Surgical guide and its manufacturing method

Abstract

This invention discloses a surgical guide and its manufacturing method. The surgical guide includes: a plate body with at least two guide grooves penetrating the plate body and interconnected at an angle, the angle being the osteotomy angle; and a positioning part located at the edge of the plate body, used to locate the relative position between two bone fragments after osteotomy. Using this design, the guide grooves penetrating the plate body guide the osteotomy path of osteotomy tools during surgery, such as oscillating saw blades or milling cutters. Furthermore, the interconnected guide grooves provide the osteotomy angle, improving the accuracy of osteotomy. The positioning part can locate the relative position of the two bone fragments after osteotomy, thereby improving the accuracy of bone fragment positioning, thus improving the therapeutic effect of surgical correction of deformities and reducing postoperative pain. Additionally, the positioning part is located at the edge of the plate body, allowing for positioning using the edge of the plate body.

Description

Technical Field

[0001] This invention relates to a medical device, specifically to a surgical guide and its manufacturing method, and more particularly to a surgical guide for hallux valgus osteotomy and its manufacturing method. Background Technology

[0002] Hallux valgus is a common clinical condition. It causes foot pain and deformity, negatively impacting patients' lives. Hallux valgus osteotomy is an effective treatment for hallux valgus. Common surgical procedures (such as Chevron's osteotomy) include osteotomy, bone fragment movement, and bone fragment fixation. The location of the osteotomy, the position of the bone fragment fixation, and the angle of fixation affect the corrective effect and long-term efficacy. Inaccurate osteotomy or fixation can lead to poor correction, postoperative pain, and in severe cases, may require repeat surgery.

[0003] Hallux valgus osteotomy correction surgery requires a high level of surgical skill. Currently, in hallux valgus osteotomy correction surgery, surgeons rely on visual observation when performing osteotomy and fixing the position and angle of bone blocks. This reliance on experience makes it difficult to precisely control the operation, which may result in unsatisfactory osteotomy angles and adversely affect the treatment outcome. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of inaccurate osteotomy and poor fixation position and angle of bone blocks in osteotomy and correction surgery, especially in hallux valgus osteotomy and correction surgery, and to provide a surgical guide and its manufacturing method.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A surgical guide, the surgical guide comprising:

[0007] The plate body has at least two guide grooves that penetrate the plate body and are interconnected and set at an angle, the angle being the osteotomy angle.

[0008] The positioning part is disposed on the edge of the plate and is used to position the relative position between the two bone blocks after osteotomy.

[0009] In this design, the guide grooves running through the plate guide the osteotomy path of tools such as oscillating saw blades or milling cutters during surgery. These guide grooves are interconnected and provide osteotomy angles, improving the accuracy of the osteotomy. The positioning unit can locate the relative positions of the two bone fragments after osteotomy, thereby improving the accuracy of bone fragment positioning, enhancing the therapeutic effect of surgical correction of deformities, and reducing postoperative pain. Furthermore, the positioning unit is located at the edge of the plate, allowing for positioning using the plate's edge.

[0010] Preferably, the positioning part includes a first positioning surface and a second positioning surface, the first positioning surface and the second positioning surface being used to fit against the two bone blocks respectively, so that the relative position between the two bone blocks after osteotomy is determined.

[0011] In this solution, the first and second positioning surfaces are attached to the two bone blocks, thereby increasing the contact area between the positioning part and the bone blocks and improving the accuracy of bone block positioning.

[0012] Preferably, the first positioning surface and the second positioning surface are arranged parallel to each other or have a preset angle, and there is a preset distance between the first positioning surface and the second positioning surface.

[0013] In this solution, the first positioning surface and the second positioning surface are arranged parallel to each other or at a preset angle, which can locate the relative angle between the bone blocks; the first positioning surface and the second positioning surface have a preset distance, which can locate the relative distance between the bone blocks; this not only improves the convenience of positioning operation, but also makes the relative position of the two bone blocks accurately determined.

[0014] Preferably, the edge of the plate is provided with a groove; one of the first positioning surface and the second positioning surface is the groove surface inside the groove, and the other is a surface on the plate adjacent to the groove, the surface and the groove surface having a preset distance and facing the same direction.

