Light curing machine for tooth restoration

Abstract

The light curing machine comprises a handle shell, a light guide rod, a control circuit board, a power source assembly, a light source assembly and a shading assembly, the control circuit board, the power source assembly and the light source assembly are all arranged in the handle shell, the light guide rod is detachably connected with the handle shell, and the shading assembly comprises a miniature air pump and an annular shading air bag. The micro air pump is arranged in the handle shell, the annular shading air bag sleeves the light guide rod, the side wall of the light guide rod is provided with an inflation and deflation channel communicated with the annular shading air bag, the micro air pump is communicated with the inflation and deflation channel, the side walls of the upper end and the lower end of the handle shell are provided with air inlet grilles, and the power supply assembly, the light source assembly and the micro air pump are all electrically connected with the control circuit board. Through cooperative use of the micro air pump and the annular shading air bag, the annular shading air bag is unfolded for shading after being inflated, the sight of a doctor is not affected when the annular shading air bag is contracted on the light guide bar before being inflated, the working efficiency is improved, the heat dissipation effect of the light curing machine is good, and the service life can be prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of dental medical instruments, and in particular to a light curing machine for tooth restoration. Background Art

[0002] A curing light is an oral device used to repair teeth. It uses the principle of photocuring to rapidly cure dental resin materials under the action of light waves within a specific wavelength range, thereby filling tooth cavities or bonding brackets. With the increasingly widespread application of photocurable filling materials in dental treatment, curing lights have become an indispensable treatment device in dental clinical departments. However, curing lights have high power and concentrated energy when in use. Photochemical hazards are common in retinal damage. Therefore, full consideration should be given to eye protection for patients and medical staff during clinical diagnosis and treatment.

[0003] There are some existing light curing machines, for example, a dental light curing machine disclosed in a Chinese patent with announcement number CN216495797U, which blocks the strong light emitted by the light source of the light curing machine to reduce the damage of the light of a certain wavelength of the light curing machine to the optic nerve cells of the human eye. The light curing machine includes a body, a battery, a control panel, a switch, a light guide, a light emitter and a light shielding component. A working chamber is arranged inside the body, the battery is installed in the right area of ​​the working chamber, the control panel is installed in the top left area of ​​the body, the switch is installed in the top left area of ​​the control panel, the right end of the light guide is connected to the left end of the body, the light emitter is installed at the left end of the light guide, and the light shielding component is installed in the middle area of ​​the light guide. The light shielding component in the patent needs to be installed on the light guide in advance before use, which makes the doctor's line of sight easily blocked, and it is impossible to quickly and effectively align the part of the tooth that needs to be light-cured, affecting work efficiency. Summary of the invention

[0004] The main purpose of the present invention is to overcome the defects of the above-mentioned background technology and provide a light curing machine for tooth restoration.

[0005] To achieve the above-mentioned purpose, the light curing machine for tooth restoration proposed in the present invention includes a handle shell, a light guide rod, a control circuit board, a power supply assembly, a light source assembly and a light shielding assembly. The handle shell is a hollow tube structure, and the control circuit board, the power supply assembly and the light source assembly are all arranged in the handle shell. One end of the light guide rod is detachably connected to the top of the handle shell. The light shielding assembly includes a micro air pump and an annular light shielding air bag. The micro air pump is arranged in the handle shell, and the annular light shielding air bag is sleeved on one end of the light guide rod close to the handle shell. The side wall of the light guide rod is provided with an air charging and discharging channel connected to the annular light shielding air bag, the air outlet of the micro air pump is connected to the air charging and discharging channel, and the side walls of the upper and lower ends of the handle shell are provided with air intake grilles. The power supply assembly, the light source assembly and the micro air pump are all electrically connected to the control circuit board. The annular light-shielding airbag is inflated by a micro air pump, so that it is expanded to block light, thereby preventing the blue light generated by the light curing machine from damaging the retina of doctors and patients when the light curing machine is curing resin materials, thereby improving safety.

[0006] Furthermore, the light guide rod is sleeved with an airbag connector, the airbag connector is provided with an annular groove, the inner ring wall of the annular light-shielding airbag is fixed to the groove bottom of the annular groove, and the inflation and deflation passage passes through the side wall of the light guide rod and the groove bottom of the annular groove and is connected to the annular light-shielding airbag. The annular light-shielding airbag shrinks in the annular groove for storage when not inflated or deflated, so as to prevent the annular light-shielding airbag from hanging outside at will and affecting the doctor's sight.

