An adjustable osteotomy guide for navigation

Abstract

The present invention discloses a navigation adjustable osteotomy guide, which relates to the field of osteotomy technology, and includes a guide body, a guide groove, a reference rod and a probe. The guide body is provided with a guide groove, the guide body and the reference rod are provided with nail holes, the guide body is provided with a plurality of interface grooves, the front end of the guide body is provided with an adjustment component, the upper part of the adjustment component is provided with a reference rod, the interface groove is provided with a connection component, one side of the connection component is provided with a simulation component, and the simulation component is installed with a probe. The present invention changes the inclination angle of the osteotomy plane through the adjustment component, and changes the depth of the osteotomy in cooperation with the telescopic component. Secondly, the connection component quickly installs and disassembles the auxiliary structure and the guide body. The simulation component is used to simulate the cutting thickness and cutting inclination angle of the oscillating saw, and the simulation component has multiple operation modes.

Description

Technical Field

[0001] The invention relates to the technical field of osteotomy, in particular to an adjustable osteotomy guide for navigation. Background Art

[0002] When the knee is in varus, stress is concentrated on the medial part of the knee, and the degenerative changes occurring on the medial part of the knee are accelerated. On the contrary, if the knee deformity is valgus, these changes occur on the lateral part of the knee, and knee joint lesions and the production of hyperplastic tissue or other causes require osteotomy of the knee. The main purpose of osteotomy is to improve knee function by correcting the knee axis and increasing joint stability.

[0003] Prior to the conventional osteotomy surgery, the bone reference needs to be positioned, and the conventional osteotomy surgery causes great damage to the bone marrow during the positioning period. During the positioning of the bone reference, the operator's observation field of view is affected by the large number of external structures, and the auxiliary structure is inconvenient to install and disassemble, resulting in a long time required for the installation and disassembly of the auxiliary structure, which increases the difficulty of the osteotomy work. Secondly, some osteotomy guides do not have an osteotomy simulation structure, resulting in the osteotomy angle and depth relying on the operator's experience. Summary of the invention

[0004] The object of the present invention is to provide an adjustable osteotomy guide for navigation to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a navigation adjustable osteotomy guide, comprising a guide body, a guide groove, a reference rod and a probe, the guide body is provided with a guide groove, the guide body and the reference rod are provided with nail holes, the guide body is provided with a plurality of interface grooves, the front end of the guide body is provided with an adjustment component, the upper part of the adjustment component is provided with a reference rod, the adjustment component is used to change the deflection angle between the guide body and the reference rod, the interface groove is provided with a connecting component, one side of the connecting component is provided with a simulation component, the connecting component is used to connect the guide body to an auxiliary structure, the simulation component is installed with a probe, and the simulation component is used to determine the osteotomy plane.

[0006] Furthermore, the adjustment assembly includes a positioning plate installed on the outside of the guide body, a through hole is opened inside the positioning plate, the inner wall of the through hole matches the outer wall of the connecting assembly, the positioning plate is connected to the guide body through the connecting assembly, a plurality of universal shafts are arranged at the front end of the positioning plate, a fixing plate is arranged at the front end of the universal shaft, an annular tooth groove is arranged on the inner wall of the fixing plate, a circular plate is arranged inside the fixing plate, a plurality of knobs are arranged inside the circular plate, the knobs are vertically arranged, a threaded groove is arranged on the outer wall of the upper knob, the upper knob and the circular plate are threadedly connected, a tooth block is arranged on the outer wall of the lower knob, the lower knob and the fixing plate are meshed and connected, and an extension The telescopic component is used to connect the fixed plate and the reference rod, and the telescopic component is used to change the straight-line distance between the fixed plate and the reference rod. The knob and the positioning plate are connected by a universal shaft, and the upper knob and the circular plate are threadedly connected. The upper knob can be rotated to realize the horizontal longitudinal displacement of the upper knob relative to the circular plate. Due to the limitation of the lower universal shaft, the upper knob drives the positioning plate to deflect with the lower universal shaft as the center of the circle. The fixed plate and the lower knob are meshed and connected. The outer wall of the knob is provided with a tooth block, and the circular through hole of the fixed plate is provided with a tooth groove. The circular through hole of the fixed plate matches the circular plate. The circular plate can be rotated to realize the deflection of the circular plate relative to the fixed plate with its own center of circle. The positioning plate and the circular plate are deflected synchronously, and the positioning plate is fixedly connected to the guide body.

