Dental patient chair with changing patient position while maintaining mouth position
AssigneeSiemens Aktiengesellschaft
InventorKlaus Stoeckl
Life of this patent
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Abstract
A dental patient chair has a seat, backrest and headrest which are adjustable in both the horizontal and vertical directions relative to a base part to establish a given chair position for treatment. The patient chair includes a controllable positioning arrangement which enables positioning a reference point or "mouth point" in a particular position in both the vertical and horizontal directions and enables varying this point in view of changes either in the size of the patient, the size of the attending person, or a change between a sitting and standing position for the attending person.
Claims18
A dental patient chair comprising a base part, upper chair parts consisting of a seat, backrest and headrest part, adjustable means for mounting the upper chair parts on the base part and including controllable drive means for varying at least the height adjustment and longitudinal displacement of the upper chair parts relative to the base part, additional adjustment means for adjusting at least the headrest part and the backrest relative to the seat, sensor means for determining the respective actual position of the respective upper chair parts, means for inputting and storing target values corresponding to predetermined positions for a reference point facing toward the headrest part and control means for calculating the amount of change of the actual position of the headrest part from a targeted position and creating drive signals for the adjustment means to obtain the necessary height and longitudinal displacement of the upper seat parts relative to the base part for the purpose of keeping the actual value constant for the input target value of the reference point.
A dental patient chair comprising a base part, upper chair parts consisting of a seat, backrest and headrest part, adjustable means for mounting the upper chair parts on the base part and including controllable drive means for varying at least the height adjustment and longitudinal displacement of the upper chair parts relative to the base part, additional adjustment means for adjusting at least the headrest part and the backrest relative to the seat, sensor means for determining the respective actual position of the respective upper chair parts, first means for inputting and storing target values corresponding to predetermined positions for a reference point facing toward the headrest part, second means for inputting and storing quantities of a plurality of different chair positions, which define the positions of the adjustable chair parts, processing means defining the values of said different chair parts to said target values as a common reference point, and control means activating said controllable drives in order to approach one of the selected different chair positions.
Dependencies are inferred from the claim text.