# US 6,589,282 B2 · Modular shoulder prostheses > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,589,282 B2 - Document ID: US6589282B2 - Status: Granted - Kind: B2 - Application number: 09/752,701 - Filed: 2000-12-29 - Published: 2001-11-15 - Granted: 2003-07-08 - Earliest claimed: 1999-12-31 - Assignees: Implex Corporation - Inventors: Michael L. Pearl - Web page: https://patentgrep.com/patent/US6589282B2 ## CPC - A61F 2/40: for shoulders - A61F 2002/30143: {hexagonal} - A61F 2002/30507: {using a threaded locking member, e.g. a locking screw or a set screw} - A61F 2002/4051: {Connections of heads directly to shafts} - A61F 2002/4074: {Connections of proximal or metaphyseal parts to distal or diaphyseal parts} - A61F 2220/0025: Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements - A61F 2230/0017: Angular shapes - 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) ## Abstract A humeral prosthetic device having a body, a stem for anchoring the device in a humeral canal of a humerus, and a head for replacing a natural humeral head of the humerus. The head is disposed at a selected angle relative to the stem and at least one of the body and stem may control the selected angle of the head relative to the stem. Further, the stem may include an extension for coupling the stem to the body. The extension may be disposed on an axis parallel to and offset from a center line of the stem for providing a lateral offset of the body relative to the stem upon reversal of the stem in the humeral canal. The humeral prosthetic device may further include an insert which coacts with the body and the head of the device to provide superior, inferior, anterior, and posterior positioning of the head relative to the body. ## Claims ### Claim 1 A humeral prosthetic device comprising: a body; a stem for anchoring the device in a humeral canal of a humerus, the stem coupled to a first area of the body; and a head for replacing a natural humeral head of the humerus, the head coupled to a second area of the body and disposed at a selected angle relative to the stem; at least one of the body and stem controlling the selected angle of the head relative to the stem; the body being disposed at a selected offset relative to the stem, at least one of the body and stem controlling the selected offset of the body relative to the stem, and the first area of the body defining a base wall disposed at one of a plurality of predetermined angles relative to a rear wall of the body, the predetermined angle of the base wall relative to the rear wall controlling the selected angle of the head relative to the stem and the selected offset of the body relative to the stem; wherein the body comprises a series of the bodies, each of the bodies having a different predetermined base wall to rear wall angle, the bodies being selectable for providing a desired selected angle of the head relative to the stem and a desired selected offset of the body relative to the stem. ### Claim 2 A humeral prosthetic device comprising: a body having a base wall; a stem for anchoring the device in a humeral canal of a humerus, the stem having an end wall coupled to the base wall of the body; and a head for replacing a natural humeral head of the humerus, the head coupled to another wall of the body and disposed at a selected angle relative to the stem; at least one of the body and stem controlling the selected angle of the head relative to the stem; wherein the body is disposed at a selected offset relative to the stem, at least one of the body and stem controlling the selected offset of the body relative to the stem, and the stem includes a center line, the end wall disposed at one of a plurality of predetermined angles with respect to the center line, the predetermined angle of the end wall relative to the center line controlling the selected angle of the head relative to the stem and the selected offset of the body relative to the stem. ### Claim 3 (depends on 2) The humeral prosthetic device according to claim 2, wherein the stem comprises a series of the stems, each of the stems having a different predetermined end wall to center line angle, the stems being selectable for providing a desired selected angle of the head relative to the stem and a desired selected lateral offset of the body relative to the stem. ### Claim 4 (depends on 2) The humeral prosthetic device according to claim 2, wherein the stem includes an end wall and a center line, the end wall disposed at one of a plurality of predetermined angles with respect to the center line, the predetermined angle of the end wall relative to the center line controlling the selected angle of the head relative to the stem. ### Claim 5 (depends on 2) The humeral prosthetic device according to claim 2, further comprising an insert which coacts with the body and the head to provide superior, inferior, anterior, and posterior positioning of the head relative to the body. ### Claim 6 (depends on 5) The humeral prosthetic device according to claim 5, wherein the insert includes a locking projection laterally offset from a central axis of the insert. ### Claim 7 (depends on 6) The humeral prosthetic device