JP3099877B2 - Micro engine handpiece - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a micro-engine handpiece used for dental treatment, and more particularly, to a micro-engine handpiece in which a power unit and a grip unit which are detachably connected are completely electrically insulated. About.

[0002]

2. Description of the Related Art In dental care, a micro engine handpiece is used for cutting teeth and the like.
This micro engine handpiece, as is well known,
An electric motor is housed in the power unit, and the rotation of the rotating shaft of this electric motor is transmitted to the rotating shaft provided in the grip unit, and is detachably attached to the head at the tip of the grip unit through the rotating shaft. The transmitted cutting tool is used for cutting teeth and the like.

[0003]

However, the micro-engine handpiece as described above has an electric motor housed in the power section, and in the event of a leak, an electric current flows into the patient through the cutting tool. The flow is very dangerous.

The present invention has been made in view of the above circumstances, and in particular, in a micro-engine handpiece, a power unit for accommodating an electric motor, and the electric motor being removably connected to the power unit. This completely electrically insulates the gripper from which the rotation of the tooth is transmitted to the tooth cutting tool, so that the electric leakage in the power unit is not transmitted to the gripper.

[0005]

The present invention SUMMARY OF] includes a power unit housing a motor, possess a grip portion that is removably attached to the dynamic force portion, the lifting portion grip the rotation of the motors shaft microengine handpiece odor transmitted to the rotary shaft Te, the end face of the power unit which is connected to the joint member of insulating material for coupling to separate the rotation shaft of the motor shaft and the grip portion of the dynamic force portion, a gripping portion to be disposed <br/>, an insulating member for insulating between the power-side end face and the gripping end surface of the power section of the gripping portion, of the cover member of the lifting unit grip the cover member of the dynamic force portion A cylindrical insulating member provided in the power unit , interposed between the power unit and the gripping end of the water circuit of the power unit.
Is characterized in that a and pipes of an electrical insulating material which is connected to the power-side end portion of the water circuit of the grip portion, with, a specific configuration, leakage in the power unit so as not transmitted to the patient , For patient safety.

[0006]

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an essential part for explaining one embodiment of a micro engine handpiece according to the present invention.
That is, in the figure, 10 is a power unit, 20 is a grip unit, and 20 is a power unit.
And the grip 20 are detachably connected. FIG. 2 is a cross-sectional view when the power unit 10 and the grip unit 20 are separated.

In the power unit 10, 11 is an electric motor,
Reference numeral 12 denotes a rotating shaft of the electric motor 11, reference numeral 13 denotes a light bulb, reference numeral 14 denotes a water circuit, reference numeral 15 denotes a cover member, portions hatched in the drawing are insulating materials added according to the present invention, and 1 denotes a power unit 10
Connecting member that separates and connects the motor rotation shaft 12 on the motor side and the rotation shaft 21 on the grip portion 20 at a distance, 2 is an insulating pad member that insulates the end surface on the power unit 10 side and the connection end surface on the grip unit 20 side Reference numeral 3 denotes an insulating pipe (or tube) that electrically insulates the water circuit 14 on the power unit 10 side and the water circuit 22 on the grip unit side, and 4 denotes a cover member 15 on the power unit side and a gripper unit 20 side. It is an insulating cylinder that insulates between the cover member 23.

[0009]

As described above, in the present invention, the power unit 10 and the grip unit 20 of the micro engine handpiece are used.
Between rotating shafts, water circuits, contact end faces,
It is possible to electrically insulate between the covers, so that even if a short circuit occurs in the power unit 10, no current flows to the grip unit, and there is no concern that the patient will get an electric shock during dental treatment. .

According to the present invention, a power section containing a motor is provided.
If, possess a grip portion that is removably attached to the dynamic force portion, motor <br/> Te microengine handpiece odor transmitted to the rotary shaft of the lifting unit grip rotation over motor shaft, the dynamic force portion Joint member made of insulating material for connecting the motor shaft of the motor and the rotating shaft of the gripping part separately
If, disposed on the end face of the power unit which is connected to the gripping part, gripping
An insulating member that insulates between the power-side end face and the gripping end surface of the power section of the section, is interposed between the cover member of the lifting unit grip the cover member of the dynamic force portion, provided in the power section cylindrical An insulating member and a gripping portion disposed at the gripping end of the water circuit of the power section.
Insulation pipe connected to the power side end of the water circuit
Since there is provided and in which, more specific configuration, not transmitted to the patient leakage in the power unit, it is possible to patient safety.

[0011]

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part (a connecting part between a power unit and a gripping unit) of a micro engine handpiece according to the present invention.

FIG. 2 is a cross-sectional view when a power unit and a grip unit are separated in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Power part, 1 ... Rotating shaft connection insulation member, 2 ... Connection surface insulation pad, 3 ... Water circuit insulation pipe, 4 ... Cover part insulation cylinder, 11 ... Motor, 12 ... Motor shaft, 13 ... Light bulb, 14
... water circuit, 15 ... power section cover, 20 ... grip section, 21 ...
Rotating shaft, 22: water circuit, 23: grip cover.

Claims (1)

(57) [Claims] And 1. A power unit housing a motor, possess a grip portion that is removably attached to the dynamic force portion, the rotation of the motors shaft
Microengine handpiece odor transmitted to the rotary shaft of the lifting unit grip Te, is connected to the joint member of insulating material for coupling to separate the rotation shaft of the motor shaft and the grip portion of the dynamic force portion, a gripping portion It is disposed on the end face of the power unit, the gripping unit
An insulating member that insulates between the power-side end face and the gripping end surface of the power section, is interposed between the cover member of the lifting unit grip the cover member of the dynamic force portion, a cylindrical provided on the power unit The insulating member is disposed at the grip side end of the water circuit of the power unit, and the water circulation of the grip unit is provided.
Setting the pipe electrically insulating material which is connected to the power-side end portion of the road
A micro engine handpiece characterized by the fact that