Bone shaping instrument for oral and maxillofacial surgery

Abstract

The present invention discloses a bone shaping instrument for oral and maxillofacial surgery, including a support with an installation cavity inside; a waste liquid collection tank fixed on the top wall of the support; a support column fixedly connected to the support, and a controller on the support column; a work surface horizontally arranged just above the waste liquid collection tank, and liquid permeable holes evenly distributed on the work surface; a lifting part arranged on the support column, which has a lifting end and a manual operation end, and the work surface is connected to the lifting end; a fixing part arranged on the work surface; a cutting part arranged on the support column, and the cutting part is composed of a first speed regulating motor and a saw blade; a shaping part arranged in the installation cavity of the support, and the shaping part includes a second speed regulating motor, and the driving shaft of the second speed regulating motor horizontally passes through the side wall of the support, and a shaping grinding head is coaxially arranged at the outer end of the driving shaft; and a power supply is arranged in the installation cavity of the support. The advantage of the present invention is that it can easily realize the cutting and grinding of the bone body to be shaped during oral and maxillofacial bone transplantation, and realize multiple uses of one machine.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a bone shaping instrument for oral and maxillofacial surgery. Background Art

[0002] Jaw lesions are a common disease in oral and maxillofacial surgery, which are often caused by jaw tumor lesions and non-tumor lesions (such as jaw cysts, trauma or osteomyelitis). In severe cases, they can lead to jaw defects. If necessary, autologous bone transplantation (such as fibula transplantation or iliac bone transplantation) has to be performed to restore the jaw shape and function.

[0003] Autologous bone transplantation requires bone reshaping and reconstruction of the jaw. Because the jaw is located in the head and face, it has a unique "arch" anatomical structure and participates in chewing, pronunciation and maintaining facial beauty together with the upper and lower teeth. Therefore, when bone transplantation is performed on jaw defects, accurate jaw reshaping is crucial to maintaining the above functions.

[0004] At present, oral and maxillofacial bone transplantation surgery is risky and difficult. Although the application of preoperative digitalization has provided assistance in formulating surgical plans, the specific implementation process often faces great difficulties. The existing tools used for bone shaping are mostly handheld electric or manual grinders and bone tongs. The operation is time-consuming and labor-intensive and cannot accurately shape the bone. Improper operation often damages bone tissue and vascular muscle tissue, and may even pose a safety hazard to the operator, greatly increasing the risk of bone shaping surgery. Summary of the invention

[0005] The present invention aims to provide a bone shaping instrument for oral and maxillofacial surgery.

[0006] To achieve the above purpose, the present invention can adopt the following technical solutions:

[0007] The bone shaping instrument for oral and maxillofacial surgery of the present invention comprises:

[0008] A support having a mounting cavity therein;

[0009] The waste liquid collection tank is an upper opening structure and is fixed on the top wall of the support;

[0010] A supporting column, fixedly connected to the support, and provided with a controller;

[0011] A work surface is horizontally arranged just above the waste liquid collection tank, and the work surface is evenly distributed with liquid permeable holes;

[0012] A lifting part is arranged on the supporting column, and has a lifting end and a manual operation end. The work surface is connected to the lifting end of the lifting part, and is driven by the lifting part to move up and down;

[0013] A fixing part, arranged on the work surface, used to fix the bone to be shaped so that it moves up and down along with the work surface;

[0014] A cutting part is arranged on the supporting column between the controller and the work surface and is electrically connected to the controller. The cutting part is composed of a first speed regulating motor connected to the supporting column and a saw blade coaxially fixed to the end of the driving shaft of the first speed regulating motor. The saw blade is arranged vertically and directly above the fixing part.

[0015] A shaping part is arranged in the mounting cavity of the support and is electrically connected to the controller, the shaping part comprises a second speed regulating motor fixed in the mounting cavity of the support, a driving shaft of the second speed regulating motor horizontally passes through the side wall of the support, and a shaping grinding head is coaxially arranged at the outer end of the driving shaft of the second speed regulating motor; and

[0016] A power supply is arranged in the mounting cavity of the support and is used to supply power to the controller, the cutting part and the shaping part.

[0017] Preferably, the lifting part includes a longitudinal slide groove opened on the supporting column, and a slider arranged in the longitudinal slide groove, the slider is driven by a gear rack set installed in the supporting column to slide up and down along the longitudinal slide groove, the gear shaft of the gear rack set extends outward from the supporting column, and an operating handle is provided at its outer end, and the work table is fixedly connected to the slider and driven by the slider to translate up and down.

