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A dental patient chair

A patient and chair technology, applied in the field of equipment that allows patient chair movement, to solve problems such as time-consuming, complicated replacement or change of components

Active Publication Date: 2017-05-17
CEFLA SOC COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, when modifying the law of relative motion between the backrest and the seat, exchanging or changing the components of the mechanism is complex and time-consuming, since it requires access to and disassembly of the kinematic chain of the joint between the backrest and the seat a large number of parts

Method used

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  • A dental patient chair
  • A dental patient chair
  • A dental patient chair

Examples

Experimental program
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Embodiment Construction

[0052] figure 1 A typical dental patient chair 1 is shown comprising a backrest 2 , a fixed part 3 of the seat hinged to a footrest 13 , a base 4 and a pantograph arm 5 . Seat 1 is shown with an upright backrest approximately perpendicular to the floor.

[0053] For simplicity, a two-piece chair seat is shown with two articulations, one at the level of the patient's hips and one at the level of the patient's knees: thus, moving the footrest 13 can Hinged with the fixed part 3 of the seat. In any case, the operation remains the same even for a seat with only part seat 3 .

[0054] The zoom arm 5 allows indicative raising and lowering of the seat 3 relative to the floor from a height of 460 to 840 mm. The top end of the zoom arm forms a kind of tower 14 that supports the reclining mechanism of the backrest and the coordinated movement of the seat. The structure of the tower 14, base 4 and pantograph arm 5 is known and therefore not an object of the present invention.

[00...

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PUM

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Abstract

The invention relates to a dental patient chair. The patient chair (1) preferably for dentistry comprises a lifting group comprising a base (4) on which a pantograph arm (5) is hinged, with the pantograph arm being hinged on and shifting a turret (14); and a moving group for relatively moving said seat (3), comprising an under seat (15) which is in its turn hinged to said turret (14) through two piston rods (6 and 7), wherein the reclining of the backrest (2) occurs according to an arc of a circle, and the chair (1) also comprises a longitudinal compensation mechanism. The dental patient chair is characterized in that the reclining and compensation movements are achieved thanks to the dynamic combination of an arc prismatic guide system for backrest reclining and a four-bar linkage for moving the under seat (15) and seat (3), and the four-bar linkage comprises the two piston rods (6 and 7), the turret (14) and the under seat (15) which links the seat (3) to the turret (14).

Description

technical field [0001] The invention relates to the technical field of patient chairs used in dentistry. More specifically, the present invention relates to an apparatus and method for allowing movement of a patient chair. Background technique [0002] In the history of dentistry, at least until the 1960s, dentists used to work standing up, whereas today dentists mostly work sitting. Dental chair manufacturers strive to provide dental treatment units that allow the dentist to work more efficiently, ie comfortably, without damaging the dentist's musculoskeletal system. [0003] At the same time, the patient seat must be comfortable for the patient: a comfortable patient is more relaxed and the dentist's job is easier. [0004] An appreciated feature of the dental patient chair is the ability to hold the patient in the Trendelenburg position. The Trendelenburg or shock position is the position in which the patient is placed in shock situations or during the performance of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61G15/02A61G15/10
CPCA61G15/02A61G15/10A61G2200/327
Inventor M·特龙贝蒂
Owner CEFLA SOC COOP