[0007] Furthermore, the telescopic assembly includes a sleeve on one side of the fixed plate, a square rod is arranged inside the sleeve, a threaded rod is arranged on the outer wall of the square rod, a threaded sleeve is arranged on the outer wall of the threaded rod, a connecting plate is arranged on the upper end of the threaded rod, the connecting plate is slidably connected to the reference rod, a groove matching the square rod is arranged inside the threaded rod, the square rod and the threaded rod are sleeved so that the threaded rod can only be vertically lifted and lowered along the square rod, and the square rod and the threaded rod cannot deflect relative to each other, thereby preventing the adjustment assembly from deflecting relative to the guide body during the rotation of the threaded sleeve.

[0008] Furthermore, the connecting component includes a limiting sleeve installed inside the positioning plate, one end of the limiting sleeve is located inside the interface groove, a pull plate is provided on one side of the limiting sleeve, a slide plate is provided on one side of the pull plate, the slide plate and the limiting sleeve are connected by a spring, the slide plate passes through one side surface of the limiting sleeve, a plurality of connecting rods are provided at one end of the slide plate, the connecting rods are connected to the limiting sleeve through a rotating shaft, a clamping plate is provided at one end of the connecting rod, the clamping plates are connected by a limiting rod, one side of the clamping plate passes through the limiting sleeve, the separation movement direction of the connecting component relative to the interface groove is the same as the movement direction of the pull plate during installation and disassembly, the clamping plate and the interface groove are engaged with each other to achieve the fixation between the connecting component and the guide body, and the connecting component can realize the quick installation and disassembly of the required auxiliary structure.

[0009] Furthermore, the simulation component includes a side plate installed on the outside of the guide body, the inner wall of the side plate is provided with a through hole, the side plate is connected to the guide body through a connecting component, a ruler plate is provided at the upper end of the side plate, a fork arm is provided on one side of the ruler plate, a sliding rod is provided above the fork arm, a splint is provided on the outer wall of the sliding rod, the splints are symmetrically arranged front and back about the sliding rod, the splint is connected to the ruler plate through the fork arm, a longitudinal rod is provided between the splints, the splint and the longitudinal rod are slidingly connected, a probe is provided on one side of the splint, the ruler plate and the side plate are movably connected, the ruler plate is rotated, and the probe rotates synchronously with the ruler plate as the center of the circle, the probe rotation process simulates the osteotomy process, and the probe is driven to move vertically and horizontally by the threaded nail cap without direct contact with the probe.

[0010] Furthermore, the knob is connected to the positioning plate through a universal shaft, the fixed plate is deflected with the positioning plate through the upper knob, and the fixed plate is deflected with the positioning plate through the lower knob. The upper knob is rotated, and a longitudinal displacement occurs between the knob and the circular plate, so that the positioning plate is deflected with the lower universal shaft as the center, and the upper part of the positioning plate is deflected back and forth. The lower knob is rotated, and the tooth block on the outer wall of the lower knob is meshed with the tooth groove inside the fixed plate, driving the positioning plate to rotate with the circular plate as the center.

[0011] Furthermore, a groove is provided inside the interface groove, and the inner wall of the groove matches the outer wall of the card plate. The rotating shaft is located on the side of the connecting rod close to the slide, and the slide and the connecting rod are slidingly connected. The connecting assembly is fixed to the guide body through the card plate and the groove. When the pull plate is pulled, one end of the connecting rod slides inside the connecting rod under the action of the tension, so that the connecting rod is deflected with the rotating shaft as the center. Since the distance between the rotating shaft and the card plate is longer than that between the rotating shaft and the card plate, a larger displacement of the card plate can be achieved by moving the pull plate a small distance.