[0018] Preferably, the fixing part includes an angle adjustment disk of a semicircular structure fixed on the work surface, the angle adjustment disk has an angle mark, a horizontally rotating width adjustment ruler is hinged at the center of the angle adjustment disk, a horizontal slide groove is provided on the width adjustment ruler along the length direction, a length mark is provided on one long side of the horizontal slide groove, and a pair of clamping units for clamping the bone to be shaped are slidably provided in the horizontal slide groove.

[0019] Preferably, the clamping unit includes a clamping seat of a rectangular structure, the length direction of the clamping seat is consistent with the width direction of the horizontal slide groove, a sliding block sliding along the horizontal slide groove is fixedly connected to the bottom surface of the clamping seat, a clamping groove is opened along the length direction on the top surface of the clamping seat, a push rod is vertically screwed through one side wall of the clamping groove, a screw handle is provided at the outer end of the push rod, and a clamping plate moving forward and backward in the clamping groove is vertically fixed at the inner end through a bearing seat.

[0020] Preferably, a rubber anti-skid pad or a silicone anti-skid pad is attached to the clamping surface of the clamping plate and the inner side surface of the clamping groove opposite to the clamping plate.

[0021] Preferably, a connecting seat is coaxially fixed to the end of the driving shaft of the first speed regulating motor, at least two groups of internal threaded connecting holes are provided on the outer end surface of the connecting seat, and a connecting through hole corresponding to the internal threaded connecting hole is provided on the saw blade, and the saw blade is fixed to the connecting seat by a connecting bolt that passes through the connecting through hole and is screwed to the internal threaded connecting hole.

[0022] Preferably, an elastic speed regulating unit that moves up and down is provided on the supporting column, and the first speed regulating motor is connected to the supporting column through the elastic speed regulating unit; the elastic speed regulating unit includes a motor slide slot vertically opened on the supporting column, and a connecting block connected to the first speed regulating motor is slidably provided in the motor slide slot, and a guide rod that is vertically downwardly penetrated on the lower end surface of the motor slide slot is provided on the lower surface of the connecting block, and a return spring is sheathed on the guide rod, and the upper end of the return spring is fixedly connected to the connecting block, and the lower end of the return spring is fixedly connected to the lower end surface of the motor slide slot; a pressure electric signal sensor that collects and converts voltage analog quantities at both ends of the resistance value reflecting pressure changes is provided on the upper end surface of the motor slide slot, and the lower end collecting surface gap of the pressure electric signal sensor is set above the upper top surface of the connecting block. The pressure electric signal sensor is used to convert the upward top pressure of the connecting block into a voltage digital quantity and transmit it to the controller, and then the controller controls the speed of the first speed regulating motor.

[0023] Preferably, a waste collection trough with an upper opening fixed on the side wall of the support is provided directly below the shaping grinding head.

[0024] Preferably, a shield is provided above the saw blade, and the shield is connected to the outer wall of the controller through an upward and downward telescopic rod.

[0025] Preferably, a C-shaped buckle for fixing a saline bottle is provided on the outer wall of the controller, a spray hose is provided on the outer wall of the controller below the C-shaped buckle, the upper end of the spray hose has a bottle stopper puncture and drainage needle for piercing into the saline bottle, the lower end of the spray hose is adapted to be connected with a spray head fixed on the shield, a peristaltic pump is provided on the outer wall of the controller below the C-shaped buckle, the middle part of the tube body of the spray hose is installed on the peristaltic pump, and the peristaltic pump drives the saline in the saline bottle to be sucked and sprayed onto the saw blade.

[0026] The advantage of the present invention is that the controller is used to control the cutting part and the shaping part on the support, so that the cutting and grinding of the bone to be shaped during oral and maxillofacial bone transplantation can be easily realized, and one machine can be used for multiple purposes; at the same time, the work table connected to the supporting column by the lifting part, and the fixing part arranged on the work table and moving up and down with it, can easily clamp the bone to be shaped, and the bone to be shaped can be cut at any angle according to needs, thereby ensuring the accurate shaping and efficient grinding of the bone to be shaped; in addition, the elastic speed regulating unit connected to the cutting part on the supporting column can also make the cutting part have a certain elasticity of upward movement, so that when the bone to be shaped is When the shaped bone moves upward horizontally with the work table to push the saw blade of the cutting part, the saw blade can move upward together with the first speed-regulating motor, pressing the pressure electric signal sensor located on the upper end face of the motor slide slot. The pressure electric signal sensor converts the collected voltage analog quantity into a digital quantity, which is then transmitted to the corresponding port of the controller for digital calculation, and then the calculation output is used to control the speed of the first speed-regulating motor to increase. After cutting off the bone to be shaped, the first speed-regulating motor quickly rebounds downward and disconnects from the pressure electric signal sensor, thereby quickly reducing the speed of the first speed-regulating motor, greatly improving the cutting accuracy and operating safety, and reducing surgical risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention.

