| 摘要 |
Syringe (10) for discharging two components comprises a housing (12)d, a piston (20) at least partly inside said housing and axially moveable relative thereto between a first and a second position, a hollow cylindrical container (22) at least partly inside said housing, surrounding said piston and axially moveable relative to said piston between a first and a second position, a first compartment (24) defined within said housing between the distal end of said piston assuming its first position and the distal end of said housing for receiving a first component (28), a second compartment (30) defined within said container assuming its first position between the proximal end of said container and the proximal end of said piston for receiving a second component (36), an axially extending passage (38) in the interior of said piston and in communication with said first compartment and a radial opening (40) of said piston in the region of the proximal end of said piston, sealing means (52) for preventing communication between said second compartment and said radial opening of said piston when the container assumes its first position, and releasable retaining means (44) for retaining said piston in its first position until said container has reached its second position. The syringe is further adapted so that communication between said second compartment and said radial opening of said piston is established after initiation of the movement of said container out of its first position towards its second position relative to said piston, thereby transferring said second component from said second compartment into the radial opening and through the axial passage of the piston into said first compartment, said retaining means are released by said container reaching its second position, and with the further movement of said container into said housing and the simultaneous movement of the released piston out of its first position towards its second position, the two mixed components are pressed out of said first compartment. |
