249 results about "Bone block" patented technology

The invention provides a method for measuring shoulder joint glenoid bone defects in a three-dimensional CT image, the method is divided into five modules, namely a segmentation module, a registration module, a positioning module, a defect size measurement module and a defect proportion measurement module, and the method can realize arbitrary defect measurement containing shoulder joint glenoid CT data under a relatively high resolution ratio. The method does not depend on manual operation, and automatic shoulder joint glenoid bone defect measurement is achieved. According to the method provided by the invention, the proportion of the glenoid bone defect of the shoulder joint and the size of the defect bone block can be quantitatively calculated in a standard, automatic and relatively accurate manner, and the preoperative diagnosis efficiency of a doctor is greatly improved. The invention further provides a system for measuring the glenoid bone defect of the shoulder joint in the three-dimensional CT image. According to the system, the indexes of the shoulder joint glenoid bone defect can be automatically obtained from end to end, that is, the input is shoulder joint CT data of the uninjured side and the affected side of a patient, and the output is the indexes of the shoulder joint glenoid bone defect.

The utility model provides a posterior cruciate ligament stopping point fracture fixing device which comprises a fixing steel plate, a threaded sleeve and a fixing screw, and a traction hole for a first traction line to penetrate through is formed in one corner of the fixing steel plate; one end of the threaded sleeve is rotatably arranged in the middle of the fixed steel plate, the other end of the threaded sleeve is provided with a threaded hole, and the bottom of the threaded hole is connected with a second pull wire; the fixing screw is in threaded fit with the threaded hole in the threaded sleeve, and the center of the fixing screw is provided with a threading hole for the second pull wire to penetrate through. The device can be implanted under arthroscope micro-creation, and has the advantages of small trauma and less bleeding compared with the traditional open implantation; meanwhile, compared with a loop-shaped steel plate, the bone block is fixed through the pulling force of the screw, the force is larger and more stable, and healing of posterior cruciate ligament dead point avulsion fracture is facilitated; the device is simple in overall structure, low in manufacturing cost, stable in structure and high in popularization value.

The utility model provides a bone drill, including a protective shell, a drive shaft, an inner ring cutting blade and an outer ring cutting blade; the protective shell has a containing inner cavity and a clearance gap laterally connected to the containing inner cavity, and the clearance gap also extends to the end of the protective shell; the drive shaft passes through the head end of the protective shell to extend into the containing inner cavity, the inner ring cutting blade and the outer ring cutting blade are arranged in the containing inner cavity of the protective shell and assembled on the drive shaft, the drive shaft, the inner ring cutting blade and the outer ring cutting blade are distributed in sequence from the inside to the outside and are coaxially arranged, and the inner ring cutting blade and the outer ring cutting blade are partially exposed in the clearance gap. In this way, a bone block of a set shape can be directly cut out without additional processing, and bone material is saved; at the same time, the area that does not need to be cut is blocked by the protective shell, and the protective shell can well protect the soft tissue from being scratched.

The present disclosure relates to a 2D-3D medical image registration method. The method includes obtaining a preoperative CT image and an intraoperative Xray image of a target bone block, inputting the preoperative CT image and the intraoperative Xray image into a depth-based learning-based regression network, and roughly estimating an initial spatial posture of the target bone block by using the regression network; and adjusting a projection of the preoperative CT image based on the initial spatial posture to generate a DRR image; and inputting the DRR image, the intraoperative Xray image, and the preoperative CT image into a pre-trained correspondence point relationship estimation network, estimating a feature point corresponding relationship between the DRR image and the Xray image by using the corresponding point relationship estimation network, and optimizing the initial spatial posture according to the feature point corresponding relationship to obtain an optimized spatial posture.

The invention discloses a device for assisting shaping and fixing of an absorbable plate after sagittal splitting of mandibular ramus, and relates to the technical field of auxiliary equipment for sagittal splitting of mandibular ramus osteotomy, the device comprises a shaping frame and a fixing frame, the shaping frame and the fixing frame are connected through a connecting piece, and a plurality of nail holes are formed in each of the shaping frame and the fixing frame. The fixing frame can play a role in temporarily stabilizing free bone blocks, and meanwhile, the shaping frame can assist the absorbable plate in rapid and accurate shaping.