[0012] Furthermore, the outer walls of the ruler plate and the slide rod are provided with scale grooves, and the clamp plate is connected to the fork arm by a threaded nail, and the relative positions among the clamp plate, the fork arm and the slide rod are changed by driving the threaded nail nut, wherein the slide rod slides up and down along the outer wall of the ruler plate, and the clamp plate slides horizontally along the outer wall of the slide rod, the position among the clamp plate, the fork arm and the slide rod changes, and the scales displayed on the ruler plate and the slide rod change synchronously, the value represented by the scale line on the ruler plate close to the slide rod side is the height value of the probe, and the value represented by the scale line on the slide rod close to the clamp plate side is the depth value of the probe, wherein the clamp plates are located on both sides of the slide rod, and threaded nails are installed in the clamp plates on both sides, the threaded nails on one side are used to fix the clamp plate and the slide rod, and the threaded nails on one side are used to fix the clamp plate and the fork arm.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0014] 1. The navigation adjustable osteotomy guide, through the setting of the adjustment component, rotates the upper knob to change the thickness difference between the front end and the rear end of the upper surface of the redundant bone after being cut, rotates the lower knob to change the thickness difference between the left and right sides of the upper surface of the redundant bone after being cut, cooperates with the telescopic component, and then changes the thickness of the redundant bone after being cut. After the adjustment is completed, the guide body is positioned for the bone reference. Secondly, the control structure of the adjustment component is fully integrated in the circular plate, and the feedback structure of the adjustment component is the positioning plate. The distance between the control structure and the feedback structure is short, and the deflection angle of the feedback structure can be accurately controlled. The control structure and the osteotomy area are located at both ends of the feedback. During the rotation of the control structure, the operator can observe the coordination state between the guide body and the bone from multiple angles, which is convenient for observation and thus improves the accuracy of the operation;

[0015] 2. The navigation adjustable osteotomy guide, through the setting of the connecting component, when the guide body is installed with the auxiliary structure, the adjustment component and the simulation component or other tools that can be installed on the guide body and have an auxiliary effect on osteotomy, the installation direction of the auxiliary structure is the same as the installation direction of the connecting component, the auxiliary structure and the connecting component can be installed at the same time, when the auxiliary structure needs to be disassembled, the disassembly direction of the auxiliary structure is the same as the disassembly direction of the connecting component, so that the auxiliary structure can be quickly installed or disassembled. During the disassembly of the auxiliary structure, the auxiliary structure can be operated separately, thereby driving the connection component to be separated from the interface groove. During the installation and disassembly of the connection component, the operation is simple and fast, and there is no need to install and disassemble the auxiliary structure and the connection component separately. The auxiliary structure and the connection component can be installed and disassembled at the same time, saving time;

[0016] 3. The navigation adjustable osteotomy guide is set through the simulation component. After the simulation component is adjusted, the rotating probe is used to simulate the contact between the oscillating saw and the bone during cutting. The operator can clearly understand the cutting thickness and cutting angle of the oscillating saw. By driving the probe alone, the movement of the slide bar relative to the scale plate and the movement of the splint relative to the slide bar can be realized. The probe movement is highly free. The operator can move the probe directly from the starting point to the desired point, saving operation time. The position relationship between the fixed splint and the slide bar can be adjusted to adjust the height of the probe alone to improve the simulation accuracy. The simulation component has a variety of usage methods, which can be used according to specific circumstances to improve the flexibility of the simulation component. The probe movement can be indirectly controlled by rotating the scale plate without direct contact with the probe, thereby reducing direct contact between bacteria and bones. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the structure of the guide body of the present invention from top view;

[0020] Figure 3 It is a left side structural schematic diagram of the reference rod of the present invention;

[0021] Figure 4 It is a schematic diagram of the full cross-section structure of the adjustment assembly of the present invention from the left side;

[0022] Figure 5 It is a schematic diagram of the top view of the square rod structure of the present invention;

[0023] Figure 6 It is a schematic diagram of the front view of the full cross-section structure of the connection assembly of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the simulation component of the present invention from the right side;

[0025] Figure 8 It is a schematic diagram of the top view structure of the simulation component of the present invention.