[0028] Figure 2 yes Figure 1 Top view of the work surface in the middle.

[0029] Figure 3 yes Figure 1 Schematic diagram of the connection between the work surface and the supporting column.

[0030] Figure 4 yes Figure 1 Top view of the middle fixing part.

[0031] Figure 5 yes Figure 1 Right side view of the clamping unit.

[0032] Figure 6 yes Figure 1 Schematic diagram of the connection between the first speed regulating motor and the saw blade.

[0033] Figure 7 yes Figure 1 Schematic diagram of the connection between the first speed regulating motor and the supporting column. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] In addition, in the present invention, the descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0037] like Figure 1 As shown, the bone shaping instrument for oral and maxillofacial surgery of the present invention includes a support 1, a waste liquid collection tank 2, a support column 3, a work table 4, a lifting part 5, a fixing part 6, a cutting part 7, a shaping part 8 and a power supply 9.

[0038] Specifically, the support 1 is a rectangular structure, and has a mounting cavity for mounting equipment therein, and the mounting cavity is a closed structure to prevent the equipment therein from being soaked and damaged. In addition, universal wheels with brake devices (not shown in the figure) can be provided at the four corners of the bottom of the support 1, so as to facilitate the movement of the support 1 as needed.

[0039] The waste liquid collection tank 2 is a rectangular structure tank cavity with an upper opening, and the size of its cross section should be consistent with the size of the top wall of the support 1, so that it can be fixed on the top wall of the support 1 accordingly, improving the overall aesthetics. In addition, a drainage pipe (not shown in the figure) connected to the bottom of the tank cavity can be set on one of the side walls of the waste liquid collection tank 2, and a manual opening and closing valve can be set on the drainage pipe, so that the waste liquid accumulated in the waste liquid collection tank 2 can be easily discharged.

[0040] The support column 3 is a vertically arranged column, which is fixedly connected to the support 1, and is most preferably fixedly connected to the rear side wall of the support 1. The support column 3 has a controller 10 for controlling the operation of the bone shaping instrument according to the pressure signal (the controller 10 adopts the stm32F103C8T6 chip). The controller 10 should have calculation processing and control output functions. The front wall of the controller 10 should be provided with a main switch 11, a display screen 12 and a control panel. Of course, the display screen 12 can also be directly set as a touch screen, so there is no need to set up a control panel.

[0041] The work surface 4 is horizontally arranged just above the waste liquid collection tank 2, and the work surface 4 is evenly distributed with liquid permeable holes 13 (such as Figure 2 As shown), the size of the work surface 4 should be smaller than or equal to the cross-sectional size of the groove cavity of the waste liquid collection tank 2, so as to ensure that the liquid permeable hole 13 is also directly above the groove cavity of the waste liquid collection tank 2, so that the waste liquid on the work surface 4 flows directly downward into the waste liquid collection tank 2.

[0042] The lifting part 5 is arranged on the supporting column 3, and has a lifting end and a manual operation end. The work surface 4 should be connected to the lifting end of the lifting part 5, so that the lifting part 5 can be driven to move up and down. Figure 3 As shown, the lifting part 5 includes a longitudinal slide groove 5.1 opened on the supporting column 3, and a slider 5.2 arranged in the longitudinal slide groove 5.1. The slider 5.2 is driven by a gear rack set 5.3 installed in the supporting column 3 to slide up and down along the longitudinal slide groove 5.1. The gear shaft of the gear rack set 5.3 extends outward from the supporting column 3, and an operating handle 5.4 for convenient rotation of the gear shaft is provided at its outer end. The slider 5.2 is the lifting end of the lifting part 5, and the operating handle 5.4 is the manual operating end of the lifting part 5. At this time, the work surface 4 should be fixedly connected to the slider 5.2, so that the working surface 4 can be controlled to move up and down by the operating handle 5.4.

