3D printing osteotomy orthopedic surgery guide plate

Abstract

The utility model relates to orthopedics orthopedic equipment technical field, especially 3D printing osteotomy orthopedic surgery guide plate. Including osteotomy guide plate, the both sides of osteotomy department are equipped with the positioning part and show T character, the one side of positioning part is arc and is attached to the board, and the other side of positioning part is equipped with first locating hole groove and second locating hole groove, and is equipped with locating hole in first locating hole groove and second locating hole groove, and locating hole penetrates positioning part, and first locating hole groove and second locating hole groove are equipped with drill guide rail, and the through hole groove is set up in the drill guide rail, and the through hole groove is equipped with kirschner wire, and the osteotomy groove is set up on the osteotomy department, and the osteotomy groove penetrates osteotomy department. The above structure only needs the arc and is attached to the board of positioning part and is attached to the orthopedic bone, and is fixed through first locating hole groove and second locating hole groove. And through the osteotomy groove guide imports osteotomy device, and the limiting and depth limiting effect of osteotomy groove effectively control osteotomy direction and osteotomy depth, effectively reduce the operation difficulty of doctor.

Description

Technical Field

[0001] This utility model relates to the field of orthopedic orthopedic equipment technology, and in particular to a 3D printed osteotomy orthopedic surgical guide. Background Technology

[0002] Currently, in clinical orthopedic reshaping surgery, the lack of quantifiable tools during osteotomy often leads to the cutting of auxiliary tools, causing unnecessary debris and affecting intraoperative irrigation. The location, angle, and amount of osteotomy are often determined solely by measurements and markings from two-dimensional imaging images, with intraoperative osteotomy relying on the surgeon's experience. This results in unsatisfactory surgical outcomes, or even surgical failure. Inappropriate osteotomy requiring re-osteotomy often fails to achieve ideal anatomical alignment, prolonging the operation time, and impairing postoperative healing at the osteotomy site. Most commercially available products are primarily made of photosensitive resin or polylactic acid, materials that are not heat-resistant, and most medical institutions use high-temperature sterilization methods for preoperative treatment.

[0003] This provides customized, quantitative tools for osteotomy and reshaping surgery, precisely controlling the osteotomy angle, accurately adjusting joint alignment, reducing surgery time, effectively preventing debris generation, and not affecting intraoperative irrigation. It is made of high-temperature resistant materials, facilitating sterilization in medical institutions. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by adopting the following technical solution: A 3D-printed osteotomy and orthopedic surgical guide plate includes an osteotomy guide plate, which includes an osteotomy main plate, a drill guide rail, a first positioning slot, a second positioning slot, an osteotomy slot, an osteotomy part, and a positioning part. The osteotomy part has positioning parts on both sides in a T-shape. One side of the positioning part is an arc-shaped fitting plate, and the other side of the positioning part has a first positioning slot and a second positioning slot. Positioning holes are provided in the first and second positioning slots, penetrating the positioning part. A drill guide rail is fitted inside the first and second positioning slots, and a through-hole slot is formed on the drill guide rail, into which a Kirschner wire is fitted. An osteotomy groove is formed on the osteotomy part, penetrating the osteotomy part. This structure only requires the arc-shaped fitting plate of the positioning part to fit against the bone to be corrected and be fixed through the first and second positioning slots. The osteotomy device is then introduced through the osteotomy groove. The limiting and depth-limiting function of the osteotomy groove effectively controls the osteotomy direction and depth, significantly reducing the difficulty of the surgeon's operation.

[0005] The osteotomy guide plate also includes a sheath, which consists of an insertion sleeve and a protective plate. The insertion sleeve is a hollow tube with a protective plate at one end. The insertion sleeve is inserted into the osteotomy groove, and the protective plate extends out of the groove. The hollow tube-shaped insertion sleeve is used for the osteotomy saw to pass through, and the protective plate holds and fits the osteotomy saw, preventing direct contact between the osteotomy saw and the osteotomy guide plate. The sheath provides protection and extends the service life of the osteotomy guide plate, while the insertion method facilitates disassembly and replacement.

