Patent classifications
A61B17/1778
Patient-specific humeral guide designs
A humeral cut guide member for resectioning or resurfacing a humeral head, including a bone-engagement member including a first patient-specific bone-engagement surface that is complementary and made to substantially mate and nest in only one position on a specific patient's humeral head; a registration member connected to the bone-engagement member including a second patient-specific bone engagement surface that is sized and made to substantially mate and nest in only one position with the specific patient's bicipital groove; and a cut guide plate connected to the bone-engagement member and defining an elongated slot.
Patient-specific augmented glenoid systems and methods
A glenoid implant comprises a body comprising: an articular surface and a scapula-engaging surface, the scapula-engaging surface including first and second portions angled relative to each other; and a fixation feature extending from the scapula-engaging surface. A method comprises: forming a planar bone surface at a glenoid using a guide pin; forming a first bore into the glenoid located near the guide pin; forming a second bore into the glenoid offset from the first bore; inserting an augment ream guide into the first and second bores; and forming an angled bone surface at the glenoid relative to the planar bone surface using the augment ream guide. A ream guide comprises: a base having first and second surfaces; a bone peg extending from the first surface; an alignment peg spaced from the bone peg; and a guide peg extending from the second surface at an oblique angle to the bone peg.
GUIDES AND INSTRUMENTS FOR IMPROVING ACCURACY OF GLENOID IMPLANT PLACEMENT
A reaming guide is provided that includes a peripheral member configured to mate with a peripheral guide feature; a rigid body extending from the peripheral member to adjacent to a reaming head of a reamer, where the rigid body is configured to be mounted to the reamer proximal of the reaming head; and a depth stop coupled with the rigid body, the depth stop having a distal portion configured to contact a first reamed glenoid surface when the reaming head has fully reamed a second reamed surface to a planned depth, the second reamed surface being angled to the first reamed surface.
Virtual guidance for ankle surgery procedures
An example method includes registering, via a visualization device, a virtual model of a portion of an anatomy of an ankle of a patient to a corresponding portion of the anatomy of the ankle viewable via the visualization device, the virtual model obtained from a virtual surgical plan for an ankle arthroplasty procedure to attach a prosthetic to the anatomy. The example method also comprises displaying, via the visualization device and overlaid on the portion of the anatomy, a virtual guide that guides at least one of preparation of the anatomy for attachment of the prosthetic or attachment of the prosthetic to the anatomy.
GLENOID ANCHOR GUIDE
A guide provides for placing a suture anchor into an outer rim of a glenoid cavity of a patient adjacent an edge of a glenoid labrum. The guide comprises an elongated guide tube having an axial lumen with a distal opening a rim engagement member pivotally attached to the elongated tube adjacent the distal opening. The rim engagement member has a first contact surface and a second contact surface each of which are distal of the guide tube and are separated from each other and disposed on opposite lateral sides of the guide tube whereby to allow placement of the contact member over the glenoid rim, with subsequent angular positioning of the guide tube and passage of an instrument down the lumen to the labrum.
METHOD USING A COMBINATION REAMER/DRILL BIT FOR SHOULDER ARTHROPLASTY
A method of using a combination device includes accessing a glenoid of a shoulder and coupling a power extension and the combination device, the power extension configured to couple with a power tool. The method further includes reaming a portion of the accessed glenoid using the coupled power extension and combination device and then decoupling the power extension and the combination device. Next, a manual extension and the combination device are coupled and the coupled manual extension is used to align a first drill guide of the combination device with a desired trajectory of a first fixation peg of a glenoid component with the combination device positioned against the reamed portion of the accessed glenoid. A drill bit is guided with the aligned first drill guide to bore a first fixation peg bore in the glenoid.
METHODS FOR PATIENT-SPECIFIC SHOULDER ARTHROPLASTY
A method of determining an optimal position of a glenoid implant. The method includes identifying a center point of a patient's glenoid fossa based on an image of the patient's glenoid fossa; determining the optimal position of the glenoid implant based on the location of the center point relative to a medial point of the patient's scapula; and selecting orientation of an alignment pin based on the determined optimal glenoid implant position such that the glenoid fossa will be prepared to receive the glenoid implant at the optimal position when the gienoid fossa is prepared with a cutting device or guide coupled to the alignment pin.
Glenoid implant surgery using patient specific instrumentation
A pin placement instrument for placing a pin in a bone comprises an anatomical interface with a hook-like portion being opened in a lateral direction of the instrument to receive a bone therein in a planned position. A drill guide is connected to the anatomical interface and defining at least one guide slot in a longitudinal direction of the instrument. The guide slot has a lateral opening over its full length in the drill guide to allow lateral withdrawal of the instrument in said lateral direction with the pin placed in the bone passing through the lateral opening. A bushing is removably placed in said guide slot via said longitudinal direction in a planned fit, the bushing defining a throughbore aligned with the guide slot and adapted to receive the pin extending in said longitudinal direction when the bushing is in the guide slot for pin placement.
METHODS AND SYSTEMS FOR PREPARING BONE FOR A SURGICAL PROCEDURE
Systems and methods for preparing a bone for a surgical procedure are provided. In general, the described techniques use a surgical guide device including a cannula having first and second parallel elongate channels adjacent to one another, and first and second elongate sleeves configured to be removably and replaceably received in the first and second channels, respectively. The first sleeve has a plurality of openings formed therein, each being in communication with a respective wire-receiving lumen extending through the first sleeve. Each of the openings defines a different offset distance between the wire-receiving lumen in communication with that opening and a wire-receiving lumen extending through the second sleeve. The surgical device can be manipulated so as to define positions of first and second openings in a bone, such as a glenoid or other bone, to receive bone screws or other elements for attaching a bone graft to the bone.
Humeral implant anchor system
A stemless humeral shoulder assembly having a base member and an anchor advanceable into the base member. The base member can include a distal end that can be embedded in bone and a proximal end that can be disposed at a bone surface. The base member can also have a plurality of spaced apart arms projecting from the proximal end to the distal end. The anchor can project circumferentially into the arms and into a space between the arms. When the anchor is advanced into the base member, the anchor can be exposed between the arms. A recess can project distally from a proximal end of the anchor to within the base member. The recess can receive a mounting member of an anatomical or reverse joint interface.