The invention discloses a surgical guide plate and a manufacturing method thereof.The surgical guide plate comprises a plate body, at least two guide grooves are formed in the plate body, the guide grooves penetrate through the plate body, the guide grooves are communicated with one another and form an included angle, and the included angle is an osteotomy included angle; the positioning part is arranged on the edge of the plate body, and the positioning part is used for positioning the relative position between two bone blocks after osteotomy. By the adoption of the scheme, the guide grooves penetrating through the plate body can guide the osteotomy path of an osteotomy tool such as a swing saw blade or a milling cutter in an operation, the guide grooves communicate with one another, the osteotomy included angle is provided, and the osteotomy accuracy is improved. The positioning part can position the relative positions of the two bone blocks after osteotomy, so that the accuracy of bone block positioning is improved, the treatment effect of operation deformity correction is improved, and postoperative pain is reduced. In addition, the positioning part is arranged at the edge of the plate body, so that the edge of the plate body can be used for positioning.

The parallel positioning osteotomy device comprises an operation plate, an osteotomy sleeve, a guide sleeve and a guide rod, one end of the osteotomy sleeve is fixed to one side of the operation plate and is perpendicular to the operation plate, an osteotomy channel is formed in the center of the osteotomy sleeve, and the osteotomy channel penetrates through the osteotomy sleeve and the operation plate at the same time; the osteotomy channel comprises at least three transversely arranged positioning holes, and the adjacent positioning holes are communicated through an osteotomy groove; the two guide sleeves are fixed to one side of the operation plate and are parallel to each other, the two guide sleeves are arranged on the two sides of the osteotomy sleeve respectively and are perpendicular to the osteotomy sleeve, and the guide rods penetrate through the guide sleeves. By arranging the two parallel guide sleeves, the two osteotomy devices can be kept in a parallel state during osteotomy, so that two osteotomy planes are parallel to each other, the consistency of bone regeneration directions is ensured, pressurized healing after two carried bone blocks are finally aligned is facilitated, and the bone carrying operation effect is improved.

The present application relates to the technical field of computers, and discloses a bone burring control method, a parameter processing method, and a device. The method comprises: constructing an area model of an area to be burred of a bone segment to be burred and a burr model of a burr for burring said area; determining a reference line on the basis of the morphology of the area model, and planning sampling points on the reference line; determining a burring path by means of the reference line, comprising: on the basis of the condition of intersection between the triangular meshes of the burr model and the area model, determining a vertical retraction height of each sampling point on the reference line in a coordinate system of said area, updating the vertical-axis coordinate of each sampling point on the basis of the vertical retraction height, and generating the burring path on the basis of the updated sampling points; and on the basis of the burring path, controlling a burr corresponding to the burr model to burr said bone segment. According to the method and apparatus provided by the present application, a burring path can be generated, and the jawbone is automatically burred along the burring path by means of a machine, thereby improving the burring precision.

The present invention provides a lateral fibular bone transport external fixator device, which includes a fibular transport device, a tibia fixation device, and a connection device. The fibular transport device drives the synchronous movement of the fibular transport frame through the movement of the adjustment device, so as to realize the position offset of the bone block of the osteotomy segment of the fibula. The tibia fixation device includes a tibia fixation frame and a deviation correction adjustment device, and the deviation correction adjustment device can adjust the fixation position of the tibia fixation frame and the connection device. The connection device connects the fibular transport device and the tibia fixation device. The present invention also provides a method for using the lateral fibular bone transport external fixator device. The present invention only sets the fixed fulcrum on the tibia, reduces the number of wound surfaces on the tibia side, does not affect the load-bearing capacity of the tibia after surgery, and at the same time sets the bone transport operation on the fibular side to realize the lateral fibular bone transport. The fibula is located deep in the skin fascia and is wrapped by the anterior and posterior muscle groups of the fibula. There is a richer capillary basis for bone transport at the fibular end, and the effect of repairing blood circulation is better.

