Intelligent stress monitoring system for oral orthognathic surgery

Abstract

The embodiment of the invention provides an intelligent stress monitoring system for oral orthognathic surgery, which is applied to the field of stress monitoring and comprises a strain screw, a mounting frame and a pressure monitoring module, the strain screw is used for fixing the mounting rack at a specified position and measuring an axial force borne by the strain screw; a thread is arranged outside the strain screw; a stress pull rod and a stress detection part are arranged in the strain screw; the stress pull rod is used for applying downward pulling force to the stress detection part, and a strain gauge for detecting deformation is arranged on the stress detection part; the pressure monitoring module is used for collecting and analyzing data of the strain gauges and displaying axial force borne by the strain screws. According to the technical scheme, a doctor can monitor the axial force borne by the screw in real time in the operation process, and therefore it is guaranteed that the fixing position and force of the screw in the jaw bone reach the optimal state.

Description

Technical Field

[0001] The invention relates to the field of force monitoring, and in particular to an intelligent force monitoring system for oral orthognathic surgery. Background Art

[0002] Traditional orthognathic surgery does not have the function of monitoring the force of the screws. Doctors cannot accurately understand the fixation state and stress distribution of the screws in the jaw. Doctors can only place and adjust the screws based on experience during surgery, which may lead to instability in the surgical effect, increase the risk of surgical failure and complications, and require more frequent reviews and adjustments. The fixation state and stress distribution of the screws cannot be monitored, and doctors need to review and adjust more frequently, which not only increases the workload of doctors and patients, but may also increase additional medical costs and risks. Ordinary screws lack intelligent support, which limits their application and development in orthognathic surgery. In addition, the screws are subjected to torsion and tension when working, and the strain screws in the prior art cannot accurately measure the tension of the screws. Therefore, there is an urgent need to provide an intelligent force monitoring system for orthognathic surgery to help medical staff improve their work accuracy. Summary of the invention

[0003] In view of the above technical problems, the present invention provides an intelligent force monitoring system for oral orthognathic surgery, comprising: a strain screw, a mounting frame, and a pressure monitoring module;

[0004] The strain screw is used to fix the mounting frame at a specified position and measure the axial force borne by the strain screw; the outside of the strain screw is provided with a thread, and the inside of the strain screw is provided with a first groove, a second groove, a third groove and a fourth groove which are concentric and cylindrical from bottom to top; the diameter of the first groove is smaller than the diameter of the second groove, the diameter of the second groove is smaller than the diameter of the third groove, and the diameter of the third groove is smaller than the diameter of the fourth groove; a force rod is provided inside the first groove, a force detection part is provided inside the second groove, the force detection part is connected to a reinforcing fixing part, and a sealing sheet is provided inside the fourth groove; the force rod is used to apply a downward pulling force to the force detection part, and a strain gauge for detecting deformation is provided on the force detection part;

[0005] The pressure monitoring module is used to collect and analyze the data of the strain gauge and display the axial force borne by the strain screw.

[0006] Optionally, the force-bearing pull rod is provided with a hemispherical ball head, a connecting column, and a circular base in sequence from top to bottom; the diameter of the circular base is the same as the diameter of the first groove; the diameter of the connecting column is smaller than the diameter of the circular base; the diameter of the hemispherical ball head is larger than the diameter of the connecting column; one side of the hemispherical ball head plane faces upward, and one side of the curved surface is connected to the connecting column.

[0007] Optionally, the force detection part is provided with a fixing ring, a hollow column, and a stress detection circular plate in sequence from top to bottom; the outer ring diameter of the fixing ring is the same as the diameter of the third groove; the outer ring diameter of the hollow column is the same as the diameter of the second groove; the inner ring diameter of the fixing ring is the same as the inner ring diameter of the hollow column; the fixing ring is arranged on the upper surface of the second groove; a reducing hole is provided at the center of the stress detection circular plate, the upper radius of the reducing hole is greater than the lower radius, the cross-section of the reducing hole is an arc-shaped surface, and the curvature of the arc-shaped surface matches the curved surface of the hemispherical ball head; rectangular through grooves are provided around the reducing hole; a strain gauge is provided on the upper surface of the stress detection circular plate; one side of the plane of the hemispherical ball head is flush with the upper surface of the reducing hole, the connecting column passes through the lower surface of the reducing hole and does not contact the reducing hole; the curved surface of the hemispherical ball head and the arc-shaped surface of the reducing hole are smooth surfaces.