[0006] It also includes an orthopedic limiting block, which comprises a limiting block, a wedge-shaped clamp, and a limiting stop. The limiting block is connected to the wedge-shaped clamp via the limiting stop. The limiting stop is located on the side of the limiting block and protrudes from the outer edge of the limiting block. The wedge-shaped clamp is inserted into the osteotomy suture to achieve orthopedic correction, and the limiting stop restricts and stops the insertion position.

[0007] It also includes a protective sleeve, located outside the wedge-shaped head, fitting snugly against it. The wedge-shaped head has a fixing hole, and the protective sleeve has a locking tab. The fixing hole and locking tab are positioned correspondingly. One end of the locking tab is fixedly connected to the protective sleeve, while the other end is free and can be bent into the fixing hole to form a snap-fit. The limiting block, limiting baffle, and wedge-shaped head are made of PLA, ABS, or PETG polymer materials; the protective sleeve is made of metal. The limiting baffle and wedge-shaped head can be 3D additively printed for better ergonomics, and the material processing is convenient. The protective sleeve is a detachable structure, improving the strength of the wedge-shaped head. The limiting block and limiting baffle are made of polymer material using 3D additive manufacturing. They have an integrally formed limiting baffle, and the wedge-shaped head at the front end of the limiting block can be used to restrict the limiting block from further extending after it has been opened to a predetermined corrective angle, thus ensuring the accuracy of joint alignment adjustment. The first positioning slot is parallel to the osteotomy slot; the second positioning slot is inclined, and the extension line of the opening direction of the second positioning slot intersects the extension line of the opening direction of the first positioning slot. The drill guide is made of metal and is embedded in the first and second positioning slots of the osteotomy main plate through an interference fit, forming a detachable connection with the osteotomy main plate. This can be used to prevent the Kirschner wire from turning the osteotomy main plate when drilling into the bone to be corrected, and to avoid the debris of the osteotomy main plate falling into the wound and affecting the intraoperative irrigation effect. The drill guide has various specifications to accommodate various sizes of Kirschner wires. The appropriate size of Kirschner wire can be selected for fixation according to the different sizes of the bone to be corrected. After the drill guide is embedded in the first and second positioning slots respectively, the top surface of the drill guide is 1-2mm higher than the top surface of the first and second positioning slots, which can facilitate the replacement of different specifications of the drill guide to meet the needs of the operation, and also prevent the Kirschner wire from turning the osteotomy main plate during the operation. The arc-shaped fitting plate of the positioning part fits into the bone to be corrected, the osteotomy saw is inserted into the osteotomy groove, the osteotomy saw cuts the bone to be corrected, the cutting point is inserted into the correction limiting block, and the wedge-shaped card head fits into and opens the cutting point.

[0008] The sheath and drill bit guide are made of metal.

[0009] The osteotomy guide plate is equipped with patient information identifiers, medical institution information identifiers, and direction markers. The patient information identifier is a unique identifier for the patient at a specific medical institution; the medical institution information identifier is a unique identifier for the medical institution; and the direction markers are intraoperative guidance markers. The sheath is made of medical-grade metal and is embedded in the osteotomy slot of the osteotomy main plate through an interference fit. It is used to prevent the medical oscillating saw from cutting the osteotomy main plate and can also guide the osteotomy process. After the sheath is embedded in the osteotomy slot, the top surface of the sheath is 1-2 mm higher than the top surface of the osteotomy slot, which can prevent the medical oscillating saw from cutting the osteotomy main plate during the operation. The limiting block and limiting baffle are made of polymer material and are manufactured using laser sintering or photopolymerization stereolithography additive manufacturing process. They have an integrally formed limiting baffle. The unique angle design at the front end of the limiting block can be used to restrict the orthopedic limiting block from going deeper after it has been stretched to a predetermined orthopedic angle, thereby ensuring the accuracy of joint force line adjustment. The osteotomy guide plate and the orthopedic limiting block are used together. First, the osteotomy guide plate is used to assist the medical oscillating saw in making precise osteotomy. After the osteotomy guide plate is removed, the orthopedic limiting block is inserted into the osteotomy gap to open the osteotomy gap at a predetermined angle, so as to achieve the effect of precisely adjusting the joint force line. The protective sleeve is made of medical-grade metal and manufactured using traditional machining techniques. Due to its thin sheet design, it has a certain degree of extensibility and plasticity. By plastically bending along the seams on the surface of the protective sleeve, barbs can be formed to fit into the square holes on the side of the limiting block, ultimately forming a plastic wrap. This can be used to prevent the bone fracture surface from scratching the limiting block and to avoid generating debris that could affect the intraoperative irrigation effect.

