5 results about "Optical tracker" patented technology

An apparatus for configuring a wearable device for exercise tracking includes a data storage unit for storing sensor data generated by a sensor arrangement in the wearable device based on sensed movement of the wearable device and optical movement data including representations of an individual obtained from an image-based monitoring system; and a processing unit configured to: execute a movement tracker model on the sensor data to determine a first exercise activity and an associated first confidence indicator; execute an optical tracker model on the optical movement data to determine a second exercise activity and an associated second confidence indicator; process the movement tracker model based on the first confidence indicator and the second confidence indicator.

This invention discloses a method for adjusting the optical axis consistency of an electro-optical tracker in an outdoor environment. The method includes: determining the horizontal center of the laser ranging of the electro-optical tracker based on the horizontal target; keeping the pitch angle of the electro-optical tracker constant, adjusting the visible light device and infrared device of the electro-optical tracker along the horizontal direction; determining a horizontally oriented and stationary object as the vertical target within the neighborhood of the horizontal target; determining the vertical center of the laser ranging of the electro-optical tracker; and adjusting the visible light device and infrared device of the electro-optical tracker along the vertical direction. This invention achieves optical axis consistency for laser, visible light, and infrared light in an outdoor environment without the need for external debugging devices or professional optical axis adjustment devices.

The present disclosure describes a hybrid navigation system comprising two or more data acquisition apparatuses of different types that addresses limitations of current methods. In some embodiments, the two or more data acquisition apparatuses include at least one structured light three-dimensional scanner-based navigation system and at least one other navigation system (e.g., including but not limited to stereoscopic, ultrasound, electromagnetic, and / or intraoperative imaging). The hybrid approach improves real-time anatomical tracking, reduces the invasiveness of pin-based optical trackers, and maintains compatibility with established workflows. The principles of this disclosure extend across diverse surgical applications, offering enhanced accuracy, flexibility, and efficiency in both traditional and next-generation navigation environments.

The application relates to a lower limb length determination method, device and computer equipment based on hip replacement, which comprises the following steps: acquiring a medical image of a hip joint part, determining a position of an anterior superior iliac spine and a position of a lesser trochanter from the medical image; acquiring a center position of an acetabular liner according to a first optical tracker array installed on an acetabular cup assembly device, and acquiring a ball center position of a femoral head prosthesis according to a second optical tracker array installed on a femoral stem prosthesis; obtaining a pelvic side lower limb length according to the position of the anterior superior iliac spine and the center position of the acetabular liner; obtaining a femoral side lower limb length according to the position of the lesser trochanter and the ball center position of the femoral head prosthesis; and obtaining a target lower limb length based on the pelvic side lower limb length and the femoral side lower limb length. The method can avoid the problem of inaccurate lower limb length calculation caused by the disengagement of the prosthesis ball center from the liner center in hip joint surgery, and improves the accuracy of the determined lower limb length.

An optical tracker and a surgical device, the surgical device including a shaft defining a longitudinal axis, wherein the shaft has a first shaft portion configured to be inserted into a patient and a second shaft portion configured to be located outside the patient when the first shaft portion is inserted in the patient. The surgical device further includes an actuation member actuatable relative to the first shaft portion and an operation member operable relative to the second shaft portion, the operation member configured to actuate the actuation member when operated. In addition, the surgical device includes a tracker coupled with the operation member such that operation of the operation member causes the tracker to move relative to the shaft (e.g., rotate about the longitudinal axis).