[0015] In this solution, a groove is set at the edge of the plate, and the groove surface in the groove and the surface on the plate that is adjacent to the groove, faces the same direction, and has a preset interval are used to form a first positioning surface and a second positioning surface; the structure is simple and easy to design and manufacture.

[0016] Preferably, the groove extends along the edge of the plate and forms a long, rectangular structure; one of the first positioning surface and the second positioning surface is a side surface of the plate corresponding to the long side of the groove, and the other is a groove surface of the groove facing the same direction as the side surface.

[0017] In this solution, by adopting the above structural form, the groove is long and narrow. The side surface of the plate corresponding to the long side of the groove can be used as the positioning surface, as well as the longer groove surface in the groove. The positioning surface has a certain length, so it can fit with various parts of the bone block, improving the positioning accuracy between the bone blocks. In addition, the groove structure is simple and can be set using the edge of the plate, which is convenient for arrangement.

[0018] Preferably, the surgical guide plate includes at least three guide grooves, which intersect to form at least two osteotomy angles. The plate body is provided with at least two positioning parts, and the osteotomy angles correspond one-to-one with the positioning parts.

[0019] In this design, the surgical guide provides at least two osteotomy angles, allowing the surgeon to select the appropriate angle as needed during the operation, thus improving intraoperative flexibility. Additionally, at least two positioning sections are provided, each corresponding to an osteotomy angle. During the operation, the surgeon can select the appropriate positioning section based on the actual osteotomy angle used, resulting in both flexible surgery and accurate bone fragment positioning.

[0020] Preferably, at least one of the three guide grooves is a reference groove, and any one of the remaining guide grooves forms the osteotomy angle with the reference groove.

[0021] In this scheme, multiple guide grooves can use one of them as a reference groove, and the other guide grooves can reuse the reference groove to form different osteotomy angles, making the arrangement more compact.

[0022] Preferably, the plate has a polygonal structure, and the plurality of positioning portions are located on different sides of the plate.

[0023] In this design, the arrangement allows for a smaller panel size and a more compact structure.

[0024] Preferably, the plate has a marking for identifying the correspondence between the positioning part, the guide groove, and the corresponding osteotomy angle.

[0025] In this solution, the positioning part can be quickly and accurately matched with the corresponding osteotomy angle, avoiding misoperation.

[0026] Preferably, the plate body also has a fixing hole, and at least one of the fixing holes is arranged near the intersection of the guide groove.

[0027] In this design, the fixation holes allow the fixation components to pass through and fix the surgical guide to the bone block, preventing the surgeon from pressing the guide against the bone surface with their hands, thus facilitating the operation during surgery and reducing obstruction of the surgical field. In addition, placing the fixation holes close to the intersection of the guide grooves makes the positioning at the intersection more secure.

[0028] Preferably, the surgical guide is used for osteotomy correction surgery of hallux valgus.

[0029] A method for manufacturing a surgical guide, the method comprising:

[0030] Obtain medical imaging data of the bone to be osteotomized;

[0031] Obtain osteotomy information determined based on the medical imaging data. The osteotomy information includes the location of the osteotomy, the osteotomy angle, and the relative position of the two bone fragments after the osteotomy. The relative position of the two bone fragments is related to the location of the osteotomy and the osteotomy angle.

[0032] Obtain the osteotomy angle and corresponding guide groove of the surgical guide plate determined based on the position and angle of the osteotomy, and the positioning part determined based on the relative position of the two bone blocks after the osteotomy;

[0033] The surgical guide plate is designed based on the guide groove and the positioning part.

[0034] In this approach, the above steps allow for the preoperative planning of osteotomy locations and angles based on the patient's bone condition, as well as the determination of the osteotomy angle for the surgical guide. Simultaneously, the relative positions of two bone fragments are determined using one or more determined osteotomy locations and angles, and the positioning portion of the surgical guide is established based on these relative positions. The surgical guide manufactured through these steps is tailored to the patient's bone condition, guiding intraoperative procedures while improving the accuracy of osteotomy and reshaping surgery, reducing postoperative pain, and enhancing the therapeutic effect.

