发明名称 |
Ultrasonic generator for medical use e.g. echography - includes signal generator and variable modulator feeding signal to small transducer for localised treatment |
摘要 |
<p>The ultrasonic appts. includes a 28 kHz sine wave signal generator whose output is applied to the input of a modulator (11). A modulation clock circuit (12) is connected to a number of switched networks (13-17) comprising resistor (131) and switches (132) in series. The switched networks may be used to control the frequency of the clock circuit. The clock circuit output is fed to a programmable divider (18). The divider is controlled by a second set of switched circuits (179-185) to give division factors from 180 to 12. The divider output is connected via a switch (110) to the modulator, to modulate the ultrasonic signal. The modulated signal is fed via a power amplifier (19) to an ultrasonic transducer which is used to apply the signal to a small area on the patient's body.</p> |
申请公布号 |
FR2445152(A1) |
申请公布日期 |
1980.07.25 |
申请号 |
FR19780036450 |
申请日期 |
1978.12.27 |
申请人 |
SKOVAJSA JOSEPH |
发明人 |
|
分类号 |
A61C17/20;A61H23/02;A61H39/00;(IPC1-7):61N5/00 |
主分类号 |
A61C17/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|