Provided is a method for evaluating muscle strength characteristics of a limb based on a muscle group model including a first pair of antagonistic one-joint muscles, a second pair of antagonistic one-joint muscles, and a pair of antagonistic two-joint muscles, where the limb has a first rod having a proximal end supported by a first joint and a second rod supported on a free end of the first rod through a second joint. The method includes: measuring a maximum output of a free end of the second rod in at least one predetermined direction; measuring orbiting outputs of the free end of the second rod in all directions in the plane; and creating a hexagonal maximum output distribution corresponding to a contribution amount of each muscle of the muscle group model based on the maximum output in the predetermined direction and the orbiting outputs.

A method for measuring the activity of one or more excitable cells, such as neurons, in a target tissue is provided. The present method may include measuring the activity of individual, selected excitable cells by projecting one or more three dimensional (3D) multi-focal laser light patterns into a target tissue containing excitable cells adapted to emit cellular electrical activitysensitive fluorescence, to generate a multiplexed 2D diffraction pattern of fluorescence emitted by the neurons, and resolving the multiplexed 2D diffraction pattern. Also provided herein is a system configured to perform the present method, the system including a microscope configured to project one or more 3D multi-focal laser light patterns into a target tissue using a spatial light modulator and a mirror galvanometer, and a microlens array and an image detector to record individual and multiplexed 2D diffraction patterns of light emitted from the target tissue.

Devices, kits, systems and methods are described herein for treatment to skin, including but not limited to wound healing, the treatment, amelioration, and/or prevention of scars or keloids. Certain devices kits, systems and methods are used to select treatment parameters, devices or methods for treating skin in a location, zone, or region of skin having particular mechanical or other properties.

A method for mapping shear wave velocity in biological tissues includes using an ultrasound transducer to generate mechanical excitations at a plurality of locations in a region of interest. An MRI system is used to capture a phase image of each mechanical excitation, wherein motion encoding gradients (MEGs) of the MRI system encode a propagating shear wavefront caused by the mechanical excitation. A plurality of shear wave velocity maps is generated based on the phase images, wherein each shear wave velocity map depicts velocity between adjacent propagating shear wavefronts. The shear wave speed values are combined to generate a composite shear wave velocity map of the region of interest.

Sleep monitoring and stimulation comprises collecting actigraphy data from a user. The user's sleep phase is determined using the actigraphy data. At least one stimulation, determined at least in part on the sleep phase, is directed towards the user. Subsequent actigraphy data is collected from the user. The actigraphy data and subsequent actigraphy data is used to determine the user's subsequent sleep phase. The stimulation is modified, based at least in part upon the subsequent sleep phase.

The invention relates to a method of determining the laxity of a joint (9, 15) of a human (5) or an animal. The method comprises providing at least one patient-specific geometrical model (1) of at least one bone and/or at least one prosthesis comprised by the joint. Known loads are applied to the joint or to a part of the body connected to the joint, and a series of actual images (16) of the joint are obtained while the loads are applied. Then the at least one patient-specific geometrical model (1) is registered onto the actual images (16). Based thereon relative displacement and/or rotation of the at least one bone and/or at least one prosthesis is calculated as a function of the applied loads, and based thereon a measure of the laxity of the joint is determined. The invention further relates to a system for performing such a method and to a computer readable medium for performing such a method.

A garment assembly includes a sleeve member having outer and inner surfaces, a first vibration assembly associated with the sleeve member, and a control module associated with the sleeve member. The first vibration assembly includes a plurality of vibration motors that are arranged in a circle about a center point. An angular distance between each vibration motor of the plurality of vibration motors is approximately the same. The control module includes a battery, and the first vibration assembly is in electrical communication with the control module.

A 3D spring array device includes: a fixed body having an internal space therein; a moving body positioned in a center of an x-y-z orthogonal coordinate system in the internal space, wherein the moving body is configured to be fastenable to the end effector of the mechanical impedance estimating robot; and a first spring, a second spring, a third spring, a fourth spring, a fifth spring, a sixth spring, a seventh spring, and an eighth spring and configured to connect the fixed body to the moving body in the internal space.

A device can detect and retrieve a blood clot by advancing a catheter with a clot sensing element through a patient vascular. The catheter can map, using an electromagnetic sensor disposed at a distal end of the clot sensing element, the patient vascular. A force sensor can generate a position signal indicating the clot sensing element contacted the clot in the patient vascular. Once located, a blood clot retrieval device can be deployed through the catheter and a lumen in the clot sensing element to remove the clot from the patient vascular

The present disclosure pertains to systems and methods for directly and/or indirectly eliciting sensations utilizing electromagnetic radiation. In some embodiments, systems and methods for stimulation of excitable tissues using wavelengths of electromagnetic spectrum for inducing perceived cutaneous sensations are described. The systems and methods described enhance stimulation of the tissue. Utilizing these system and methods allows for increased control.