KR20160033628A - Dental treatment system having multi-wavelength laser applying handpiece - Google Patents

Abstract

According to an embodiment of the present invention, an oral cavity treatment system including a multi-wavelength laser emitting hand-piece includes: a power supply unit generating driving power; multiple laser diodes which generates laser beams of a unique wavelength as the driving power is applied; a switching circuit which controls the driving powder to be applied to one of the laser diodes; multiple optical fibers transmitting each laser beam generated by the laser diodes; a coupling unit integrating the optical fibers to a single optical fiber; the single optical fiber transmitting the respective laser beams transmitted through the coupling unit; and the hand-piece held by an operator and including a focusing lens optical structure unit receives the laser beam from the single fiber on a side and emits the laser beam to the treatment target tissue through the other end.

Description

TECHNICAL FIELD [0001] The present invention relates to a dental treatment system having a multi-wavelength laser irradiation handpiece,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a system for treating an oral cavity with a multi-wavelength laser irradiation handpiece, and more particularly, .

In the case of a dental laser therapy apparatus, the use of a drill engine and the ability to relieve tension and pain caused by a contact procedure can be a great advantage. However, due to the characteristics of the dental medical device, it is necessary to use a high-power laser and it is disadvantageous that the damage of the tissue caused by the laser may occur in the treatment.

Particularly, there is a need to apply different laser beams by different light sources at the same time, since lasers used for teeth, which are hard tissues in the oral cavity, and gums used for soft tissues, etc., must have different powers.

On the other hand, a general laser system is designed to be able to irradiate only a laser of a single wavelength through a handpiece, so that a practitioner uses a specific handpiece which irradiates a laser specialized on the teeth when irradiating the teeth with a laser, Another specific handpiece for irradiating the gum-specific laser had to be used. This is an inconvenience to the practitioner and the patient, and also causes a problem of having a plurality of handpieces.

In order to solve the above-mentioned problems, it is an object of the present invention to provide an oral treatment system configured to selectively irradiate laser beams of various wavelengths through a single handpiece.

According to an aspect of the present invention, there is provided an oral care system including a multi-wavelength laser irradiation handpiece, comprising: a power supply for generating an operating power; A plurality of laser diodes, a switching circuit for controlling operation power to be applied to any one of the plurality of laser diodes, a plurality of optical fibers for transmitting respective lasers oscillating in a plurality of laser diodes, A coupling section for coupling the optical fiber into one optical fiber; a single optical fiber for transmitting each laser beam transmitted through the coupling section; and a handpiece configured to be held by a practitioner, And irradiates a laser beam toward the target tissue through the other side end And a focusing lens optical structure for focusing the light beam on the focusing lens.

Further, the focusing lens optical structure may be configured to control the size and the output of the spot of the laser beam irradiated to the tissue, by manual operation of the operator or by a predetermined control signal.

Further, the switching circuit can control to oscillate the respective laser beams simultaneously in two or more laser diodes.

The plurality of laser diodes may be a laser of a wavelength band of 532 nm, a blue laser and a green laser of a visible light region, a laser of an 800 nm or 900 nm band of an infrared region, argon (Ar), helium-neon (He- AlGa, AlGaAs, Nd: YAG, Ho: YAG, Er, Cr: YSGG, Er: YAG, And the like.

According to the oral care system having the multi-wavelength laser irradiation handpiece according to the present invention, since the laser beam for oral treatment having different wavelengths can be selectively irradiated from one handpiece, Not only enhances the therapeutic effect but also improves the operator's convenience.

Further, by irradiating two or more laser beams at the same time, a composite and elevated effect by various laser beams can be obtained.

In addition, since various laser beams can be irradiated using a single handpiece, the cost of constructing a laser system for oral treatment is reduced.

FIG. 1 is a schematic view showing a basic structure and fiber configuration of an oral care system having a multi-wavelength laser irradiation handpiece according to an embodiment of the present invention. Referring to FIG.
FIG. 2 is a block diagram for explaining a configuration of a system for oral treatment with a multi-wavelength laser irradiation handpiece according to an embodiment of the present invention.
3 is a view showing the construction of the handpiece in more detail in the oral care system having the multi-wavelength laser irradiation handpiece according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout. In the following description of the present invention, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the technical scope of the present invention. Will be.