[0008] Optionally, the hemispherical ball head and the connecting column are integrally formed; and a connecting hole for connecting the connecting column is provided on the circular base.

[0009] Optionally, the number of the strain gauges is 4, and they are arranged between every two rectangular through slots along the radial direction of the stress detection circular plate; the 4 strain gauges form a Wheatstone bridge for stress detection.

[0010] Optionally, the reinforced fixing part is provided with a fixed circular plate and a fixed column in sequence from top to bottom; the fixed circular plate and the fixed column are integrally formed; a mounting through hole is provided between the fixed circular plate and the fixed column; a plurality of wire grooves are provided around the mounting through hole; the outer ring diameter of the fixed circular plate is the same as the diameter of the third groove; the outer ring diameter of the fixed column is the same as the inner ring diameter of the hollow column; the fixed circular plate is provided inside the third groove and abuts against the upper surface of the fixing ring; the fixed column is inserted into the interior of the hollow column and is spaced apart from the upper surface of the stress detection circular plate.

[0011] Optionally, four stress-bearing holes are provided on the top of the strain screw, and the stress-bearing holes are used for external components to rotate the strain screw; the stress-bearing holes are equidistantly distributed on the outside of the fourth groove; four lead holes are provided along the radial direction of the third groove; the four lead holes are respectively connected to the four stress-bearing holes; a conductive terminal is provided at the junction of the lead hole and the stress hole; the conductive terminal is used to seal the lead hole and is electrically connected to the strain gauge through a wire.

[0012] Optionally, a wireless transmission module is provided on the top of the strain screw, and the wireless transmission module includes an upper cover, a hollow body, a force-applying terminal, and a connecting groove; the upper cover is connected to the hollow body, and a force-applying terminal is provided at the lower part of the hollow body, and a connecting groove is provided on the force-applying terminal; force-applying holes are provided on the upper cover and the hollow body; the force-applying terminal corresponds to the position of the force-bearing hole and matches the size; a wire is provided on the connecting groove, and an electrical connection is formed when the connecting groove contacts the conductive terminal; a microprocessor, a wireless transmission module and a battery are provided inside the hollow body; the wireless transmission module is communicatively connected to the pressure monitoring module.

[0013] Compared with the prior art, the present invention has achieved the following technical effects:

[0014] 1. Since the strain screw has the function of axial force detection, the doctor can monitor the axial force of the screw in real time during the operation, so as to ensure that the fixing position and strength of the screw in the jawbone are in the best state. After all the screws are installed, the deformation of the mounting plate will cause the axial force of some screws to change. The doctor can more quickly find the position of the screw that exceeds the threshold or is under-stressed and adjust it, thereby improving the efficiency of the operation.

[0015] 2. The special structure of the internal force rod and force detection part of the strain screw can realize the accurate measurement of the axial force of the screw and reduce the influence of torque on the measurement result; the strain screw and the wireless transmission module used for force application are separately arranged, and the wireless transmission module used for force application can be removed after the work is completed, which reduces the volume of the strain screw, reduces the manufacturing cost and improves the utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of an intelligent force monitoring system for oral orthognathic surgery provided by an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of the structure of a strain screw in an intelligent force monitoring system for oral orthognathic surgery provided by an embodiment of the present invention;

[0018] Figure 3A schematic diagram of the internal structure of a strain screw in an intelligent force monitoring system for orthognathic surgery provided by an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of an explosion of the internal structure of a strain screw in an intelligent force monitoring system for orthognathic surgery provided by an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of the structure of a stress-bearing pull rod inside a strain screw in an intelligent stress-bearing monitoring system for oral orthognathic surgery provided by an embodiment of the present invention;

[0021] Figure 6 A schematic structural diagram of a strain screw internal force detection unit in an intelligent force monitoring system for oral orthognathic surgery provided by an embodiment of the present invention;

[0022] Figure 7 A schematic diagram of the structure of a reinforced fixing part in an intelligent force monitoring system for oral orthognathic surgery provided by an embodiment of the present invention;

[0023] Figure 8 A schematic diagram of the structure of a wireless transmission module in an intelligent force monitoring system for oral orthognathic surgery provided by an embodiment of the present invention;

[0024] Fig. 9 A schematic diagram of the connection between a wireless transmission module and a strain screw in an intelligent force monitoring system for oral orthognathic surgery provided by an embodiment of the present invention;

[0025] Fig.10 The present invention is a schematic diagram of the installation of screws and mounting frames in oral orthognathic surgery in the prior art.

