41 results about "Ulna" patented technology

The invention discloses a probe and a chip for screening genes related to limb development defects and application of the probe and the chip, belongs to the technical field of biomedicine, and provides the probe for screening the genes related to the limb development defects. The limb development defect related genes comprise a polydactylia related gene, a concomitant deformity related gene, a giant finger / toe disease related gene, a short finger / toe disease related gene, a polyarticular contracture disease related gene, a hand and foot deformity related gene and a congenital ulna and radius fusion related gene; the probes have nucleotide sequences as shown in SEQ ID NO. 1 to SEQ ID NO. 802. According to the invention, 140 genes corresponding to limb development defects are taken as target genes, probes are designed, and a gene sequencing chip is constructed, so that the detection rate is improved, the sequencing price is reduced, the cost performance is improved, and the method can be applied to clinical gene detection on a large scale and has a good effect.

The utility model belongs to the technical field of medical instruments, and particularly discloses a TFCC repair suture tool which comprises a handle, a connecting handle arranged at the tail end of the handle, a traction needle connected with the connecting handle and a needle hook at the tail end of the traction needle. The head end of the traction needle is detachably connected with a positioner, a plurality of positioning holes with the center lines pointing to the needle hook are evenly formed in the positioner, and guide cylinders are detachably connected into the positioning holes. A cavity is further formed in the connecting handle, and a rotation control component for adjusting the included angle between the traction needle and the handle is arranged in the cavity. After the suture line enters the joint, the needle hook hooks the triangular fiber cartilage complex, a kirschner wire is guided in through the guide cylinder on the positioner to conduct ulna perforation, the ulna perforation corresponds to the leading-out end of the suture line, the suture line can be led out quickly, and the operation efficiency is improved; in addition, under the arrangement of the rotating control part, the included angle between the handle and the traction needle can be adjusted to be suitable for the current force application angle, and the hand burden of medical staff is reduced.

The invention provides a wrist closed-loop peripheral nerve electrical stimulation method and system, and relates to the technical field of nerve regulation and wearable medical instruments.The method comprises the steps that physiological signals and wearing state information of the radial styloid process, the ulna styloid process and the wrist transverse grain midpoint of the wrist are obtained, and the reference range and the dynamic calibration boundary of stimulation parameters are obtained; based on the reference range and the dynamic calibration boundary, determining a structural relationship according to the position data of the radial styloid process, the ulna styloid process and the wrist cross grain midpoint of the wrist, and performing regional characteristic analysis on the structural relationship to obtain an analysis result; and calculating geometric characteristics in the regional characteristic analysis result to obtain a geometric moment quantification result of the region. According to the invention, an individual parameter setting, closed-loop online updating and long-term maintainable engineering system is realized.

The application discloses a multifunctional electronic assisting device and relates to the technical field of electronic assisting devices, which comprises a glove, a ulna connecting sleeve connected to one end of the glove, a radius connecting sleeve connected to one end of the ulna connecting sleeve, an elbow joint protective cover fixedly connected to one end of the radius connecting sleeve, and a humerus connecting sleeve fixedly connected to one end of the elbow joint protective cover. When the driving rod slides in the spiral groove, the transmission bar can be lowered, and the piston rod can be lowered synchronously in the process, so that the air in the piston cylinder is filled into the inside of the inflatable cotton through the inflation pipe, the elbow is assisted in the process of rapid expansion of the inflatable cotton, and the elbow is protected, so that the elbow is prevented from being injured due to the elbow being supported on the ground due to the instinctive reaction when a person falls down during the use of the device. The elbow joint protective cover is thickened in the process of expansion of the inflatable cotton, so as to play a buffering role on the elbow.

