JPH0313301Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention allows a lighting device to be removably fitted into an instrument, and the lighting device can be used to accurately illuminate target areas according to the purpose of treatment, etc. This invention relates to a three-way dental syringe with a built-in illumination device that has been improved so that it can be used as a dental syringe.

(Prior Art) Many conventionally used dental instruments do not have an illumination mechanism themselves.
The treatment target area was illuminated and guided by an external lighting device or the like.

For this reason, the illumination light beam may be blocked or partially cut off depending on the treatment position of the medical practitioner or hygienist or the treatment area, which is particularly inconvenient when treating the oral cavity, which has a small space and a complex shape. There were problems such as.

(Problem that the invention attempts to solve) For this reason, for example, "Utility Model Application Publication No. 60-69113"
A dental injection handpiece with an injection nozzle removably held in a bent state in a grip is provided, in which a light emitting element, particularly a light bulb, is disposed in the grip, and a light guide in the nozzle is used to direct various parts of the oral cavity. An apparatus for irradiating is disclosed.

However, in such a device, the illumination bulb of the grip part is connected with a lead wire into an intermediate fitting close to the folded part of the grip, or is installed in a socket in the grip part via a retainer. Therefore, for example, when a medical technician or the like installs or removes the lighting bulb, it is necessary to perform complicated attachment/detachment operations to and from the electrical connection part, which is made up of intermediate fittings, sockets, etc. each having a specified shape. In addition, since the switch for this lighting bulb is located adjacent to the push buttons for air and water supply on the same surface at the bent position of the grip, it is difficult to adjust the operation of each of the buttons and switches during use. Also, the bent shape makes it easy to slip, causing problems such as difficulty in performing the desired operation when pressing a push button or switch on the bent portion.

Therefore, in order to solve the above-mentioned problems with the conventional dental instruments such as hand pieces and syringes, the present invention has been developed to install a cartridge-type illumination device in the head section of the device body in the direction of the nozzle axis that is attached to the head section. The nozzle is removably fitted into the lamp fitting hole in the head part, which is provided so as to penetrate through the nozzle, and the lamp of the illumination device is activated by the switch mechanism on the main body side, and the illumination beam is directed from the nozzle tip opening to the dental treatment area, etc. An object of the present invention is to provide a three-way dental syringe with a built-in illumination device that enables accurate irradiation.

(Means for Solving the Problems) The configuration of the present invention for achieving the above object will be explained using FIGS. 1 to 4 corresponding to the embodiments. The way syringe S is mainly composed of a grip body 1 and a nozzle 5 detachably attached to a head portion 2 of the body 1, as shown in FIG. 1 showing its overall configuration.

That is, as shown in the figure, the grip main body 1 has a tube 3 connected to its rear end that serves to introduce a supply medium such as air A and/or water W into the main body 1, and also serves to supply the supply medium A, W. Conduits C ₁ and C ₂ are disposed up to a head portion 2 located at the tip of the main body 1. A mechanism J for adjusting the flow rate of these supply media A, W, etc. is installed in the middle part of the main body 1, and the supply pipes C ₁ and C ₂ in the direction in which the media A and W travel on the tip side are controlled by vertical movement. A lever 9 as shown in FIG. 2 for opening and closing is pivoted so as to be able to protrude from the smooth-shaped main body cover 4 as shown.

Further, in the head part 2 on the distal end side, a nozzle 5 which is bent with respect to the grip body 1 as shown in the enlarged view of the main part shown in FIG. By screwing the nozzle cover nut 51, which is loosely passed through the nozzle 5, into the nozzle 21, the nozzle is removably connected to the head portion 2. 5 is rotatably held relative to the head portion 2.

That is, the supply medium pipes C ₁ and C ₂ extending to the head section 2 are connected to the air supply pipe C ₃ and the water supply pipe C 3 arranged inside the nozzle 5 by connecting the nozzle 5 described above. ₄ and can be discharged from the nozzle tip port 30 connected to air and water, and the head section 2 is provided with a lighting device P. The lamp is inserted into and removed from the outside of the head 2 into a lamp fitting hole 20 that is opened from the outside in the direction of the nozzle axis and is provided in communication with the air pipes C ₁ and C ₃ . The illumination lamp 7 held by the illumination device P emits illumination light, and the illumination light beam is irradiated outward from the nozzle tip opening 30 through the light guide fiber 8 disposed inside the nozzle 5. being done.

