57 results about "Osteotomy guide" patented technology

The invention discloses a hip replacement lower limb equal-length control system and method based on individualized three-dimensional modeling. The hip replacement lower limb equal-length control system comprises a data preprocessing module, a medical image processing module, a dynamic implantation simulation module, a biomechanical analysis module, a guide plate generation module and a postoperative evaluation module. The method comprises the following steps: acquiring bilateral lower limb CT data and carrying out multi-modal registration; segmenting a skeleton structure by using a deep learning model, and constructing a three-dimensional model; reconstructing a complete sphere through affected side femoral head multi-plane fitting, and determining a target femoral head center in combination with uninjured side mirror image data; dynamically adjusting the space posture of the prosthesis to enable the center of the prosthesis head to coincide with the center of the target; performing finite element analysis to optimize stress distribution; and generating a 3D printing file of the individualized osteotomy guide plate and the positioning pointer. According to the method, preoperative accurate planning, intraoperative real-time control and postoperative quantitative evaluation are achieved, the operation precision is effectively improved, and complications of unequal lengths of lower limbs are avoided.

Instruments, devices, systems and methods for maintaining, correcting and / or fusing joint deformities are disclosed. Guide systems including an alignment block and a cut guide removably coupled to the alignment block. Osteotomy guides including an alignment block and a cut guide removably coupled to the alignment block. Osteotomy guides including a body, a first alignment member coupled to and extending away from a superior surface of the body, and a second alignment member coupled to and extending away from an inferior surface of the body. Methods of assembling and using the osteotomy guides and systems for maintaining, correcting and / or fusing joint deformities are also disclosed.

This invention discloses a guide plate device for spinal osteotomy and correction. Each first support member is fixed to the first guide plate body for connection with screws. The first guide plate body has a first window for locating the spinal laminectomy area. A rib resection groove is formed at the edge of the first window to determine the rib resection area. There are two rib resection grooves, arranged opposite each other on both sides of the first window. Each second support member is fixed to the second guide plate body for connection with screws. The second guide plate body has a second window for locating the pedicle osteotomy guide plate's resection area. There are two second windows, arranged opposite each other. The spinal laminectomy guide plate and the pedicle osteotomy guide plate share a single screw assembly. This invention avoids errors in judging the resection area based on human experience, and also avoids hand-holding the guide plate and guide plate position deviation during surgery.

The application provides an osteotomy guiding device, comprising a measuring rod with a first measuring scale arranged along the axial direction of the measuring rod; a first clamping structure and a second clamping structure, the second clamping structure being adjustably arranged on the measuring rod; wherein the first clamping structure and the second clamping structure each comprise a fixing column arranged along the vertical direction, and an upper clamping jaw, a lower clamping jaw and a first locking member arranged on the fixing column, the upper clamping jaw and the lower clamping jaw being used for clamping a bone, the upper clamping jaw being movably arranged on the fixing column, the first locking member being used for locking the upper clamping jaw and the lower clamping jaw, a first osteotomy groove being arranged on the upper clamping jaw, a second osteotomy groove being arranged on the lower clamping jaw, and a mounting hole being further arranged on the upper clamping jaw, the measuring rod being arranged in the mounting hole of the first clamping structure and the mounting hole of the second clamping structure. The technical scheme of the application can effectively solve the problem of poor clamping stability of the osteotomy guiding tool in the related art, which leads to uneven osteotomy surface.

The positioning and guiding device is used for knee joint osteotomy and comprises an osteotomy guide plate, an adjusting assembly and a tracing frame, and the osteotomy guide plate is provided with an osteotomy guide groove used for guiding the direction of a saw blade; the adjusting assembly comprises a positioning base, a connector and three adjusting units, the positioning base is used for being connected with a target skeleton, the adjusting assembly is detachably connected with the osteotomy guide plate through the connector, and the three adjusting units are connected in series between the positioning base and the connector; the adjusting module is used for adjusting the position and posture of the osteotomy guide plate relative to a target bone so as to adjust the osteotomy amount, the forward-backward inclination angle and the inward-outward turning angle of an osteotomy surface, and the osteotomy surface is a plane to be guided and cut by the osteotomy guide groove; the tracing frame is used for being detachably connected with the osteotomy guide plate and indicating the position of the osteotomy guide plate in the operation space during connection. The defects of a traditional operation scheme and an operation scheme assisted by a mechanical arm in the prior art are overcome, positioning accuracy is guaranteed, and economical efficiency and reliability are both considered.

