Telescopic angle-adjustable abrasive drill for orthopedic surgery

Abstract

The invention discloses a telescopic orthopedic surgery angle-adjustable abrasive drill, and particularly relates to the technical field of medical instruments, the telescopic orthopedic surgery angle-adjustable abrasive drill comprises a grinding head, an operating rod and a handle, and further comprises a telescopic adjusting assembly and an angle adjusting assembly. Through the arrangement of the telescopic adjusting assembly, when the length of the operating rod is adjusted, a first driving wheel in a pressing state is rotated, a first rotating shaft can be driven to rotate through a first driving rod and a first transmission part, and when the first rotating shaft rotates, a first winding roller can be driven to wind and unwind a flexible driving wire; the length of the flexible driving wire can be adjusted in cooperation with extension and shortening of the operating rod, so that the length of the operating rod can be adapted to drive the grinding head to conduct transmission, torque is transmitted to the rotating connector and the grinding head to the maximum extent, the grinding head can rotate at a high speed, doctors can conveniently conduct grinding operation of orthopedic surgery, and the market blank is filled; therefore, the accuracy and the safety of the operation are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and more specifically, to a telescopic orthopedic surgical angle adjustable drill. Background Technology

[0002] Orthopedic surgery is complex and high-risk. Traditional tools have limited precision and the complication rate caused by traditional surgical tools is as high as 15%. With the increasing number of patients with orthopedic diseases, the demand for efficient and precise surgical tools is becoming more and more urgent.

[0003] Existing orthopedic surgical drills can only adjust the angle of the drill head, not the shank length. For example, invention patent application CN202211704704.8 discloses an angle-adjustable drill for orthopedic robots, including a drill head mechanism, a fixing mechanism, and a bending drive mechanism. The drill head mechanism includes a drill head drive unit, a drive shaft, a bendable transmission component, and a drill head connected in sequence. The fixing mechanism includes a drive shaft fixing component and a drill head fixing component. The drive shaft is rotatably mounted on the drive shaft fixing component, and the drill head is rotatably mounted on the drill head fixing component. The drive shaft fixing component and the drill head fixing component are rotatably connected, and when rotated, they cause the bendable transmission component to bend, allowing the bendable transmission component to transmit torque in a bent state. The bending drive mechanism includes a bending screw, a limiting screw, and a bending drive unit. The bending screw and the limiting screw are respectively connected to the drill head fixing component and the bending drive unit, and are located on both sides of the rotation axis of the drive shaft fixing component and the drill head fixing component. The bending drive unit is used to drive the bending screw and the limit screw to adjust the rotation angle of the drill bit fixing member relative to the drive shaft fixing member. However, it can only adjust the angle of the grinding head, but not the rod length. If a suitable rod length is desired, a different model of drill bit needs to be replaced. In particular, the design of the turning structure of this drill bit also restricts its ability to adjust the extension and retraction.

[0004] For example, application number CN202021248735.3 discloses a minimally invasive orthopedic spinal surgery drill, including a handle and a drill rod. One end of the handle is fixedly connected to a mounting block, and a micro-motor is fixedly connected inside the handle. The output end of the micro-motor is fixedly connected to a first rotating shaft. The end of the first rotating shaft away from the micro-motor extends into the mounting block and is fixedly connected to a rotating block. One end of the drill rod is fixedly connected to a grinding head, and another end is fixedly connected to a connecting member. The end of the connecting member away from the drill rod extends into the rotating block. A second rotating shaft is rotatably connected to the connecting member via a bearing, and a first conical tooth is fixedly connected to the surface of the second rotating shaft. Although it has a telescopic component to adjust the length, the grinding head angle cannot be adjusted. Achieving both angle and telescopic adjustment simultaneously for the relatively thin operating rods used in orthopedic surgery is very difficult, and this area currently remains untapped in the market.

