JPH0123139B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a handpiece equipped with a pressurized air operated part such as an air turbine air motor or an air vibrator jet nozzle, and a lighting lamp for illuminating an affected area;
Related to dental treatment instruments such as scalers and syringes.

Conventional technology Conventionally, an air turbine, an air vibrator, and an operating section that is operated by pressurized air such as a jet nozzle that sprays pressurized water in the form of a mist or an operating section that is linked to an air motor are provided at the tip end, and an operating section that is linked to an air motor is provided at the rear end. A hand-held member with a fitting recess is connected to a coupling member that connects a flexible hose with a fitting cylinder at the tip and a supply hose for introducing pressurized air at the rear end, which can be rotated and detached by a coupling mechanism. and a light guide line guided from the fitting recess to the distal end head is provided inside the hand-held member, and a light guide line is provided behind the light guide line in a state connected to the fitting cylinder of the joint member by a coupling mechanism. For example, a dental treatment instrument comprising an illumination lamp facing an end face is disclosed in Japanese Patent Application Laid-open No.
It is known from the publication No. 58-4545.

Problems to be Solved by the Invention According to the above-mentioned known dental treatment instrument, a long lead wire for supplying power to the illumination lamp is led out from the rear end of the dental treatment instrument along with a hose for supplying pressurized air for driving. Since it is inserted into a flexible hose, the flexible hose has a large diameter and lacks flexibility, which impairs operability in dental treatment and has the disadvantage that the lead wire often breaks. Ta.

Means for Solving the Problems Therefore, the present application provides a small generator operated by pressurized air in the main body of the treatment instrument, and uses this generator to light the illumination lamp to address the above-mentioned drawbacks. .

Embodiment and its operation FIG. 1 is a sectional view showing the handheld member A and the joint member B separately, and these
They are rotatably and detachably connected via a known connection mechanism C shown in Japanese Patent No.-22728. The hand-held member A has a small-diameter recess 4 at the rear end of the shaft 3, which has a head 2 with a built-in pressurized air actuator 1 at the end.
A fitting recess 5 is provided along the axis, and there is a light guide wire 6 whose tip end extends to the head 2 and is exposed to the outside, and whose rear end face faces the center of the narrow diameter recess 4. , a driving pressurized air supply path 7a whose rear end opens in the fitting recess 5 and whose tip is guided into the head 2, and pressurization after the pressurized air actuator 1 is operated. An exhaust passage 7b for guiding air, a tip air passage and a water passage for spouting mist from the head 2 (not shown) are provided, and a connecting cylinder 8 of a connecting mechanism C is provided at the rear end of the shaft portion 3. is provided. On the other hand, the joint member B has a fitting cylinder 10 protruding from the distal end of the body 9, which rotatably fits into the fitting recess 5 of the hand-held member A, and a flexible hose 11 is connected to the rear end. At the tip of the fitting cylinder 10, a lamp cartridge 13 having an illumination lamp 12 that fits into the small diameter recess 4 and faces the rear end surface of the light guide line 6 is replaceable. A vent hole 15 is installed inside the body part 9 and communicates between a pressurized air supply hose 14 extending in the axial direction and inserted through the flexible hose 11 and the inside of the front part of the fitting cylinder 10. and the hand-held member A
An exhaust passage 21 communicating with the exhaust passage 7b of the hand-held member A and passages (not shown) communicating with the chip air passage and the water passage of the hand-held member A, respectively, are provided, and the fitting cylinder 10 is provided with a A through hole 16 for supplying pressurized air to the air supply path 7 of the hand-held member A is provided. A branch hole 1 branching from the ventilation hole 15 is provided in the body portion 9 of the joint member B configured in this manner.
7, a power generation unit 20 comprising an impeller 18 rotated by pressurized air from the branch hole 17, which is directly connected to a small generator 19; Exhaust hole 2 leading to 21
2. The power generation unit 20 has a terminal, and this terminal is electrically connected to the lighting lamp 12 of the lamp cartridge 13 via a lead wire 23. Note that the front end portion of the body portion 9 is provided with a connecting mechanism C that is connected to the connecting tube 8.

Therefore, when pressurized air is introduced from the pressurized air source into the joint member B via the pressurized air supply hose 14 in the flexible hose 11, the pressurized air flows into the fitting cylinder 10 through the vent hole 15. Through hole 16 at the tip of the inflow
is guided from the air supply path 7a of the hand-held member A to the head 2.
Activate the pressurized air operating section 1 inside. On the other hand, ventilation hole 1
The impeller 18 is rotated by the pressurized air from the branch hole 17 branched from the branch hole 17, and the generator 19 is activated. The illuminating lamp 12 is turned on, and this light beam is exposed at the head position through the light guide line 6 and illuminates the affected area.

Effects of the Invention As described above, according to the present application, in a dental treatment instrument equipped with an operating section operated by pressurized air, the pressurized air that operates the operating section is used to operate the generator, thereby providing illumination. Since it is configured to turn on a light, there is no need to lead a long cord into the flexible hose as in the conventional case, so there is no risk of damaging the flexibility of the flexible hose, and the power generation unit can be driven without adding any additional power. Since the power generation is performed by inlet of pressurized air, the power generation efficiency is high, and the power generation unit can be made compact, and since the inlet of pressurized air can be arbitrarily adjusted, it does not affect the operating efficiency of the actuating part. According to a dental treatment instrument, a hand-held member provided with an operating portion and a joint member having a flexible hose connected to the rear end are removably connected, and the joint member is provided with a power generation unit. Therefore, the joint member can be shared with hand-held members that have light guide lines and have different functions or performances, which is economical and extremely convenient for treatment work. Since it is rotated by pressurized air branched from the pressurized air supplied to the actuating part, the amount of branched pressurized air can be easily selected at the time of design, which has the advantage that an efficient treatment instrument can be manufactured. have

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a longitudinal cross-sectional view of the hand-held member and the joint member in a separated state, and FIG. 2 is another cross-sectional view of the joint member corresponding to FIG. 1. In the figure, 1 is a pressurized air actuator, 6 is a light guide line, and 11
is a flexible hose, 12 is a lighting lamp, 14 is a supply hose, 18 is an impeller, 19 is a small generator, 20 is a power generation unit, 7 and 21 are exhaust paths, A is a hand-held member,
B is a joint member, and C is a connection mechanism.

Claims (1)

[Claims] 1. A hand-held member having an operating part operated by pressurized air, a light guide line directed toward the treatment point, a flexible hose at the rear end, and an illumination lamp that irradiates the light guide line at the front end. A dental device configured to rotatably and/or detachably connect a joint member to which a connecting member is connected via a connecting mechanism, and to introduce pressurized air from a supply hose in the flexible hose to supply it to the operating section. In the treatment instrument, a power generation unit comprising an impeller connected to a generator is installed in the joint member, and pressurized air to be supplied to the operating section is branched and supplied to the impeller, and the impeller is rotated. A dental treatment instrument comprising introducing pressurized air into an exhaust path and connecting a terminal of the generator to the lighting lamp.