109 results about "Bone block" patented technology

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 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.

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 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 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 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.

The utility model relates to the technical field of locking steel plates for proximal humerus fracture, in particular to a locking steel plate for proximal humerus greater tuberosity rotator cuff stop point fracture, which comprises a locking steel plate body and a top end fixing component used for fixing a small fracture block of a rotator cuff stop point, the top end fixing assembly comprises a positioning plate integrally connected with the top end of the locking steel plate body, a screw hole and a suture hole which are formed in the positioning plate, and a screw which penetrates through the screw hole to fix the positioning plate and a small fracture block at a rotator cuff dead point on a proximal humerus greater tubercle; the top end fixing assembly is arranged on the locking steel plate body, the positioning plate extends in the direction away from the top end of the locking steel plate body and covers a rotator cuff stop point, and the positioning plate and the top end of the locking steel plate body form an attaching face attached to the proximal humerus greater tubercle. And the firm fixation of the rotator cuff dead point bone block is realized.

A three-dimensional model for demonstrating an osteotomy surgical procedure is provided. The three-dimensional model includes a support, a first bone coupled to the support, and a second bone coupled to the support. The first bone includes a body defining a recess including a surface having an embedded magnet, a removable intermediate bone block disposed within the recess, and a removable surface bone block, disposed within the recess, including at least one embedded magnet. The removable intermediate bone block and the removable surface bone block are associated with the osteotomy surgical procedure.

The invention discloses a bone hammer-shaped finger dead point fixing device, and relates to the technical field of medical instruments. A fixing plate of the dead point fixing device comprises a fixing plate body and a blocking hook protruding towards the side away from the fixing plate body, the fixing plate body is provided with a plurality of screw holes, the blocking hook is of an arc-shaped structure with a preset angle and is used for fixing an avulsion bone block, and a first fixing claw is located on the side, close to the avulsion bone block, of the fixing plate body. The end of the first fixing claw abuts against an avulsion bone block, the second fixing claw is located on the side, close to the extensor tendon and away from the first fixing claw, of the fixing plate body, and the lag screw is arranged to be screwed into the middle phalanx through the screw hole, so that the fixing plate is driven to move towards the tail phalanx when the lag screw is screwed in. The first fixing claw is driven to push the avulsion bone block to move towards the tail end phalanx. The dead point fixing device is used for stably pressurizing and fixing an avulsed bone block and carrying out anti-stretching fixing on an extensor tendon, and rapid healing and functional recovery of a bone tendon dead point are achieved.

The application provides a femoral stem prosthesis for fixing a femoral greater trochanter bone block, relates to the technical field of femoral stem prostheses, and comprises a stem body which is positioned between a femur and a bone block through a group of upper fastening steel wires and multiple groups of lower fastening steel wires, the stem body comprising an upper stem part, a lower stem part and a neck part, the vertical outer contour side of the upper stem part being sequentially connected in a head-to-tail manner and comprising a top inclined contact surface, a reserved surface, an inclined expansion surface, a bottom inclined contact surface and a first adduction arc surface, the top inclined contact surface being connected with the neck part, and the bottom inclined contact surface being connected with the lower stem part; a thickening unit; the thickening unit is used for increasing a hip abduction muscle force arm and serving as a screw mounting base; and an extension part. The steel wire cerclage of the application provides uniform pressure and wrapping fixation of the tension band principle, the locking screw provides direct rigid anchoring and shear / torsion resistance; the strong proximal pulling force generated by the abduction muscle contraction can be effectively resisted, and the risk of proximal displacement of the bone block can be significantly reduced.

The application discloses an individual customized long bone defect filling biomimetic bone block, which has biological compatibility and is a topological optimization structure and comprises a support cylinder, a middle filling body and an inner filling body from outside to inside. The support cylinder is a dense cylindrical structure, has connecting parts for being connected with bone cortices at both ends of the support cylinder, and further has fusion parts at both ends of the inner wall of the support cylinder. The fusion parts are annular and are made of degradable material with a porous lattice structure, and the outer end surface of the fusion part is in contact with the end surface of the connected bone cortex. The middle filling body is arranged in the support cylinder and is filled between the two fusion parts and is made of degradable material. The inner filling body is filled in the middle filling body, and both ends of the inner filling body do not extend into the fusion part. The middle filling body and the inner filling body are stacked by a plurality of porous cell units. The dense non-degradable material and the loose porous degradable material are combined, the mechanical properties are optimized through the topological structure, the growth simulation is realized by using different lattice form characteristics, and the rapid osteogenesis is promoted.