[0010] The beneficial effects of this invention lie in the combined use of the osteotomy guide plate and the corrective limiting block. First, the osteotomy guide plate is used to assist the medical oscillating saw in precise osteotomy. After removing the osteotomy guide plate, the corrective limiting block is inserted into the osteotomy gap, opening the gap at a predetermined angle to precisely adjust the joint alignment. This provides a customized quantitative tool for osteotomy and corrective surgery, precisely controlling the osteotomy angle, accurately adjusting the joint alignment, reducing surgical time, effectively preventing debris generation, and not affecting intraoperative irrigation. It is made of high-temperature resistant material, facilitating sterilization in medical institutions. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the osteotomy guide plate. Figure 2 This is a schematic diagram of the orthopedic limiting block. Figure 3 This is a step-by-step usage diagram of the present invention; Figure 4 This is a schematic diagram showing the connection between the osteotomy guide plate and the bone to be corrected. Figure 5 A schematic diagram showing the connection between the osteotomy guide plate and the cutting saw during cutting. Figure 6 This is a sectional view showing the connection between the osteotomy guide plate and the bone to be corrected. Figure 7 Top view of the connection between the osteotomy guide plate and the bone to be corrected; Figure 8 Schematic diagram of the first positioning hole groove and the second positioning hole groove; Figure 9 This is a diagram showing the marked locations of the osteotomy guide plate; Figure 10 Side view of the orthopedic limiting block with protective sleeve installed; Figure 11 This is a schematic diagram of the structure of the curved bonding panel; Figure 12 This is a schematic diagram of the latching piece before assembly; Figure 13 A schematic diagram showing the buckle piece after assembly and bending; Figure 14 This is a schematic diagram of the sheath structure.

[0012] In the diagram: osteotomy guide plate 1, osteotomy main plate 101, sheath 102, drill guide rail 103, first positioning slot 104, second positioning slot 105, osteotomy slot 106, patient information identifier 107, medical institution information identifier 108, direction identifier 109, orthopedic limiting block 2, limiting block 201, protective sleeve 202, limiting baffle 203. Detailed Implementation

[0013] A 3D-printed osteotomy and orthopedic surgical guide plate includes an osteotomy guide plate 1. The osteotomy guide plate 1 includes an osteotomy main plate 101, a drill guide rail 103, a first positioning slot 104, a second positioning slot 105, an osteotomy slot 106, an osteotomy part, and a positioning part. The osteotomy part has positioning parts on both sides in a T-shape. One side of the positioning part is an arc-shaped bonding plate, and the other side of the positioning part is provided with a first positioning slot 104 and a second positioning slot 105. The first positioning slot 104 and the second positioning slot 105 are provided with positioning holes that penetrate the positioning part. A drill guide rail 103 is installed in the first positioning slot 104 and the second positioning slot 105. A through slot is opened on the drill guide rail 103, and a Kirschner wire is installed in the through slot. An osteotomy slot 106 is opened on the osteotomy part and penetrates the osteotomy part.

[0014] The osteotomy guide plate 1 also includes a sheath 102, which is divided into an insertion sleeve and a protective plate. The insertion sleeve is a hollow tube, and a protective plate is provided at one end of the insertion sleeve. The insertion sleeve of the sheath 102 is inserted into the osteotomy groove 106, and the protective plate extends out of the osteotomy groove 106. The hollow tube-shaped insertion sleeve is used for the osteotomy saw to pass through, and the protective plate blocks and fits the osteotomy saw so that the osteotomy saw does not contact the osteotomy guide plate 1.

