JPH034256Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a dental suction and drainage device in which a vacuum syringe is attached to the tip side.
In particular, the present invention relates to a dental suction and drainage device in which a vacuum syringe is automatically switched.

(Prior art) Conventionally, dental suction and drainage devices have become popular, in which a cylindrical vacuum syringe is hung and attached to a holder with a C-shaped cross section that protrudes from the dental spittoon unit or the backrest of the dental chair. When using the vacuum syringe, the assistant removes the vacuum syringe from the holder, operates the hand switch installed on the side of the vacuum syringe, and inserts it into the piping box on the proximal end of the vacuum syringe. The dental suction and drainage device was operated by driving a pressure reducing device such as a pressure reducing pump or aspirator housed in the dental equipment.

In this dental suction and drainage device, a flexible tube is connected between the two to apply the suction force of the pressure reducing device to the vacuum syringe on the distal end side, and after driving the pressure reducing device, the vacuum syringe is By inserting the distal side of the into the patient's mouth,
It suctions and discharges dirt such as water, cutting dust, saliva, etc. spouted from the handpiece that accumulates in the patient's mouth during dental treatment, and removes these dirt from the patient's mouth, making it easier and more accurate for the operator to perform the work. can do.

Another type of dental suction and drainage device is similar to the dental suction and drainage device described above, in which a vacuum syringe is hooked onto a dental spittoon unit or a holder with a C-shaped cross section that protrudes from the backrest. The holder has a built-in micro switch, and when an assistant removes the vacuum syringe from the holder during use, the micro switch releases a spring piece, etc. The vacuum syringe is mechanically switched and turned "on" by the action of the vacuum syringe, and the vacuum syringe enters an operating state in which reduced pressure is applied.

This operating state is transmitted to a drive controller within the pressure reduction device by a conductive wire wired between the holder and the pressure reduction device of the dental suction and drainage device, and the pressure reduction device is driven.

This dental suction and drainage device has a flexible tube connected between the two to transmit the reduced pressure and suction force of the pressure reducing device driven on the proximal end side to the vacuum syringe on the distal end side. After driving the device, when the distal end of the vacuum syringe is inserted into the patient's mouth, it will suck out the waste such as water, cutting dust, saliva, etc. spouted from the handpiece that has accumulated in the mouth during dental treatment. Thus, dirt can be removed from the patient's mouth, allowing the surgeon to perform the work easily and accurately.

(Problem to be solved by the invention) However, in the former dental suction and drainage device, which is equipped with a hand switch on the side of the vacuum syringe, after the assistant removes the vacuum syringe from the holder, The pressure reducing device of the dental suction and drainage device cannot be activated or stopped unless the hand switch equipped on the vacuum syringe is operated each time. Therefore, in order to operate the former dental suction and drainage device, compared to the latter dental suction and drainage device, an artificial action such as "turn on the switch" is required. I have also heard that there is a one-tempo delay in the operating procedure.

In addition, the vacuum syringe is sometimes exposed to water droplets, and if the hand switch is installed in such a place, there is a risk of accidents such as water seeping in from this part and causing corrosion or electric shock. This is a problem in terms of safety and durability.

On the other hand, with the latter type of dental suction and drainage device in which a micro switch is attached to the holder, the switch of the dental suction and drainage device can be operated at locations other than specific holder settings such as the spittoon unit or backrest where the microswitch is attached in advance. It can be carried out.

In particular, there are many surgeons who claim that ``It would be inconvenient if there was no place on the backcrest side in addition to the dental spittoon unit side to operate the switch for the dental suction and drainage device.'' There has been a desire for a dental suction and drainage device that allows for easy movement of the holder and automatic switch operation.

(Means for solving the problem) The present invention was made in view of the above points, and the holder can be moved to any position, and when the vacuum syringe is removed from the holder, suction is automatically drawn into the vacuum syringe. A dental suction and drainage device on which force is applied is provided, that is, a vacuum syringe, a pressure reducing device, a flexible tube connecting the vacuum syringe and the pressure reducing device, and a holder for hanging the vacuum syringe. In the dental suction and drainage device, a magnet is attached to the inner peripheral edge of a holder having a C-shaped cross section, a reed switch is disposed on the cylindrical wall of the vacuum syringe, and a reed switch is provided on the cylindrical wall of the vacuum syringe. By providing and configuring a reduced pressure load control means that controls the application of reduced pressure to the vacuum syringe by opening and closing, when the vacuum syringe hooked to the holder is removed, the reed switch is activated. Dental suction drainage characterized in that a reduced pressure is applied to the vacuum syringe, and when the vacuum syringe is hooked to the holder, the application of reduced pressure to the vacuum syringe is stopped. It is a device.

(Embodiment) An embodiment of the dental suction and drainage device of the present invention will be specifically described below based on the drawings.