The utility model belongs to the field of medical instruments, and provides a tibia osteotomy guide plate which comprises a tibia osteotomy guide part, a tibia first attaching part and a tibia second attaching part, and the tibia osteotomy guide part is provided with a tibia osteotomy groove; the tibia first attaching part is connected with the tibia osteotomy guide part, and the tibia first attaching part is provided with a tibia first attaching face used for being attached to a tibia articular face; the second tibia attaching part is connected with the tibia osteotomy guiding part, the second tibia attaching part is provided with a second tibia attaching face used for being attached to the side face of the near end of the tibia, and the second tibia attaching part is provided with a tibia positioning hole; wherein a tibia side anti-skid structure is formed on the tibia first binding surface and / or the tibia second binding surface. The tibia osteotomy guide plate can be stably and accurately attached to the proximal end of the tibia.

This invention discloses a series of osteotomy guides for condylar osteotomy and their manufacturing method, relating to the field of medical device technology. The manufacturing method includes the following steps: creating a hard plaster dental model; establishing a virtual three-dimensional craniomaxillary model; acquiring virtual dentition data and replacing the dentition data in the three-dimensional model with virtual data; determining the target position of the mandibular bone segment; planning and virtually designing the osteotomy lines for coracoid and condylar resection, and virtually resecting the affected side's coracoid and condylar processes, and virtually designing the affected side's temporomandibular joint reconstruction to obtain a three-dimensional model of the affected side's ascending ramus; drawing the coracoid osteotomy guide; drawing the condylar osteotomy guide based on the mandibular morphology and osteotomy line position; and three-dimensionally printing the guide. By employing the above method, the guide can be fixed using its own shape, eliminating the need for additional fixation measures, reducing the difficulty of the procedure, shortening the operation time, and improving the accuracy of condylar resection; it also reduces the possibility of design errors caused by multi-data matching and fusion during the digital design process.

The utility model discloses a multifunctional guider for olecranal fracture and osteotomy, and belongs to the technical field of surgical auxiliary instruments. Comprising a guide fixing plate and a guide assembly, the guide fixing plate is provided with a positioning hole, a fixing hole and olecranon hooks, the guide fixing plate is an arc-shaped plate capable of being attached to the olecranon end of the ulna, the positioning hole and the fixing hole transversely and longitudinally penetrate through the guide fixing plate respectively, the two olecranon hooks are symmetrically arranged on the guide fixing plate, and the olecranon hooks are arranged on the guide assembly. A guide assembly is arranged on the guide fixing plate between the two olecranon hooks, the guide assembly comprises two sighting device sleeves, and a V-shaped osteotomy guide opening is further formed in the guide fixing plate; the olecranon fracture reduction and fixation device can assist in olecranon fracture reduction and fixation, accurate screw placement and needle insertion, meanwhile, accurate osteotomy can be achieved during olecranon osteotomy, follow-up reduction and fixation are completed, and good clinical prognosis is achieved.

An osteotomy guide to improve accuracy and efficiency of tibial plateau leveling osteotomy (TPLO) procedure. The guide comprises a concave shaped body with two ends on the opposite sides of the body wherein both ends are flushed, or one end is flushed and the other end is extended to form a flare. The flare also comprises a first end which may be extended from the first end of the guide. The guide also comprises a tibial plateau facing inner surface and an outer surface opposite the inner surface. The inner surface has a notch or groove or notches or grooves, which can be used as a landmark for tibial rotation. Further, the area enclosed by the two ends and inner and outer surfaces has plurality of orifices or fixation holes that are used for placing, securing and inserting mechanisms to secure the guide. The guide is durable, reusable or single-use and available in different sizes.

The utility model discloses a split tibial tubercle osteotomy guide plate, its characterized in that, including: tibial tubercle osteotomy guide plate, four oblique kirschner wires, handle pole, handle pole is installed tibial tubercle osteotomy guide plate, tibial tubercle osteotomy guide plate is equipped with four through -hole, and one oblique kirschner wire is inserted in each through -hole, tibial tubercle osteotomy guide plate still is equipped with a osteotomy groove, the utility model has simplified the surgical operation step, convenient to use, has extensive clinical application value.

