Results 211 to 220 of about 47,435 (267)
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A Novel Ultrasonic Thermotherapy Instrument
2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2007An structure is proposed for fabricating a portable prototype apparatus, using the embedded control technique based on ARM core, which has a simple structure and small size. The hardware is easily updated and maintained due to its modular structure, the software has a visualized interface and hierarchical design mode, so the apparatus has a good ...
Zi, Zhang, Ting-lei, Huang
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Ultrasonic measuring instrument
The Journal of the Acoustical Society of America, 1983By detecting the instant of a selected zero-crossing of a received ultrasonic signal rather than relying on the instant the amplitude of that received signal exceeds a predetermined reference amplitude in excess of zero, a transit-time measuring instrument can be realized which is free from the measurement errors normally arising from acoustic signal ...
Masaru Kohno +3 more
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An Ultrasonic Instrument for Osteoporosis Detecting
2014With the aging population increasing, the Osteoporosis (OP) in aging people is rising, and it has an important significance to take the prevention and treatment of osteoporosis as a way to improve the health quality of the elderly. The research presents an osteoporosis calcaneus bone test device, which designs two ultrasonic probes for test the bone ...
Hongfu Zhou +5 more
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Modification of an Ultrasonic Dental Instrument
Journal of Periodontology-Periodontics, 1969SUMMARY The rationale and technique for re-designing a popu lar periodontal instrument has been presented. The pro cedure is simple and insures minimal tissue damage.
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Nonsurgical ultrasonic endodontic instruments
Dental Clinics of North America, 2004The advent of nonsurgical ultrasonic tips has opened up a new horizon in endodontic treatment. There are a number of nonsurgical endodontic ultrasonic systems currently available in the market and it is difficult to renew all of them. Based on similarities among different instrument systems, and attempt has been made to classify instruments into broad ...
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Instrument for ultrasonic lithotripsy
The Journal of the Acoustical Society of America, 1989An instrument for ultrasonics lithotripsy comprises a probe which is applied to the stone which is to be disintegrated, which may be placed in oscillation by means of a piezo-electric sound transducer which is assembled from ceramic discs. The transducer is energized into oscillation by an electrical generator and the transducer oscillations are ...
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Development and application of ultrasonic surgical instruments
IEEE Transactions on Biomedical Engineering, 1997In this paper, a new approach for designing ultrasonic surgical instruments (USI) is presented. These medical instruments convert an ultrasonic signal into a mechanical vibration by utilizing a magnetostrictive method and have been found to be very useful for various medical procedures.
Dong Sun 0001 +3 more
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Cutting characteristics of ultrasonic surgical instruments
Clinical Oral Implants Research, 2011AbstractObjective: Ultrasonic surgical devices are becoming increasingly popular and work is required to understand the performance of the cutting tips. This experimental study looks to investigate the way in which ultrasonic bone cutting tools oscillate and how this oscillation is modified when contacted against bone surfaces with varying loads.
Dipesh, Parmar +3 more
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Ultrasonic endodontics: The wear of instruments with usage
Journal of Endodontics, 1986A series of stainless steel and diamond files were used to chemomechanically prepare canals. The files were examined under the scanning electron microscope when new and after up to 20 min of usage for evidence of wear or failure. Both types of files were of good quality and showed little evidence of wear and virtually no failures at any usage time ...
G L, Scott, R E, Walton
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Ultrasonic echo imaging of tissues: instrumentation
The British Journal of Radiology, 1976The ultrasonic pulse-echo principle is capable of providing detailed information, of considerable potential diagnostic value, on the structure of soft tissues in relation to pathology, but the present generation of ultrasonic scanners does not fully exploit this possibility.
C R, Hill, D A, Carpenter
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