[0043] The fixing part 6 is arranged on the work surface 4, and is used to fix the bone to be shaped, so that the bone to be shaped moves up and down with the work surface 4. Figure 4As shown, the fixing part 6 comprises an angle adjustment plate 6.1 of a semicircular structure fixed on the work surface 4, the angle adjustment plate 6.1 is provided with an angle mark 6.2, a horizontally rotating width adjustment ruler 6.3 is hinged at the center of the angle adjustment plate 6.1, a horizontal slide groove 6.4 is provided on the width adjustment ruler 6.3 along the length direction, a length mark 6.5 is provided on one long side of the horizontal slide groove 6.4, and a pair of clamping units 6.6 for clamping the bone body to be shaped are slidably provided in the horizontal slide groove 6.4; .4, thereby achieving the clamping and fixation of the bones to be shaped of different lengths, and the angle of the bones to be shaped can be adjusted by horizontally rotating the width adjustment ruler 6.3 on the angle adjustment disk 6.1. Note that at this time, a fixing screw should also be vertically threaded through the width adjustment ruler 6.3, so that after the width adjustment ruler 6.3 is rotated into place with the hinge axis at the center of the angle adjustment disk 6.1, the fixing screw can be screwed downward so that its lower end is fixed on the top surface of the angle adjustment disk 6.1, thereby fixing the rotation position of the width adjustment ruler 6.3. Further, as Figure 5 As shown, the clamping unit 6.6 includes a clamping seat 6.6.1 of a rectangular structure, the length direction of the clamping seat 6.6.1 is consistent with the width direction of the horizontal slide 6.4, a slider 6.6.2 is fixedly connected to the bottom surface of the clamping seat 6.6.1 and slides along the horizontal slide 6.4, and a clamping groove 6.6.3 is opened on the top surface of the clamping seat 6.6.1 along the length direction. The clamping groove 6.6.3 is a through groove that runs through the left and right sides, and a push rod 6.6.4 is vertically screwed and penetrated on one side wall of the clamping groove 6.6.3, which is located at the clamping The outer end of the push rod 6.6.4 outside the groove 6.6.3 is provided with a screw handle 6.6.5, and the inner end of the push rod 6.6.4 inside the clamping groove 6.6.3 is vertically fixed with a splint 6.6.7 through a bearing seat 6.6.6. The bearing seat 6.6.6 is coaxially arranged with the push rod 6.6.4, which can ensure that the rotational force is eliminated when the push rod 6.6.4 is screwed, and only the push splint 6.6.7 moves forward and backward in the clamping groove 6.6.3, ensuring that the splint 6.6.7 will not rotate with the push rod 6.6.4. In addition, a rubber anti-skid pad 6.6.8 can be attached to the clamping surface of the splint 6.6.7 and the inner side surface of the clamping groove 6.6.3 opposite to the clamping surface of the splint 6.6.7. The rubber anti-skid pad 6.6.8 can also be replaced with a silicone anti-skid pad, which can increase the friction when clamping the bone body to be shaped and improve the clamping effect.

[0044] The cutting part 7 is arranged on the supporting column 3 between the controller 10 and the work surface 4 and is electrically connected to the controller 10. The cutting part 7 should have a cutting end, so that the cutting end of the cutting part 7 can be controlled by the controller 10 to complete the cutting of the bone to be shaped fixed on the fixing part 6. Specifically, the cutting part 7 is composed of a first speed regulating motor 7.1 connected to the supporting column 3, and a saw blade 7.2 coaxially fixed to the end of the driving shaft of the first speed regulating motor 7.1. The saw blade 7.2 is the cutting end of the cutting part 7 and is vertically arranged just above the fixing part 6.

[0045] Further, in order to facilitate the replacement of saw blade 7.2, as Figure 6 As shown, a connecting seat 14 can also be coaxially fixedly connected to the end of the driving shaft of the first speed regulating motor 7.1, and at least two groups of internal threaded connecting holes 15 are provided on the outer end surface of the connecting seat 14, and connecting through holes 16 corresponding to the internal threaded connecting holes 15 are provided on the saw blade 7.2. The saw blade 7.2 is fixedly connected to the connecting seat 14 by connecting bolts that pass through the connecting through holes 16 and are screwed and fixed to the internal threaded connecting holes 15, thereby realizing the detachable fixing of the saw blade 7.2 to the end of the driving shaft of the first speed regulating motor 7.1.

