A minimally invasive hallux valgus three-dimensional directional quantitative correction guiding device

Abstract

This invention belongs to the field of medical device technology. Addressing the problems of inconvenience and low osteotomy precision of current minimally invasive hallux valgus three-dimensional directional quantitative correction guiding devices, this invention provides a minimally invasive hallux valgus three-dimensional directional quantitative correction guiding device, including a fixation base, an internal bone-setting reference component, an incision opening component, and an osteotomy control mechanism. This invention uses the internal bone-setting reference component to fix the patient's foot, and the incision opening component to open the skin at the incision site. Then, during the osteotomy operation, the osteotomy control mechanism limits the cutting depth and direction of the metatarsals, improving osteotomy precision, preventing damage to nerve tissue, resulting in a smooth incision, and facilitating subsequent osteotomy. During the osteotomy process, the first metatarsal bone is aligned with the edge of the internal bone-setting reference component, thus ensuring the first metatarsal bone is precisely positioned in the corrected position. This avoids under-correction or over-correction while facilitating the removal of excess bone on the patient's second metatarsal bone. It is simple and convenient to use.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a minimally invasive hallux valgus three-dimensional directional quantitative correction guide device. Background Technology

[0002] Hallux valgus is a common foot deformity, and with increasing demands for foot health and aesthetics, the number of hallux valgus surgeries is rising year by year. While minimally invasive hallux valgus surgery offers advantages such as less trauma and faster recovery, it presents significant challenges in precise intraoperative positioning and manipulation. In minimally invasive hallux valgus surgery, surgeons primarily rely on X-ray fluoroscopy and personal experience to determine the hallux valgus angle and bone alignment, lacking precise auxiliary tools, leading to large measurement errors. Statistics show that the measurement error of the hallux valgus angle (HVA) in traditional surgery can reach 5° to 10°, affecting the accuracy of the surgical plan. Osteotomy is a crucial step in hallux valgus correction, but existing instruments struggle to achieve precise quantitative control of the osteotomy distance.

[0003] Patent CN118319456B discloses a minimally invasive hallux valgus three-dimensional directional quantitative correction guide device, including a handle, an arc-shaped sliding arm, a guide body, a traction hook, a triggering mechanism, a support operating part, an arc-shaped fixing arm, and a first traction pin. This device can perform operations such as medial displacement, subsidence, rotation, eversion / inversion, and compression of the metatarsal bones after surgical osteotomy to achieve hallux valgus correction surgery.

[0004] When using the above-mentioned technical solution, it is necessary to use a guiding pin to fix the first and second bone parts together. The first bone part in the above-mentioned technical solution is the shaft of the metatarsal bone, and the second bone part is the head of the metatarsal bone. Then, the metatarsal bone is moved inward, sunken, rotated, everted, and compressed. However, the setting of the arc-shaped fixing arm and handle will block the side of the metatarsal bone, which is not conducive to the removal of excess bone spurs and is inconvenient to use. Moreover, in actual osteotomy operations, if the metatarsal bone is overcut, it will damage nerve tissue. According to clinical statistics, about 20% of postoperative complications (such as nonunion and recurrence of deformity) are related to insufficient osteotomy precision, and the above-mentioned technical solution cannot solve this problem. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems of inconvenience and low osteotomy accuracy of existing minimally invasive hallux valgus three-dimensional directional quantitative correction guiding devices.

[0006] To achieve the above objectives, the technical approach adopted in this invention is as follows: A novel minimally invasive hallux valgus three-dimensional directional quantitative correction guide device is provided, comprising a fixation base, an osteopathic internal push reference component, an incision opening component, and an osteotomy control mechanism. This invention uses the osteopathic internal push reference component to fix the patient's foot, and the incision opening component to open the skin at the incision site. Then, during the osteotomy operation, the osteotomy control mechanism limits the cutting depth and direction of the metatarsals, improving osteotomy accuracy, preventing damage to nerve tissue, resulting in a smooth incision, and facilitating subsequent osteotomy. During the osteotomy process, the first metatarsal bone is aligned with the edge of the osteopathic internal push reference component, thus ensuring the first metatarsal bone is precisely positioned at the correction location. This avoids undercorrection or overcorrection while facilitating the removal of excess bone on the patient's second metatarsal bone. The device is simple and convenient to use.

