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US 2024/0307187 A1Published application
Humeral implant anchor system
AssigneeHowmedica Osteonics Corp.
InventorsBrian C. HODOREK, Kevin P. KNOX, Thomas Bradley EDWARDS
Life of this patent
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Abstract
A stemless humeral shoulder assembly having a base member and an anchor advanceable into the base member. The base member can include a distal end that can be embedded in bone and a proximal end that can be disposed at a bone surface. The base member can also have a plurality of spaced apart arms projecting from the proximal end to the distal end. The anchor can project circumferentially into the arms and into a space between the arms. When the anchor is advanced into the base member, the anchor can be exposed between the arms. A recess can project distally from a proximal end of the anchor to within the base member. The recess can receive a mounting member of an anatomical or reverse joint interface.
Claims20
An implant, comprising:
- a stemless base having a length extending from a first end to a second end, the stemless base including:
- a central portion defining a hole for securing another component of the implant to the stemless base,
- a plurality of spaced apart arms extending radially outwardly from the second end of the stemless base and toward the first end of the stemless base;
- and
- a peripheral member encircling the first end of the stemless base and extending outwardly of the plurality of spaced apart arms such that a diameter of the peripheral member corresponds to a width of the first end of the stemless base, the peripheral member disposed in a concentric relationship with the hole defined by the central portion of the stemless base, the peripheral member having a distal portion configured to engage bone,
- wherein the width of the first end of the stemless base is greater than a width of the second end of the base.
3 more elements
An implant, comprising:
- an artificial joint surface;
- and
- a stemless base configured to be implanted within a humerus, the stemless base extending lengthwise from a first end to a second end and including:
- a central portion defining a hole for securing the artificial joint surface to the stemless base,
- a plurality of spaced apart arms coupled together at the second end of the stemless base and extending toward the first end of the stemless base, each arm of the plurality of spaced apart arm including a first lateral surface, a second lateral surface, and an outer edge defining an arcuate sloping surface, and
- a peripheral member encircling the first end of the stemless base such that the peripheral member extends outwardly from the outer edges of the plurality of spaced apart arms and has a diameter that corresponds to a width of the first end of the stemless base, the peripheral member disposed in a concentric relationship with the hole defined by the central portion of the stemless base, the peripheral member having a proximal portion including a planar surface extending radially outwardly from the hole defined by the central portion,
- wherein the width of the first end of the stemless base is greater than a width of the second end of the base, and
- wherein at least a portion of each arm of the plurality of arms includes a porous material.
5 more elements
A method, comprising:
- preparing a humerus for receiving a humeral implant;
- and
- implanting the humeral implant into the humerus, the humeral implant including:
- a stemless base configured to be implanted within a humerus and coupled to the artificial joint surface, the stemless base extending lengthwise from a first end to a second end and including:
- a central portion defining a hole for securing an artificial joint surface to the stemless base,
- a plurality of spaced apart arms coupled together at the second end of the stemless base and extending toward the first end of the stemless base, each arm of the plurality of spaced apart arm including a first lateral surface, a second lateral surface, and an outer edge having an arcuate sloping surface;
- and
- a peripheral member encircling the first end of the stemless base and extending outwardly from the outer edges of the plurality of spaced apart arms such that a diameter of the peripheral member corresponds to a width of the first end of the stemless base, the peripheral member disposed in a concentric relationship with the hole defined by the central portion, the peripheral member having a proximal portion including a planar surface extending radially outwardly from the hole defined by the central portion,
- wherein the width of the first end of the stemless base is greater than a width of the second end of the base, and
- wherein at least a portion of each arm of the plurality of arms includes a porous material.
7 more elements
Dependencies are inferred from the claim text.