166 results about "Osteotomy guide" patented technology

The utility model provides a guide plate system for ulna osteotomy, which relates to the field of medical instruments and comprises an ulna steel plate and an osteotomy guide plate, first fixing holes are arranged at two ends of the ulna steel plate, a second fixing hole is arranged at one end of the ulna steel plate, and a first inclined hole is arranged on the inner side of the second fixing hole. The other end of the ulna steel plate is provided with a first strip-shaped hole and a second strip-shaped hole, and the first fixing hole and the second strip-shaped hole are both provided with steel nails used for fixing the ulna steel plate to the ulna. The osteotomy guide plate comprises a guide plate body and a connecting plate which can slide relatively, the guide plate body and the connecting plate are connected through a bolt, and the connecting plate is provided with a bolt piece used for fixing the connecting plate and the ulna steel plate. The surface of the connecting plate is provided with scale marks, the surface of the guide plate body is provided with a scale observation window for showing the scale marks and marked lines, and the side face of the guide plate body is provided with a beveling channel. The second fixing hole and the third fixing hole are provided with first fixing needles matched with the second fixing hole and the third fixing hole, the first strip-shaped hole and the fourth fixing hole are provided with second fixing needles matched with the first strip-shaped hole and the fourth fixing hole, the second fixing needles can slide in the first strip-shaped hole, the required osteotomy length can be adjusted according to the actual situation, and the application range is wider.

The invention discloses a multifunctional guider for olecranal fracture and osteotomy and an implementation method, and belongs to the technical field of surgical auxiliary instruments. The guider comprises a guide fixing plate, a guide sleeve and an adjustable guide assembly, a plurality of sets of positioning holes are formed in the head portion of the guide fixing plate, each set of positioning holes comprises two collinear positioning holes located in the two sides of the head portion of the guide fixing plate respectively, the guide sleeve is installed in one positioning hole in the head portion of the guide fixing plate, and the adjustable guide assembly is installed in the other positioning hole in the head portion of the guide fixing plate. An adjustable guide assembly with an adjustable angle is arranged at the tail of the guide fixing plate, the adjustable guide assembly comprises two sighting device sleeves which are parallel to each other, olecranon hooks are arranged on the guide fixing plate on the two sides of the adjustable guide assembly respectively, and an osteotomy guide opening and a plurality of fixing holes are formed in the middle of 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, accurate osteotomy can be achieved during olecranon osteotomy, follow-up reduction and fixation are completed, and good clinical prognosis is achieved.

The invention provides an ulna olecranon osteotomy guide plate, and relates to the technical field of medical instruments, the ulna olecranon osteotomy guide plate comprises a strip-shaped positioning plate, a fixing mechanism is mounted at the top of the strip-shaped positioning plate, an adjusting mechanism is mounted at the bottom of the strip-shaped positioning plate, a guide mechanism is mounted on the front side of the strip-shaped positioning plate, and the fixing mechanism comprises a positioning block; the positioning mechanism comprises a positioning block, protruding blocks are fixedly connected to the two sides of the positioning block, L-shaped first anti-disengaging blocks are fixedly connected to the positions, close to the top, of the two sides of the protruding blocks, first circular kirschner wire positioning holes are formed in the opposite side faces of the first anti-disengaging blocks in a penetrating mode, the adjusting mechanism comprises a moving block, and sliding adjusting blocks are fixedly connected to the two sides of the moving block; by means of the design, V-shaped osteotomy guiding can be effectively conducted on the ulna olecranon operation, and therefore the success rate of the ulna olecranon osteotomy operation is effectively guaranteed.

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.

The invention discloses a lower jaw sagittal splitting osteotomy positioning guide plate. Comprising a lower supporting type positioning guide plate, a middle occlusion positioning plate and an upper supporting type positioning guide plate which are sequentially connected through connecting rods, wherein the lower supporting type positioning guide plate is manufactured according to the outer side form of a lower jaw body part; the middle occlusion positioning plate is manufactured according to first molars and first premolars of a patient; the upper supporting type positioning guide plate is manufactured according to the outer side form of a lower jaw ramus; the upper supporting type positioning guide plate extends towards the inner side of the mandibular branch to form a mandibular branch inner side horizontal osteotomy guide rod set according to the position of a small tongue of the mandibular branch, and the lower end of the lower supporting type positioning guide plate is provided with a lower edge supporting type positioning guide plate manufactured according to the shape of the lower edge of the mandibular branch. The lower supporting type positioning guide plate is provided with a vertical osteotomy guide groove which is designed and manufactured according to an operation. According to the guide plate, the osteotomy and reduction process in the sagittal split operation of the lower jaw is more accurate through accurate design and positioning, inferior alveolar nerves can be effectively protected, the postoperative stability is improved, compared with the prior art, the safety, accuracy and efficiency of the operation are remarkably improved, risks in the operation are reduced, and the operation cost is reduced. The important clinical application value is realized.

