Universal Humeral Stem System
OwnerRaphael S.F. Longobardi, Roy C. Wileyinventors
Life of this patent
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Abstract
A universal humeral stem (100) includes an anchoring functionality for use in a universal shoulder prosthesis system that allows for modular humeral components to be exchanged while leaving the humeral stem in place during a transition from traditional anatomic total shoulder replacement to a reverse total shoulder replacement. The humeral stem (100) includes a proximal body (120) with a mounting base (122), a cloverleaf neck (130), and a shaft (140) and an optional distal stem (150) attached to the proximal body (120). In a further embodiment, the proximal body (120A) and the distal stem (150A) are separate components allowing for matching different distal stems based on length and diameter for a particular patient anatomy.
Claims27
A humeral stem comprising:
- a proximal body having
- a mounting base with a substantially planar mounting surface, the mounting base configured to attach to a modular humeral component,
- a neck extending from said mounting base, said neck having three cloverleafs evenly spaced on three sides or four cloverleafs evenly spaced around said neck such that a cross-section resembles a circle with arcuate areas around the circle's perimeter, at least three of the cloverleafs include one or more passageways passing laterally through them, and
- a shaft extending from said neck, wherein said neck curving along its length from the mounting base to said shaft.
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A humeral stem comprising:
- a proximal body having
- a mounting base with a substantially planar mounting surface with notches extending down from a posterior and anterior sides of said mounting base and a Morse taper receiving cavity configured to receive a post of a modular humeral component, the mounting base having no structure above the mounting surface,
- a neck extending from said mounting base, said neck having four cloverleafs evenly spaced around said neck, at least three of the cloverleafs include three equally sized and evenly spaced passageways passing laterally through them, the passageways are configured to receive a suture to secure soft tissue or tuberosities to the proximal body, and
- a shaft extending from said neck, wherein said neck curving along its length from said mounting surface to said shaft;
- and
- a distal stem or a distal cap extending from a distal end of said shaft of said proximal body.
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A humeral stem comprising:
- a mounting base having
- a substantially planar mounting surface with notches extending down from a posterior and anterior sides of said mounting base, the mounting base having no structure above the mounting surface, and
- a Morse taper receiving cavity in an axial center of said planar surface, the receiving cavity is configured to receive a post of a modular humeral component;
- a neck extending from said mounting base, said neck having four cloverleafs evenly spaced around said neck, at least one of the cloverleafs include three equally sized and evenly spaced passageways passing laterally through them, the passageways are configured to receive a suture to secure soft tissue or tuberosities to the proximal body;
- and
- a shaft extending from said neck, wherein said neck curving along its length from the mounting surface to said shaft.
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Dependencies are inferred from the claim text.