TWI246909B - Automatic distractor system - Google Patents

Abstract

An automatic distractor system comprising a micro-controller unit, a driving unit, a transmission unit, a distractor unit, and a sensor unit. Herein the micro-controller unit is used to transfer data to an outer computer, in charge of outputting a driving signal to the driving unit. The driving unit is used to receive the driving signal and transform it into a torque and output the torque. The output torque is enlarged by the transmission unit and delivered to the distractor. The distractor is used to transform the enlarged output torque to the force for extending or retracting the portion of the osteotomy fixed by the distractor. The sensor unit is used to measure the related signals of the distractor.

Description

1246909 V. INSTRUCTION DESCRIPTION α) 1. TECHNICAL FIELD OF THE INVENTION The present invention is a medical bone expander system, and more particularly, an automated bone-building system capable of automatically adjusting the unit length of the bone expander contraction or extension. Second, [previous technology] When the patient's bones have appearance or functional problems, such as long chin, long and short feet, or fractures caused by car accidents, etc., usually go to the doctor to find a surgeon to help correct, the surgeon used as a A skeletal correction device, commonly referred to as a bone expander, a bone expander typically includes a fixed bone fixation and a sliding bone fixation seat, a fixed bone fixation seat and a sliding bone fixation seat respectively Fixed on the bones on both sides of the affected part after the bone resection operation. After the fixation is completed, the distance between the fixed bone fixation seat and the sliding bone fixation seat of the bone device is adjusted by a driving component (such as a screw). The bones of the affected part are grown to a predetermined length to restore the appearance and function of the affected part. An orthodontic bone expander 10, as shown in the first figure, comprises a support 12, a fixed bone locking seat 14, a sliding bone locking seat 16, a sliding rod 18, a driving screw 20 and a universal joint 2 4, wherein the sliding steric locking seat 16 is connected with a driving screw 20 by a threaded hole 2 1 , respectively, and the fixed skeletal locking seat 1 4 and the sliding skeletal locking seat 16 are respectively The entire bone of the affected bone through the energy device

1246909 V. INSTRUCTIONS (2) After the skeletal locking hole 2 2 is fixed to the bones on both sides of the affected part of the patient, a torque is transmitted through the universal joint 24 to the driving screw 20 to lock the movable sliding bone. Seat 16 is adjusted to adjust its distance relative to the fixed skeletal lock block 14. At present, the adjustment method of the general bone-bone device is mainly based on manual manual adjustment, and the distance is adjusted by about one mm per day. In terms of such design, patients who need to perform bone correction must be returned every day and surgically Manually, the doctor can open or lock the bone expander, which is quite inconvenient, and the adjustment is not precise enough, which often causes the patient's discomfort. In addition, the frequent number of visits not only causes the surgeon to be bothered, but also Medical resources are also a waste, so there is a need to automatically adjust the bone expander automatically. III. [Summary of the Invention] One of the main purposes of the present invention is to combine an automatic drive system with a variety of bone-expanding devices for surgery, and then fix the automated bone-bone system to the bone resection site of the patient, and control it by computer. The method achieves the functions of precise control and small adjustment, and precisely controls the progress of the surgical treatment. Another object of the present invention is to use a reduction gear set to amplify the torque of the drive motor and to reduce the overall system volume by means of a high reduction ratio transmission (such as a worm and a worm gear), so that the overall automated bone expander system can be installed on The bone surgery site of the patient.