[0005] Therefore, it is necessary to simultaneously adjust the grinding head angle and the length of the operating lever on a relatively thin operating lever for actual orthopedic surgery. This can reduce the need for operating lever replacements, shorten orthopedic surgery time, and improve efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a telescopic orthopedic surgical drill with adjustable angle to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a telescopic orthopedic surgical angle-adjustable drill, comprising a grinding head, an operating rod, and a handle, wherein a rotating sleeve is hinged to the end of the operating rod, the grinding head is rotatably connected within the rotating sleeve, and the operating rod contains a flexible drive wire for transmitting torque to the grinding head and two drive lines for pulling the rotating sleeve to rotate. The operating rod is composed of several nested telescopic sections and further includes: A telescopic adjustment assembly, wherein the telescopic adjustment assembly is used to adjust the length of the flexible drive wire according to the length of the operating rod; An angle adjustment component is used to adjust the angle of the grinding head and to synchronously adjust the lengths of the two drive lines according to the length of the operating lever.

[0008] Preferably, the telescopic adjustment assembly includes a take-up chamber rotatably connected to the handle, a first rotating shaft rotatably connected to the take-up chamber, a first take-up roller fixed on the first rotating shaft, one end of the flexible drive wire being drivenly connected to the grinding head, and the other end being wound around the first take-up roller; The take-up compartment is provided with a first transmission component at one end of the first rotating shaft, which can be operated to rotate or lock the first rotating shaft.

[0009] Preferably, the first transmission component is slidably connected to the first limiting groove at the end of the first rotating shaft, and a first elastic element is provided between the first transmission component and the first limiting groove; A first mounting plate is fixed on the first transmission component, and the first mounting plate is provided with a plurality of first slots. The winding chamber is provided with a first locking block that cooperates with the first slots to achieve locking.

[0010] Preferably, the handle is provided with a first drive groove, and a first drive rod is provided in the first drive groove. One end of the first drive rod can engage with the second limiting groove at the end of the first transmission member, and the other end is connected to a first drive wheel. The first drive rod is slidably connected to the first drive groove via a first support plate, and a second elastic element is provided between the first support plate and the first drive groove.

[0011] Preferably, the angle adjustment assembly includes a mounting bracket rotatably connected to the handle, a second rotating shaft rotatably connected to the mounting bracket, two second take-up rollers fixed on the second rotating shaft, one end of each of the two drive lines being connected to both sides of the rotating sleeve, and the other end being wound around the two second take-up rollers respectively. The mounting bracket is provided with a second transmission element at one end corresponding to the second rotating shaft, which can be operated to rotate or lock the second rotating shaft.

[0012] Preferably, the second transmission component is slidably connected to the third limiting groove at the end of the second rotating shaft, and a third elastic component is provided between the second transmission component and the third limiting groove; The second transmission component is fixed with a second mounting plate, the second mounting plate is provided with a plurality of second slots, and the mounting bracket is provided with a second locking block that cooperates with the second slots to achieve locking.

[0013] Preferably, the handle is provided with a second drive groove, and a second drive rod is provided in the second drive groove. One end of the second drive rod can engage with the fourth limiting groove at the end of the second transmission member, and the other end is connected to a second drive wheel. The second drive rod is slidably connected to the second drive groove via the second support plate, and a fourth elastic element is provided between the second support plate and the second drive groove.

[0014] Preferably, a support shaft is connected to the mounting bracket, and a connecting groove is provided on the handle, with the support shaft rotatably connected to the connecting groove; The support shaft end is provided with a fifth limiting groove, and the communicating groove is provided with an adjusting rod that is slidably connected in the fifth limiting groove. The other end of the adjusting rod extends out of the handle and is connected to an adjusting knob. The adjustment knob engages with multiple third slots on the handle via a third locking block to enable rotation and locking of the mounting bracket.

[0015] Preferably, the winding chamber is provided with a limiting tube at one end near the operating rod, the flexible drive wire passes through the limiting tube, and the operating rod is provided with a limiting clip inside to restrict the swing of the flexible drive wire; The operating lever is equipped with a limiting rod inside to restrict and guide the drive line.

[0016] Preferably, the telescopic joints inside the operating lever are all tapered structures that are thinner at the front and thicker at the back.

