| 摘要 |
<p>PURPOSE:To secure good slidability while the air-tightness is well maintained in a slide plug, which is fitted slidably in an injector barrel of an injector, by covering the medicine contacting surface of the slide plug with a synthetic resin film, and leaving the end continuing to the medicine contacting surface in the condition as it has been as a raw surface of resilient substance. CONSTITUTION:The first slide plug for sealing 10 is fitted in approx. the central position of the injector barrel 2 of an injector which serves also as a vessel 1, and thereby the inside of the barrel 2 is divided into two segments, and the chamber bounded by a rubber plug 4 which seals the foremost extremity 3 of the barrel 2 is filled with a concentrated medicine 12. The second sealing slide plug 11 is installed in a position nearer the barrel opening 5 than the first slide plug 10, and a dilute medicine 13 is preserved between the two slide plugs 10, 11. In this injector/vessel 1, a synthetic resin film later 16 is laid over the medicine contacting surfaces 16 of the slide plugs 10, 11, while the end part of the drum 19 continuing to the medicine contacting surfaces 16 is formed as a ring-shaped body 17 remaining as a raw surface of resilient substance where no synthetic resin film layer 16 is laid, with the other portions covered with the synthetic resin film layer 16.</p> |
