激光双十字线预定位装置设计

Design of laser dual-crossed-line pre-positioning device

目的 :研制一种激光定位装置,用于GE OEC850型和万东HMC-36型C型臂。方法 :整个装置由2个十字型激光管、定时电路、电源3个部分组成。利用激光双十字线定位法,根据GE OEC850型和万东HMC-36型C型臂球管与影像增强器之间的距离,确定最佳的30 cm投照点,进而确定30 cm上下的投照范围,锁定投照区域。结果:激光双十字线预定位装置解决了医生在手术中因定位不准而反复移动机器进行多次投照的问题,减少了手术中医护人员和患者被动接受X线的辐射量,延长了球管的使用寿命,降低了医院采购设备的成本。结论:激光双十字线预定位装置定位准确,操作简单,能够满足临床手术要求。

Objective To develop a laser positioning device for GE OEC850 and Wandong HMC-36 C-arm. Methods The device was composed of two cross-type laser tubes, timing circuit and power source. The optimal 30 cm projection point was determined with laser dual-crossed-line positioning method and considerations on the distance between the tube of GE OEC850 or Wandong HMC-36 C-arm and the image intensifier. Then the projection range was found around 30 cm to define the targeted area. Results The device eliminated the needs of multi times of projection due to improper positioning, decreased the exposure to medical personnel and patient during the operation, prolonged the service life of the tube and reduced the cost for hospital equipment. Conclusion The device behaves well in positioning and easy operation, and thus is worthy promoting clinically.