摘要:
The invention is directed toward a magnetic valve reader used as an indicator tool. The magnetic valve reader determines a location and an orientation for a magnetic indicator device to indicate a device setting of an implantable medical device. The implantable medical device includes the magnetic indicator device coupled to a valve on the implantable medical device. External magnetic fields, specifically the Earth's magnetic field, may interfere with the compass and create an incorrect device setting indication. The electronic reader estimates the external magnetic fields to subtract the estimate from received data to minimize any influence that external magnetic field has on the accuracy of the device setting measurement.
摘要:
The invention is directed toward a magnetic indicator tool used to determine the setting of an implantable medical device. The implantable medical device includes a magnetic indicator device coupled to a valve on the implantable medical device. External magnetic fields, specifically earth's magnetic field, may interfere with a conventional compass and create an incorrect device setting indication. The magnetic indicator tool estimates the external magnetic fields to subtract the estimate from received data to minimize any influence that external magnetic field has on the accuracy of the device setting measurement.
摘要:
An implantable shunt that includes one or more catheters configured so that the implantable shunt has a resistance to flow greater than about 3 mm Hg/mL/minute. An implantable shunt system that includes one or more catheters and a fluid control device that utilizes the properties of the catheters to improve the expected function of the shunt by providing a higher or lower resistance to the flow through the shunt and reduces the effect of pulsations of cerebrospinal fluid on the shunt system.
摘要翻译:一种可植入分流器,其包括一个或多个导管,其构造成使得可植入分路具有大于约3mmHg / mL /分钟的流动阻力。 一种包括一个或多个导管和流体控制装置的可植入分流系统,其利用导管的特性来改善分流器的预期功能,通过对通过分流器的流动提供更高或更低的阻力,并降低对脉动的影响 分流系统上的脑脊液。
摘要:
The disclosure is directed to an implantable device for sensing CSF flow through an implantable ventricular shunt. The sensing device is implanted with the CSF shunt, and includes a flow sensor to sense flow rate or shunt blockage. The sensing device is either placed within or adjacent to the fluid path through the shunt. The sensing device transmits the sensed flow rate to an external monitoring device by wireless telemetry. The sensing device may be integrally formed as part of the shunt, or clamped onto a portion of the shunt, in which case the sensing device may be resusable. An external monitor receives the transmitted flow signal and presents information based on the flow signal. The sensing device may be inductively powered or include its own power supply.