[0017] The technical effects and advantages of this invention are as follows: 1. This invention, through the setting of the telescopic adjustment component, allows the first drive wheel in the pressed state to rotate when the length of the operating rod is adjusted. This rotation, via the first drive rod and the first transmission component, drives the first rotating shaft to rotate. The rotation of the first rotating shaft drives the first take-up roller to take up and unwind the flexible drive wire. This allows for length adjustment of the flexible drive wire in conjunction with the extension and shortening of the operating rod, thereby adapting to the length of the operating rod to drive the grinding head. This maximizes the torque transmission to the rotating connector and the grinding head, enabling the grinding head to rotate at high speed. This facilitates grinding operations in orthopedic surgery for doctors, fills a market gap, and improves surgical accuracy and safety. 2. By setting up an angle adjustment component, when adjusting the length of the operating lever, rotating the second drive wheel in the pressed state can drive the second rotating shaft to rotate via the second drive rod and the second transmission component. When the second rotating shaft rotates, it can drive the two second take-up rollers to take up and unwind the two drive lines, adjusting the length of the drive lines. This can be coordinated with the extension and shortening of the operating lever to adjust the length of the drive lines, thereby adapting to the length of the operating lever to adjust the angle of the grinding head, improving surgical accuracy and reducing surgical difficulty. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 This is a cross-sectional view of the internal structure of the operating lever and rotating sleeve of the present invention.

[0020] Figure 3 This is a cross-sectional view of the internal structure of the handle of the present invention.

[0021] Figure 4 For the present invention Figure 3 Enlarged view of the structure of part A.

[0022] Figure 5 This is a stepped cross-sectional view of the inside of the handle of the present invention.

[0023] Figure 6 This is an exploded view of the telescopic adjustment component of the present invention.

[0024] Figure 7 This is an exploded view of the first transmission component of the present invention.

[0025] Figure 8 This is a schematic diagram showing the position of the third slot on the handle of the present invention.

[0026] Figure 9 This is a schematic diagram of the internal structure of the adjusting groove of the present invention.

[0027] Figure 10 This is an exploded view of the angle adjustment component of the present invention.

[0028] Figure 11 This is a schematic diagram of the second drive rod part of the present invention.

[0029] Figure 12 This is an exploded view of the second transmission component of the present invention.

[0030] The attached figures are labeled as follows: 1. Grinding head; 11. Rotating sleeve; 12. Rotating connector; 13. Flexible drive wire; 14. Drive handle; 2. Operating lever; 3. Handle; 4. Telescopic adjustment assembly; 41. Rewinding chamber; 42. Rotary groove; 43. Support base; 44. First rotating shaft; 45. First winding roller; 46. Limiting tube; 47. Limiting clip; 48. Mounting groove; 49. First transmission component; 410. First limiting groove; 411. First elastic component; 412. First mounting plate; 413. First slot; 414. First locking block; 415. First drive groove; 416. First drive rod; 417. First support plate; 418. Second elastic component; 419. Second limiting groove; 420. First drive wheel 5. Angle adjustment assembly; 51. Mounting bracket; 52. Adjustment groove; 53. Second rotating shaft; 54. Second take-up roller; 55. Drive line; 56. Mounting box; 57. Second transmission component; 58. Third limiting groove; 59. Third elastic component; 510. Second mounting plate; 511. Second slot; 512. Second locking block; 513. Second drive groove; 514. Second drive rod; 515. Second support plate; 516. Fourth elastic component; 517. Fourth limiting groove; 518. Second drive wheel; 519. Support shaft; 520. Connecting groove; 521. Fifth limiting groove; 522. Adjustment rod; 523. Adjustment knob; 524. Third slot; 525. Third locking block; 526. Limiting rod. Detailed Implementation

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Example 1 refer to Figures 1 to 12An embodiment of the present invention provides a telescopic orthopedic surgical angle adjustable drill, comprising a grinding head 1, an operating rod 2, and a handle 3. The end of the operating rod 2 is hinged to a rotating sleeve 11, and the grinding head 1 is rotatably connected within the rotating sleeve 11. The inner side of the end of the operating rod 2 is rotatably connected to a rotating connector 12 via a support member. The other end of the rotating connector 12 is fixedly connected to the grinding head 1. The operating rod 2 is ball-jointed to the grinding head 1 via the rotating connector 12. The rotating connector 12 can be bent to transmit power, which is prior art and will not be described in detail here.