[0015] The first positioning slot 104 is parallel to the osteotomy slot 106; the second positioning slot 105 is inclined, and the extension line of the opening direction of the second positioning slot 105 intersects the extension line of the opening direction of the first positioning slot 104. The arc-shaped fitting plate of the positioning part fits against the bone to be corrected, the osteotomy saw passes through the osteotomy slot 106, the osteotomy saw cuts the bone to be corrected, the cutting point is inserted into the corrective limiting block 2, and the wedge-shaped clamping head fits and opens the cutting point. The sheath 102 and the drill guide rail 103 are made of metal. The osteotomy guide plate 1 is provided with patient information label 107, medical institution information label 108 and direction label 109. Figure 8 and 9 The diagram shows the locations of patient information identifier 107, medical institution information identifier 108, and direction identifier 109. The identifier information can be marked by pasting labels or by additive printing. The content of the identifier information, pasting and printing methods will not be described here.

[0016] It also includes an orthopedic limiting block 2, which comprises a limiting block 201, a wedge-shaped clamping head, and a limiting baffle 203. The limiting block 201 is connected to the wedge-shaped clamping head via the limiting baffle 203. The limiting baffle 203 is located on the side of the limiting block 201 and protrudes from the outer edge of the limiting block 201. It also includes a protective sleeve 202, located outside the wedge-shaped clamping head. The protective sleeve 202 fits snugly against the wedge-shaped clamping head. A fixing hole is provided on the wedge-shaped clamping head, and a locking tab is provided on the protective sleeve 202. The fixing hole and the locking tab are positioned correspondingly. One end of the locking tab is fixedly connected to the protective sleeve 202, and the other end is a free end that can be bent into the fixing hole to form a locking state. The limiting block 201, the limiting baffle 203, and the wedge-shaped clamping head are made of PLA, ABS, or PETG polymer materials; the protective sleeve 202 is made of metal.