To explain more specifically, the lighting device P is:
The rear part of the lamp 7 is held by a holder 6, as shown in the explanatory diagram shown in FIG. ，
15 is further held between a fixed holder 24 fixed to the head part 2 by a fixing screw 25, and is connected to a contact rod 23 formed by soldering an electric wire connected to the lighting switch 10. 15,
15, and an illumination switch 1 located on the lower surface of the grip body 1 shown in FIG.
0, or as shown in FIG. 8, the input of the switch 10 is received through the contacts 15, 15 by electrical linkage with the illumination switch 10a provided inside the lever 9, and the irradiation light is generated. The irradiation is stopped by turning off the switch 10.

The fitting into the fitting hole 20 provided in the head portion 2 can be achieved by fixing the holder 6 at the rear thereof with a presser plate, set screw 16, etc. as shown in FIG.
Alternatively, it may be removably fitted into the head portion 2 by direct fitting or screwing or other fixing means.

On the other hand, when the nozzle 5 is detachably connected to the head portion 2 and rotatably connected to the main body 1, the nozzle 5 is connected to the supply medium conduits C ₃ and C ₄ as shown in FIG. A light guiding fiber 8 is disposed coaxially or non-coaxially from a position close to the lamp 7 to its tip 31, and the illumination light beam of the lamp 7 is passed through the light guiding fiber 8 to the nozzle tip opening 30.
It is configured to radiate outward.

(Function) The function of the present invention will be explained based on FIGS. 1 to 3 corresponding to the embodiment. The lamp 7 is removably fitted together with the lighting device P into the lamp fitting hole 20 provided so as to penetrate in the axial direction of the nozzle 5, and the air and/or water supplied from the rear end side of the main body 1 is supplied to the main body 1. The air supply lever 9 as shown in FIG.
A and a water supply lever 9b are operated to form a medium supply conduit in the nozzle 5, which is connected to the grip head section 2 with air, water, or a mixture of air and water as appropriate.
C ₃ and C ₄ to the nozzle tip 31 side, and the lamp 7 of the lighting device P is connected to a lighting switch 10 provided at a position substantially opposite to the lever 9 on the lower surface of the main body 1 as shown in FIG. The light is turned on by a push operation, or by the operation of a lighting switch 10a provided inside the lever 9 as shown in FIG. To accurately inject a medium consisting of air and water to a treatment site such as a tooth.

(Embodiment) Figs. 5 to 8 show other embodiments of the present invention, and Fig. 5 shows a grip on the main body 1 at a position substantially opposite to the inside of the lever 9a provided on the grip main body 1. This shows an embodiment in which a lamp switch 10a serving as a lighting operation switch is provided so that the lamp 7 of the lighting device P can be turned on in response to the operation of the lever 9a. By opening the air supply pipe _C1 by pushing the lever 9a, the lamp 7 of the lighting device P can be turned on at the same time without requiring the operation of the lighting switch 10 installed on the side. Become.

In this case, the lighting switch 10 is not particularly required, but the water supply function by the other lever 9b is provided to maintain a treatment mode using a mixture of air and water.

FIG. 6 shows that the lever 9b is placed on the grip body 1 at a position substantially opposite to the inside of the lever 9b provided on the grip body 1.
This shows an embodiment in which a lamp switch 10b is provided so that the lamp of the lighting device P can be turned on in response to the operation of b.By installing this lamp switch 10b, the lighting switch 10 is not particularly required as described above, and the water supply pipe is If the channel _C2 is opened by pushing the lever 9b, the lamp 7 can be turned on at the same time.

In this case as well, it is natural to provide an air supply function, but as in these embodiments, lamp switches 1 are individually installed on the air supply A side or the water supply W side.
Instead of providing 0a and 10b, a lamp switch 10c linked to both may be provided integrally. That is, in FIG. 7, both levers 9a and 9 are placed on the grip body 1 at a position substantially opposite to the inside of the levers 9a and 9b which are pivoted on the grip body 1.
For example, a lamp switch 10c that is operated in response to both the levers 9a and 9b as shown in the figure is provided to engage the light switch 10c, which is connected to either the air supply A side or the water supply W side that supplies air and water. Lever 9
Even if you push a and 9b, the lighting device P inside the head 2
can be made to light up.

Thus, in the above-described embodiment, a configuration was shown in which the illumination switch 10 on the lower surface side of the main body 1 was not particularly required, but on the other hand, as shown in FIG. The lighting switch 10 can turn on the lighting device P even in the state
In addition, as shown in FIGS. 5 to 7 above, a lighting switch 10a, 10b, or 10c that operates in correspondence with the lever 9, that is, a lamp switch 10a, 10b, or 10c that is electrically linked to the lamp 7 constituting the lighting device P, is also provided. By doing so, the lighting device P can be
It becomes possible to turn on the light, and it becomes possible to produce a therapeutic effect according to the purpose as appropriate.

Moreover, the above-mentioned lighting switch 10 or 10a, 10
b, 10c, especially for purposes such as dental treatment,
By making the switching mechanism a momentary type or an alternate type, it becomes possible to irradiate each treatment site with a suitable irradiation light beam depending on the treatment mode.