[0026] In the figure: 1. guide body; 2. reference rod; 3. probe; 4. interface slot; 5. adjustment assembly; 501. positioning plate; 502. universal joint; 503. fixing plate; 504. round plate; 505. knob; 6. connecting assembly; 601. limit sleeve; 602. pull plate; 603. slide plate; 604. connecting rod; 605. clamping plate; 606. limit rod; 7. simulation assembly; 701. side plate; 702. ruler plate; 703. fork arm; 704. slide rod; 705. splint; 8. telescopic assembly; 801. bushing; 802. square rod; 803. threaded rod; 804. threaded sleeve; 805. connecting plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 8The present invention provides a technical solution: a navigation adjustable osteotomy guide, comprising a guide body 1, a guide groove, a reference rod 2 and a probe 3, wherein the guide body 1 is provided with a guide groove, the guide body 1 and the reference rod 2 are provided with nail holes, the guide body 1 is provided with a plurality of interface grooves 4, the front end of the guide body 1 is provided with an adjustment component 5, the upper part of the adjustment component 5 is provided with a reference rod 2, the adjustment component 5 is used to change the deflection angle between the guide body 1 and the reference rod 2, the interface groove 4 is provided with a connecting component 6, one side of the connecting component 6 is provided with a simulation component 7, the connecting component 6 is used to connect the guide body 1 to an auxiliary structure, the simulation component 7 is installed with a probe 3, and the simulation component 7 is used to determine the osteotomy plane;

[0029] The adjustment component 5 includes a positioning plate 501 installed on the outside of the guide body 1, a through hole is opened inside the positioning plate 501, the inner wall of the through hole matches the outer wall of the connecting component 6, the positioning plate 501 is connected to the guide body 1 through the connecting component 6, a plurality of universal shafts 502 are arranged at the front end of the positioning plate 501, a fixing plate 503 is arranged at the front end of the universal shaft 502, an annular tooth groove is arranged on the inner wall of the fixing plate 503, a circular plate 504 is arranged inside the fixing plate 503, and the inner wall of the circular plate 504 is provided with a circular tooth groove. The upper part is provided with a plurality of knobs 505, which are arranged vertically. The outer wall of the upper knob 505 is provided with a thread groove, and the upper knob 505 is threadedly connected with the circular plate 504. The outer wall of the lower knob 505 is provided with a tooth block, and the lower knob 505 is meshedly connected with the fixed plate 503. A telescopic assembly 8 is provided above the fixed plate 503, and the telescopic assembly 8 is used to connect the fixed plate 503 and the reference rod 2. The telescopic assembly 8 is used to change the straight-line distance between the fixed plate 503 and the reference rod 2;

[0030] The telescopic assembly 8 includes a sleeve 801 on one side of the fixed plate 503, a square rod 802 is arranged inside the sleeve 801, a threaded rod 803 is arranged on the outer wall of the square rod 802, a threaded sleeve 804 is arranged on the outer wall of the threaded rod 803, a connecting plate 805 is arranged on the upper end of the threaded rod 803, and the connecting plate 805 is slidably connected to the reference rod 2. The upper knob 505 is rotated to change the thickness difference between the front end and the rear end of the upper surface of the excess bone after being cut, and the lower knob 505 is rotated to change the thickness difference between the left and right sides of the upper surface of the excess bone after being cut. 8, and then change the thickness of the excess bone after the cut. After the adjustment is completed, the guide body 1 is positioned for the bone reference. Secondly, the control structure of the adjustment component 5 is all integrated in the circular plate 504, and the feedback structure of the adjustment component 5 is the positioning plate 501. The distance between the control structure and the feedback structure is short, and the deflection angle of the feedback structure can be accurately controlled. The control structure and the osteotomy area are located at both ends of the feedback. During the rotation of the control structure, the operator can observe the matching state between the guide body 1 and the bone from multiple angles, which is convenient for observation and thus improves the accuracy of the operation.

