Waveguide laser dental drill device

Abstract

The waveguide laser dental drill device comprises a liquid supply system, a water pipe, a laser, an optical fiber, a handle, a hinge, a shell, a nozzle, a coupling cavity, a sealing ring and a liquid flow column are included; the liquid supply system guides liquid with pressure into a coupling cavity in the shell through a water pipe arranged in a hollow handle and a hinge, and then the liquid is sprayed out through a small hole in the center of a nozzle and kept as a cylindrical ejected water flow to form a liquid flow column. Laser is totally reflected in a cylindrical liquid jet, namely a liquid flow column, and is transmitted to the tooth surface along a water jet. No mechanical force effect exists in the using process, microminiaturization and medical treatment of medical equipment are facilitated, normal saline is adopted for the first time for liquid supply of the waveguide laser system, and the waveguide laser system fits the human tissue environment; the waveguide laser switch is controlled in a pedal mode, and safety and controllability are achieved; the dental caries removing efficiency is high, postoperative recovery is fast, and the composition is more suitable for children and old people; the operation cost is low and the comprehensive technical effect is excellent.

Description

TECHNICAL FIELD

[0001] The utility model relates to dental operating instrument structure design and application technical field, especially in kind of waveguide laser dental drill device. BACKGROUND

[0002] With the continuous progress of technology and the continuous improvement of people's life quality, people pay more and more attention to the maintenance and treatment of teeth. The current general caries treatment mode is: using a dental drill to drill the caries, then using a drug to kill the nerve in the dental pulp, and then preparing a cavity according to certain shape requirements. This process causes discomfort to the patient and consumes time, and the drill bit has the risk of slipping on the uneven caries surface and insufficient position accuracy, which may damage the patient's healthy teeth and other oral tissues, causing safety hazards. In addition, the splashing of the broken tooth tissue by the dental drill may cause iatrogenic pollution.

[0003] People urgently hope to obtain a waveguide laser dental drill device without mechanical force, safe and accurate, and without residue splashing. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a waveguide laser dental drill device, which has the advantages of no mechanical force, safety, accuracy, and no residue splashing, and solves the problems in the background technology.

[0005] The utility model provides a waveguide laser dental drill device, and the technical key is:

[0006] The waveguide laser dental drill device comprises a liquid supply system 1, a water pipe 2, a laser 3, an optical fiber 4, a handle 5, a hinge 6, an outer shell 7, a nozzle 8, a coupling cavity 9, a sealing ring 10, a laser 11, a liquid column 12, tooth tissue 13, and a laser shielding plate 14.

[0007] The handle 5 and the hinge 6 are both hollow structures, the handle 5 is arranged in the rear part of the hinge 6, the hinge 6 is arranged in the front part, and the handle 5 and the hinge 6 are sequentially connected into one body, and the handle 5 and the hinge 6 are arranged with the water pipe 2 and the optical fiber 4 in the internal cavities.

[0008] The outer shell 7 is connected to the front end of the hinge 6, and the nozzle 8 is arranged at the front end of the outer shell 7.

[0009] The coupling cavity 9, the optical fiber 4, and the liquid column 12 are coaxially arranged in the inner part of the outer shell 7, the nozzle 8 is coaxially arranged at the front end of the outer shell 7, the sealing ring 10 is arranged between the outer shell 7 and the nozzle 8 for sealing, the hinge 6 connects the handle 5 and the outer shell 7, and the hinge 6 can adjust the angle between the handle 5 and the outer shell 7.

[0010] The liquid supply system 1 guides the liquid with pressure into the coupling cavity 9 in the shell 7 through the water pipe 2 arranged in the hollow handle 5 and the hinge 6, and then the liquid is sprayed out through the small hole in the center of the nozzle 8 and kept as a cylindrical jet to form the liquid column 12;

[0011] The laser 3 is used to generate a high-energy laser beam; the laser emitted by the laser 3 is output through the optical fiber 4 and conducted to the coupling cavity 9 for emission, and the laser beam is finally emitted along the liquid spraying direction through the small hole in the center of the nozzle 8 and in the liquid column 12; the laser is totally reflected in the cylindrical liquid jet, i.e. the liquid column 12, and transmitted along the water jet to the tooth surface.

