DILLARD, JOHN A. B., III,迪拉德 约翰Ａ Ｂ 三世,迪拉德 約翰Ａ Ｂ 三世,迪拉德 约翰A B 三世,迪拉德 約翰A B 三世
申请号：
TW101138317
公开号：
TW201304829A
申请日:
2009.08.14
申请国别(地区):
TW
年份:
2013
代理人:
摘要：
An improved safety hypodermic syringe includes a reciprocal tubular needle sheath disposed on the exterior of the syringe body, a latch mechanism engaging the syringe body and the sheath to latch the sheath in a needle-covering position after delivering contents from the syringe body, and a spring engaging the syringe body and the sheath and expandable to move the sheath to cover the needle point, where the spring is a non-uniform helical spring having multiple 360° turns each turn uniformly spaced from adjacent tums, each 360° tum comprising first and second alternating angled portions, the first of the alternating angled portions being at a first angle to a plane perpendicular to an axis through the center of the helical spring and the second angled portions being at a second lesser angle to the plane perpendicular to the axis.本發明提供一種改良之安全皮下注射器，其包含一設置於該注射器本體之外部的往復式管狀針護套、一接合該注射器本體及該護套以在內容物自該注射器本體輸送出之後將該護套閂鎖於一針覆蓋位置之閂鎖機構、及一接合該注射器本體及該護套且係可拉伸以移動該護套來覆蓋該針尖之彈簧，其中該彈簧為一非均勻螺旋彈簧，其具有多個360°捲繞圈，各個捲繞圈係與相鄰捲繞圈均勻地隔開，各個360°捲繞圈包括數個第一及第二交替有角度部分，該等交替有角度部分中之該等第一有角度部分係與一垂直於一穿過該螺旋彈簧之中心的軸線之平面成一第一角度，且該等第二有角度部分係與垂直於該軸線之該平面成一第二較小角度。