The application discloses a postoperative adjustable nursing support device for children, and relates to the technical field of medical devices.The size arm supporting and clamping mechanism comprises a small arm supporting plate and a circular arc supporting plate, two supporting plates one are arranged on the front and back sides of the left end of the small arm supporting plate, one side of the two supporting plates one away from each other is fixedly connected with one end of two longitudinal adjusting shafts, two supporting plates two are arranged on the front and back sides of the bottom of the circular arc supporting plate, the two supporting plates two are rotationally connected with corresponding adjusting shafts, the top of the circular arc supporting plate is fixedly connected with the bottom of a large arm binding plate, and the outer side of the large arm binding plate is provided with a large arm binding assembly; the postoperative adjustable nursing support device for children further comprises a size arm angle adjusting mechanism, a ulna and radius state limiting mechanism and a ulna and radius clamping mechanism, the relative position of the ulna and the radius in the small arm can be limited in the early postoperative period, and the elbow protection mechanism can prevent the elbow joint bending point from being bumped.

The utility model discloses an ulna coracoid process bone fracture plate through anterior approach, bone setting of ulna coracoid process is achieved through anterior approach, the bone fracture plate is of a T-shaped structure, the total length of the bone fracture plate is smaller than 2.5 cm, the bone fracture plate comprises an adaptive plate and a fixing plate which are in angle connection, the adaptive plate is located above the fixing plate, the adaptive plate is used for being matched with a far-end lateral column of the ulna coracoid process, and the fixing plate is used for being matched with the far-end lateral column of the ulna coracoid process. The adaptive plate comprises a positioning hole and suture holes formed in the two sides of the positioning hole; the fixing plate is narrower than the adaptive plate, an adjusting hole and a fixing hole are formed in the fixing plate, the adjusting hole is located between the positioning hole and the fixing hole and used for achieving adaptive adjustment of the bone fracture plate and the far-end outer side column, and the total length is the total distance between the top end of the adaptive plate and the bottom end of the fixing plate. According to the bone fracture plate, the matching stability of the bone fracture plate and the front portion of the elbow joint after bone fracture is improved, stimulation to local soft tissue is reduced, the contact area between the bone fracture plate and ulna coracoid processes is increased, the fixing strength between the bone fracture plate and the ulna coracoid processes is improved, the postoperative healing effect is improved, and the stress fracture risk is reduced.

The utility model belongs to the technical field of medical apparatus and instruments and provides a radial artery intervention operation compression hemostat, including support plate, bandage, compression hemostat mechanism, radial bone clamping plate and ulna clamping plate, radial bone clamping plate top end rotation connection is in support plate left end, and ulna clamping plate top end sliding is established in support plate right -hand side, and the bottom surface of support plate right -hand side is provided with the vertical board, and the vertical board is provided with the screw rod in screw connection, and radial bone clamping plate bottom end and ulna clamping plate bottom end all are set up strip -shaped bushing, and the right end of bandage is fixed in ulna clamping plate bottom end, and its left end bottom surface is provided with magic tape hair surface and magic tape hook surface at intervals. The compression hemostat can use radial bone clamping plate and ulna clamping plate to clamp radial bone and ulna from both sides of wrist to position, and bandage does not contact with the back of wrist, so that the bandage does not cause compression to the back of wrist vein, and the compression hemostat is not easy to rotate around the wrist axis, and the installation structure is relatively stable, and the probability of displacement of compression hemostat mechanism and puncture point compression failure can be reduced.

The utility model relates to a cushion block capable of preventing ulnar nerve injury, which comprises a body, the body is in a rectangular block shape and is made of soft materials, and the upper end face of the body is provided with a groove-shaped clamping groove. The cross section of the clamping groove is in a circular arc shape, the clamping groove penetrates through the body in the axial direction of the clamping groove, and the arm near the olecranon of the ulna of a patient can be placed in the clamping groove. The two bodies are used in pairs and are respectively padded below the ulna and humerus in front of and behind the olecranon of the ulna of a patient, so that the olecranon of the ulna is separated from the hand placing plate, the ulna nerve at the olecranon is decompressed, and the ulna nerve is prevented from being damaged due to long-time compression. In addition, standardized operation and management are facilitated, and favorable conditions are created for improving operation quality.

