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6107results about "Material analysis using sonic/ultrasonic/infrasonic waves" patented technology

Gas main robotic inspection system

The present invention provides a long-range, untethered, live, in-pipe inspection system that includes a self-propelled train having a plurality of modules; joint members for interconnecting adjacent modules, data collection components, and wireless communication components for transmitting collected data and receiving control messages. The module-train includes, generally, at least one, and preferably two drive modules, at least one power module and an electronics module. The train may additionally include at least one support module, which may be interposed between the power and electronics modules. In one embodiment of the invention, there are two drive modules, one at each terminal end of the train, two power modules, one adjacent to each drive module, two support modules, one adjacent to each power module, and one central electronics and computing module.
Owner:CARNEGIE MELLON UNIV

Ophthalmic ultrasound probe assembly

An ultrasonic probe assembly comprises a housing defining a longitudinal axis and having a linear motor assembly, a swivel base, and an extension arm disposed therewithin. An imaging transducer is mounted on a free end of the extension arm and is specifically adapted to be moved along an arcuate path as a result of mechanical interconnection of the swivel base to the linear motor assembly. The swivel base upon which the extension arm is mounted is configured to be pivotable about a pivot axis oriented transversely relative to the longitudinal axis such that reciprocative motion of the linear motor assembly is converted in swiveling motion of the swivel base and oscillating translation of the transducer along an arcuate path such that the transducer axis is oriented generally perpendicularly relative to an anatomical structure having a convexly shaped outer surface.
Owner:CAPISTRANO LABS

Method and system for non-invasive determination of blood-related parameters

A method and system for measuring time variations of a response of a blood perfused fleshy medium to an external electromagnetic field is provided. The response of the medium to the external electromagnetic field can be a photo-acoustic signal, obtained in response to the exciting light, and / or impedance of the medium, in response to the applied ac electromagnetic field. Measurements of the time variations of the response of the medium are carried out when the condition of artificial kinetics is created and maintained over a certain time period by applying primary over-systolic pressure to a certain location at the medium with normal blood flow, so as to achieve a state of temporary blood flow cessation at the medium downstream of the certain location. When required, the control of the condition of the artificial kinetics can be further achieved by applying a perturbation of secondary pressure to the fleshy medium.
Owner:ORSENSE LTD

Wide or multiple frequency band ultrasound transducer and transducer arrays

Ultrasound bulk wave transducers and bulk wave transducer arrays for wide band or multi frequency band operation, in which the bulk wave is radiated from a front surface and the transducer is mounted on a backing material with sufficiently high absorption that reflected waves in the backing material can be neglected. The transducer is formed of layers that include a high impedance section comprised of at least one piezoelectric layer covered with electrodes to form an electric port, and at least one additional elastic layer, with all of the layers of the high impedance section having substantially the same characteristic impedance to yield negligible reflection between the layers. The transducer further includes a load matching section comprised of a set of elastic layers for impedance matching between the high impedance section and the load material and, optionally, impedance matching layers between the high impedance section and the backing material for shaping the transducer frequency response. For multiband operation, the high impedance section includes multiple piezoelectric layers covered with electrodes to form multiple electric ports that can further be combined by electric parallel, anti-parallel, serial, or anti-serial galvanic coupling to form electric ports with selected frequency transfer functions. Each electric port may be separately transceiver-connected to obtain parallel, anti-parallel, serial or anti-serial port coupling for multi-band transmission, and extremely wide-band reception.
Owner:ANGELSEN BJORN A J +1
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