Back to results
US 12,472,067 B2Granted
Orthopaedic implant systems including fixation features and methods of repair
AssigneeArthrex, Inc.
InventorsRudraksh Khosla, Mark Wise, John David Paterson, Gregory Guederian
Life of this patent
Estimating the term…
Abstract
This disclosure relates to orthopaedic implant systems and methods for restoring functionality to a bone and/or joint. The implant systems disclosed herein may include a taper locking mechanism to limit or otherwise oppose separation between components and may include one or more flanges adapted to abut an exterior of the bone.
Claims25
An orthopaedic implant system comprising:
- a stem portion insertable into bone;
- a mounting portion extending from the stem portion, wherein the mounting portion includes a first mounting bore extending inwardly from a first engagement face and a raised protrusion extending outwardly from the first engagement face, and wherein the raised protrusion tapers along a declined face toward the first engagement face;
- a head portion adapted to mount an articulation member, wherein the head portion includes a head bore extending inwardly from a second engagement face and a recess extending inwardly from the second engagement face, wherein a periphery of the recess includes an inclined face sloping towards an opening of the recess along the second engagement face;
- wherein the raised protrusion is insertable through the opening and into the recess such that the declined face and the inclined face abut each other in an installed position;
- and
- wherein the first mounting bore extends along a first mounting bore axis in a direction away from the raised protrusion such that the second engagement face slides across the first engagement face and such that the inclined face moves towards the first mounting bore axis to compress the inclined face against the declined face in response to securing a common fastener in the head bore and the first mounting bore.
3 more elements
An orthopaedic implant system comprising:
- a stem portion insertable into bone;
- a mounting portion extending from the stem portion, wherein the mounting portion includes a first mounting bore extending inwardly from a first engagement face and a raised protrusion extending outwardly from the first engagement face, and wherein the raised protrusion tapers along a declined face toward the first engagement face;
- and
- a head portion adapted to mount an articulation member, wherein the head portion includes a head bore extending inwardly from a second engagement face and a recess extending inwardly from the second engagement face, wherein a periphery of the recess includes an inclined face sloping towards an opening of the recess along the second engagement face;
- wherein the raised protrusion is insertable through the opening and into the recess such that the declined face and the inclined face abut each other in an installed position;
- wherein the first mounting bore extends along a first mounting bore axis in a direction away from the raised protrusion such that the inclined face moves towards the first mounting bore axis to compress the inclined face against the declined face in response to securing a common fastener in the head bore and the first mounting bore;
- wherein the first engagement face of the mounting portion extends along a first reference plane, and the first mounting bore axis intersects the first reference plane to establish an acute first bore angle;
- wherein the declined face of the raised protrusion extends along a second reference plane, and the second reference plane intersects the first reference plane to establish an acute ramp angle;
- and
- wherein the ramp angle is less than the first bore angle.
7 more elements
An orthopaedic implant assembly comprising:
- a head portion adapted to mount an articulation member, the articulation member configured to mate with an opposed articular surface, wherein the head portion includes a head bore extending inwardly from a second engagement face and a recess extending inwardly from the second engagement face, wherein periphery of the recess includes an inclined face sloping towards a opening of the recess along the second engagement face;
- a stem portion insertable into bone;
- a mounting portion extending from the stem portion, wherein the mounting portion includes a first mounting bore extending inwardly from a first engagement face and a raised protrusion extending outwardly from the first engagement face, and wherein the raised protrusion tapers along a declined face toward the first engagement face;
- a collar portion adapted to interconnect the head portion and the stem portion;
- and
- a flange portion releasably securable to the collar portion, the flange portion including a flange body and at least one engagement flange dimensioned to abut bone;
- wherein the raised protrusion is insertable through the opening and into the recess such that the declined face and the inclined face abut each other in an installed position;
- wherein the first mounting bore extends along a first mounting bore axis in a direction away from the raised protrusion such that the inclined face moves towards the first mounting ore axis to compress the inclined face against the declined face in response to securing a common fastener in the head bore and the first mounting bore;
- and
- wherein the collar portion includes a channel dimensioned to at least partially receive the flange body, the flange portion is moveable in a direction towards the collar portion to trap a portion of bone between the at least one engagement flange and the stem portion in response to fixing a length of a flexible construct that couples the collar portion and the flange portion in an installed position.
7 more elements
Dependencies are inferred from the claim text.