Electric intelligent orthopedic external fixing frame

Abstract

The invention relates to an electric intelligent orthopedic external fixing frame which comprises a telescopic mechanism, an upper ring, a lower ring, a driving mechanism and a control mechanism. The telescopic mechanism comprises a sleeve and a screw rod; one end of the sleeve is hinged to the upper ring, and the other end of the sleeve sleeves the screw; one end of the screw away from the sleeve is hinged to the lower ring; an adjusting nut gear is arranged on the screw rod; the driving mechanism comprises a motor, an output shaft and a circuit board; the motor drives the output shaft; a driving gear is arranged on the output shaft; the driving gear is meshed with the adjusting nut gear; the circuit board is connected with the motor; the control mechanism is arranged on the upper ring and is connected with the driving mechanism; wherein a subject matter is arranged on the screw rod; the driving mechanism comprises a sensor; the circuit board is connected with the sensor; the sensor detects a subject matter. According to the invention, the subject matter is arranged on the screw for detection by the sensor, so that the telescopic length can be directly obtained. And the sensor and the motor are directly controlled by the circuit board without connecting a control structure, so that the number of cables between the control mechanism and the driving mechanism is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical rehabilitation and correction, and in particular to an electric intelligent orthopedic external fixator. Background Art

[0002] The electric intelligent orthopedic external fixator can locate and fix the fracture outside the skin through bone pins or nails. With the continuous development of engineering machinery, the traditional manually adjusted external frame is gradually replaced by the electric external frame.

[0003] The electric intelligent orthopedic external fixator is more convenient and intelligent to adjust, but it adds various electronic control devices and cable connections between the devices, making the electric intelligent orthopedic external fixator structure system complicated. The complex structure will increase the difficulty of installation and later adjustment of the electric intelligent orthopedic external fixator. In addition, the electric intelligent orthopedic external fixator is set on the human body. The complexity of the system will increase the weight of the electric intelligent orthopedic external fixator. The connection of various cables will also interfere with the movement of the human body, thereby affecting the patient's treatment effect.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide an electric intelligent orthopedic external fixator to simplify system design.

[0006] The technical solution of the present invention is as follows:

[0007] An electric intelligent orthopedic external fixator, the electric intelligent orthopedic external fixator comprising a telescopic mechanism, an upper ring, a lower ring and a driving mechanism;

[0008] The telescopic mechanism comprises a sleeve and a screw; one end of the sleeve is hinged to the upper ring, and the other end of the sleeve is sleeved on the screw; one end of the screw away from the sleeve is hinged to the lower ring; an adjusting nut gear is arranged on the screw;

[0009] The driving mechanism comprises a motor and an output shaft; the motor drives the output shaft; a driving gear is arranged on the output shaft; the driving gear meshes with the adjusting nut gear;

[0010] Wherein, a target object is arranged on the screw rod; the driving mechanism comprises a sensor; and the sensor detects the target object.

[0011] A further technical solution is that the inner wall of the connecting hole of the driving gear is raised to form a triangular stop that is higher in the middle and lower on both sides; a first flat position is set on the output shaft; and the triangular stop is against the flat position.

[0012] A further technical solution is that two sensors are provided, and the two sensors are arranged at 90 degrees around the axis of the screw; and the target object is arranged on the adjusting nut gear.

[0013] A further technical solution is that the driving mechanism also includes a base; the motor is arranged on the base; at least two pins are extended from the base; a threaded connection hole is provided at the end of the pin to connect to the shell; the shell pin and the base hold the screw.

[0014] A further technical solution is that a limiting groove is provided at one end of the sleeve close to the screw rod; and the latch pin passes over the sleeve along the limiting groove.

[0015] A further technical solution is that the adjusting nut gear comprises a driven gear and a driven nut; the driven gear and the driven nut are coaxially connected; the driven gear is rotationally connected to the sleeve, and the driven nut is threadedly connected to the screw rod.

[0016] A further technical solution is that six telescopic mechanisms are provided, and there are acute angles between adjacent telescopic mechanisms.

