32 results about "External fixator bar" patented technology

The invention discloses a main rod connecting device of an external bone fixing frame, and relates to the technical field of medical instruments. Comprising fixing rods, steel needles are installed in the fixing rods, universal joints are installed at the opposite ends of the two fixing rods, a shell is arranged between the two universal joints, a grading rotating mechanism is installed in the shell, an adjusting assembly is installed at the lower end of the front side of the shell, and the grading rotating mechanism comprises a baffle. A rotating rod is rotatably connected to the upper end of the barrier plate, a resistance assembly is installed in a second gear, normal joint movement is simulated, the problem that joints of a patient are stiff in all recovery stages is solved, the patient is helped to rebuild motion perception so as to improve the recovery effect, resistance during limb rotation of the patient can be increased step by step, and the recovery effect is improved. Exercise and adaptability to the limbs of the patient are enhanced, the recovery effect of the fracture area of the patient is improved, and growth of callus is promoted.

The application relates to a device for promoting osteogenesis of bone cut ends, a single-side lengthening frame and a Taylor six-axis external fixation frame. The device comprises a first connecting part, a second connecting part, a micro-motion part and a driving assembly. The second connecting part is driven by the micro-motion part to make reciprocating motion along a linear path through the driving assembly, so that the second connecting part and the first connecting part make relative reciprocating motion, promoting osteogenesis of the first bone cut end and the second bone cut end, and the process has high repeatability. By controlling the working parameters of the driving assembly, the parameters of the reciprocating motion of the micro-motion part can be controlled, so that the power promotion process can be accurately controlled.

The application discloses a traction reset external fixing frame assembly, which comprises a main rod, fixing nails and a traction adjusting mechanism, the main rod is provided with an end cylindrical groove, a traction seat is arranged in the end cylindrical groove, an end screw rod of the traction seat is sleeved in the end cylindrical groove, a vertical flat hole is arranged in the middle of the traction seat, shaft holes are arranged in the two side walls of the flat hole, two rotating shafts of an adaptive overturning block are matched and sleeved in the shaft holes of the two side walls of the flat hole, a central through hole is vertically arranged in the middle of the adaptive overturning block, an auxiliary adjusting nail is sleeved in the central through hole, the assembly further comprises a horizontal overturning matched sliding seat, which is provided with a rear arc-shaped hole and is matched and sleeved with a fixing ring, a rear support is fixed to the outer end of the traction seat, a vertical overturning matched locking rod is sleeved in the rear support, the inner end of the vertical overturning matched locking rod is provided with a matched locking hole and is sleeved outside the auxiliary adjusting nail. The components of the traction reset external fixing frame assembly are matched with each other, the corresponding assembly sequence and adjusting structure are arranged, and the function of fixing the external fixing frame under the traction reset condition can be realized.

The application discloses a skull arc motion bone moving external fixing frame, which comprises a threaded flat rod, an extension device connected to one end of the threaded flat rod, connecting rods arranged at the ends of the threaded flat rod and the extension device away from each other, and rotating needle clamps arranged at the ends of the connecting rods, wherein the threaded flat rod is hinged to the extension device, the two connecting rods are perpendicular to the plane where the threaded flat rod and the extension device are folded at an angle, and the rotating needle clamps are coaxially connected to the connecting rods; the threaded flat rod is provided with a sliding block, the sliding block is slidably connected to the threaded flat rod, two advancing nuts are arranged on the threaded flat rod, and the advancing nuts are threadedly connected to the threaded flat rod; the extension device comprises a lead screw, a connecting head arranged at one end of the lead screw, an adjusting knob arranged on the lead screw, and an extension pipe, wherein the lead screw is fixedly connected to the connecting head, the adjusting knob is threadedly connected to the lead screw, the extension pipe is slidably connected to the lead screw, and the extension pipe is coaxially connected to the adjusting knob.

