Instrument for modular orthopaedic prosthesis
AssigneeDePuy Synthes Products, Inc.
InventorsConrad L. Klotz, Chad L. Baughman, Daniel J. Williman
Life of this patent
Estimating the term…
Abstract
A kit for use in performing a trail reduction in joint arthroplasty is provided. The kit includes a trail stem assembly including a first component, a second component selectably moveable with respect to the first component, and a fastener for securing the first component to the second component. The kit also includes an articulating trial component removeably fixedly secured to the trail stem assembly and a driver for cooperation with the fastener to secure the first component to the second component. The kit also includes a handle. The handle has a first feature for permitting the driver to pass through the handle and a second feature for orientably connecting the handle to the articulating trial component.
Claims20
A kit for use in performing a trial reduction in joint arthroplasty, said kit comprising:
- a trial stem assembly including a first component, a second component selectably moveable with respect to the first component, and a fastener configured to engage the second component to secure the first component to the second component;
- an articulating trial component configured to be secured to said second component;
- a driver having a longitudinal portion with a fastener engaging portion at an end thereof, said fastener engaging portion configured to cooperate with the fastener to secure the first component to the second component;
- and
- a handle having (i) a longitudinal passageway configured to permit said fastener engaging portion of the driver to be freely passed through and removed from said longitudinal passageway, and (ii) a mating feature configured to mate with a complementary structure defined in said articulating trial component.
A tool assembly for use in performing a trial reduction in joint arthroplasty using a trial stem assembly having a first component and second component connected by a fastener and having an articulation trial component, said tool assembly comprising:
- a driver having a longitudinal portion with a fastener engaging portion at a distal end thereof, said fastener engaging portion for cooperation with the fastener to secure the first component to the second component;
- and
- a handle having (i) a longitudinal passageway defining an axis and configured to permit said fastener engaging portion of the driver to be freely passed through and removed from said longitudinal passageway of said handle, and (ii) a mating feature including a first member extending from an end portion of said handle along the axis of said passageway and a second member extending from the end portion of said handle and spaced apart from, and radially outwardly with respect to the axis from, the first member, each of the first member and the second member configured to mate with complementary structures defined in said articulating trial component, wherein said longitudinal passageway extends through and is surrounded by said first member, and the first member and the second member have a cylindrical shape.
A tool assembly for use in performing a trial reduction in joint arthroplasty using a trial stem assembly having a first component and second component connected by a fastener and having an articulation trial component, said tool assembly comprising:
- a driver having a longitudinal portion with a fastener engaging portion at a distal end thereof, said fastener engaging portion for cooperation with the fastener to secure the first component to the second component;
- and
- a handle having (i) a longitudinal passageway defining an axis and configured to permit said fastener engaging portion of the driver to be freely passed through and removed from said longitudinal passageway of said handle, and (ii) a mating feature including a first member extending from an end portion of said handle along the axis of said passageway and a second member extending from the end portion of said handle and spaced apart from the first member, each of the first member and the second member configured to mate with complementary structures defined in said articulating trial component, wherein a first minimum distance from the axis to the second member is greater than a second minimum distance from the axis to the first member.
Dependencies are inferred from the claim text.