Fig. 1 is a partially cutaway side view of the vacuum syringe and assistant holder on the distal end side of the dental suction and drainage device of the present invention, and Fig. 2 is a cross-sectional view taken along line A-A' in Fig. 1. FIG. 3 shows an overall view of the dental suction and drainage device in which the vacuum syringe on the distal end side is locked to the assistant holder of the dental spittoon unit.

As shown in FIG. 3, the dental suction and drainage device of the present invention mainly includes a pressure reducing device 2 such as a pressure reducing pump housed in a piping box 1, a vacuum syringe 3 serving as a suction port for the vacuum syringe, and the pressure reducing device. The flexible tube 4 connects the vacuum syringe 2 and the vacuum syringe 3, and the holder 5 hooks and stores the vacuum syringe 3.

As shown in FIG. 1, the vacuum syringe 3, which serves as the suction port of the dental suction and drainage device of the present invention, has a rubber tip 6 attached to its tip so as not to damage the inside of the patient's mouth when inserted into the patient's mouth. When this vacuum syringe 3 is inserted into the patient's mouth, it is placed between the rubber tip 6 and the vacuum syringe main body 7 so as not to interfere with the operator's operation.
A joint portion 8 bent by about 120 degrees is connected. Furthermore, since the vacuum syringe body 7 itself in front of the vacuum syringe 3 is slightly bent on the distal end side, the entire bend between the larch tip 6 and the vacuum syringe body 7 is approximately at right angles. It's on.

In order for the inner hole 7a on the proximal end side of the vacuum syringe main body 7 to connect with the inner hole 4a on the distal end side of the flexible tube 4, the inner holes 7a, 4a are provided in both inner holes 7a, 4a. A connecting tube 9 having both ends fitted therein is provided inside. Two normally closed contact type (B contact type) reed switches 11a are installed in a gap 10 created by covering a part of the recess 9a formed on the outer periphery of the connecting tube 9 with the flexible tube 4. , 11b are arranged horizontally.

Further on the outside of the flexible tube 4, the distal end portion is screwed into a male screw portion 7b carved on the outer periphery of the proximal end side of the vacuum syringe main body 7, and
A cylindrical locking cover 12 made of plastic covers the connection between the connecting tube 9 and the flexible tube 4 on the base end side.

Furthermore, the two reed switches 11a, 11
The reed switches 11a and 11b are connected in series, and connecting leads are connected to the reed switches 11a and 11b.
The connecting conductor passes through the inner side of the reinforcing coil 13 in the wall of the flexible tube 4 to drive and control a pressure reducing device 2 such as an aspirator or a pressure reducing pump disposed at the proximal end side of the dental suction and drainage device. The pressure reducing device 2 can be driven and stopped by turning on and off a pressure reducing device drive switch in the drive controller 2a.

In this embodiment, the drive controller 2a of the pressure reducing device 2 is controlled as the pressure reduction load control means for applying reduced pressure to the vacuum syringe 3, but a solenoid pressure reduction valve may be controlled. Specifically, the reed switch 1
The connecting wires from 1a and 11b are connected to a solenoid valve attached to the pressure reducing pipe line of the pressure reducing device 2, and by turning the solenoid valve "on" and "off", suction force is applied to the vacuum syringe 3. may be made to act.

When the vacuum syringe 3 is not in use, it is stored in a holder 5 having a C-shaped cross section that is fixed to a support rod 16 protruding from the dental spittoon unit 14 or the backrest 15. However, when it is used, the assistant is removed from the holder 5.

The holder 5 has a cross section C having a longitudinal groove 5a into which the flexible hose 4 can be inserted from the side surface so that the vacuum syringe 3 can be easily hung after use. It has a letter-shaped cylindrical body, and a flange 5b is formed inside at the bottom of the cylindrical body. Therefore, when hooking and storing the vacuum syringe 3 on the holder 5, lift the vacuum syringe 3,
After inserting the flexible hose 4 through the groove 5a on the side of the holder 5, lower the vacuum syringe 3 with the flexible hose 4 still inserted into the cylinder of the holder 5, and insert the flexible hose 4 into the cylinder of the holder 5. Insert the vacuum syringe 3 inside. Then, the proximal end side of the hanging cover 12 of the vacuum syringe 3 is brought into contact with the flange 5b of the holder 5 to support the vacuum syringe 3 from below.

On the other hand, at the inner upper part of the cylindrical body of the holder 5, there is a strong magnet 17 with a U-shaped cross section on the inner circumference.
is attached.

Therefore, when the vacuum syringe 3 is hung on the holder 5, the reed switches 11a, 11
The contact point b is brought into the "open" state by the magnetic force of the magnet 17 of this holder 5. Then, the pressure reducing device drive switch in the drive controller 2a of the pressure reducing device 2 of the dental suction and drainage device is set to the “off” state to stop the drive of the pressure reducing device 2 of the dental suction and drainage device.