The invention discloses a novel non-bone-penetrating external fixing ring frame which comprises an upper fixing ring used for being fixed to one end of a fracture, a lower fixing ring used for being fixed to the other end of the fracture and a supporting column arranged between the upper fixing ring and the lower fixing ring. The lower end of the supporting column is provided with a second connecting structure used for being connected with the lower fixing ring. The upper fixing ring and the lower fixing ring are each provided with at least two screws which are adjustable in depth and face the circle center. The design that a flat screw is in direct contact with the bone cortex through the upper fixing ring and the lower fixing ring to fix a fracture broken end is adopted, a kirschner wire does not need to penetrate through the bone cortex and a medullary cavity, pain caused by a traditional external fixing frame is avoided, the number of times that a patient enters an operating room in an anesthesia state is reduced, the probability of infection is reduced, and the working efficiency is improved. The treatment cost is reduced, and the economic burden of a patient is relieved.

A tool for implementing a correction plan in an external fixation frame having a plurality of adjustment elements or screws, for example, generally includes a driver, a motor, a controller, and a processor. The driver is adapted to engage and rotate each of the screws. The motor is coupled the driver and adapted to rotate the driver. The controller is connected to the motor and configured to control operation of the motor. The processor adapted configured to: receive correction plan data; receive identification data including information for identifying at least one of the plurality of screws; determine movement of at least one of the plurality of the screws based on the correction plan data and the identification data; and send signals indicative of the determined movement to the controller in order to rotate at least one of the plurality of screws according to a predetermined correction plan.

The utility model discloses an external fixing frame for tibia fracture, and relates to the technical field of medical instruments. The device comprises two fixing rings, a mounting plate is connected between the two fixing rings, a sliding groove is formed in the mounting plate in a penetrating mode, and a plurality of inserting grooves are formed in the opposite sides of the inner wall of the sliding groove in an array penetrating mode in the length direction of the sliding groove; a sliding block in sliding fit with the sliding groove is constructed on the mounting block, and a mounting groove is formed in the mounting block in a penetrating mode; the fixing ring, the mounting plate and the mounting block form an outer fixing frame, the mounting plate is fixed to the leg of a patient through the fixing ring, the kirschner wire is detachably mounted on the mounting block through the needle cylinder, and the position of the mounting block can be adjusted in a sliding mode through insertion fit of the L-shaped block and the insertion groove and sliding fit of the sliding block and the sliding groove; the kirschner wires can be fixed after sliding adjustment, so that the positions of the kirschner wires are convenient to adjust, and meanwhile, the number of the mounting blocks can be increased or decreased according to needs, so that the number of the kirschner wires is increased or decreased, and practicability is improved.

The invention relates to a combined external fixing frame which comprises a base provided with a bottom pressing plate. The primary joint seat is connected with the base; a first-stage pressing plate is arranged on the first-stage joint seat; the second-stage joint seat is connected with the first-stage joint seat; a second-stage pressing plate is arranged on the second-stage joint seat; the bone nail rod is inserted between the base and the bottom pressing plate, between the first-stage joint seat and the first-stage pressing plate or between the second-stage joint seat and the second-stage pressing plate; the bone nail head is in threaded connection with the bone nail rod; wherein a first-stage joint pressing plate is further arranged on the base; the first-stage joint seat extends between the first-stage joint pressing plate and the base; a second-stage joint pressing plate is arranged on the first-stage joint seat; and the second-stage joint seat extends between the first-stage joint seat and the second-stage joint pressing plate. The bone nail rod is in threaded connection with the bone nail head. For patients with different diseases and physiques, the diameter of the bone nail can be adjusted only by changing the size of the bone nail head. And at the moment, the size of the fixing rod for connecting the base, the first-stage joint seat and the second-stage joint seat is not changed.

