Abstract: A sensor attaching device and a method for monitoring physiological pressure and other physiological parameters by application of an external pressure sensor to the surface of the brain is disclosed. The cranial sensor attaching device consists of a series of concentric cylinders, two of which have flanged ends configured in such manner that the flanged end of the outer cylinder expands radially when the flanged end of the inner cylinder is withdrawn through it. This feature prevents the device, once inserted through a hole in the skull, from being withdrawn. The flange on the outer cylinder is configured so that when inserted and expanded it contacts the inner lip (table) of the skull at three equidistant points around the circumference of the hole, thus assuring that the tip of the sensor is positioned tangential to the surface of the brain.

Abstract: A prosthetic vertebral body for use in a cavity left by the removal of a defective vertebral body located between two adjoining healthy vertebral bodies is disclosed. A method of replacing the defective vertebral body with the disclosed prosthetic vertebral body is also disclosed. The prosthetic vertebral body includes an adjustable support device which is located within the cavity between the two adjoining vertebral bodies for supporting and adjusting the axial spacing of the adjoining vertebral bodies. A castable material is poured into the cavity and hardens so that the adjustable support device is embedded therein. An attaching device is also provided for rigidly attaching the spinous process of the defective vertebral body to the spinous processes of the adjoining vertebral bodies. Preferably, the adjustable support device includes a pair of elongate struts whose longitudinal dimensions are adjustable.

Abstract: An arterial pressure control system comprises an inflatable cuff for encircling the artery and a fluid pump connected to inflate the cuff. The outlet pressure of the pump is controlled by a programmable controller which receives a feedback signal from a pressure sensor contacting the artery downsteam from the cuff. The output of the pressure sensor is compared with a reference value so that the feedback signal to the controller represents the difference between the actual arterial pressure and the desired pressure. The controller thereupon regulates the output pressure of the pump so as to inflate or deflate the cuff as needed to maintain the desired arterial pressure.

Abstract: Apparatus for use in moving a disabled human limb has a cuff arrangeable on a disabled limb, and a handle assembly attached to the cuff and engageable by an able limb of the user for permitting the able limb to manipulate the disabled limb.