[0031] The connecting component 6 includes a limiting sleeve 601 installed inside the positioning plate 501, one end of the limiting sleeve 601 is located inside the interface groove 4, a pull plate 602 is provided on one side of the limiting sleeve 601, a slide plate 603 is provided on one side of the pull plate 602, the slide plate 603 is connected to the limiting sleeve 601 through a spring, the slide plate 603 penetrates one side surface of the limiting sleeve 601, one end of the slide plate 603 is provided with a plurality of connecting rods 604, the connecting rods 604 are connected to the limiting sleeve 601 through a rotating shaft, one end of the connecting rod 604 is provided with a card plate 605, the card plates 605 are connected by a limiting rod 606, one side of the card plate 605 penetrates the limiting sleeve 601, and when the guide body 1 is installed with the auxiliary structure, the adjusting component 5 and the simulation component 7 or other tools that can be installed on the guide body 1 and have an auxiliary effect on osteotomy, the installation direction of the auxiliary structure is the same as the installation direction of the connecting component 6, the auxiliary structure and the connecting component 6 can be installed at the same time, when the auxiliary structure needs to be disassembled, the disassembly direction of the auxiliary structure is the same as the disassembly direction of the connecting component 6, so that the auxiliary structure can be quickly installed or disassembled. During the disassembly of the auxiliary structure, the auxiliary structure can be operated separately, thereby driving the connection component 6 to separate from the interface groove 4. During the installation and disassembly of the connecting component 6, the operation is simple and fast, and there is no need to install and disassemble the auxiliary structure and the connecting component 6 separately. The auxiliary structure and the connecting component 6 can be installed and disassembled at the same time, saving time;

[0032] The simulation component 7 includes a side plate 701 installed on the outside of the guide body 1, the inner wall of the side plate 701 is provided with a through hole, the side plate 701 is connected to the guide body 1 through the connecting component 6, a ruler plate 702 is arranged on the upper end of the side plate 701, a fork arm 703 is arranged on one side of the ruler plate 702, a slide bar 704 is arranged above the fork arm 703, a splint 705 is arranged on the outer wall of the slide bar 704, the splint 705 is symmetrically arranged front and back about the slide bar 704, the splint 705 is connected to the ruler plate 702 through the fork arm 703, a longitudinal rod is arranged between the splints 705, the splint 705 is slidably connected to the longitudinal rod, and a probe 3 is arranged on one side of the splint 705. After the simulation component 7 is adjusted, the rotating probe 3 is used to simulate the interaction between the oscillating saw and the bone during cutting. The operator can clearly know the cutting thickness and cutting angle of the swing saw by driving the probe 3 alone, and can realize the movement of the slide bar 704 relative to the ruler 702 and the movement of the splint 705 relative to the slide bar 704. The probe 3 is highly free during movement, and the operator can move the probe 3 directly from the starting point to the desired point, saving operation time. The position relationship between the fixed splint 705 and the slide bar 704 can be used to adjust the height of the probe 3 alone, thereby improving the simulation accuracy. The simulation component 7 has a variety of usage methods, which can be operated according to specific circumstances, thereby improving the flexibility of the simulation component 7. The movement of the probe 3 can be indirectly controlled by rotating the ruler 702, without directly contacting the probe 3, thereby reducing the direct contact between bacteria and bones.