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.

The invention discloses an HTO operation positioning osteotomy guiding auxiliary device, and relates to the technical field of medical instruments, the HTO operation positioning osteotomy guiding auxiliary device comprises a component A, a component B and a component C. The component B and the component C are assembled on the component A in a replaceable mode; the component A is connected with the component B, the component B is provided with at least one group of steel needle guide holes used for guiding steel needles to be placed, a swing saw guide hole parallel to the section where the steel needle guide holes are located and a coronal osteotomy guide hole forming an included angle of 110 degrees with the section where the steel needle guide holes are located, the component A is connected with the component C, and the component C comprises a first fixing part and a second fixing part. The first fixing part and the second fixing part are fixed with the tibia through bone nails, the second fixing part is overturned relative to the first fixing part, and the first fixing part is provided with a protractor for measuring the overturning angle of the second fixing part. According to the device, steel needle implantation, osteotomy, distraction and steel plate installation in the whole HTO operation can be completed, cost is low, and use is convenient.

The present invention belongs to the technical field of medical devices, and discloses a multi-angle femoral osteotomy guide capable of protecting ligaments and a method of using the same, wherein the multi-angle femoral osteotomy guide capable of protecting ligaments comprises a gap positioning block and an osteotomy guide, wherein the gap positioning block extends in one direction and is configured with a positioning direction consistent with the direction, the gap positioning block has a positioning end and a mounting end sequentially arranged along the positioning direction, and the femoral osteotomy guide can be inserted into the bone joint along the positioning direction through the positioning end; the osteotomy guide is detachably slidably connected to the mounting end of the gap positioning block, and can be moved along the positioning direction on the gap positioning block, so that the gap positioning block can be detached from the osteotomy guide in a direction opposite to the positioning direction. The present invention adopts a connection structure in which the gap positioning block and the osteotomy guide can be installed and detached along the positioning direction, so that the oscillating saw will not touch the ligament when osteotomizing the distal end of the femur, thereby effectively protecting the ligament.

The invention discloses an artificial temporomandibular joint replacement bone trimming device, and relates to the technical field of joint prostheses, the artificial temporomandibular joint replacement bone trimming device comprises a positioning plate similar to a temporomandibular joint in shape, a prosthesis used as an artificial temporomandibular joint replacement bone is arranged in the positioning plate, and an osteotomy guide plate assembly used for osteotomy and positioning of the prosthesis is arranged in the positioning plate; a prosthesis grinding assembly is further arranged on the positioning plate; the right-angle threaded rod structures are driven to be close to or far away from each other by rotating the adjusting rotary drum, so that osteotomy grooves among the articular fossa guide plate, the articular head guide plate and the connecting plate are adjusted, positioning screws penetrate through the guide plates and positioning holes in the prosthesis for positioning, and sick part excision and prosthesis implantation operation are performed. The rack is driven by the driving gear to rotate along the positioning plate, the edge of the prosthesis is ground through the bone file, and ground powder is sucked and recycled; the device has the advantages of being high in operation efficiency, good in safety, convenient to use and simple in structure.

The invention discloses a set instrument for acetabulum tenon-and-mortise structural bone grafting and application, relates to the field of orthopedic surgical instruments, adopts a cylindrical ring file, a wedge-shaped angle file, a hollow trephine and a wedge-shaped osteotomy guide plate as the set instrument for acetabulum tenon-and-mortise structural bone grafting, and introduces a tenon-and-mortise structure mechanical embedding principle of Chinese traditional woodworking science into the field of acetabulum reconstruction. According to the acetabular cup prosthesis, a mortise and tenon structural bone grafting of an autologous femoral head is adopted, a Mortia and Tenon Bone Grafting technology (Mortia and Tenon Bone Grafting, MTBG) is innovatively put forward, an acetabular bone groove and a bone grafting block which are matched are prepared in a standardized mode, acetabular defects are embedded and filled through the accurately matched bone block, and the coverage rate and initial stability of the acetabular cup prosthesis are remarkably increased, and the bone fusion prospect of the acetabular cup prosthesis is remarkably improved; the hip joint function of the patient is obviously improved, pain is relieved, the walking ability is improved, and the life quality is improved; the invention provides a reliable and efficient new structural bone grafting technology, and the safety and long-term effect of DDH acetabulum reconstruction can be improved.

