Surgery – Truss – Pad
Patent
1995-06-19
1997-08-12
Jaworski, Francis
Surgery
Truss
Pad
29 2535, A61B 800, H01L 4122
Patent
active
056555385
ABSTRACT:
The present invention discloses an ultrasonic phased array transducer with an ultralow backfill and a method for making. The ultrasonic phased array includes a low density backfill material having an ultralow acoustic impedance. The backfill material is either an aerogel, a carbon aerogel, an xerogel, or a carbon xerogel. A piezoelectric ceramic material and two matching layers are bonded to the backfill material. In one embodiment, a plurality of interconnect vias are formed in the backfill material with conducting material deposited in the vias. A portion of the bonded matching layers, the piezoelectric ceramic material, and the backfill material have isolation cuts therethrough to form an array of electrically and acoustically isolated individual elements. In a second embodiment, the backfill material is bonded to an electronic layer at a face opposite to the piezoelectric ceramic material and the matching layers. Then isolation cuts are made through the matching layers, the piezoelectric ceramic material, and the backfill material, to form an array of electrically and acoustically isolated individual elements.
REFERENCES:
patent: 4442715 (1984-04-01), Brisken et al.
patent: 4528652 (1985-07-01), Horner et al.
patent: 4734963 (1988-04-01), Ishiyama
patent: 4779244 (1988-10-01), Horner et al.
patent: 5039774 (1991-08-01), Shikinami et al.
patent: 5311095 (1994-05-01), Smith et al.
"Two-Dimensional Array Tranducers Using Hybrid Transducers Using Hybrid Connection Technology", by S. Smith, et al, Dept. of Biomedical Engineering, Duke University, Durham, NC 27706 (4 pages).
"Modified SiO2 Aerogels as Acoustic Impedance Matching Layers In Ultrasonic Devices" by R. Gerlach, et al, Journal of Non-Crystalline Solids 145, pp. 227-232.
"Elastic Nonlineartity of Aerogels" by J. Gross, et al, Physical Review B, vol. 45, No. 22, 1 Jun. 1992-II, pp. 12774-12777.
"Matrix Array Transducer and Flexible Matrix Array Transducer" by T. Kojima, 1986 Ultrasonics Symposium, pp. 649-654.
"Hybrid Linear and Matrix Acoustic Arrays" by M. Pappalardo, Ultrasonics, Mar. 1981, pp. 81-86.
"Two Dimensional Arrays for Medical Ultrasound" by S. Smith, et al, Ultrasonic Imaging 14, pp. 214-233, 1992.
Lorraine Peter William
Smith Lowell Scott
General Electric Company
Goldman David C.
Jaworski Francis
Snyder Marvin
LandOfFree
Ultrasonic phased array transducer with an ultralow impedance ba does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ultrasonic phased array transducer with an ultralow impedance ba, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultrasonic phased array transducer with an ultralow impedance ba will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-154231