[0033] The knob 505 is connected to the positioning plate 501 through the universal shaft 502, the fixed plate 503 is deflected with the positioning plate 501 through the upper knob 505, and the fixed plate 503 is deflected with the positioning plate 501 through the lower knob 505;

[0034] A groove is provided inside the interface slot 4, the inner wall of the groove matches the outer wall of the card plate 605, the rotating shaft is located on the side of the connecting rod 604 close to the slide plate 603, and the slide plate 603 and the connecting rod 604 are slidably connected;

[0035] The outer walls of the ruler plate 702 and the slide rod 704 are both provided with scale grooves, and the clamping plate 705 is connected to the fork arm 703 through screw nails.

[0036] Working principle of the present invention: The guide body 1 is mainly used for knee joint correction, and the redundant bones that affect the normal movement of the knee joint are cut off;

[0037] The reference rod 2 is installed at the distal end of the femur or the tibial platform. A nail hole is provided inside the reference rod 2. The reference rod 2 is fixed to the bone by bone nails. Then the telescopic component 8 is sleeved on the reference rod 2. At this time, the lower end of the telescopic component 8 is connected to the adjustment component 5. The telescopic component 8 and the adjustment component 5 are connected by threads. One side of the adjustment component 5 is connected to the guide body 1 through the connecting component 6. The concave side of the guide body 1 faces the bone.

[0038] The relative position between the reference rod 2 and the connecting plate 805 is adjusted by sliding, and the adjusted reference rod 2 and the connecting plate 805 are fixed by screws, and the threaded sleeve 804 outside the threaded rod 803 is rotated, and the threaded rod 803 and the sleeve 801 are relatively displaced, thereby realizing the change of the linear distance between the guide body 1 and the reference rod 2, until the guide body 1 moves to a suitable position;

[0039] Then the adjustment component 5 can be operated to adjust the relative position between the guide body 1 and the bone, wherein two knobs 505 are arranged inside the circular plate 504, the knobs 505 are connected to the positioning plate 501 through the universal shaft 502, and the positioning plate 501 is connected to the guide body 1 through the connecting component 6, so that the relative position between the guide body 1 and the bone can be changed by rotating the knobs 505 to change the state of the positioning plate 501;

[0040] The outer wall of the upper knob 505 is provided with a threaded groove, and the upper knob 505 is threadedly connected with the circular plate 504. When the upper knob 505 is rotated, a longitudinal displacement occurs between the knob 505 and the circular plate 504, so that the positioning plate 501 is deflected with the lower universal shaft 502 as the center, and the upper part of the positioning plate 501 is deflected forward and backward. The outer wall of the lower knob 505 is provided with a tooth block, and the lower knob 505 is meshedly connected with the fixed plate 503. By rotating the lower knob 505, the tooth block on the outer wall of the lower knob 505 meshes with the tooth groove inside the fixed plate 503, driving the positioning plate 501 to rotate with the circular plate 504 as the center;

[0041] The simulation component 7 is installed on one side of the guide body 1 through the connecting component 6. The operator places both hands on the threaded nail cap on the outer side of the clamping plate 705, and changes the relative position between the clamping plate 705, the fork arm 703 and the slide bar 704 by driving the threaded nail cap. The slide bar 704 slides up and down along the outer wall of the ruler 702, and the clamping plate 705 slides horizontally along the outer wall of the slide bar 704. Then the fork arm 703 connects the side plate 701 and the clamping plate 705, and a triangle is formed between the ruler 702, the fork arm 703 and the slide bar 704. The probe 3 is in contact with a The two clamps 705 are fixedly connected, and the probe 3 is moved to a suitable position by the threaded nail cap. The clamps 705 are located on both sides of the slide bar 704. Threaded nails are installed in the clamps 705 on both sides. The threaded nails on one side are used to fix the clamps 705 and the slide bar 704, and the threaded nails on one side are used to fix the clamps 705 and the fork arm 703. After the ruler plate 702, the fork arm 703 and the slide bar 704 are fixed, the ruler plate 702 can be rotated, and the probe 3 rotates synchronously with the ruler plate 702 as the center of the circle. The rotation process of the probe 3 simulates the osteotomy process.

