| 摘要 |
<p>Powered infuser apparatus for drugs administration comprises a housing (10) carrying a roller (22), means (21, 26-32) holding a syringe (40) in predetermined disposition to said housing with its plunger (43) having its side drivably engaged across the roller, a motor (11), and a transmission (12, 16, 24) operably coupling the motor and roller. The roller is preferably toothed, in pinion gear form, with smooth bottom lands separating successive teeth, and teeth of triangular shape with apex angle about 60 DEG and a negative rake about 12 DEG . The associated syringe preferably has a barrel (41) and plunger of circular cylindrical form, suitably partially received in a trough (21) in the housing, with the barrel and trough respectively having an annular flange (42) engaging a groove (32). </p> |