[0033] refer to Figure 1 and Figure 2 The operating rod 2 consists of several nested telescopic joints, which are tapered structures that are thinner at the front and thicker at the back. When stretched, the inner wall of the rear section fits tightly against the outer wall of the front section, and is fixed by friction. The specific principle can be found in the structure of a fishing rod.

[0034] refer to Figures 1 to 7 It also includes a telescopic adjustment assembly 4, which is rotatably connected to the handle 3. The assembly includes a take-up chamber 41, with a rotating groove 42 inside the handle 3. The take-up chamber 41 is rotatably connected to the rotating groove 42, which communicates with the inside of the operating lever 2. Inside the take-up chamber 41, two symmetrically arranged support seats 43 are rotatably connected to a first rotating shaft 44. A first take-up roller 45 is fixedly connected to the outer wall of the first rotating shaft 44. A flexible drive wire 13 is provided inside the operating lever 2. The flexible drive wire 13 can be a shape memory alloy wire or an SMA wire. One end of the flexible drive wire 13 is connected to a rotating connector 12. One end is fixedly connected to the other end, which extends into the take-up chamber 41 and is fixedly connected to the first take-up roller 45 and wound on the first take-up roller 45. The end of the take-up chamber 41 near the operating lever 2 is fixedly connected to a limiting tube 46 for constraining the flexible drive wire 13. The flexible drive wire 13 passes through the limiting tube 46. At least one limiting clip 47 is fixedly connected in each telescopic joint of the operating lever 2. The flexible drive wire 13 passes through each limiting clip 47. The limiting clip 47 is used to limit the flexible drive wire 13, prevent it from swinging and pulling excessively, provide torque to the maximum extent, and keep the drill rotating at high speed.

[0035] refer to Figures 4 to 7One of the support bases 43 has an internal mounting groove 48, and a first transmission member 49 is provided in the mounting groove 48. A first limiting groove 410 is provided at one end of the first rotating shaft 44 located in the mounting groove 48. One end of the first transmission member 49 is slidably connected in the first limiting groove 410. When the first transmission member 49 rotates, it can synchronously drive the first rotating shaft 44 to rotate. A first elastic member 411 is connected between the first transmission member 49 and the first limiting groove 410 and is sleeved in the first limiting groove 410. A first mounting plate 412 is fixedly connected to the outer wall of the first transmission member 49 and is sleeved in the mounting groove 48. A plurality of first slots 413 are evenly provided on the side of the first mounting plate 412 away from the first rotating shaft 44. A first locking block 414 that can cooperate with the plurality of first slots 413 for limiting is fixedly connected on the side of the mounting groove 48 away from the first rotating shaft 44.

[0036] refer to Figure 4 and Figure 5 The handle 3 has a first drive groove 415 inside that corresponds to the position of the mounting groove 48. The first drive groove 415 has a first drive rod 416 inside. The outer wall of the first drive rod 416 is rotatably connected to a first support plate 417 that is slidably connected inside the first drive groove 415. A second elastic member 418 is sleeved on the outside of the first drive rod 416 and connected between the first support plate 417 and the first drive groove 415.

[0037] refer to Figure 4 , Figure 6 and Figure 7 The first transmission member 49 has a second limiting groove 419 at one end away from the first rotating shaft 44. When the first drive rod 416 drives the first support plate 417 to compress the second elastic member 418 and move downward, one end can extend into the mounting groove 48 and slide to connect with the second limiting groove 419, and can drive the first transmission member 49 to rotate synchronously. The other end extends to the outside of the handle 3 and is fixedly connected to the first drive wheel 420.

[0038] refer to Figure 1 and Figure 3 The winding chamber 41 is fixedly connected to a drive handle 14 at one end away from the operating lever 2, and the other end of the drive handle 14 is connected to an external motor.

