Devices using ultrasounds for forming images, in particular for _the internal examination of the human body
Patent 4204435 Issued on May 27, 1980. Estimated Expiration Date: 
April 27, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 27, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3269173 3402598 3922907 InventorsApplicationNo. 05/900665 filed on 04/27/1978US Classes:73/626SwitchedExaminersPrimary: Kreitman, Stephen A.Attorney, Agent or FirmInternational ClassesA61B 8/08 (20060101)G01S 15/00 (20060101) G01S 15/89 (20060101) G10K 11/34 (20060101) G01N 29/06 (20060101) G01N 29/26 (20060101) G10K 11/32 (20060101) G10K 11/00 (20060101) Foreign Application Priority Data1977-04-29 FRAbstractThe invention relates to a probe for a device forming images from ultrasounds, in particular for the internal examination of the human body. The probe comprises transducers distributed in a curved array providing the possibility of a sectorial angular scanning and of generating ultrasonic beams converging towards a localized area where is arranged either a screen opaque to ultrasounds and formed with one or two openings in the vicinity of the center of converging area, with one or two lenses for ultrasounds in said opening or openings, either one or two electronic lenses formed with means for converting in parallel ultrasounds into electric signals, apparatus for differentially delaying the electric signals and apparatus for converting in parallel the electric signals, after a delay, into ultrasounds. | |
