# US 12,370,051 B2 · Shoulder prosthesis components and assemblies > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,370,051 B2 - Document ID: US12370051B2 - Status: Granted - Kind: B2 - Application number: 17/634,623 - Filed: 2020-09-30 - Published: 2022-11-10 - Granted: 2025-07-29 - Earliest claimed: 2019-10-01 - Assignees: Howmedica Osteonics Corp. - Applicants: Howmedica Osteonics Corp. - Inventors: Kevin P. Knox; David R. Stump; Alexander Paul Wolfe; Anne Marie Schlamb; Markus Scheibel; Pascal Boileau; George S. Athwal; Gilles Walch; Jon J P Warner; Philippe Collin; Jay D. Keener; Robert Z. Tashjian; R. Sean Churchill; Austin Wyatt Mutchler - Web page: https://patentgrep.com/patent/US12370051B2 ## CPC - A61F 2/4003: {Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft (replacing only the epiphyseal or metaphyseal parts of the femur A61F2/3601)} - A61B 17/15: Guides therefor - A61B 17/1684: {for the shoulder} - A61B 17/921: {for intramedullary devices} - A61F 2/30749: {Fixation appliances for connecting prostheses to the body} - A61F 2/4014: {Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts} - A61F 2/4059: {Humeral shafts} - A61F 2/4612: {of shoulders} - A61F 2002/30431: {made by first pushing a necked button longitudinally and then sliding it laterally within a keyhole slot} - A61F 2002/305: {Snap connection} - A61F 2002/30616: {Sets comprising a plurality of prosthetic parts of different sizes or orientations} - A61F 2002/30884: {Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity} - A61F 2002/3092: {having an open-celled or open-pored structure} - A61F 2002/4018: {Heads or epiphyseal parts of humerus} - A61F 2002/4022: {having a concave shape, e.g. hemispherical cups} - A61F 2002/4037: {Connections of heads to necks} - A61F 2002/4044: {Connections of necks to shafts} - A61F 2002/4051: {Connections of heads directly to shafts} - A61F 2002/4062: {Proximal or metaphyseal parts of shafts} - A61F 2002/4077: {Distal or diaphyseal parts of shafts} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract Various embodiments disclosed herein relate to stemmed and stemless humeral anchors for use in shoulder arthroplasty procedures. For example, the humeral anchor can include a first end, a second end, and an interior surface extending between the first end and the second end. The interior surface can be disposed about a recess disposed between the first end and the second end. The recess can be configured to secure a coupling of a shoulder articular body directly to the interior surface. ## Claims ### Claim 1 A monolithic humeral anchor, comprising: a distal portion including a stem extending proximally from a distal end of the monolithic humeral anchor, the distal portion configured to fit within an intramedullary canal formed in a humerus when implanted; a proximal portion extending distally from a proximal end of the monolithic humeral anchor, the proximal end including a cancellous bone interface including: a flange extending outwardly from the proximal end of the proximal portion and including a circular outer periphery and a distal facing bone compression surface having a width that varies around the outer periphery, and a porous zone disposed adjacent to the flange and configured for bone in-growth; a recess extending distally from the proximal end and into the proximal portion of the monolithic humeral anchor; and an inner periphery defining the recess and located adjacent to the proximal end of the monolithic humeral anchor, the inner periphery comprising: a concave locking feature disposed in the inner periphery; and a convex locking feature disposed in the inner periphery, the concave locking feature spaced apart from the convex locking feature. ### Claim 2 (depends on 1) The monolithic humeral anchor of claim 1, wherein the concave locking feature comprises a first concave locking feature and a second concave locking feature disposed opposite the first concave locking feature. ### Claim 3 (depends on 2) The monolithic humeral anchor of claim 2, wherein the first concave locking feature and the second concave locking features are disposed at medial and lateral portions of the humeral anchor respectively. ### Claim 4 (depends on 2) The monolithic humeral anchor of claim 2, wherein the convex locking feature comprises a first convex locking feature and a second convex locking feature disposed opposite the first convex locking feature. ### Claim 5 (depends on 4) The monolithic humeral anchor of claim 4, wherein the first convex locking feature and the second convex locking features are disposed at anterior