The invention relates to the field of medical instruments, in particular to an edentulous jaw simulation implantation perforation device and a preparation and use method thereof.The edentulous jaw simulation implantation perforation device comprises a jaw bone model of a lower jaw, the jaw bone model is provided with a hollowed-out part, and a bone block is arranged in the hollowed-out part and used for simulating an alveolar bone of an area to be implanted; a pressure sensor is mounted at the bottom of the hollow part and used for simulating a pressing groove neural tube, and the pressure sensor is used for giving an alarm when the planting instrument enters a sensing area of the pressure sensor. According to the invention, a real human body edentulous jaw anatomical structure is highly restored, a training platform which is extremely similar to a real operation environment is provided for an operator, and the sense of reality of training is remarkably enhanced. The bone block material and the pressure sensor embedded in the device can provide tactile sense and force sense feedback in real time, help doctors to master operation skills more accurately in a simulated operation, and effectively improve operation skills.

The present invention discloses a grinding type bone particle preparation device, which comprises a shell, a lower grinding disc, an upper grinding disc, a driving mechanism, a feeding pipe, a discharging channel and a discharging channel; an inner cavity is provided in the shell, the lower grinding disc is arranged in the inner cavity and fixedly connected to the shell, a bone grinding gap is formed between the upper grinding disc and the lower grinding disc, and the driving mechanism is used to drive the upper grinding disc to rotate; the feeding pipe is used to access and transport bone blocks to the bone grinding gap, the discharging channel is connected to the bone grinding gap and is used to discharge the bone crushing particles in the bone grinding gap to the bottom of the inner cavity, and the discharging channel is connected to the bottom of the inner cavity and is used to discharge the bone crushing particles located at the bottom of the inner cavity. The present invention can crush bone blocks into bone crushing particles, can improve the efficiency of crushing bone blocks, can improve the stability and uniformity of the size of bone crushing particles, and thus can improve the effect of surgical treatment, and is easy to use.

The invention discloses a spine intervertebral fusion implant positioning structure, which relates to the technical field of intervertebral fusion cage, and comprises a fusion cage upper moving part and a fusion cage lower moving part, which are mutually clamped, bone grafting holes for implanting bone blocks are formed in the fusion cage upper movable part and the fusion cage lower movable part in a penetrating manner; through the arrangement of the fusion cage upper moving part, the fusion cage lower moving part and the expandable connecting rods, stable support is formed between adjacent vertebral bodies, the correct height between the vertebral bodies is maintained, meanwhile, through the arrangement of the connecting rods, the connecting rods and the push rods, the situation that the interbody fusion cage is deformed in the process of bearing pressure between the adjacent vertebral bodies in the use process is avoided, and the use safety of the interbody fusion cage is improved. And through the arrangement of the helical tooth blocks and the clamping blocks, the fusion cage is prevented from being deformed due to the fact that the adjacent intervertebral pressure is too large in the using process.

A femoral intertrochanteric fracture opening system is characterized by comprising a sleeve, a hollow sleeve core and a hollow trephine, an impact portion is arranged at one end of the sleeve, a plurality of sawteeth are arranged on the outer ring of the end of the other end of the sleeve, the inner diameter of the sleeve is the same as the outer diameter of the hollow sleeve core, a center hole is formed in the center of the hollow sleeve core, and the hollow trephine is arranged in the center hole. The sleeve is limited and fixed through the hollow sleeve core, and the hollow trephine is limited through the sleeve and the positioning guide pin, so that the accuracy of the opening position is ensured; according to the utility model, the trephine is used for opening, the force is uniform when the trephine is used for opening, and the outer surface of the trephine does not have the situation that the size of the outer surface of a conical drill is always changed, so that the situation that bone blocks on two sides of a fracture line are extruded in the opening process is avoided, and the serious defect that the bone can be extruded open by a traditional drill bit is overcome.