[0007] Furthermore, the annular light-shielding airbag is made of an elastic material, and is disc-shaped when inflated and expanded, and shrinks in the annular groove when deflated. When the annular light-shielding airbag is not inflated or deflated, the elasticity of the airbag itself discharges the internal gas along the inflation and deflation channel, so that the annular light-shielding airbag can shrink to avoid affecting the doctor's sight.

[0008] Furthermore, a slip ring is sleeved on the airbag connector, and the width of the slip ring corresponds to the notch of the annular groove. The annular groove is closed by sliding the slip ring, so as to prevent the annular light-shielding airbag contained in the annular groove from being scattered and exposed.

[0009] Furthermore, the inner side wall of the slip ring is axially provided with a convex strip, and the two shoulders of the annular groove are provided with concave tracks corresponding to the convex strip. The cooperation between the convex strip and the concave track prevents the slip ring from rotating relatively on the annular groove, and can only slide axially, ensuring that the slip ring can seal the annular groove.

[0010] Furthermore, a blowing channel is provided on the side wall of the light guide rod, the blowing channel runs through both ends of the light guide rod, and the air outlet of the micro air pump is connected to the blowing channel. By providing the blowing channel, a blowing function is added, which is used to perform a gentle blowing during tooth etching preparation, thereby improving the uniformity of applying the etching agent and improving the application range of the light curing machine.

[0011] Furthermore, the top of the handle shell is provided with a docking interface corresponding to the light guide rod, and the docking interface is a concave step structure. A light source mounting port is provided in the middle of the concave platform of the docking interface, and an inner side wall of the docking interface is provided with an internal thread, which corresponds to the external thread provided on the outer wall of the front end of the light guide rod. A first air vent and a second air vent are respectively provided on both sides of the concave platform of the docking interface, the first air vent corresponds to the charging and discharging channel, the second air vent corresponds to the blowing channel, and the light source mounting port corresponds to the light guide channel on the light guide rod.

[0012] Furthermore, the air outlet of the micro air pump is connected to a main air pipe, and the main air pipe is connected to a first branch pipe, a second branch pipe and a third branch pipe, the first branch pipe is connected to the first air port, and the first branch pipe is provided with a first valve, the second branch pipe is connected to the second air port, and the second branch pipe is provided with a second valve, the third branch pipe passes through the outside of the handle housing and is connected to the external atmosphere, and the third branch pipe is provided with a third valve.

[0013] Furthermore, an air filter is provided at the air inlet of the micro air pump and the air inlet grille to prevent dust from entering the micro air pump and unclean air from entering the patient's mouth.

[0014] Furthermore, the light source assembly includes an LED lamp head and a heat dissipation fin, wherein the LED lamp head is mounted at the light source mounting opening, and the heat dissipation fin is arranged at the rear of the LED lamp head and corresponds to the air intake grille. The heat dissipation effect is further improved by the heat dissipation fin.

[0015] The beneficial effects of the present invention include: through the coordinated use of a micro air pump and an annular light-shielding airbag, the annular light-shielding airbag can be expanded to shield light after being inflated, thereby preventing the blue light generated by the light curing machine when curing resin materials from damaging the retina of doctors and patients, thereby improving safety; the expanded area of ​​the annular light-shielding airbag after being inflated can be adjusted by adjusting the inflation volume and inflation pressure of the micro air pump, and is suitable for patients of different age groups, and the micro air pump can accelerate the air flow inside the handle housing when running, effectively dissipate the waste heat generated by the internal electrical components, and extend the service life of the light curing machine; the annular light-shielding airbag shrinks on the light guide rod before being inflated or after being deflated, and will not affect the doctor's line of sight. When in use, the doctor only needs to align the outlet of the light guide rod with the tooth position, start the micro air pump to inflate to expand the annular light-shielding airbag, and then start the light source assembly for light curing, thereby effectively improving the doctor's work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in this embodiment or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0017] Figure 1 1 is an overall schematic diagram of a light curing machine for tooth restoration according to an embodiment of the present invention.

[0018] Figure 2 1 is an exploded view of a light curing machine for tooth restoration according to an embodiment of the present invention.

[0019] Figure 3 Schematic diagram of the cross section of the light guide rod in the embodiment of the present invention.

[0020] Figure 4 Schematic diagram of an airbag connector in an embodiment of the present invention.

[0021] Figure 5 It is a partially enlarged schematic diagram of the interface in the embodiment of the present invention.

[0022] Figure 6 Schematic diagram of the connection of the micro air pump in the embodiment of the present invention.

[0023] Figure 7 Schematic diagram of a light source assembly in an embodiment of the present invention.