and posterior portions of the humeral anchor respectively. ### Claim 6 (depends on 1) The monolithic humeral anchor of claim 1, wherein the concave locking feature is configured to provide an interference fit for an articular body comprising a concave articular surface. ### Claim 7 (depends on 1) The monolithic humeral anchor of claim 1, wherein the convex locking feature comprises an elongate fin projecting toward the recess. ### Claim 8 (depends on 1) The monolithic humeral anchor of claim 1, wherein a width of the bone compression surface tapers around the proximal portion. ### Claim 9 (depends on 1) The monolithic humeral anchor of claim 1, wherein the flange is shaped to specifically match a patient's anatomy based on imaging performed before surgery. ### Claim 10 A stemless humeral anchor, comprising: a distal portion extending proximally from a distal end of the stemless humeral anchor, the distal portion configured to occupy a portion of a metaphysis of a humerus when implanted; a proximal portion extending distally from a proximal end of the stemless humeral anchor; a recess extending distally from the proximal end of the stemless humeral anchor and into the proximal portion; and an inner periphery disposed about the recess adjacent to the proximal end of the stemless humeral anchor, the inner periphery comprising: a concave locking feature disposed in the inner periphery; and a convex locking feature disposed in the inner periphery, the concave locking feature spaced apart from the convex locking feature. ### Claim 11 (depends on 10) The stemless humeral anchor of claim 10, wherein the distal portion comprises a first section and a second section distal the first section, the second section comprising a fin extending distally from the first section. ### Claim 12 (depends on 11) The stemless humeral anchor of claim 11, wherein the second section comprises a plurality of fins extending distally from the first section. ### Claim 13 (depends on 11) The stemless humeral anchor of claim 11, wherein the first section comprises a second recess distal the recess. ### Claim 14 A humeral anchor, comprising: a distal portion extending proximally from a distal end of the humeral anchor, the distal portion configured to occupy a portion of a metaphysis of a humerus when implanted; a proximal portion extending distally from a proximal end of the humeral anchor and having an outer surface that is enlarged to occupy at least a majority of the volume of a metaphysis of a humerus into which the humeral anchor is to be disposed, the proximal portion having a lateral side configured to be disposed adjacent to a cortical wall of a lateral portion of a humeral metaphysis and a medial side configured to be spaced apart from a cortical wall of a medial side of the humeral metaphysis; and a bone compression surface disposed at the proximal end of the humeral anchor, the bone compression surface being disposed about the medial side of the proximal portion and being configured to extend from the medial side of the proximal portion to the cortical wall of the medial side of the humeral metaphysis when implanted in a humerus, wherein the bone compression surface comprises a flange that extends outward from the proximal end of the proximal portion of the humeral anchor. ### Claim 15 (depends on 14) The humeral anchor of claim 14, wherein the flange comprises a circular outer periphery having a radius corresponding to a radius of the lateral side of the proximal portion. ### Claim 16 (depends on 14) The humeral anchor of claim 14, further comprising an annular surface disposed at a proximal face of the humeral anchor, the flange comprising a portion of the annular surface of a proximal face. ### Claim 17 (depends on 14) The humeral anchor of claim 14, further comprising rotational orientation indicia formed on or in the annular surface disposed at the proximal face of the humeral anchor. ### Claim 18 (depends on 14) The humeral anchor of claim 14, further comprising a recess extending distally from the proximal end of the humeral anchor and into the proximal portion and an inner periphery disposed about the recess adjacent to the proximal end of the humeral anchor, the inner periphery comprising a locking feature disposed in the inner periphery, the locking features being aligned with the bone compression surface. ### Claim 19 (depends on 14) The humeral anchor of claim 14, wherein the humeral anchor comprises a stemless humeral anchor. ### Claim 20 (depends on 14) The humeral anchor of claim 14, wherein the distal end of the humeral anchor includes a stem.