[0012] In the waveguide laser dental drill device, the liquid in the liquid supply system 1 is one of the following or a combination thereof: pure water, physiological saline; the liquid pressure sprayed by the pressure spray head is 0.1-3 MPa.

[0013] The waveguide laser dental drill device meets one of the following requirements or a combination thereof:

[0014] Firstly, the waveguide laser dental drill is provided with a sealing ring 10 arranged between the nozzle 8 and the shell 7 for liquid sealing;

[0015] Secondly, the waveguide laser dental tissue drilling device is provided with a laser shielding plate 14; wherein: the shell 7 and the laser shielding plate 14 are fixedly arranged on the handle 5, the handle 5 is further connected with the hinge 6, the hinge is used to connect the handle 5 and the shell 7 and allow relative rotation therebetween; the hinge is wrapped with a light-proof medical rubber hose; the laser shielding plate 14 can be replaced according to the used laser wavelength and actual use condition;

[0016] Thirdly, the nozzle 8 coaxially arranged at the front end of the shell 7 is a reverse cone capable of reducing interference, and a through hole with a diameter of 1-5 mm is coaxially arranged in the center of the nozzle, which communicates the coupling cavity 9 with the outside, and the material of the nozzle is one of the following or a combination thereof: stainless steel, ruby, glass, diamond;

[0017] Fourthly, the wavelength range of the laser 3 is 0.3um-3μm, the laser pulse width is 10ns-800μs, and the laser output power is ≤300W;

[0018] Fifthly, the liquid supplied by the liquid supply system 1 is one of the following two: the first kind is pure water, and the specific performance index is twice-distilled ultrapure water; the second kind is physiological saline, and the specific requirement is sterile physiological saline containing 0.9% sodium chloride;

[0019] Sixthly, a foot-controlled controller A15 capable of controlling whether the nozzle 8 sprays liquid is arranged corresponding to the liquid supply system 1; and a foot-controlled controller B16 capable of controlling whether the laser 3 emits laser is arranged corresponding to the laser 3.

[0020] The waveguide laser tooth tissue punching and cavity preparation method using the waveguide laser dental drill device has the following steps and contents in sequence:

[0021] Step 1, set the output power and working time of the laser 1; the output power of the laser 1 is set to 0-300W, and the time is 0-60s; further preferably, in step 1, because the thickness of tooth enamel is different, the actual punching power is usually set to 20-50W, and the working time is 5s;

[0022] Step 2, replace the pressure nozzle with a suitable diameter according to the different punching diameters; the tooth hole diameter is usually 0.5-2mm;

[0023] Step 3, after the foregoing dental operation pre-step is completed, the caries of the patient is fully exposed, the operator holds the waveguide laser dental drill device and places the nozzle 8 of the waveguide laser dental drill device close to the tooth surface to be punched, and the suspension height is less than 5mm;

[0024] Step 4, open the liquid supply system 1 and set the liquid supply speed; step on the foot-operated controller A15, the liquid supply system starts to supply liquid, and the liquid flow is sprayed from the nozzle 8 to the tooth surface to be punched;

[0025] Step 5, step on the foot-operated controller B16 for controlling the light output of the laser, the laser 3 emits laser, the laser beam is introduced into the coupling cavity 9 through the optical fiber 4 and coupled with the liquid, the laser composite jet is output to the tooth surface to be punched, and the punching and cavity preparation operation of the tooth tissue is realized;

[0026] Step 6, after the processing time is reached, the foot-operated controller B16 is released, the laser 3 is automatically turned off, the operator steps on the foot-operated controller A15 of the liquid supply system again, the liquid supply system stops supplying liquid, and the operator checks the cavity preparation situation;

[0027] Step 7, turn off the laser system and the liquid supply system, and complete the dental punching and cavity preparation.

[0028] In order to ensure that the water mist generated by the reflection of the water flow during punching does not affect the operator's field of view, the distance between the lowermost structure, i.e. the nozzle 8, and the tooth tissue to be processed in the punching device needs to be less than 5mm.

[0029] In order to protect the operator's vision, the operator can observe the patient's oral cavity and caries and operate through the laser shielding plate 14.

