JPH06510678A - Dental handpiece with image transmission device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Dental handpiece technology field with image transmission device The present invention is a dental handpiece connectable to a delivery tube and carrying a tool. Grip rotatable relative to the supply tube for securing the working part and an optical/image transmission device, and the grip part is connected to the transducer in a torsion-resistant manner. converts the image provided from the converter or image transmission device into an electrical signal and supplies it. one adapted to send it to at least one conductor extending along the tube It is related to

Background technology Endoscopes are used today in many medical specialties to examine difficult-to-reach body cavities. It is used as an important auxiliary means. After converting the obtained image into an electrical signal The possibility of enlarging the display via the television screen is a unique opportunity for imparting knowledge to students. It is also advantageous for communicating with patients. Forms an image on the image receiving surface Signals useful for this can additionally be used for documentation.

Is the treatment area originally visible?Dental instruments are also equipped with light and image transmission devices. This is easily conceivable from the above possibilities. In this case, the dentist will perform the surgery. Dental surgery can be performed while looking at the image receiving surface instead of looking directly at the area. This will result in particular advantages. Thus, bacterial contamination of physicians is essentially reduced. There will be.

Basically, proposals to use endoscopic methods in dentistry have already been made several dozen times ago. (see German Published Patent Application No. 2208902).

This proposal did not find a way to be put into practical use, but the reason is probably that According to the state of the art at the time, the image signal is transmitted in the form of light by an image receiver attached to the treatment table. Probably because they had to send it to the plane.

In response to this, recently a photoelectric converter has been installed inside the grip, and the signal is converted into an electric signal from there. (International Application Publication No. 9) No. 1,103,209 and US Pat. No. 5,049,070).

Disclosure of invention The disadvantage of this arrangement is that chemotherapy (alcohol) may be used for an excessively long time, especially if chemotherapy (alcohol) Do not use the autoclave for the hunt piece itself, as rubber parts such as the sole ring may be damaged. It can only be sterilized in-house. On the other hand, the CC currently used as a signal converter The D camera will be damaged in the autoclave. In contrast, in the present invention, The transducer is located at a location that is accessible from the outside of the grip and is removable from the grip. It is.

In the examples described below, various possibilities for making the transducer removable are shown. , in which case additionally light and image transmission devices, preferably installed in a common pipe, are also included. can be removably fixed to the handpiece along with the tube of Ru. The removability of the image transducer allows the use of the handpiece to be adapted to the invention. It is also advantageous insofar as it is possible without additional equipment.

Brief description of the drawing The application of the basic architecture of the present invention to handpieces of various configurations is described below. , will be explained based on some embodiments shown in the drawings.

Figure 1a shows a vertical longitudinal section and an accompanying cross-sectional view along the line 1-- 1b is a detailed view of the device shown in FIG. 1a, and FIG. 2a is a side view, partially in section, of the second embodiment. , FIG. 2b is a detailed view of the device shown in FIG. 2a, and FIGS. 3a and 3b are for another embodiment. 2a and 2b, and FIG. 4a is a side view showing a partially sectional view of the fourth embodiment. 4b is a detailed view thereof, and FIGS. 5a and 5b are FIGS. 4a and 5b for the fifth embodiment. A view corresponding to FIG. 4b, FIG. 6a an enlarged view of the end area of the grip 1, and FIG. 6b an attached FIG.

Preferred modes for carrying out the invention The dental handpiece shown in FIG. 1 has a bent grip 1, which grip can be selectively It can be combined with various working tools, and the tool consists of a neck part 14 and a head part 17, and It carries two rotating tools 15. The tool 15 is driven in the embodiment shown in FIG. This is done via a motor 5 which is supplied with driving air via a supply tube 3. It is configured as a rotary plate type pneumatic motor.

The supply tube 3 is rotatable relative to the grip portion 1 or its rear connecting fitting tube 22. Ru. On the other hand, the holder 12 of the light generation/image conversion section, which will be explained in detail below, is It must be arranged so that it cannot rotate relative to the folding grip part 1. This holder? If it protrudes above the cross section of the grip part 1 as in the case of the embodiment shown in FIG. You may need to move the holder as far toward the end of the hunt piece as possible. Thus, figure The arrangement shown is obtained, in this case the supply tube 3 held in the holder 12 or the elastic legs. The leg portion 7 allows the holder 12 to be easily attached and detached.

An incandescent lamp 10 arranged in a holder 12 feeds a light conductor 11, which is connected to a tube. 4 and terminates at the front end of the handle 1 in a manner that is clear from FIG. same tube 4 at the front end of the handpiece via a lens system known from conventional endoscopes. An image of the surroundings is sent to a converter 2, which is configured as a so-called CCD camera. In other words, it converts an optical image into an electrical signal. These signals are transmitted through the sliding contact 13 to the circumferential surface of the supply tube 3 and from there to the multi-core conductor 9, which conductor The lines lead to the computer through the supply tube 3, and the computer receives these signals. An image is constructed that can be stored or reproduced on a receiving surface.

As can be seen from FIG. 2 is also removably connected to the grip l and can be separated from the rest of the device. It can be sterilized by placing it in alcohol. For this purpose, tube 4 can be pulled out from the sleeve 18, and the holder 12 opens the legs 7 to open the supply channel. You can also remove the tube 3. By the way, the sleeve 23 is the supply tube 3 Since it is movable with respect to the grip part l, when it is assembled, the holder 12 and The torsion-resistant connection with the handle 1 is mediated by the tube 4.