[0007] Based on the above technical concept, the technical solution adopted by this invention is as follows: A minimally invasive three-dimensional directional and quantitative correction guide device for hallux valgus includes: The fixation base is equipped with a thumb sleeve for securing the patient's big toe; The orthopedic medial retraction reference component is connected to the fixation base; the orthopedic medial retraction reference component is used to provide a reference for the medial retraction angle of the metatarsals; The incision opening component is perpendicularly connected to the osteopathic internal push reference component; The osteotomy control mechanism is connected to the osteopathic internal push reference component and the incision opening component, respectively; the osteotomy control mechanism is used to limit the depth and direction of the osteotomy.

[0008] To limit the depth and direction of metatarsal cutting, avoid excessive or insufficient cutting depth, and prevent uneven cutting surfaces, in the above technical solution, preferably, the osteotomy control mechanism includes: Osteotomy guide plate, connected to the osteopathic internal push reference component; The osteotomy depth control component is connected to the osteopathic internal push reference component and the incision opening component, respectively.

[0009] To further limit the cutting depth, the osteotomy depth control component of the above technical solution includes: A telescopic rod is installed on the bottom surface of the cut-out support assembly, and a connecting plate is provided on the movable end of the telescopic rod; An infrared irradiator is connected to a cutout-opening assembly via a sliding sleeve. An infrared receiver is located at the top of the connection plate; The depth limiting component is slidably connected to the connecting plate.

[0010] To more accurately define the cutting depth and avoid cutting too deep or too shallow, the above technical solution is further limited to an angle of 63° between the infrared irradiator and the cutting opening component.

[0011] To enable real-time acquisition of the cutting depth data of the metatarsal bone, the above technical solution is further refined, and the depth limiting component includes: The depth limiting bracket is slidably connected to the connecting plate. The height adjustment rod is connected to the depth limit bracket; The limiting ring has an upward opening and is located at the top of the height adjustment rod.

[0012] To further limit the cutting direction, the above technical solution is further restricted by providing a "Z"-shaped guide opening on the osteotomy guide plate.

[0013] To facilitate the immobilization of the patient's foot, the above technical solution is further specified, and the orthopedic internal displacement reference component includes: The upper clamping plate is rotatably connected to the upper surface of the fixed base; The lower clamping plate is rotatably connected to the bottom surface of the fixed base; The rotating shaft is located on the bottom surface of the fixed base, and the upper end of the rotating shaft passes through the fixed base and is connected to the lower clamping plate.

[0014] To facilitate the measurement of the patient's hallux valgus angle, the above technical solution is further refined by providing a pointer on the rotating shaft and an angle measuring disc fitted on the rotating shaft, with the angle measuring disc connected to the bottom surface of the fixed base.

[0015] To facilitate opening the skin at the patient's incision site, the above technical solution is further specified, and the incision opening component includes: The upper support plate is connected to the upper clamping plate; The lower support plate is connected to the lower splint and the osteotomy control mechanism, respectively. Multiple plates are equally spaced on the upper and lower support plates; Two clips are respectively set on the upper clamping plate and the lower clamping plate, and each clip abuts against the corresponding clamping plate.

[0016] To improve patient comfort during surgery, the above technical solution is further refined by adding an upper airbag and a side airbag on the base body for securing the patient's feet. Beneficial effects

[0017] I. This invention utilizes a combined design of a thumb sleeve, an internal bone-setting reference component, an incision opening component, and an osteotomy control mechanism. The thumb sleeve fixes the patient's thumb phalanx, while the osteotomy control mechanism limits the cutting depth and direction of the metatarsals during osteotomy, improving accuracy, preventing nerve damage, and resulting in a smooth incision. After osteotomy, the internal bone-setting reference component can be rotated to provide a reference for the internal bone-setting angle during rotation of the first metatarsal, preventing under- or over-correction. Simultaneously, the internal bone-setting reference component guides surgical instruments, allowing them to remove excess bone on the second metatarsal along the surface of the incision opening component. The invention is simple and convenient to use. Second, the angle between the infrared irradiator and the lower support plate provided by this invention is 63°. Since the transverse cross-section of the metatarsal is close to a circle, when the infrared irradiator moves with the lower support plate until the infrared receiver receives the infrared signal sent by the infrared transmitter, the transverse distance between the infrared receiver and the infrared generator is twice the longitudinal distance between them. At this time, the connecting plate is located at the end of the patient's metatarsal away from the lower support plate, that is, the end of the patient's metatarsal away from the osteotomy guide plate. This allows the cutting depth of the surgical cutting instrument to be limited, and the position of the connecting plate can be adjusted according to the metatarsal diameter of different patients to suit different patients.