[0042] The suitability of the position of the guide body 1 is verified by simulating the osteotomy process, and the guide body 1 is adjusted to a suitable position for multiple times. After the positioning plate 501 is adjusted, the guide body 1 is fixed between the bones by bone screws, and then other structures except the guide body 1 are removed. The fixed guide body 1 is the bone reference positioning for the osteotomy operation.

[0043] The side plate 701 is pulled outward along the outer wall of the interface groove 4, and the side plate 701 drives the pull plate 602 and the slide plate 603 to move. The slide plate 603 slides relative to the limit sleeve 601 and compresses the spring connecting the two. One end of the slide plate 603 is connected to one end of the connecting rod 604. The slide plate 603 drives the connecting rod 604 to deflect with the rotating shaft. The clamping plates 605 at the other end of the connecting rod 604 approach each other until the clamping plates 605 are separated from the groove in the interface groove 4. After separation, the connecting component 6 leaves the interface groove 4 under the action of the tension. After losing the restriction of the interface groove 4, the clamping plate 605 is reset under the action of the spring, and the adjusting component 5, the telescopic component 8 and the reference rod 2 are driven to leave the guide body 1 by pulling the adjusting component 5;

[0044] The oscillating saw is installed inside the guide groove in the guide body 1, and the redundant bone can be removed by the oscillating saw.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A navigation-adjustable osteotomy guide, comprising a guide body (1), a guide slot, a reference rod (2) and a probe (3), characterized in that: The guide body (1) is provided with a guide groove inside, the guide body (1) and the reference rod (2) are provided with nail holes inside, the guide body (1) is provided with a plurality of interface grooves (4) inside, the front end of the guide body (1) is provided with an adjustment component (5), the upper part of the adjustment component (5) is provided with a reference rod (2), the adjustment component (5) is used to change the deflection angle between the guide body (1) and the reference rod (2), the interface groove (4) is provided with a connecting component (6), one side of the connecting component (6) is provided with a simulation component (7), the connecting component (6) is used to connect the guide body (1) to the auxiliary structure, the simulation component (7) is installed with a probe (3) inside, the simulation component (7) is used to determine the osteotomy plane; A telescopic assembly (8) is arranged above the adjusting assembly (5), the telescopic assembly (8) being used to connect the adjusting assembly (5) and the reference rod (2), and the telescopic assembly (8) being used to change the straight-line distance between the adjusting assembly (5) and the reference rod (2); The simulation component (7) comprises a side plate (701) installed on the outside of the guide body (1), the inner wall of the side plate (701) is provided with a through hole, the side plate (701) is connected to the guide body (1) through a connecting component (6), a ruler plate (702) is arranged at the upper end of the side plate (701), a fork arm (703) is arranged on one side of the ruler plate (702), a slide bar (704) is arranged above the fork arm (703), a clamping plate (705) is arranged on the outer wall of the slide bar (704), the clamping plate (705) is connected to the ruler plate (702) through the fork arm (703), and a probe (3) is arranged on one side of the clamping plate (705); The outer walls of the ruler plate (702) and the slide rod (704) are both provided with scale grooves, and the clamping plate (705) is connected to the fork arm (703) via a screw. The scalar plate (702) and the side plate (701) are movably connected. When the scalar plate (702) is rotated, the probe (3) rotates synchronously with the scalar plate (702) as the center. The rotation process of the probe (3) simulates the osteotomy process. The probe (3) is driven to move vertically and horizontally by the threaded nail cap without directly contacting the probe (3). The relative positions of the clamping plate (705), the fork arm (703) and the slide bar (704) are changed by driving the screw nut, wherein the slide bar (704) slides up and down along the outer wall of the ruler plate (702), and the clamping plate (705) slides horizontally along the outer wall of the slide bar (704), and the positions of the clamping plate (705), the fork arm (703) and the slide bar (704) are changed, and the scales displayed on the ruler plate (702) and the slide bar (704) are changed synchronously, and the ruler plate (702) is close to the ruler plate (702). The value represented by the scale line on one side of the slide bar (704) is the height value of the probe (3), and the value represented by the scale line on the side of the slide bar (704) close to the clamping plate (705) is the depth value of the probe (3), wherein the clamping plates (705) are located on both sides of the slide bar (704), and screw nails are installed in the clamping plates (705) on both sides, and the screw nails on one side are used to fix the clamping plates (705) and the slide bar (704), and the screw nails on one side are used to fix the clamping plates (705) and the fork arm (703); The reference rod (2) is used to be installed on the distal end of the femur or the tibial platform, and the reference rod (2) is fixed to the bone by bone screws; The oscillating saw is installed inside the guide groove in the guide body (1), and the redundant bone can be removed by the oscillating saw.