[0046] Furthermore, in order to enable the first speed regulating motor 7.1 to automatically change the rotation speed according to the actual operation, an elastic speed regulating unit 17 capable of moving up and down should be provided on the support column 3, and the first speed regulating motor 7.1 should be connected to the support column 3 through the elastic speed regulating unit 17. Specifically, Figure 7As shown, the elastic speed regulating unit 17 comprises a motor slide 17.1 vertically opened on the supporting column 3, a connecting block 17.2 connected to the first speed regulating motor 7.1 is slidably arranged in the motor slide 17.1, a guide rod 17.3 vertically downwardly penetrated on the lower end surface of the motor slide 17.1 is arranged on the lower surface of the connecting block 17.2, and a return spring 17.4 is sheathed on the guide rod 17.3, the upper end of the return spring 17.4 is fixedly connected to the connecting block 17.2, and the lower end thereof is fixedly connected to the lower end surface of the motor slide 17.1, so that when the connecting block 17.2 slides upward under the force, once the force disappears, the return spring 17.4 will pull the connecting block 17.2 to slide downward under the guidance of the guide rod 17.3, so that the first speed regulating motor 7.1 which is pushed upward will automatically return to its position again; in addition, a pressure rod connected to the controller 10 is also arranged on the upper end surface of the motor slide 17.1 The electric signal sensor 17.5 (the pressure electric signal sensor 17.5 adopts the high-precision and high-gain 24-bit A / D conversion chip HX711 as the core, and a bridge sensor composed of resistor sheets as the sampling element), the lower end collection surface of the pressure electric signal sensor 17.5 should be set above the upper top surface of the connecting block 17.2, when the connecting block 17.2 slides upward to push the pressure electric signal sensor 17.5, the pressure electric signal sensor 17.5 will convert the top pressure into different resistance values, collect the voltage signal changing at both ends of the resistor and transmit it to the A / D conversion chip HX711 (i.e., the pressure electric signal sensor 17.5) for digital-to-analog conversion, and then transmit the converted digital quantity to the controller 10, and control the first speed regulating motor 7.1 to speed up its rotation speed through the relevant calculation of the controller 10, so that the greater the pressure on the pressure electric signal sensor 17.5, the faster the rotation speed of the first speed regulating motor 7.1. At this time, once the saw blade 7.2 on the first speed regulating motor 7.1 cuts off the bone to be shaped, the first speed regulating motor 7.1, the saw blade 7.2 and the connecting block 17.2 will move downward and return to their original positions under the pulling action of the return spring 17.4. Since the lower end collection surface of the pressure electric signal sensor 17.5 and the upper top surface of the connecting block 17.2 are set with a gap, the downward movement distance of the first speed regulating motor 7.1, the saw blade 7.2 and the connecting block 17.2 is very small and can be ignored. The purpose of the return spring 17.4 is to pull the connecting block 17.2 downward to make it aligned with the pressure electric signal sensor. The collecting surface of the device 17.5 is disconnected, so that the pressure electric signal sensor 17.5 is not supported upward. At this time, the voltage signal collected by the pressure electric signal sensor 17.5 will change sharply, and the data transmitted to the controller 10 after digital-to-analog conversion will quickly obtain a logical result in the calculation that reflects the disconnection of the downward pulling connection block 17.2 and the collecting surface of the pressure electric signal sensor 17.5. The controller 10 will then quickly control the first speed regulating motor 7.1 to reduce the speed, thereby greatly improving the cutting speed of the bone to be shaped, while improving the cutting accuracy and operation safety, and reducing the risk of surgery.

[0047] The shaping part 8 is arranged in the mounting cavity of the support 1 and is electrically connected to the controller 10. The shaping part 8 should have a grinding end extending out of the mounting cavity, so that the bone to be shaped after cutting can be ground. Specifically, the shaping part 8 includes a second speed regulating motor 8.1 fixed in the mounting cavity of the support 1, and the driving shaft of the second speed regulating motor 8.1 horizontally passes through the side wall of the support 1. A shaping grinding head 8.2 is coaxially arranged at the outer end of the driving shaft of the second speed regulating motor 8.1, and the shaping grinding head 8.2 is the grinding end of the shaping part 8. Furthermore, in order to avoid the powder or debris of the bone to be shaped polished by the shaping grinding head 8.2 from splashing and scattering, an upper opening waste collection trough 18 fixed on the side wall of the support 1 can also be provided directly below the shaping grinding head 8.2, and the shaping grinding head 8.2 should be located directly above the notch of the waste collection trough 18. In addition, a protective cover (not shown in the figure) can be provided on the outer side of the shaping grinding head 8.2. The protective cover can be fastened to the outer side wall of the support 1 in the form of a movable buckle, and of course, it can also be connected to the outer side wall of the support in the form of a hinge with the lower edge flipped upward.

