Takami M, Fukui K, Saitou S, Sugiyama I, Terayama K
Kakeyu Rehabilitation Research Institute, Nagamo, Japan.
Prosthet Orthot Int. 1992 Apr;16(1):57-63. doi: 10.3109/03093649209164309.
This paper describes new passive splints which have been developed using a shape memory alloy. The peculiar feature of the splints is that the way in which they change shape in use conforms to the stretching motion which it would be desirable to apply in certain conditions of deformity. The alloy consists of 55.66% by weight Nickel and 44.34% Titanium. The heat treatment of the alloy for memorising shape was implemented at 500 degrees C for one hour. This alloy was easily bent when cool, but the original shape was recovered on heating. It was used as the supporting structure of the reverse knuckle bender splint and the cock-up splint. The new splints could be easily attached to the deformed limb after cooling. The splints avoided the development of spasticity, because they gradually recovered their original shapes and corrected the deformities when the heat of the room or body heat warmed the splints. Since the shape memory alloy has the dual function of thermal sensor and kinetic power source it was a simple device. The splint was, as a result, small and smart. It was apparent from clinical use that the splint was easy to wear and could be worn with comfort for an extended period. The design of the splints and the fabrication process are described and their application is indicated.
本文介绍了一种采用形状记忆合金研制的新型被动式夹板。这种夹板的独特之处在于，其在使用过程中改变形状的方式符合在某些畸形情况下希望施加的伸展运动。该合金由55.66%（重量）的镍和44.34%的钛组成。合金的形状记忆热处理在500摄氏度下进行1小时。这种合金在冷却时很容易弯曲，但加热时会恢复到原来的形状。它被用作反向指关节弯曲夹板和翘腕夹板的支撑结构。冷却后，新夹板可以很容易地附着在变形的肢体上。这些夹板避免了痉挛的发生，因为当室内热量或身体热量使夹板变暖时，它们会逐渐恢复到原来的形状并纠正畸形。由于形状记忆合金具有热传感器和动力源的双重功能，所以它是一种简单的装置。因此，夹板体积小且精巧。从临床使用情况来看，这种夹板佩戴方便，长时间佩戴也很舒适。文中描述了夹板的设计和制作工艺，并说明了其应用情况。