The invention provides an oral maxillofacial bone block repositor, and relates to the field of medical equipment. The oral maxillofacial bone block repositor comprises a fixing structure, a control module is fixedly connected to the center of the front side wall of the fixing structure, and the lower ends of the two ends of the fixing structure are jointly and fixedly connected with a reposition structure; the fixing structure is mainly used for fixing and keeping the whole body on the head of a patient and comprises a lantern ring, a plurality of clamping grooves are formed in the outer side wall of the lantern ring, the positions, close to the edges of the two sides, of the center of the side wall of the lantern ring are sleeved with adjusting sleeves respectively, and the two ends of the lantern ring are connected through a connecting buckle. By arranging the reduction structure, the distance between the lower connecting plate and the upper connecting plate is adjusted according to the face condition of a patient and the position of the jaw bone, the two expansion plates are pulled out from the interiors of the two ends of the side plates to be fully attached to the lower end of the face of the patient, and the stability in the reduction process is guaranteed; accurate reset processing is achieved by adjusting the placing position and the tightness of the reset plate.

The utility model discloses a three -sided formula bone knife structure, include: connecting seat, joint, the joint fixed setting in the upper end of connecting seat, handle, the lower extreme of handle with the upper end of joint is detachably connected, three -sided formula cutter body, three -sided formula cutter body setting in the lower end of connecting seat. Through the application of the utility model, provide a three -sided formula bone knife structure for taking bone, especially applicable to the acquisition operation of double cortex ilium, it can be realized in one insertion process smoothly intercepts double cortex bone piece, shortens the operation time and reduces the trauma to the patient, can carry out multidirectional cutting in the narrow bone surface area through three -sided formula design, reduces the demand of repeatedly changing sword or using other turning cutter, further improves the operation efficiency.

The utility model belongs to the technical field of animal waste, and particularly relates to an animal waste harmless treatment system which comprises a frame, a drying device is arranged on the outer surface of the frame, the drying device comprises an electric heating wire, the electric heating wire is started to dry the waste, and a grinding device is arranged to grind the waste so as to grind the waste. The grinding motor drives the rotating rod to rotate, the rotating rod is rotationally connected with the grinding roller, rotation of the grinding roller is not affected while the grinding roller is driven to revolve, and the rotating gear fixedly installed on the grinding roller is meshed with the gear ring fixedly installed on the grinding frame to enable the grinding roller to rotate, so that the waste grinding efficiency can be improved, and the problems that in the prior art, bones are hard tissues, and the grinding efficiency is poor are solved. Large bone blocks and skeletons need to be completely degraded or decomposed for a long time, and the overall waste treatment efficiency is remarkably affected.

The lag screw comprises a titanium alloy screw body and an injection channel, the injection channel comprises a plastic pipeline, one end of the plastic pipeline is fixedly connected with a limiting block, the end portion of the limiting block is fixedly connected with a connecting pipe, the end portion of the connecting pipe is connected with a connector, and the connector is fixedly connected with the titanium alloy screw body. A plurality of discharging holes are formed in the tail section of the plastic pipeline, two positioning grooves are formed in the plastic pipeline, the titanium alloy screw comprises a screw body, and a threaded section is arranged on the screw body. According to the lag screw suitable for old patients and intra-operative pressurization failure, the titanium alloy screw is screwed into a bone block, then the injection channel is plugged into the titanium alloy screw, and then an injector is used for injecting a reinforcing agent into the injection channel, so that the periphery of the threaded section of the titanium alloy screw is filled with the reinforcing agent, and broken bones are solidified together; and the grasping force is improved, and the pressurizing effect is improved.

The present application belongs to the technical field of medical devices, and particularly relates to a TPLO animal special bone plate, which comprises a handle body extending vertically as a whole for connecting a tibia stem, the top end of the handle body is suspended to form an arm body extending transversely as a whole for connecting a bone cut, the plate body of the handle body and the arm body is respectively provided with a protruding unit, when the protruding unit is positioned against the tibia, the plate body of the handle body and the arm body is arranged in the gap between the tibia. The arm body extending transversely as a whole can reliably support the middle and lower part of the bone cut, while reducing the surface area of the bone plate head covering the bone cut, and can also ensure the effective fixation of the bone plate to the bone cut. The protruding unit arranged on the inner side of the bone plate and the tibia form a point contact, which can ensure the reliable positioning of the bone plate and the tibia, and also keep a gap between the bone plate and the tibia for blood delivery and circulation, which is beneficial to the blood circulation of the bone block covered by the bone plate.