The invention provides a method for designing an osteotomy surface of an osteotomy guide plate, which belongs to the field of medical instruments and comprises the following steps of: establishing an xoz coordinate system in a sagittal view image on a three-dimensional bone model, and establishing a yoz coordinate system in a coronal view image on the three-dimensional bone model; in the three-dimensional coordinate system, on the basis that the highest point of the normal tibia part is a point P1, the osteotomy surface S1 passes through the point P1 and is parallel to the xoy surface, the spatial position of the osteotomy surface S1 in the three-dimensional coordinate system is obtained; an osteotomy line L1 is determined in a sagittal image, an osteotomy line L2 is determined in a coronal image, and the spatial position of an osteotomy surface S2 in a three-dimensional coordinate system is obtained based on the osteotomy line L1 and the osteotomy line L2; the first osteotomy surface and the second osteotomy surface of the osteotomy guide plate are set according to the 3D printing technology in combination with the relative position relation of the osteotomy surface S1 and the osteotomy surface S2, the osteotomy guide plate is obtained, the osteotomy guide plate is designed according to the osteotomy plane equation, and operation errors are reduced.

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 present invention relates to the technical field of medical devices, and particularly relates to a positioning structure and method for osteotomy and bone reconstruction. The positioning structure for osteotomy and bone reconstruction includes a positioning assembly; the positioning assembly includes an upper jaw positioning guide plate, a lower jaw osteotomy guide plate, and a reconstructed bone positioning guide plate; the upper jaw positioning guide plate has an upper jaw occlusal surface, an upper N-shaped splicing mechanism, a plurality of positioning holes, and a plurality of fixing holes; the lower jaw osteotomy guide plate has a lower N-shaped splicing mechanism, a connection area, a lower jaw lower edge indication area, and an osteotomy guiding surface; the reconstructed bone positioning guide plate includes an indication guide plate and a plurality of C-shaped connecting rods; after the upper jaw positioning guide plate is fixed, the insertion and cooperation of the two lower jaw guide plates can guide all the key steps of the operation, without repeated disassembly and adjustment, and maintain accurate positioning and intermaxillary distance to facilitate subsequent implant restoration; based on the upper jaw dentition, the lower jaw osteotomy position and the reconstructed bone position can be positioned, and it can be applied to patients with tooth loosening or lower jaw dentition loss caused by various reasons.

The invention discloses an osteotomy guide plate calibration method and device, electronic equipment and a storage medium. The method comprises the steps that a first conversion matrix and a second conversion matrix are obtained; obtaining an image obtained by photographing the optical calibration device by the camera; determining a third conversion matrix corresponding to each preset placement point according to the image; determining a direction vector of each coordinate axis of the osteotomy guide plate coordinate system based on the calibration coordinates, the second conversion matrix and third conversion matrixes corresponding to all the preset placement points; determining a fourth conversion matrix based on the direction vectors of all coordinate axes of the osteotomy guide plate coordinate system and the coordinates of the original point in the reference coordinate system; and performing left multiplication on the first conversion matrix and the fourth conversion matrix to obtain a fifth conversion matrix. According to the method, the third conversion matrix from the camera coordinate system to the optical calibration device coordinate system corresponding to each preset placement point is determined according to the image, the osteotomy guide plate can be calibrated when the osteotomy guide plate and the mechanical arm are actually assembled, and the calibration accuracy can be improved.

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 relates to a high-adaptation type femur osteotomy guiding device, which belongs to the technical field of medical instruments and comprises a bone attaching guide plate positioning base, an integrated support frame is fixedly connected to the top of the bone attaching guide plate positioning base, and a visual force line laser indicator is fixedly arranged at the top of the integrated support frame. A vertical force line guide needle device is fixedly arranged at the bottom of the integrated supporting frame, a guide needle is assembled in the vertical force line guide needle device, and the guide needle is matched with an osteotomy guide plate. According to the utility model, the guiding device which is simultaneously provided with the accurate bone-sticking positioning base, the visual force line display and the osteotomy guiding positioning nail is arranged, the accurate positioning of the foundation is completed by utilizing the bone-sticking guide plate positioning base which is attached to the thighbone surface of a patient, and the visual force line of the simulated patient is combined with the osteotomy guide plate which is vertical to the force line of the simulated patient; accurate vertical force line osteotomy is achieved, and the success rate of an operation is greatly guaranteed.