[0026] 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.

[0027] DETAILED DESCRIPTION OF THE PRESSURE

[0028] 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.

[0029] like Figure 1-9 As shown, an embodiment of the present invention provides an intelligent force monitoring system for oral orthognathic surgery, including a strain screw 1, a mounting frame 2, and a pressure monitoring module (not shown);

[0030] The strain screw 1 is used to fix the mounting frame 2 at a specified position and measure the axial force borne by the strain screw 1; the outer surface of the strain screw 1 is provided with a thread, and the inner surface of the strain screw 1 is provided with a concentric and cylindrical first groove 15, a second groove 16, a third groove 17 and a fourth groove 18 from bottom to top; the diameter of the first groove 15 is smaller than the diameter of the second groove 16, the diameter of the second groove 16 is smaller than the diameter of the third groove 17, and the diameter of the third groove 17 is smaller than the diameter of the fourth groove 18; a force rod 11 is provided inside the first groove 15, a force detection part 12 is provided inside the second groove 16, the force detection part 12 is connected to the reinforcing fixing part 13, and a sealing sheet 14 is provided inside the fourth groove 18; the force rod 11 is used to apply a downward pulling force to the force detection part 12, and a strain gauge 124 for detecting deformation is provided on the force detection part 12; the pressure monitoring module is used to collect and analyze the data of the strain gauge 124, and display the axial force borne by the strain screw 1.

[0031] Optionally, the force-bearing pull rod 11 is provided with a hemispherical ball head 111, a connecting column 112, and a circular base 113 in sequence from top to bottom; the diameter of the circular base 113 is the same as the diameter of the first groove 15; the diameter of the connecting column 112 is smaller than the diameter of the circular base 113; the diameter of the hemispherical ball head 111 is larger than the diameter of the connecting column 112; the flat side of the hemispherical ball head 111 faces upward, and the curved side is connected to the connecting column 112;

[0032] The force detection part 12 is provided with a fixing ring 121, a hollow column 122, and a stress detection circular plate 123 in sequence from top to bottom; the outer ring diameter of the fixing ring 121 is the same as the diameter of the third groove 17; the outer ring diameter of the hollow column 122 is the same as the diameter of the second groove 16; the inner ring diameter of the fixing ring 121 is the same as the inner ring diameter of the hollow column 122; the fixing ring 121 is arranged on the upper surface of the second groove 16; a reducing through hole is provided at the center of the stress detection circular plate 123, the upper radius of the reducing through hole is greater than the lower radius, the cross-section of the reducing through hole is an arcuate curved surface 1231, and the curvature of the arcuate curved surface 1231 matches the curved surface of the hemispherical ball head 111; rectangular through grooves 1232 are provided around the reducing through hole; a strain gauge 124 is provided on the upper surface of the stress detection circular plate 123;

[0033] One side of the plane of the hemispherical ball head 111 is flush with the upper surface of the diameter-changing through hole, and the connecting column 112 passes through the lower surface of the diameter-changing through hole without contacting the diameter-changing through hole.

[0034] Furthermore, the curved surface of the hemispherical ball head 111 and the arc-shaped curved surface 1231 of the variable-diameter through hole are smooth curved surfaces.

[0035] Furthermore, the hemispherical ball head 111 and the connecting column 112 are integrally formed; and a connecting hole for connecting the connecting column 112 is provided on the circular base 113 .

[0036] Furthermore, the circular base 113 is provided with a plurality of glue injection holes and glue injection grooves.

[0037] Furthermore, the number of the strain gauges 124 is four, and they are arranged between every two rectangular through slots 1232 along the radial direction of the stress detection circular plate 123 at intervals; the four strain gauges 124 form a Wheatstone bridge for stress detection.

[0038] Optionally, the reinforced fixing part 13 is provided with a fixed circular plate 131 and a fixed column 132 in sequence from top to bottom; the fixed circular plate 131 and the fixed column 132 are integrally formed; a mounting through hole 133 is provided between the fixed circular plate 131 and the fixed column 132; a plurality of wire grooves 134 are provided around the mounting through hole 133; the outer ring diameter of the fixed circular plate 131 is the same as the diameter of the third groove 17; the outer ring diameter of the fixed column 132 is the same as the inner ring diameter of the hollow column 122; the fixed circular plate 131 is provided inside the third groove 17 and abuts against the upper surface of the fixing ring 121; the fixed column 132 is inserted into the interior of the hollow column 122 and is spaced apart from the upper surface of the stress detection circular plate 123.

