CN103800083B - Miniature automatic dental-preparation cutting device in oral cavity - Google Patents

Abstract

The invention discloses a cutting device for micro automatic tooth preparation in the oral cavity, specifically a motor drive assembly, an optical path assembly and a monitoring assembly, and the X vibrating mirror swing motor and the Y vibrating mirror swing motor in the motor drive assembly are installed on the swing motor mounting base Above, the linear motor is fixed on the linear motor mounting base by screws, and the linear motor mounting base is fixed on the mounting base plate; the X vibrating mirror in the optical path assembly is bonded to the X vibrating mirror swing motor, and the Y vibrating mirror is bonded to the On the swing motor of the Y vibrating mirror, the focus lens is installed on the lens mount through a threaded ring, and the beam combiner is fixed on the beam combiner mount through screws; the industrial lens in the monitoring component is connected to the CCD image sensor through threads. The device can cut and shape teeth in various preparation shapes according to clinical needs, and perform real-time monitoring outside the mouth to further ensure the safety of the operation.

Description

A cutting device for automatic tooth preparation in the oral cavity

technical field

The invention relates to the technical field of oral surgery instruments, in particular to a miniature automatic tooth preparation cutting device in the oral cavity.

Background technique

At present, in dental oral treatment, it is sometimes necessary to cut tooth hard tissue quantitatively. Turbine-driven dental handpieces are widely used in dentist clinics and medical laboratories around the world. Most dental handpieces include a handle part, at one end of the handle part The connector and at the other end the tool carrying the drive head, the connector provides the connection of the handset to the various air, water, light and electricity supply lines, which are usually combined in a so-called umbilical cord; The drive head houses the tool rotating part, which typically consists of a tool base or chuck and a motor or turbine rotatably mounted in the head for driving the chuck.

In the existing technical solutions, the cutting of the teeth by the dental handpiece uses the contact between the drive head and the teeth to complete the cutting work. Due to the shaking of the human hand and the narrow operating space in the oral cavity, the shape accuracy of the teeth after dental preparation (dental preparation) Depending on the doctor's clinical experience and technical level, the results of tooth preparation are uneven. In the actual work process, the surgical instruments generate a lot of noise, which also causes discomfort and tension to the patient. After each operation, the instruments have to be cleaned Overall cleaning and disinfection.

Contents of the invention

The purpose of the present invention is to provide a cutting device for the miniature automatic tooth preparation in the oral cavity. The cutting device cuts the hard tissue of the tooth by laser and adopts automatic digital cutting, so that the precision of the tooth preparation is higher and the doctor's work intensity is reduced; at the same time It can cut and shape teeth in various preparation shapes according to clinical needs, and carry out real-time monitoring outside the mouth to further ensure the safety of surgery.

A cutting device for miniature automatic tooth preparation in the oral cavity, the device includes: a motor drive assembly, an optical path assembly and a monitoring assembly, wherein:

The X vibrating mirror swing motor and the Y vibrating mirror swing motor in the motor drive assembly are installed on the swing motor mounting base, the linear motor is fixed on the linear motor mounting base by screws, and the linear motor mounting base is fixed on the installation base plate; The linear motor is connected with the connecting shaft of the motor, and is fixed with the lens connecting frame through a nut; the lens connecting frame is fixed on the slider through the connecting shaft fixing nut and the lens mounting seat, and the described slider and the linear guide rail are used to make the The slider takes the lens mounting seat to slide smoothly on the linear guide rail; the rear side of the lens mounting seat is connected to the grating mounting plate through screws, and the grating mounting plate of the linear grating sensor is pasted on the grating mounting plate ruler, the linear grating sensor is fixed on the installation base plate through an L-shaped seat, and is kept parallel to the grating ruler;

The X oscillating lens in the optical path assembly is bonded to the X oscillating motor, the Y oscillating lens is bonded to the Y oscillating motor, and the focusing lens is mounted on the lens mount through a threaded ring. The beam combiner is fixed on the beam combiner mount by screws, and the beam combiner mount is fixed by screws on the first front extension end;

The second reflector is installed on the second reflector mounting seat by screws, and the second reflector mount is fixed on the installation base by screws, and the center of the second reflector and the beam combiner are at the same On the vertical line; the first reflector is installed on the first reflector mount, and is fixed on the 45-degree mirror mounting end by screws and the back cover of the first reflector, and one end of the 45-degree mirror mounting end is connected to the The third front extension end is connected by thread, and the other end is connected with the tooth locator by a pin, and the third front extension end is connected with the first front extension end by thread, so as to ensure that the first reflector, The centers of beam combiner, focusing lens and Y vibrating mirror are located on the same horizontal line;

The industrial lens in the monitoring assembly is connected to the CCD image sensor by threads, and the CCD image sensor is fixed on the CCD camera connection frame by screws, and the CCD camera connection frame can slide freely up and down in the groove of the CCD camera support frame , the holes of the CCD camera connecting frame and the holes of the CCD camera supporting frame are fixed together by screws, and the holes of the above CCD camera supporting frame can be fixed on a large operating table.