The invention relates to the technical field of teaching instruments, and provides a joint training model to solve the problem that the palpation training effect of trainees is poor due to the fact that a current joint model cannot simulate the real pathological hand feeling. The device comprises a simulated humerus, a simulated ulna and radius and a simulated muscle connecting the simulated humerus and the simulated ulna and radius. One end of the simulated ulna and radius is provided with a glenoid fossa, and the glenoid fossa comprises a mounting seat connected with the end part of the simulated ulna and radius, a rough surface fossa layer arranged at one side of the mounting seat, a sliding rod arranged at one side of the rough surface fossa layer, a compression spring sleeving the sliding rod, and a sliding surface fossa layer arranged at one end of the sliding rod; one end of the simulated humerus is provided with a humerus head, the surface of the humerus head is a spherical surface, and the humerus head is coated with a joint capsule; through the adjustable joint fossa structure and the inflatable joint capsule, pathological signs of friction feeling of cartilage abrasion and stiffness feeling of joint capsule contracture are simulated respectively, and quantifiable and repeatable palpation training conditions are provided for students.

The utility model provides a wrist guard with a pressurizing gasket. The wrist guard is provided with a main body, two bandages, the pressurizing gasket and a first fixing piece, the main body is provided with a first end, a second end and two through holes. The first end and the second end are opposite ends of the main body. The through hole is formed in the second end. The bandage is formed at the first end of the body. The pressurizing gasket is detachably arranged on the main body and located between the first end and the second end. The first fixing piece is arranged between the main body and the pressurizing gasket, and the pressurizing gasket is detachably arranged on the main body through the first fixing piece. When the wrist guard with the pressurizing gasket is worn on the wrist, the main body and the bandages are used for surrounding the wrist, the two bandages penetrate through the two penetrating holes respectively, and the pressurizing gasket corresponds to the ulna side of the wrist in position. The compression pad can apply pressure to the ulna side of the wrist, thereby improving the stability of the ulna side and providing additional support to the ulna side.

The utility model discloses a buckling type distal radius fracture splint device, and belongs to the technical field of orthopedic fixing devices. The first soft plate is arranged on the palm side at the far end of the radius in an attached mode, and the whole first soft plate extends out of the wrist from the arm; the first clamping plate is arranged on the outer side of the first soft plate, the whole first clamping plate extends from the arm to exceed the wrist, the part, exceeding the wrist, of the first clamping plate is bent upwards, and the tail end of the first clamping plate abuts against the palm side so as to provide downward compression force for the palm side; the second clamping plate is arranged on the radial side of the distal radius in an attached mode, the second clamping plate integrally extends out of the wrist from the arm, and the tail end of the second clamping plate abuts against the radial side of the hand, so that acting force towards the ulna side is generated; and the fixing piece is used for fastening and positioning the soft plate and the clamping plate. According to the buckling type distal radius fracture splint device, related complications such as soft tissue scars caused by gypsum wrapping and clamping of a fracture fixing part can be reduced.

The invention relates to the technical field of ulna and radius reduction, and discloses an ulna and radius reduction device for bone surgery and a using method thereof.The ulna and radius reduction device comprises a base, a support is fixedly connected to the side wall of the base, two sliding blocks are slidably connected to the top of the base, and bandages are fixedly connected to the tops of the sliding blocks. A medical worker exerts pulling force on the palm position, the palm and the top end of the front arm are pulled to drive a bandage to move, a sliding block moves synchronously, when the sliding block moves, a sliding toothed bar is driven to move, a gear is driven to rotate while the sliding toothed bar moves, and when the gear rotates, the movable toothed bar moves along with the sliding toothed bar; by means of the structure, the binding band at the tail end of the forearm and the sliding block move, the same force can be applied to the tail end of the arm while pulling force is applied to the front end of the arm of a patient, and accurate alignment of the fracture end can be effectively guaranteed by maintaining the force which is constant in size and horizontal in direction.

The invention relates to the technical field of medical informatization, and discloses a construction system for an orthopedic surgery analysis model, which comprises the following steps: acquiring original tomography data, and carrying out resampling and isotropic filtering processing on the original tomography data to obtain standard forearm three-dimensional image data; performing semantic recognition processing on the standard forearm three-dimensional image data to obtain a Boolean skeleton matrix; the positioning module is used for performing fracture surface positioning processing based on a Boolean skeleton matrix to extract fracture surface parameters; the skeleton processing module is used for performing skeletonization processing on the Boolean skeleton matrix to extract a radius center line and an ulna center line, and determining a functional rotation axis based on the radius center line and the ulna center line; and projecting the radius center line to the functional rotation axis to obtain a projection curve, and performing curvature analysis processing on the projection curve to obtain a radius arch top coordinate.

