Devices and methods for performing a surgical step or surgical procedure with visual guidance using an optical head mounted display are disclosed.

A surgical rotational tool driver and method. The driver includes a driveline extending within a hollow shaft and a head part including connection features for connecting to a connection member of a surgical rotational tool. The connection features of the head part include a housing and a pair of jaw member each including jaws for receiving the connection member. Each jaw member is pivotally mounted for rotation between: a first position for receipt of the connection member and a second position for retaining the connection member. The connection features of the head part further include a locking mechanism including a pair of catches for engaging with a respective catch of each jaw member to lock the jaw members in the second position. The locking mechanism also includes a release member slideably moveable within the housing to release the catches of the locking mechanism from the catches of the jaw members.

A medical device for delivering an action to an area of a hip joint or its surroundings, inside a human body of a patient, the hip joint comprising a collum femur and a ball shaped caput femur, being the proximal parts of the femoral bone, and an acetabulum, being a bowl shaped part of the pelvic bone, said medical device comprising an elongated member, having a length axis along its elongated distribution, and a first portion having an end being adapted to enter the body of the patient, said first portion of said elongated member having a first portion cross-section area substantially perpendicular to the length axis of the elongated member, said first portion is adapted to pass through a hole in a bone of the patient, the hole having a hole cross-section area, wherein said first portion cross-section area is smaller than said hole cross-section area, the first portion comprising a mounting portion, and a holding member adapted to hold a mechanical element inside the body of said patient, and a mechanical element having a functional status ready to deliver an action inside the body when held by said holding member inside the body of the patient, wherein said mechanical element has a mechanical element cross-section area substantially perpendicular to the length axis of the elongated member, being substantially larger than said first portion cross-section area and unable to pass through the holes when said mechanical element is in said functional status, characterized in that the mechanical element comprises at least one mounting recess for mounting the mechanical element onto the mounting portion of the elongated member in a direction substantially perpendicular to the elongated member, such that a user of the medical device can mount the mechanical element on the elongated member without having access to the end of the first portion of the elongated member, wherein said mechanical element is adapted to be used during an operation in the hip joint or its surroundings, when placed inside the body.

An orthopaedic surgical instrument, in particular a milling cutter, including: an inner rod extended along an own longitudinal axis and provided with an attachment end to a motorized member; a tubular envelope wrapping the inner rod; an operating head at a rod end which is opposite said attachment end; a gimbal joint between the rod end and a tool of said operating head such that said tool is extended along an angled axis with respect to the longitudinal axis. The milling cutter according to the invention improves the precision of execution of the positions of the holes in any surgical operation with anatomy which is difficult to get access to, such as in knee, pelvis and ankle.

A thin-blade chisel system, for separating an outer surface of an orthopedic implant and an inner surface of a bone from each other, includes a thin-blade chisel having a blade tip at a distal end portion in a longitudinal direction, and a hammering direction changing tool engaged with the thin-blade chisel to apply a force in an advancing direction of the blade tip. The thin-blade chisel includes a hammering blow-receiving part, preferably a through hole penetrating in a thickness direction, at a predetermined position on a proximal side closer to the surgeon. The hammering direction changing tool includes a hammering portion to be hammered, located at a proximal end portion, and a recess formed at a distal end portion, to be engaged with an inner circumferential surface of the through hole.

A medical drive unit receives and rotationally drives a medical, preferably surgical tool, by a motor, preferably an electric motor, housed in the drive unit which can be operated via a control or regulation unit. The medical drive unit includes a sensor device for directly or indirectly detecting or determining a movement of the drive unit or a holding movement of the user which is triggered by the motor corresponding to the power applied to the tool and a kickback control which automatically effects a reduction of the driving power or turning off of the motor upon detection of a predetermined drive unit or holding movement or a predetermined drive-unit or holding-movement amount.

A system and method for improving installation of a prosthesis which may include assembly of a modular prosthesis. Devices include prosthesis installation tools, prosthesis assembly tools, site preparation systems, and improved power tools used in implant site preparation, the tools including a secondary motion that preferably includes an ultrasonic vibration.

Various embodiments of a variable diameter calcar planer for reaming a boney surface and associated methods of using the same are disclosed. An example device may include a cylindrical body defining a longitudinal axis extending from a proximal end to a distal end and a positioning ring disposed at the distal end. Various devices may include plurality of primary blades that are radially disposed on the positioning ring that are configured for reaming at the first diameter. Various devices may include a collar disposed around the cylindrical body and axially aligned with the longitudinal axis, for example. Some devices may further include a plurality of secondary blades, configured to expand a reaming area by moving the collar towards the distal end. In various embodiments, the collar facilitates reaming of a boney surface at various diameters by moving the blades laterally outward with respect to the longitudinal axis.

Methods and devices are disclosed relating improved articular models, implant components, and related guide tools and procedures. In addition, methods and devices are disclosed relating articular models, implant components, and/or related guide tools and procedures that include one or more features derived from patient-data, for example, images of the patient's joint. The data can be used to create a model for analyzing a patient's joint and to devise and evaluate a course of corrective action. The data also can be used to create patient-adapted implant components and related tools and procedures.

A surgical instrument for operating hip joint osteoarthritis in a human patient is provided. The hip joint comprises an acetabulum, being a part of the pelvic bone, and a caput femur, being the proximal part of the femoral bone. The surgical instrument is adapted to assist in the operating of the hip joint osteoarthritis from the abdominal side of the pelvic bone of said human patient.