[0039] In actual use, when the length of the operating lever 2 needs to be adjusted, first press the first drive wheel 420 so that the end of the first drive lever 416 abuts against the outer wall of the take-up chamber 41, thereby driving the first support plate 417 to compress the second elastic element 415. Then rotate the drive handle 14, which drives the take-up chamber 41 to rotate within the rotating groove 42. (Refer to...) Figure 4 When the winding chamber 41 is rotated so that the mounting groove 48 corresponds to the position of the first drive groove 415, the end of the first drive rod 416 can enter the mounting groove 48, and at this time the rotation of the drive handle 14 is stopped. After the end of the first drive rod 416 enters the mounting groove 48, it will be inserted into the second limiting groove 419. At this time, further pressing the first drive wheel 420 can press the first transmission member 49 into the first limiting groove 410 through the first drive rod 416 and compress the first elastic member 411. During the movement of the first transmission member 49, it will drive the first mounting plate 412 to move, so that the first slot 413 and the first block 414 are separated, releasing the limitation on the first transmission member 49 and allowing the first transmission member 49 to rotate normally. At this time, by rotating the first drive wheel 420 in the pressed state, the first rotating shaft 44 can be driven to rotate through the first drive rod 416 and the first transmission member 49. When the first rotating shaft 44 rotates, it can drive the first take-up roller 45 to take up and unwind the flexible drive wire 13, thereby adjusting the length of the flexible drive wire 13.

[0040] When the operating lever 2 is extended, press the first drive wheel 420 and then pull the telescopic joint in the operating lever 2 to extend. During the extension process, the telescopic joint of the operating lever 2 will drive the first take-up roller 45 to unwind by rotating the connector 12 and the flexible drive wire 13. After each telescopic joint of the operating lever 2 is fully extended, due to the tapered structure that is thinner at the front and thicker at the back, the inner wall of the rear section will fit tightly with the outer wall of the front section, and the friction will help to fix it.

[0041] When the operating lever 2 is shortened, the telescopic joint extending from the operating lever 2 is pressed back, so that the flexible drive wire 13 inside the operating lever 2 changes from a tensioned state to a relaxed state. Then, the first drive wheel 420 in the pressed state is rotated, so that the first take-up roller 45 takes up the flexible drive wire 13, thereby adjusting the length of the flexible drive wire 13 according to the length of the operating lever 2.

[0042] When the operating lever 2 extends to the required length, the pressure on the first drive wheel 420 is released. The second elastic element 415 will push back the first support plate 417 and drive the first drive rod 416 and the first drive wheel 420 back to the initial position, so that the first drive rod 416 is pulled out from the mounting groove 48 and the end of the first drive rod 416 returns to the first drive groove 415, so as to avoid affecting the rotation of the subsequent winding chamber 41. During the process of the end of the first drive rod 416 returning to the inside of the first drive groove 415, the first elastic element 411 will push back the first transmission element 49, driving the first mounting plate 412 back to the initial position, so that the first locking block 414 can be inserted into the corresponding first locking groove 413 for limiting, preventing the first transmission element 49 from rotating, so that the first take-up roller 45 cannot take up and unwind the flexible drive wire 13, avoiding affecting the rotation operation of the grinding head 1.

[0043] When the length of the operating lever 2 is adjusted and grinding is required, the drive handle 14 is connected to an external motor. The external motor drives the drive handle 14 to rotate, and the drive handle 14 drives the flexible drive wire 13 to rotate synchronously through the winding chamber 41. During the rotation, the flexible drive wire 13 is limited by the limiting clip 47, which maximizes the torque transmission to the rotating connector 12 and the grinding head 1, enabling the grinding head 1 to rotate at high speed and perform grinding.

[0044] In summary, by setting the telescopic adjustment component 4, when adjusting the length of the operating lever 2, rotating the first drive wheel 420 in the pressed state can drive the first rotating shaft 44 to rotate through the first drive lever 416 and the first transmission component 49. When the first rotating shaft 44 rotates, it can drive the first take-up roller 45 to take up and unwind the flexible drive wire 13. It can adjust the length of the flexible drive wire 13 in conjunction with the extension and shortening of the operating lever 2, thereby adapting to the length of the operating lever 2 to drive the grinding head 1 for transmission. This maximizes the torque transmission to the rotating connector 12 and the grinding head 1, enabling the grinding head 1 to rotate at high speed. This facilitates the grinding operation of doctors in orthopedic surgery, fills a market gap, and improves the accuracy and safety of surgery.

[0045] Example 2 In actual use, the angle of the grinding head 1 cannot be adjusted after the length of the operating rod 2 is extended, which reduces the accuracy of the operation and increases the difficulty of the operation. Therefore, this embodiment improves the device described in the above embodiment.