The invention discloses a suture-containing anchor device for fixing articular cartilage stripping and a fixing method. The device comprises an anchor, a soft needle, a buckle cylinder and a suture; the anchor is made of titanium alloy absorbable materials and is provided with a double-spiral decompression groove and a suture channel. The suture is made of eight strands of ultra-high molecular weight polyethylene coated with polylactic acid, one end is fixed with the anchor, and the other end is welded with a nickel-titanium alloy soft needle through laser; the buckle cylinder is detachable and wraps the suture and the soft needle connecting section. The method comprises the following steps: resetting a bone block and temporarily fixing the bone block, drilling a central bone tunnel, implanting an anchor nail, installing a buckle cylinder, then enabling a soft needle with a suture to penetrate out, drilling a peripheral bone tunnel, threading into a tension band in a bundle splitting manner, adjusting the tension to 0.5-1.2 N / mm < 2 >, and then combining and locking the SMC sliding knot and the surgical knot. Minimally invasive fixation is achieved, mechanical stability and tension uniformity are improved, and cartilage healing is facilitated.

A bone transport device for transporting a bone segment is provided. The bone transport device includes an elongated shaft, a tubular housing surrounding the elongated shaft, a slider slidably mounted on the elongated shaft within the housing, an actuator configured to axially slide the slider along a sliding segment of the elongated shaft, and a first cable portion fixedly connected to a bone connector located outside the tubular housing. The first cable portion is also fixedly connected to the slider within the tubular housing, and the first cable portion is configured to transmit a sliding force to the bone connector as the slider moves along the sliding segment of the elongated shaft. The bone transport device is characterized in that the sliding segment is encircled by a solid portion of the tubular housing, and the first cable portion passes through a first hole in a tube wall of the tubular housing. The invention also provides a bone transport device characterized in that the slider is rotationally fixed relative to the tubular housing. The invention also provides a method of transporting a bone segment using the bone transport device.

The present disclosure relates to the technical field of medical instruments, in particular to a series of instruments for exposure of lesions posterior to talus dome, including: a lesion exposure spreader configured to spread an ankle joint, a retractor configured to laterally retract tissue, and a talus lesion bone extractor configured for lesion debridement and bone extraction. The lesion exposure spreader includes a fixed handle. A supporting strip is fixedly arranged on one side of the fixed handle. A movable handle and a locking mechanism are slidably connected to the supporting strip. Fixing nails are arranged at the tail ends of the fixed handle and the movable handle. The retractor includes a retractor handle. The tail end of the retractor handle is bent and extends downwards, and the bent and extending part is a retractor blade. The talus lesion bone extractor includes a round bone extraction rod and a steering rod. The steering rod is detachably connected to the head end of the round bone extraction rod. A bone cutting end and a bone extraction section are sequentially arranged at the tail end of the round bone extraction rod. The bone cutting end is a conical annular cutting edge. A bone extraction groove is formed in the side wall of the bone extraction section. The bone extraction groove is communicated with the bone cutting end, and a bone block cut by the bone cutting end is extracted from the bone extraction groove. According to the present disclosure, lesion exposure and surgery field illumination are increased.

The utility model provides a femoral neck fracture internal fixation device. The femoral neck fracture internal fixation device comprises a main nail, a first auxiliary nail and an anti-skid assembly. A matching through hole is formed in the main nail; the first auxiliary nail is arranged at the matching through hole of the main nail in a penetrating manner, and the first auxiliary nail is arranged in the direction perpendicular to the gravity; the anti-skid assembly is used for limiting displacement of the first auxiliary nail and the main nail. The first auxiliary nail is arranged in the direction perpendicular to the gravity, the first auxiliary nail can provide support for the second bone block, when the first auxiliary nail bears the gravity of the second bone block, the first auxiliary nail cannot move axially, and the first auxiliary nail can further apply counter-acting force to the second bone block with the first bone block as the fulcrum. The first bone block and the second bone block are limited to move beyond an allowable range, and the stability of fracture healing is improved.