The utility model discloses a lateral malleolus reconstruction osteotomy guide plate based on 3D printing, which belongs to the technical field of medical instruments and comprises a guide plate body. Through the arrangement of a fixing assembly, a first horizontal positioning groove, an indicating groove, a first inclined positioning groove, a first kirschner wire hole, a second horizontal positioning groove, a second inclined positioning groove, a second kirschner wire hole and a third kirschner wire hole, the first horizontal positioning groove, the first inclined positioning groove, the second horizontal positioning groove and the second inclined positioning groove cooperate with one another; a positioning surface can be provided for proximal fibula cutting, an osteotomy starting plane can be conveniently positioned by naked eyes in an operation through the indication groove, and then the proximal fibula can be fixed under the action of the fixing assembly, the first kirschner wire hole, the second kirschner wire hole and the third kirschner wire hole so as to ensure the stability of osteotomy. Therefore, a more stable and standard osteotomy environment is provided for fibula near-end wedge-shaped osteotomy, and stability, reliability and accuracy of osteotomy are ensured.

The present application relates to a kind of whole guide plate for bone graft sandwich bone grafting simultaneous implantation and manufacturing method, including the implantation guide plate of bone graft and implant, bone graft positioning finishing plate, tooth positioning device of bone area, osteotomy guide plate, tooth bone model of edentulous area, tooth bone model of bone area, the top of the implantation guide plate of bone graft and implant is connected with the bottom of bone graft positioning finishing plate, can be set with the several positioning points corresponding to bone area position in bone area by the guide drill needle hole on bone graft positioning finishing plate, can accurately transplant the bone graft taken to bone area;The osteotomy guide plate can be connected with tooth positioning device of bone area, also can be fixed in bone area according to the several positioning points;The present application can realize accurate, minimally invasive, safe to obtain intraoral autologous bone graft, can provide bone graft acquisition, finishing, implantation and implantation whole process guidance for surgeon, reduce the difficulty of operation, assist surgeon to complete the whole operation more accurately, efficiently, safely.

The invention relates to a spine osteotomy guide plate which comprises a first body, a second body, a plurality of first osteotomy guide needles and a plurality of second osteotomy guide needles, the first body is provided with a first osteotomy guide face, the second body is provided with a second osteotomy guide face, and the first osteotomy guide face and the second osteotomy guide face are used for osteotomy guide of a spine posterior column; the plurality of first osteotomy guide needles are detachably connected to the first body, extend along the first osteotomy guide surface and are used for increasing the guide distance of the first osteotomy guide surface; the plurality of second osteotomy guide needles are detachably connected to the second body, extend along the second osteotomy guide surface and are used for increasing the guide distance of the second osteotomy guide surface; wherein the first osteotomy guide needle and the second osteotomy guide needle both extend to the cortical bone position of the anterior column of the spine and are used for osteotomy guide of the anterior column of the spine.

This invention discloses an osteotomy guide plate, which includes a guide plate body, a first osteotomy blade groove, and a second osteotomy blade groove. A first side portion of the osteotomy guide plate forms the first and second osteotomy blade grooves with the guide plate body. The first osteotomy blade groove allows the osteotomy blade to move within a first plane after insertion, and the second osteotomy blade groove allows the osteotomy blade to move within a second plane after insertion. A first intersection line between the first plane and a reference plane forms a first preset angle with a second intersection line between the second plane and the reference plane. By including the first and second osteotomy blade grooves in the osteotomy guide plate, and with the first intersection line between the first plane and the reference plane and the second intersection line between the second plane and the reference plane forming a first preset angle, this application can limit the movement path of the osteotomy blade through the first and second osteotomy blade grooves. Furthermore, the two movement paths forming a first preset angle ensure that the movement path of the osteotomy blade matches the planned path, thereby improving the accuracy of osteotomy surgery.

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.

The present invention relates to a method for interactively designing via an implant design platform an artificial joint implant for hip arthroplasty and corresponding broaching and osteotomy guide apparatuses. The proposed implant design platform reconstructs the anatomy of the patient's pelvic and femoral bones in a 3D digital environment, and accordingly develops a patient-specific femoral implant stem as well as patient-specific surgical tools broach / rasp, osteotomy guide) used in total 10 hip arthroplasty. The patient-specific femoral implant stem developed may be optimized to ensure optimum mechanical performance for the patient, employing complex internal lattices that minimize stress shielding and advanced trabecular surfaces to promote osseointegration.