1246909 V. INSTRUCTION DESCRIPTION (3) Another object of the present invention is to combine a torque sensor on a bone bender of an automated bone expander system to determine whether to activate the drive motor to move the bone through the feedback of the torque value. The sliding bone lock in the device. Another object of the present invention is to incorporate a biosensor in an automated bone expander system to detect bleeding or inflammation in the affected area to help the patient or surgeon better grasp the course of treatment. The invention first provides an automatic bone-bone system, which comprises a micro-control unit, which is connected to an external computer for data transmission and receives a plurality of sensing signals for outputting a driving signal. A drive unit is coupled to the micro control unit and receives the drive signal and converts the drive signal to a torque output. A bone expander unit is coupled to the drive unit for receiving a torque output and converting the torque output into a moving force that extends or contracts. And a sensor unit unit is connected to the bone expander via a driving screw, and outputs a plurality of sensing signals of the sensor group unit to the micro control unit. In addition, the present invention also provides a method of automatically adjusting a bone expander, comprising providing an automated bone expander system and then securing the automated bone expander system to a bone resection site of a patient. Next, a drive signal is input to the automated bone expander system and a torque value is recorded for one of the bone expander units of the automated bone expander system, wherein when the bone expander unit begins to move,

1246909 V. INSTRUCTIONS (4) Record the lower limit of the torque of the automated bone expander system at this time; when the bone expander unit moves to the patient feeling uncomfortable, the record is applied to the bone cut site at this time The upper limit of the torque of the automated bone expander system. Then, the lower limit of the torque, the upper limit of the torque, the total feed value of the treatment and the minimum unit value of the feed are sent to the external computer, and the automatic chemotherapy course of the patient is obtained, and the external computer will be automated. The treatment bone graft feeding program is input to the automated bone expander system. Finally, inform the patient about the scheduled next treatment time. 4. Embodiments Some embodiments of the present invention will be described in detail below. However, the present invention may be widely practiced in other embodiments in addition to the detailed description. That is, the scope of the present invention is not limited by the embodiments of the present invention, but should be based on the scope of the patent application. First, please refer to the second figure, which is a block diagram of the automated bone expander system of the present invention. As shown in the figure, the automated bone expander system automatic bone expander system of the present invention is composed of a control unit 52, a drive circuit unit 56, a drive unit unit 58, and a transmission unit 60. The bone moving unit 6 8 and the sensor group unit 61 are configured to perform a data communication operation with the external computer 54 through the control unit 52. Further, the sensor unit unit 6 13⁄4 includes a torsion sensing unit 6.2, a position sensing unit 64 and a biosensing unit 66. The torque sensing unit 6 2 includes a twist

1246909 V. INSTRUCTION DESCRIPTION (5) The force meter and the torque sensing circuit convert the measured mechanical torque value into a voltage signal transmission control unit 52. The position sensing unit 64 includes an encoder and a counter for recording the position of the motor shaft and transmitting the motor position back to the micro control unit 52. The biosensing unit 66 includes an infrared detector to sense whether the affected part is inflamed or bleeding. After the control unit 52 (for example, a microcontroller) receives the signals from the external computer 5 4 and the respective sensing signals from the sensor group unit 61, a driving signal is generated and input to the driving circuit unit 5. 6. The drive signal is amplified by the drive circuit unit 56 and then input to the drive unit 58 (for example, a stepping motor) to cause the drive motor to generate a drive torque. Then, the driving torque is further decelerated and amplified by the transmission unit 60 (for example, a reduction gear set), and then the amplified torque is input into the bone expander unit 68 to extend the bone expander unit 68 or Shrinking action. After the sensing signal of the torque sensor 62 and the position sensor 64 in the sensor group unit 6 1 is fed back to the microcontroller of the micro control unit 52, the microcontroller will determine the bone expander unit. Whether the extension or contraction length has reached a predetermined value determines the output value of the next drive signal. The automated bone expander system 50 of the present invention can perform an automated chemotherapy procedure using a number of predetermined parameters to reduce the number of outpatient visits to the patient. In the present invention, some preset parameters are related to the interaction force between the bone expander and the bone, for example, based on the tension and thrust between the bone expander and the bone, and can be detected and measurable when applied to the bone expander. Physical quantity, such as a bone expander unit