The utility model discloses a convenient-to-operate ulnar radial fibular intramedullary nail which comprises a nail body, a guide hole groove is formed in the nail body, a strip-shaped hole is formed in one side of the middle of the nail body, a hammering auxiliary rod is arranged in the guide hole groove, an auxiliary guide block is arranged in the strip-shaped hole, and an auxiliary handle rod is installed on one side of the auxiliary guide block. And a counter bore is formed in the bent part of the external end part on the nail body. The bone nail is reasonable in design, the guide hole groove is formed in the nail body, the hammering auxiliary rod capable of being placed in the guide hole groove is combined, a force application hammering point is provided for nailing an inner nail, the problem that force application is inconvenient due to the fact that the inner nail is nailed into a bone body is solved, meanwhile, the auxiliary guide block located at the end of the auxiliary handle rod extends into the arranged strip-shaped hole, and therefore the bone nail is convenient to use. An operator can conveniently position the nail head of the inner nail, and the inner nail is guided and assisted to be stably implanted.

The present invention relates to an implant for arthrodesis of an elbow comprising at least a humeral section, an ulnar section and a transition region connecting the humeral and the ulnar section, wherein the implant has a specific surface relationship between the ulnar and humeral sections and a specific orientation of these surfaces to one another.

The invention relates to a bone age evaluation method by a bone age evaluation device. The bone age evaluation method comprises the following steps: (a) acquiring an X-ray image of the side surface of an elbow; (b) segmenting an olecranon region from the X-ray image; (c) analyzing the morphological characteristics of the olecranon ossification center in the segmented olecranon ossification area; and (d) determining the bone age based on the analyzed morphological characteristics.

The present invention discloses a humanoid robot based on pneumatic actuators, belonging to the field of robots. The movement of each joint is driven by pneumatic actuators, and it mainly consists of the humerus, radius, ulna, pneumatic muscles, cylinders, connecting pieces, control systems, etc. Four parallel pneumatic muscles of the shoulder joint drive the shoulder joint. The humerus is divided into two segments, and the two segments are connected by a cylinder; a group of shoulder-elbow joint pneumatic muscles are respectively connected to the connecting piece of the shoulder joint and the radius and ulna, which can not only drive the movement of the elbow joint, but also drive the shoulder joint together with the pneumatic muscles of the shoulder joint; four parallel ones drive the forearm, and the radius and ulna are respectively connected to two of them, both of which are connected to the wrist joint connecting plate. The radius and ulna are designed into two segments and are connected by a cylinder in the middle. The present invention is driven by pneumatic muscles and cylinders, and has the characteristics of compact structure, large working space and multiple degrees of freedom of movement, and can be used for experimental teaching, circuit demonstration and fault repair.

The utility model aims at providing a ulna tunnel positioner, it includes guide main body, positioning main body and locking piece, guide main body includes handle, first guide block and second guide block, first guide block sets up in one end of handle, has seted up first guide hole on first guide block, second guide block sets up in the middle of handle, has seted up second guide hole on second guide block, positioning main body includes slide and positioning hook, positioning hook sets up in one end of slide, slide is worn in first guide hole, to make the end of positioning hook away from slide be located on the extension line of the axis of second guide hole, locking piece is screwed on one end of handle close to first guide hole, locking piece is used for top contact slide. Thus, slide can slide in first guide hole, can adjust the position of positioning hook according to the anatomical structure of different patients ulna, has improved the accuracy of positioning, has adapted individual difference, and can improve the accuracy of tunnel positioning, has reduced the operation error caused by inaccurate positioning.