[0017] A further technical solution is that a control mechanism is also provided on the upper ring; the driving mechanism includes a circuit board; the circuit board is connected to the motor and the sensor; and the control mechanism is connected to the circuit board.

[0018] A further technical solution is that a first bolt, a second bolt and a third bolt are arranged on the upper ring, the first bolt and the second bolt pass through the upper ring in the same direction; the third bolt connects the first bolt and the second bolt at the same time, and the control mechanism is connected to the head of the first bolt; the control mechanism and the third bolt are arranged on opposite sides of the upper ring.

[0019] A further technical solution is that the driving mechanism also includes a shell; the motor, the driving gear and the adjusting nut gear are all arranged in the shell; a first partition cavity is arranged in the shell; and a cable connected to the motor passes through the first partition cavity.

[0020] The beneficial technical effects of the present invention are as follows

[0021] (1) The electric intelligent orthopedic external fixator in the present invention is provided with a motor, which drives the active gear to rotate and drives the adjusting nut gear to rotate, so as to extend or shorten the telescopic mechanism, thereby realizing the electric control of the fixed length of the electric intelligent orthopedic external fixator. The electric control operation is more convenient, and no complicated mechanical operation is required, thereby improving the operation efficiency. In addition, a sensor is provided in the driving mechanism, and the target object for the sensor to detect is provided on the screw. When the screw rotates to extend or extend into the sleeve, the target object rotates synchronously with the screw and is detected by the sensor. That is, through the target object, the sensor can accurately sense the number of rotations of the screw. The high-precision sensor can provide more accurate and reliable data, realize more refined control, and accurately adjust the length of the telescopic mechanism. In actual use, the travel of the telescopic rod can be preset and the sensor can be used to detect whether the telescopic rod is extended or shortened to the limit length, so as to avoid the screw from being stuck and extend the service life of the telescopic mechanism. By setting a sensor with high detection accuracy, the intelligence level of the electric intelligent orthopedic external fixator is improved, and a smoother and more natural user experience is provided.

[0022] (2) Furthermore, the driving gear contacts the first flat position through the triangular stop, that is, around the top of the protrusion of the triangular stop, and the driving gear can swing to the lower sides of the triangular stop protrusion. When the driving mechanism is installed on the telescopic mechanism, the driving gear and the driven gear are not always aligned between the teeth and can be inserted and meshed. At this time, by swinging the driving gear, the angle of the driving gear can be quickly adjusted so that the tooth portion of the driving gear is aligned with the gap between the teeth of the driven gear, and the driving gear and the driven gear are meshed. Even if the electric intelligent orthopedic external fixator is set on the patient and the driven gear is not easy to adjust, the driving mechanism can be quickly installed without affecting the treatment effect. In addition, since the sensor is set on the circuit board and the target object is set on the gear on the adjusting nut, the rotation of the driving gear when the driving mechanism is installed will not affect the position of the sensor and the target object, thereby avoiding affecting the detection accuracy of the driving mechanism on the telescopic mechanism.

[0023] (3) Furthermore, a clearance groove is provided on the circuit board, and the telescopic mechanism passes through the clearance groove so that the sensor on the circuit board can be close to and set just above the target object, thereby further ensuring the detection accuracy of the sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the three-dimensional structure of an electric intelligent orthopedic external fixator in the first embodiment of the present invention is shown.

[0025] Figure 2 The diagram shows a three-dimensional structure of a telescopic mechanism and a driving mechanism in an electric intelligent orthopedic external fixator in the first embodiment of the present invention.

[0026] Figure 3The vertical cross-sectional structure diagram of the telescopic mechanism and the driving mechanism in the electric intelligent orthopedic external fixator in the first embodiment of the present invention is shown.

[0027] Figure 4 The figure shows a schematic diagram of the assembly structure of the driving gear, the base and the sleeve in the electric intelligent orthopedic external fixator in the first embodiment of the present invention.

[0028] Figure 5 A schematic diagram of the vertical cross-section structure of an electric intelligent orthopedic external fixator in the second embodiment of the present invention is shown.

[0029] Figure 6 A cross-sectional view of the telescopic assembly mechanism in the electric intelligent orthopedic external fixator in the third embodiment of the present invention is shown.

