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US 9,168,156 B2Granted
Trial coupler systems and methods
AssigneeSmith & Nephew, Inc.
InventorsPaul Charles Crabtree, Roger Ryan Dees, Mark Ellsworth Nadzadi
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention provide a trial coupler system for use in preparing a patient for an implant. Certain embodiments provide a system including a coupling device (20) and a trial component interface (40) that allows a trial stem (100) to be offset in relation to the respective trial components at an orientation that matches the geometry of the patient. Once the precise positioning is obtained, the trial coupler device (10) can be locked while on the patient's bone so the assembly can be removed without disturbing the desired orientation.
Claims39
A trial coupler system, comprising:
- a tibial tray;
- a coupling device defining an inner cavity;
- a trial component interface configured to removably couple to the tibial tray, the trial component interface having a connection member configured to be received within the inner cavity, the trial component interface defining a bore having a single central axis, the bore extending through the trial component interface;
- a fastener configured to be received within the bore and the inner cavity to couple the trial component interface and the coupling device, the fastener adapted to allow the trial component interface to rotate relative to the coupling device upon fully seating the fastener;
- a lock member having external threads for engaging a threaded portion of the bore to restrict relative rotational movement of the trial component interface and the coupling device;
- and
- a trial stem adapted to be removably coupled to the coupling device.
4 more elements
A trial coupler system, comprising:
- a femoral condylar component;
- a coupling device defining an inner cavity;
- a trial component interface configured to removably couple to the femoral condylar component, the trial component interface having a connection member configured to be received within the inner cavity, the trial component interface defining a bore having a single central axis, the bore extending through the trial component interface;
- a fastener configured to be received within the bore and the inner cavity to couple the trial component interface and the coupling device, the fastener adapted to allow the trial component interface to rotate relative to the coupling device upon fully seating the fastener;
- a lock member having external threads for engaging a threaded portion of the bore to restrict relative rotational movement of the trial component interface and the coupling device;
- and
- a trial stem adapted to be removably coupled to the coupling device.
4 more elements
A trial coupler system, comprising
- (a) a trial stem;
- (b) a trial component;
- (c) a coupling device adapted to removably couple to the trial stem, wherein the coupling device has a threaded portion;
- (d) a trial component interface adapted to cooperate with the coupling device and removably couple to the trial component, wherein one of the trial component interface and the coupling device includes a connection member configured to be received by the other of the trial component interface and the coupling device to rotationally couple the trial component interface and the coupling device;
- (e) a fastener having a threaded shaft adapted to be received by the threaded portion, the fastener adapted to secure the coupling device to the trial component interface and to allow the trial component interface to rotate relative to the coupling device upon fully seating the fastener;
- and
- (f) a rotational lock member adapted to be inserted into the trial component interface to lock rotational freedom between the coupling device and the trial component interface.
4 more elements
A trial coupler system, comprising
- (a) a trial stem;
- (b) a tibial tray;
- (c) a coupling device adapted to removably couple to the trial stem;
- (d) a trial component interface adapted to cooperate with the coupling device and removably couple to the tibial tray, wherein one of the trial component interface and the coupling device includes a connection member configured to be received by the other of the trial component interface and the coupling device to rotationally couple the trial component interface and the coupling device;
- (e) a fastener adapted to secure the coupling device to the trial component interface and to allow the trial component interface to rotate relative to the coupling device upon fully seating the fastener;
- and
- (f) a rotational lock member adapted to be inserted into the trial component interface to lock rotational freedom between the coupling device and the trial component interface.
4 more elements
A trial coupler system, comprising
- (a) a trial stem;
- (b) a femoral condylar component;
- (c) a coupling device adapted to removably couple to the trial stem;
- (d) a trial component interface adapted to cooperate with the coupling device and removably couple to the femoral condylar component, wherein one of the trial component interface and the coupling device includes a connection member configured to be received by the other of the trial component interface and the coupling device to rotationally couple the trial component interface and the coupling device;
- (e) a fastener adapted to secure the coupling device to the trial component interface and to allow the trial component interface to rotate relative to the coupling device upon fully seating the fastener;
- and
- (f) a rotational lock member adapted to be inserted into the trial component interface to lock rotational freedom between the coupling device and the trial component interface.
4 more elements
A trial coupler system, comprising:
- (a) a trial stem;
- (b) a trial component;
- (c) an offset coupling device having an inner cavity defined by an upper portion, a lower portion, and a threaded portion between the upper and lower portions, the lower portion adapted to removably couple to the trial stem;
- (d) a trial component interface adapted to cooperate with the upper portion and having a trial connection system adapted to removably couple to the trial component, the trial component interface having a connection member adapted to be received by the upper portion of the inner cavity, the trial component interface having a threaded bore ending in a lower ledge;
- (e) a fastener having a head and a threaded shaft, the fastener adapted to be inserted into the threaded bore of the trial component interface such that the head abuts the lower ledge of the interface and the shaft extends through the threaded bore and into the inner cavity threaded portion of the offset coupling device, the fastener adapted to secure the offset coupling device to the trial component interface and to allow the trial component interface to rotate relative to the coupling device upon fully seating the fastener;
- and
- (f) a rotational lock member adapted to be inserted into the threaded bore of the trial component interface and secure against the fastener in order to lock rotational freedom between the offset coupling device and the trial component interface.
4 more elements
Dependencies are inferred from the claim text.