[0046] refer to Figures 1 to 5 and Figures 8 to 12 It also includes an angle adjustment component 5, which includes a mounting frame 51. An adjustment groove 52 is provided inside the handle 3. The mounting frame 51 is rotatably connected to the adjustment groove 52. A second rotating shaft 53 is rotatably connected to the mounting frame 51. Two symmetrically arranged second take-up rollers 54 are fixedly connected to the outer wall of the second rotating shaft 53. Two drive lines 55 are provided inside the operating lever 2. One end of the two drive lines 55 is fixedly connected to both sides of the rotating sleeve 11, and the other end is fixedly connected to the two second take-up rollers 54 and wound on the two second take-up rollers 54 respectively. At least one set of limiting rods 526 is fixedly connected in each telescopic section of the operating lever 2. The limiting rods 526 are used to limit and guide the two drive lines 55.

[0047] refer to Figures 9 to 12One end of the mounting bracket 51 is fixedly connected to the mounting box 56. The mounting box 56 is provided with a second transmission component 57. The second rotating shaft 53 is located in the mounting box 56 and has a third limiting groove 58. One end of the second transmission component 57 is slidably connected in the third limiting groove 58. When the second transmission component 57 rotates, it can synchronously drive the second rotating shaft 53 to rotate. A third elastic component 59 is connected between the second transmission component 57 and the third limiting groove 58 and is sleeved in the third limiting groove 58. The outer wall of the second transmission component 57 is fixedly connected to a second mounting plate 510 sleeved in the mounting box 56. The side of the second mounting plate 510 away from the second rotating shaft 53 is evenly provided with a plurality of second slots 511. The side of the mounting box 56 away from the second rotating shaft 53 is fixedly connected to a second locking block 512 that can cooperate with the plurality of second slots 511 for limiting. The handle 3 has a second drive groove 513 inside that corresponds to the position of the mounting box 56. The second drive groove 513 has a second drive rod 514 inside. The outer wall of the second drive rod 514 is rotatably connected to a second support plate 515 that is slidably connected inside the second drive groove 513. A fourth elastic member 516 sleeved on the outside of the second drive rod 514 is connected between the second support plate 515 and the second drive groove 513. The second transmission component 57 has a fourth limiting groove 517 at one end away from the second rotating shaft 53. When the second drive rod 514 drives the second support plate 515 to compress the fourth elastic member 516 and move downward, one end can extend into the mounting box 56 and slide in connection with the fourth limiting groove 517, and can drive the second transmission component 57 to rotate synchronously. The other end extends to the outside of the handle 3 and is fixedly connected to the second drive wheel 518.

[0048] refer to Figures 8 to 10 A support shaft 519 is fixedly connected to the center of one side of the mounting bracket 51. A connecting groove 520 connecting the adjustment groove 52 is opened on the outer side of the handle 3. The support shaft 519 is rotatably connected in the connecting groove 520. A fifth limiting groove 521 is opened at one end of the support shaft 519 located in the connecting groove 520. An adjustment rod 522 is provided in the connecting groove 520. One end of the adjustment rod 522 is slidably connected in the fifth limiting groove 521, and the other end extends to the outer side of the handle 3 and is fixedly connected to an adjustment knob 523. Multiple third slots 524 are evenly opened on the outer periphery of the connecting groove 520 on the outer side of the handle 3. A third locking block 525 that can cooperate with the multiple third slots 524 for limiting is fixedly connected to the inner side of the adjustment knob 523.

[0049] In actual use, when it is necessary to adjust the angle of grinding head 1, the third locking block 525 is pulled out from the third locking slot 524 by pulling the adjustment knob 523, releasing the limit on the adjustment rod 522. At this time, the adjustment rod 522 can rotate in the connecting groove 520. By rotating the adjustment knob 523, the adjustment rod 522 can be moved synchronously. During the rotation of the adjustment rod 522, the mounting bracket 51 will be rotated synchronously through the support shaft 519. (Reference) Figure 2 and Figure 3 During the rotation of the mounting frame 51, the two second take-up rollers 54 will rotate synchronously. When the two second take-up rollers 54 rotate, they will drive the rotating sleeve 11 to rotate synchronously through the two drive lines 55, thereby adjusting the angle of the grinding head 1. After the angle of grinding head 1 is adjusted, press the adjustment knob 523 so that the third locking block 525 is inserted into the corresponding third locking slot 524, and the adjustment rod 522 is repositioned to prevent the grinding head 1 from deflecting during the grinding operation.