[0035] The positive and progressive effects of this invention are as follows: the guide grooves penetrating the plate guide the osteotomy path of osteotomy tools during surgery, such as oscillating saw blades or milling cutters, and the guide grooves are interconnected and provide osteotomy angles, improving the accuracy of osteotomy. The positioning part can locate the relative position of the two bone fragments after osteotomy, thereby improving the accuracy of bone fragment positioning, thus improving the treatment effect of surgical correction of deformities and reducing postoperative pain. In addition, the positioning part is located at the edge of the plate, so that the edge of the plate can be used for positioning. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a hallux valgus osteotomy correction, in which the thumb is cut into two bone pieces, and the relative positions of the two bone pieces are defined.

[0037] Figure 2 This is a schematic diagram of the planar structure of a surgical guide provided in an embodiment of the present invention;

[0038] Figure 3 This is a three-dimensional structural diagram of a surgical guide provided in an embodiment of the present invention, wherein the first positioning part is partially enlarged;

[0039] Figure 4 This is a schematic diagram of another type of hallux valgus osteotomy, in which the thumb is cut into two bone pieces.

[0040] Explanation of reference numerals in the attached figures

[0041] Surgical guide plate 1, plate body 10, guide groove 11, first guide groove 111, second guide groove 112, third guide groove 113, positioning part 13, first positioning part 131, first groove surface 1311, third groove surface 1312, second groove surface 1313, second positioning part 132, first side surface 14, third surface 15, second side surface 16, osteotomy surface 2, first bone block 21, second bone block 22, first bone block surface 211, bone block cutting surface 212, second bone block surface 221, movement adjustment direction X, angle adjustment direction Y. Detailed Implementation

[0042] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0043] This invention provides a surgical guide 1, which is used in osteotomy surgery, such as... Figure 1 As shown, this can be used for osteotomy correction surgery of hallux valgus. During the surgery, the surgical site on the patient's foot is first exposed by making an incision according to standard surgical procedures. A portion of the protruding bone is longitudinally removed, exposing the osteotomy surface 2. In subsequent steps, a V-shaped groove is cut at the osteotomy surface 2, dividing the foot bone into two bone blocks, namely the first bone block 21 and the second bone block 22. Then, the first bone block 21 and the second bone block 22 are moved relative to each other along the cut direction of the V-shaped groove, so that the second bone block 22 is in a suitable position relative to the first bone block 21.

[0044] The surgical guide 1 provided by this invention is used in the surgical procedure, such as... Figure 2 and Figure 3 As shown, the surgical guide 1 includes:

[0045] The plate 10 has at least two guide grooves 11 that penetrate the plate 10. The guide grooves 11 are interconnected and set at an angle, which is the osteotomy angle.

[0046] The positioning part 13 is disposed on the edge of the plate 10 and is used to position the relative position between the two bone blocks after osteotomy.

[0047] The guide groove 11, which runs through the plate 10, guides the osteotomy path of osteotomy tools, such as oscillating saw blades or milling cutters, during surgery. The guide grooves 11 are interconnected and provide osteotomy angles, improving the accuracy of osteotomy. The positioning part 13 can locate the relative positions of the two bone fragments after osteotomy, thereby improving the accuracy of bone fragment positioning, thus enhancing the therapeutic effect of surgical correction of deformities and reducing postoperative pain. Furthermore, the positioning part 13 is located at the edge of the plate 10, allowing for positioning using the edge of the plate 10.

[0048] In practice, the length and width of the guide groove 11 are not less than the length and width of the oscillating saw or milling cutter used during osteotomy, so that the oscillating saw or milling cutter can pass through the guide groove 11. In addition, the length of the guide groove 11 is also longer than the cut length of the big toe, that is, the length of the groove edge of the V-shaped groove.

[0049] The relative position between two bone fragments includes the relative distance between them, such as... Figure 1 The distance in the X-direction of movement adjustment is shown in the figure; and the relative angle between the two bone blocks, as shown in the figure. Figure 1 The angle shown is the angle in the Y direction of adjustment.

[0050] like Figure 2 and Figure 3 As shown, the guide groove 11 is disposed on the plate 10 and is a certain distance from the edge of the plate 10. The positioning part 13 is disposed at the edge of the plate 10. The positioning part 13 and the guide groove 11 are offset from each other to facilitate surgical operation.