The utility model discloses a two-in-one knee joint additive manufacturing osteotomy guide plate which comprises a base body, a first fixing part and a second fixing part, the first fixing part and the second fixing part extend outwards from the two opposite sides of the base body, and each of the first fixing part and the second fixing part comprises an attaching part extending in the direction perpendicular to the base body. A first attaching surface and a second attaching surface are respectively formed on the corresponding attaching parts, the first attaching surface is adaptive to the shape of the human femur, and the second attaching surface is adaptive to the shape of the human tibia, so that the guide plate is simultaneously fixed on the human femur and the human tibia; and the osteotomy groove selectively faces the human femur and / or the human tibia. Compared with the prior art, the thighbone and the tibia of the human body can be cut out simultaneously, and the thighbone and tibia cutter is more practical.

The application discloses a 3D printing long bone osteotomy guide plate, and belongs to the technical field of orthopedic medical instruments. The 3D printing long bone osteotomy guide plate comprises a guide plate main body, the guide plate main body comprises a tumor fixing part, an osteotomy guiding part and an intermediate connecting part, the tumor fixing part and the osteotomy guiding part are fixedly connected through the intermediate connecting part, the tumor fixing part is in a spherical shape, the inner side of the tumor fixing part is in close contact with the outer surface of a long bone tumor, the osteotomy guiding part is clamped at the connecting position of the long bone and the long bone tumor, and the long bone tumor is cut off from the side of the osteotomy guiding part away from the tumor fixing part. The tumor fixing part is in close contact with the irregular shape of the tumor surface, the edge of the osteotomy guiding part is designed according to the direction of the osteotomy line, the guide plate is stably and closely combined with the bone and the tumor surface, sliding or misplacement is avoided, more accurate surgical positioning is provided for clinical doctors, the structure is simple, the operation is convenient, and the guide plate is suitable for large-scale popularization and application.

The utility model discloses a rapid prototyping osteotomy assembly, which belongs to the technical field of osteotomy guide plates and is characterized in that a designed bone fracture plate is used as a positioning basis, a guide column is connected onto the bone fracture plate by a connecting piece, and then the guide column and the osteotomy plate are attached by a heated and softened resin piece. The osteotomy plate and the guide column are fixed through the cooled and solidified resin piece, so that the relative positions of the osteotomy plate and the bone fracture plate are fixed, and accurate positioning of the osteotomy plate and the bone fracture plate is ensured.

The utility model relates to the technical field of osteotomy guide plates, in particular to a personalized knee joint unicompartmental arthroplasty osteotomy guide plate assembly which comprises an osteotomy guide plate body, a first fine adjustment body and a second fine adjustment body. A second fine adjustment area is formed in the osteotomy guide plate body in the direction perpendicular to the two first fine adjustment areas, a first moving groove is formed in each first fine adjustment area, a first fine adjustment body is installed in each moving groove, and a second fine adjustment body is installed in each second fine adjustment area; the adjacent bearing plates vertically move to accommodate the fixing needles at different positions, and the position of the saw blade is changed by matching with the movement of the saw bite plate, so that the influence on subsequent osteotomy operation caused by incapability of mounting an osteotomy guide plate due to position deviation of the fixing needles is avoided, accurate osteotomy is realized, and damage to bones is reduced; the problem that the installation of the osteotomy guide plate and the subsequent osteotomy operation are affected due to the fact that deviation is prone to occurring when fixing needles are punctured into different patients is solved.

The application discloses a positioning traction device for maxillofacial distraction osteogenesis, which comprises a distraction osteogenesis device corresponding to maxillofacial soft tissue and an osteotomy guide plate corresponding to teeth; one end of the distraction osteogenesis device corresponds to maxillofacial soft tissue, and the other end of the distraction osteogenesis device corresponds to maxillofacial osteotomy soft tissue, so as to position the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue; the osteotomy guide plate comprises a connecting part which is detachably connected with the distraction osteogenesis device, so as to position the spatial position of the distraction osteogenesis device. The application has the beneficial effect that in the device, the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue is fixed by the distraction osteogenesis device, and the spatial position of the distraction osteogenesis device is positioned by the connecting part of the osteotomy guide plate, so as to determine the relative position between the maxillofacial soft tissue and the maxillofacial osteotomy soft tissue, and the distraction osteogenesis operation can be finely controlled during the operation, so as to achieve the safe, fast, accurate and stable distraction osteogenesis operation purpose.