The device shown in FIG. 2 is primarily configured as a motor 5 or an electric motor, and It differs from the one shown in FIG. 1 in that it is connected to the tab 3 in a torsion-resistant manner. twisted grip The rear end of the groove l completely surrounds the electric motor. Converter 2 and incandescent bulb 10 are like this is located within the rotating wheel 8, which continuously surrounds the supply tube 3. nothing. The removal of the transducer 2 assumed in FIG. This is done by removing the CCD camera from the installed receptacle. grip In this case, it is necessary to fix the rotary wheel 8 in case it rotates relative to the part l. This is done by a direct connection between the sliding part 1 and the rotating wheel 8, but of course also with a removable This is also done by tube 4.

The embodiment shown in FIG. 3 has only slight differences with respect to that of FIG. this is a standardized joint system, the so-called ISO joint.

The supply tube 3 and the motor housing 6 are in this case rotatable relative to each other. while using it , the casing 6 is rigidly connected to the grip l.

In this case, apart from the tube 4, the torsion-resistant fixation of the rotating wheel 8 is achieved by means of the casing 6. You can also intervene.

In the embodiment shown in FIG. 4, the casing 6 surrounding the motor is also rigidly connected to the grip 1. has been done. However, in this case, the rotating wheel including the transducer 2 has a sleeve 6 and a handle 1. The torsion-resistant fixation of the rotating wheel does not cause any problems. Rotation of conductors 9 with respect to each other The sliding contact between the possible parts is in this case not in the holder of the transducer 2, but on the other hand in the case. in the thing 6 and in the supply tube 3 on the other hand. The incandescent light bulb 10 is bent in the illustrated example. It is arranged in the grip part 1 and also in front of the CCD camera 2, and therefore one The tube 4 branches off to receive a light guide 11 on the one hand and an image transmission device on the other hand.

A ring 24 serving as a holder for the transducer 2 is non-rotatably fitted in a plug 25 and When inserted, the motor part will protrude into the grip part l.

Also in the embodiment shown in FIG. It is fitted between the motor casing 6 and the motor casing 6. But in this case supply tube 3 is firmly connected to the casing 6 and is permanently disposed within the casing 6. The rotating wheel 8 is arranged in such a way that the image transmitted through the tube 4 correctly hits the transducer 2, e.g. For example, it is held in place by the tube 4 and the bulb 10 placed in the handle 1. Must be. The required sliding joint is in this case the part surrounded by the sleeve 6. Minutes in front.

For some reason, the transducer 2 can be easily removed inside the rotating wheel 8 by means of a bayonet joint. If you do not want to fix it, you can simply remove the rotating ring 8 from the connecting pipe 25. would have to be done.

The image transmission device used is, □As already mentioned, □up to the technological level in the field of endoscopy. belong to Therefore, even in FIG. 6, only the sleeve 23 surrounding the lens system is shown. Ru. This lens system is arranged together with the light guide 11 in the tube 4, which tube is already As mentioned above, it is removable from the grip part 1. The light output shown in Figures 6a and 6b The firing point is near the front end of the grip part I, and at that point, the injection point is supplied through the conduit 19. The cooling air and the cooling water supplied through the conduit 20 are mixed to form a spray, which It ejects from the end of the grip l.

Claims (11)

[Claims] 1. A dental handpiece that can be connected to a supply tube and that carries a tool. a grip that is rotatable relative to the supply tube and a light ・Equipped with an image transmission device, the grip part is connected to the transducer in a twist-resistant manner, The converter converts the image provided by the image transmission device into an electrical signal and sends it to the supply tube. in which it is directed to at least one conductor extending along the , removably from the grip (1) at a location accessible from the outside of the grip (1); A handpiece characterized in that a transducer (2) is arranged. 2. The image transmission device includes a removable tube (4) extending along the handle (1). The handpiece according to claim 1, characterized in that: 3. A transducer (2) is installed in a spigot (25) which is connected to the handle (1) in a torsion-resistant manner. The handpiece according to claim 1 or 2, characterized in that the handpiece (Fig. 4 a, Fig. 4b). 4. a transducer (2) in a spigot (25) rotatably coupled to the handle (1); The hand according to claim 1 or 2, wherein the hand is rotatably arranged. piece (Fig. 5a, Fig. 5b). 5. A torsion-resistant connection between the handle (1) and the transducer (2) is provided by a tube (4). 5. The handpiece according to claim 4 (FIGS. 1a and 1b). 6. A sleeve (6) surrounding the motor (5) is firmly connected to the grip (1). and the transducer (2) is connected to the end of the sleeve opposite the supply tube (3). 5. The handpiece according to claim 4 (FIGS. 2a, 3a). 7. surrounding a grip (1) and a motor (5) rotatable relative to this; characterized in that a transducer (2) is arranged between the solder sleeve (6) and the solder sleeve (6). Handpiece according to claim 4 (Figs. 5a, 5b). 8. A transducer (2) is rotatably coupled to the handpiece via an elastic leg (7). The handpiece according to any one of claims 1 to 7, characterized in that: (Figure 1a, Figure 1b). 9. Claim characterized in that the transducer (2) is arranged in the rotating wheel (8) Handpiece according to any one of boxes 1 to 7 (Figures 5a, 5b). 10. Particularly, the transducer (2) is connected to the rotary wheel (8) via a bayonet joint. 10. A handpiece according to claim 9, characterized in that it has the following characteristics (FIG. 5a). 11. Claim 9, characterized in that the rotating wheel (8) is removable. Handpiece (Figure 5b).