JP2002272840A5 - - Google Patents

Description

[0010]
The first gasket 2 on the tip 11 side has seal portions 21 at both ends, and a chemical solution passage 22 is provided in the central portion. The drug solution passage 22 may be an annular groove 22 formed between the seal portions 21 or a through hole (not shown) crossing the gasket. The first gasket 2 is slidable from a first position at which the inlet 13 and outlet 14 of the cylindrical body 1 communicate with each other through the chemical liquid passage 22 from the first position to the tip 11 of the cylindrical body 1 The distal end 11 of the body 1 is provided with an annular projection 16 so that the first gasket 2 does not move beyond the distal end 11. When the first gasket 2 is moved in the direction of the tip 11, it stops at a second position in which the drug solution chamber 4 communicates with the drug solution outlet 14 and does not communicate with the inlet 13, Stop means are provided at the tip. As the stopping means, for example, as shown in FIG. 1, a plurality of longitudinal ribs 15 provided in the inner wall of the cylindrical body 1 and extending in the tip direction from the position abutting the tip of the first gasket 2, Although not shown, abutment member which is freely inserted removably into the lumen from the distal end 11 direction (e.g., the same cap-like member and the pusher 5 to be described later, however, the outside diameter of the insertion portion of the annular projection 16 It is necessary to make it smaller than the inner diameter) or the like.