Abstract: This impeller-free vacuum cleaner is based on a rotary piston. Vacuum suction of 300 inches of water or better can be delivered. Quietness of below 70 db can be delivered. Tongued rotary piston assemblies may be strategically placed, such as stacked, to eliminate vacuum suction dead zones. Sealing problems that otherwise were encountered with previous reciprocating and rotary piston structures for vacuum cleaners are solved by using a tongued rotary piston with a double-notched rotary valve operating by a Geneva mechanism, and a novel pancake-shaped cylindrical structure to house the rotary piston. An inventive rotary combustion engine also is disclosed.

Abstract: Acoustical-based methods that increase tissue oxygenation, and equipment for carrying out the methods, are provided. The methods involve exposing tissue to low frequency sound in order to increase blood flow in the tissue, and hence oxygenation of the tissue. The methods may be used to treat or prevent disorders related to ischemia and low blood flow, such as shock, stroke and congestive heart failure.

Abstract: A method and apparatus for measuring acoustic energy applied to the head to detect increases in intracranial pressure. Acoustic eye patches are applied to a patient's eye or eyelid, and an ultrasonic sweep generator applies an acoustic signal across the patient's skull, the signal being swept across a predetermined range. The eye patches have piezoelectric film sensors for measuring the acoustic signal. In one embodiment the predetermined range is in the ultrasonic band and an analyzer determines from the output of the sensors a resonant frequency and a damping of acoustic amplitude at said resonant frequency, there being a correlation between said damping and intra cranial pressure. In another embodiment the predetermined range includes a range less than 20 kHz and the analyzer determines retinal artery pulsations, with pressure being applied to the eye until the pulsations disappear, such pressure being a measure of intra cranial pressure.

Abstract: Disclosed herein is a light source device for fluorescence diagnosis and photodynamic therapy comprising: a plurality of light source means having a wavelength range different from each other and providing selected light; a light path coupling means coupling light emitted from the light source means to the incident direction of a light guide; a filtering means selectively transmitting the emitted light based on the wavelength; and a switching device that is directed to an opening/closing means, established at a long distance to be controlled by a remote control device and selecting the kinds of light sources of the light source means to change the modes of the light. Accordingly, the device simplifies the configuration by excluding elements causing errors in the process of fluorescence diagnosis in the diagnostic region.

Abstract: A connection adapter has electrical contacts for connection to a corresponding mating contact of a terminal. The mating contacts are received in terminal domes formed from an insulating material which is configured such that the mating contacts are accessible to a contact of the connection adapter through a contact guide opening in a terminal dome. Connection adapter guides in the terminal domes are configured to interact with terminal guides to guide the connection adapter from a placement position, where it is placed onto the terminal in the correct position where the connection adapter and terminal can be fitted together, to detent position, where the connection adapter is placed and held on the terminal so that the electrical contacts of the connection adapter and the mating contacts of the terminal can be moved relative to each other to establish electrical contact.