[0030] Figure 7 The diagram shows the internal structure of the junction box in the electric intelligent orthopedic external fixator in the third embodiment of the present invention.

[0031] Markings in the accompanying drawings:

[0032] 1. Control mechanism; 11. Host; 12. Junction box; 121. Second baffle; 122. Second partition cavity; 2. Upper ring; 3. Lower ring; 4. Telescopic mechanism; 41. Sleeve; 411. Limiting groove; 412. Limiting ring; 42. Screw; 43. Adjusting nut gear; 431. Target; 432. Driven gear; 433. Driven nut; 5. Driving mechanism; 51. Motor; 52. Circuit board; 521. Sensor; 522. Avoiding groove; 53. Reducer; 531. Output shaft; 532. Driving gear; 533. Triangular stop; 534. First flat position; 54. Base; 541. Pin; 55. Threaded connection hole; 6. Cable; 71. First bolt; 72. Second bolt; 73. Third bolt; 8. Housing; 81. First baffle; 811. First partition cavity; 82. Sealing ring; 83. Sealing ring. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical scheme and advantages of the present invention clearer, the device proposed by the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present invention will be clearer. It should be noted that the accompanying drawings adopt a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size, etc. illustrated by the accompanying drawings of this specification are only used to match the content disclosed in the specification, so that people familiar with this technology can understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they do not have technical substantive significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that the present invention can produce and the purpose that can be achieved, should still fall within the scope of the technical content disclosed by the present invention.

[0034] In the description of the present invention, the orientations or positional relationships indicated by terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, and “circumferential” are defined as orientations or positional relationships based on those shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] Embodiment 1

[0036] Figure 1 A three-dimensional structural schematic diagram of the electric intelligent orthopedic external fixator of the present invention is shown. Figure 2 A three-dimensional structural schematic diagram of the telescopic mechanism and the driving mechanism in the electric intelligent orthopedic external fixator of the present invention is shown.

[0037] Figure 3 The vertical cross-sectional structure diagram of the telescopic mechanism and the driving mechanism in the electric intelligent orthopedic external fixator of the present invention is shown. Figure 1 , Figure 2 and Figure 3The electric intelligent orthopedic external fixator includes a telescopic mechanism 4, an upper ring 2, a lower ring 3, a driving mechanism 5 and a control mechanism 1. The telescopic mechanism 4 includes a sleeve 41 and a screw 42. One end of the sleeve 41 is hinged to the upper ring 2, and the other end of the sleeve 41 is sleeved on the screw 42. The end of the screw 42 away from the sleeve 41 is hinged to the lower ring 3. Bone needles are respectively provided on the upper ring 2 and the lower ring 3. The position between the upper ring 2 and the lower ring 3 is adjusted by the extension and shortening of the telescopic assembly. An adjusting nut gear 43 is provided on the screw 42. The driving mechanism 5 includes a motor 51, an output shaft 531 and a circuit board 52. The motor 51 drives the output shaft 531. A driving gear 532 is provided on the output shaft 531. Specifically, the motor 51 is connected to the reducer 53, and the rotating shaft of the reducer 53 is the output shaft 531. The driving gear 532 meshes with the adjusting nut gear 43. The motor 51 drives the driving gear 532 to rotate, driving the adjusting nut gear 43 to rotate, so as to extend or shorten the telescopic mechanism 4, thereby realizing the electric control of the fixed length of the electric intelligent orthopedic external fixator. The electric control operation is more convenient, without the need for complex mechanical operation, and improves the operating efficiency. The control mechanism 1 is arranged on the upper ring 2, and the control mechanism 1 is connected to the driving mechanism 5.