[0039] Optionally, four force-bearing holes 20 are provided on the top of the strain screw 1, and the force-bearing holes 20 are used for external components to rotate the strain screw 1; the force-bearing holes 20 are equidistantly distributed on the outside of the fourth groove 18; four lead holes 19 are provided along the radial direction of the third groove 17; the four lead holes 19 are respectively connected to the four force-bearing holes 20; a conductive terminal 21 is provided at the intersection of the lead hole 19 and the force hole 20; the conductive terminal 21 is used to seal the lead hole 19, and is electrically connected to the strain gauge 124 through a wire.

[0040] Optionally, a wireless transmission module 3 is provided on the top of the strain screw 1, and the wireless transmission module 3 includes an upper cover 31, a hollow body 32, a force-applying terminal 33, and a connecting groove 34; the upper cover 31 is connected to the hollow body 32, and a force-applying terminal 33 is provided at the lower part of the hollow body 32, and a connecting groove 34 is provided on the force-applying terminal 33; force-applying holes are provided on the upper cover 31 and the hollow body 32; the force-applying terminal 33 corresponds to the position of the force-bearing hole 20 and matches the size; a wire is provided on the connecting groove 34, and an electrical connection is formed when the connecting groove 34 contacts the conductive terminal 21; a microprocessor, a wireless transmission module and a battery are provided inside the hollow body 32; the wireless transmission module 3 is communicatively connected with the pressure monitoring module.

[0041] Optionally, the installation process of the strain screw 1 is:

[0042] Step 1, pass the connecting column 112 with the hemispherical ball head 111 through the reducing through hole, and fix the connecting column 112 and the circular base 113;

[0043] Step 2, installing the reinforcing fixing portion 13 to the force detection portion 12, and leading the wire of the strain gauge 124 to the outside of the reinforcing fixing portion 13 through the wire groove 134;

[0044] Step 3, inject a small amount of fixing colloid into the bottom of the first groove 15 of the strain screw 1; fix the force rod 11, the force detection part 12, and the reinforcing fixing part 13 to the corresponding groove of the strain screw 1; apply pressure to the upper surface of the hemispherical ball head 111 through the force rod passing through the mounting through hole 133, so that the circular base 113 is tightly connected to the bottom of the first groove 15, and ensure that one side of the plane of the hemispherical ball head 111 is flush with the upper surface of the variable diameter through hole;

[0045] Step 4, connecting the wire and the conductive terminal 21, and fixing the conductive terminal 21 to a designated position of the lead hole 19;

[0046] Step 5: Install the sealing sheet 14 into the fourth groove 18 .

[0047] Working principle of the strain screw: When the strain screw is working, it will be subjected to torsion and downward pulling force, which will drive the force-bearing pull rod 11 to rotate and move downward. Since the hemispherical ball head 111 and the stress detection circular plate 123 are separately arranged, when the hemispherical ball head 111 rotates, no torsion is applied to the stress detection circular plate 123. When the hemispherical ball head 111 moves downward, the stress detection circular plate 123 is deformed through the arc surface 1231, and the axial force is measured by the strain gauge 124.

[0048] The working principle of the intelligent force monitoring system for oral orthognathic surgery is: install the wireless transmission module 3 to the strain screw 1, connect the wireless transmission module 3 and the pressure monitoring module, apply force to the strain screw 1 through the force hole of the wireless transmission module 3, and fix the mounting frame 2 to the designated position in the oral cavity through the strain screw 1; the pressure monitoring module displays the axial force of each strain screw 1, and the staff adjusts the strain screw 1 at the designated position according to the indicated value.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. Intelligent force monitoring system for oral orthognathic surgery, including: Strain screws, mounting brackets, pressure monitoring modules; The strain screw is used to fix the mounting frame at a specified position and measure the axial force borne by the strain screw; the outside of the strain screw is provided with a thread, and the inside of the strain screw is provided with a first groove, a second groove, a third groove and a fourth groove which are concentric and cylindrical from bottom to top; the diameter of the first groove is smaller than the diameter of the second groove, the diameter of the second groove is smaller than the diameter of the third groove, and the diameter of the third groove is smaller than the diameter of the fourth groove; a force rod is provided inside the first groove, a force detection part is provided inside the second groove, the force detection part is connected to a reinforcing fixing part, and a sealing sheet is provided inside the fourth groove; the force rod is used to apply a downward pulling force to the force detection part, and a strain gauge for detecting deformation is provided on the force detection part; The pressure monitoring module is used to collect and analyze the data of the strain gauge and display the axial force borne by the strain screw.

