Abstract: A method and system for determining the orientation of a surgical tool with respect to a bone of a patient discloses initializing a first active sensor and a second active sensor relative to each other with the first active sensor and second active sensor having a predetermined (relative) orientation. The first active sensor is configured to sense a change in its orientation, provide first information relating to the change and be attached to a bone in a relationship to a reference plane therefor, for use during an operation. The second active sensor is configured to sense a change in its orientation, provide second information relating to the change and be attached to a surgical tool. The relative orientation of the active sensors is useful to determine the relative orientation of the tool and the reference frame of the bone.

Abstract: Systems, methods and devices for use in tracking are described, using optical modalities to detect spatial attributes or natural features of objects, such as, tools and patient anatomy. Spatial attributes or natural features may be known or may be detected by the tracking system. The system, methods and devices can further be used to verify a calibration of a tool either by a computing unit or by a user. Further, the disclosure relates to detection of spatial attributes, including depth information, of the anatomy for purposes of registration or to create a 3D surface profile of the anatomy.

Abstract: Systems, methods and devices are disclosed for use in electronic guidance systems for surgical navigation. A sensor is provided with an optical sensor and an inclinometer (e.g. accelerometer or other inclination measuring sensor) and communicates measurements of patient inclination to an inter-operative computing unit. A registration device is useful to construct a registration coordinate frame. The direction of gravity may be used to construct the registration coordinate frame such as determined from inclination measurements.

Abstract: Systems, methods and devices are disclosed for use in electronic guidance systems for surgical navigation. A sensor is provided with an optical sensor and an inclinometer (e.g. accelerometer or other inclination measuring sensor) and communicates measurements of patient inclination to an inter-operative computing unit. A registration device is useful to construct a registration coordinate frame. The direction of gravity may be used to construct the registration coordinate frame such as determined from inclination measurements.

Abstract: Systems, methods and devices for use in tracking are described, using optical modalities to detect spatial attributes or natural features of objects, such as, tools and patient anatomy. Spatial attributes or natural features may be known or may be detected by the tracking system. The system, methods and devices can further be used to verify a calibration of a tool either by a computing unit or by a user. Further, the disclosure relates to detection of spatial attributes, including depth information, of the anatomy for purposes of registration or to create a 3D surface profile of the anatomy.

Abstract: A method and system for determining the orientation of a surgical tool with respect to a bone of a patient discloses initializing a first active sensor and a second active sensor relative to each other with the first active sensor and second active sensor having a predetermined (relative) orientation. The first active sensor is configured to sense a change in its orientation, provide first information relating to the change and be attached to a bone in a relationship to a reference plane therefor, for use during an operation. The second active sensor is configured to sense a change in its orientation, provide second information relating to the change and be attached to a surgical tool. The relative orientation of the active sensors is useful to determine the relative orientation of the tool and the reference frame of the bone.

Abstract: A method and system for determining the orientation of a surgical tool with respect to a bone of a patient discloses initializing a first active sensor and a second active sensor relative to each other with the first active sensor and second active sensor having a predetermined (relative) orientation. The first active sensor is configured to sense a change in its orientation, provide first information relating to the change and be attached to a bone in a relationship to a reference plane therefor, for use during an operation. The second active sensor is configured to sense a change in its orientation, provide second information relating to the change and be attached to a surgical tool. The relative orientation of the active sensors is useful to determine the relative orientation of the tool and the reference frame of the bone.

Abstract: A method and system for determining the orientation of a surgical tool with respect to a bone of a patient are disclosed. The method includes defining a bone reference plane using a processor; receiving first information at the processor from a first active sensor attached to the bone at a location having a predetermined relationship with the plane, the first information relating to a movement of the first sensor and wherein changes in orientation to the plane are trackable through changes in orientation of the first sensor; receiving second information from a second active sensor attached to the surgical tool, the second information relating to a movement of the second sensor; and determining a three-dimensional orientation of the surgical tool with respect to the plane based on the first and second information. The reference plane may be defined from distances between at least three predetermined reference locations on the bone.

Abstract: Systems, methods and a sensor alignment mechanism are disclosed for medical navigational guidance systems. In one example, a system to make sterile a non-sterile optical sensor for use in navigational guidance during surgery includes a sterile drape having an optically transparent window to drape the optical sensor in a sterile barrier and a sensor alignment mechanism. The alignment mechanism secures the sensor through the drape in alignment with the window without breaching the sterile barrier and facilitates adjustment of the orientation of the optical sensor. The optical sensor may be aligned to view a surgical site when the alignment mechanism, assembled with the sterile drape and optical sensor, is attached to a bone. The alignment mechanism may be a lockable ball joint and facilitate orientation of the sensor in at least two degrees of freedom. A quick connect mechanism may couple the alignment mechanism to the bone.

Abstract: Presented are methods and systems for determining, monitoring, and displaying the relative positioning of two rigid bodies during surgery. In particular, the present disclosure relates to methods and systems for positioning a prosthesis relative to a bone during a surgery as well as to systems and methods for verifying resulting relative positioning of adjacent bones.

Abstract: Systems, methods and a sensor alignment mechanism are disclosed for medical navigational guidance systems. In one example, a system to make sterile a non-sterile optical sensor for use in navigational guidance during surgery includes a sterile drape having an optically transparent window to drape the optical sensor in a sterile barrier and a sensor alignment mechanism. The alignment mechanism secures the sensor through the drape in alignment with the window without breaching the sterile barrier and facilitates adjustment of the orientation of the optical sensor. The optical sensor may be aligned to view a surgical site when the alignment mechanism, assembled with the sterile drape and optical sensor, is attached to a bone. The alignment mechanism may be a lockable ball joint and facilitate orientation of the sensor in at least two degrees of freedom. A quick connect mechanism may couple the alignment mechanism to the bone.

