A monitoring system includes an implantable intra-vascular support device for positioning against a vessel wall and an implantable sensor-actuator mounted to the support device. The sensor-actuator is drivable between a non-deployed position in which it is against the support device and a deployed position in which it is displaced away from the support device. Sensor signals are generated when in the deployed position. This system is able to monitor flow away from the edge of a vessel by deploying the sensor-actuator towards the center of the vessel. When flow monitoring does not need to take place, it can be non-deployed so that it does not present an occlusion to the flow.

Articles of manufacture, including an apparatus for detecting a hemodynamic disorder, are provided. A method may include receiving a blood pressure, including an aortic pressure and a distal coronary pressure, over a plurality of heartbeats. The method also includes determining a complement of a ratio of the distal coronary pressure to the aortic pressure for each heartbeat of the plurality of heartbeats. The method also includes determining, based on the complement of the ratio, a maximum complement of the ratio and a minimum complement of the ratio. The method also includes determining, based on the maximum complement and the minimum complement, a pressure-derived coronary flow reserve. The pressure-derived coronary flow reserve includes a ratio of the maximum complement to the minimum complement. The method also includes detecting, based on the pressure-derived coronary flow reserve, a hemodynamic disorder.

The invention relates to a transponder system having at least one passive transponder, which has a resonant circuit having a variable resonant frequency, and having a readout device, wherein the readout device is designed to modify a frequency of the readout signal to the variable resonant frequency of the resonant circuit. The invention additionally relates to a method for readout of a passive transponder, which has a resonant circuit having a variable resonant frequency.

Devices, methods and systems for transmitting signals through a device located in a blood vessel of an animal, for stimulating and/or sensing activity of media proximal to the device, wherein the media includes tissue and/or fluid.

Some implementations of an endovascular device include a stent graft with an expandable tubular metallic frame and a covering material disposed on at least a portion of the metallic frame. The stent graft defines a lumen therethrough. In a particular embodiment, a first balloon is disposed around an outer periphery of the stent graft, a second balloon is disposed around the outer periphery of the stent graft and spaced apart from the first balloon, and a third balloon is disposed within the stent graft lumen between the first balloon and the second balloon. The third balloon can be inflated to fully or partially occlude the lumen. The first and second balloons can be individually inflated to fully or partially shunt blood flow from a blood vessel through the stent graft. In some embodiments, sensors and an automated control unit are included to automate the operations of the endovascular device.

A flexible, passive pressure sensor includes three LC tank circuits. The first LC tank circuit is a pressure sensing LC tank circuit, having a capacitance that varies in response to changes in environmental pressure. The second and third LC tank circuits are reference LC tank circuits, having capacitances that are relatively constant over changes in environmental pressure. A measurement tool measures the resonant frequencies of the three LC tank circuits and then computes a pressure measurement that accounts for changes in resonant frequencies in the LC tank circuits due to environmental effects and deforming.

The present invention relates to an implantable apparatus for obtaining urinary control and emptying of the urinary bladder. The apparatus operates with a powered member operating from the outside of the urinary bladder assisted by a support structure to discharge urine from the urinary bladder. A control device controls the operation of the powered member. The control device further comprises a source of energy for operating the powered member and other energy consuming parts of the apparatus and a control assembly.

Wireless, variable inductance and resonant circuit-based vascular monitoring devices, systems, methodologies, and techniques are disclosed that can be used to assist healthcare professionals in predicting, preventing, and diagnosing various heart-related and other health conditions.

Encapsulation packages for stent-deployable monitoring devices formed of resonator sensors and allowing for magnetic biasing elements that exhibit a targeted impact on the mechanical characteristics of a stent are provided. Encapsulation packages are formed of different types and include a longitudinal shield and curved end on profile for aligning the shield within the deployable stent, the shield having perforations such that a resonator can be positioned adjacent the perforations for allowing particulate within the stent to collect and be measured by the resonator during deployment.

A method of making a universal implantable integrated circuit medical device platform having integral and monolithic circuit traces. The platform allows for implanting into a mammalian body single and multi-functional interface devices for sensing, monitoring stimulating and/or modulating physiological conditions within the body. Microelectronic circuitry may be integrated onto the platform or may be joined as modular components to the platform.