The utility model discloses a kirschner wire positioning device for closed osteotomy. The kirschner wire positioning device comprises a positioning bevel protractor and a guide block, the positioning bevel protractor is arranged in an arc shape, and a sliding groove is formed in the periphery of the positioning bevel protractor. The guide block is slidably arranged on the periphery of the positioning angle ruler, and a sliding part in sliding fit with the sliding groove is arranged on the guide block; the outer side of the guide block is provided with a plurality of pairs of guide holes which are arranged side by side up and down and used for allowing kirschner wires to penetrate through, the guide holes penetrate through the guide block in the radial direction of the positioning angle ruler, and the guide block can be adjusted in a sliding mode according to needs. The front ends of the kirschner wires inserted into the guide holes can be concentrated at one point on a vertical plane, and the kirschner wires can be quickly and accurately drilled into the same position in a bone, so that accurate osteotomy is realized, the risk of occurrence of related complications of an operation is reduced, the integrity of two side surfaces of a wedge-shaped bone block cut from the bone is ensured, and the cutting efficiency of the wedge-shaped bone block is improved. The first osteotomy plane and the second osteotomy plane can be tightly attached conveniently, and rapid rehabilitation of a patient is facilitated.

The invention relates to the technical field of medical image processing, in particular to a calcaneal fracture reduction effect dynamic evaluation system based on a three-dimensional image. According to the system, the broken bone shape features of each bone block are obtained based on Gaussian curvature information of the surfaces of the bone blocks, broken bones corresponding to broken main bones are determined through a classification and direction correlation analysis method, broken bone indexes are quantified, and a bone area is obtained. Dividing the bone region into a to-be-registered region and a damaged region by utilizing the damage characteristic value, determining a stress influence direction of the to-be-registered region by combining information in the damaged region, and obtaining extrusion characteristics and offset characteristics of the bone block in the stress influence direction, and screening out an initial registration point of the bone block in combination with the damage characteristic value, and performing registration and reduction effect evaluation. According to the method, the bone blocks in the three-dimensional model are effectively identified and classified, the accurate initial registration points are screened out for registration by analyzing the fracture influence condition, and the registration effect and the reduction evaluation accuracy are ensured.

The invention relates to the technical field of image processing, and provides a multi-bone-block scene image registration method and device based on 2D-3D contour registration, electronic equipment and a computer program product. The method comprises the following steps: acquiring a two-dimensional image and a three-dimensional image to be registered in a multi-bone-block scene; selecting a plurality of fixed contour points with significant features from the three-dimensional image; projecting the plurality of fixed contour points to the two-dimensional image to obtain a plurality of initial contour points in the two-dimensional image, the plurality of initial contour points being in one-to-one correspondence with the plurality of fixed contour points; and completing registration of the two-dimensional image and the three-dimensional image based on the plurality of initial contour points and the plurality of fixed contour points. According to the method, a plurality of fixed contour points with remarkable characteristics are selected as registration points, so that the problem of unstable contour extraction caused by interactive point selection in a registration process can be solved, and the accuracy of 2D-3D image registration for a multi-bone-block scene is improved.

The invention discloses a 3D printing method for an osteogenesis technology and a personalized box-type titanium plate, and relates to the field of manufacturing of medical instruments, and the 3D printing method specifically comprises the following steps: S1, obtaining and preprocessing three-dimensional data of a jaw bone of a patient; s2, three-dimensional reconstruction and virtual repair of an ideal contour before bone defect; s3, digitally designing the personalized box type titanium plate; s4, the personalized box type titanium plate is manufactured through 3D printing; and S5, clinical application in an operation. According to the 3D printing method for the osteogenesis technology and the personalized box-type titanium plate, the personalized box-type titanium plate can be passively placed in place in an operation, that is, the shape of the personalized box-type titanium plate is naturally matched with a bone defect area, and an ideal bone arch outline can be perfectly recovered after the personalized box-type titanium plate is placed. The dependence on the personal skill of doctors is reduced, the operation result has predictability and repeatability, and the fixing stability of the box-type titanium plate is far better than that of a bone block because the box-type titanium plate is directly fixed on the residual healthy basal bone through the screws.

