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Built-in dental syringe with contact detection circuit and illuminating device

A technology for detecting circuits and contacts, applied in lighting devices, circuit devices, emergency protection circuit devices, etc., can solve problems such as troublesome and complicated treatment operations, and achieve the effect of preventing adverse effects and alleviating rapid changes in load current.

Inactive Publication Date: 2003-03-19
MORITA MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the handle and the light switch for ejecting the fluid are provided separately, it is troublesome to operate the handle and the light switch at the same time, which leads to complicated treatment operations.

Method used

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  • Built-in dental syringe with contact detection circuit and illuminating device
  • Built-in dental syringe with contact detection circuit and illuminating device
  • Built-in dental syringe with contact detection circuit and illuminating device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] Embodiments of the present invention are now described in detail:

[0040] figure 1 It is a block diagram showing the principle constitution of the present invention. A light source 12 for lighting such as a lamp or a light-emitting diode is provided on the operation portion body 11 , and a switch 13 for controlling the light source 12 is further provided. On the one hand, the load control circuit 16 detects the on-off of the switch 13 through the signal line 15 , and at the same time, once the switch 13 is closed, it also energizes the light source 12 to light up through the driving line 14 . In this way, since the switch 13 is provided on the operating part body 11, the operability of the treatment operation is greatly improved.

[0041] figure 2 yes figure 1 A deformed example of . The operating part body 11 and the load driving circuit 16 are connected by three wires 17a-17c, wherein 17a is used as a driving wire, 17c is used as a signal wire, and 17b is use...

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Abstract

The invention provides a contact detecting circuit which surely detects the open / close of contact of a switch, etc., to provide a load drive device and also to provide a dental syringe with a built-in illuminator and can improve its durabil ity, operability, etc. A load drive device consists of a handpiece main body and a load control circuit. The main body contains an illumination power supply and a switch which includes the conduction members. The circuit contains an oscillation circuit which generates an AC signal to be applied to the member, a signal detecting circuit which rectifies and smoothes the signal received from the member when the switch is closed, a comparator which compares the output signal of the circuit with the prescribed reference value, a control circuit, and a drive circuit which supplies the power to the power supply from a power circuit based on the control signal of the circuit.

Description

technical field [0001] The present invention relates to a contact detection circuit for detecting the opening and closing of electric contacts, a load driving circuit for detecting the opening and closing of electric contacts and driving a light source or a motor, and further relates to a dental syringe incorporating an illuminating device for illuminating treatment sites and the like. Background technique [0002] In the past, in dental treatment, in order to cut teeth, remove tartar, clean the treatment site, and recover cutting debris or saliva, etc., such as air turbine operating parts, small motor operating parts, descalers, three-purpose syringes, and vacuum syringes were used. and other various operating components. When these operating parts are used for oral treatment, an operating lighting lamp is additionally provided on the diagnosis and treatment table to illuminate the oral cavity for treatment operation. [0003] However, if the patient's posture or the direc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C1/08H01H1/60H01H9/16H02H9/00
CPCH01H9/167A61C1/088H01H1/605H02H9/001
Inventor 沼川诚小山涼三堀田敏博
Owner MORITA MFG CO LTD
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