[0018] Third, the osteotomy guide plate provided by this invention has a "Z"-shaped guide opening, so that surgical instruments can cut the metatarsal bone along the side of the "Z"-shaped guide opening, resulting in a smooth incision. In actual use, the guide opening of the osteotomy guide plate can also be other shapes.

[0019] Fourth, the present invention, through the combined design of the lower splint, rotating shaft and angle measuring disc, can not only measure the angle of hallux valgus of the patient, but also rotate the first metatarsal bone until it is parallel to the edge of the lower splint during the bone setting process, so as to avoid undercorrection or overcorrection. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of a minimally invasive hallux valgus three-dimensional directional quantitative correction guide device provided in an embodiment of the present invention; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 A schematic diagram of the device from another perspective; Figure 4 for Figure 3 Enlarged view of point B in the middle; Figure 5 for Figure 1 A schematic diagram of the device from another perspective; Figure 6 for Figure 5 Enlarged view of point C in the middle; Figure 7 for Figure 1 The diagram shows the state of the device measuring the hallux valgus angle. Figure 8 for Figure 7 Enlarged view of point D in the middle; Figure 9 for Figure 1 The diagram shows the initial state of the device opening the surgical incision.

[0022] Figure 10 for Figure 9 A schematic diagram of the device from another perspective; Figure 11 for Figure 1 The diagram shows the state of the device during osteotomy. Figure 12 for Figure 11 A schematic diagram of the device from another perspective; Figure 13 for Figure 12 Right view of the device shown; Figure 14 for Figure 13 Enlarged view at point E in the middle; Figure 15 for Figure 1 The diagram shows the state of the device during bone-setting and internal pushing. Figure 16 for Figure 15 Enlarged view at point F; Figure 17 for Figure 15 A schematic diagram of the device from another perspective.

[0023] Among them, 1. Fixing base; 11. Fixing base body; 12. Connecting plate; 13. Thumb sleeve; 14. Upper airbag cushion; 15. Side airbag cushion; 2. Orthopedic internal pushing reference component; 21. Upper splint; 22. Lower splint; 23. Rotation axis; 23a. Pointer; 24. Angle measuring disc; 25. Fixing pin; 3. Cut-out support assembly; 31. Upper support plate; 32. Lower support plate; 33. Clamping plate; 34. Clamping component; 4. Osteotomy control mechanism; 41. Osteotomy guide plate; 42. Telescopic rod; 43. Infrared irradiator; 44. Infrared receiver; 45. Connecting plate; 46. Sliding sleeve; 47. Depth limiting component; 47a. Depth limiting frame; 47b. Height adjusting rod; 47c. Limiting ring; 5. Foot model; 51. First metatarsal bone. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0025] In the description of this invention, it should be understood that the terms "length direction," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The inventors discovered that the current minimally invasive hallux valgus three-dimensional directional quantitative correction guide device has low osteotomy precision and may damage nerve tissue if the metatarsal bones are excessively cut.

[0028] Based on the above findings, this application proposes a minimally invasive hallux valgus three-dimensional directional quantitative correction guide device. This device includes a fixation base 1, an osteopathic internal push reference component 2, an incision opening component 3, and an osteotomy control mechanism 4. The application achieves better overall correction through the following design: 1. The orthopedic internal pushing reference component 2 not only fixes the patient's foot to facilitate subsequent minimally invasive hallux valgus surgery, but also rotates during osteotomy to make the side of the orthopedic internal pushing reference component 2 parallel to the metatarsal bone for osteotomy. After osteotomy, the orthopedic internal pushing reference component 2 can be rotated again to make the edge of the lower splint 22 of the orthopedic internal pushing reference component 2 flush with the edge of the fixation seat 1. This provides a reference for the rotation angle of the first metatarsal 51 when pushing the first metatarsal 51 inward, ensuring that the first metatarsal 51 and the side of the orthopedic internal pushing reference component 2 are parallel to each other, avoiding undercorrection or overcorrection. Furthermore, the orthopedic internal pushing reference component 2 can also be used to measure the patient's hallux valgus angle and metatarsal varus angle before surgery. 2. The incision opening component 3 can not only open the skin at the surgical incision site, but also combine with the osteotomy control mechanism 4 to limit the depth of the surgical cutting instrument cutting the metatarsal bone, preventing over-cutting or insufficient cutting depth. 3. The osteotomy control mechanism 4 can not only limit the depth of the surgical cutting instrument cutting the metatarsal bone, but also guide the cutting direction to make the cut surface flat, thereby improving the overall osteotomy accuracy, preventing damage to nerve tissue, making the incision flat, and facilitating subsequent bone setting.