[0024] Figure 8 It is a schematic diagram of the connection of electrical components inside the handle housing in an embodiment of the present invention.

[0025] Description of Figure Numbers:

[0026]

[0027]

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, connection can be used for both fixing and circuit connection.

[0031] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] Example 1

[0034] See also Figures 1 to 8The light curing machine for tooth restoration disclosed in the present invention comprises a handle shell 1, a light guide rod 2, a control circuit board 3, a power supply assembly 4, a light source assembly 5 and a light shielding assembly 6. The handle shell 1 is a hollow tube structure. The control circuit board 3, the power supply assembly 4 and the light source assembly 5 are all arranged in the handle shell 1. One end of the light guide rod 2 is detachably connected to the top of the handle shell 1. The light shielding assembly 6 comprises a micro air pump 601 and an annular light shielding air bag 602. The micro air pump 601 is arranged inside the handle shell 1. The annular light shielding air bag 602 is sleeved on one end of the light guide rod 2 close to the handle shell 1. A charging and discharging channel 201 connected to the annular light shielding air bag 602 is opened on the side wall of the light guide rod 2. The micro air pump 6 The air outlet 6011 of 01 is connected with the charging and discharging air channel 201. Specifically, an airbag connector 7 is sleeved on the light guide rod 2, and an annular groove 701 is opened on the airbag connector 7. The inner ring wall of the annular light-shielding airbag 602 is fixed in the groove bottom of the annular groove 701. The charging and discharging air channel 201 passes through the side wall of the light guide rod 2 and the groove bottom of the annular groove 701 and is connected with the annular light-shielding airbag 602. The annular light-shielding airbag 602 is made of elastic material, such as latex or silicone material, preferably latex material. A pull tab is set inside the annular light-shielding airbag 602 to limit the shape of the airbag after inflation, so that the annular light-shielding airbag 602 is disc-shaped after inflation and expansion. 02 is deflated and then shrinks in the annular groove 701 for storage, so as to prevent the annular light-shielding airbag 602 from hanging outside at will. An air intake grille 101 is provided on the side walls at the upper and lower ends of the handle shell 1. When the micro air pump 601 is working, the air inside the handle shell 1 is drawn to form a negative pressure, so as to accelerate the entry of fresh air from the outside into the handle shell 1 from the air intake grille 101 to increase the heat dissipation efficiency. The power supply component 4, the light source component 5 and the micro air pump 601 are all electrically connected to the control circuit board 3. Specifically, a display screen 301 and an operation button 302 are provided on the handle shell 1. The display screen 301 displays the operation information of the light curing machine, and the operation button 302 is used to control the operation of the light curing machine. The display screen 301 and The operating button 302 is electrically connected to the control circuit board 3, and is used to control the start and stop of the light source assembly 5 and adjust the operating power of the micro air pump 601 through the control circuit board 3, thereby adjusting the inflation volume / inflation pressure, and then adjusting the size of the annular light-shielding airbag 602 after inflation; the power supply assembly 4 includes a battery 401, a charging contact 402 and a charging adapter circuit 403, and the charging contact 402 is arranged at the bottom of the handle housing 1 and contacts with an external charging base (not shown in the figure), and the charging adapter circuit 403 is electrically connected between the battery 401 and the charging contact 402, and is used to charge the battery 401. By using the battery 401 to supply power, there is no need to connect a power cord, which improves the convenience of use.In this embodiment, the micro air pump 601 and the annular light-shielding airbag 602 are used together. The annular light-shielding airbag 602 can be expanded to shield light after being inflated, so as to avoid the blue light generated by the light-curing machine damaging the retina of doctors and patients when the light-curing machine is curing resin materials, thereby improving safety. The expanded area of ​​the annular light-shielding airbag 602 after being inflated can be adjusted by adjusting the inflation volume and inflation pressure of the micro air pump 601, so that it is suitable for patients of different age groups. In addition, the operation of the micro air pump 601 can accelerate the air flow inside the handle housing 1, effectively dissipate the waste heat generated by the internal electrical components, and extend the life of the light-curing machine. service life; compared with the traditional light curing machine, the traditional light curing machine needs to install a shading sheet before use, which not only affects the doctor's line of sight when the light guide rod is aimed at the part of the tooth that needs light curing, but also is particularly cumbersome to use, and the shading area is fixed and cannot be made too large, otherwise the light guide rod 2 will completely block the doctor's observation line of sight after it is inserted into the patient's mouth, and it cannot be used normally. With the present light curing machine, the doctor only needs to first align the port of the light guide rod 2 with the tooth part, start the micro air pump 601 to inflate and expand the annular light-shielding airbag 602, and then start the light source assembly 5 for light curing. It is easy to use and can effectively improve the doctor's work efficiency.