The tibia osteotomy positioner comprises a telescopic rod and further comprises a positioning assembly, an ankle holding device and an inclination angle adjusting assembly which are installed on the telescopic rod, the positioning assembly is used for fixing the end of a tibia, the inclination angle adjusting assembly comprises a base, a rotary knob, a swing rod and an osteotomy block installation plate, the base is arranged on the telescopic rod in a sleeved mode, and the distance between the base and the positioning assembly is adjustable. When the knob rotates, the lower end of the swing rod moves along the arc-shaped groove in the knob, the arc-shaped groove drives the lower end of the swing rod to be gradually away from or gradually close to the rotating center of the knob, and the upper end of the swing rod drives the osteotomy block mounting plate to incline. Adjustment can be carried out according to anatomical forms of different patients, meanwhile, caster angle multi-angle adjusting and positioning can be achieved, the requirements of different patients are met, the adjusting range is large, operation is easy, positioning is accurate, flexibility is high, the visualization space is large, and intraoperative measurement and position adjusting are convenient.

The invention relates to the technical field of medical instruments, in particular to a bone holder for cheekbone fracture reduction and a robot-assisted cheekbone fracture reduction method. The bone holder for reduction of the fracture of the cheekbone provided by the invention comprises a fixed end which is provided with at least one fixing hole and is used for being rigidly connected with a bone block through a fixing piece; one end of the connecting rod is fixedly connected with the fixed end, and the other end of the connecting rod is provided with a connecting structure used for being detachably connected with the tail end of the mechanical arm; and the plurality of registration points are distributed on the surfaces of the fixed end and the connecting rod and are used for performing intraoperative registration through a registration tool. According to the bone holder, the application scene is widened, a stable and reliable connection mode is provided, and the foundation of high-precision registration is laid.

This invention discloses a xenogeneic bone repair scaffold and its preparation method. The preparation method of the xenogeneic bone repair scaffold includes: a pretreatment step: obtaining bone blocks cut from animal bones, decellularizing, washing, and calcining to remove organic components to obtain a basic framework; a perfusion molding step: providing a mixed slurry of collagen, bioactive tricalcium phosphate, and a cross-linking agent, perfusing it into the basic framework under negative pressure vacuum, and freeze-drying to obtain a pre-formed composite xenogeneic bone; and a secondary cross-linking step: immersing the composite xenogeneic bone in a cross-linking agent for secondary cross-linking, and freeze-drying to obtain the xenogeneic bone repair scaffold. This xenogeneic bone repair scaffold completely removes immunogenic substances from the xenogeneic bone material while maintaining excellent water absorption and wetting properties to promote the regeneration of new bone and blood vessels.

The invention relates to the technical field of fracture reduction forceps, in particular to reduction forceps for metacarpal bone comminuted fracture, which comprise a forceps handle I and a forceps handle II, a rotating shaft is mounted at the intersection of the forceps handle I and the forceps handle II, limiting blocks are mounted on the inner sides of the upper ends of the forceps handle I and the forceps handle II, an elastic piece is mounted between the two limiting blocks, and the elastic piece is connected with the rotating shaft. A guide frame is installed on the first plier handle, a fixed plier head is installed at the lower end of the first plier handle, and an adjustable plier head is fixedly installed at the lower end of the second plier handle. The precise adjusting mechanism composed of the telescopic shaft, the ball head unit and the multiple tong head units is arranged in the adjustable tong head, so that a doctor can conduct synchronous or respective precise angle adjustment on the multiple tong head units according to spatial distribution of metacarpal bone comminuted fracture blocks; by means of the mechanical arm, multiple clamping points can be derived from one entry point, multiple bone blocks in different planes and at different angles can be synchronously clamped, the three-dimensional structure of the metacarpal bone is effectively recovered, and the mechanical arm is suitable for complex comminuted fractures.