[0029] Example 1 This embodiment provides a minimally invasive three-dimensional directional and quantitative correction guide device for hallux valgus, such as... Figure 1-17 As shown, it includes a fixation base 1, an internal bone-setting reference component 2, an incision opening component 3, and an osteotomy control mechanism 4.

[0030] like Figure 1 As shown, the fixing seat 1 includes a fixing seat body 11, a connecting plate 12, a thumb sleeve 13, an upper airbag cushion 14, and a side airbag cushion 15.

[0031] The fixation body 11 has a T-shaped structure and is provided with a cavity for accommodating the patient's foot. A connecting plate 12 is rotatably connected to the upper end of the cavity of the fixation body 11. The fixation body 11 is provided with a threaded hole so that it can be fixed to the side of the operating table during actual use for minimally invasive hallux valgus surgery. The connecting plate 12 is used to rotatably connect with the orthopedic internal push reference component 2, and the end of the connecting plate 12 away from the fixation body 11 is provided with a first clearance groove so that the orthopedic internal push reference component 2 can rotate. It should be noted that the rotatable connection method between the connecting plate 12 and the fixation body 11 is the prior art, and the present invention does not improve it. For example, the connecting plate 12 is rotatably connected to the fixation body 11 through a rotating shaft.

[0032] The thumb sleeve 13 is a ring-shaped structure with an opening at the top, and the thumb sleeve 13 is fixedly connected to the connecting rod fixedly mounted on the fixing base body 11. In actual use, the patient's big toe is inserted through the opening of the thumb sleeve 13, thereby fixing the patient's big toe in the thumb sleeve 13. The thumb sleeve 13 is made of an elastic material. This embodiment of the invention does not limit the material of the thumb sleeve 13. For example, the elastic material is silicone, rubber, or elastic plastic. It should be noted that this embodiment of the invention does not limit the fixing connection method between the thumb sleeve 13 and the connecting rod. For example, the fixing connection method is a snap-fit ​​connection or adhesive.

[0033] In practical applications, the position of the thumb sleeve 13 can be determined according to the correction position of each patient's thumb, and then the patient's thumb can be put into the thumb sleeve 13 for fixation, so that the metatarsal bone can be rotated and pushed inward during subsequent surgery for correction.

[0034] The upper airbag 14 is fixedly installed on the side of the connecting plate 12 that contacts the patient's foot. The upper airbag 14 is used to prevent the connecting plate 12 from excessively squeezing the patient's foot and improve the patient's comfort during use. When in use, the upper airbag 14 is inflated so that the upper airbag 14 expands to fix the upper part of the patient's foot. The side airbag 15 is located within the receiving cavity of the fixation base body 11, so that during use, the side airbag 15 can be inflated to move the patient's foot towards the side where the orthopedic internal pushing reference component 2 is located, until the side of the patient's foot is fixed, so that subsequent surgery can proceed smoothly. In practical applications, an external inflation device can be used to inflate the upper airbag 14 and the side airbag 15 separately. It should be noted that the external inflation device provided in this embodiment of the invention is prior art, and this embodiment of the invention does not improve upon it.

[0035] The working principle of the fixation seat 1 provided in this embodiment of the invention is as follows: First, the fixing pin 25 is removed and the connecting plate 12 is flipped upward so that the patient's foot can be placed in the receiving cavity of the fixation seat body 11; then, the connecting plate 12 is flipped downward so that it can be connected and fixed to the upper clamp 21 and the lower clamp 22 by the fixing pin 25; finally, the upper airbag 14 and the side airbag 15 are inflated respectively so that while the patient's big toe is in the big toe sleeve 13, the patient's metatarsal bone is located at the edge of the orthopedic internal push reference component 2 so as to measure the hallux valgus angle or perform surgery.