It can be seen from the above-mentioned technical solutions provided by the present invention that the cutting device provided by the embodiment of the present invention cuts the tooth hard tissue by laser, and adopts automatic digital cutting, so that the precision of the tooth preparation is higher and the doctor's work intensity is reduced; at the same time, it can The teeth are cut and shaped according to the clinical needs of various preparations, and real-time monitoring is carried out outside the mouth to further ensure the safety of the operation.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For Those of ordinary skill in the art can also obtain other drawings based on these drawings on the premise of not paying creative work.

Figure 1 is a schematic diagram of the overall structure of a cutting device for automatic tooth preparation in the oral cavity provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of the swing motor in the motor drive assembly according to the embodiment of the present invention;

3 is a schematic structural view of a linear motor in a motor drive assembly according to an embodiment of the present invention;

4 is a schematic diagram of an exploded structure of the optical path assembly described in the embodiment of the present invention;

Fig. 5 is a structural schematic diagram of the monitoring assembly described in the embodiment of the present invention;

Fig. 6 is another structural schematic diagram of the monitoring component according to the embodiment of the present invention;

Fig. 7 is a schematic diagram of the working optical path of the cutting device provided by the embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The cutting device provided by the embodiment of the present invention realizes the resection of dental pathological hard tissue through laser cutting. The optical path of the laser adopts two vibrating mirror modules driven by a swing motor, a lens driven by a linear motor, and two fixed reflectors. mirror and a beam combining mirror realize the change of cutting trajectory and the real-time monitoring of cutting process. The embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings. Figure 1 is a schematic diagram of the overall structure of the cutting device for intraoral micro automatic tooth preparation provided by the embodiment of the present invention. The device in Figure 1 mainly includes There are three parts: motor drive assembly, optical path assembly and monitoring assembly. The motor drive assembly mainly includes: X galvanometer swing motor 11, Y galvanometer swing motor 12, swing motor mount 13, and linear motor 14; the optical path assembly mainly includes: : X galvanometer 15, Y galvanometer 16, focusing lens 21, beam combiner 22, second reflector 23, first reflector 24; monitoring components mainly include: CCD image sensor 31, industrial lens 32, CCD camera support Frame 33, CCD camera connecting frame 34, each part assembly is described in detail below:

The X vibrating mirror swing motor 11 and the Y vibrating mirror swing motor 12 in the motor drive assembly are installed on the swing motor mount 13, as shown in Figure 2 is a structural schematic diagram of the swing motor in the motor drive assembly described in the embodiment of the present invention, the figure In 2: the cylindrical surface 11A of the X vibrating mirror swing motor 11 cooperates with the hole 11A-1 of the swing motor mounting base 13, and is fixed by the screw 13-1; The holes 12A-1 are matched and fixed by screws 13-2; the swing motor mounting base 13 is fixed on the surface 1A-1 of the installation base plate 1A by three screws 15.

As shown in FIG. 3 , it is a structural schematic diagram of the linear motor in the motor drive assembly according to the embodiment of the present invention. In FIG. 3 , the linear motor 14 is fixed on the linear motor mounting base 14A by screws, and the linear motor mounting base 14A is fixed on the mounting base 1A. superior. The linear motor 14 is connected with the motor connecting shaft 14C, and is fixed with the lens connecting frame 14D through a nut; the lens connecting frame 14D is fixed on the slider 14F-1 through the connecting shaft fixing nut 14E and the lens mount 21-A, 14F-1 and the linear guide rail 14F-2 make the slider 14F-1 slide smoothly on the linear guide rail 14F-2 with the lens mounting seat 21-A; the rear side of the lens mounting seat 21-A is installed with a screw and a grating The surface 14-B4 of the thin plate 14B is fixedly connected, and the grating installation thin plate 14B is pasted with the grating ruler 14B-1 of the linear grating sensor. To keep parallel, the grating ruler 14B-1, the grating sensor head 14B-2 and the sensor mounting base 14B-3 in the grating installation thin plate 14B are fixed and installed by screws.

