Patent ID: 6811223
Filing Date: 2004-11-02
Classification: A47C,A61G

Abstract:
A stretcher having a head rest for supporting the head of the patient, comprising:a first shaft fixed onto a frame of the stretcher; a second shaft provided on a head rest; a support arm installed on the first shaft such that the support arm is rotatable and supporting the second shaft such that the support arm is rotatable; a rotation prevention member having a pressed sloped part and a pressing part, wherein a pressing force applied against the pressed sloped part is transmitted to the pressing part and the pressing part acts against a circumference surface of the first shaft or the second shaft, and the rotation prevention member is rotatably adjustable about the first shaft or the second shaft; a wedge shaped member having a pressing sloped part, which presses while sliding on the pressed sloped part of the rotation prevention member, thereby causing the pressing sloped part to press the rotation prevention member onto the first shaft or the second shaft by a wedge action caused between the pressing sloped part and the pressed sloped part; and means to apply a load, the means to apply a load adds a load onto the wedge member and maintains the state in which the first shaft and the second shaft are tightened, wherein an angle of the support arm around the first shaft and the angle of the head rest to the support arm are fixable at the same time.