The utility model provides an orthopedic external fixing frame which comprises a first fixing plate and a second fixing plate, a connecting assembly is arranged between the first fixing plate and the second fixing plate, and mounting assemblies are arranged between the first fixing plate and a fixing needle body and between the second fixing plate and the fixing needle body. The mounting block can be fixed under the cooperation of the connecting screw rod and the limiting block, the limiting teeth can be clamped in the limiting tooth grooves, the situation that the mounting block swings in the using process is avoided, and the first fixing plate and the second fixing plate are movably connected conveniently by arranging the connecting base, the connecting rod and the connecting ball; the first fixing plate and the second fixing plate can be correspondingly adjusted in a swinging mode by medical staff according to requirements, the connecting ball located in the connecting base can be fixed after the locking screw is screwed down, the first fixing plate and the second fixing plate are prevented from swinging in the using process, and the using effect is improved. Therefore, the use stability of the first fixing plate and the second fixing plate is ensured.

The invention relates to the technical field of medical instruments, and discloses an intelligent joint of a planar external fixation frame for the orthopedics department, which comprises an extension side joint body and a flexion side joint body, and further comprises an extension side adjustable joint mechanism and a flexion side angle limiting mechanism, the extension side adjustable joint mechanism comprises a multi-axis linkage assembly arranged in the middle of an extension side joint body and a movable installation assembly arranged on the outer side of the extension side adjustable joint mechanism. The flexion-side angle limiting mechanism comprises a transmission adjusting assembly and an angle limiting assembly which are arranged in the middle of the flexion-side joint body, and a fixed mounting assembly arranged on the outer side of the flexion-side joint body; according to the intelligent joint of the plane type external fixing frame for the orthopedics department, the extension side adjustable joint mechanism and the flexion side angle limiting mechanism are adopted, the intelligent joint can adapt to anatomical differences of extension side joints of different patients, multi-degree-of-freedom movable adjustment of the extension side joints is effectively achieved, and the movable angle of the flexion side joints can be accurately controlled and adjusted.

A bone lengthening auxiliary device with a telescopic mesh support for assisting interosseous growth, on the basis of the current bone lengthening external fixation device, a mesh telescopic support made of magnesium material is fixed between the two ends of the osteotomy by the first bone external fixation needle or steel needle, and the first bone external fixation needle or steel needle for fixation is installed on the external fixation frame. The support can gradually expand with the lengthening of the two ends of the osteotomy, forming a mesh structure, providing a porous mesh support for guiding interosseous tissue regeneration between the two ends of the osteotomy, and improving the osteogenesis efficiency and strength during bone lengthening. The magnesium metal material can be degraded automatically in the later stage, and the degradation process can promote osteogenesis. The bone lengthening external fixation device is simple and convenient to operate during adjustment, with scales to ensure the adjustment accuracy; the support is prepared by 3D printing, which can be designed individually for different patients and different parts of the bone shape, and the mesh pore size can be controlled, with good adaptability and good bone lengthening effect.

The utility model relates to an orthopedics department external fixing frame protection device which comprises a protection sleeve body, the protection sleeve body is provided with a bandage used for binding the protection sleeve body to an orthopedics department external fixing frame, and a first through hole and a second through hole are formed in the two ends of the protection sleeve body in the length direction. The first through hole and the second through hole both penetrate from the upper surface to the lower surface of the protective sleeve body, a first protective cap corresponding to the first through hole is arranged on the upper surface of the protective sleeve body, a second protective cap corresponding to the second through hole is arranged on the upper surface of the protective sleeve body, the lower end of the first protective cap is fixed on the periphery of the first through hole, and the lower end of the second protective cap is fixed on the periphery of the second through hole. The upper end of the first protective cap is a closed end, the lower end of the second protective cap is fixed to the periphery of the second through hole, and the upper end of the second protective cap is a closed end. According to the bone nail protective sleeve, scraping and collision caused by protruding and exposing of the bone nail can be avoided, the protective sleeve body is not prone to slipping forwards, backwards, leftwards and rightwards by means of the limiting effect of the bone nail and the protective sleeve, and upward slipping of the protective sleeve body can be limited through the bandage.