As shown in Figure 4, it is a schematic diagram of the exploded structure of the optical path assembly according to the embodiment of the present invention. On the vibrating mirror swing motor 12, the focus lens 21 is installed on the lens mounting base 21-A through a threaded ring, and fixed through a threaded fixing ring 21-B, and the lens mounting base 21-A is fixed on the slider with a screw and a lens connecting frame 14D On 14F-1. In addition, as mentioned above, the lens connecting frame 14D is connected with the linear motor 14, so as to ensure that the movement of the lens mount 21-A is synchronized with the linear motor 14, and feeds back the moving distance of the focusing lens 21 through the grating 14B-1.

The beam combiner 22 is fixed on the beam combiner mount 22-A by screws, and the beam combiner mount 22-A is fixed on the first front protruding end 45 by screws; the second reflector 23 is mounted on the second On the reflector mount 23-A, the second reflector mount 23-A is fixed on the installation base plate 1A by screws, and the center of the second reflector 23 and the beam combiner 22 are on the same vertical line; the corresponding first reflector The mirror 24 is installed on the first reflector mounting seat 24-A, and is fixed on the 45-degree mirror mounting end 44 by screws and the back cover of the first reflector 24, and one end of the 45-degree mirror mounting end 44 is connected to the third front extension. The output end 43 is connected by thread, and the other end is connected with the tooth locator by a pin, and the third front extension end 43 is connected with the first front extension end 45 by thread, so as to ensure that the first reflecting mirror 24, the beam combining mirror 22, the focusing The centers of the lens 21 and the Y vibrating mirror 16 are on the same horizontal straight line. In addition, the above-mentioned tooth locator can be used to meet the positioning of common molars in the oral cavity.

As shown in Figure 5, it is a structural schematic diagram of the monitoring assembly described in the embodiment of the present invention, and as shown in Figure 6, it is another structural schematic diagram, in combination with Figures 5 and 6: in the monitoring assembly, the industrial lens 32 is screwed to the On the CCD image sensor 31, the face 31-D of the CCD image sensor 31 is fixed on the face 34-C of the CCD camera connecting frame 34 by screws, and the face 34-B of the CCD camera connecting frame 34 can be in the groove of the CCD camera supporting frame 33 Freely slide up and down in 33-B, the hole 34-A of CCD camera connecting frame 34 and the hole 33-B of CCD camera supporting frame 33 are fixed together by screw, the hole 33-D of above-mentioned CCD camera supporting frame can be fixed On a large operating platform, the center of the CCD image sensor 31 and the center of the second mirror 23 are on the same horizontal line.

In addition, as shown in FIG. 1, the above-mentioned device also includes a shell assembly, specifically including: a first cover shell 41, a second cover shell 42 and a third cover shell 46, and each of the above-mentioned cover shells constitutes the device The shell section, where:

The first cover shell 41 in the shell assembly is installed on the upper end of the installation base plate 1A, and the third cover shell 46 is fixed on the rear end of the installation base plate 1A, through the first cover shell 41 and the third cover shell 46 respectively The semi-circular groove cooperates to ensure that the rear seat of the Y vibrating mirror swing motor 12 is exposed outside the housing to ensure the heat dissipation of the motor;

The front ends of the first cover shell 41 and the third cover shell 46 are connected with the first front extension end 45 by screws, and the second cover shell 42 is fixed on one side of the installation base plate 1A by screws, and is close to the swing motor. On the mounting base 13, the rear seat of the X vibrating mirror swing motor 11 is exposed outside the housing through the cooperation of the respective semicircular grooves of the first cover shell 41 and the second cover shell 42 to ensure that the motor dissipates heat.

In practical applications, the optical path assembly and the motor drive assembly are fixed on the same installation base plate through screws and threads, and the relative positions of the assembly parts can be adjusted through the screws.

The components in the above-mentioned motor drive assembly and the optical path assembly are installed on the same base plate, and are packaged with a thin layer of metal material.

Based on the above-mentioned device, the motor drive component drives the optical path component to move, so that the vibrating mirror and the convex lens move, which specifically includes: through the swing motor to control the rotation of the two degrees of freedom of the vibrating mirror and the movement of one degree of freedom of the convex lens, the relative focus of the laser spot can be achieved. There are three degrees of freedom for the movement of the teeth to be cut; the above-mentioned motor drive assembly uses a small linear voice coil motor to drive the slider to move on the linear guide rail, and uses a small high-precision linear grating sensor for position feedback.

As shown in Figure 7, it is a schematic diagram of the working optical path of the cutting device provided by the embodiment of the present invention. In combination with Figure 7, the specific working process of the device is as follows:

The laser emitted from the femtosecond laser generator is called the incident laser; the incident laser is called the reflected laser after passing through the X vibrating mirror and the Y vibrating mirror; the reflected laser is called the focused laser after passing through the convex lens; the focused laser passes through the beam combiner And the first reflector is called the outgoing laser, and the outgoing laser acts on the teeth to realize tooth cutting. The laser light reflected from the tooth surface is reflected by the first mirror, the beam combining mirror and the second mirror, and then transmitted to the CCD charge-coupled device as monitoring light by the lens. The CCD charge-coupled device processes the monitoring light information and generates a monitoring light on the computer image.