[0017] A 3D-printed osteotomy and orthopedic surgical guide includes an osteotomy guide and an orthopedic limiting block. The osteotomy guide and the orthopedic limiting block work together. First, the osteotomy guide is used to assist a medical oscillating saw in precise osteotomy. After the osteotomy guide is removed, the orthopedic limiting block is inserted into the osteotomy gap to open the gap at a predetermined angle, achieving precise adjustment of the joint alignment. The osteotomy guide includes an osteotomy main plate, a sheath, a drill guide rail, a first positioning slot, a second positioning slot, an osteotomy groove, patient information markings, medical institution information markings, and direction markings. The osteotomy main plate is made of high-temperature resistant nylon. Medical imaging software is used to reverse engineer 3D model the acquired CT data, and the reverse model is then imported into industrial design software. The design is optimized and manufactured using laser sintering or photopolymerization additive manufacturing processes. This ensures that the bottom surface of the osteotomy guide plate matches the shape of the bone to be corrected, achieving a tight fit and guaranteeing accurate osteotomy positioning. The osteotomy guide plate has a first positioning slot, a second positioning slot, and an osteotomy slot. The first positioning slot is parallel to the osteotomy slot, preventing the medical oscillating saw from intersecting with the Kirschner wire when cutting the bone, thus avoiding obstruction of osteotomy. The second positioning slot intersects with the osteotomy slot, forming a triangular structure with the first positioning slot without hindering the osteotomy operation, ensuring the osteotomy guide plate is firmly fixed and does not easily slip or loosen. A sheath is embedded in the osteotomy slot to guide the osteotomy angle during the operation, ensuring the accuracy of the osteotomy. The sheath is made of medical-grade metal and manufactured using traditional machining techniques. Utilizing the difference in rigidity between metal and polymer materials, it is embedded into the osteotomy slot of the osteotomy main plate through an interference fit. This not only prevents the medical oscillating saw from cutting the osteotomy main plate but also guides the osteotomy process, preventing debris from the osteotomy main plate from falling into the wound and affecting the intraoperative irrigation effect, and also allowing for precise osteotomy. After the sheath is embedded in the osteotomy slot, the top surface of the sheath protrudes 1-2 mm above the top surface of the osteotomy slot, which can prevent the medical oscillating saw from cutting the osteotomy main plate during the operation. The drill guide is made of metal and manufactured using traditional machining processes. Utilizing the difference in rigidity between metal and polymer materials, it is embedded into the positioning hole of the osteotomy main plate through an interference fit, forming a detachable connection with the osteotomy main plate. This prevents the Kirschner wire from turning the osteotomy main plate when drilling into the bone to be corrected, avoiding the fall of osteotomy main plate debris into the wound and affecting the intraoperative irrigation effect. The drill guide is available in various specifications to accommodate Kirschner wires of various sizes. The appropriate Kirschner wire size can be selected for fixation according to the different sizes of the bone to be corrected, making the surgical planning more diverse. After the drill guide rails are respectively embedded in the first positioning slot and the second positioning slot, the top surface of the drill guide rails is 1-2mm higher than the top surface of the first positioning slot and the second positioning slot. This makes it easy to replace the drill guide rails with different specifications to meet the needs of the operation, and also prevents the Kirschner wire from drilling into the osteotomy plate during the operation. The patient information identifier is a unique identifier for a patient at a specific medical institution, preventing misuse, enhancing identification, and enabling customization; the medical institution information identifier is a unique identifier for the medical institution, assisting in accurate logistics delivery; the directional identifier serves as an intraoperative guidance identifier, helping to save surgical time and facilitate intraoperative positioning. The orthopedic limiting block includes a limiting block, a protective sleeve, and a limiting baffle. The limiting block and the limiting baffle are made of high-temperature resistant nylon polymer material and are manufactured using laser sintering or photopolymerization stereolithography additive manufacturing processes. The limiting baffle is integrally formed on the limiting block. The unique angle design at the front end of the limiting block can be used to restrict the orthopedic limiting block from going deeper after it has been stretched to a predetermined orthopedic angle, thereby ensuring the accuracy of joint alignment adjustment. The protective sleeve is made of medical-grade metal and manufactured using traditional machining processes. Due to its thin sheet design, it has a certain degree of extensibility and plasticity. By plastically bending along the seams on the surface of the protective sleeve, barbs can be formed to fit into the square holes on the side of the limiting block, ultimately forming a plastic wrap. This can be used to prevent the bone fracture surface from scratching the limiting block and to avoid generating debris that could affect the intraoperative irrigation effect. The osteotomy guide plate consists of an osteotomy main plate, a sheath, and a drill guide rail. The osteotomy main plate is made by reverse engineering 3D modeling the acquired CT data using medical imaging software. The reverse model is then imported into industrial design software for design optimization. It is manufactured using laser sintering or photopolymerization stereolithography additive manufacturing processes to ensure that the bottom surface of the osteotomy main plate is consistent with the shape of the bone to be corrected, achieving a tight fit and ensuring accurate osteotomy position. The osteotomy guide plate has a first positioning slot, a second positioning slot, and an osteotomy groove. The first positioning slot is parallel to the osteotomy groove to prevent the medical oscillating saw from intersecting with the Kirschner wire when cutting the bone to be corrected, thus avoiding obstruction of the osteotomy. The second positioning slot intersects with the osteotomy groove, forming a triangular structure with the first positioning slot without hindering the osteotomy operation, ensuring the osteotomy guide plate is firmly fixed and does not easily slip or loosen. A sheath is embedded in the osteotomy groove to guide the osteotomy angle during the operation, ensuring the accuracy of the osteotomy and avoiding secondary osteotomy. The sheath and drill guide are made of medical-grade metal, which can effectively prevent the oscillating saw and Kirschner wire from cutting the osteotomy guide plate during the operation. The design incorporates various cutting techniques to prevent the formation of polymer debris that could affect intraoperative irrigation. The drill guide is available in multiple sizes to accommodate different Kirschner wires, allowing for the selection of the appropriate wire size for fixation based on the size of the bone to be corrected, thus enhancing surgical planning options. The corrective limiting block includes a limiting block, a protective sleeve, and a limiting baffle. The metal protective sleeve effectively prevents the bone fracture surface from scratching the limiting block and avoids the formation of polymer debris. The limiting block quantifies the osteotomy angle, precisely adjusting the joint alignment and reducing surgical time. The limiting baffle restricts the insertion depth of the corrective limiting block and also quantifies the corrective angle. The osteotomy motherboard has patient