| 摘要 |
Retractable needle having an elongated tubular needle housing having a longitudinal axis and a slot. A needle disposed within the housing. A manual ly adjustable sliding member engaging the slot in the housing and being secured to the needle, such that when the sliding member is slid along the slot in a first direction, the needle assumes an extended position extended from the housing. When the sliding member is slid along the slot in a second direction, the needle assumes a retracted position retracte d within the housing. The slot has a first end at a first axial position relative to the longitudinal axis, a second end at a second axial position relative to the longitudinal axis, the second end being axially and circumferentially spaced from the first end, and a transition portion that extends around the circumference of the housing at an angle to connect the first end and the second end.
|