[0036] The orthopedic internal pushing reference component 2 includes an upper splint 21, a lower splint 22, a rotating shaft 23, and an angle measuring disc 24; both the upper splint 21 and the lower splint 22 are square sheet structures; Specifically, the upper clamping plate 21 is located in the first clearance groove of the connecting plate 12, and the upper clamping plate 21 is rotatably connected to the connecting plate 12; The lower clamping plate 22 is rotatably connected to the bottom surface of the fixed base body 11; specifically, the fixed base body 11 is provided with a second clearance groove to facilitate the rotation of the lower clamping plate 22, and the lower clamping plate 22 is located in the second clearance groove. In actual use, the lower splint 22 is fixedly connected to the upper splint 21 by the fixing pin 25 so as to fix the upper and lower sides of the patient's foot, and the upper splint 21 drives the lower splint 22 to rotate synchronously by the fixing pin 25; wherein, the fixing pin 25 is detachably connected to the upper splint 21 and the lower splint 22 respectively so as to allow the patient to put on and take off the splint. The rotating shaft 23 includes a rotating shaft body and a pointer 23a disposed at the lower end of the rotating shaft body; specifically, one end of the rotating shaft body is fixedly connected to the pointer, and the other end passes through the second clearance groove of the fixed base body 11 and is fixedly connected to the lower clamping plate 22; in this way, when the lower clamping plate 22 rotates, the rotating shaft 23 rotates together with the lower clamping plate 22.

[0037] The angle measuring disc 24 has a circular structure. It is fixedly mounted on the bottom surface of the fixing base body 11 and sleeved with the rotating shaft body, so that the pointer 32a is positioned above the angle measuring disc 24. In the initial state, when the edge of the lower clamp 22 is parallel to the edge of the fixing base body 11, the pointer 23a points vertically downwards and is on the same straight line as the angle measuring disc 24. In actual use, rotating the upper clamp 21 causes the lower clamp to rotate synchronously via the fixing pin 25. At this time, the angle pointed to by the pointer 23a is the patient's hallux valgus angle.

[0038] In actual use, the upper splint 21 can be rotated so that the side of the upper splint 21 is parallel to the patient's finger bones. At this time, the angle pointed to by the pointer 23a is the hallux valgus angle.

[0039] The cut-out spreading assembly 3 includes an upper support plate 31, a lower support plate 32, multiple clamping plates 33, and two clamping pieces 34; wherein, the upper support plate 31 and the lower support plate 32 have the same structure, both being L-shaped structures; Specifically, the upper support plate 31 and the upper clamping plate 21 are arranged perpendicularly to each other, and the upper support plate 31 and the upper clamping plate 21 are slidably connected. The lower support plate 32 and the lower clamping plate 22 are arranged perpendicularly to each other, and the lower support plate 32 and the lower clamping plate 22 are slidably connected. Each card plate 33 is a triangular structure, and multiple card plates 33 are provided at equal intervals on the upper support plate 31 and the lower support plate 32 respectively; Two clamping pieces 34 are respectively disposed on the upper clamping plate 21 and the lower clamping plate 22, and each clamping piece 34 is rotatably connected to the corresponding clamping plate through a torsion spring.

[0040] In actual use, medical staff can use their hands to push the clips 34 outwards to adjust the height of the upper support plate 31 and the lower support plate 32. The lower end of the upper support plate 31 and the top end of the lower support plate 32 are respectively located at the center height of the patient's big toe, thereby releasing the two clips 34. After the two clips 34 return to their natural state, they abut against the clips 33 on the upper support plate 31 and the lower support plate 32, respectively, thereby fixing the upper support plate 31 and the lower support plate 32 to stretch the skin on both sides of the patient's surgical incision.

[0041] The osteotomy control mechanism 4 includes an osteotomy guide plate 41 and an osteotomy depth control assembly; An osteotomy guide plate 41 is disposed between the upper clamping plate 21 and the lower clamping plate 22, and is slidably connected to the fixation base body 11. The osteotomy guide plate 41 has a guide opening at one end between the upper clamping plate 21 and the lower clamping plate 22, which guides the cutting direction of the surgical cutting instrument. Preferably, the osteotomy guide plate 41 has a "Z"-shaped guide opening.

[0042] Among them, the osteotomy guide plate 41 is a sheet structure, and the osteotomy guide plate 41 is provided with multiple connection holes. In actual use, the bolt passes through the connection holes of the fixing base body 11 and the osteotomy guide plate 41 to realize the fixed connection between the fixing base body 11 and the osteotomy guide plate 41.

[0043] The osteotomy depth control assembly includes a telescopic rod 42, an infrared irradiator 43, an infrared receiver 44, a connecting plate 45, a sliding sleeve 46, and a depth limiting component 47.

[0044] The telescopic rod 42 is fixedly mounted on the bottom surface of the lower clamping plate 23, and the movable end of the telescopic rod 42 is fixedly connected to the connecting plate 45. It should be noted that the telescopic rod 42 provided in this embodiment of the invention is prior art. This embodiment of the invention does not improve the telescopic rod 42. Preferably, the telescopic rod 42 is an electric push rod.

