| 摘要 |
<p>This invention provides a cartridge cap for preventing air staying in a cylindrical cartridge even if the air is sucked in during a sealing operation of the opening portion of the cylindrical cartridge in which medicinal solution is filled. The air which is sucked in during a sealing operation of the opening portion of the cylindrical cartridge 2 is released to the outside of the cylindrical cartridge 2 through an air relief passage AR which is formed along the inner periphery of the cylindrical wall portion 1B including the gap between the outer periphery of the rip portion 2A of the cylindrical cartridge 2 and the part of the inner periphery of the cylindrical wall portion 1B where no terrace shaped receiving portions 1F, 1F,.. are formed. It is possible to prevent air from staying in the cylindrical cartridge 2.</p> |
