TSUANG, FON YIH,曾峰毅,曾峰毅,CHEN, CHIA HSIEN,陈加宪,陳加憲,CHIANG, CHANG JUNG,江长蓉,江長蓉,KUO, YI JIE,郭宜洁,郭宜潔
申请号：
TW102220508
公开号：
TWM482369U
申请日:
2013.11.04
申请国别(地区):
TW
年份:
2014
代理人:
摘要：
A bone screw of minimally invasive fixation device for lumbar comprises a positioning casing (200) and a screw body (100). The positioning casing includes a rod securing base (210) and an alignment portion (220), which are integrally formed an annular notch (230) is formed between them. The alignment portion has at least one pair of rod alignment openings (221, 222). Two longitudinal notches (224) extend from near the top across the alignment openings to the rod securing base. The screw body is rotatably connected to the bottom portion of the positioning casing the spherical head of the screw body is arranged in a spherical pit of the rod securing base. The alignment portion can be broken into two pieces and separated from the rod securing base by applying a force to the wall of the alignment portion to break the longitudinal notches as well as the annular notch.一種腰椎微創固定裝置之骨釘,其至少包括:一定位套及一螺釘體;該定位套具一連桿固定座及一校準部,該連桿固定座與校準部係呈一體的,而該連桿固定座與校準部之間由一環型切槽所界定;該校準部的側牆上設有至少二對連桿校準開口,該等開口之孔形係呈上大下小之燈泡型或鎖孔型,另於前述各開口之鄰接處的側牆上設有軸向切槽;該螺釘體,包含一球形頭及一螺桿,該球形頭外徑大於該螺桿外徑,且該球形頭連結於該螺桿的頂部;其中,該螺釘體可樞接於該定位套的底端部位,使該螺釘體的球形頭套置在該連桿固定座的球型坑中;該定位套的校準部可藉由對側牆提供一向外的撐開力,使前述軸向切槽及環型切槽呈斷裂,該校準部得以裂解成二片並與該連桿固定座成為分離,以便自該定位套去除該校準部。100‧‧‧螺釘體110‧‧‧球形頭120‧‧‧螺桿121‧‧‧外螺紋122‧‧‧螺尖端200‧‧‧定位套210‧‧‧連桿固定座213‧‧‧螺紋214‧‧‧U形開口220‧‧‧校準部221、222‧‧‧連桿校準開口223‧‧‧∩形開口224‧‧‧軸向切槽230‧‧‧環型切槽