[0030] The waveguide laser tooth tissue punching and cavity preparation method using the waveguide laser dental drill device has the following steps and contents in sequence:

[0031] The utility model provides a kind of dental drill based on waveguide laser technology, the device can utilize laser energy to process cavity on dental tissue, preparation process is without mechanical force effect, not only can avoid secondary injury to patient but also can greatly improve cavity preparation precision.In addition, liquid jet coaxial with laser energy, on the one hand, it can guide laser energy to be transmitted to dental tissue efficiently, on the other hand, it can cool the processing area in time, avoid laser energy to damage normal tissue around cavity, retain physiological structure of tooth replacement to the greatest extent, and better accommodate and support filling material;The comprehensive technical effect is excellent.

[0032] The more optimal technical effect of the utility model is:

[0033] The utility model uses liquid guide laser device to be favorable to miniaturization of medical equipment, medicalization, and proposes a special device and corresponding special method that can be used for dental caries treatment and cavity preparation, with unprecedented effect;

[0034] The utility model first uses physiological saline as waveguide laser system liquid supply, which does not affect laser drilling effect, and is compatible with human tissue environment at the same time.

[0035] The utility model also first uses foot pedal type control waveguide laser switch, which is safe and controllable, and conforms to ergonomic design.

[0036] Compared with prior art, the utility model has the beneficial effects as follows:

[0037] I. The main component of dental tissue is carbonate hydroxyapatite, the laser wavelength range used in the utility model is 0.3um-3um, the waveguide laser absorption efficiency of dental tissue is higher than that of other human tissues, and the biological safety is good, so that the caries can be effectively removed.

[0038] II. Liquid flow and laser energy are coaxially emitted in a composite form, which not only guides laser energy to act on caries with high efficiency, but also cools in time to reduce heat damage area.

[0039] III. Waveguide laser is a non-contact, mechanical force-free stimulation and vibration-free sliding action, which is comfortable for patients, accurately and safely prepares cavity, saves time, recovers quickly after operation, and is more suitable for children and old people.

[0040] IV. The method does not need to frequently change drill bit, reduces consumable cost and saves treatment preparation time. DRAWINGS

[0041] Figure 1 It is a schematic diagram of the composition principle of the liquid guide laser device of the utility model.

[0042] Figure 2 It is a working principle flow chart of embodiment 2.

[0043] Figure 3A structural entity diagram corresponding to Example 1. DETAILED DESCRIPTION

[0044] The utility model will be further described below in conjunction with examples and the accompanying drawings of the specification, but not limited to this.

[0045] Example 1

[0046] A waveguide laser dental drill device, as shown in Figure 1 、 Figure 3 ; the waveguide laser dental drill device includes a liquid supply system 1; a water pipe 2, a laser 3, an optical fiber 4, a handle 5, a hinge 6, a shell 7, a nozzle 8, a coupling cavity 9, a sealing ring 10, a laser 11, a liquid column 12, a dental tissue 13, a laser shielding plate 14; wherein:

[0047] The handle 5 and the hinge 6 are both hollow structures, the handle 5 is in the rear part while the hinge 6 is in the front part, and the two are sequentially connected as a whole, and the handle 5 and the hinge 6 are arranged with the water pipe 2 and the optical fiber 4 in the internal cavities; the waveguide laser dental drill device is provided with the liquid supply system 1 and the laser 3 at the rear end; the liquid supply system 1 is connected with the rear end of the water pipe 2, and the laser 3 is connected with the rear end of the optical fiber 4;

[0048] The shell 7 is connected to the front end of the hinge 6; the front end of the shell 7 is connected and arranged with the nozzle 8;

[0049] The shell 7 is coaxially arranged with the liquid outlet of the coupling cavity 9, the optical fiber 4 and the liquid column 12 inside; the nozzle 8 is coaxially arranged at the front end of the shell 7; there is a sealing ring 10 between the shell 7 and the nozzle 8 for sealing; the hinge 6 connects the handle 5 and the shell 7, and the hinge 6 can adjust the angle between the shell 7 and the handle 5;

[0050] The liquid supply system 1 guides the liquid with pressure into the coupling cavity 9 in the shell 7 through the water pipe 2 arranged in the hollow handle 5 and hinge 6, and then the liquid is sprayed out through the small hole in the center of the nozzle 8 and kept as a cylindrical jet flow to form the liquid column 12;

[0051] The laser 3 is used for generating a high-energy laser beam; the laser emitted by the laser 3 is output through the optical fiber 4 and conducted to the coupling cavity 9 to be emitted, and the laser beam is finally emitted through the small hole in the center of the nozzle 8 along the liquid spraying direction and in the liquid column 12, the laser is totally reflected in the cylindrical liquid jet, i.e. the liquid column 12, and transmitted to the tooth surface along the water jet.

