Broadhurst M J, Stammers C W
Bath Institute of Medical Engineering, Wolfson Centre, Royal United Hospital, UK.
J Biomed Eng. 1990 May;12(3):209-14. doi: 10.1016/0141-5425(90)90043-m.
A mechanism has been designed which transforms steady, vertical hand motion into the scooping motion of a spoon. The mechanism incorporates vibration isolation through a spring-damper system to attenuate the transmission of low frequency (2-8 Hz) hand tremor to the spoon. A series arrangement of spring and damper has produced spoon amplitudes of between 5 and 12% of the hand amplitude at the lowest ataxic tremor frequencies. A prototype has been tested by four ataxic patients. The degree of vibration isolation and the ability to pick up food were adequate but the mechanism was felt to be unacceptable as a feeder for social reasons. Two other mechanisms have also been considered.
已设计出一种机构，可将稳定的垂直手部运动转化为勺子的舀取动作。该机构通过弹簧 - 阻尼系统实现隔振，以减弱低频（2 - 8赫兹）手部震颤向勺子的传递。在最低共济失调震颤频率下，弹簧和阻尼器的串联布置使勺子的振幅为手部振幅的5%至12%。一个原型已由四名共济失调患者进行了测试。隔振程度和拾取食物的能力足够，但出于社会原因，该机构作为喂食器被认为是不可接受的。还考虑了另外两种机构。
