| 摘要 |
<p>Adjustable dosage syringe wherein the syringe plunger (4) has sets of multiple closely spaced indentations (9) along the length of the plunger, and a dosage selection ring (7) disposed around the plunger. The inside circumference (10) of the dosage selection ring (7) has protuberances (8) which are registrable with and receivable in one of the indentations (9) of the sets of indentations so that when one protuberance (8) is received in an indentation (9) of the first set of indentations, the other protuberance (8) is also received in an indentation (9) in the second set of indentations. Channels (12) are disposed along the length of the plunger for simultaneously and slidably receiving the protuberances (8) so that the ring is longitudinally slidable along the length of the plunger (4). Thus, any desired dosage may be achieved by rotating the ring so that the protuberances (8) are disposed in the channel (12), sliding the ring along the length of the plunger, to that point corresponding to the desired dosage, and rotating the ring so that the protuberances are received by the indentations. The plunger is then forced into the syringe until the ring is engaged by the barrel of the syringe and stops further movement of the plunger into the syringe. </p> |
