Abstract: A bio-pressure sensor system is disclosed, comprising a first sensor configured to provide a reference pressure measurement and second sensor configured to measure a fluid pressure within a human body. The bio-pressure sensor system also comprises a first reference element and second reference element. The first and second sensors share the first reference element. The second reference element is coupled to the first sensor and configured to provide a reference pressure. The first and second sensors each comprise independent output signals.

Abstract: A medical device insertion system, and a method of using the system, to mate trocars inside a patient during a medical procedure, the system including a first trocar having a first end to insert into a patient, and a second end at which a first user control is provided, and a second trocar having a first end to insert into a patient, and a second end at which a second user control is provided, wherein the respective first ends of the first and second trocars are formed so as to mate to one another inside the patient to form a continuous path between the respective second ends.

Abstract: An implantable subcutaneous device to measure internal body pressure and wirelessly transmit information corresponding to the measured internal body pressure, including a pressure sensor to sense pressure of a particular region of a body of a patient and output a pressure signal corresponding to the sensed pressure, an encoder to receive the pressure signal and encode a signal to produce a sensor information signal to be transmitted to an ex vivo receiver, a transceiver to receive the sensor information signal from the encoder and transmit the sensor information signal to the ex vivo receiver, and a biocompatible housing in which to enclose the pressure sensor, encoder, and transceiver.

Abstract: A gravitational pressure regulating valve to regulate fluid flow of a patient, including a fluid chamber having an inlet port to receive a bodily fluid and an outlet port to discharge received bodily fluid, the fluid chamber including a first chamber configured to capture a non-buoyant member therein and to guide the non-buoyant member along a longitudinal axis of the first chamber to facilitate bi-directional reciprocating movement of the non-buoyant member to and from the inlet port, and a second chamber configured to capture one or more buoyant members therein such that when the second chamber is filled with bodily fluid, at least one of the buoyant members applies a resolved buoyant pressure from a buoyant force of the one or more buoyant members in opposition to an inlet pressure of fluid at the inlet port.

Abstract: A medical device tunneling system, and a method of using the same, to subcutaneously route trocars, also commonly referred to as tunnelers, or introducers, having a cannula, stylet, and a guidewire stylet, inside a patient during a surgical procedure, such as a ventriculoperitoneal hydrocephalus shunt implantation, from a proximal entry point to a distal end point, in order to subcutaneously route and implant a medical device, such as shunt tubing, in a patient.