Abstract: Systems, methods and devices are disclosed for use in electronic guidance systems for surgical navigation. A sensor is provided with an optical sensor and an inclinometer (e.g. accelerometer or other inclination measuring sensor) and communicates measurements of patient inclination to an inter-operative computing unit. A registration device is useful to construct a registration coordinate frame. The direction of gravity may be used to construct the registration coordinate frame such as determined from inclination measurements.

Abstract: Presented are methods and systems for determining, monitoring, and displaying the relative positioning of two rigid bodies during surgery. In particular, the present disclosure relates to methods and systems for positioning a prosthesis relative to a bone during a surgery as well as to systems and methods for verifying resulting relative positioning of adjacent bones.

Abstract: Systems, methods and devices are disclosed for use in electronic guidance systems for surgical navigation. A sensor is provided with an optical sensor and an inclinometer (e.g. accelerometer or other inclination measuring sensor) and communicates measurements of patient inclination to an inter-operative computing unit. The computing unit is configured to determine patient movement (e.g. relative to an initial patient position) and provide inclination measurements graphically via a GUI to represent patient movement during a procedure. The graphic may be selectively displayed. In one example, a bubble level graphic is displayed to indicate patient movement. A direction of the bubble level may utilize a registration coordinate frame of the patient and the current inclination expressed with respect to the anatomical directions of the patient.

Abstract: Provided are methods and systems related to computer-assisted joint replacement surgery, and corresponding instrumentation systems. In one example, there is provided a system for guided surgery comprising: a sensor for coupling to a first bone to receive positional signals; a beacon for coupling to an object to provide the positional signals to the sensor, the object comprising one of a second bone and a surgical tool; a patient-specific jig (PSJ) for guiding a relative position of the sensor and the first bone during coupling to position the sensor in a predetermined pose in an anatomical coordinate frame; and an intra-operative computing unit in communication with the sensor, the intra-operative computing unit configured to calculate poses of the beacon with respect to the anatomical coordinate frame utilizing pre-operative data representing the PSJ and display positional information for the object in real time.

Abstract: Systems, methods and devices for use in tracking are described, using optical modalities to detect spatial attributes or natural features of objects, such as, tools and patient anatomy. Spatial attributes or natural features may be known or may be detected by the tracking system. The system, methods and devices can further be used to verify a calibration of a tool either by a computing unit or by a user. Further, the disclosure relates to detection of spatial attributes, including depth information, of the anatomy for purposes of registration or to create a 3D surface profile of the anatomy.

Abstract: A non-sterile device such as, a sensor with a kinematic mount is provided, such that there is a positional relationship between an optical system within the sensor, and the kinematic mount. A sterile drape is provided to allow the introduction of non-sterile devices into the sterile surgical field. The sterile drape has a kinematic mount adapter with a sterile side and a non-sterile side, with a known positional relationship between both sides. The non-sterile side (internal to the drape) is configured to kinematically couple to the non-sterile device and the sterile side (external to the drape) is configured to kinematically couple to an object in the sterile field such that the position and orientation of the object with respect to the non-sterile device is known to a processing unit and can be used to calculate positional measurements.

Abstract: Systems, methods and devices are disclosed for use in electronic guidance systems for surgical navigation. A sensor is provided with an optical sensor and an inclinometer (e.g. accelerometer or other inclination measuring sensor) and communicates measurements of patient inclination to an inter-operative computing unit. The computing unit is configured to determine patient movement (e.g. relative to an initial patient position) and provide inclination measurements graphically via a GUI to represent patient movement during a procedure. The graphic may be selectively displayed. In one example, a bubble level graphic is displayed to indicate patient movement. A direction of the bubble level may utilize a registration coordinate frame of the patient and the current inclination expressed with respect to the anatomical directions of the patient.

Abstract: Systems, methods and a sensor alignment mechanism are disclosed for medical navigational guidance systems. In one example, a system to make sterile a non-sterile optical sensor for use in navigational guidance during surgery includes a sterile drape having an optically transparent window to drape the optical sensor in a sterile barrier and a sensor alignment mechanism. The alignment mechanism secures the sensor through the drape in alignment with the window without breaching the sterile barrier and facilitates adjustment of the orientation of the optical sensor. The optical sensor may be aligned to view a surgical site when the alignment mechanism, assembled with the sterile drape and optical sensor, is attached to a bone. The alignment mechanism may be a lockable ball joint and facilitate orientation of the sensor in at least two degrees of freedom. A quick connect mechanism may couple the alignment mechanism to the bone.

Abstract: Systems, methods and a sensor alignment mechanism are disclosed for medical navigational guidance systems. In one example, a system to make sterile a non-sterile optical sensor for use in navigational guidance during surgery includes a sterile drape having an optically transparent window to drape the optical sensor in a sterile barrier and a sensor alignment mechanism. The alignment mechanism secures the sensor through the drape in alignment with the window without breaching the sterile barrier and facilitates adjustment of the orientation of the optical sensor. The optical sensor may be aligned to view a surgical site when the alignment mechanism, assembled with the sterile drape and optical sensor, is attached to a bone. The alignment mechanism may be a lockable ball joint and facilitate orientation of the sensor in at least two degrees of freedom. A quick connect mechanism may couple the alignment mechanism to the bone.