[0038] Among them, a target object 431 is set on the screw 42. The driving mechanism 5 includes a sensor 521. The sensor 521 detects the target object 431. When the motor 51 drives the screw 42 to rotate, the sensor 521 can accurately sense the number of rotations of the screw 42 through the target object 431, and then obtain the real-time length of the telescopic mechanism 4, thereby improving the intelligence of the electric control. The circuit board 52 is connected to the motor 51. The circuit board 52 is connected to the sensor 521. The sensor 521 and the motor 51 are directly controlled by the circuit board 52 without connecting the control structure. At this time, the control mechanism 1 only needs to send a command to the circuit board 52, which greatly reduces the number of cables 6 between the control mechanism 1 and the driving mechanism 5, simplifies the electric intelligent orthopedic external fixator system, reduces the negative impact of the electric intelligent orthopedic external fixator on patients after electrification, and improves the treatment effect.

[0039] Figure 4 The schematic diagram of the assembly structure of the driving gear, base and sleeve in the electric intelligent orthopedic external fixator of the present invention is shown. Figure 1 and Figure 4, the inner wall of the connecting hole of the driving gear 532 is raised, forming a triangular stop 533 that is high in the middle and low on both sides. A first flat position 534 is set on the output shaft 531. The triangular stop 533 is against the flat position. That is, around the top of the protrusion of the triangular stop 533, the driving gear 532 can swing to the two sides of the lower protrusion of the triangular stop 533. When the driving mechanism 5 is installed on the telescopic mechanism 4, the teeth of the driving gear 532 and the driven gear 432 are not always aligned and can be inserted and meshed. At this time, by swinging the driving gear 532, the angle of the driving gear 532 can be quickly adjusted, so that the teeth of the driving gear 532 are aligned with the gap between the teeth of the driven gear 432, and the driving gear 532 and the driven gear 432 are meshed. Even if the electric intelligent orthopedic external fixator is set on the patient and the driven gear 432 is not easy to adjust, the driving mechanism 5 can be quickly installed without affecting the treatment effect. In addition, since the sensor 521 is set on the circuit board 52 and the target 431 is set on the gear on the adjusting nut, the rotation of the active gear 532 when the driving mechanism 5 is installed will not affect the position of the sensor 521 and the target 431, thereby avoiding affecting the detection accuracy of the driving mechanism 5 on the telescopic mechanism 4.

[0040] Preferably, the adjusting nut gear 43 includes a driven gear 432 and a driven nut 433. The driven gear 432 and the driven nut 433 are coaxially connected, and the driven nut 433 is fixedly connected to the driven gear 432 by a screw. The driven gear 432 is rotationally connected to the sleeve 41, and the driven nut 433 is threadedly connected to the screw 42. A limit ring 412 is clamped on the sleeve 41, and the limit ring 412 is arranged between the driven gear 432 and the driven nut 433 to limit the position of the adjusting nut gear 43. The driving gear 532 drives the driven gear 432 to rotate, and the driven gear 432 drives the driven nut 433 to rotate synchronously, thereby driving the screw 42 to extend into or out of the sleeve 41.

[0041] More preferably, six telescopic mechanisms 4 are provided, and there is an acute angle between adjacent telescopic mechanisms 4. Specifically, six telescopic mechanisms 4 are provided, and the six telescopic mechanisms 4 can form a three-dimensional spatial structure, which can more effectively resist forces from different directions and enhance the overall rigidity and stability. By adjusting the length of any one of the telescopic mechanisms 4, the position between the upper ring 2 and the lower ring 3 can be changed to treat different diseases.

[0042] Please refer to Figure 1 , Figure 3 and Figure 4, two sensors 521 are provided, and the two sensors 521 are provided at 90° around the axis of the screw 42. The target 431 is provided on the adjusting nut gear 43 and is provided around the screw 42. When the adjusting nut gear 43 drives the screw 42 to rotate, the target 431 will also rotate along with the adjusting nut gear 43. The rotation angle of the target 431 corresponds to the rotation angle of the screw 42 one by one, thereby eliminating the error generated when the target 431 indirectly measures the rotation angle of the screw 42, and reducing the accuracy requirements for related components.

[0043] In this embodiment, the sensor 521 may be a Hall element, and the target object 431 is a rotating magnetic disk. When the rotating magnetic disk rotates with the screw 42, the magnetic field generated by the magnetic disk also changes accordingly. When the magnetic field passes through the Hall element, a potential difference signal is generated, and the magnitude of the signal is linearly related to the displacement of the rotating magnetic disk. By using two Hall elements, the position and motion state of the object can be accurately measured.