[0050] When it is necessary to adjust the length of the two drive lines 55 according to the length of the operating lever 2, firstly, pull the third locking block 525 out of the third locking slot 524 by adjusting the knob 523, rotate the adjusting knob 523 to drive the mounting bracket 51 back to the initial position, so that the second drive slot 513 corresponds to the position of the mounting box 56, and then press the adjusting knob 523 to re-limit the adjusting lever 522; Then, press the second drive wheel 518 to make the end of the second drive rod 514 enter the mounting box 56 and insert it into the fourth limiting groove 517. At this time, further pressing the second drive wheel 518 can press the second transmission component 57 into the third limiting groove 58 through the second drive rod 514 and compress the third elastic component 59. During the movement of the second transmission component 57, it will drive the second mounting plate 510 to move, so that the second slot 511 and the second block 512 are separated, releasing the limitation on the second transmission component 57, so that the second transmission component 57 can rotate normally. At this time, by rotating the second drive wheel 518 in the pressed state, the second drive rod 514 and the second transmission component 57 can drive the second rotating shaft 53 to rotate. When the second rotating shaft 53 rotates, it can drive the two second take-up rollers 54 to rotate synchronously. When the two second take-up rollers 54 rotate, they can wind and unwind the two drive lines 55, thereby adjusting the length of the drive lines 55.

[0051] When the operating lever 2 is extended, press the second drive wheel 518 and then pull the telescopic joint in the operating lever 2 to extend. During the extension process, the telescopic joint of the operating lever 2 will drive the two second take-up rollers 54 to unwind through the rotating sleeve 11 and the two drive lines 55.

[0052] When the operating lever 2 is shortened, the telescopic joint extending from the operating lever 2 is pressed back, so that the two drive lines 55 inside the operating lever 2 change from a tensioned state to a relaxed state. Then, the second drive wheel 518 in the pressed state is rotated, so that the two second take-up rollers 54 take up the two drive lines 55, thereby adjusting the length of the two drive lines 55 according to the length of the operating lever 2.

[0053] When the operating lever 2 extends to the required length, the pressure on the second drive wheel 518 is released, and the fourth elastic element 516 pushes back the second support plate 515, and drives the second drive rod 514 and the second drive wheel 518 back to the initial position, so that the second drive rod 514 is pulled out from the mounting box 56 and the end of the second drive rod 514 returns to the second drive groove 513, so as to avoid affecting the rotation of the subsequent mounting bracket 51. As the end of the second drive rod 514 returns to the inside of the second drive groove 513, the third elastic element 59 will push back the second transmission element 57, driving the second mounting plate 510 back to the initial position, so that the second locking block 512 can be inserted into the corresponding second locking groove 511 for limiting, preventing the second transmission element 57 from rotating, so that the second winding roller 54 cannot wind and unwind the drive line 55, avoiding affecting the rotation operation of the grinding head 1.

[0054] In summary, by setting the angle adjustment component 5, when adjusting the length of the operating lever 2, rotating the second drive wheel 518 in the pressed state can drive the second rotating shaft 53 to rotate via the second drive lever 514 and the second transmission component 57. When the second rotating shaft 53 rotates, it can drive the two second take-up rollers 54 to take up and unwind the two drive lines 55, adjusting the length of the drive lines 55. This can be coordinated with the extension and shortening of the operating lever 2 to adjust the length of the drive lines 55, thereby adapting to the length of the operating lever 2 to adjust the angle of the grinding head 1, improving surgical accuracy and reducing surgical difficulty.

[0055] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A telescopic orthopedic surgical angle-adjustable drill, comprising a grinding head, an operating rod, and a handle, characterized in that, The operating lever is telescopic, with a rotating sleeve hinged to its telescopic front end. The grinding head is rotatably connected inside the rotating sleeve. The operating lever contains a flexible drive wire for transmitting torque to the grinding head and two drive lines for pulling the rotating sleeve to rotate. The operating lever is composed of several nested telescopic sections and also includes: A telescopic adjustment assembly, wherein the telescopic adjustment assembly is capable of adjusting the length of the flexible drive wire according to the length of the operating lever; and An angle adjustment component is provided, which can synchronously adjust the lengths of the two drive lines according to the length of the operating lever to adjust the tilt angle of the grinding head.

