Abstract: An intracranial catheter for measuring flow of blood through a body tissue is disclosed. Embodiments of an intracranial catheter comprise a longitudinal body adapted to be inserted into a craniospinal compartment. With embodiments the longitudinal body includes a tip element that forms a distal end of said longitudinal body and a channel extending from a proximal end of said longitudinal body to at least one opening of said tip element, and further includes a sensor configured to detect a pulsatile pressure curve. With embodiments, a pulsatile pressure curve may be analyzed via a pulse contour analysis that may be performed by a processing unit operatively coupled to said sensor. Methods for monitoring cerebral blood flow using an intracranial catheter are also disclosed.

Abstract: An apparatus and method for non-invasively determining the blood oxygen saturation within a subject's tissue by near-infrared spectroscopy is disclosed. Embodiments of the apparatus and method use the multi-distance method and take into account the attenuation of the light signal due to light absorbers other than hemoglobin and deoxyhemoglobin and the scattering properties of a subject's tissue.

Abstract: An apparatus and method for non-invasively determining the blood oxygen saturation within a subject's tissue by near-infrared spectroscopy is disclosed. Embodiments of the apparatus and method use the multi-distance method and take into account the attenuation of the light signal due to light absorbers other than hemoglobin and deoxyhemoglobin and the scattering properties of a subject's tissue.

Abstract: A catheter for measuring a flow of blood through a body tissue comprises a light emitter for emitting light into the body tissue and at least one light receiver for receiving light reflected in the body tissue and back to the catheter. The light emitter and the at least one light receiver are arranged in the catheter, wherein the catheter comprises a middle piece and a first and a second connection tube. The middle piece has a distal fastening piece for fastening to the first connection tube and a proximal fastening piece for fastening to the second connection tube, wherein the light emitter and the at least one light receiver are arranged in the middle piece.

Abstract: An assistive mobility device is provided that includes an automatic positive locking system, which permits an operator to move the assistive mobility device when an actuator is engaged and automatically lock the assistive mobility device when the actuator is disengaged. The assistive mobility device includes a braking system, stowable footrest and armrests, and an adjustable back, which all require the single-handed operation of the operator to function. The collapsible footrest is stowed under the seat permitting an occupant optimal entry into or exit from the assistive mobility device. The assistive mobility device can be formed from non-corrosive materials, including stainless steel, composite fibers, nylon, and plastics, for use in aquatic environments.