1246909 V. Inventive Note (6) Torque value of 6 8 . Furthermore, other preset parameters are associated with the bone expander itself, such as the total amount of movement of the bone expander unit 68 and the amount of unit movement. In the actual application, the automatic bone-expanding system 50 of the present invention can input a plurality of preset parameters required by the external computer 54 into a storage unit of the automated bone-expanding system 50 of the present invention (not shown) For example, in a memory, in an embodiment, the preset parameter includes a torque upper limit value, a torque lower limit value, a course total feed value, and a feed minimum unit value. When the above-mentioned real bone system 50 is fixed to the external electric power and the driving motion is recorded during the movement, the tactile bone system 50 of the restraint system 50 of the tissue is uncomfortable and dynamic. Lower limit value and torque part computer 5 4. The input to the minimum unit treatment bone graft feeding program is input into the example, and the patient's brain is set to input the auto-value and the bone-expanding force, so the value will be under the next torque, then remember The upper limit of the twisting of the system will be down, and the value will be input to the program. The automated exhibition surgeon will first reduce the bones of the affected part, such as the bones of the bones, to the bones. Record this force through the external and external force signal system. 68 has been cut off the lowest value. This limit is used when the exhibition is extended. From the automated surgeon to the exhibition in the automation 50, the bone-expanding device overcomes the application of the diseased position, and then records the bone unit of the bone unit. Then, the bone-expanding device is automatically removed, and the bone device system is connected to the bone device. 8 shift unit 68 begins to move the bone resection part of the automatic bone expander at this time, the automatic exhibition 6 8 moves to the diseased part applied to the recorded torque system 50 output to the outside will be a course of total feed value with a computer 5 4 To get an external computer 54 will be from the system 5 0. At this point, the patient's automated chemotherapy and chemotherapy progress to the surgeon

Page 10 1246909 V. Description of the invention (7) Knowing the patient's scheduled next treatment time, the automated bone-bone system 50 can automatically perform treatment on the patient, where the bone removal site is applied to the automated bone When the torque on the system 50 is less than the lower limit of the torque, the automated bone expander system 50 will start to operate. When the torsion force applied to the automated bone expander system 50 reaches the upper limit of the torque, the automation exhibition The bone system 50 stops operating. When the automated bone expander system 50 has reached the total feed value of the treatment, the automated bone expander system 50 can issue an alarm based on the result by any suitable method and device. Inform the patient to return to the hospital for a follow-up visit. In the present invention, the control unit 52 in the automated bone expander system 50 is mainly composed of a microcontroller, and its main functions include the data transmission function of the microcontroller, the driving signal output function and the sensing signal receiving function. These functions are respectively implemented by a data transmission terminal, a driving signal output terminal and a plurality of sensing signal receiving terminals of the microcontroller, wherein the data transmission terminal is used for data transmission operation with an external computer of the data transmission unit 54, the external computer 5 4 After the torque upper limit value, the torque lower limit value, the motor position count value input by the microcontroller, and the total feed value and the minimum feed unit value input by the surgeon, an automatic chemotherapy procedure can be generated. Give the program. At this time, the automatic chemotherapy program is used to input the auto-chemotherapy feeding program into the microcontroller to automate the automatic bone-extending system 50 for the patient. After receiving the auto-chemotherapy procedure, the micro-controller cooperates with the plurality of sensing signals received from the plurality of sensing signal receiving terminals, and outputs a driving signal to the driving circuit unit 5 through a driving signal output terminal. 6.