[0052] In the waveguide laser dental drill device, the liquid in the liquid supply system 1 is one of the following or a combination thereof: pure water, physiological saline; the liquid pressure sprayed by the pressure spray head is 0.1-3 MPa.

[0053] The waveguide laser dental drill device meets one of the following requirements or a combination thereof:

[0054] One, the waveguide laser dental drill is provided with a sealing ring 10 arranged between the nozzle 8 and the shell 7 for liquid sealing;

[0055] Second, the waveguide laser dental tissue drilling device is provided with a laser shielding plate 14; wherein: the shell 7 and the laser shielding plate 14 are fixedly arranged on the handle 5, the handle 5 is further connected with the hinge 6, the hinge is used for connecting the handle 5 and the shell 7 and allowing relative rotation between the two; the hinge is wrapped with a light-tight medical rubber hose; the laser shielding plate 14 can be replaced according to the used laser wavelength and actual use condition;

[0056] Third, the nozzle 8 coaxially arranged at the front end of the shell 7 is a reverse cone capable of reducing interference, the center thereof is coaxially arranged with a through hole with a diameter of 1-5 mm, the through hole is connected and coupled with the cavity 9 and the outside, and the nozzle is made of one of the following materials or a combination thereof: stainless steel, ruby, glass and diamond;

[0057] Fourth, the wavelength range of the laser 3 is 0.3um-3μm, the laser pulse width is 10ns-800μs, and the laser output power is ≤300W;

[0058] Fifth, the liquid supplied by the liquid supply system 1 is one of the following two kinds: the first kind is pure water, and the specific performance index is twice-distilled ultrapure water; the second kind is physiological saline, and the specific requirement is sterile physiological saline containing 0.9% sodium chloride;

[0059] Sixth, a foot-operated controller A15 capable of controlling whether the nozzle 8 sprays liquid is arranged corresponding to the liquid supply system 1; a foot-operated controller B16 capable of controlling whether the laser 3 emits laser is arranged corresponding to the laser 3.

[0060] The waveguide laser dental tissue drilling and cavity preparation method using the waveguide laser dental drill device described in the foregoing of the embodiment is as follows in sequence:

[0061] Step 1, set the output power and working time of the laser 1; the output power of the laser 1 is set in the range of 0-300W, and the time is 0-60s; it is further preferred that in step 1, due to the different thicknesses of tooth enamel, the actual drilling power is usually set to 20-50W, and the working time is 5s;

[0062] Step 2, replace the pressure nozzle with a suitable diameter according to the different drilling diameters; the tooth hole diameter is usually 0.5-2mm;

[0063] Step 3, after the foregoing dental operation pre-step is completed, the caries of the patient is fully exposed, the operator holds the waveguide laser dental drill device and places the nozzle 8 of the waveguide laser dental drill device close to the tooth surface to be drilled, and the suspension height is less than 5mm;

[0064] Step 4, open the liquid supply system 1 and set the liquid supply speed; step on the foot controller, the liquid supply system starts to supply liquid, and the liquid stream is sprayed from the nozzle 8 to the tooth surface at the position to be drilled;

[0065] Step 5, step on the foot controller for controlling the light emission of the laser, the laser 3 emits laser, the laser beam is introduced into the coupling cavity 9 through the optical fiber 4 and coupled with the liquid, the laser composite jet is output to the tooth surface to be drilled, and the drilling and cavity preparation of the tooth tissue are realized;

[0066] Step 6, after the processing time is reached, the laser 3 automatically stops emitting light, the operator steps on the foot controller of the liquid supply system again, the liquid supply system stops supplying liquid, and the operator checks the cavity preparation;

[0067] Step 7, turn off the laser system and the liquid supply system, and complete the drilling and cavity preparation of the tooth.

