# US 10,945,851 B2 · Elbow prosthesis > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,945,851 B2 - Document ID: US10945851B2 - Status: Granted - Kind: B2 - Application number: 16/184,845 - Filed: 2018-11-08 - Published: 2019-04-11 - Granted: 2021-03-16 - Earliest claimed: 2009-09-18 - Assignees: Encore Medical, L.P. - Applicants: Encore Medical, LP - Inventors: Nicholas J. Katrana; Thomas J. Graham; Brian K. Berelsman; Clinton E. Kehres - Web page: https://patentgrep.com/patent/US10945851B2 ## CPC - A61F 2/3804: {for elbows} - A61B 17/686: {Plugs, i.e. elements forming interface between bone hole and implant or fastener, e.g. screw} - A61F 2/30767: {Special external or bone-contacting surface, e.g. coating for improving bone ingrowth} - A61F 2002/30507: {using a threaded locking member, e.g. a locking screw or a set screw} - A61F 2002/30594: {slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots} - A61F 2002/30616: {Sets comprising a plurality of prosthetic parts of different sizes or orientations} - A61F 2002/3809: {for radio-humeral joints} - A61F 2002/3813: {for ulno-humeral joints} - A61F 2002/3822: {Humeral components} - A61F 2220/0025: Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements - 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 An elbow prosthesis includes a capitellar implant having an articulating head and a stem. The articulating head includes a first passage along a first axis, a second passage along a second axis, and a receiving groove. The stem includes a proximal end and a connecting end. The connecting end includes a curved body having a bore. The curved body selectively mates with the receiving groove such that the bore axially aligns with the first axis of the first passage in an assembled position for collectively receiving a securing member. The second axis is located between the first axis and the proximal end of the stem. ## Claims ### Claim 1 An implant device for a joint prosthesis, the device comprising: a stem comprising a proximal portion configured to be implanted into a bone of a patient, a connecting portion comprising a curved body, and a bore extending along a first axis through a distal portion of the curved body of the connecting portion; and an articulating head configured to removably couple to the stem, the articulating head comprising a body extending between a lateral side and a medial side and including an articulating surface, a first passage extending through the body along a second axis, a receiving groove formed into the body and configured to receive the curved body of the connecting portion of the stem to removably couple the articulating head to the stem, and a second passage extending through the body along a third axis, the second passage intersecting the receiving groove, wherein, in an assembled state in which the articulated head is coupled to the stem, the first axis is aligned with the third axis, and the second axis is located between the third axis and the proximal portion of the stem, and wherein the first, second, and third axes are substantially parallel. ### Claim 2 (depends on 1) The device of claim 1, further comprising a first securing member that, in the assembled state, extends within the second passage and the bore to secure the articulating head to the stem. ### Claim 3 (depends on 2) The device of claim 2, further comprising a second securing member that, in the assembled state, extends through the first passage to secure the articulating head to the bone of the patient. ### Claim 4 (depends on 3) The device of claim 3, wherein the second securing member comprises a bone screw and comprises a distal end that, in the assembled state, extends proud from the articulating head and is configured to threadably engage the bone in an implanted position. ### Claim 5 (depends on 3) The device of claim 3, wherein the first passage extends through an attachment lobe formed on the lateral side of the body of the articulating head. ### Claim 6 (depends on 1) The device of claim 1, wherein the articulating surface of the body of the articulating head comprises a substantially hemispherical surface. ### Claim 7 (depends on 6) The device of claim 6, wherein the body of the articulating head further comprises a bone engaging surface opposite the articulating surface. ### Claim 8 (depends on 7) The device of claim 7, wherein the bone engaging surface is convex. ### Claim 9 An implant device for a joint prosthesis, the device comprising: a stem comprising a proximal portion configured to be implanted into a bone of a patient, a connecting portion comprising a curved body, and a bore extending along a first axis through a distal portion of the curved body of the connecting portion; and an articulating head configured to removably couple to the stem, the articulating head comprising a body extending between a lateral side and a medial side and including an articulating surface, a first passage extending through the body along a second axis, a receiving groove formed into the body and configured to receive the curved body of the connecting portion of the stem to removably couple the articulating head to the stem, and a second passage extending through the body along a third axis, the second passage intersecting the receiving groove, wherein, in an assembled state in which the articulated head is coupled to the stem, the first axis is aligned with the third axis, and the second axis is located between the third axis and the proximal portion of the stem; a first securing member that, in the assembled state, extends within the second passage and the bore to secure the articulating head to the stem; and a second securing member that, in the assembled state, extends through the first passage to secure the articulating head to the bone of the patient. ### Claim 10 (depends on 9) The device of claim 9, wherein the proximal portion of the stem is porous coated. ### Claim 11 (depends on 9) The device of claim 9, wherein the proximal portion of the stem comprises a straight cylinder. ### Claim 12 (depends on 9) The device of claim 9, wherein the proximal portion of the stem comprises a tapered cylinder. ### Claim 13 (depends on 9) The device of claim 9, wherein the proximal portion of the stem is substantially planar. ### Claim 14 An implant device for a joint prosthesis, the device comprising: a stem comprising a proximal portion configured to be implanted into a bone of a patient, a connecting portion comprising a curved body, and a bore extending along a first axis through a distal portion of the curved body of the connecting portion; and an articulating head configured to removably couple to the stem, the articulating head comprising a body extending between a lateral side and a medial side, and comprising: an articulating surface comprising a substantially hemispherical surface, a bone engaging surface opposite the articulating surface, wherein the bone engaging surface is convex, a first passage extending through the body along a second axis, a receiving groove formed into the body and configured to receive the curved body of the connecting portion of the stem to removably couple the articulating head to the stem, and a second passage extending through the body along a third axis, the second passage intersecting the receiving groove, wherein, in an assembled state in which the articulated head is coupled to the stem, the first axis is aligned with the third axis, and the second axis is located between the third axis and the proximal portion of the stem. ### Claim 15 (depends on 14) The device of claim 14, wherein the proximal portion of the stem defines an opening therethrough, the opening adapted to accept boney ingrowth when implanted into the bone of the patient. ### Claim 16 (depends on 14) The device of claim 14, further comprising an auxiliary passage formed in the articulating head, the auxiliary passage configured to receive a supplemental fastener extending at a non-parallel orientation relative to the second axis. ### Claim 17 (depends on 14) The device of claim 14, wherein the second axis extends substantially perpendicular relative to a long axis of the proximal portion of the stem. ### Claim 18 (depends on 14) The device of claim 14, wherein the curved body of the connecting portion of the stem is substantially J-shaped. ### Claim 19 (depends on 14) The device of claim 14, wherein the joint prosthesis comprises an elbow prosthesis. ### Claim 20 (depends on 19) The device of claim 19, wherein the implant device comprises a capitellar implant device.