The present application relates to an electric intelligent orthopedic external fixator, comprising a telescopic mechanism, an upper ring, a lower ring, a drive mechanism, and a control mechanism, wherein the telescopic mechanism comprises a sleeve and a screw rod; one end of the sleeve is hinged to the upper ring, and the other end of the sleeve is sleeved on the screw rod; an end of the screw rod away from the sleeve is hinged to the lower ring; the screw rod is provided with an adjustment nut gear; the drive mechanism comprises a motor, an output shaft, and a circuit board; the motor drives the output shaft; the output shaft is provided with a driving gear; the driving gear is engaged with the adjustment nut gear; the circuit board is connected to the motor; the control mechanism is disposed on the upper ring, and the control mechanism is connected to the drive mechanism, wherein the screw rod is provided with a target object; the drive mechanism further comprises a sensor; the circuit board is connected to the sensor; the sensor detects the target object. The present application provides the target object on the screw rod for detection by the sensor, thereby directly obtaining the telescopic length. In addition, the sensor and the motor are directly controlled by means of the circuit board, which greatly reduces the number of cables between the control mechanism and the drive mechanism.

The invention discloses a neurosurgery ventricular puncture positioning external fixing frame, and relates to the technical field of medical equipment, in particular to a neurosurgery ventricular puncture positioning external fixing frame which comprises an arc-shaped positioning base, a bonding layer is arranged at the lower end of the arc-shaped positioning base, an elastic bandage is arranged at the side end of the arc-shaped positioning base, and the arc-shaped positioning base is used for being fixed to the head of a patient. The upper end of the base is provided with a sliding guide rail sliding in the direction of the center line or the coronary seam, and the guide rail is fixed through a locking structure. The inner side of the guide rail is connected with a puncture needle fixing sleeve through an angle adjusting clamp, and the angle adjusting clamp can adjust and lock the angle of the puncture needle, so that the puncture needle can be accurately aligned with target positions such as an external auditory canal connecting line, a hairline or a position 2cm in front of a coronary suture and a position 3cm beside a midline. A replaceable elastic lining is arranged in the puncture needle fixing sleeve so as to be matched with puncture needles of different specifications. A scale area is arranged on the surface of the base, and the angle adjusting clamp is integrated with an angle dial, so that accurate positioning and reproduction are facilitated. The device is stable in structure, easy and convenient to operate and capable of effectively improving the puncture precision and safety.

The utility model provides an external fixing device for treating metacarpal neck fracture, which comprises a fixing rod, and adjusting rods are inserted into two ends of the fixing rod. The needle tails of the kirschner wires are of upward bending structures, so that the kirschner wires are connected with the fixing frame, a fracture part can be more firmly fixed, stable support is provided, a kirschner wire fixing mode and an external fixing frame fixing mode can be combined, the advantages of the kirschner wire fixing mode and the external fixing frame fixing mode are integrated, corresponding defects of the kirschner wire fixing mode and the external fixing frame fixing mode are avoided, and the kirschner wire fixing mode is more convenient to use. Early movement of joints can be allowed while firmer fixation is provided, the treatment time is shortened, the treatment effect is improved, a soft cushion layer is formed at the joint of the kirschner wire and the fixing frame through the rubber sleeve, direct contact between the kirschner wire and the fixing frame is reduced, and therefore discomfort of a patient is relieved; and the rubber sleeve can absorb external impact and vibration to a certain extent, so that the influence of the external impact and vibration on the fracture part is reduced, and the rehabilitation of the patient is facilitated.

Disclosed herein are external fixation frames for correcting bone deformities. The external fixation frames include a top fixation ring and a bottom fixation ring coupled to one another by at least two struts. A half ring is coupled to bottom fixation ring. The bottom fixation ring is u-shaped. One or more rocker members may be coupled to the bottom fixation ring. The half ring may be hingedly coupled to the bottom fixation ring such that it can rotate with respect to the bottom fixation ring from a first position to a second position.