Furthermore, if the lamp 7 constituting the illumination device P is installed in the air supply pipe _C1 of the grip body head 2, the lamp 7 is cooled by the air A flowing through the pipe _C1 . This is advantageous because it extends its life.

(Effects of the invention) As described above, the dental 3-way syringe with a built-in lighting device of the present invention has a lamp of a cartridge-type lighting device inside the grip body so as to penetrate in the axial direction of the nozzle connected to the head portion. The lamp of the lighting device is removably fitted into the provided lamp fitting hole, and the lamp of the lighting device is placed in a position facing the air and water supply lever located on the smooth cover surface of the grip body, or on the inside of the lever. Since the irradiation is performed by operating a lighting switch, when in use, a doctor or the like can operate the lever and irradiate the lamp of the lighting device with a single touch, and the illumination beam can be directed to the treatment area toward the tip of the nozzle. Since the rays are irradiated with the same amount of radiation, the treatment operation becomes easier and the treatment effect is enhanced.

Furthermore, the above-mentioned illumination device has a simple cartridge system that does not require complicated accessories as in conventional products, and is provided with a hole extending from the outside of the main body head section in the direction of the nozzle axis. Since the lamp can be easily inserted into and removed from the outside of the head, it can be easily attached to and removed from the head of the main body, and the treatment operation can proceed smoothly.

Furthermore, by providing the switch system of the illumination device on the grip body at a position close to the lever in correspondence with the lever and linking the switch system, various treatment modes corresponding to the treatment purpose can be adopted.
It has advantages that cannot be achieved with the configuration of conventional products.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing the structure of a three-way dental syringe with a built-in illumination device according to the present invention, FIG. 2 is an explanatory plan view of the same, and FIG. FIG. 4 is an explanatory diagram showing the configuration of the lighting device, and FIGS. 5 to 8 are explanatory diagrams showing the arrangement of the lighting switch. . Explanation of symbols: 1...Grip body, 2...Head part, 3...Tube, 4...Body cover, 5...
... Nozzle, 6 ... Lamp holder, 7 ... Lamp, 8 ... Light guide fiber, 9 ... Lever, 9a
...Air supply lever, 9b...Water supply lever, 10
... Lighting switch, 11 ... Nozzle cover nut, 20 ... Lamp fitting hole, 21 ... Head collar, 30 ... Nozzle tip opening, 31 ... Nozzle tip, A, W ... Supply medium, C ₁ , _C2 , _C3 , _C4 ...
Medium supply conduit, J... Adjustment mechanism, P... Lighting device, S... Dental 3-way syringe with built-in lighting device.

Claims (1)

[Claims for Utility Model Registration] 1. A grip body, a lever that opens and closes a supply pipe for air and water supplied via a tube connected to the rear end of the grip body, and a lever located at the tip of the body. a nozzle that is removably attached to a head that is rotatable relative to the main body; the head is connected to the nozzle in a bent state relative to the main body; In the lighting device, a light guide fiber that transmits light from a lighting lamp held in a lighting device provided in the head portion of the main body extends to the tip portion along with the air and water supply pipes. In the dental three-way syringe with a built-in device, an illumination switch is provided inside the lever provided on the grip body or on the lower surface side of the grip body substantially opposite to the lever, and when the illumination switch is activated, the illumination device is activated. A three-way dental syringe with a built-in lighting device, characterized in that it lights up an illumination lamp. 2 The lighting device is inserted from the outside of the head into a lamp fitting hole that is opened from the outside of the head in the direction of the nozzle axis and is provided in communication with the air pipe. A three-way dental syringe with a built-in illumination device according to claim 1, which is removably fitted. 3. An illumination switch is provided on the inside of the lever of the grip body, and an illumination switch is provided on the bottom side of the grip body that is substantially opposite to the lever, so that the illumination switch on the bottom side of the grip body and/or the illumination switch on the inside of the lever is provided. A three-way dental device with a built-in lighting device according to claim 1, which is a registered utility model and is capable of lighting up the lighting device when activated and supplying air and/or water by pressing a lever. Syringe. 4. Claim 1 of the Utility Model Registration Claim in which the illumination switch provided on the inside of the lever of the grip body and/or the illumination switch provided on the lower surface side of the grip body substantially opposite to the lever is of a momentary type; or The 3-way dental syringe with a built-in illumination device according to item 3. 5. Claim 1 of the Utility Model Registration Claim in which the illumination switch provided on the inside of the lever of the grip body and/or the illumination switch provided on the lower surface side of the grip body substantially opposite to the lever is of an alternate type; or The 3-way dental syringe with a built-in illumination device according to item 3.