JP2018094220A - Tip and dental treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tip, even when the tip is removed, preventing leakage of polluted water to the inside of a handpiece, and a dental treatment apparatus.SOLUTION: The tip that is mountable on a handpiece including a vibration source and is insertable into a treatment site is provided. The tip includes: a tip body 31 having a cylindrical part; a discharge path 40 formed inside the tip body for injecting unused liquid from a first tank to the treatment site; a suction path 50 for discharging the used liquid sucked from the treatment site to the second tank; and a wall part 34 formed inside the tip body for delimiting the discharge path and the suction path. The suction path includes a suction-path outlet 52 formed outside the tip body for being connected to the second tank.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a tip and a dental treatment device, and more particularly to a tip and a dental treatment device that can be attached to a handpiece containing a vibration source and can be inserted into a treatment site.

  Periodontal disease is said to cause not only thinning of gums but also diseases of organs such as lungs and heart. Periodontal disease treatment includes removal of tartar and plaque (scaling) (scaling), smoothing of the root surface after scaling (root planing), and so on. For example, there is an operation (irrigation) for cleaning a periodontal pocket.

  The chip is configured in a shape that meets each purpose such as scaling, route planing, and irrigation. For example, Patent Documents 1 and 2 disclose a structure of a dental treatment apparatus having a chip applicable to irrigation, and discharge for injecting a liquid medicine for sterilizing the oral cavity toward a periodontal pocket. A suction path for sucking contaminated water from the path and periodontal pocket is formed.

JP 2012-223243 A JP, 2006-504160, A

However, in the structure of Patent Document 1 above, in addition to the discharge path, a suction path is also installed inside the handpiece of the dental treatment apparatus, and the used liquid (suctioned via a tip) is inserted into the handpiece. Contaminated water) tends to remain. Specifically, for example, when the chip, handpiece, hose, or the like is removed to sterilize the chip, contaminated water remaining inside the chip or hose may leak into the handpiece.
Further, in the structure of Patent Document 1, the suction path is provided inside the vibrator, and the discharge path is provided outside the vibrator. Therefore, it is difficult to cool the vibrator. The suction path (suction needle) of Patent Document 2 is formed separately from the chip, and the structure of the chip is complicated, resulting in poor productivity.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a tip and a dental treatment apparatus that do not allow contaminated water to leak into the handpiece even when it is removed.

  In order to solve the above-mentioned problem, the invention of claim 1 is a chip that can be attached to a handpiece incorporating a vibration source and can be inserted into a treatment site, and a chip body having a cylindrical portion, and the chip A discharge passage formed inside the main body for injecting unused liquid from the first tank toward the treatment site and draining used liquid sucked from the treatment site toward the second tank A suction path for forming the discharge path and the suction path, and the suction path is formed outside the chip body. It has a suction path outlet for connection to the tank.

  According to a second aspect of the present invention, in the first aspect of the invention, the discharge path has a discharge path outlet formed in the chip body, and the discharge path outlet is in relation to the longitudinal axis of the chip body. It is provided in the position on the opposite side of the said suction path exit.

  According to a third aspect of the present invention, the chip of the first or second aspect of the invention, the handpiece to be mounted on the chip, and the unused liquid are formed so as to be stored, and a flow path inside the handpiece is formed. The first tank connected to the discharge path of the chip via the first tank and the used liquid can be stored and connected to the suction path of the chip via a channel outside the handpiece. It is a dental treatment apparatus provided with the second tank.

  According to the present invention, since the suction path outlet is connected to the second tank outside the chip body, the used liquid sucked from the treatment site is drained to the second tank without passing through the inside of the handpiece. Is done. Therefore, even when the chip or the like is removed, the used liquid can be prevented from leaking into the handpiece.

It is a schematic block diagram of the dental treatment apparatus which concerns on one Embodiment of this invention. It is principal part sectional drawing of the dental treatment apparatus shown in FIG. It is a perspective view of the chip | tip shown in FIG. (A) is a top view of the chip | tip shown in FIG. 3, (B) is a BB sectional view taken on the line of (A).

Hereinafter, the chip and the dental treatment apparatus of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a dental treatment apparatus according to an embodiment of the present invention.
The dental treatment apparatus 1 includes a handpiece 10, a water tank 20, a drainage tank 25, and a tip 30. The water tank 20 corresponds to the first tank of the present invention, and the drain tank 25 corresponds to the second tank of the present invention.

