Cosman E R, Zervas N T, Chapman P H, Cosman B J, Arnold M A
Surg Neurol. 1979 Apr;11(4):287-94.
A fully implantable telemetric differential pressure sensor has been developed which is incorporated with a shunt valve system. It is a unique single diaphragm device that allows in vivo confirmation of zero-point and pressure calibrations. The telemetry is implemented by a resonant circuit in the sensor and a radio frequency detector outside the body, and the in vivo pressure calibration is derived from a pressure-balancing method. The pressure sensor has been implanted with shunts in several patients, and is shown to be valuable both for measurements of intraventricular pressure and for determining proper function of hydrocephalus shunt valves and catheters.
一种完全可植入的遥测差压传感器已被开发出来，它与分流阀系统相结合。这是一种独特的单隔膜装置，可在体内进行零点和压力校准的确认。遥测通过传感器中的谐振电路和体外的射频探测器来实现，体内压力校准则源自压力平衡方法。该压力传感器已在几名患者体内与分流装置一起植入，并且已证明它对于测量脑室内压力以及确定脑积水分流阀和导管的正常功能都很有价值。
