| 摘要 |
A syringe has a slide member slideably mounted on the barrel of the syringe, and the slide member is interconnected to a plunger that is slideably mounted in the barrel so that movement of the slide member effects simultaneous and corresponding movement of the plunger. This allows a syringe operator to perform aspiration and injection in sequence with one-handed operation of the syringe. The slide member is mounted near the leading end of the barrel in trailing relation to the leading end of the plunger so that the operator can see the leading end of the plunger and control its instantaneous position by sliding the slide member with a thumb or finger. The hand position of the syringe operator does not change, assuring that precise needle positioning can be made and maintained even during procedures such as sclerotherapy where needle positioning is critical.
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