[0035] In a preferred embodiment, a slip ring 702 is sleeved on the airbag connector 7, and the width of the slip ring 702 corresponds to the notch of the annular groove 701. The annular groove 701 is closed by sliding the slip ring 702, so that the annular light-shielding airbag 602 stored in the annular groove 701 is prevented from being scattered and exposed, thereby increasing the cleanliness of the light curing machine.

[0036] In a preferred embodiment, a convex strip 703 is axially provided on the inner side wall of the slip ring 702, and two shoulders of the annular groove 701 are provided with concave tracks 704 corresponding to the convex strip 703. The cooperation between the convex strip 703 and the concave track 704 prevents the slip ring 702 from rotating relative to the annular groove 701, and can only slide axially.

[0037] Example 2

[0038] In order to increase the function of the instrument and improve the efficiency of use, this embodiment is based on the embodiment 1, and an air blowing channel 202 is opened on the side wall of the light guide rod 2 for blowing air during tooth etching preparation to improve the uniformity of coating the etching agent. Please continue to refer to Figures 1 to 8 A blowing channel 202 is also provided on the side wall of the light guide rod 2. The blowing channel 202 runs through both ends of the light guide rod 2, and the air outlet 6011 of the micro air pump 601 is connected to the blowing channel 202. The air blown by the micro air pump 601 can be ejected from the outlet end of the light guide rod 2 through the blowing channel 202, and is used to blow out a weak airflow to form a uniform thin layer of the etching agent when the tooth is prepared for etching, thereby improving the etching effect, realizing one machine for multiple uses, and effectively improving the doctor's work efficiency.

[0039] In a specific example, a docking interface 102 corresponding to the light guide rod 2 is provided at the top of the handle shell 1, and the docking interface 102 is a concave step structure 107. A light source mounting port 103 is provided in the middle of the concave platform of the docking interface 102, and an internal thread 104 is provided on the inner side wall of the docking interface 102. The internal thread 104 corresponds to the external thread 204 provided on the outer wall of the front end of the light guide rod 2 to achieve a detachable connection. A first air vent 105 and a second air vent 106 are respectively provided on both sides of the concave platform of the docking interface 102, the first air vent 105 corresponds to the charging and discharging channel 201, the second air vent 106 corresponds to the blowing channel 202, and the light source mounting port 103 corresponds to the light guide channel 203 on the light guide rod 2. After the light guide rod 2 is rotated and installed to the top of the handle shell 1, the first air vent 105 is sealed and connected with the charging and discharging air channel 201 for air conduction, the second air vent 106 is sealed and connected with the blowing channel 202 for air conduction, and the light source installation port 103 is connected with the light guide channel 203.

[0040] In a specific example, the air outlet 6011 of the micro air pump 601 is connected to the main air pipe 603, and the main air pipe 603 is connected to the first branch pipe 604, the second branch pipe 605 and the third branch pipe 606. The first branch pipe 604 is connected to the first vent 105, and the first branch pipe 604 is provided with a first valve 607 for controlling the gas blown out by the micro air pump 601 to enter the charging and discharging channel 201 to inflate the annular light-shielding airbag 602. The second branch pipe 605 is connected to the second vent 106, and the second branch pipe 605 is provided with a second valve 608 for controlling the micro air pump 601 to blow out the gas. The gas blown out by the air pump 601 enters the blowing channel 202 for blowing. The third branch pipe 606 runs through the outside of the handle housing 1 and is connected to the external atmosphere. The third branch pipe 606 is provided with a third valve 609, which is used to discharge the waste heat generated in the handle housing 1 to the external atmosphere to increase the service life of the instrument. Specifically, the first valve 607, the second valve 608 and the third valve 609 are all micro solenoid valves. In this embodiment, a micro air pump 601 can be used to simultaneously realize the inflation of the annular light-shielding airbag 602, the heat dissipation of the light curing machine and the blowing function.

[0041] In a preferred embodiment, air filters 8 are provided at the air inlet 6010 of the micro air pump 601 and the air inlet grille 101. The air filters prevent dust from entering the micro air pump 601 and unclean air from entering the patient's mouth.