[0044] Preferably, the sensor 521 is arranged on the circuit board 52. The circuit board 52 is provided with a position-avoiding groove 522, and the telescopic mechanism 4 passes through the position-avoiding groove 522. The sensor 521 on the circuit board 52 can be close to and arranged just above the target object 431, further ensuring the detection accuracy of the sensor 521.

[0045] Please refer to Figure 1 , Figure 3 and Figure 4 The driving mechanism 5 further includes a base 54. The motor 51 is disposed on the base 54. At least two plugs 541 are extended from the base 54. The end of the plug 541 is provided with a threaded connection hole 55 for connecting with the housing 8. The housing 8, the plug 541 and the base 54 hold the screw rod 42. Specifically, the bolt passes through the housing 8 and is screwed into the threaded connection hole 55 to connect the housing 8 and the threaded connection hole 55, so that the housing 8 cooperates with the base 54 to hold the sleeve 41, and the driving mechanism 5 is fixed on the telescopic mechanism 4.

[0046] Preferably, a limiting groove 411 is formed at one end of the sleeve 41 close to the screw rod 42, and the latch 541 passes over the sleeve 41 along the limiting groove 411. The limiting groove 411 further fixes the base 54 on the sleeve 41, improving the stability of the drive mechanism 5 when it is fixed on the telescopic mechanism 4.

[0047] More preferably, the sleeve 41 and the upper ring 2, as well as the screw 42 and the lower ring 3 are connected by a Hooke hinge. The Hooke hinge allows a certain angle deviation between the two connected parts, thereby improving the flexibility of the electric intelligent orthopedic external fixator. At the same time, the Hooke hinge has a self-locking property, which prevents the electric intelligent orthopedic external fixator from deforming during the treatment process, thereby ensuring the treatment effect of the electric intelligent orthopedic external fixator.

[0048] The specific workflow of this embodiment is as follows:

[0049] The operator sends a command to the circuit board 52 through the control mechanism 1. The circuit board 52 drives the driving gear 532 to rotate through the motor 51, and then drives the driven gear 432 and the driven nut 433 to rotate, so that the screw 42 extends out of the sleeve 41 or the screw 42 extends into the sleeve 41. During this process, the sensor 521 continuously detects the calibration object, obtains the number of rotations of the screw 42, and then obtains the length of the telescopic mechanism 4. Until the upper ring 2 and the lower ring 3 reach the predetermined position, the electric intelligent orthopedic external fixator is placed on the patient's limbs. Then fix the bone needles on the upper ring 2 and the lower ring 3, and insert the bone needles.

[0050] When the drive mechanism 5 needs to be replaced during the fixation treatment of the orthopedic external fixator, remove the screw screwed into the threaded connection hole 55, and then remove the drive mechanism 5. Prepare a new drive mechanism 5, move the drive mechanism 5 to the installation position of the telescopic mechanism 4, rotate the driving gear 532 until the tooth portion of the driving gear 532 is aligned with the tooth gap between the driven gear 432, and push the drive mechanism 5 until the driving gear 532 and the driven gear 432 are engaged. Then the screw passes through the housing 8 and is screwed into the threaded connection hole 55, fixes the drive mechanism 5 and installs the housing 8, and the replacement of the drive mechanism 5 is completed.

[0051] Embodiment 2

[0052] Figure 5 FIG. 2 shows a schematic diagram of the vertical cross-section structure of an electric intelligent orthopedic external fixator in the second embodiment of the present invention. Figure 5 Based on the first embodiment, the second embodiment discloses an electric intelligent orthopedic external fixator, wherein a first bolt 71, a second bolt 72 and a third bolt 73 are arranged on the upper ring 2, and the first bolt 71 and the second bolt 72 pass through the upper ring 2 in the same direction. The third bolt 73 connects the first bolt 71 and the second bolt 72 at the same time, and the control mechanism 1 connects the head of the first bolt 71. The control mechanism 1 and the first bolt 71 can be connected by screws. The control mechanism 1 and the third bolt 73 are arranged on opposite sides of the upper ring 2.