2. The telescopic orthopedic surgical angle adjustable drill according to claim 1, characterized in that: The telescopic adjustment assembly includes a take-up bin rotatably connected to the handle, a first rotating shaft rotatably connected inside the take-up bin, a first take-up roller fixed on the first rotating shaft, one end of the flexible drive wire being drivenly connected to the grinding head, and the other end being wound around the first take-up roller, and a first transmission member being provided at one end of the take-up bin corresponding to the first rotating shaft, which can be operated to rotate or lock the first rotating shaft.

3. The telescopic orthopedic surgical angle adjustable drill according to claim 2, characterized in that: The first transmission component is slidably connected to the first limiting groove at the end of the first rotating shaft, and a first elastic component is provided between the first transmission component and the first limiting groove. A first mounting plate is fixed on the first transmission component, and a plurality of first slots are provided on the first mounting plate. The winding chamber is provided with a first locking block that cooperates with the first slots to achieve locking.

4. The telescopic orthopedic surgical angle adjustable drill according to claim 3, characterized in that: The handle is provided with a first drive groove, and a first drive rod is provided in the first drive groove. One end of the first drive rod can engage with the second limiting groove at the end of the first transmission member, and the other end is connected to a first drive wheel. The first drive rod is slidably connected to the first drive groove via a first support plate, and a second elastic element is provided between the first support plate and the first drive groove.

5. The telescopic orthopedic surgical angle adjustable drill according to claim 4, characterized in that: The angle adjustment assembly includes a mounting bracket rotatably connected to the handle, a second rotating shaft rotatably connected to the mounting bracket, two second take-up rollers fixed on the second rotating shaft, one end of each of the two drive lines being connected to both sides of the rotating sleeve, and the other end being wound around the two second take-up rollers respectively. The mounting bracket is provided with a second transmission element at one end corresponding to the second rotating shaft, which can be operated to rotate or lock the second rotating shaft.

6. The telescopic orthopedic surgical angle adjustable drill according to claim 5, characterized in that: The second transmission component is slidably connected to the third limiting groove at the end of the second rotating shaft, and a third elastic component is provided between the second transmission component and the third limiting groove; The second transmission component is fixed with a second mounting plate, the second mounting plate is provided with a plurality of second slots, and the mounting bracket is provided with a second locking block that cooperates with the second slots to achieve locking.

7. The telescopic orthopedic surgical angle adjustable drill according to claim 6, characterized in that: The handle is provided with a second drive groove, and a second drive rod is provided in the second drive groove. One end of the second drive rod can engage with the fourth limiting groove at the end of the second transmission component, and the other end is connected to a second drive wheel. The second drive rod is slidably connected to the second drive groove via the second support plate, and a fourth elastic element is provided between the second support plate and the second drive groove.

8. The telescopic orthopedic surgical angle adjustable drill according to claim 7, characterized in that: The mounting bracket is connected to a support shaft, and the handle is provided with a connecting groove, in which the support shaft is rotatably connected; The support shaft end is provided with a fifth limiting groove, and the communicating groove is provided with an adjusting rod that is slidably connected in the fifth limiting groove. The other end of the adjusting rod extends out of the handle and is connected to an adjusting knob. The adjustment knob engages with multiple third slots on the handle via a third locking block to enable rotation and locking of the mounting bracket.

9. The telescopic orthopedic surgical angle adjustable drill according to claim 8, characterized in that: The winding chamber is provided with a limiting tube at one end near the operating rod, the flexible drive wire passes through the limiting tube, and the operating rod is provided with a limiting clip inside to restrict the swing of the flexible drive wire; The operating lever is equipped with a limiting rod inside to restrict and guide the drive line.

10. The telescopic orthopedic surgical angle adjustable drill according to claim 9, characterized in that: The telescopic joints inside the operating lever are all tapered structures that are thinner at the front and thicker at the back.

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