The invention relates to the technical field of medical auxiliary instruments, in particular to an iliolumbar fixing device for sacroiliac joint fracture dislocation, which comprises a pelvic external fixing frame with an arc-shaped structure and a sacroiliac screw, an arc-shaped sliding groove is formed in the pelvic external fixing frame, and a locking seat is slidably connected in the arc-shaped sliding groove; a locking assembly used for limiting the locking seat to slide in the arc-shaped sliding groove is arranged on the locking seat, and an extension nail is integrally formed at the tail part of the sacroiliac screw; a universal fixing assembly and a universal limiting assembly are sequentially arranged on the extension screw in the axial direction of the extension screw, and the universal fixing assembly is used for fixing the implantation depth of the sacroiliac screw; a universal joint is further arranged on the locking seat, and the universal limiting assembly is used for achieving self-adaptive adjustment and rigid locking of the sacroiliac screw puncture angle; the depth and angle of the sacroiliac screw are limited and fixed through the universal fixing assembly and the universal limiting assembly, and the problem that the mechanical property of an existing device is weakened due to the fact that the degree of freedom is improved is solved.

The utility model relates to the technical field of adaptive stress bone external fixation frame production, in particular to an arc degree detection device on an adaptive stress bone external fixation frame. The utility model aims to provide a device for detecting the arc degree of an adaptive stress bone external fixation frame, namely a device for detecting the arc degree of the adaptive stress bone external fixation frame, which comprises a detection table, a depth dial indicator, a matching table, a supporting table, a strip-shaped pressing block and a lamp strip, and is characterized in that the matching table is mounted on the upper surface of the detection table; the upper surface of the matching table is provided with a plurality of semicircular through grooves which are different in diameter and matched with the metal intramedullary needle, the upper surface of the supporting table is provided with a pressing threaded hole and a supporting threaded hole, a supporting bolt is arranged in the supporting threaded hole in a matched mode, the depth dial indicator is installed on the detection table, and the lamp strip is installed on the detection table through the lamp strip fixing base. The detection device is simple in structure, high in universality, convenient to operate and low in cost.

A method of correcting a bone deformity or reducing a bone fracture with an external fixator. The method comprises uploading a first set of x-rays to a computer program, characterizing geometry of a bone deformity with the program, recommending frame geometry for correcting the deformity, then after surgery uploading a second set of x-rays with fixator attached, characterizing geometry again, calculating fixator adjustments necessary to align bones, and providing proposed fixator positions.

The utility model relates to the technical field of medical instruments, and discloses an adjustable external fixing frame for phalanx fracture. The adjustable external fixing frame for phalanx fracture comprises a first fixing frame, a second fixing frame is arranged on one side of the first fixing frame, and a positioning structure is arranged on the first fixing frame. Through the arrangement of the sliding blocks, the adjusting grooves and the first bolts, the sliding blocks with the corresponding number are inserted between the first fixing frame and the second fixing frame according to the number of kirschner wires needing to be used, and the sliding blocks are movably adjusted on the inner sides of the first fixing frame and the second fixing frame and move up and down to adjust the height; when the kirschner wire is used, the two ends of the kirschner wire rotate up and down to adjust the inclination angle, after adjustment, the first bolt is screwed into the adjusting groove in the corresponding position and continues to go deep till the sliding block is clamped, the sliding block is fixed to the inner side of the first fixing frame and the inner side of the second fixing frame, and the adjusted kirschner wire can be stably inserted into the phalanx of a patient to be limited and supported.