information and medical institution information identifiers, which serve as unique identifiers to quickly identify customized patients and prevent adverse events from occurring. like Figure 1-5 As shown, the 3D-printed osteotomy and orthopedic surgical guide of this utility model includes an osteotomy guide 1 and an orthopedic limiting block 2. The osteotomy guide 1 and the orthopedic limiting block 2 are used together. First, the osteotomy guide 1 is used to assist the medical oscillating saw in making precise osteotomy. After the osteotomy guide 1 is removed, the orthopedic limiting block 2 is inserted into the osteotomy gap to open the osteotomy gap at a predetermined angle, so as to achieve the effect of precisely adjusting the joint force line. The osteotomy guide plate 1 includes an osteotomy main plate 101, a sheath 102, a drill guide rail 103, a first positioning slot 104, a second positioning slot 105, an osteotomy slot 106, a patient information identifier 107, a medical institution information identifier 108, and a direction identifier 109. The osteotomy main plate 101 is manufactured by reverse engineering 3D modeling of the acquired CT data using medical imaging software, importing the reverse model into industrial design software for design optimization, and using laser sintering or photopolymerization stereolithography additive manufacturing process to make the bottom surface of the osteotomy main plate 101 consistent with the shape of the bone to be corrected, achieving a tight fit and ensuring accurate osteotomy position. The osteotomy guide plate 101 has a first positioning slot 104, a second positioning slot 105, and an osteotomy slot 106. The first positioning slot 104 is parallel to the osteotomy slot 106, which can prevent the medical oscillating saw from crossing the Kirschner wire when cutting the bone to be corrected, thus avoiding obstruction of osteotomy. The second positioning slot 105 intersects with the osteotomy slot 106, forming a triangular structure with the first positioning slot without hindering the osteotomy operation, so that the osteotomy guide plate 1 is firmly fixed and does not easily slip or loosen. A sheath 102 is embedded in the osteotomy slot 106, which can guide the osteotomy angle during the operation and ensure the accuracy of osteotomy. The sheath 102 is made of medical-grade metal and manufactured using traditional machining processes. Utilizing the difference in rigidity between metal and polymer materials, it is embedded into the osteotomy groove 106 of the osteotomy main plate 101 through an interference fit. This not only prevents the medical oscillating saw from cutting the osteotomy main plate 101, but also guides the osteotomy process. This not only prevents debris from the osteotomy main plate 101 from falling into the wound and affecting the intraoperative irrigation effect, but also allows for precise osteotomy. After the sheath 102 is embedded in the osteotomy groove 106, the top surface of the sheath 102 is 1-2 mm higher than the top surface of the osteotomy groove 106, which can prevent the surgical oscillating saw from cutting the osteotomy main plate 101 during the operation. The drill guide 103 is made of metal and manufactured using traditional machining processes. Utilizing the difference in rigidity between metal and polymer materials, it is embedded into the first positioning slot 104 and the second positioning slot 105 of the osteotomy main plate 101 through an interference fit, forming a detachable connection with the osteotomy main plate 101. This can be used to prevent the Kirschner wire from turning the osteotomy main plate 101 when drilling into the bone to be corrected, and to avoid debris from the osteotomy main plate 101 falling into the wound and affecting the intraoperative irrigation effect. The drill guide 103 has various specifications and can be adapted to various sizes of Kirschner wires. The appropriate size of Kirschner wire can be selected for fixation according to the different sizes of the bone to be corrected, making the surgical planning more diverse. After the drill guide 103 is embedded in the first positioning slot 104 and the second positioning slot 105 respectively, the top surface of the drill guide 103 is 1-2mm higher than the top surface of the first positioning slot 104 and the second positioning slot 105. This makes it easy to replace the drill guide 103 with different specifications to meet the needs of the operation, and also prevents the Kirschner wire from drilling into the osteotomy main plate 101 during the operation. The patient information identifier 107 is a unique identifier for a patient at a specific medical institution, which can prevent misuse, enhance identification, and enable customization; the medical institution information identifier 108 is a unique identifier for a medical institution, which can assist in accurate logistics delivery; the direction identifier 109 is an intraoperative indicator, which helps to save surgical time and facilitates intraoperative positioning. The orthopedic limiting block 2 includes a limiting block 201, a protective sleeve 202, and a limiting baffle 203. The limiting block 201 and the limiting baffle 203 are made of polymer material and are manufactured using laser sintering or photopolymerization stereolithography additive manufacturing processes. The limiting baffle 203 is integrally formed on the limiting block 201. The unique angle design at the front end of the limiting block 201 can be used to limit the orthopedic limiting block 2 from going deeper after it has been opened to a predetermined orthopedic angle, thereby ensuring the accuracy of joint force line adjustment. The protective sleeve 202 is made of medical-grade metal and manufactured using traditional machining processes. Due to its thin sheet design, it has a certain degree of extensibility and plasticity. By plastically bending along the seams on the surface of the protective sleeve 202, barbs can be formed to fit into the square holes on the side of the limiting block 201, ultimately forming a plastic wrap. This can be used to prevent the bone fracture surface from scratching the limiting block 201 and to avoid the generation of debris, which would affect the irrigation effect during the operation. Clinical usage: (a) Cleaning This product has undergone a pre-wash to remove surface impurities and a fine wash to control initial contamination bacteria and insoluble particles before leaving the factory. The cleaning process has also been validated. If there are special requirements, only the fine wash can be performed according to the following operating method. If there are no special requirements, this step can be skipped: 1) Add sufficient purified water to the ultrasonic cleaner, ensuring that the purified water covers 2 / 3 of the chamber and completely submerges the product by 1-2 cm; 2) Set the temperature to 35℃ and the ultrasonic cleaning time to 10 minutes, then begin heating. 3) Turn on the heating switch and wait for the water temperature to rise to 35±2℃ and stabilize for 1 minute; 4) Tear open the inner packaging, put the product into the ultrasonic cleaner, adjust the ultrasonic frequency to the maximum (MAX), turn on the ultrasonic cleaning switch, and ultrasonically clean for 10 minutes. 5) After washing, hang to drain. Note: The hospital should first confirm through cleaning that the cleaning equipment is in good working order and operate according to the requirements of the cleaning equipment manufacturer; (ii) Sterilization / Disinfection This product is supplied non-sterile and must be sterilized / disinfected by the medical institution itself. Sterilization requires unpacking. 1) Place the washed and drained products into a high-pressure steam sterilizer for sterilization; 2) The product is sterilized using a downdraft pressure steam sterilizer. The sterilization parameters are as follows: 3) After sterilization, move the product to the designated area for use in surgery; Note: The hospital should first confirm the sterilization process. The sterilization equipment should be in good working order and operated in accordance with the manufacturer's requirements.

