Abstract: A surgical navigation system for providing computer-aided surgery. The surgical navigation system includes a handheld surgical tool with computer-aided navigation, an imaging device, an alignment module, and a user interface module. The handheld surgical tool includes at least one sensor for measuring a position of the tool in three dimensions, and at least one set key. A processor and at least one display device are associated with the handheld surgical tool and configured to display a target trajectory of the handheld surgical tool for the surgical procedure.

Abstract: A surgical navigation system for providing computer-aided surgery. The surgical navigation system includes a handheld surgical tool with computer-aided navigation, a graphical user interface module, and optionally an imaging device. The handheld surgical tool includes a handle that may comprise at least one sensor for detecting orientation of the. A computing device and at least one display device are associated with the handheld surgical tool and configured to display a target trajectory of the handheld surgical tool for the surgical procedure.

Abstract: An implant insertion tool or tools interact with a user interface provided by a computer to guide the operator to insert the implant at a desired location and trajectory. The user interface may guide an operator through a registration process, a process for positioning the tip of the implant at the desired location, and a process for aligning the implant to have the desired insertion trajectory. The implant may be a medical implant such as a K-wire that is inserted into a bone, such as the glenoid of a scapula during shoulder arthroplasty or reverse arthroplasty.

Abstract: A handheld surgical tool includes a handle, an instrument shaft, and a navigation device, which includes at least one sensor unit for sensing positional data, a computing unit configured to determine a position in space based on signals of the sensor unit, at least one set key and a position memory configured to store a data set for a position upon activation of the at least one set key. A comparator is operatively connected to the position memory for comparing an actual position against a stored position in at least two different operation modes and for generation of a deviation signal, wherein operation modes differ in that a first mode is configured for a reduced comparison only which lacks at least one spatial dimension. A feedback device is provided supplied with the deviation signal and being configured to indicate direction and preferably magnitude of any deviation.

Abstract: A surgical navigation system for providing computer-aided surgery. The surgical navigation system includes a handheld surgical tool with computer-aided navigation, an imaging device, an alignment module, and a user interface module. The handheld surgical tool includes at least one sensor for measuring a position of the tool in three dimensions, and at least one set key. A processor and at least one display device are associated with the handheld surgical tool and configured to display a target trajectory of the handheld surgical tool for the surgical procedure.

Abstract: A handheld surgical tool includes a handle, an instrument shaft, and a navigation device, which includes at least one sensor unit for sensing positional data, a computing unit configured to determine a position in space based on signals of the sensor unit, at least one set key and a position memory configured to store a data set for a position upon activation of the at least one set key. A comparator is operatively connected to the position memory for comparing an actual position against a stored position in at least two different operation modes and for generation of a deviation signal, wherein operation modes differ in that a first mode is configured for a reduced comparison only which lacks at least one spatial dimension. A feedback device is provided supplied with the deviation signal and being configured to indicate direction and preferably magnitude of any deviation.

Abstract: A micromechanical sensor for measuring z-axis angular rate includes a substrate defining a substrate plane and a z-axis perpendicular to the substrate plane. A first vibratory structure has a first shuttle-mass and a first proof-mass coupled to the first shuttle-mass by a first sense-mode spring. There is a second vibratory structure in a mirror-symmetrical setup (excepting the electrodes). First and second suspension structures suspend the first and second shuttle-masses above the substrate flexibly in drive-mode direction. Both shuttle-masses are suspended above the substrate for movement at least in drive-mode direction, wherein drive-mode direction and sense-mode direction are parallel to the substrate plane. Both vibratory structures are elastically coupled to each other.