The utility model discloses a spine endoscope minimally invasive surgery embracing type spike tooth bone grasping forceps, which comprises a first clamping jaw, a second clamping jaw, a fixing rod and a handle, the first clamping jaw is rotatably connected with the second clamping jaw, the second clamping jaw is fixedly arranged at one end of the fixing rod, the handle is arranged at the other end of the fixing rod, and the handle is fixedly connected with the first clamping jaw. The handle is used for controlling the rotating angle of the first clamping jaw relative to the second clamping jaw. According to the embracing type spike tooth bone grasping forceps for the spine endoscope minimally invasive surgery, the opening angle is increased through the first clamping jaw and the second clamping jaw, meanwhile, when a broken bone is grasped, the second clamping jaw is matched with the arched first clamping jaw, the first sharp teeth and the second sharp teeth can stretch into the side face of the broken bone to embrace the bone block, and the broken bone is convenient to grasp.

A tibial plateau posterior lateral fixing device comprises a fixing steel plate and screws. The fixing steel plate comprises a C-shaped steel plate body, a binding face which is formed on the inner side of the C-shaped steel plate body and used for being attached to sclerotin under a tibial plateau articular surface, one or more fixing screw holes formed in the front end of the C-shaped steel plate body, and positioning holes which are formed in the rear end of the C-shaped steel plate body and are opposite to the one or more fixing screw holes. The screws are matched with the one or more fixing screw holes, and the tail ends of the screws can be clamped in the positioning holes; according to the fixing device limited by the application, the injury risk of nerve, blood vessel and tendon caused by a complicated anatomical structure of a conventional rear side approach is avoided; the C-shaped steel plate body can penetrate through a gap between an outer side collateral ligament and a tibial condyle above a fibula head and wrap the rear outer side of a tibial plateau, so that extrusion supporting of a blind area bone block on the rear outer side is achieved; and the two screws are clamped into the rear positioning holes to form a frame structure, so that the fixing device has good mechanical stability.

The present invention discloses a closed reduction device and method for clavicle fracture, comprising a main frame, a fixing mechanism and an adjusting mechanism respectively arranged at two ends of the main frame, and a reducing mechanism movably arranged on the main frame; the adjusting mechanism is slidably connected to the main frame and used to fix the distal end of the clavicle on the affected side, the fixing mechanism is fixedly connected to the main frame and used to fix the proximal end of the clavicle on the healthy side, the adjusting mechanism slides to reduce the distal end of the clavicle on the affected side, and the reducing mechanism is used to correct the position of the proximal bone block on the affected side so that it can dock and reduce with the distal end of the clavicle on the affected side. The two ends of the reducing device are respectively set up at the proximal end of the clavicle on the healthy side and the distal end of the clavicle on the affected side, and the proximal bone block on the affected side is no longer used as the supporting point for setting up the entire device. The displacement of the distal end of the clavicle on the affected side can be pulled by the adjusting mechanism to restore it to its original position, and the proximal bone block on the affected side can also be arbitrarily adjusted by the reducing mechanism so that it can be reduced and docked with the distal end of the clavicle on the affected side, thereby improving the reduction accuracy and treatment effect.

The head and neck bone block blocking and supporting type proximal femur intramedullary nail comprises a main nail body provided with a spiral blade hole and a locking hole, the locking hole is formed below the spiral blade hole, and the axis of the locking hole and the axis of the spiral blade hole form a double included angle; the double included angles comprise a backward angle based on the angle top and an inward angle based on the angle top; a threaded part used for being connected with a screw is arranged in the locking hole, and the threaded part is provided with a front thread allowing the screw to finely adjust the implanting direction within a small angle range and a rear thread in interference fit with the screw. The retention screw is provided with a screw body in threaded connection with the locking hole and a screw tail cap on the screw body, and when the screw body is tightened, the screw tail cap is located outside the head and neck bone block blocking and supporting type proximal femur intramedullary nail and is 5-7 mm away from the front threads. Through double fixation of the locking hole and the special screw, the defect of fixation of an original single spiral blade is overcome, and the fracture end can be effectively prevented from rotating and collapsing.