[0042] In a specific example, the light source assembly 5 includes an LED lamp head 501 and a heat dissipation fin 502. The LED lamp head 501 is installed at the light source installation port 103. The blue light generated by the LED lamp head 501 enters the light guide channel 203 through the light source installation port 103, and is irradiated on the photosensitive resin material for filling for curing. The heat dissipation fin 502 is arranged at the rear of the LED lamp head 501 and corresponds to the air intake grille 101. The waste heat generated by the LED lamp head 501 is diffused through the heat dissipation fin 502 and heat exchanged with the cold air entering from the air intake grille 101 to dissipate heat, thereby further improving the heat dissipation efficiency and avoiding pulpitis or pulp necrosis caused by excessive temperature during light curing.

[0043] The above content is a further detailed description of the present invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, they can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be regarded as belonging to the protection scope of the present invention. In the description of this specification, the description of reference terms "an embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily target the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In the absence of mutual contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and modifications can be made herein without departing from the scope of protection of the patent application.

Claims

1. A light curing machine for tooth restoration, characterized in that: It includes a handle shell, a light guide rod, a control circuit board, a power supply assembly, a light source assembly and a shading assembly. The handle shell is a hollow tube structure. The control circuit board, the power supply assembly and the light source assembly are all arranged in the handle shell. One end of the light guide rod is detachably connected to the top of the handle shell. The shading assembly includes a micro air pump and an annular light-shielding air bag. The micro air pump is arranged in the handle shell. The annular light-shielding air bag is sleeved on one end of the light guide rod close to the handle shell. The side wall of the light guide rod is provided with an air charging and discharging channel connected to the annular light-shielding air bag. The air outlet of the micro air pump is connected to the air charging and discharging channel. The side walls of the upper and lower ends of the handle shell are provided with air intake grilles. The power supply assembly, the light source assembly and the micro air pump are all electrically connected to the control circuit board.

2. The light curing machine for tooth restoration according to claim 1, characterized in that: An airbag connector is sleeved on the light guide rod, and an annular groove is opened on the airbag connector. The inner ring wall of the annular light-shielding airbag is fixed to the bottom of the annular groove, and the inflation and deflation channel passes through the side wall of the light guide rod and the bottom of the annular groove and is connected to the annular light-shielding airbag.

3. The light curing machine for tooth restoration according to claim 2, characterized in that: The annular light-shielding airbag is made of elastic material. The annular light-shielding airbag is disc-shaped after being inflated and expanded. The annular light-shielding airbag shrinks in the annular groove after being deflated.

4. The light curing machine for tooth restoration according to claim 3, characterized in that: The airbag connecting piece is sleeved with a slip ring, and the width of the slip ring corresponds to the notch of the annular groove.

5. The light curing machine for tooth restoration according to claim 4, characterized in that: The inner side wall of the slip ring is axially provided with a convex strip, and the two shoulders of the annular groove are provided with concave rails corresponding to the convex strip.

6. The light curing machine for tooth restoration according to any one of claims 1 to 5, characterized in that: An air blowing channel is also provided on the side wall of the light guide rod, and the air blowing channel runs through both ends of the light guide rod, and the air outlet of the micro air pump is connected to the air blowing channel.

7. The light curing machine for tooth restoration according to claim 6, characterized in that: The top of the handle shell is provided with a docking interface corresponding to the light guide rod, and the docking interface is a concave step structure. A light source mounting port is provided in the middle of the concave platform of the docking interface, and an internal thread is provided on the inner side wall of the docking interface, and the internal thread corresponds to the external thread provided on the outer wall of the front end of the light guide rod. A first air vent and a second air vent are respectively provided on both sides of the concave platform of the docking interface, the first air vent corresponds to the charging and discharging channel, the second air vent corresponds to the blowing channel, and the light source mounting port corresponds to the light guide channel on the light guide rod.

8. The light curing machine for tooth restoration according to claim 7, characterized in that: The air outlet of the micro air pump is connected to a main air pipe, and the main air pipe is connected to a first branch pipe, a second branch pipe and a third branch pipe. The first branch pipe is connected to the first air port, and a first valve is provided on the first branch pipe. The second branch pipe is connected to the second air port, and a second valve is provided on the second branch pipe. The third branch pipe passes through the outside of the handle housing and is connected to the external atmosphere, and a third valve is provided on the third branch pipe.

9. The light curing machine for tooth restoration according to claim 8, characterized in that: An air filter is provided at the air inlet of the micro air pump and the air inlet grille.

10. The light curing machine for tooth restoration according to claim 9, characterized in that: The light source assembly includes an LED lamp head and a heat dissipation fin. The LED lamp head is installed at the light source installation opening. The heat dissipation fin is arranged at the rear of the LED lamp head and corresponds to the air intake grille.

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