A collar sized to be worn around the neck of a human subject has at least one member that defines an arc of less than 360° and greater than 180° having a diameter, a first compressor at a first end of the arc, a second compressor at a second end of the arc and a bend angle sensor. The collar is adapted to exert an inwardly-directed force on the first and second compressors when worn. The bend angle sensor is configured and positioned to detect a bend angle of the collar, wherein the bend angle correlates to the inwardly-directed force on the first and second compressors when worn.

A skull-mounted drug and pressure sensor (SOS), a smart pump (ISP) electrically coupled to the SOS and a drug delivery and communications catheter communicating the SOS with the ISP are combined for a first embodiment. A skull-mounted (SOS), a metronomic biofeedback pump (MBP) electrically coupled to the SOS and a drug delivery and communications catheter having a sending and receiving optical fiber communicating the SOS with the MBP are combined for a second embodiment. A third embodiment combines a (SOS), an implantable power and communication unit (PCU) electrically coupled to the SOS, and a drug delivery and communications catheter for communicating the SOS with the PCU and for communicating the exterior source of the drug to the SOS. A fourth embodiment combines a ventricular catheter with a CSF accessible chamber and drug delivery port; and an implantable stand-alone skull-mounted drug and pressure sensor (SPS).

Provided are conformable devices to measure subdermal fluid flow and related methods. A soft, stretchable and flexible substrate supports a thermal actuator and various specially positioned temperature sensors. A microprocessor in electronic communication with sensors calculates subdermal fluid flow from the measured upstream and downstream temperatures, as well as various application-dependent parameters. Devices and methods provided herein are particularly useful for measuring cerebral spinal fluid in a ventricular shunt placed for treatment of hydrocephalus.

The invention relates to a device for detecting a malfunctioning of a valve/catheters assembly for shunting a cerebrospinal fluid or the like, characterized in that it comprises: a chamber (6) which is placed inside the said housing; a laminar canal (4), a sensor (7) for measuring a pressure in the said chamber; a flexible membrane (5) separating the sensor from the chamber (6); control and communications electronics (8,9) able to exchange with an external reader in order to transmit a measurement by the said sensor, the sensor (7) being attached to the flexible membrane (5) with which it is in contact.

An apparatus for measuring intracranial pressure constituted of: a transmitter arranged to transmit a first acoustic signal through a first cranial point; a receiver arranged to receive a second acoustic signal from a second cranial point; and a control circuitry, wherein the control circuitry is arranged to: extract from the detected second acoustic signal a first set of frequency components associated with the transmitted first acoustic signal; extract from the detected second acoustic signal a second set of frequency components associated with intracranial processes; and determine intracranial pressure responsive to the extracted first set of frequency components and the extracted second set of frequency components.

A heart monitoring system for a person includes one or more wireless nodes; and wearable appliance in communication with the one or more wireless nodes, the appliance monitoring vital signs.

Embodiments of portable cranial anatomy injury evaluation systems, apparatus, and methods are described generally herein where the system and apparatus may include multiple signal generation devices including photonic, acoustic, and electrical signals. Other embodiments may be described and claimed.

The presence or absence of objects tagged with transponders may be determined in an environment in which medical procedures are performed via an interrogation and detection system which includes a controller and a plurality of antennas positioned along a patient support structure. The antennas may be positioned along an operating table, bed, mattress or pad, sheet, or may be positioned on a drape, or shade. Respective antennas may successively be activated to transmit interrogation signals. Multiple antennas may be monitored for responses from transponders to the interrogation signals. For example, all antennas other than the antenna that transmitted the most recent interrogation signal may be monitored. Antennas may be responsive to force, a signal indicative of such force being produced. A wireless physiological condition monitor may detect patient physiological conditions and wirelessly transmit signals indicative of such.

A biodegradable pressure sensor for measuring vital physiological pressures and for preventing the buildup of dangerous internal forces in impaired organs. The pressure sensor is constructed by depositing Mg or Mo on both sides of a PLLA film. This layered configuration (Mg/PLLA/Mg) or (Mo/PLLA/Mo) may then be encapsulated by layers of high molecular weight PLA. These materials are biodegradable such that after implantation, the sensor does not require invasive removal surgery that can damage directly interfaced tissues.

A calibration system for a pulsed phase-lock loop ultrasound measurement system comprising an apparatus having a compartment for holding a pressure sensitive liquid. The compartment has an opening by which a flow of the pressure sensitive liquid may be controlled. A sensor arranged relative to the compartment to receive ultrasonic signals that reflect off one or more inner surfaces of the compartment. The system includes a processing device for receiving an integrated error signal output by the sensor based on pressure changes of the pressure sensitive liquid responsive to a change in flow of pressure sensitive liquid between the source and the compartment.