FIG. 1 is a schematic view showing a basic structure and fiber configuration of an oral care system having a multi-wavelength laser irradiation handpiece according to an embodiment of the present invention. Referring to FIG.

INDUSTRIAL APPLICABILITY The present invention can be applied to a medical laser system capable of treating periodontal disease or dental hypersensitivity using laser beams of various wavelengths.

Referring to the drawing, a laser beam emitted from a laser module passes through a fiber 150 and reaches an oral treatment handpiece 110. A focusing lens optical structure 120 is disposed on the handpiece 110. The laser beam having passed through the optical lens structure 120 is finally irradiated onto a target tissue (e.g., a tooth or a gum) through the crystal tip 130. [

In the multi-wavelength laser system according to the present invention, a plurality of laser modules are provided. Three modules 101, 102 and 103 are shown in the figure. Each laser module can oscillate a laser beam having wavelengths of lambda 1, lambda 2 and lambda 3, respectively. The oscillated laser beam is incident on each optical fiber. Here, the use of three laser beams is merely an example, and it is also possible to use laser beams of two or four or more different wavelengths.

In the meantime, the multi-wavelength laser system according to the present invention can be realized by a switching means (for example, as shown in Fig. 2 (b)) so that a practitioner can select and oscillate a laser beam of any one (or two or more) The switching circuit 230 of FIG.

Each of the optical fibers is integrated in the 3-1 coupling portion 108. 3-1 The coupling part 108 is a structure for coupling the three optical fibers together as shown in the figure and transmitting the laser beam transmitted through each fiber (three fibers) through one fiber 150.

3-1 The coupling portion 108 is connected to the oral handpiece 110. A crystal tip 130 is disposed at a distal end of the oral handpiece 110 toward a treatment region and a focusing lens optical structure 120 is disposed inside the handpiece 110.

The focusing lens optical structure unit 120 controls the size of the spot when the laser beam is irradiated to the tissue through the crystal tip 130, the concentration of the laser beam, and the like.

In addition, the focusing lens optical structure unit 120 may be provided with a filter or diaphragm (not shown) for transmitting or blocking a laser beam of a specific wavelength, so that it is possible to irradiate only a desired laser beam.

The practitioner can selectively operate the desired laser module or control the operation of the focusing lens optical structure 120 to selectively irradiate the desired laser beam and proceed with the procedure using the selected laser beam.

As described above, since the plurality of laser beams can be selected and irradiated using one handpiece 110, the laser system according to the present invention is capable of irradiating only one laser beam, Piece laser system.

In addition, since two or more lasers can be simultaneously selected and irradiated to the tissue, a complex medical effect by various laser beams can be expected.

The laser beam used for dentistry is mainly used at 532 nm (dentin hypersensitivity reduction), 808 nm (periodontitis, hard tissue treatment, for gingival incision) and 450 nm (for tooth whitening and resin curing).

In recent years, visible light and infrared laser coupling techniques have been developed. And multi - wavelength lasers have been applied for various treatment lesions. Meanwhile, in order to effectively operate the multi-wavelength laser, characteristics of energy loss due to wavelength or output are analyzed and at least one laser is combined to realize the minimization of the number of output fibers.

A blue-green laser in the visible light region output from the laser module, and an 800-900 nm band laser in the infrared region are coupled to a photo coupler (e.g., a 3-1 coupling system) coupling and combining functions. (See FIG. 2), so that they are integratedly transmitted through one optical fiber and irradiated through one handpiece. This minimizes the handpiece connected to the laser system.

In the 3-1 coupler, a laser beam of blue, green, 800 nm, or 900 nm band is used, and when each fiber has a diameter of 2 mm, one end is composed of 2 mm 3 core fibers in which three fibers of each laser beam are combined And the opposite end can be configured as a single core fiber through a lens focuser (not shown). This configuration should be adjusted to minimize coupling loss and optical loss of the laser beam.