[0045] The connecting plate 45 is vertically positioned, and its upper end is fixedly connected to the upper end of the telescopic rod 42.

[0046] The depth limiting component 47 includes a depth limiting frame 47a, a height adjusting rod 47b, and a limiting ring 47c.

[0047] Specifically, the depth limiting frame 47a includes a square frame and an L-shaped rod fixedly connected to the square frame; the square frame of the depth limiting frame 47a is inserted into the connecting plate 45, one end of the L-shaped rod is fixedly connected to the square frame of the depth limiting frame 47a, and the other end is located on the side of the cut-out support assembly 3 away from the fixed seat 1. The L-shaped rod has an adjustment groove at one end away from the square frame, and the adjustment groove of the L-shaped rod has multiple connecting holes for fixed connection with the height adjustment rod 47b. The height adjustment rod 47b has a straight rod structure and is equipped with a spring button. In use, the height adjustment rod 47b can be inserted into the adjustment groove of the L-shaped rod. When the spring button and the connecting hole are on the same straight line, the spring button is in the natural state and enters the connecting hole, thereby realizing the fixed connection between the height adjustment rod 47b and the L-shaped rod. The limiting ring 47c is a circular ring with an upward opening, and the limiting ring 47c is made of an elastic material. It should be noted that the embodiment of the present invention does not limit the elastic material of the limiting ring 47c. For example, the elastic material is silicone or rubber. In use, the handle of the surgical cutting instrument can be inserted into the opening of the limiting ring 47c to fix the surgical cutting instrument within the limiting ring 47c. This fixes the surgical cutting instrument in place, and as the surgical cutting instrument cuts into the metatarsal bone, the depth limiting frame 47a can move along with the surgical cutting instrument. When the inner surface of the square frame of the depth limiting frame 47a contacts the connecting plate 45, the surgical cutting instrument cannot continue to cut into the metatarsal bone under the action of the depth limiting frame 47a. This limits the depth of the surgical instrument's cutting into the metatarsal bone, preventing the cutting depth from being too deep or too shallow.

[0048] The sliding sleeve 46 is fitted onto the lower support plate 32, and the material of the sliding sleeve 46 is a material with high friction, for example, silicone or rubber. In use, the sliding sleeve 46 is fixed to the lower support plate 32 by its own friction.

[0049] The infrared irradiator 43 is fixedly mounted on the sliding sleeve 46, and the angle between the infrared irradiator 43 and the lower support plate 32 is 63°. The infrared receiver 44 is fixedly mounted on the upper end of the connecting plate 45.

[0050] Initially, the upper end of the lower support plate 32 is located at the center height between the upper clamp 21 and the lower clamp 22. At this time, the infrared irradiator 43 and the infrared receiver 44 are on the same horizontal line. As the lower support plate 32 stretches the skin at the patient's incision, the lower support plate 32 moves downward. Then the telescopic rod 42 is opened, and the movable end of the telescopic rod 42 extends, thereby driving the connecting plate 45 to move towards the end closer to the lower support plate 32 until the infrared receiver 44 receives the infrared signal emitted by the infrared irradiator 43. The telescopic rod 42 closes, and the connecting plate 45 no longer moves. At this time, the lateral distance between the infrared irradiator 43 and the infrared receiver 44 is twice the longitudinal distance between the infrared irradiator 43 and the infrared receiver 44. Since the cross-sectional shape of the metatarsal is approximately circular, and the upper end of the lower support plate 32 is located at the center height between the upper splint 21 and the lower splint 22, that is, the upper end of the lower support plate 32 is located at the middle position of the metatarsal of the affected limb, the distance that the lower support plate 32 moves downward is the radius length of the patient's metatarsal. Since the distance that the lower support plate 32 moves downward is the same as the distance that the infrared generator 43 moves downward, the distance that the infrared generator 43 moves downward is the radius length of the patient's metatarsal. As the infrared receiver 44 moves with the telescopic rod 42 until it receives the infrared signal emitted by the infrared irradiator 43, the lateral distance between the infrared irradiator 43 and the infrared receiver 44 is twice the longitudinal distance between them. At this point, the infrared receiver 44 is located on the side of the affected metatarsal bone away from the limiting ring 47c and tangent to the edge of the metatarsal bone. Thus, after the surgical instruments are fixed to the limiting ring 47c, during the process of the surgical cutting instrument cutting into the metatarsal bone... The depth limiting frame 47a moves together with the surgical cutting instrument. When the depth limiting frame 47a contacts the connecting plate 45, the surgical cutting instrument cannot cut into the metatarsal bone under the action of the depth limiting frame 47a, thereby limiting the cutting depth. In addition, since the depth limiting frame 47a moves together with the surgical cutting instrument, the cutting depth of the metatarsal bone during the osteotomy can be recorded in real time. After osteotomy, the metatarsal bone is divided into the first metatarsal bone 51 and the second metatarsal bone, wherein the first metatarsal bone includes the distal part of the metatarsal bone.