1246909 V. INSTRUCTION DESCRIPTION (8) The driving circuit unit 56 of the present invention is mainly composed of a motor driving circuit which is connected to a driving signal output terminal of the microcontroller for amplifying the driving signal. After the drive signal is amplified by the motor drive circuit, one of the output terminals of the motor drive circuit is output to the drive unit 58. The driving device unit 58 of the present invention is mainly a stepping motor. The stepping motor receives a driving signal amplified by the motor driving circuit, and generates a torque which can be outputted by the rotating shaft of the stepping motor. In the present invention, the transmission unit 60 is mainly composed of a reduction gear set, and its structure is as shown in the third figure. The output torque value of the driving device unit of the present invention is about 5 gram-cm, and after the torque is amplified by the reduction gear set, a torque output of 1 kg-cm can be obtained on the bone-expanding unit 66, that is, through the reduction gear set. A torque amplification of about 200 times is obtained. The reduction gear set is coupled to the rotating shaft 26 of the drive motor through a first worm 28, and is coupled to a first worm 30 to perform a 12-fold deceleration of the first stage. After decelerating and amplifying the torque of 12 times and then transmitting through the first spur gear 3 2 connected to the first worm wheel 30 on the same shaft and the second spur gear 3 4 connected to the first spur gear 3 2, about 1. 3 times the torque value. After the steering, the second worm 36 and the second worm gear 38 are coupled to perform the second stage 12 times deceleration. The torque is then amplified by a third spur gear 40 that is coupled to the second spur gear and the fourth spur gear 4 that is coupled to the third spur gear. After the steering, the amplified torque is output through the coaxial shaft connector 44 connected to the fourth spur gear 42. Due to the radius of the shaft connector 44

Page 12 1246909 V. Inventive Note (9) Small, it will be able to get about 2 times the torque amplification. Finally, the shaft connector 44 is reconnected to the universal joint 24 to transfer the amplified torque to the bone expander unit 68 of the bone expander. Overall, the torque is amplified by the two-stage 12-fold worm-gear wheel and the torque of the two-segment spur gear is enlarged. After the torque is finally reduced by the radius, the reduction gear set is about twice. The torque value of the output of the drive motor can be put about 50,000 times, but considering the transmission efficiency of the machine, the final torque is about 200 times, which meets the requirements of the present invention. The bone expander unit 6.8 of the present invention includes a drive screw (not shown) in which the drive screw is coupled to the shaft connector (not shown) of the reduction gear set through the universal joint 24. The bone expander inputs the amplified torque to the bone expander unit 6.8 to cause the bone expander to extend or contract to cause the moving force of the bone resection portion to be fixed by the bone expander. In the present invention, the minimum unit value of the bone expander feed is between about 0. 0 2 5 mm (mm) and 0 · 0.050 mm. Further, in the sensor group unit 61 of the present invention, the torque sensor 62 and the position sensor 64 are connected to the end of a drive screw (not shown) of the bone expander unit 68, The position of the bone expander unit 6.8 and the received torque value are measured, and the measured signal values are fed back to the microcontroller to form a feedback control system. The biosensor 6 6 can be an infrared detector, which can be used to detect whether there is bleeding or inflammation in the bone resection site, when the infrared detector detects bleeding or inflammation in the bone resection site. The automated bone expander system 50 will issue an alarm to notify the patient installing the automated bone expander system.

Page 13 1246909 V. DESCRIPTION OF THE INVENTION The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of the invention. Modifications may be made without departing from the spirit and scope of the invention, and such variations are still within the scope of the invention. Accordingly, the scope of the invention is defined by the scope of the following claims.

Page 14 1246909 Brief Description of the Drawings V. [Simple Description of the Illustration] The first figure is a schematic diagram of a bone-expanding device for oral correction in the prior art; the second picture is a schematic diagram of a system unit of an automated bone-bone system; and a third The picture shows a schematic diagram of a reduction gear set. Symbol Description: ίο Bone sculpt for oral correction 12 support

14 fixed bone lock seat 1 6 sliding bone lock seat 1 8 slide rod 2 0 drive screw 2 1 threaded hole 2 2 bone lock hole 24 million joint 2 6 drive motor shaft 2 8 first worm 3 0 First worm gear

3 2 first spur gear 3 4 second spur gear 3 6 second worm 3 8 second worm gear 40 third spur gear

Page 15 1246909 Schematic description 42 fourth spur gear 4 4 axis connector 5 0 automated bone expander system 5 2 control unit 5 4 data transfer unit 5 6 drive circuit unit 5 8 drive motor unit 60 drive unit 61 sense Detector unit 6 2 torque sensing unit 6 4 position sensing unit 6 6 biological sensing unit 68 bone splicing unit