The application discloses an automatic elbow extension and flexion teaching device based on bone joint and muscle simulation, and relates to the technical field of elbow extension and flexion teaching.The device comprises a skeleton simulation part, a muscle simulation part, a base, a support rod, a top plate, a fixing mechanism, a driving mechanism, an electronic universal watch and a processing module.The skeleton simulation part, the muscle simulation part, the fixing mechanism and the driving mechanism are all assembled on the support frame formed by the support rod and the top plate.In the application, the flexible support frame is integrally designed with the humerus simulation part and the ulna and radius simulation part, and the movable elbow joint is formed by the fish line penetrating through the through hole, so that the human elbow joint anatomical structure and the 0-150-degree physiological activity range are accurately restored.The muscle simulation part is filled according to the human muscle shape, and is accurately attached to the first magic tape and the second magic tape, so that the muscle and the skeleton are quickly assembled, and the user can directly observe the linkage relationship between the skeleton and the muscle.

A plate configured to support a bone extends longitudinally to define a proximal end and a distal end opposite the proximal end. The plate includes a first surface and second surface opposite the first surface. At least a portion of the first surface is configured to contact a surface of the bone. The plate includes openings spaced apart from one another along the plate. Each of the openings defines a fastener insertion axis for a fastener to be inserted therethrough. The plate includes apertures that are each adjacent to at least one of the openings. Each of the apertures defines a stabilizer insertion axis for a stabilizer to be inserted therethrough. The first surface of the plate is shaped to contour to a portion of the surface of the bone that extends along at least one of a epiphysis, a metaphysis, or a diaphysis of the bone.

Disclosed are surgical constructs, assemblies, and methods for the repair and reconstruction of the elbow. The rotation center guide has specific dimensions configured to be fixed to either the lateral or medial side of the elbow. At one end, the guide is provided with multiple full concentric through-holes (circles of different diameters) having bisectors at 90-degree intervals to identify the rotation center on the lateral and medial epicondyles. At the other end, the guide is provided with a linear pattern of through-holes or openings located around the centerline of the guide. The linear pattern of through-holes identifies the attachment point on the ulnar tubercle. The through-holes in the concentric and linear patterns of the guide are sized to receive instruments such as K-wires, guides, and / or drill guides. One or more spikes or points are provided at the bottom of the guide for stabilization during use.

A plate configured to support a bone extends longitudinally to define a proximal end and a distal end opposite the proximal end. The plate includes a first surface and second surface opposite the first surface. At least a portion of the first surface is configured to contact a surface of the bone. The plate includes openings spaced apart from one another along the plate. Each of the openings defines a fastener insertion axis for a fastener to be inserted therethrough. The plate includes apertures that are each adjacent to at least one of the openings. Each of the apertures defines a stabilizer insertion axis for a stabilizer to be inserted therethrough. The first surface of the plate is shaped to contour to a portion of the surface of the bone that extends along at least one of a. epiphysis, a metaphysis, or a diaphysis of the bone.

A prosthesis (1) of an amputated limb for a pet is disclosed, wherein: it comprises a main body (2) extending longitudinally, which is hollow, which is made in a single piece and which is shaped to receive a stump (3) of an amputated limb (4); the main body (2), in turn, comprises: a first part (5) extending along a first axis (A1) and forming a tubular structure; a second part (6) extending along a second axis (A2) and having a first opening (7); it comprises an end (8) which is connected to the first part (5) and which comprises an external surface (9) arranged to contact the ground during the use of the prosthesis (1) of the limb. Furthermore: the prosthesis (1) of the limb comprises anchoring means (10) which are carried by the second part (6) and which are arranged to anchor the stump (3) of the amputated limb (4) and the main body (2) to each other; the first part (5) and the second part (6) are angularly arranged with respect to each other so that the second part (6) laterally embraces part of the radius and ulna bones of the anterior amputated limb (4) or part of the tibia and fibula bones of the posterior amputated limb (4), and the first part (5) receives the stump (3) of the amputated limb (4) during the use of the prosthesis (1) of the limb.

The invention provides a bone plating system provides combined bone fixation and adjustable soft-tissue reattachment through an integrated, knotless tensioning construct. The system includes a bone plate having screw holes for bone fixation and one or more integrated suture pathways formed by holes, tunnels, or slots that guide a flexible member through the plate. The flexible member includes a series of integrally formed loops spaced along its length, each configured to engage a cleat or anchor feature on the bone plate. Engagement of a selected loop enables the surgeon to apply and maintain a desired level of soft-tissue tension without manual knot-tying. The cleat or anchor may incorporate a hook-and-ramp or snap-fit design that provides self-locking engagement under physiological loading. The system allows reproducible, incremental tension control, reduces operative time, and enables low-profile, knotless fixation adaptable for various anatomical locations including the ulna, patella, and humerus.

