Abstract: An ultrasound transducer for use with an ultrasound brain lesioning system includes an acoustic focusing lens, a piezoelectric transducer plate disposed in spaced relation with the focusing lens, an acoustic coupling medium disposed between the focusing lens and the transducer, and a pressurized fluid contacting the rear surface of the transducer to maintain a spaced relation between the transducer plate and the back surface of the lens. An electrical excitation signal is supplied to the transducer to promote production of an ultrasonic signal by the transducer.

Abstract: A transducer assembly for visualization and treatment of transcutaneous and intraoperative sites includes in combination a visualization transducer and a treatment transducer, each of which are movable with both linear and rotary degrees of freedom. Movement of each transducer is by various motor and geared drive arrangements wherein certain degrees of freedom for one transducer are separate and independent from the degrees of freedom for the other transducer. At least one degree of freedom for each transducer is common and the transducers are moved concurrently.One arrangement of the transducer combination is for prostate treatment and includes a specific shape and configuration for anatomical considerations and a control unit which is operable external to the patient to control both transducers and a reflective scanner which are inserted into the patient as part of the ultrasound probe.

Abstract: A transducer assembly for visualization and treatment of transcutaneous and intraoperative sites includes in combination a visualization transducer and a treatment transducer, each of which are movable with both linear and rotary degrees of freedom. Movement of each transducer is by various motor and geared drive arrangements wherein certain degrees of freedom for one transducer are separate and independent from the degrees of freedom for the other transducer. At least one degree of freedom for each transducer is common and the transducers are moved concurrently.One arrangement of the transducer combination is for prostate treatment and includes a specific shape and configuration for anatomical considerations and a control unit which is operable external to the patient to control both transducers and a reflective scanner which are inserted into the patient as part of the ultrasound probe.

Abstract: An ultrasound brain lesioning system with ultrasound, CT or MRI site localization includes a skull fixation apparatus, a position data translating fixture and a computer-controlled ultrasound transducer. The skull fixation apparatus is utilized in combination with ultrasound, CT or MRI scan transparencies and with a digitizing tablet in order to transfer transparency data both as to skull fixation benchmarks and tumor locations into a computer. The transducer is cooperatively arranged with the translating system such that the benchmarks of the skull fixation apparatus are utilized to derive X, Y and Z linear coordinates and two rotary coordinates which are at right angles to one another which are also input into the computer such that the computer is then capable of automatically driving the transducer and positioning it at the appropriate location for producing volume lesions in the brain at the site of the identified brain tumors or other selected tissues.

Abstract: A hand-held portable ultrasonic scanning probe for use with energizing and receiving means for imaging sections of a body includes a fluid-filled enclosure coupled to a handle portion which houses a DC drive motor. The output shaft of the drive motor is directly coupled to a level wind drive screw. A holder assembly incorporating a pawl which coacts with the drive screw and a plano-concave transducer moves back and forth across the drive screw as a result of the DC motor output shaft rotation. The linear travel of the transducer creates a linear scan thereby eliminating the diagnostic imaging problems of sector scans.

Abstract: A transducer assembly for visualization and treatment of transcutaneous and intraoperative sites includes in combination a visualization transducer and a treatment transducer, each of which are movable with both linear and rotary degrees of freedom. Movement of each transducer is by various motor and geared drive arrangements wherein certain degrees of freedom for one transducer are separate and independent from the degrees of freedom for the other transducer. At least one degree of freedom for each transducer is common and the transducers are moved concurrently.One arrangement of the transducer combination is for prostate treatment and includes a specific shape and configuration for anatomical considerations and a control unit which is operable external to the patient to control both transducers and a reflective scanner which are inserted into the patient as part of the ultrasound probe.

Abstract: A portable computer based motor vehicle performance monitoring system which performs vehicle characteristic measurements and calculations. The system uses a distance sensor means, a fuel volume flow sensor means, and a fuel temperature sensor means for sensing various vehicle performance characteristics. The system has a computer controlled start/stop feature. It also has a user-prompting programming feature. It also has a combined liquid fuel volume and mass meter which uses a mathematical algorithm which converts volume data to mass data using a temperature sensitive function.

Abstract: A portable computer based motor vehicle performance monitoring system which performs vehicle characteristic measurements and calculations. The system uses a distance sensor means, a fuel volume flow sensor means, and a fuel temperature sensor means for sensing various vehicle performance characteristics. The system has a computer controlled start/stop feature. It also has a user-prompting programming feature. It also has a combined liquid fuel volume and mass meter which uses a mathematical algorithm which converts volume data to mass data using a temperature sensitive function.

Abstract: A remote, manual shift system cooperating with the clutch, throttle and gear shift stick of a manual transmission vehicle for use during engine testing includes a series of five sensors, one each for vehicle speed, throttle position, clutch position, X-axis gear shift position and Y-axis gear shift position. These five sensors are operable to record and compile actual drive test data reflecting the actual operation of the vehicle during the test drive. This data is recorded and the recording is then processed by an electronics circuit which in turn provides actuating signals of a DC voltage level to a series of servos which are arranged in mechanical combination with the clutch, throttle and gear shift stick of the vehicle under test. As these various servos are actuated with an appropriate input signal, they perform the shifting from one gear to the next gear along with proper depression of the clutch and acceleration by means of the throttle.