| 摘要 |
A device for withdrawing an injection solution wherein fine glass fragments can be readily filtered off for removal. The device comprises a tube which can cover an injection needle and has one end intimately fitted to the base portion of the needle and the other end packed with a filter medium. Because the interior of the tube is subjected to reduced pressure when the needle withdraws the injection solution from an ampule with the latter end immersed in the solution, the whole solution is withdrawn from the ampule through the filter medium.
|
