| 摘要 |
An electromagnetic generator uses a piston 20 that moves in response to pressure received via a conduit 10 from a pressure bladder 8 located within a patient's body to take advantage of pressure fluctuations within the body, such as from the cardiovascular system. Preferably the piston comprises a magnet 20 linearly reciprocating within a fixed coil 22 in response to pulsing blood pressure. The pressure may be applied to the bladder 8 via either a blood vessel or from insertion of the bladder inside a chamber of the heart. The generator may be incorporated within a hear stimulation device 6. The bladder and conduit may also comprise a cardiac lead carrying an electrode, such as a pacing electrode. The lead may include sensing means, possibly for blood chemistry. The pressure pulses received by the generator may also be used to derive physiological parameters, the measurements being sent to the stimulation means. |