[0051] Furthermore, the positioning part 13 includes a first positioning surface and a second positioning surface, which are respectively used to fit against two bone blocks to determine the relative position between the two bone blocks after osteotomy. By fitting the first positioning surface and the second positioning surface against the two bone blocks, the contact area between the positioning part 13 and the bone blocks can be increased, thereby improving the accuracy of bone block positioning. Specifically, the two positioning surfaces are typically flat surfaces that can fit against the surface 211 of the first bone block and the surface 221 of the second bone block, respectively.

[0052] Furthermore, the first positioning surface and the second positioning surface are arranged parallel to each other or at a preset angle, and there is a preset distance between the first positioning surface and the second positioning surface. The parallel arrangement or the preset angle between the first positioning surface and the second positioning surface can locate the relative angle between the bone blocks; the preset distance between the first positioning surface and the second positioning surface can locate the relative distance between the bone blocks; this not only improves the convenience of the positioning operation, but also allows the relative position of the two bone blocks to be accurately determined.

[0053] like Figure 2 and Figure 3 As shown, the two positioning surfaces in the first positioning part 131, the first side surface 14 and the first groove surface 1311, are parallel to each other; the two positioning surfaces in the second positioning part 132, the first side surface 14 and the first groove surface 1311, have a preset angle. By arranging them parallel or at an angle, the angle in the angle adjustment direction Y of the two bone blocks can be adjusted. In addition, there is a preset distance between the first side surface 14 and the first groove surface 1311 of the first positioning part 131 and the second positioning part 132, which is also the width of the third groove surface 1312; by using this preset distance, the distance in the movement adjustment direction X of the two bone blocks can be adjusted.

[0054] In specific implementation, the first positioning surface and the second positioning surface of the positioning part 13 can adopt various structural forms. Specifically, the surface on the plate 10 can be used as the positioning surface. The embodiments of the present invention provide the following arrangement. Other embodiments may also have other structural forms. The scope of protection of the present invention should not be limited to the following embodiments.

[0055] like Figure 2 and Figure 3 As shown, the edge of the plate 10 is provided with a groove; one of the first positioning surface and the second positioning surface is the groove surface inside the groove, and the other is a surface on the plate 10 adjacent to the groove surface with a predetermined distance and facing the same direction. By setting a groove on the edge of the plate 10, the first positioning surface and the second positioning surface are formed by using the groove surface inside the groove and the surface on the plate 10 adjacent to the groove surface with the same direction and a predetermined distance; this structure is simple and easy to design and manufacture.

[0056] like Figure 2 and Figure 3 As shown, the plate 10 is generally a flat plate structure. A groove is recessed into the surface of the plate 10 and communicates with the edge of the plate 10. The groove has a first groove surface 1311, a second groove surface 1313, and a third groove surface 1312. The surfaces of the plate 10 adjacent to the groove are the first side surface 14, the second side surface 16, and the third surface 15, respectively. "Same orientation" means that two surfaces arranged along the same direction with the length, width, and height of the plate 10 as the orientation are considered to have the same orientation.

[0057] Specifically, the two positioning surfaces of the positioning part 13 can be a first groove surface 1311 and a first side surface 14. In this case, the relative angle of the two bone blocks can be adjusted by configuring the first groove surface 1311 and the first side surface 14 to be parallel or at an angle, and the relative distance between the two bone blocks can be adjusted by configuring the distance between the third groove surface 1312 and the first side surface 14. Alternatively, the two positioning surfaces of the positioning part 13 can be a second groove surface 1313 and a second side surface 16. In this case, the relative angle of the two bone blocks can be adjusted by configuring the second groove surface 1313 and the second side surface 16 to be parallel or at an angle, and the relative distance between the two bone blocks can be adjusted by configuring the distance between the third groove surface 1312 and the second side surface 16. Alternatively, the two positioning surfaces of the positioning part 13 can be a third groove surface 1312 and a third surface 15. In this case, the relative angle of the two bone blocks can be adjusted by configuring the third groove surface 1312 and the third surface 15 to be parallel or at an angle, and the relative distance between the two bone blocks can be adjusted by configuring the distance of the first groove surface 1311 between the third groove surface 1312 and the third surface 15. Preferably, the first groove surface 1311 and the first side surface 14, or the second groove surface 1313 and the second side surface 16 are used as positioning surfaces, which can reduce the thickness of the plate 10.