Page 16

Claims (1)

1246909 VI. Patent Application Scope of Application: 1. An automated bone-bone system comprising: a micro-control unit that communicates with an external computer for data transmission and receives a plurality of sensing signals for outputting a driving signal a driving device unit is connected to the micro control unit, and receives the driving signal and converts the driving signal into a torque output; a bone expander unit is connected to the driving device unit for receiving the Torque output, and converting the torque output into a moving force of extension or contraction; and a sensor group unit connected to the bone expander unit via a driving screw, and the plural of the sensor group unit The sensing signals are output to the micro control unit. 2. The automated bone expander system of claim 1, wherein the micro control unit is a microprocessor. 3. The automated bone-splitting device system of claim 1, wherein the driving device unit further comprises: a driving circuit unit, one end of which is connected to the micro-control unit for amplifying the driving signal, and Outputted from the other end to the drive unit; and a transmission unit having one end coupled to the drive unit for amplifying the torque and the other end coupled to a torque output member. Page 17 1246909 VI. Scope of Application Patent 4. The automated bone-bone system of claim 1, wherein the drive unit is a stepper motor. 5. The automated bone expander system of claim 3, wherein the torque output member is a universal joint. 6. The automated bone expander system of claim 3, wherein the transmission unit is a reduction gear set. 7. The automated bone expander system of claim 3, wherein the drive unit is coupled to a shaft of the drive unit by a worm. 8. The automatic bone-bone system of claim 3, wherein the above-mentioned transmission unit has a magnification of 200-500 times. 9. The automatic bone-expanding device system of claim 1, wherein the bone-expanding device comprises a bone-expanding device for craniofacial correction, a bone-expanding device for orthodontics, a bone-expanding device for spinal correction, and a leg bone correction device. Bone sculpt. 10. The automated bone expander system of claim 1, wherein the sensor group unit further comprises: a torsion sensor; a position sensor; Page 18 1246909 VI. Patent Application Scope A biosensor. 11. The automated bone expander system of claim 10, wherein the torsion sensor is a torque meter coupled to the drive screw of the bone expander unit for measuring The bone expander unit is subjected to a torque value. 1 2 . The automatic bone-bone system of claim 1 of the patent application, when the torque value is a lower torque limit, the automated bone-bone system begins to operate. 1 3. The automatic bone expander system of claim 11 of the patent application, when the torque value is an upper limit of the torque, the automated bone expander system is stopped. 1 4 . The automated bone-bone system of claim 10, wherein the position sensor is a position encoder, and the position encoder is coupled to the drive screw of the bone expander unit. The amount of movement of one of the bone expander units is measured. 1 5. The automated bone expander system of claim 10, wherein the biosensor is an infrared detector. 1 6. The automated bone-bone system of claim 1, wherein the above Page 19 1246909 6. The data content of the data transmission operation performed by the microcontroller and the external computer of the patent application scope includes the torque upper limit value, the torque lower limit value, a motor position count value, and a course total feed. The value is fed with a minimum unit value and an automatic chemotherapy course is generated accordingly. 1 7 . The automated bone-bone system of claim 16 wherein the minimum feed unit value is between 0.025 mm and 0.50 mm. 1 8. The automated bone expander system of claim 1, wherein the automated bone expander system further comprises an alarm. 1 9 . An automated bone-expanding system comprising: a micro-control unit interconnecting data transmission with an external computer and receiving a plurality of sensing signals for outputting a driving signal; a driving circuit unit The micro control unit is connected to amplify the driving signal; a driving device unit receives the amplified driving signal and generates a torque, and the torque is output through a rotating shaft of the driving device unit; Connected to the rotating shaft of the driving device unit to amplify the torque, and output the amplified torque through a torque output component; a bone expander unit, the bone expander unit includes a driving screw, and The drive screw is coupled to the torque output member of the transmission unit for converting the amplified torque into a moving force that extends or contracts; 1246909 VI. Patent Application Range A sensor group unit is connected to the bone expander unit, and outputs the plurality of sensing signals of the sensor group unit to the micro control unit. 20. The automated bone expander system of claim 19, wherein the micro control unit is a microprocessor. 