[0048] The power supply 9 is arranged in the installation cavity of the support 1, and is used to power the controller 10, the cutting part 7 and the shaping part 8. Specifically, the power supply 9 can be a battery, and a charging port for charging the power supply 9 is arranged on the side wall of the support 1 (not shown in the figure).

[0049] In addition, a shield 19 can be set above the saw blade 7.2. The shield 19 should be a transparent cover to prevent powder from splashing and accidentally injuring the operator when the saw blade 7.2 cuts the bone to be shaped. At the same time, the shield 19 should be connected to the outer wall of the controller 10 through an upward and downward telescopic rod 20, so that the shield 19 can be moved upward when the saw blade 7.2 is replaced to prevent the shield 19 from affecting the replacement of the saw blade 7.2. Further, a lighting lamp 21 can be set on the bottom surface of the controller 10 to provide lighting during the cutting operation of the bone to be shaped. Furthermore, a C-shaped buckle 23 for fastening the saline bottle 22 may be provided on the outer wall of the controller 10. The C-shaped buckle 23 is mounted above the controller 10 through a bracket. A spray hose 24 is provided on the outer wall of the controller 10 below the C-shaped buckle 23. The spray hose 24 can be fixed to the outer wall of the controller 10 by a clip provided on the outer wall of the controller 10. In addition, the spray hose 24 can adopt a commercially available disposable oral water tube, so that it can be discarded after each operation is completed, and a new spray hose 24 can be replaced during the next operation to ensure its sterility. The upper end of the spray hose 24 has a bottle stopper puncture and drainage needle 25 for piercing into the saline bottle 22, and the lower end thereof is adapted to be connected with a spray head 26 fixed on the shield 19; at the same time, a peristaltic pump 27 is provided on the outer wall of the controller 10 just below the C-shaped buckle 23, and the middle part of the tube body of the spray hose 24 is installed on the peristaltic pump 27, so that the peristaltic pump 27 can drive the spray hose 24 to suck the saline in the saline bottle 22 and spray it onto the saw blade 7.2 through the spray head 26, so that the saline can be sprayed onto the saw blade 7.2 when the saw blade 7.2 rotates at a high speed to cut the bone to be shaped, so as to prevent the heat generated by the saw blade 7.2 rubbing against the bone to be shaped from burning the bone to be shaped.

[0050] In actual use: First, adjust the distance between the two clamping units 6.6 on the fixing part 6 according to the length of the bone to be shaped, so as to clamp the bone to be shaped on the fixing part 6, and adjust the rotation angle of the bone to be shaped according to the cutting requirements.

[0051] Then, adjust the shield 19 downward so that it covers the saw blade 7.2, and turn on the main switch 11 on the controller 10, so that the first speed regulating motor 7.1 is controlled to start through the controller 10 (that is, the control output end of the controller 10 is electrically connected to the control input end of the first speed regulating motor 7.1), driving the saw blade 7.2 to rotate.

[0052] Afterwards, the operating handle 5.4 of the lifting part 5 is manually adjusted to raise the work surface 4 connected to the lifting part 5, thereby driving the bone to be shaped clamped on the fixing part 6 to rise and contact the lower end of the saw blade 7.2, and the bone to be shaped is cut by the rotation of the saw blade 7.2.

[0053] When the bone to be shaped is relatively hard, the work table 4 can be further adjusted upward, so that the bone to be shaped pushes the saw blade 7.2 to move upward, thereby pushing the first speed regulating motor 7.1 and the connecting block 17.2 to move upward, so that the connecting block 17.2 presses the pressure electric signal sensor 17.5 on the upper end surface of the motor slide slot 17.1, and the signal collection end of the pressure electric signal sensor 17.5 is electrically connected to the A / D conversion chip HX711 (i.e., the pressure electric signal sensor 17.5) to perform analog-to-digital conversion, thereby transmitting the collected and converted digital signal to the controller 10, and the controller 10 processes the voltage signal and controls the first speed regulating motor 7.1 to increase the speed, thereby accelerating the cutting of the bone to be shaped. The greater the pressure on the pressure electric signal sensor 17.5, the faster the speed of the first speed regulating motor 7.1, thereby greatly improving the cutting speed of the bone to be shaped.

