Assembler for modular prosthesis
OwnerKambiz Behzadiinventor
Life of this patent
Estimating the term…
Abstract
A system and method for improving installation of a prosthesis. Devices include prosthesis installation tools, prosthesis assembly tools, site preparation systems, and improved power tools used in implant site preparation.
Claims32
A system for assembly of a modular prosthesis including a stem portion, a trunnion portion coupled to the stem portion, the trunnion portion having an insertion profile defining a trunnion axis, and a prosthesis head configured for an installation on the trunnion portion and the prosthesis head defining a distal head portion, a proximal head portion opposite of the distal head portion, the prosthesis head further defining a bore with the proximal head portion including a bore opening into the bore, the bore complementary to the insertion profile with the bore defining a bore axis, comprising:
- a head alignment structure including a housing defining a cavity complementary to an outer portion of the prosthesis head with said housing having a head alignment axis extending through said cavity wherein said housing is configured to anti-rotatingly enclose, during the installation, the prosthesis head within said cavity and configured to align said head alignment axis with the bore axis producing and maintaining a head alignment of said head alignment axis with the bore axis:
- wherein said housing engages both the distal head portion and the proximal head portion.
A system for assembly of a modular prosthesis including a stem portion, a trunnion portion coupled to the stem portion, the trunnion portion having an insertion profile defining a trunnion axis, and a prosthesis head configured to be installed on the trunnion portion and defining a bore complementary to said insertion profile with the bore defining a bore axis, comprising:
- a head alignment structure including a housing defining a cavity complementary to an outer portion of the prosthesis head with said housing having a head alignment axis extending through said cavity wherein said housing is configured to secure the prosthesis head within said cavity and align said head alignment axis with the bore axis producing a head alignment of said head alignment axis and said bore axis, further comprising:
- a tool, configured to engage said head alignment structure, said tool further configured to generate an assembly force along an assembly force axis, said assembly force axis aligned with said head alignment axis when said head alignment axis is aligned with said trunnion axis:
- wherein said generation of said assembly force is configured to mechanically join the prosthesis head and the trunnion portion with a pressfit fixation and wherein said assembly force includes an application of ultrasonic energy during engagement of the prosthesis head and the trunnion portion with said pressfit fixation.
Dependencies are inferred from the claim text.