according to claim 6, wherein the another wall of the body comprises an inclined wall which defines at least one aperture for receiving the locking projection of the insert. ### Claim 8 (depends on 7) The humeral prosthetic device according to claim 7, wherein the locking projection and the at least one aperture include peripheral surfaces which enable the insert to be rotatively positioned relative to the body in a selective manner. ### Claim 9 (depends on 5) The humeral prosthetic device according to claim 5, wherein the head includes a back side that defines at least one recess for receiving the insert, the at least one recess being laterally offset from a central axis of the head. ### Claim 10 (depends on 9) The humeral prosthetic device according to claim 9, wherein the insert and the at least one recess include peripheral surfaces which are configured to enable the insert to be rotatively positioned relative to the head in a selective manner. ### Claim 11 (depends on 5) The humeral prosthetic device according to claim 5, wherein the insert includes a locking projection laterally offset from a central axis of the insert and the head includes a back side that defines at least one recess for receiving the insert, the at least one recess being laterally offset from a central axis of the head. ### Claim 12 (depends on 11) The humeral prosthetic device according to claim 11, wherein the another wall of the body comprises an inclined wall which defines at least one aperture for receiving the locking projection of the insert. ### Claim 13 (depends on 12) The humeral prosthetic device according to claim 12, wherein the locking projection and the at least one aperture include peripheral surfaces which enable the insert to be rotatively positioned relative to the body in a selective manner. ### Claim 14 (depends on 12) The humeral prosthetic device according to claim 12, wherein the insert and the at least one recess include peripheral surfaces which are configured to enable the insert to be rotatively positioned relative to the head in a selective manner. ### Claim 15 (depends on 12) The humeral prosthetic device according to claim 12, wherein the locking projection and the at least one aperture include peripheral surfaces which enable the insert to be rotatively positioned relative to the body in a selective manner and the insert and the at least one recess include peripheral surfaces which are configured to enable the insert to be rotatively positioned relative to the head in a selective manner. ### Claim 16 (depends on 2) The humeral prosthetic device according to claim 2, further comprising a post which coacts with the head to provide superior, inferior, anterior, and posterior positioning of the head relative to the body. ### Claim 17 (depends on 16) The humeral prosthetic device according to claim 16, wherein the head includes a back side which defines at least one recess for receiving the post, the at least one recess being laterally offset from a central axis of the head. ### Claim 18 (depends on 17) The humeral prosthetic device according to claim 17, wherein the post and the at least one recess include peripheral surfaces which are configured to enable the head to be rotatively positioned relative to the body in a selective manner. ### Claim 19 A humeral prosthetic device comprising: a body; a stem for anchoring the device in a humeral canal of a humerus, the stem coupled to a first area of the body; and a head for replacing a natural humeral head of the humerus, the head coupled to a second area of the body and disposed at a selected angle relative to the stem; at least one of the body and stem controlling the selected angle of the head relative to the stem; the first area of the body defining a base wall disposed at one of a plurality of predetermined angles relative to a rear wall of the body, the predetermined angle of the base wall relative to the rear wall controlling the selected angle of the head relative to the stem; wherein the body comprises a series of the bodies, each of the bodies having a different predetermined base wall to rear wall angle, the bodies being selectable for providing a desired selected angle of the head relative to the stem. ### Claim 20 A humeral prosthetic device comprising: a body; a stem for anchoring the device in a humeral canal of a humerus, the stem coupled to a first area of the body; and a head for replacing a natural humeral head of the humerus, the head coupled to a second area of the body and disposed at a selected angle relative to the stem; at least one of the body and stem controlling the selected angle of the head relative to the stem; the stem including an end wall and a center line, the end wall disposed at one of a plurality of predetermined angles with respect to the center line, the predetermined angle of the end wall relative to the center line controlling the selected angle of the head relative to the stem; wherein the stem comprises a series of the stems, each of the stems having a different predetermined end wall to center line angle, the stems being selectable for providing a desired selected angle of the head relative to the stem.