[0054] When the bone to be shaped is cut by the saw blade 7.2, the bone to be shaped will no longer push the saw blade 7.2 upward, so that the first speed-regulating motor 7.1, the saw blade 7.2 and the connecting block 17.2 will move slightly downward under the pulling action of the return spring 17.4, disconnecting the contact between the connecting block 17.2 and the lower end collecting surface of the pressure electric signal sensor 17.5. At this time, the pressure electric signal sensor 17.5 is no longer under pressure, and the voltage signal transmitted to the controller 10 will reflect the logical result of disconnecting the contact between the connecting block 17.2 and the collecting surface of the pressure electric signal sensor 17.5. The controller 10 will then quickly control the first speed-regulating motor 7.1 to reduce the rotation speed, thereby improving cutting accuracy and operating safety and reducing surgical risks.

[0055] In addition, during the process of the saw blade 7.2 cutting the bone to be shaped, a saline bottle 22 can be fixed on the C-shaped buckle 23, and a new spray hose 24 can be taken, and the bottle stopper puncture drainage needle 25 at the upper end of the spray hose 24 is connected to the saline bottle 22, and the lower end of the spray hose 24 is connected to the spray head 26 on the shield 19 through the adapter plug, and the middle part of the spray hose 24 is loaded into the peristaltic pump 27. At this time, the saline in the saline bottle 22 can be sucked by controlling the peristaltic pump 27 and sprayed on the saw blade 7.2, so as to achieve the purpose of lowering the temperature of the saw blade 7.2 and prevent the saw blade 7.2 from burning the bone to be shaped due to excessive temperature; at the same time, the saline will not cause damage to the bone to be shaped, and the waste liquid after spraying will directly flow through the liquid permeable hole 13 on the workbench 4 to the waste liquid collecting tank 2 for storage. When a certain amount of waste liquid accumulates, it can also be discharged through the drain pipe on the side wall of the waste liquid collecting tank 2.

[0056] When the cutting of the bone to be shaped is completed, the controller 10 can be used to control the second speed regulating motor 8.1 of the shaping part 8 to work (that is, the control output end of the controller 10 is electrically connected to the control input end of the second speed regulating motor 8.1), thereby driving the shaping grinding head 8.2 to rotate, and then grinding the bone to be shaped after the cutting is completed; of course, an on-off switch (not shown in the figure) for controlling the on-off of the second speed regulating motor 8.1 and a speed regulating knob (not shown in the figure) for adjusting the speed of the second speed regulating motor 8.1 can also be directly set on the side wall of the support 1. At this time, the power supply 9 can be directly electrically connected to the second speed regulating motor 8.1 to supply power to it.