[0018] (III) Operation: 1) Create an opening in the bone area to be corrected, and choose a surgical approach in areas with thin and sparse nerves, blood vessels, fat, and muscles; 2) Insert the osteotomy guide plate 1 through the wound and attach it to the bone to be corrected. Slide it slightly along the axis of the bone to be corrected to ensure that the osteotomy guide plate 1 fits tightly to the bone to be corrected. Press it with a hand wearing sterile gloves to prevent it from falling off. 3) Screw the Kirschner wire into the bone to be corrected along the guide hole of the drill guide 103 until the tip of the Kirschner wire protrudes from the opposite bone surface or only drills through one side of the bone surface, so that the osteotomy guide plate 1 is fixed on the bone to be corrected, and release the pressing palm. 4) Use strong forceps to cut the Kirschner wires that intersect with the osteotomy groove 106, ensuring that the plane of the cut is lower than the highest point of the osteotomy groove 106 to be corrected; 5) Insert the oscillating saw into the sheath 102 of the osteotomy guide plate 1 and cut the bone to be corrected to a certain depth along the inner wall of the sheath 102. 6) First, remove the Kirschner wires from the body, then remove the osteotomy guide plate 1 from the body; 7) Insert the orthopedic limiting block 2 into the bone incision until the limiting point of the orthopedic limiting block 2 extends across both sides of the bone incision; 8) After the bone incision to be corrected is fixed with the bone plate, the corrective limiting block 2 is removed; 9) Suture the wound, and the surgery is complete.