[0068] In order to ensure that the water mist generated by the reflection of the water stream during drilling does not affect the operator's view, the distance between the lowermost structure in the drilling device, i.e. the nozzle 8 and the tooth tissue to be processed, is less than 5 mm.

[0069] In order to protect the operator's vision, the operator can observe the patient's oral cavity and caries and operate through the laser shielding plate 14.

[0070] Example 2

[0071] The waveguide laser dental drill device comprises a liquid supply system 1, a water pipe 2, a laser 3, an optical fiber 4, a handle 5, a hinge 6, an outer shell 7, a nozzle 8, a coupling cavity 9, a sealing ring 10, a laser 11, a liquid stream column 12, tooth tissue 13 and a laser shielding plate 14.

[0072] The coupling cavity 9 and the optical fiber 4 are coaxially arranged in the inner part of the outer shell 7; the nozzle 8 is coaxially arranged below the outer shell 7; the sealing ring 10 is arranged between the outer shell and the nozzle for sealing; the hinge connects the handle and the outer shell, and the angle between the handle and the outer shell can be adjusted.

[0073] The liquid supply system 1 guides the liquid with pressure into the coupling cavity 9 in the outer shell 7 through the water pipe 2 in the hollow handle 5, and then the liquid is sprayed out through the small hole in the center of the nozzle 8 and kept as a cylindrical jet;

[0074] The laser 3 is used for generating a high-energy laser beam; the laser emitted by the laser 3 is output to the coupling cavity 9 through the optical fiber 4, and then is emitted along the liquid spraying direction through the small hole in the center of the nozzle 8, and then the laser is totally reflected in the cylindrical liquid jet and is transmitted along the water jet to the tooth surface.

[0075] The liquid in the liquid supply system 1 is sterile normal saline containing 0.9% sodium chloride; the liquid pressure sprayed by the pressure nozzle is set to 0.2 MPa;

[0076] The waveguide laser dental drill also meets one or a combination of the following requirements:

[0077] First, the waveguide laser dental drill is provided with a sealing ring 10 arranged between the nozzle and the shell for liquid sealing;

[0078] Second, the waveguide laser dental tissue drilling device is provided with a laser shielding plate 14; wherein: the shell 7 and the laser shielding plate 14 are fixedly arranged on the handle 5, the handle 5 is further connected with the hinge 6, the hinge is used to connect the handle 5 and the shell 7, and allows relative rotation between the two; the hinge is wrapped with a light-tight medical rubber hose; the laser shielding plate 14 can be replaced according to the used laser wavelength and actual use;

[0079] Third, the nozzle 8 is coaxially arranged below the shell 7, and is a reverse cone shape that can reduce interference, the center of which is coaxially arranged with a through hole with a diameter of 3mm, which communicates the coupling cavity 9 with the outside, and the material of the nozzle is a combination of stainless steel and glass;

[0080] Fourth, the wavelength of the laser 3 is 2.1μm, the laser pulse width is 30μs, and the laser output power is less than 30W:

[0081] The dental drill and the cavity preparation method using the foregoing waveguide laser dental drill device of the embodiment are as follows in steps and contents:

[0082] Step 1: set the output power and working time of the laser 1; the laser output power is set in the range of 0-30W, and the time is 10s

[0083] Step 2: replace the pressure nozzle with a diameter of 3mm according to different drilling diameters;

[0084] Step 3: after completing the preoperative steps of the dental operation, fully expose the caries of the patient, and the operator holds the laser dental drill to make the nozzle close to the tooth surface at the drilling position with a suspension height of 2mm;

[0085] Step 4: open the liquid supply system 1 and set the liquid supply pressure to 0.2MPa; press the foot-operated controller A15, and the liquid supply system starts to supply liquid, and the liquid flows out from the nozzle to the tooth surface at the drilling position;

[0086] Step 5: press the foot-operated controller B16 for controlling the light output of the laser 3, the laser 3 emits laser, the laser is introduced into the coupling cavity 9 through the optical fiber 4 and coupled with the liquid, the laser composite jet is output to the tooth surface at the drilling position, and the drilling and cavity preparation operations of the tooth tissue are realized;

[0087] Step 6: after the processing time is reached, the laser 3 automatically turns off the light output, the operator presses the foot-operated controller B15 of the liquid supply system again, the liquid supply system stops supplying liquid, and the operator checks the cavity preparation situation;

[0088] Step 7, close the laser system and the liquid supply system, complete the dental drilling and cavity preparation.