2 1. The automated bone expander system of claim 19, wherein the drive unit is a stepper motor. 2 2. The automated bone-bone system of claim 19, wherein the torque output element is a universal joint. 2 3. The automated bone expander system of claim 19, wherein the transmission unit is a reduction gear set. 2 4. The automated bone-bone system of claim 19, wherein the above-mentioned transmission unit has a magnification of 200-50 0 times. 2 5 . The automated bone-bone system of claim 19, wherein the bone-expanding unit comprises a bone-expanding bone-expanding device, an orthodontic bone-bone device, a spine-correcting bone-bone device, and a leg bone Correctly use the bone expander. 2 6. The automated bone-bone system of claim 19, wherein the sensor group unit further comprises: Page 21 1246909 VI. Scope of Application A torsion sensor; a position sensor; and a biosensor. 2 7 . The automatic bone trajectory system of claim 26, wherein the torsion sensor is a torque meter, and the torque meter is connected to the driving screw of the bone expander unit for measuring The bone bender unit is subjected to a torque value. 2 8. If the automatic bone-expanding system of claim 27 is applied, when the torque value is a lower torque limit, the automated bone-bone system begins to operate. 2 9. If the automatic bone-expanding system of claim 27 is applied, when the torque value is a torque upper limit, the automated bone-bone system is stopped. 30. The automatic bone-bone system of claim 26, wherein the position sensor is a position encoder, and the position encoder is connected to the drive screw of the bone expander unit. The amount of movement of one of the bone expander units is measured. 3 1. An automated bone-bone system as claimed in claim 26, wherein the biosensor is an infrared detector. 1246909 6. Patent application scope 3 2. The automatic bone-bone system of claim 19, wherein the data content of the data transmission operation performed by the above-mentioned microcontroller and the external computer includes the upper limit of the torque, The torque lower limit value, a motor position count value, a course total feed value and a feed minimum unit value, and accordingly generate an automatic chemotherapy course feed program. 3 3. The automatic bone-bone system of claim 3, wherein the minimum feed unit value is between 0.025 mm and 0.05 mm. 3 4. The automated bone expander system of claim 19, wherein the automated bone expander system further comprises an alarm. 3 5 - A method for automatically adjusting a bone expander, comprising: an automatic bone expander system; fixing the automated bone expander system to a patient's "f-section"; inputting a drive signal to the automation The bone expander system, _ and records one of the torque values of one of the bone expander units of the automated bone expander system; recording a lower torque limit, when the bone expander unit begins to move, record this time The lower limit of the torque of the automated bone expander system; recording an upper limit of the torque, when the bone expander unit moves to the patient feeling uncomfortable, the record is then applied to the automated exhibition by the bone removal site The upper limit of the torque of the bone system; Page 23 1246909 VI. Patent application range The torque lower limit value and the torque upper limit value are input from the automatic bone expander system to an external computer; then the total feed value of one course and the minimum feed unit value are added to The external computer obtains an automatic chemotherapy course of the patient, and the external chemotherapy computer inputs the automatic chemotherapy procedure to the automated bone expander system; and informs the patient to schedule the patient The next treatment time. 3 6. The method of automatically adjusting a bone expander according to claim 35, wherein the automatic bone expander is when the torque applied to the automated bone expander system is less than the lower limit of the torque The system will start to work. 3 7. The method of automatically adjusting a bone expander according to claim 35, wherein the automatic bone expander reaches when the torsion force applied to the automated bone expander system reaches the upper limit of the torque The system stops working. 3 8. A method for automatically adjusting a bone expander according to claim 35, wherein the automated bone expander system issues an alarm to notify the disease when the automated bone expander system has reached the total feed value of the treatment Suffering from a follow-up visit. Page 24