Claims

1. A 3D-printed osteotomy and orthopedic surgical guide, characterized in that... The osteotomy guide plate (1) includes an osteotomy main plate (101), a drill guide rail (103), a first positioning slot (104), a second positioning slot (105), an osteotomy slot (106), an osteotomy section, and a positioning section. The osteotomy section has positioning sections on both sides in a T-shape. One side of the positioning part is an arc-shaped bonding plate, and the other side of the positioning part is provided with a first positioning slot (104) and a second positioning slot (105). The first positioning slot (104) and the second positioning slot (105) are provided with positioning holes that penetrate the positioning part. Drill guide rails (103) are installed in the first positioning slot (104) and the second positioning slot (105). Through slots are opened on the drill guide rails (103), and Kirschner wires are installed in the through slots. Osteotomy slots (106) are opened on the osteotomy part and penetrate the osteotomy part.

2. The 3D-printed osteotomy and orthopedic surgical guide according to claim 1, characterized in that... The osteotomy guide plate (1) also includes a sheath (102), which is divided into a plug sleeve and a protective plate. The plug sleeve is a hollow tube, and a protective plate is provided at one end of the plug sleeve. The plug sleeve of the sheath (102) is inserted into the osteotomy groove (106), and the protective plate extends out of the osteotomy groove (106). The hollow tube plug sleeve is used for the osteotomy saw to pass through, and the protective plate blocks and fits the osteotomy saw so that the osteotomy saw does not contact the osteotomy guide plate (1).

3. The 3D-printed osteotomy and orthopedic surgical guide according to claim 2, characterized in that... It also includes an orthopedic limiting block (2), which includes a limiting block (201), a wedge-shaped head and a limiting baffle (203). The orthopedic limiting block (2) is connected to the wedge-shaped head through the limiting baffle (203). The limiting baffle (203) is located on the side of the orthopedic limiting block (2) and protrudes from the outer edge of the limiting block (201).

4. The 3D-printed osteotomy and orthopedic surgical guide according to claim 3, characterized in that... It also includes a protective sleeve (202), which is located outside the wedge-shaped head. The protective sleeve (202) fits into the wedge-shaped head. A fixing hole is provided on the wedge-shaped head, and a locking piece is provided on the protective sleeve (202). The fixing hole and the locking piece are positioned correspondingly. One end of the locking piece is fixedly connected to the protective sleeve (202), and the other end of the locking piece is a free end. The free end can be bent into the fixing hole to form a snap-fit ​​state.

5. The 3D-printed osteotomy and orthopedic surgical guide according to claim 3, characterized in that... The limiting block (201), limiting baffle (203) and wedge-shaped card head are made of PLA, ABS or PETG polymer materials; the protective sleeve (202) is made of metal material.

6. The 3D-printed osteotomy and orthopedic surgical guide according to claim 1, characterized in that... The first positioning hole groove (104) is arranged parallel to the osteotomy groove (106); the second positioning hole groove (105) is arranged at an angle, and the extension line of the opening direction of the second positioning hole groove (105) intersects the extension line of the opening direction of the first positioning hole groove (104).

7. A 3D-printed osteotomy and orthopedic surgical guide according to claim 3, characterized in that... The arc-shaped fitting plate of the positioning part fits with the bone to be corrected, the osteotomy saw is inserted into the osteotomy groove (106), the osteotomy saw cuts the bone to be corrected, the cutting point is inserted into the correction limiting block (2), and the wedge-shaped card head fits and opens the cutting point.

8. A 3D-printed osteotomy and orthopedic surgical guide according to claim 2, characterized in that... The sheath (102) and drill bit guide (103) are made of metal.

9. A 3D-printed osteotomy and orthopedic surgical guide according to claim 1, characterized in that... The osteotomy guide plate (1) is provided with patient information label (107), medical institution information label (108) and direction label (109).

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