2. The intelligent force monitoring system according to claim 1, characterized in that: The force-bearing pull rod is provided with a hemispherical ball head, a connecting column, and a circular base in sequence from top to bottom; the diameter of the circular base is the same as the diameter of the first groove; the diameter of the connecting column is smaller than the diameter of the circular base; the diameter of the hemispherical ball head is larger than the diameter of the connecting column; one side of the hemispherical ball head with a flat surface faces upward, and one side of the curved surface is connected to the connecting column.

3. The intelligent force monitoring system according to claim 2, characterized in that: The force detection part is provided with a fixing ring, a hollow column, and a stress detection circular plate in order from top to bottom; the outer ring diameter of the fixing ring is the same as the diameter of the third groove; the outer ring diameter of the hollow column is the same as the diameter of the second groove; the inner ring diameter of the fixing ring is the same as the inner ring diameter of the hollow column; the fixing ring is arranged on the upper surface of the second groove; a reducing through hole is provided at the center of the stress detection circular plate, the upper radius of the reducing through hole is greater than the lower radius, the cross section of the reducing through hole is an arc-shaped surface, and the curvature of the arc-shaped surface matches the curved surface of the hemispherical ball head; rectangular through grooves are provided around the reducing through hole; a strain gauge is provided on the upper surface of the stress detection circular plate; one side of the plane of the hemispherical ball head is flush with the upper surface of the reducing through hole, the connecting column passes through the lower surface of the reducing through hole and does not contact the reducing through hole; the curved surface of the hemispherical ball head and the arc-shaped curved surface of the reducing through hole are smooth curved surfaces.

4. The intelligent force monitoring system according to claim 3, characterized in that: The hemispherical ball head and the connecting column are integrally formed; and a connecting hole for connecting the connecting column is provided on the circular base.

5. The intelligent force monitoring system according to claim 3, characterized in that: The number of the strain gauges is 4, and they are arranged between every two rectangular through slots along the radial direction of the stress detection circular plate; the 4 strain gauges form a Wheatstone bridge for stress detection.

6. The intelligent force monitoring system according to claim 3, characterized in that: The reinforced fixing part is provided with a fixed circular plate and a fixed column in sequence from top to bottom; the fixed circular plate and the fixed column are integrally formed; a mounting through hole is provided between the fixed circular plate and the fixed column; a plurality of wire grooves are provided around the mounting through hole; the outer ring diameter of the fixed circular plate is the same as the diameter of the third groove; the outer ring diameter of the fixed column is the same as the inner ring diameter of the hollow column; the fixed circular plate is provided inside the third groove and abuts against the upper surface of the fixing ring; the fixed column is inserted into the interior of the hollow column and is spaced apart from the upper surface of the stress detection circular plate.

7. The intelligent force monitoring system according to claim 3, characterized in that: Four stress-bearing holes are arranged on the top of the strain screw, and the stress-bearing holes are used for external components to rotate the strain screw; the stress-bearing holes are equidistantly distributed on the outside of the fourth groove; four lead holes are arranged along the radial direction of the third groove; the four lead holes are respectively connected with the four stress-bearing holes; a conductive terminal is arranged at the intersection of the lead hole and the stress-bearing hole; the conductive terminal is used to seal the lead hole, and is electrically connected to the strain gauge through a wire.

8. The intelligent force monitoring system according to claim 7, characterized in that: A wireless transmission module is arranged on the top of the strain screw, and the wireless transmission module includes an upper cover, a hollow body, a force-applying terminal, and a connecting groove; the upper cover is connected to the hollow body, and a force-applying terminal is arranged at the lower part of the hollow body, and a connecting groove is arranged on the force-applying terminal; force-applying holes are arranged on the upper cover and the hollow body; the position of the force-applying terminal corresponds to that of the force-bearing hole and the size matches that of the force-bearing hole; a wire is arranged on the connecting groove, and an electrical connection is formed when the connecting groove contacts the conductive terminal; a microprocessor, a wireless transmission module and a battery are arranged inside the hollow body; the wireless transmission module is communicatively connected with the pressure monitoring module.

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