Patent ID: 7249422
Filing Date: 2007-07-31
Classification: A61B

Abstract:
1. Device for measuring relative orientation of at least a first object with respect to a second object free from said first object, or connected to the first object but with independent movement, wherein said orientation is carried out according to at least one degree of freedom, comprising: at least one goniometric sensor for each said degree of freedom, constructed and arranged for measuring variation of orientation in a plane; at least one constraint generator for each said goniometric sensor, constructed and arranged to cause the sensor to move in said plane; wherein each said constraint generator comprises a flexible elongated element having a longitudinal axis with a low flexional stiffness in a first plane passing through said axis, and a high flexional stiffness in a second plane orthogonal to said first plane and passing through the axis, said element being flexible only in said first plane.