2. The adjustable osteotomy guide for navigation according to claim 1, characterized in that: The adjustment assembly (5) comprises a positioning plate (501) mounted on the outside of the guide body (1), a through hole is provided inside the positioning plate (501), the inner wall of the through hole matches the outer wall of the connecting assembly (6), the positioning plate (501) is connected to the guide body (1) via the connecting assembly (6), a plurality of universal shafts (502) are arranged at the front end of the positioning plate (501), a fixing plate (503) is arranged at the front end of the universal shaft (502), and the fixing plate (503) The inner wall of the fixed plate (503) is provided with an annular tooth groove, a circular plate (504) is provided inside the fixed plate (503), a plurality of knobs (505) are provided inside the circular plate (504), the knobs (505) are arranged vertically, a thread groove is provided on the outer wall of the upper knob (505), the upper knob (505) and the circular plate (504) are threadedly connected, a tooth block is provided on the outer wall of the lower knob (505), and the lower knob (505) and the fixed plate (503) are meshingly connected.

3. The adjustable osteotomy guide for navigation according to claim 2, characterized in that: The telescopic assembly (8) comprises a shaft sleeve (801) on one side of a fixed plate (503); a square rod (802) is arranged inside the shaft sleeve (801); a threaded rod (803) is arranged on the outer wall of the square rod (802); a threaded sleeve (804) is arranged on the outer wall of the threaded rod (803); a connecting plate (805) is arranged at the upper end of the threaded rod (803); and the connecting plate (805) is slidably connected to the reference rod (2).

4. The adjustable osteotomy guide for navigation according to claim 2, characterized in that: The connecting assembly (6) comprises a limiting sleeve (601) installed inside the positioning plate (501), one end of the limiting sleeve (601) is located inside the interface groove (4), a pull plate (602) is provided on one side of the limiting sleeve (601), a slide plate (603) is provided on one side of the pull plate (602), the slide plate (603) and the limiting sleeve (601) are connected via a spring, the slide plate (603) passes through a surface of one side of the limiting sleeve (601), a plurality of connecting rods (604) are provided at one end of the slide plate (603), the connecting rods (604) are connected to the limiting sleeve (601) via a rotating shaft, a clamping plate (605) is provided at one end of the connecting rod (604), the clamping plates (605) are connected via a limiting rod (606), and one side of the clamping plate (605) passes through the limiting sleeve (601).

5. The adjustable osteotomy guide for navigation according to claim 2, characterized in that: The knob (505) is connected to the positioning plate (501) via a universal shaft (502); the fixed plate (503) is deflected relative to the positioning plate (501) via the upper knob (505); and the fixed plate (503) is deflected relative to the positioning plate (501) via the lower knob (505).

6. The adjustable osteotomy guide for navigation according to claim 4, characterized in that: A groove is provided inside the interface slot (4), the inner wall of the groove matches the outer wall of the clamping plate (605), the rotating shaft is located on a side of the connecting rod (604) close to the slide plate (603), and the slide plate (603) and the connecting rod (604) are slidably connected.

Images