Furthermore, when the vacuum syringe 3 is removed from the holder 5, the reed switches 11a and 11b disposed on the vacuum syringe 3 are separated from the magnetic field of the magnet 17 of the holder 5, and their contacts return to the "closed" state again. do. And drive controller 2
Turn on the pressure reducing device drive switch in a to drive the pressure reducing device 2 of the dental suction and drainage device. As a result, the dirt accumulated in the mouth can be sucked and removed from the rubber tip 6 at the most distal end of the vacuum syringe 3.

Once the vacuum syringe 3 is hooked to the holder 5 again, the pressure reducing device drive switch in the drive controller 2a is turned to the "off" state, and the driving of the pressure reducing device 2 of the dental suction and drainage device is stopped. becomes.

In this way, attach Vacuum Syringe 3 to Holder 5.
The dental suction and drainage device can be automatically driven and stopped simply by hooking or removing it. Further, since the holder 5 is only equipped with the magnet 17 and no connecting wire is wired, the holder 5 can be freely moved to an appropriate position for use. Further, the reed switches 11a and 11b of the vacuum syringe 3 are sealed in glass tubes and are water resistant, so that even if water droplets hang onto the vacuum syringe 3, they will not be damaged.

By the way, no matter how the vacuum syringe 3 is hung on the holder 5, the reed switch 1
It is necessary that 1a and 11b be activated to be in the "off" state. However, the reed switch 11a installed inside the vacuum syringe 3
If only one is installed, holder 5
The reed switch 11a will not operate depending on the installation direction of the vacuum syringe 3 that is hooked to the reed switch 11a. That is, if the reed switch 11a installed inside the vacuum syringe 3 is placed at a location on the groove 5a side of the holder 5 where the magnet 17 is not attached, the magnetic field of the magnet 17 may not be applied to the reed switch 11a. . As a means to solve this problem, it is proposed that two or more reed switches 11a, 11b be provided diagonally. In this way, if two or more reed switches 11a, 11b are provided in parallel and connected in series, even if one is placed in the groove 5a, the other one is placed on the magnet 17 side, so both The contacts of the reed switches 11a and 11b of the dental suction and drainage device are not in the "closed" state, and the pressure reducing device drive power switch in the drive controller 2a is turned "off", and the pressure reducing device 2 of the dental suction and drainage device is turned off. Drive can be stopped.

(Effects of the invention) As described in detail in the examples above, the dental suction and drainage device of the present invention is automatically switched on simply by removing the vacuum syringe from the holder. Since the switch is automatically turned off just by hooking it to the holder, the vacuum pump will not operate unless the assistant operates the hand switch one by one after removing it from the holder. I've never been one tempo behind.

In addition, even if water droplets are splashed on the vacuum syringe, there is no fear that the switch portion will corrode or that water will penetrate and cause accidents such as electric shock, so it is excellent in terms of durability and safety.

The holder can be freely moved to any position and used.

In this way, the present invention is very useful and excellent, and will make a great contribution to this field.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view of the vacuum syringe and holder at the tip of the dental suction and drainage device of the present invention, and Fig. 2 is a cross-sectional view taken along line A-A' in Fig. 1; Figure 3 shows an overall view of the dental suction and drainage device. 1... Piping box, 2... Pressure reducing device, 2a...
...Drive controller, 3... Vacuum syringe, 4...
...Flexible tube, 5... Holder, 5a... Groove, 5b... Flange, 6... Rubber tip, 7...
Vacuum syringe body, 8...joint part,
9...Connection tube, 10...Gap, 11a, 11b
... Reed switch, 12 ... Latch cover, 13
... Reinforcement coil, 14 ... Dental spittoon unit, 15 ... Back crest, 16 ... Support rod,
17...Magnet.

Claims (1)

[Claims for Utility Model Registration] (1) Comprising a vacuum syringe, a pressure reducing device, a flexible tube connecting the vacuum syringe and the pressure reducing device, and a holder for hanging the vacuum syringe. In the dental suction and drainage device, a magnet is attached to the inner peripheral edge of a holder having a C-shaped cross section, and a reed switch is provided on the cylindrical wall of the vacuum syringe, and the vacuum syringe is opened and closed by opening and closing the reed switch. By providing a reduced pressure load control means for controlling the application of reduced pressure to the vacuum syringe, when the vacuum syringe hooked to the holder is removed, the reed switch is activated. A dental suction and drainage device, characterized in that when reduced pressure is applied and the vacuum syringe is hooked to the holder, the application of reduced pressure to the vacuum syringe is stopped. (2) The dental suction and drainage device according to claim 1, which is a registered utility model, characterized in that a plurality of reed switches are disposed on the cylindrical wall of the vacuum syringe. (3) The dental suction and drainage device according to claim 1 or 2, wherein the reed switch is a B contact type, and a plurality of reed switches are connected in series.