| 摘要 |
<p>A device measures pressures in animals and humans and includes a pressure transmission catheter (22) filled with a pressure transmitting medium (26) and implantable in an area having a physiological pressure. A transducer (30) communicates with the pressure transmitting medium (26) to provide a pressure signal representing variations in the physiologic pressure on electrical wires (34). A connecting catheter (36) carries the electrical wires (34) to signal processing and telemetry circuitry (38), which transmits a telemetry signal representing the pressure signal to a receiver external to the animal or human. A housing (44) holds the signal processing and telemetry circuitry (38), but the transducer (30) is remote from the housing (44). The device performs measuring of venous pressure, pulmonary pressure, bladder pressure, or intracranial pressure without significant head pressure artifact and with a sufficient dynamic response. One embodiment of the catheter (22) includes a multi-durometer stem.</p> |