[0058] like Figure 2 and Figure 3 As shown, the groove extends along the edge of the plate 10, forming a long, rectangular structure. One of the first and second positioning surfaces is a side surface of the plate 10 corresponding to the long side of the groove, and the other is a groove surface in the groove facing the same direction as the side surface. The groove is long and narrow, and the side surface of the plate 10 corresponding to the long side of the groove can be used as the positioning surface, as well as the longer groove surface in the groove. This positioning surface has a certain length, so it can fit against various parts of the bone block, improving the accuracy of positioning between bone blocks. In addition, the groove structure is simple and can be set using the edge of the plate 10, which is convenient for arrangement.

[0059] When the two positioning surfaces are the first groove surface 1311 and the first side surface 14, the first side surface 14 is in contact with the second bone block surface 221, and the first groove surface 1311 is in contact with the first bone block surface 211; preferably, the third groove surface 1312 can also be in contact with the bone block cutting surface 212.

[0060] In practice, the surgical guide 1 can provide multiple osteotomy angles. Specifically, the surgical guide 1 includes at least three guide grooves 11, which intersect to form at least two osteotomy angles. The plate body 10 is provided with at least two positioning parts 13, with each osteotomy angle corresponding to one of the positioning parts 13. The surgical guide 1 can provide at least two osteotomy angles, allowing the surgeon to select the appropriate angle during the operation, thus improving intraoperative flexibility. Furthermore, at least two positioning parts 13 are provided, and these positioning parts 13 correspond to the osteotomy angles. During the operation, the surgeon can select the appropriate positioning part 13 according to the actual osteotomy angle used, thereby making the surgery not only flexible but also accurately positioning the bone fragments.

[0061] At least three guide grooves 11 include one reference groove, and any one of the remaining guide grooves 11 forms an osteotomy angle with the reference groove. Multiple guide grooves 11 can use one of them as the reference groove, and the other guide grooves 11 can reuse the reference groove to form different osteotomy angles, making the arrangement more compact.

[0062] like Figure 2 and Figure 3 As shown, the plate 10 has a first guide groove 111, a second guide groove 112, and a third guide groove 113, which intersect and form an angle between each pair of grooves. The first guide groove 111 serves as a reference groove; the second guide groove 112 forms a first osteotomy angle with the reference groove, and the first positioning part 131 corresponds to the first osteotomy angle; the third guide groove 113 forms a second osteotomy angle with the reference groove, and the second positioning part 132 corresponds to the second osteotomy angle. Specifically, when the surgeon performs osteotomy using the first osteotomy angle, the first positioning part 131 positions the two bone fragments; when the surgeon performs osteotomy using the second osteotomy angle, the second positioning part 132 positions the two bone fragments.

[0063] Furthermore, the two osteotomy angles can be customized to offer two options based on the patient's physiological parameters, such as 40°, 45°, 60°, or 90°. During surgery, a suitable osteotomy angle can be selected based on factors such as the surgeon's incision path and the ease of installing the guide plate. When an osteotomy angle is selected, the center lines of the two guide grooves 11 corresponding to that angle are aligned with the central axis of the bone.

[0064] In practice, the plate 10 has a polygonal structure, with multiple positioning parts 13 located on different sides of the plate 10. This arrangement allows the plate 10 to be smaller and more compact.

[0065] like Figure 2 and Figure 3As shown, the plate 10 has a quadrilateral structure, and the guide groove 11 is located at one corner of the plate 10. The first positioning part 131 and the second positioning part 132 are respectively located on two adjacent edges of the plate 10. Among them, one edge of the plate 10 connected by the first positioning part 131 and one edge of the plate 10 connected by the second positioning part 132 are the same edge.

[0066] The plate 10 has markings to identify the correspondence between the positioning part 13, the guide groove 11, and the corresponding osteotomy angle. This allows for quick and accurate matching of the positioning part 13 with the corresponding osteotomy angle, avoiding misoperation.

[0067] In specific implementations, the markings may include markings indicating the positioning part 13, markings indicating the guide groove 11, and / or markings indicating the osteotomy angle. Accordingly, the markings may be disposed within the positioning part 13, at the guide groove 11, and / or at the osteotomy angle. Specifically, such as... Figure 2 and Figure 3 As shown, the marking is located within the third groove surface 1312 of the positioning part 13, or it can be located on the first side surface 14 or the second side surface 16. Correspondingly, the marking can be located at the extended end of the guide groove 11 (the end opposite to the intersecting end); it can also be located within the osteotomy angle between the two guide grooves 11. In addition, the marking can take various forms, such as using numbers like "1" or "2", or indicating the corresponding osteotomy angle value, such as "45" or "60".