The invention discloses a thighbone tackle forming method based on 3D printing, and relates to the technical field of three-dimensional reconstruction. Comprising the steps of data collection, data preprocessing, three-dimensional model construction, parameter measurement, individualized reconstruction, osteotomy guide plate design and intraoperative forming, knee joint skeleton anatomy details are accurately obtained through spiral CT data collection, multi-step image processing and three-dimensional modeling, and the individualized reconstruction of the tackle groove based on patient individual anatomy is achieved. The curvature radius, the width, the depth and the articular surface angle of the reconstructed tackle groove are matched with the height of the patella, the operation accuracy is improved, and the problem that the patella is unstable due to maldevelopment of the tackle groove is solved; the design of the osteotomy guide plate realizes accurate conversion from virtual osteotomy to an actual operation, the binding surface of the osteotomy guide plate is tightly attached to the outer surface of the femur, the osteotomy channel is accurately matched with an osteotomy tool, the operation time is shortened, the design of the fixing holes ensures that the guide plate is stable, the osteotomy deviation risk is reduced, and the operation safety is improved.

The invention discloses a maxillary osteotomy positioning and fixing suite, and relates to the technical field of oral maxillofacial surgery orthognathic surgery, the maxillary osteotomy positioning and fixing suite comprises two osteotomy guide plates, an occlusal plate and a plurality of titanium battens, one end of each osteotomy guide plate is used for being clamped with a piriform nest, the other end of each osteotomy guide plate is used for being clamped with a zygomatic alveolar ridge, and the osteotomy guide plates are provided with a plurality of first nail holes; the first nail holes correspond to reserved nail holes of the maxillary bone so that the titanium nails can penetrate through the first nail holes and enter the reserved nail holes to fix the osteotomy guide plate in an operation area, the osteotomy guide plate is provided with an osteotomy groove, and the osteotomy groove is used for osteotomy operation to complete osteotomy and dissection of the maxillary bone; the biteplate is placed between the occlusal surfaces of the upper jaw and the lower jaw so as to guide the primary restoration of the osteotomy block; a plurality of second nail holes are formed in the titanium batten, and the second nail holes correspond to the reserved nail holes so that the titanium nails can penetrate through the second nail holes and enter the reserved nail holes to complete final reduction of the maxilla and fixation of the osteotomy block. The device is simple in structure and convenient to use, effectively reduces operation time and injury, and effectively improves operation efficiency.

The utility model discloses an ankle joint tibia support osteotomy guide plate which comprises a base body and an osteotomy groove arranged on the base body in a penetrating mode, a first base portion and a second base portion are formed on the upper side and the lower side of the osteotomy groove of the base body respectively, and a groove hole communicated with the osteotomy groove is formed in the second base portion. The direction perpendicular to the osteotomy guide plate is defined as the insertion direction of the osteotomy tool, and the osteotomy groove and the groove hole are obliquely formed in the insertion direction of the osteotomy tool. Compared with the prior art, the oblique osteotomy groove is formed so that the prosthesis can be obliquely implanted, on one hand, it can be guaranteed that the prosthesis is firmly fixed, on the other hand, the human body can be continuously stimulated through the oblique prosthesis, and the bone recovery speed is increased.

A guide for a bone cut comprises a guide base having an inner wall defining an opening. The inner wall has a plurality of detents distributed around the opening. The guide base has a proximal surface adapted to contact a skin of a person. An inner collar has one or more spring loaded devices extending outward from the inner collar in opposite directions. The inner collar is mountable with the spring loaded devices fitting within one or more of the plurality of detents. The inner collar has an inner wall defining a bore for receiving a cutting tool. The inner collar is configured to pivot the cutting tool about an axis, for cutting a bone. The axis lies along or parallel to a line along which the spring loaded devices lie.