Using the three-core SMA fiber branch coupler designed and manufactured in this way, efficient laser coupling can be realized by combining the visible rays, the infrared rays, or the respective beams in a complex manner.

On the other hand, the wavelength of the laser used in the dental region belongs to most visible light and infrared regions, and includes Ar, He-Ne, AlGa, AlGaAs, Nd: YAG (Ho: YAG), erbium chromium YSGG (Er, Cr: YSGG), erbium yag (Er: YAG), and carbon dioxide (CO2) laser. The lasers exhibit a painless, anti-inflammatory, and sterilizing cleaning effect and are being applied to a variety of treatments such as whitening, incision, periodontal treatment, biopsy, neuropathy, treatment with rhinorrhea, cavity formation, pigment removal, and periplasmic implant.

On the other hand, when a laser beam is used for dental treatment, it is preferable that the laser beam can be applied to a treatment area in a short time, and multi-functional, multi-wavelength, multi-output is possible. In particular, it can be irradiated to various parts of the teeth (gums, crown, root, etc.) at various angles by various forms of beams or LEDs, so that it is necessary to be able to irradiate between the teeth, the periodontal pouch, and the teeth.

This dental treatment using laser is performed with the treatment of soft tissue and hard tissue, the treatment area is narrow, and each kind of treatment has to adjust the appropriate wavelength and light intensity by interaction with the light source, It is possible to expect the greatest therapeutic effect, and it is possible to reduce the space occupation and reduce the cost by the system.

Here, securing of a semiconductor-laser light source of stable output, optimization of a system including a handpiece and a light source, and miniaturization can be achieved.

The laser beam at the 532 nm wavelength exhibits an additional analgesic effect, which acts by blocking the C and AB fibers by changing the terminal end of the sensory nerve axon by the laser.

The laser beam at 808 nm wavelength is used for gingival incision, periodontal treatment and hard tissue treatment (dental caries, implants, etc.). High power (5 ~ 10W) 808nm wavelength laser beam is used for gum incision. Adjustment of the spot size for the gingival incision is necessary. (For example, the diameter of the beam is 0.5 to 5 mm). It is desirable to add miniaturization and automatic recognition of the handpiece, and detachment / attachment function of the various tips by angle. By adding a collimate function to the handpiece, simple procedures can be realized. Diagnosis, prevention, elimination of dental caries (tooth decay), enamel quality, dentin and bone cutting, dentin desensitization, enamel etching. It can be used for pain after implantation, periplasty, and removal of excess gingiva.

The laser beam of 915 ~ 980nm wavelength is utilized for various soft tissue treatment from pain relief. The laser of 915 ~ 980nm wavelength in the infrared region has been verified for its versatility, and the components making up 100mW class module are inexpensive and easy to manufacture. The tunable laser beam in the 915 nm band can be used to treat gum pain relief and gum ache. The adjustable laser beam in the 980nm band exhibits hemostatic and coagulant effects and is effective for soft tissue treatment such as ensuring good visual acuity during surgery, minimizing damage to adjacent tissue, scar formation and wound contraction.

A laser beam with a wavelength of 450 nm can be used to crown teeth and whiten the resin. In the case of a laser beam having a wavelength of 450 nm, whitening treatment can be performed by refraction of a hand piece and use of various light sources up to a portion where the LED light is not irradiated. In addition, it can be used as an aesthetic dental treatment laser because it can remove the discomfort inducing factor through the short time period compared with the conventional LED treatment, and can treat the tooth whitening treatment evenly without defects at the treatment site.

On the other hand, the treatment purpose can be achieved by exposing the laser light source to the teeth using a continuous wave by irradiating the spot size and the output according to the tooth structure or by using the auxiliary support. This can be achieved through the design of the handpiece.

FIG. 2 is a block diagram for explaining a configuration of a system for oral treatment with a multi-wavelength laser irradiation handpiece according to an embodiment of the present invention.

The power supply 210 receives external power and generates power required by the system.

The constant current control circuit 220 converts the supplied power supply into a constant current power supply to ensure stable operation of the components constituting the system.