Claims

1. A waveguide laser dental drill apparatus, characterized by: The waveguide laser drill device comprises a liquid supply system (1), a water pipe (2), a laser (3), an optical fiber (4), a handle (5), a hinge (6), a shell (7), a nozzle (8), a coupling cavity (9), a sealing ring (10), a laser (11), a liquid column (12), a tooth tissue (13), and a laser shielding plate (14). The handle (5) and the hinge (6) are both hollow structures, the handle (5) is arranged at the rear part of the hinge (6), and the handle (5) and the hinge (6) are sequentially connected into an integrated body, the handle (5) and the hinge (6) are internally provided with the water pipe (2) and the optical fiber (4), the waveguide laser drill device is provided with the liquid supply system (1) and the laser (3) at the rear end thereof, the liquid supply system (1) is connected to the rear end of the water pipe (2), and the laser (3) is connected to the rear end of the optical fiber (4). The shell (7) is connected to the front end of the hinge (6), and the front end of the shell (7) is provided with the nozzle (8). The shell (7) is coaxially provided with the liquid outlet of the coupling cavity (9), the optical fiber (4), and the liquid column (12) in the shell (7), the nozzle (8) is coaxially arranged at the front end of the shell (7), and the sealing ring (10) is arranged between the shell (7) and the nozzle (8) for sealing, the hinge (6) connects the handle (5) and the shell (7), and the hinge (6) can adjust the angle between the handle (5) and the shell (7). The liquid supply system (1) guides the liquid with pressure into the coupling cavity (9) in the shell (7) through the water pipe (2) arranged in the hollow handle (5) and the hinge (6), and then the liquid is sprayed out through the small hole in the center of the nozzle (8) and kept as a cylindrical jet flow to form the liquid column (12). The laser (3) is used for generating a high-energy laser beam, the laser emitted by the laser (3) is output through the optical fiber (4) and conducted to the coupling cavity (9) to be emitted, the laser beam is finally emitted through the small hole in the center of the nozzle (8) along the liquid spraying direction and in the liquid column (12), the laser is totally reflected in the cylindrical liquid jet, i.e., the liquid column (12), and transmitted to the tooth surface along the water jet.

2. The waveguide dental drill apparatus according to claim 1, wherein: In the waveguide laser drill device, the liquid pressure sprayed by the pressure nozzle is 0.1-3 MPa.

3. The waveguide dental drill apparatus of claim 1, wherein: The waveguide laser drill device meets one or a combination of the following requirements: First, the waveguide laser drill device is provided with the sealing ring (10) arranged between the nozzle (8) and the shell (7) for liquid sealing; Second, the waveguide laser drill device is provided with the laser shielding plate (14), wherein the shell (7) and the laser shielding plate (14) are fixedly arranged on the handle (5), the handle (5) is further connected with the hinge (6), the hinge is used for connecting the handle (5) and the shell (7) and allowing relative rotation therebetween, the hinge is wrapped with a light-proof medical rubber hose, and the laser shielding plate (14) can be replaced according to the wavelength of the laser used and the actual use condition; Third, the nozzle (8) coaxially arranged at the front end of the shell (7) is a reverse cone capable of reducing interference, a through hole is coaxially arranged in the center of the nozzle (8), the diameter of the through hole is 1-5 mm, and the through hole is connected with the coupling cavity (9) and the outside. Fourthly, the wavelength range of the laser (3) is 0.3um-3μm, the laser pulse width is 10ns-800μs, and the laser output power is ≤300W; Fifthly, the liquid supplied by the liquid supply system (1) is one of the following two kinds: the first kind is pure water, and the specific performance index is twice-distilled ultrapure water; the second kind is physiological saline, and the specific requirement is sterile physiological saline containing 0.9% sodium chloride; Sixthly, a foot-operated controller A (15) capable of controlling whether the nozzle (8) sprays liquid is arranged corresponding to the liquid supply system (1); a foot-operated controller B (16) capable of controlling whether the laser emits is arranged corresponding to the laser (3).

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