In some examples, a medical system includes one or more trialing leads implanted within a patient, one or more sensors configured to determine a value for a sensed parameter indicative of an activity level of the patient, and processing circuitry. The processing circuitry may be configured to receive the value from the one or more sensors, determine whether the value is outside a threshold range, and—in response to determining that the value is outside the threshold range—generate information indicating a status of the one or more trialing leads. In some examples, processing circuitry may be configured to output an alert warning that patient movement could dislodge, or has already dislodged, the one or more trialing leads.

An example method includes obtaining an image of a lead implanted in a patient, the lead including one or more electrodes positioned along a longitudinal axis of the lead and a plurality of orientation markers; determining, in the image, respective locations of the electrodes and respective locations of the orientation markers; obtaining a template model corresponding to the lead; determining a transform between the determined locations of the one or more electrodes and the plurality of orientation markers and locations of corresponding electrodes and orientation markers in the template model; and determining the rotational orientation of the lead based on the transform.

A method and a system for determining an in vivo transit distance and a corresponding transit time for an arterial pulse. An example system comprises a radar receiver connected to a processor to perform time-resolved measurements of reflections of wave pulses and to spectrally filter the reflections to select spectral components associated with the arterial pulse. The resulting signal samples are then organized into groups corresponding to different wave pulses, and the groups are processed to identify samples corresponding to a first arterial pulse point and a second arterial pulse point on the body of a subject, and the identified samples are further processed to determine the in vivo transit distance and the corresponding transit time for the arterial pulse. In some embodiments, a collection of arterial pulse points detected by the measurements may be mapped onto a reference constellation for a more-accurate determination of the in vivo transit distance.

A method and device for determining the depth and fluorophore concentration of a fluorophore concentration below the surface of an optically absorbing and scattering medium suitable for use in fluorescence-based surgical guidance such as in tumor resection is described. Long-wavelength stimulus light us used to obtain deep tissue penetration. Recovery of depth is performed by fitting measured modulation amplitudes for each spatial frequency to precomputed modulation amplitudes in a table of modulation amplitudes indexed by optical parameters and depth.

A method for lung nodule evaluation is provided. The method may include obtaining a target image including at least a portion of a lung of a subject. The method may also include segmenting, from the target image, at least one target region each of which corresponds to a lung nodule of the subject. The method may further include generating an evaluation result with respect to the at least one lung nodule based on the at least one target region.

A femoral neck measuring method includes: measuring an affected limb after a femoral stem prosthesis is installed through an optical localization probe, and calculating an actual length of the femoral neck needed by the affected limb according to an osteotomy surface of the affected limb determined after the femoral stem prosthesis is installed; determining a femoral ball prosthesis and a femoral neck prosthesis to be selected according to the calculated actual length of the femoral neck and a length of a femoral neck of a healthy limb measured before surgery; and measuring a length of the affected limb after the femoral ball prosthesis and the femoral neck prosthesis are implanted, and restraining a length difference between the healthy limb and the affected limb by adjusting a length of the femoral neck of the affected limb.

A computer assisted orthopedic surgery system for soft tissue balancing and implant planning is provided. The system includes a three dimensional position tracking system, a robot, a display, and a computer. The computer is operatively in communication with the three dimensional position tracking system, the robot and the display. The computer includes a processor configured to acquire native gap data between a first bone and a second bone of a joint, simulate implant gap data between a first implant model on a first bone model of the first bone and a second implant model on a second bone model of the second bone of the joint based on an implant planning criteria to calculate a plurality of implant gap profiles, determine a best match of the plurality of implant gap profiles to the native gap profile to determine an optimized implant plan, and output the optimized implant plan.

The present document relates to a fetal heart rate monitoring device for monitoring a heart rate of a fetus. The device comprises a carrier that is attachable to a body, a fetal electrocardiographic sensor for providing an output signal, and a reference sensor for filtering the output signal. The device also comprises an actuator arrangement comprising a plurality of actuators distributed in an area around the fetal electrocardiographic sensor. Each actuator is configured for providing a haptic signal to the body. A controller communicatively connects to the fetal electrocardiographic sensor to receive the output signal, and to control the actuators for providing a haptic feedback signal to the body dependent on the output signal. The document also relates to a control method for such a device.

Systems, devices, and methods for controlling cooperative surgical instruments with variable surgical site access trajectories are provided. Various aspects of the present disclosure provide for coordinated operation of surgical instruments accessing a common surgical site from different approach and/or separate body cavities to achieve a common surgical purpose. For example, various methods, devices, and systems disclosed herein can enable the coordinated treatment of tissue by disparate minimally invasive surgical systems that approach the tissue from varying anatomical spaces and must operate differently, but in concert with one another, to effect a desired surgical treatment.

Example methods and systems may be used intraoperatively to help surgeons perform accurate and replicable surgeries, such as knee arthroplasty surgeries. An example system combines real time measurement and tracking components with functionality to compile data collected by the hardware to register a bone of a patient, calculate an axis (e.g., mechanical axis) of the leg of the patient, assist a surgeon in placing cut guides, and verify a placement of an inserted prosthesis.