公开(公告)号：US4564018A

公开(公告)日：1986-01-14

申请号：US437487

申请日：1982-10-28

申请人： Stephen Hutchison ,  J. Alan Ritter ,  Mark Virkus

发明人： Stephen Hutchison ,  J. Alan Ritter ,  Mark Virkus

IPC分类号： G01N29/44 ,  A61B3/10 ,  A61B8/00 ,  A61B8/10 ,  A61B10/00

CPC分类号： A61B8/10

摘要： An ultrasonic diagnostic scanner for obtaining ocular measurements is described. The ultrasonic diagnostic scanner generally comprises transmitter means for generating an ultrasonic signal, receiver means for receiving echo signals and for producing a peak signal at substantially the maximum amplitude of the echo signals when the echo signals exceed a predeterminable threshold level, programmable means for producing count signals indicative of the times between the transmission of the ultrasonic signal and the occurrence of a selected number of peak signals, and between the occurrence of predetermined peak signals, microcomputer means for controlling the transmitter and programmable means, and output means for generating a perceptible output indicative of the ocular parameter being measured. The ultrasonic diagnostic scanner also includes sensitivity adjustment means for maintaining a predetermined amplitude level of at least one of the echo signals under the control of the microcomputer means. Threshold adjustment means is also provided for adjusting the predeterminable threshold level under the control of the microcomputer means. A dot matrix liquid crystal display is also included for visually displaying an echo histogram of the echo signals.

摘要翻译： 描述了用于获得眼睛测量的超声波诊断扫描仪。 超声波诊断扫描器通常包括用于产生超声波信号的发射机装置，用于接收回波信号的接收机装置，以及当回波信号超过可预定的阈值电平时在回波信号的基本上最大振幅下产生峰值信号，用于产生计数的可编程装置 指示超声波信号的发送与所选择的峰值信号的发生之间以及预定峰值信号的发生之间的时间的信号，用于控制发送器的微型计算机装置和可编程装置，以及用于产生可察觉的输出的输出装置 指示正在测量的眼睛参数。 超声波诊断扫描仪还包括灵敏度调节装置，用于在微计算机装置的控制下保持至少一个回波信号的预定幅度电平。 还提供阈值调整装置，用于在微型计算机装置的控制下调整可预定的阈值电平。 还包括点阵液晶显示器，用于可视地显示回波信号的回波直方图。