The invention provides a preparation method and application of a digital plasma matrix bone block, and belongs to the technical field of medical materials. By combining a digital technology and a plasma matrix technology, the personalized plasma matrix bone block with regeneration activity and mechanical strength is immediately prepared in an operation according to the defect condition of a patient. Compared with a traditional bone regeneration scheme, the digital plasma matrix bone block can be shaped immediately in an operation and is matched with a defect area; in addition, the digital plasma matrix bone block has good mechanical strength, and the collapse problem after traditional bone meal transplantation or the exposure problem after a titanium mesh is applied can be avoided; more importantly, the digital plasma matrix bone block has good bone regeneration effects including bone conduction, bone induction, bone regeneration and the like. The digital plasma matrix bone block is more economical for a patient, is convenient for an operator to operate, has good biological safety, and provides a personalized solution for regeneration and repair of bone tissue defects.

The invention relates to the technical field of medical instruments, and discloses a tibia transverse moving device which comprises a traction mechanism, two connecting rod mechanisms connected to the two sides of the traction mechanism, a universal rotating mechanism arranged at the tail ends of the connecting rod mechanisms and a long bone needle clamping mechanism arranged at the tail end of the universal rotating mechanism. Wherein the traction mechanism is configured to drive a bone block to move transversely, the connecting rod mechanism comprises a length-adjustable telescopic unit, and the universal rotating mechanism realizes three-dimensional angle adjustment. Through the synergistic effect of all the components, the surgical suitability and the operation accuracy can be effectively improved.

The present application relates to the medical image processing technical field, specifically to a kind of calcaneus fracture reduction effect dynamic evaluation system based on three-dimensional image.The system obtains the broken bone shape feature of each bone block based on the surface gauss curvature information of bone block, determines the broken bone corresponding to the main bone of fracture by the method of classification and direction correlation analysis, quantifies broken bone index, obtains skeletal region.Using damage eigenvalue, the skeletal region is divided into to-be-registered region and damage region, in combination with the information in damage region, the stress influence direction of to-be-registered region is determined, the extrusion feature and the offset feature of bone block in stress influence direction are obtained, and the initial registration point of bone block is screened out in combination with damage eigenvalue for registration and reduction effect evaluation.The present application classifies the bone block in three-dimensional model effectively, and the initial registration point is screened out for registration by analyzing the situation affected by fracture, so that the registration effect and the accuracy of reduction evaluation are guaranteed.

The invention provides a vibration counterweight dummy for simulating a real person vibration test, and relates to the technical field of vibration environment tests, the vibration counterweight dummy comprises a thoracic vertebra plate, the thoracic vertebra plate, a thoracic vertebra top connecting plate, a shoulder joint plate, a rib plate and a thoracic vertebra bottom connecting plate jointly form a chest assembly; a lumbar vertebra rubber column, a lumbar vertebra force sensor, a lumbar vertebra bottom connecting plate and a lumbar vertebra top connecting plate jointly form a lumbar vertebra assembly. The pelvic bone block, the pelvic bone connecting plate and the leg connecting rod jointly form a hip component; the top of the thoracic vertebra top connecting plate, the outer sides of the two shoulder joint plates and the bottoms of the two leg connecting rods are fixedly provided with balance weight bodies, mass distribution, mechanical response and posture changes of a real person in a vibration environment can be truly simulated through the synergistic effect of structural bionic, precise balance weight, real-time monitoring and safety early warning, and the problem that in a vibration environment test, the vibration environment is poor in vibration performance is solved. The problems that a traditional dummy model is simple in balance weight adjustment, poor in mass center matching and lack of state monitoring, and complex test requirements are difficult to meet are solved.

The utility model relates to a kind of distal radius fracture dorsal bone block fixing system, including palmar side steel plate, several palmar side fixed holes are opened on the palmar side steel plate, still include the dorsal steel plate corresponding with the position of fragmented dorsal bone block, at least one dorsal fixed hole is opened on the dorsal steel plate, the dorsal fixed hole is counterbore, the palmar side steel plate is integrally connected with dorsal steel plate by passing through the internal thread bolt of palmar side fixed hole and dorsal fixed hole and the fixed bolt matched with the internal thread bolt. The utility model can be used for treating distal radius dorsal fracture, to improve the holding force of isolated dorsal small steel plate on bone block by palmar side steel plate, effectively fixed fragmented dorsal bone block;Palmar side dorsal bidirectional locking can be through the degree of tightening to bone block pressurization, and also can avoid the same side arrangement multiple screws to cause bone block comminution.