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diaphragmatic pacemaker
A diaphragmatic pacemaker, in medicine, is a surgically implanted device used to help patients breathe following complications from spinal cord injuries. The device works through pacing of the diaphragm. This product is similar to Avery Biomedical Devices' product known as a Breathing Pacemaker or a Phrenic Nerve Stimulator. The Avery Breathing Pacemaker has full FDA and pre-market approval while the Diaphragmatic pacemaker is still in its FDA trial period.
==Mechanism==
In patients with a diaphragmatic pacemaker, their breathing is helped by setting the respiratory rate by electrical stimulation (pacing) of the phrenic nerve. The pacing is accomplished via electrodes surgically implanted into the diaphragm, which is controlled by the phrenic nerve. This is different from the Breathing Pacemaker from Avery Biomedical Devices, which uses a one hundred percent implanted receiver/electrode rather than one with percutaneous wires. The percutaneous wires of the Diaphragmatic Pacemaker present chronic infection risk and a potentially hazardous electrical conduction path.
Diaphragm pacing stimulates a normal breath response as follows: when an electric current is passed through the electrodes, the diaphragm contracts, expanding the chest cavity, causing air to be sucked into the lungs (inspiration). When the nerve is not stimulated, the diaphragm relaxes and air moves out of the lungs (expiration)
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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