To sum up, compared with the traditional tooth preparation surgical instruments, the device provided by the present invention adopts ultra-short pulse laser to cut tooth hard tissue. There is no noise during the cutting process, less damage to the adjacent tissues of the tooth, and the tooth surface is smooth after cutting. , Good microscopic characteristics; the use of automated digital cutting makes tooth preparation more precise, reduces the skill requirements for doctors, reduces the doctor's work intensity, facilitates the large-scale promotion of tooth preparation operations, and alleviates the low ratio of doctors to patients At the same time, it can cut and shape teeth in various preparation shapes according to clinical needs, and carry out real-time monitoring outside the mouth to further ensure the safety of surgery.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person familiar with the technical field can easily conceive of changes or changes within the technical scope disclosed in the present invention. Replacement should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (4)

1. in a kind of oral cavity miniature automatic tooth preparation topping machanism, described device includes motor drive component and light path group Part, it is characterised in that described device also includes monitor component, wherein：

The first oscillating motor and the second oscillating motor in the motor drive component is arranged on the first motor cabinet, the 3rd straight line Motor is arranged on the second motor cabinet, and second motor cabinet is fixed on positioning plate；3rd linear electric motors and motor Guide rod connects, and is fixed with lens mount link by nut, and the lens mount link passes through screw and lens mount It is fixed on slide block, makes the slide block with the lens mount on the line slideway using the slide block and line slideway Make smooth linear slide；The rear side of the lens mount is connected with light gratings by screw, posts straight line in the smooth gratings The grating scale of grating sensor, the linear grating sensor are fixed on the positioning plate by L-shaped seat, and with the light Grid chi keeping parallelism；

X galvanometer pieces in the optical path component are bonded on first oscillating motor, and Y galvanometer pieces are bonded in described second and swing On motor, condenser lenses are arranged on the lens mount by threaded collar, and two-phase Look mirror is fixed by screws in two-phase Look mirror On bearing, and before the two-phase Look mirror bearing is fixed by screws in first on external part；

Second reflecting mirror is arranged in reflecting mirror mounting seat by screw, and the reflecting mirror mounting seat is fixed by screws in described On positioning plate, second reflecting mirror is on same vertical curve with the center of the two-phase Look mirror；First reflecting mirror is installed On 45 degree of mirror installation ends, and it is fixed on 45 degree of mirror installation ends by screw and the bonnet of first reflecting mirror, institute Before stating one end and the 3rd of 45 degree of mirror installation ends, external part is threaded connection, and the other end is connected by pin with localizer, institute Before stating the 3rd, external part is connected with external part before described first by screw thread, so ensure first reflecting mirror, two-phase Look mirror, Condenser lenses and Y galvanometer pieces are centrally located on same level straight line；

Camera lens in the monitor component is threadedly attached on the imageing sensor of CCD charge-coupled image sensors, and the CCD is electric Lotus coupled apparatus is fixed by screws in CCD mounting seats, and the CCD mounting seats are fixed by screws on CCD guide rail brackets, and The center of the CCD charge-coupled image sensors is centrally located in same horizontal line with second reflecting mirror.

2. according to claim 1 in oral cavity miniature automatic tooth preparation topping machanism, it is characterised in that described device is also Including housing unit, wherein：

The first covering housing in the housing unit is arranged on the front end of the positioning plate, and the second covering housing is fixed on institute The rear end of positioning plate is stated, and housing and second is covered by described first cover the respective half slot cooperation of housing to ensure The back seat for stating the second oscillating motor is exposed at outside housing；

Before the front end and described first of the first covering housing and the second covering housing, external part is connected by screw, the Four covering housings are fixed by screws in the rear end of the positioning plate, and are close on first motor cabinet, and the 3rd covers Housing is fixed by screws in described first and covers on housing, and is close on first motor cabinet, covers by the described 3rd The back seat that lid housing and the respective half slot of the 4th covering housing cooperate with ensureing first oscillating motor is exposed at outside housing.

3. according to claim 1 in oral cavity miniature automatic tooth preparation topping machanism, it is characterised in that

The optical path component is fixed on above same base plate with what screw thread coordinated by screw with the motor drive component, and is led to The relative position crossed between screw adjusting part part.

4. according to claim 1 in oral cavity miniature automatic tooth preparation topping machanism, it is characterised in that

The optical path component is installed on same base plate with the part in the motor drive component, and golden using thin one layer Category material is encapsulated.