Motor-adjustable head rest
First Claim
1. A motor-adjustable head rest for operating tables, comprising a head plate which is arranged at one end of a curved support shaft having an axis of curvature which is guided in a plane perpendicular with respect to the axis of curvature in a direction of adjustment on a support between three rollers which are spaced from one another in the direction of adjustment and ride in tracks formed on the curved support shaft characterized in that the tracks are shaped such that the instantaneous curvature centers of the tracks coincide with the instantaneous center of rotation Zmom of a patient'"'"'s head while resting on the head plate.
1 Assignment
0 Petitions
Accused Products
Abstract
A motor-adjustable head rest for operating tables comprises a head plate (12) which is arranged at one end of a curved support shaft (24) which, in a plane which is perpendicular with respect to the axis of curvature, is guided in an adjustable manner on a support between three rollers (26, 28, 30) which are spaced from one another in the direction of adjustment, which support can be connected to the operating table. The tracks (32, 34, 36) for the rollers (26, 28, 30) which are formed on the support shaft (24) are shaped such that their instantaneous curvature centers in each position of the support shaft (24) coincide with the instantaneous center of rotation of the head movement during the lifting and the lowering of the patient'"'"'s head (14) resting on the head plate (12).
16 Citations
9 Claims
- 1. A motor-adjustable head rest for operating tables, comprising a head plate which is arranged at one end of a curved support shaft having an axis of curvature which is guided in a plane perpendicular with respect to the axis of curvature in a direction of adjustment on a support between three rollers which are spaced from one another in the direction of adjustment and ride in tracks formed on the curved support shaft characterized in that the tracks are shaped such that the instantaneous curvature centers of the tracks coincide with the instantaneous center of rotation Zmom of a patient'"'"'s head while resting on the head plate.
Specification