The invention discloses a modular tensegrity bone recovery device based on a flexible middle platform. The modular tensegrity bone recovery device comprises an upper rigid ring unit, a lower rigid ring unit, a flexible middle platform unit and a driving control system. The upper rigid ring unit and the lower rigid ring unit are symmetrical in structure and comprise rigid ring discs, a plurality of rigid pressing rods and lateral driving cables, the flexible middle platform unit is connected through a plurality of independent node blocks to form a closed ring and form an elastically-deformable middle connecting network, and the two ends of the rigid pressing rods are connected with the rigid ring discs and the node blocks through spherical hinges. The lateral driving cable penetrates through an inner cavity of the pressing rod and is connected with the annular disc and the built-in miniature electric push rod. By independently controlling each miniature electric push rod, changing the length of the lateral driving rope and driving the upper rigid ring disc and the lower rigid ring disc, three-dimensional space pose adjustment and self-adaptive deformation of the flexible middle platform are achieved, and axial pressurization, multi-angle orthopedic and dynamic micro-motion stimulation are achieved for a fracture broken end; the problems that a traditional external fixing frame is single in adjusting function and lacks biological adaptability are solved.

The utility model discloses a skin pressure stabilizer applied after an external fixation frame operation. The skin pressure stabilizer comprises an external fixation frame assembly. The pressure stabilizing assembly comprises a fixing plate, a fixing circular ring, a supporting rod, a baffle ring, a first telescopic spring, a supporting circular ring and an air cushion; the fixing plate is clamped to the outer side of the outer fixing frame body, the fixing ring is fixedly connected to the inner side of the fixing plate, the supporting rod penetrates through the two sides of the fixing ring and extends outwards, the baffle ring is fixedly connected to the outer surface of one end of the supporting rod, and the first telescopic spring is fixedly connected to the outer side of the baffle ring. The position of a supporting rod in a fixing circular ring is moved, the supporting rod is fixed through a nut, the supporting rod drives a baffle ring and a first telescopic spring to apply outward pressure to a supporting circular ring, the supporting circular ring applies outward pressure to an air cushion, and therefore the air cushion can be attached to the outer surface of the skin; and the skin is continuously and stably pressed down, so that friction between skin muscles and the steel needle is avoided.

The invention relates to the technical field of medical instruments, in particular to a fibula transverse bone carrying external fixing frame device which comprises a fixing nail, a traction structure is arranged on the fixing nail, a fixing structure is arranged on the traction structure, a positioning structure is connected to the end of the traction structure, and an adjusting structure is connected between the positioning structure and the traction structure. A fastening structure is arranged on the traction structure, and a stabilizing structure is arranged on the side face of the traction structure. Different supporting angles can be selected according to different conditions of tibiofibula of a patient through the traction structure, the distance between two fixing nails can be adjusted according to needs through the fixing structure, and steel nails for traction can be conveniently and rapidly fixed and dragged through the positioning structure. The traction distance of the bone slice can be adjusted through the adjusting structure, the installation accuracy of the traction nail is improved, the fibula slice and the traction nail can be conveniently fixed through the fastening structure, the overall stability of the support can be improved through the stabilizing structure, and the discomfort of a patient is reduced.

The present application relates to the field of orthopedic medical devices, in particular to an orthopedic adjusting rod and external fixation frame system. The orthopedic adjusting rod comprises a rod body extending in the up-down direction and a ball head arranged at the upper end of the rod body, a shell is sleeved on the ball head, a locking rod is screw-mounted on the shell, a pressing piece is arranged between the locking rod and the ball head, the pressing piece has a fitting part and a deformation part, the fitting part is fitted with the ball head, the deformation part has a space with the ball head, and the locking rod is pressed at the position of the deformation part. The rod body can be adjusted in angle through the ball head in the shell, after adjustment, the locking rod is tightened, the locking rod moves downward to apply a pressing force to the pressing piece, the deformation part of the pressing piece is deformed under the action of the pressing force to increase the fitting area with the ball head, so that the friction between the pressing piece and the ball head is increased to provide sufficient locking force to prevent loosening of the ball head.

