| 摘要 |
<p>A portable analgesic device which comprises a chemical feeder for temporarily storing a predetermined amount of chemical and then discharging the chemical by itself, a first three-way connector connected to an outflow port of the chemical feeder, an intermittent chemical injecting line connected to one outlet of the first three-way connector, a continuous chemical injecting line connected to the other outlet of the first three-way connector, and a second three-way connector for establishing communication between outflow ports of both lines.</p> |