In the water tank 20, unused liquid (for example, a chemical solution for sterilizing the oral cavity, hereinafter referred to as a chemical solution) is stored, and a water injection pump 21 is installed. The water tank 20 is connected to the handpiece 10 via a water injection hose 22.
A drainage pump 26 is installed in the drainage tank 25 and can store a used liquid (hereinafter referred to as contaminated water) at a treatment site (for example, a periodontal pocket or a root canal). The drain tank 25 is connected to the chip 30 via a drain hose 27 disposed outside the handpiece 10.

The water injection pump 21 and the drainage pump 26 are driven based on a signal from a control unit (not shown) of the dental treatment apparatus 1.
The water injection pump 21 pours the chemical in the water tank 20 to the treatment site via the water supply hose 22, the handpiece 10, and the flow path inside the chip 30 at a predetermined timing. On the other hand, the drainage pump 26 passes the contaminated water used at the treatment site at a predetermined timing accompanying the operation of the water injection pump 21 via the flow path outside the tip 30 or the handpiece 10, for example, the drainage hose 27. Collect in drain tank 25. In addition, it may replace with the drain tank 25 and the drain hose 27, and may connect to an intraoral vacuum.

2 is a cross-sectional view of a main part of the dental treatment apparatus shown in FIG.
The handpiece 10 has a built-in vibrator 11. A vibrating body 12 is installed at the front end of the vibrator 11, and a power line 13 extends from the rear end of the vibrator 11. The vibrator 11 is, for example, an ultrasonic vibrator or an air vibrator. The vibrator 11 and the vibrating body 12 are formed in a hollow shape, for example, and a shaft hole (not shown) having a female screw portion is formed at the front end of the vibrating body 12 to fix the chip 30 with screws.

  Inside the vibrator 11 and the vibrator 12, a flow path by the water injection tube 14 is provided. One end of the water injection tube 14 communicates with the water injection hose 22, the other end of the water injection tube 14 communicates with, for example, the shaft hole of the vibrating body 12, and the chemical solution in the water tank 20 is transferred to the tip 30 via the water injection tube 14. Water is poured. Thus, if the flow path (discharge path) from the water tank 20 is formed inside the vibrator 11 and the vibrating body 12, the vibrator 11 and the vibrating body 12 can be easily cooled.

  The handpiece 10 is driven based on a signal from the control unit of the dental treatment apparatus 1. The vibrator 11 vibrates at a predetermined timing, and the vibration of the vibrator 11 is amplified by the vibrator 12 and transmitted to the chip 30. At the treatment site, vibration in the chemical solution is generated, and fine negative pressure bubbles are generated around the tip of the tip 30. The biofilm can be destroyed by the energy generated when the bubbles burst.

FIG. 3 is a perspective view of the chip shown in FIG. 4A is a plan view of the chip shown in FIG. 3, and FIG. 4B is a cross-sectional view taken along line BB in FIG. 4A.
The chip 30 is a chip for irrigation, for example, and includes a cylindrical chip body 31. The chip body 31 is made of, for example, metal or resin, and a male screw portion 33 is formed at the rear end of the chip body 31.

A discharge path 40 and a suction path 50 are formed inside the chip body 31.
As shown in FIG. 4B, the discharge path 40 includes a large diameter portion 40a and a small diameter portion 40b. The large diameter portion 40a extends along the longitudinal axis of the chip body 31, and the small diameter portion 40b It extends in a direction intersecting this axis.

  One end of the large-diameter portion 40a has a discharge passage inlet 41 that receives the chemical solution from the water injection tube 14 in the shaft hole of the vibrating body 12 described in FIG. The other end of the large-diameter portion 40a communicates with one end of the small-diameter portion 40b, and the other end of the small-diameter portion 40b has a discharge passage outlet 42 that opens toward the tip of the suction passage 50. In addition, the discharge path outlet 42 can be opened so that the drug solution is directed directly to the treatment site, or so that the drug solution contacts the suction path 50.

