本实用新型公开了一种双头螺纹紧固装置。
The utility model discloses a double thread fastening device.
目的初步比较经颈前路单枚单头螺纹中空加压螺钉与双头螺纹中空加压螺钉内固定治疗齿突骨折的效果。
Objective To compare the clinical effectiveness of fixations of odontoid process fractures preliminarily with anterior single one-threaded and double-threaded canulated compressive screws.
三枚中空双头螺纹加压钉比三枚实心螺纹钉、三翼钉在抗压、抗弯、抗扭强度和刚度上占有一定的优势。
The 3 hollow double heads compression screw appear to offer distinct advantage over the 3 solid screw, trifin in the against pressure, against bending force, torsional strength and torsional rigidity.
利用9具成年新鲜股骨尸体标本，分别采用中空双头螺纹加压钉、实心螺纹钉、三翼钉进行股骨颈骨折内固定，并进行生物力学实验。
Using 9 cadaver femora instrumented, the fracture of femoral neck was fixed with 3 hollow double heads compression screw, 3 solid screw and Trifin respectively.
用螺纹联接并起紧固作用的零件称为螺纹紧固件。常用的螺纹紧固件有螺栓、双头螺柱、螺钉、螺母、垫圈等。
Parts with threads used for joining and fastening are called screw fasteners. The most widely used components as screw fasteners are bolts, double screw bolts, screws, nuts, washers.
方法：应用中空双头加压螺纹钉加折断式螺钉治疗股骨颈骨折。
Method: Treatment of femoral neck fractures using hollow double ends compressive screws and breaking screws.
我公司有各种设备198台，主要生产全螺纹螺杆、双头螺柱、圆螺母、吊环、销类等。
My company has a variety of devices 198 Units, mainly the production of full-thread screw, double-headed stud, round nuts, rings, pin and so on.
翼缘法兰螺栓应为双头螺栓，螺纹为全长型，内径600mm或以下的法兰的螺栓至少为m 16，内径600 mm以上的法兰的螺栓至少为m 20。
Girth flange bolting shall be of stud bolt type, threaded full length, and at least M16 for flange of 600 mm and smaller inside diameter and at least M20 for over 600 mm inside diameter flange.
翼缘法兰螺栓应为双头螺栓，螺纹为全长型，内径600mm或以下的法兰的螺栓至少为m 16，内径600 mm以上的法兰的螺栓至少为m 20。
Girth flange bolting shall be of stud bolt type, threaded full length, and at least M16 for flange of 600 mm and smaller inside diameter and at least M20 for over 600 mm inside diameter flange.
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