[0053] Specifically, a plurality of holes are provided on the upper ring 2 and the lower ring 3 of the electric intelligent orthopedic external fixator to connect the telescopic mechanism 4. The first bolt 71 and the second bolt 72 pass through the upper ring 2 along the holes, and then are connected by the third bolt 73. The upper ring 2 is held by the first bolt 71, the second bolt 72 and the third bolt 73 to realize the connection between the control mechanism 1 and the upper ring 2. The second bolt 72 in the connection structure only plays a supporting role. When the specification of the upper ring 2 changes, resulting in a change in the distance between adjacent holes, the position of the second bolt 72 can be adjusted, as long as the second bolt 72 is still around the support control mechanism 1. That is, the control mechanism 1 can be flexibly set on upper rings 2 of different specifications without replacing parts, thereby reducing the cost of parts.

[0054] Embodiment 3

[0055] Figure 6 The cross-sectional view of the telescopic assembly mechanism in the electric intelligent orthopedic external fixator in the third embodiment of the present invention is shown. Figure 2 and Figure 6 Based on the first and second embodiments, the third embodiment discloses an electric intelligent orthopedic external fixator, whose driving mechanism 5 also includes a shell 8. The motor 51, the driving gear 532 and the adjusting nut gear 43 are all arranged in the shell 8. The shell 8 is screwed to the base 54. The shell 8 can be set in parts, and the adjacent components of the shell 8 are spliced ​​by a stopper structure. The shell 8 set in parts reduces the volume of a single component, making transportation and storage more convenient. At the same time, when the parts inside the shell 8 are damaged, the single component in the shell 8 can be removed separately, making the maintenance and inspection of the orthopedic fixation external fixator more convenient, and the technicians can more easily access the parts inside the shell 8 for inspection and repair. In addition, the shell 8 is spliced ​​by the stopper structure, and the stopper structure can effectively prevent the penetration of moisture through physical isolation, reduce the impact of water on the electronic components inside the shell 8, and ensure the waterproof performance of the shell 8.

[0056] In this embodiment, a first baffle 81 is provided in the outer shell 8, and the first baffle 81 cooperates with the outer shell 8 to form a first partition cavity 811. The cable 6 connected to the motor 51 passes through the first partition cavity 811 and then connects to the electronic components inside the outer shell 8. The first partition cavity 811 can effectively isolate the moisture that enters the outer shell 8 along the cable 6 to prevent the moisture from affecting the electronic components inside the outer shell 8. The first partition cavity 811 can be filled with sealant to further enhance the waterproof performance of the outer shell 8. The filled sealant also fixes the position of the cable 6, especially the position of the skin of the cable 6. Reduce the displacement between the skin of the cable 6 and the core of the cable 6 to avoid the safety hazard caused by the exposed core of the cable 6.

[0057] Preferably, a sealing ring 83 is provided between the cable 6 and the housing 8. The sealing ring 83 is sleeved on the cable 6. The sealing performance between the cable 6 and the housing 8 is enhanced by the sealing ring 83. At least two annular flanges are provided on the sealing ring 83, one annular flange is provided on the inner side of the housing 8, and the other annular flange is provided on the outer side of the housing 8. The annular flanges cooperate with each other to fix the position between the sealing ring 83 and the housing 8.

[0058] More preferably, the telescopic mechanism 4 passes through the driving mechanism 5, so the housing 8 also partially wraps the telescopic mechanism 4. A sealing ring 82 is provided between the housing 8 and the sleeve 41, and between the housing 8 and the driven nut 433. The sealing ring 82 prevents moisture from entering the housing 8, thereby improving the waterproof performance of the housing 8.

[0059] Figure 7The figure shows the internal structure of the junction box in the electric intelligent orthopedic external fixator in the third embodiment of the present invention. Figure 7 The control mechanism 1 is divided into a host 11 and a junction box 12, and the host 11 and the junction box 12 are connected or plugged by fasteners. The fasteners can be bolts, screws, rivets, etc. The position where the cable 6 enters the control mechanism 1 is most susceptible to moisture infiltration. The control mechanism 1 is divided into the host 11 and the junction box 12. Even if moisture infiltrates along the cable 6, the moisture will only enter the junction box 12 and will not affect the electronic components inside the host 11.