[0051] Application examples: S1: Secure the patient's foot in the fixation base 11; specifically, this includes the following steps: S101: Remove the fixing pin 25 and flip the connecting plate 12 upwards; S102: Flip the connecting plate 12 downwards, and then connect and fix it to the upper clamping plate 21 and the lower clamping plate 22 by the fixing pin 25; S103: Inflate the upper airbag 14 and the side airbag 15 respectively to compress and fix the patient's foot and instep. At the same time, the patient's big toe is located inside the big toe sleeve 13, and after the patient's big toe passes through the upper splint 21 and the lower splint 22, the big toe is located outside the upper splint 21 and the lower splint 22, which not only fixes the patient's foot, but also facilitates subsequent surgery. S2: Disinfect the surgical site, make an incision in the skin between the middle toe and the metatarsal edge of the everted foot, and then... Figure 10As shown, medical staff can use their hands to push the clips 34 outwards to adjust the height of the upper support plate 31 and the lower support plate 32. The lower end of the upper support plate 31 and the top end of the lower support plate 32 are respectively located at the center height of the patient's big toe, thereby releasing the two clips 34. After the two clips 34 return to their natural state, they abut against the clips 33 on the upper support plate 31 and the lower support plate 32, respectively, thereby fixing the upper support plate 31 and the lower support plate 32, so as to stretch the skin on both sides of the patient's surgical incision vertically and vertically to expose the surgical field. S3: Rotate the upper splint 21. The upper splint 21 drives the lower splint to rotate synchronously through the fixing pin 25, so that the side of the lower splint 22 is parallel to the patient's metatarsal bones. S4: Depending on the angle of the patient's hallux valgus, a portion of the metatarsal bone at the distal end can be removed longitudinally to facilitate subsequent transverse "Z" osteotomy; if it facilitates subsequent transverse "Z" osteotomy, this step can be ignored. S5: Transverse "Z"-shaped osteotomy; specifically, such as... Figure 12 As shown, it includes the following steps: S501: Determine the cutting position; Specifically, the osteotomy guide plate 41 is inserted into the side of the fixing base 1, then the position of the osteotomy guide plate 41 is adjusted, and finally the osteotomy guide plate 41 is fixed with bolts. S502: Open the telescopic rod 42, the movable end of the telescopic rod 42 extends, thereby driving the connecting plate 45 to move towards the end closer to the lower support plate 32 until the infrared receiver 44 receives the infrared signal emitted by the infrared irradiator 43, the telescopic rod 42 closes, and the connecting plate 45 no longer moves; at this time, the infrared receiver 44 is located on the side of the affected metatarsal bone away from the limiting ring 47c, and is tangent to the edge of the metatarsal bone; S503: The handle of the surgical cutting instrument is inserted through the opening of the limiting ring 47c to fix the surgical cutting instrument within the limiting ring 47c; S504: The surgical cutting instrument cuts into the metatarsal bone, and the surgical cutting instrument cuts the metatarsal bone along the side of the "Z"-shaped guide opening of the osteotomy guide plate 41, so that the metatarsal bone is divided into the first metatarsal bone 51 and the second metatarsal bone; wherein, the first metatarsal bone 51 includes the distal part of the metatarsal bone. At this point, the depth limiting frame 47a moves along with the surgical cutting instrument. When the depth limiting frame 47a contacts the connecting plate 45, the surgical cutting instrument cannot cut into the metatarsal bone under the action of the depth limiting frame 47a, thus limiting the cutting depth and preventing over-cutting or insufficient cutting depth. This ensures sufficient cutting depth while avoiding damage to the patient's nerve tissue. Because the depth limiting frame 47a moves along with the surgical cutting instrument, the cutting depth of the metatarsal bone during the osteotomy can be recorded in real time. S6: Bone setting and fixation; specifically, such as... Figure 15 As shown, it includes the following steps: S601: Rotate the upper clamp 21. The upper clamp 21 drives the lower clamp to rotate synchronously through the fixing pin 25, so that the side of the lower clamp 22 is parallel to the edge of the fixing seat body 11. At this time, the end of the second metatarsal bone passes through the space between the upper clamp 21 and the lower clamp 22 and is located on the outside of the orthopedic internal push reference component 2. S602: Using surgical instruments, rotate the first metatarsal bone inward with the thumb sleeve 13 as the center, so that the first metatarsal bone and the edge of the fixation body 11 are parallel to each other, to prevent undercorrection or overcorrection. S603: Insert screws to fix the metatarsals; S604: Remove excess bone from the second metatarsal bone that passes through the upper splint 21 and the lower splint 22; S7: Suture the surgical incision.