The three laser diodes 101, 102, and 103 oscillate laser beams having wavelengths of? 1,? 2, and? 3, respectively. In this case, each laser diode may be a laser of 532 nm wavelength band, a blue laser, a green laser, an 800 nm or 900 nm band laser in the infrared region, argon (Ar), helium-neon (He-Ne), diode (AlGa, AlGaAs) It may include Nd: YAG, Ho: YAG, Er: Cr, YSGG, Er: YAG,

The switching circuit 230 selectively applies the constant current power generated by the constant current control circuit 220 to one or a plurality of the respective laser diodes 101, 102, and 103.

The main controller 250 controls the operation of each part of the laser system.

The temperature control unit 240 measures the temperature of each part in the laser system, such as a laser diode or a handpiece, a power supply, and a constant current control circuit, and when the part is overheated and thermal damage is predicted, Thereby controlling the operation of the laser system.

3-1 The laser coupling portion 108 allows laser beams of three individual wavelengths to reach the handpiece through one path (single fiber).

The focusing lens optical structure 120 may be disposed in the path of the laser beam transmitted through the optical fiber 150 within the handpiece 110 to adjust the focus and output to the target tissue of the laser beam.

Fig. 3 is a view showing the construction of the handpiece in more detail in the oral care system equipped with the multi-wavelength laser irradiation handpiece according to the present invention.

The handpiece 110 may be configured as a dentist and may have a slightly curved tip to facilitate laser irradiation of the patient's oral teeth or gums. An optical fiber 150 is connected to one side of the handpiece 110 to input a predetermined laser beam. On the other hand, a crystal tip 130 is disposed at the opposite end of the handpiece 110 to irradiate a laser beam onto the tissue.

A focusing lens optical structure 120 is disposed within the handpiece 110 to adjust the optical path through which the laser beam incident from the optical fiber 150 reaches the tissue through the crystal tip 130, Output and so on. The focusing lens optical structure 120 may include one or more movable lenses, diaphragms, filters, and the like. In addition, the focusing lens optical structure 120 may further include an optical element such as a collimator 125 and a prism 126.

The data cable 160 transmits control signals from the main controller 250 for automatically controlling the operation of the focusing lens optical structure 120. [ Thereby, the focusing lens optical structure 120 can be adjusted by manual operation of the operator or by automatic operation through the main controller 250. [

The embodiments of the present invention described above are merely illustrative of the technical idea of the present invention, and the scope of protection of the present invention should be interpreted according to the claims. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the essential characteristics thereof, It is to be understood that the invention is not limited thereto.

Claims (4)

A power supply for generating operating power,
A plurality of laser diodes for oscillating a laser beam having a specific wavelength as the operating power is applied,
A switching circuit for controlling operation power to be applied to any one of the plurality of laser diodes,
A plurality of optical fibers for transmitting respective laser beams oscillated in a plurality of laser diodes,
A coupling part for integrating the plurality of optical fibers into one optical fiber,
A single optical fiber for transmitting each laser beam transmitted through the coupling portion,
A handpiece comprising a focusing lens optical structure for receiving a laser beam from the single fiber at one end and irradiating a laser beam toward the tissue to be treated through the other end of the handpiece, Wherein the multi-wavelength laser irradiation handpiece comprises: The method according to claim 1,
Characterized in that the focusing lens optical structure is configured to control the size and the output of a spot of the laser beam irradiated to the tissue by manual operation of the operator or by a predetermined control signal. A system for oral care provided. The method according to claim 1,
Wherein the switching circuit is controllable to oscillate its laser beam simultaneously in two or more laser diodes. The method according to claim 1,
Wherein the plurality of laser diodes comprise:
A laser of 532 nm wavelength band, a blue laser and a green laser of visible light region, a laser of 800 nm or 900 nm band of infrared region, argon (Ar), helium-neon (He-Ne), diode (AlGa, AlGaAs), Nd : At least three of laser diodes capable of emitting YAG laser light, YAG laser light, Ho: YAG laser, Erbium chrome YSGG, Er: YAG laser, Er: YAG laser, Characterized in that it comprises a multi-wavelength laser irradiation handpiece.

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