  The suction path 50 includes a small diameter portion 50a, a relay chamber 50b, and a large diameter portion 50c. The small-diameter portion 50a is formed by a portion extending along the longitudinal axis of the chip body 31, a curved portion, and a portion extending in a direction intersecting with the axis. One end of the small diameter portion 50a has a suction path inlet 51, and the suction path inlet 51 is inserted into the treatment site. The other end of the small diameter portion 50 a communicates with the relay chamber 50 b inside the chip body 31.

The relay chamber 50 b is installed in the vicinity of the small-diameter portion 40 b of the discharge path 40, and the wall portion 34 partitions the relay chamber 50 b and the small-diameter portion 40 b of the discharge path 40.
One end of the large-diameter portion 50c of the suction path 50 communicates with the relay chamber 50b, and the large-diameter portion 50c extends along the radial direction of the chip body 31 and protrudes from the outer peripheral wall 32 of the body. The large-diameter portion 50c is curved outside the outer peripheral wall 32 along the longitudinal axis of the chip body 31, and the other end of the large-diameter portion 50c is the drainage hose described in FIG. 27 has a suction passage outlet 52 for connection to the terminal 27.

  Thus, the discharge path 40 and the suction path 50 are partitioned by the wall 34, and the chemical solution and the contaminated water are not mixed inside the chip body 31. Further, since the suction path outlet 52 is connected to the drainage tank outside the main body outer peripheral wall 32 of the chip body 31, the contaminated water sucked from the treatment site does not pass through the inside of the handpiece, but the drainage tank. It is drained directly. Therefore, even when the chip or the like is removed, the used liquid can be prevented from leaking into the handpiece.

Further, since the suction path 50 (small diameter portion 50a, relay chamber 50b, large diameter portion 50c) is integrally formed with the chip 30, the structure of the chip is simplified and the productivity is good.
In addition, since the discharge path 40 is not provided at the tip of the tip 30 and only the suction path 50 is provided, the visual field of the operator is not narrowed and the treatment site can be easily confirmed.
Further, the discharge path outlet 42 and the suction path outlet 52 are respectively provided at positions facing each other across the longitudinal axis of the chip body 31 so as to be separated from the lower side and the upper side of the chip body 31. Even if contaminated water remains in the vicinity of the road exit 42, the contaminated water is not directed toward the suction path outlet 52.

  And if the above-mentioned chip | tip is mounted, the dental treatment apparatus with which contaminated water does not leak from the inside of a handpiece can be provided.

DESCRIPTION OF SYMBOLS 1 ... Dental treatment apparatus, 10 ... Handpiece, 11 ... Vibrator, 12 ... Vibrating body, 13 ... Power line, 14 ... Water injection tube, 20 ... Water tank, 21 ... Water injection pump, 22 ... Water injection hose, 25 ... Waste water Tank, 26 ... Drain pump, 27 ... Drain hose, 30 ... Chip, 31 ... Chip body, 32 ... Body outer peripheral wall, 33 ... Male thread part, 34 ... Wall part, 40 ... Discharge passage, 40a ... Large diameter part, 40b DESCRIPTION OF SYMBOLS ... Small diameter part, 41 ... Discharge path inlet, 42 ... Discharge path exit, 50 ... Suction path, 50a ... Small diameter part, 50b ... Relay chamber, 50c ... Large diameter part, 51 ... Suction path inlet, 52 ... Suction path exit.

Claims (3)

A chip that can be attached to a handpiece containing a vibration source and can be inserted into a treatment site,
A chip body having a cylindrical portion;
A discharge path formed in the tip body for injecting unused liquid from the first tank toward the treatment site;
A suction path for draining the used liquid sucked from the treatment site toward the second tank;
A wall portion that is formed inside the chip body and divides the discharge path and the suction path;
The chip, wherein the suction path is formed outside the chip body and has a suction path outlet for connection to the second tank. The discharge path has a discharge path outlet formed in the chip body;
2. The chip according to claim 1, wherein the discharge path outlet is provided at a position opposite to the suction path outlet with respect to the longitudinal axis of the chip body. The chip according to claim 1 or 2,
The handpiece attached to the tip;
The first tank formed to be capable of storing the unused liquid and connected to the discharge path of the chip via a flow path inside the handpiece;
A dental treatment apparatus comprising the second tank capable of storing the used liquid and connected to the suction path of the chip via a flow path outside the handpiece. .

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