[0052] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A minimally invasive three-dimensional directional and quantitative correction guide device for hallux valgus, characterized in that, include: The fixing seat (1) is provided with a thumb sleeve (13) for fixing the patient's big toe; The orthopedic internal pushing reference component (2) is connected to the fixation base (1) and is used to provide a reference for the metatarsal internal pushing angle; The incision opening component (3) is vertically connected to the osteopathic internal push reference component (2); The osteotomy control mechanism (4) is connected to the osteopathic internal push reference component (2) and the incision opening component (3) respectively, and is used to limit the depth and direction of the osteotomy.

2. The minimally invasive hallux valgus three-dimensional directional quantitative correction guide device according to claim 1, characterized in that, The osteotomy control mechanism (4) includes: The osteotomy guide plate (41) is connected to the osteopathic internal push reference component (2); The osteotomy depth control component is connected to the osteopathic internal push reference component (2) and the incision opening component (3), respectively.

3. The minimally invasive hallux valgus three-dimensional directional quantitative correction guide device according to claim 2, characterized in that, The osteotomy depth control component includes: Telescopic rod (42) is provided on the bottom surface of the cut-out support assembly (3), and a connecting plate (45) is provided on the movable end of the telescopic rod (42). The infrared irradiator (43) is connected to the cut-out assembly (3) via a sliding sleeve (46); An infrared receiver (44) is located at the top of the connecting plate (45); The depth limiting member (47) is slidably connected to the connecting plate (45).

4. The minimally invasive hallux valgus three-dimensional directional quantitative correction guide device according to claim 3, characterized in that, The angle between the infrared irradiator (44) and the cut-out assembly (3) is 63°.

5. The minimally invasive hallux valgus three-dimensional directional quantitative correction guide device according to claim 3, characterized in that, The depth limiting component (47) includes: The depth limiting bracket (47a) is slidably connected to the connecting plate (45); The height adjustment rod (47b) is connected to the depth limiting bracket (47a); The limiting ring (47c) has an upward opening and is located at the top of the height adjusting rod (47b).

6. The minimally invasive hallux valgus three-dimensional directional quantitative correction guide device according to claim 2, characterized in that, The osteotomy guide plate (41) is provided with a "Z"-shaped guide opening.

7. The minimally invasive hallux valgus three-dimensional directional quantitative correction guide device according to claim 1, characterized in that, The orthopedic internal adjustment reference component (2) includes: The upper clamp (21) is rotatably connected to the upper surface of the fixed seat (1); The lower clamping plate (22) is rotatably connected to the bottom surface of the fixed base (1); The rotating shaft (23) is set on the bottom surface of the fixed seat (1), and the upper end of the rotating shaft (23) passes through the fixed seat (1) and is connected to the lower clamping plate (22).

8. The minimally invasive hallux valgus three-dimensional directional quantitative correction guide device according to claim 7, characterized in that, A pointer (23a) is provided on the rotating shaft (23), and an angle measuring disk (24) is fitted on the rotating shaft (23). The angle measuring disk (24) is connected to the bottom surface of the fixed base (1).

9. A minimally invasive three-dimensional directional quantitative correction and guiding device for hallux valgus according to claim 7, characterized in that, The cut-opening component (3) includes: The upper support plate (31) is connected to the upper clamping plate (21); The lower support plate (32) is connected to the lower clamping plate (22) and the osteotomy control mechanism (4) respectively; Multiple plates (33) are equally spaced on the upper support plate (31) and the lower support plate (32); Two clips (34) are respectively set on the upper clamping plate (21) and the lower clamping plate (22), and each clip (34) abuts against the corresponding clamping plate (33).

10. A minimally invasive hallux valgus three-dimensional directional quantitative correction guide device according to claim 9, characterized in that, The fixation seat (1) is also equipped with an upper airbag (14) and a side airbag (15) for fixing the patient's feet.

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