[0068] like Figure 2 and Figure 3 As shown, the plate 10 also has through holes, and at least one of the holes is located near the intersection of the guide groove 11. The holes allow the fixing components to pass through and fix the surgical guide plate 1 to the bone block, preventing the surgeon from pressing the guide plate against the bone surface by hand, thus facilitating the operation during surgery and reducing obstruction of the surgical field. In addition, arranging the holes near the intersection of the guide groove 11 makes the positioning at the intersection more secure.

[0069] In practice, the fixing holes are used to allow Kirschner wires to pass through, thereby fixing the surgical guide 1 to the surface of the bone. Preferably, the fixing holes are through circular holes. A surgical guide 1 may have one fixing hole or more fixing holes. By fixing through the fixing holes, the intersection points of the guide grooves 11 at the V-shaped grooves coincide.

[0070] This invention also provides a method for manufacturing a surgical guide 1. The method is used to manufacture a surgical guide 1 as described above, and includes the following steps:

[0071] S100: Acquire medical imaging data of the bone to be osteotomized. Perform imaging examinations on the foot of patients with hallux valgus, such as computed tomography (CT) scans or X-rays.

[0072] S200: Obtain osteotomy information determined based on medical imaging data. This information includes the osteotomy location, osteotomy angle, and the relative positions of the two bone fragments after osteotomy. The relative positions of the two bone fragments are related to the osteotomy location and angle. Measure angles such as the hallux valgus angle based on the imaging data. Simulate the osteotomy location, osteotomy angle, and the position and angle of the bone fragment fixation after osteotomy on a computer; i.e., perform preoperative planning, designing at least one osteotomy angle and positioning element 13.

[0073] S300: Obtain the osteotomy angle of the surgical guide 1 and the corresponding guide groove 11, determined based on the location and angle of the osteotomy, and the positioning part 13, determined based on the relative position of the two bone fragments after the osteotomy. For example... Figure 2 and Figure 3 As shown, the preoperatively planned osteotomy positions and the included angles of the osteotomy are the first guide groove 111, the second guide groove 112, and the third guide groove 113. That is, the first guide groove 111 and the second guide groove 112 form the first osteotomy angle, and the first guide groove 111 and the third guide groove 113 form the second osteotomy angle. This determines the position of the guide groove 11 on the surgical guide plate 1. Based on the position and angle of the bone block fixation after osteotomy using the first guide groove 111 and the second guide groove 112, the distance and angle of bone block movement are measured. This determines the distance and angle between the first groove surface 1311 and the first side surface 14. The depth of the first positioning part 131 is set based on experience. Similarly, based on the position and angle of the bone block fixation after osteotomy using the first guide groove 111 and the third guide groove 113, the two surfaces of the second positioning part 132 are determined.

[0074] S400: Design the surgical guide 1 based on the guide groove 11 and the positioning part 13. Based on the design in S1, a cuboid model is created in the computer's 3D design software. The positions of the guide groove 11 and the positioning part 13 are placed on the cuboid model, and the fixing holes are placed, thereby generating a computer 3D model of the surgical guide 1.

[0075] Through the above steps, the osteotomy location and angle can be planned preoperatively based on the patient's bone condition, and the osteotomy angle of the surgical guide 1 can be determined. At the same time, the relative position of the two bone fragments is determined by one or more osteotomy locations and angles, and the positioning part 13 of the surgical guide 1 is determined based on the relative position. The surgical guide 1 manufactured through the above steps can match the patient's bone condition, guide the operation during the operation, improve the accuracy of osteotomy and reshaping surgery, reduce postoperative pain, and improve the treatment effect of the surgery.

[0076] Finally, the computer 3D model of the surgical guide 1 designed in step S400 is imported into the 3D printer to print the surgical guide 1, forming the actual surgical guide 1.