The present invention relates to a distal femoral osteotomy positioning device, comprising a positioning block, a spacer, and an osteotomy guide. The positioning block has a first positioning surface, the first positioning surface being used to contact the tibial osteotomy surface so that the positioning block is positioned on the tibia; the spacer has a second positioning surface opposite to the first positioning surface, the second positioning surface being used to contact the distal articular surface of the femur, and an angle is formed between the first positioning surface and the second positioning surface; the osteotomy guide has an osteotomy groove. The distal femoral osteotomy positioning device of the present invention can maintain a posterior tilt angle of 3° to 7° during tibial osteotomy so that the tibial plateau conforms to the physiological morphology of the knee joint, while reducing the situation in which the distal femoral osteotomy thickness varies due to inconsistent insertion depth of the positioning block into the knee joint, thereby maintaining the accuracy of osteotomy positioning.

The invention provides a mandibular angle osteotomy surgical robot system which is characterized in that an osteotomy guide plate assembly comprises a first osteotomy guide plate and a second osteotomy guide plate, the second osteotomy guide plate comprises a supporting guide plate and a fixed guide plate, and the supporting guide plate and the fixed guide plate are assembled to form an osteotomy groove body; the special-shaped scalpel comprises a saw blade part and a handle part, the handle part is provided with a bent structure, and an observation space is formed below the handle part. The driving module is used for driving the special-shaped scalpel to execute cutting operation according to a preset track; the monitoring module monitors the cutting operation state of the saw blade part through the observation space; the main control module is used for establishing a human jaw three-dimensional model, generating a personalized osteotomy guide plate assembly based on the human jaw three-dimensional model, obtaining the cutting operation state of the saw blade part through the monitoring module, and controlling the special-shaped scalpel to execute cutting operation through the driving module.

The present application relates to the technical field of medical devices, and in particular to a unicompartmental replacement osteotomy guide positioning module and a unicompartmental replacement osteotomy guide positioning system, wherein the unicompartmental replacement osteotomy guide positioning module comprises a first fitting portion and a second fitting portion connected to each other, wherein the first fitting portion comprises a first fitting surface and a first pressing surface arranged opposite to each other, and the second fitting portion comprises a second fitting surface and a second pressing surface arranged opposite to each other, wherein the first fitting surface can fit with a first part of the condylar bone surface, and the second fitting surface can fit with a second part of the surface. The first force direction perpendicular to the first pressing surface and the second force direction perpendicular to the second pressing surface intersect. According to the unicompartmental replacement osteotomy guide positioning module and the unicompartmental replacement osteotomy guide positioning system provided by the present application, the positioning operation of the unicompartmental replacement osteotomy guide positioning module is simplified, and the positioning efficiency and positioning accuracy of the unicompartmental replacement osteotomy guide positioning module are improved.

The invention belongs to the technical field of hip joint surgery dislocation approach, and particularly relates to a hip joint surgery dislocation approach osteotomy and screw placement guide assembly and a use method. The guide assembly comprises an osteotomy auxiliary plate and a screw guide plate. The osteotomy auxiliary plate is arranged on the outer side of the exposed greater trochanter femur of the patient and assists the external cutting device in conducting osteotomy operation on the greater trochanter of the femur of the patient. The screw guide plate is arranged on the outer side of greater trochanter of the thighbone of a patient after osteotomy is completed and used for positioning and guiding the at least two reset fastening screws. An osteotomy and screw placement guide assembly is designed in a conventional hip joint surgery dislocation approach operation, an osteotomy auxiliary plate and a screw guide plate are designed, and the osteotomy auxiliary plate comprises an osteotomy guide mechanism at a proper position and is used for accurately positioning the osteotomy position of a greater trochanter osteotomy block of a patient; the problem that in the prior art, when osteotomy is conducted on a patient completely depending on doctor experience, an osteotomy block is likely to be too large or too small or the osteotomy direction is dislocated is solved.

The invention relates to the technical field of medical auxiliary instruments, and particularly discloses a femoral external rotation osteotomy positioning device and a use method thereof. The femoral external rotation osteotomy positioning device comprises a mounting buckle, a positioning sheet and a plurality of positioning columns, the mounting buckle and the positioning column are respectively arranged close to two ends of the positioning sheet; the movable ends of the positioning columns extend towards the lower end face of the positioning piece, and the plane defined by connecting lines of the movable ends of all the positioning columns is parallel to the plane where the positioning piece is located. According to the thighbone external rotation osteotomy positioning device, the mounting buckle can be mounted on external rotation osteotomy guide plates provided by different prosthesis manufacturers and is matched with the external rotation osteotomy guide plates to adjust the external rotation position, so that the external rotation osteotomy position is accurately determined, the thighbone far end can be matched with a prosthesis after external rotation osteotomy, and the thighbone far end can be accurately positioned. Therefore, the good flexion gap and patella trajectory after total knee replacement are ensured, the knee joint function is recovered, and the service life of the prosthesis is prolonged.