[0060] Preferably, a second baffle 121 is provided in the junction box 12, and the second baffle 121 cooperates with the junction box 12 to form a second partition cavity 122. The cable 6 extending into the junction box 12 first passes through the second partition cavity 122. The second partition can effectively isolate moisture entering the junction box 12.

[0061] More preferably, the second partition cavity 122 can be filled with sealant to further enhance the waterproof performance of the junction box 12. The filled sealant fixes the position of the cable 6, especially the position of the skin of the cable 6. The displacement between the skin of the cable 6 and the core of the cable 6 is reduced to avoid the safety hazard caused by the exposed core of the cable 6. At the same time, a sealing ring 83 can also be provided between the cable 6 and the junction box 12 to further enhance the waterproof performance between the cable 6 and the junction box 12.

[0062] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. Electric intelligent orthopedic external fixator, characterized in that: The electric intelligent orthopedic external fixator comprises a telescopic mechanism, an upper ring, a lower ring and a driving mechanism; The telescopic mechanism comprises a sleeve and a screw; one end of the sleeve is hinged to the upper ring, and the other end of the sleeve is sleeved on the screw; one end of the screw away from the sleeve is hinged to the lower ring; an adjusting nut gear is arranged on the screw; The driving mechanism comprises a motor and an output shaft; the motor drives the output shaft; a driving gear is arranged on the output shaft; the driving gear meshes with the adjusting nut gear; Wherein, a target object is arranged on the screw rod; the driving mechanism comprises a sensor; and the sensor detects the target object.

2. The electric intelligent orthopedic external fixator according to claim 1, characterized in that: The inner wall of the connecting hole of the driving gear is raised to form a triangular stop that is high in the middle and low on both sides; a first flat position is arranged on the output shaft; and the triangular stop is against the flat position.

3. The electric intelligent orthopedic external fixator according to claim 1, characterized in that: Two sensors are provided, and the two sensors are arranged around the axis of the screw at 90 degrees; the target object is arranged on the adjusting nut gear.

4. The electric intelligent orthopedic external fixator according to claim 1, characterized in that: The driving mechanism also includes a base; the motor is arranged on the base; at least two pins are extended from the base; threaded connection holes are provided at the ends of the pins to connect to the shell; the shell pins and the base hold the screw rod.

5. The electric intelligent orthopedic external fixator according to claim 4, characterized in that: A limiting groove is formed at one end of the sleeve close to the screw rod; the latch pin passes over the sleeve along the limiting groove.

6. The electric intelligent orthopedic external fixator according to claim 1, characterized in that: The adjusting nut gear comprises a driven gear and a driven nut; the driven gear and the driven nut are coaxially connected; the driven gear is rotationally connected to the sleeve, and the driven nut is threadedly connected to the screw rod.

7. The electric intelligent orthopedic external fixator according to claim 1, characterized in that: Six telescopic mechanisms are provided, and there are acute angles between adjacent telescopic mechanisms.

8. The electric intelligent orthopedic external fixator according to claim 1, characterized in that: The upper ring is also provided with a control mechanism; the driving mechanism includes a circuit board; the circuit board is connected to the motor and the sensor; and the control mechanism is connected to the circuit board.

9. The electric intelligent orthopedic external fixator as claimed in claim 8, characterized in that: The upper ring is provided with a first bolt, a second bolt and a third bolt, the first bolt and the second bolt pass through the upper ring in the same direction; the third bolt connects the first bolt and the second bolt at the same time, and the control mechanism is connected to the head of the first bolt; the control mechanism and the third bolt are arranged on opposite sides of the upper ring.

10. The electric intelligent orthopedic external fixator according to claim 1, characterized in that: The driving mechanism further comprises a housing; the motor, the driving gear and the adjusting nut gear are all arranged in the housing; a first partition cavity is arranged in the housing; and a cable connected to the motor passes through the first partition cavity.

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