[0077] This invention also provides a method for using the surgical guide 1, as follows: Figure 2 and Figure 3 Taking the surgical guide 1 shown as an example, the method of use includes:

[0078] During the surgery, the surgical site on the patient's foot is exposed using standard surgical procedures. A portion of the protruding bone is longitudinally removed, exposing the osteotomy surface 2. A surgical guide 1 is placed. Depending on the surgeon's incision path and the ease of guide placement, the choice is made between using the first guide groove 111 and the second guide groove 112 to guide the osteotomy, or using the first guide groove 111 and the third guide groove 113. The guide is fixed in place using Kirschner wires through the fixation holes. An oscillating saw or milling cutter is used as the osteotomy tool, passing through the osteotomy grooves to perform the osteotomy. After osteotomy, remove the Kirschner wires and the surgical guide 1. Select the first positioning part 131 or the second positioning part 132 according to the guide groove 11 selected for osteotomy. For example, if the first guide groove 111 and the second guide groove 112 were used to guide the osteotomy, select the first positioning part 131. Place the third groove surface 1312 on the cutting surface 212 of the bone block formed by osteotomy. Push the surgical guide 1 so that the first groove surface 1311 is in close contact with the first bone block surface 211 of the first bone block 21. Place the cut second bone block 22 on the first side surface 14 so that the second bone block 22 is in close contact with the surface. Fix the bone block with internal fixation according to the placement position and angle of the bone block at this time. Remove the guide and close the surgical incision.

[0079] In practice, hallux valgus osteotomy correction also includes, for example, Figure 4 The illustrated form, known as scarfosteotomy, involves forming a Z-shaped groove that divides the bone into a first bone block 21 and a second bone block 22, with the second bone block 22 being repositioned relative to the first bone block 21. When applied to this procedure, the surgical guide 1 can also provide additional osteotomy angles to accommodate the needs of the two osteotomy angles within the Z-shaped groove.

[0080] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A surgical guide, characterized in that, The surgical guide includes: The plate has at least three guide grooves that penetrate the plate and are interconnected and set at an angle, the angle being the osteotomy angle. A positioning part is provided on the edge of the plate body, and the positioning part is used to position the relative position between two bone blocks after osteotomy; At least three of the guide grooves intersect at one end to form at least two osteotomy angles, and the plate is provided with at least two positioning parts, with each osteotomy angle corresponding to one of the positioning parts; The positioning part includes a first positioning surface and a second positioning surface, which are respectively used to fit with two bone blocks to determine the relative position between the two bone blocks after osteotomy. The edge of the plate is provided with a groove; one of the first positioning surface and the second positioning surface is the groove surface inside the groove, and the other is the surface on the plate adjacent to the groove. The surface and the groove surface have a preset distance and face the same direction.

2. The surgical guide as described in claim 1, characterized in that, The first positioning surface and the second positioning surface are arranged parallel to each other or have a preset angle, and there is a preset distance between the first positioning surface and the second positioning surface.

3. The surgical guide as described in claim 2, characterized in that, The groove extends along the edge of the plate and forms a long, rectangular structure. One of the first positioning surface and the second positioning surface is a side surface in the plate body that corresponds to the long side of the groove, and the other is a groove surface in the groove that faces the same direction as the side surface.

4. The surgical guide as described in any one of claims 1-3, characterized in that, At least one of the three guide grooves is a reference groove, and any one of the remaining guide grooves forms the osteotomy angle with the reference groove.

5. The surgical guide as described in any one of claims 1-3, characterized in that, The plate has a polygonal structure, and the multiple positioning parts are located on different sides of the plate.

6. The surgical guide as described in any one of claims 1-3, characterized in that, The plate has markings that are used to determine the correspondence between the positioning part, the guide groove, and the corresponding osteotomy angle.

7. A method for manufacturing a surgical guide, characterized in that, The manufacturing method is used to manufacture a surgical guide as described in any one of claims 1-6, the manufacturing method comprising: Obtain medical imaging data of the bone to be osteotomized; Obtain osteotomy information determined based on the medical imaging data. The osteotomy information includes the location of the osteotomy, the osteotomy angle, and the relative position of the two bone fragments after the osteotomy. The relative position of the two bone fragments is related to the location of the osteotomy and the osteotomy angle. Obtain the osteotomy angle and corresponding guide groove of the surgical guide plate determined based on the position and angle of the osteotomy, and the positioning part determined based on the relative position of the two bone blocks after the osteotomy; The surgical guide plate is designed based on the guide groove and the positioning part.

Images