The single-arm multifunctional bone fracture external fixation frame comprises a ball head nail clamp, a first connecting base, a second connecting base, a connecting rod assembly and a fixed bone nail; two ends of the connecting rod assembly are connected with the first connecting base and the second connecting base respectively; the first connecting base and the second connecting base are each connected with the ball head nail clamp and are connected in a spherical hinge connection mode; the ball head nail clamp is used for clamping the fixed bone nail; the connecting rod assembly comprises a plurality of connecting rods and a locking mechanism, can provide relative rotation and sliding between the connecting rods in multiple directions, and realizes adjustment and fixation of the angle and position between the connecting rods through the locking mechanism. The application can adapt to the fixing requirements of various bone fractures and is simple to operate, and is suitable for emergency treatment scenes such as disaster relief and wartime.

Disclosed herein are strut attachments for external fixation frames. The strut attachments provide solutions for frame configurations in which it is not possible to attach a strut at its ends to corresponding rings. The strut attachments may be considered an outrigger type of mechanism that achieves more travel out of completely collapsed struts. The strut attachments, each having a pivot and a hinge joint, allow a strut to be attached on the level of a first ring and extend at least partially proximally or distally to a second ring depending on the frame of reference of the ring system. These strut attachments may be used when the fully collapsed length of the strut will not allow the rings to get any closer to one another than is needed or proscribed. In such cases, the strut attachments allow for even tighter ring to ring distance.

The invention belongs to the technical field of bone transport, and particularly discloses an internal fixation bone transport system integrating high-precision track guiding and non-cutting technologies. According to the internal fixation bone moving system, the internal fixation steel plates are fixed to healthy bone shafts at the upper end and the lower end of an osteotomy block, then bone screws penetrate through the fixing holes to connect the sliding blocks with the osteotomy block, and under the reversing action of the pulleys, the traction adjusting mechanism pulls the lower titanium cable to drive the sliding blocks to move, so that the osteotomy block can be moved; in the process, only the through pipe penetrates out of the skin tissue, other parts are all located in the skin tissue, secondary injury to a patient in the moving process is effectively reduced, bone moving is completed in the body, the patient does not need to wear an external fixing frame for moving for a long time, and the comfort level of the patient is improved while the appearance is attractive. And an upper titanium cable and a lower titanium cable are arranged, the sliding block can move upwards or downwards, and when the moving amount is too large, the osteotomy block can be retreated, so that the moving operation is safer and more accurate.

An external fixation system includes first and second fixation members having first and second pluralities of mounting holes, respectively. The first and second plurality of holes are configured to receive first and second ends of a plurality of struts, each strut having a default or initial mounting position. A simulation of the correction may be performed with the struts in the default positions, but it may be determined that the correction is not achievable. Additional simulations of the correction may be performed with the ends of the struts in different mounting positions to determine if other mounting positions of the struts allow the correction to be completed. During the correction, if one of the struts reaches a maximum length, it may be disconnected and reconnected to a different mounting hole so that, after being reconnected, the strut may be further increased in length to continue the correction.

The invention discloses an instrument for assisting resetting of an external fixing frame, which comprises a handle, two oppositely arranged swing arms are rotatably arranged on the handle, a first locking piece is arranged between each swing arm and the handle, the first locking pieces can lock the relative positions of the swing arms and the handle, and the first locking pieces can lock the relative positions of the swing arms and the handle. Each swing arm is provided with a clamping groove used for containing a Sjos needle, each clamping groove is provided with a second locking piece, and the second locking pieces can lock the Sjos needles in the clamping grooves. The invention aims to provide an instrument for assisting the reduction of an external fixing frame, and the instrument can be used for holding Sirschner wires on two sides of a fracture broken end in an external fixing frame fixation operation so as to reduce the two sides of the fracture broken end.

1. The name of this design product: external fixator. 2. Application of this design product: for external fixation in orthopedics. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.