prosthesis physically contacting a second region of the portion of bone and wherein said transitory surface treatment is configured to provide a first reduction in said coefficient of friction during said treated installation;
- and
- b) installing, while said transitory surface treatment is applied to the prosthesis, said surface-treated implant into the prepared cavity using an installation force less than the resistive force responsive to said transitory surface treatment.
The method of claim 16 wherein said transitory surface treatment is further configured to be absorbed after said installation by a body including the portion of bone producing a modified post-installation surface treatment.
The method of claim 17 wherein said wherein said modified post-installation surface treatment is configured to reduce said first reduction in said coefficient of friction.
The method of claim 16 wherein said installing step b) further comprises:
- b1) communicating a vibratory installation force to said surface-treated implant, said vibratory installation force having a vibration profile configured to provide a second reduction in said coefficient of friction during said installation using said vibratory installation force.
The method of claim 19 wherein said vibratory profile includes one or more of a first set of rotational vibrations perpendicular to an installation path of the prosthesis into the portion of bone, a second set of longitudinal vibrations parallel to said installation path, and combinations thereof.
Dependencies are inferred from the claim text.