The utility model discloses a universal osteotomy guide plate for fixing ankle joint talus, which comprises a positioning osteotomy seat and a fixing component, a part of talus matching part is arranged on the bottom surface of a connecting block, and the top of the connecting block is connected with the fixing component; the first end of the first curved surface is located on the bottom face of the connecting block, the second end of the first curved surface extends towards the top of the connecting block, the first end of the second curved surface is connected with the second end of the first curved surface, and the second end of the second curved surface extends to the top of the connecting block and is connected with the fixing assembly. The first groove and the second groove are formed in the first curved surface and the second curved surface respectively; the first fixing block is arranged at the top of the connecting block, two first fixing holes are formed in the second end of the first fixing block, the first fixing holes penetrate through the first fixing block, the first kirschner wire penetrates through the two first fixing holes and is inserted into the talus, so that the talus is fixed, recycling of the osteotomy guide plate is achieved, and cost is saved.

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.

The present invention discloses an individualized osteotomy and repositioning surgical guide system for mandibular body osteotomy, including an individualized osteotomy guide and a bone plate; the osteotomy guide can be fitted with the front of the mandible and used for osteotomy of the mandibular body, and the bone plate can be fitted with the mandibular body after osteotomy and used to locate and fix the bone end. The osteotomy guide is an integrated structure, including a first guide plate, a second guide plate, and a third guide plate covering the front of the mandible. The bone plate is a split structure, including a first bone plate and a second bone plate; the first bone plate and the second bone plate each include an integrated bone plate body, the bone plate body is rectangular as a whole, and a first extension portion and a second extension portion are also provided thereon. The present invention also discloses a preparation method of the above-mentioned surgical guide system and its application in mandibular deformity correction.

The invention provides an osteotomy guide plate and an osteotomy guide assembly, the osteotomy guide plate comprises a main body part, a switching part and a lateral part, the main body part is provided with an inner surface and an outer surface which are oppositely arranged, and a near end surface arranged between the inner surface and the outer surface, and the main body part is provided with a transverse osteotomy groove penetrating through the inner surface and the outer surface; the adapter part is connected to one end of the main body part, the lateral part is connected to one end, away from the main body part, of the adapter part, the lateral part is provided with an inner side facing the main body part and an outer side away from the main body part, and the lateral part is provided with a vertical osteotomy groove penetrating through the inner side and the outer side. The osteotomy guide assembly comprises the osteotomy guide plate, a first distraction block and a second distraction block. After osteotomy is conducted through guiding of the transverse osteotomy groove and the vertical osteotomy groove, the first osteotomy seam and the second osteotomy seam which are communicated with each other are formed in the near end of the tibia, correction of the force line of the tibia of a patient and adjustment of a sunk tibia platform can be achieved, and therefore the osteotomy device can be suitable for the tibia near-end combined osteotomy operation.

The utility model relates to the technical field of 3D printing reduction guide plates for wrist joint reduction, and discloses a 3D printing reduction guide plate for wrist joint reduction, which comprises a splicing component. The osteotomy guide plate assembly is reasonable in structure, and the osteotomy guide plate assembly and the wrist joint reduction guide plate assembly are matched with each other, so that the palm and the arm of a patient are fixed to the surfaces of the limb fixing assemblies at the two ends, a bandage is tensioned, and then a fixing bolt is rotated to inwards press the bandage for fixation; after the skin on the surface of the wrist joint of the patient is cut open, the universal rotating arm assembly on the side of the osteotomy guide plate assembly is pulled down, the wrist joint is pulled down and pressed downwards to the position needing osteotomy, and then osteotomy can be conducted from an osteotomy groove, and after osteotomy, a rotating arm is lifted to be put back; and then the universal rotating arm assembly with the other end connected with the wrist joint reduction guide plate assembly is moved towards the wrist joint and pressed downwards into the interior, and then the surgical steel needle is inserted into the cut bone through the insertion holes in the two sides in an X-shaped cross mode to be fixed.

An osteotomy guide (100) includes an inner surface (102) that faces the bone (300), and an outer surface (104) opposite the inner surface (102) along an outward direction (Do). The inner surface (102) defines proximal and distal bone contacting regions (118,120) that are spaced from one another by a gap (124) that extends into the inner surface (102) towards the outer surface (104). The guide (100) includes an ascending guide surface (134) that extends along an ascending direction so as to define an ascending cutting path into the bone (300). The guide (100) includes a transverse guide surface (138) that extends along a transverse direction so as to define a transverse cutting path into the bone (300).

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.