Claims

1. A bone shaping instrument for oral and maxillofacial surgery, Features: include A support having a mounting cavity therein; The waste liquid collection tank is an upper opening structure and is fixed on the top wall of the support; A supporting column, fixedly connected to the support, and provided with a controller; A work surface is horizontally arranged just above the waste liquid collection tank, and the work surface is evenly distributed with liquid permeable holes; A lifting part is arranged on the supporting column, and has a lifting end and a manual operation end. The work surface is connected to the lifting end of the lifting part, and is driven by the lifting part to move up and down; A fixing part, arranged on the work surface, used to fix the bone to be shaped so that it moves up and down along with the work surface; A cutting part is arranged on the supporting column between the controller and the work surface and is electrically connected to the controller. The cutting part is composed of a first speed regulating motor connected to the supporting column and a saw blade coaxially fixed to the end of the driving shaft of the first speed regulating motor. The saw blade is arranged vertically and directly above the fixing part. A shaping part is arranged in the mounting cavity of the support and is electrically connected to the controller, the shaping part comprises a second speed regulating motor fixed in the mounting cavity of the support, a driving shaft of the second speed regulating motor horizontally passes through the side wall of the support, and a shaping grinding head is coaxially arranged at the outer end of the driving shaft of the second speed regulating motor; and A power supply, disposed in the mounting cavity of the support, for supplying power to the controller, the cutting part and the shaping part; Wherein, the fixing part comprises an angle adjustment disk of a semicircular structure fixed on the work surface, the angle adjustment disk has an angle mark, a horizontally rotating width adjustment ruler is hinged at the center of the angle adjustment disk, a horizontal slide groove is provided on the width adjustment ruler along the length direction, a length mark is provided on one long side of the horizontal slide groove, and a pair of clamping units for clamping the bone to be shaped are slidably provided in the horizontal slide groove; An elastic speed regulating unit that moves up and down is arranged on the supporting column, and the first speed regulating motor is connected to the supporting column through the elastic speed regulating unit, and the elastic speed regulating unit includes a motor slide groove vertically opened on the supporting column, and a connecting block connected to the first speed regulating motor is slidably arranged in the motor slide groove, and a guide rod that is vertically downwardly penetrated on the lower end surface of the motor slide groove is arranged on the lower surface of the connecting block, and a return spring is sleeved on the outer surface of the guide rod, and the upper end of the return spring is fixedly connected to the connecting block, and the lower end of the return spring is fixedly connected to the lower end surface of the motor slide groove, and a pressure electric signal sensor that collects and converts the voltage analog quantity of the two ends of the resistance value that responds to the pressure change is arranged on the upper end surface of the motor slide groove, which is used to convert the upward top pressure of the connecting block into a voltage digital quantity and transmit it to the controller, and the lower end collection surface gap of the pressure electric signal sensor is arranged above the upper top surface of the connecting block.

2. The bone shaping instrument for oral and maxillofacial surgery according to claim 1, Features: The lifting part includes a longitudinal slide groove opened on the supporting column and a slider arranged in the longitudinal slide groove. The slider is driven by a gear rack set installed in the supporting column to slide up and down along the longitudinal slide groove. The gear shaft of the gear rack set extends outward from the supporting column, and an operating handle is arranged at its outer end. The work table is fixedly connected to the slider and is driven by the slider to translate up and down.

3. The bone shaping instrument for oral and maxillofacial surgery according to claim 1, Features: The clamping unit includes a clamping seat with a rectangular structure, the length direction of the clamping seat is consistent with the width direction of the horizontal slide groove, a sliding block sliding along the horizontal slide groove is fixedly connected to the bottom surface of the clamping seat, a clamping groove is opened along the length direction on the top surface of the clamping seat, a push rod is vertically screwed through one side wall of the clamping groove, a screw handle is provided at the outer end of the push rod, and a clamping plate moving forward and backward in the clamping groove is vertically fixed at the inner end through a bearing seat.

4. The bone shaping instrument for oral and maxillofacial surgery according to claim 3, Features: A rubber anti-skid pad or a silicone anti-skid pad is attached to the clamping surface of the clamping plate and the inner side surface of the clamping groove opposite to the clamping plate.

5. The bone shaping instrument for oral and maxillofacial surgery according to claim 1, Features: A connecting seat is coaxially fixedly connected to the end of the driving shaft of the first speed regulating motor, and at least two groups of internal threaded connecting holes are provided on the outer end surface of the connecting seat. A connecting through hole corresponding to the internal threaded connecting hole is provided on the saw blade, and the saw blade is fixedly connected to the connecting seat by a connecting bolt that passes through the connecting through hole and is screwed and fixed to the internal threaded connecting hole.

6. The bone shaping instrument for oral and maxillofacial surgery according to claim 1, Features: A waste collection trough with an upper opening fixed on the side wall of the support is arranged directly below the shaping grinding head.

7. The bone shaping instrument for oral and maxillofacial surgery according to claim 1, Features: A blocking cover is provided above the saw blade, and the blocking cover is connected to the outer wall of the controller through an upward and downward telescopic rod.

8. The bone shaping instrument for oral and maxillofacial surgery according to claim 7, Features: A C-shaped buckle for fixing a saline bottle is arranged on the outer wall of the controller, a spray hose is arranged on the outer wall of the controller below the C-shaped buckle, the upper end of the spray hose has a bottle stopper puncture and drainage needle for piercing into the saline bottle, the lower end of the spray hose is adapted to be connected with a spray head fixed on the shield, a peristaltic pump is arranged on the outer wall of the controller below the C-shaped buckle, the middle part of the tube body of the spray hose is installed on the peristaltic pump, and the peristaltic pump drives the saline in the saline bottle to be sucked and sprayed onto the saw blade.

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