The application discloses a kind of shank and foot ankle fixing device based on ankle surgery, it is related to medical auxiliary equipment technical field, including base assembly, shank support plate assembly, suspension fixing assembly, foot bottom baffle;Base assembly includes support base and traction base, the bottom end of traction base is equipped with the plug-in column of the plug-in connection with support base, shank support plate assembly is equipped on support base;Shank support plate assembly includes first support plate and second support plate, and rotation component is equipped between first support plate and second support plate and support base and traction base;Suspension fixing assembly includes installation crossbeam on traction base, and installation crossbeam is equipped with mobile unit and can fix shank and ankle osteotomy guide plate.The system can flexibly adjust the position of shank and ankle in operation, and can not be displaced in the operation process of manual or electric osteotomy tool operated by surgeon, to provide accurate navigation support for minimally invasive operation, improve the operability and accuracy of operation, reduce tissue trauma.

The utility model discloses a boning and nerve protection guide plate for lower jawbone sagittal splitting, and belongs to the field of medical instruments in surgical operations. Comprising a fixing part used for being fixed to the lower jawbone and a positioning part used for positioning the boning position, and the fixing part and the positioning part are integrally formed; a positioning hole is formed in the positioning part, an osteotomy guide surface and a nerve protection guide surface are arranged on the side wall of the positioning hole, and the osteotomy guide surface and the nerve protection guide surface are connected in a co-edge mode. Compared with the prior art, the guide plate can accurately position the deboning position of a patient, the operation difficulty is reduced, and accurate deboning is achieved; meanwhile, the deboning and nerve protection guide plate can also utilize the nerve protection guide surface to help the surgeon to control the position of the inferior alveolar nerve, so that the inferior alveolar nerve is prevented from being injured during deboning, and the safety of the surgery is improved.

The invention discloses a thighbone posterior condyle osteotomy measuring instrument which comprises a measuring scale, a sleeve, a supporting assembly and a locking assembly. The sleeve is arranged outside the measuring ruler in a sleeving mode, a clamping groove is formed in the sleeve, and one end of the inserting piece is inserted into the clamping groove; the supporting assembly is arranged at the bottom of the measuring ruler, and the supporting assembly and the inserting piece are arranged in the same direction; a lifting rod is arranged at the top of the measuring scale, and the locking assembly is installed on the outer wall of the sleeve and connected with the lifting rod. Therefore, the preset osteotomy height of the posterior condyle of the femur can be accurately measured, the accuracy of the osteotomy position is accurately evaluated before osteotomy, timely remedial measures are provided for an operator by perfecting a feedback mechanism of the four-in-one osteotomy guide plate, and finally the accuracy of osteotomy operation is improved.

The application discloses an HTO operation positioning osteotomy guiding auxiliary device, and relates to the technical field of medical instruments, which comprises components A, B and C, the components B and C can be assembled on the component A, the component A is connected with the component B, the component B is provided with at least one group of steel needle guiding holes for guiding the placement of a steel needle, a swing saw guiding hole parallel to the section where the steel needle guiding holes are located, and a coronal section osteotomy guiding hole with a 110° angle with the section where the steel needle guiding holes are located, the component A is connected with the component C, the component C comprises a first fixing part and a second fixing part, the first fixing part and the second fixing part are fixed to the tibia through a bone nail, the second fixing part is flipped relative to the first fixing part, and the first fixing part is provided with a protractor for measuring the flip angle of the second fixing part. The device can complete the whole HTO operation, including the placement of a steel needle, osteotomy, distraction and the installation of a steel plate, has low cost and is convenient to use.

The utility model discloses an osteotomy guide plate which comprises a guide plate base, a fixing nail, an osteotomy slotted vane and a slotted vane fixing piece. The guide plate base is provided with a fixing hole and a mounting groove, the fixing nail penetrates through the fixing hole to fix the guide plate base to a target skeleton, and the mounting groove is used for mounting an osteotomy slotted sheet; the slotted vane fixing part is detachably mounted on the guide plate base and can be switched between a first state and a second state relative to the guide plate base, the slotted vane fixing part in the first state is used for preventing the osteotomy slotted vane from being separated from the mounting groove, and the slotted vane fixing part in the second state allows the osteotomy slotted vane to be separated from the mounting groove. The problem that an osteotomy slotted vane of a traditional split type guide plate is prone to falling off due to vibration of a saw blade is solved, it is guaranteed that the operation process is conducted smoothly, and convenience is provided for doctors.