The invention discloses an adjustable nursing supporting device after a child operation, and relates to the technical field of medical instruments, a large and small arm bearing and clamping mechanism comprises a forearm supporting plate and an arc supporting plate, and two first supporting plates are arranged on the front side and the rear side of the left end of the forearm supporting plate respectively; the sides, away from each other, of the two first supporting plates are fixedly connected with one ends of two longitudinal adjusting shafts correspondingly, the front side and the rear side of the bottom of the arc supporting plate are provided with two second supporting plates correspondingly, the two second supporting plates are rotationally connected with the corresponding adjusting shafts correspondingly, and the top of the arc supporting plate is fixedly connected with the bottom of a large arm binding plate. A big arm binding assembly is arranged on the outer side of the big arm binding plate; according to the adjustable nursing supporting device after the pediatric operation, the relative positions of the ulna and the radius in the forearm can be limited in the initial stage of the operation, and the elbow protection mechanism can prevent the bending point of the elbow joint from being collided.

The utility model discloses a straightened distal radius fracture splint device, and belongs to the technical field of orthopedic fixing devices. The device comprises a first soft plate which is arranged on the hand back side of the distal radius in an attached mode, and the first soft plate integrally extends out of the wrist from the arm; the first clamping plate is arranged on the outer side of the first soft plate, the first clamping plate integrally extends from the arm to exceed the wrist, the part, exceeding the wrist, of the first clamping plate is bent downwards, and the tail end of the first clamping plate abuts against the hand back side so as to provide downward compression force for the hand back side; the second clamping plate is arranged on the radial side of the distal radius in an attached mode, the second clamping plate integrally extends out of the wrist from the arm, and the tail end of the second clamping plate abuts against the radial side of the hand, so that acting force towards the ulna side is generated; and the fixing piece is used for fastening and positioning the soft plate and the clamping plate. According to the straightened distal radius fracture splint fixing device, related complications such as soft tissue scars caused by gypsum wrapping and clamping of a fracture fixing part can be reduced.

The present application relates to the technical field of teaching apparatus, and provides a joint training model to solve the problem that current joint models cannot simulate real pathological feeling, resulting in poor palpation training effect of students. The present application comprises a simulated humerus, a simulated ulna and radius, and a simulated muscle connecting the simulated humerus and the simulated ulna and radius; one end of the simulated ulna and radius is provided with a joint socket, the joint socket comprises a mounting seat connected with the end of the simulated ulna and radius, a rough surface socket layer provided on one side of the mounting seat, a sliding rod provided on one side of the rough surface socket layer, a compression spring sleeved on the sliding rod, and a sliding surface socket layer provided on one end of the sliding rod; one end of the simulated humerus is provided with a humeral head, the surface of the humeral head is spherical, and the humeral head is covered with a joint capsule; through the adjustable joint socket structure and the inflatable joint capsule, the friction feeling of cartilage wear and the stiffness feeling of joint capsule contracture are simulated respectively, and the quantifiable and repeatable palpation training conditions are provided for students.

The application relates to the technical field of medical replacement prosthesis, in particular to an elbow joint prosthesis which comprises a humerus assembly, a ulna assembly and a hinged piece. The humerus assembly comprises a humerus stem and a first connecting part located at one end of the humerus stem, the first connecting part extends to form a spaced first branch and a second branch at the end away from the humerus stem; the ulna assembly comprises a ulna stem and a second connecting part located at one end of the ulna stem, a through hole is formed in the center of the second connecting part; and two hinged pieces, each of which comprises a main body part and a rotating part connected with one end face of the main body part, and a notch is formed in the circumferential side wall of each main body part. The two rotating parts are respectively inserted into the through hole, the two rotating parts are coaxially connected and adjacently arranged, the first branch is inserted and fixed into the notch of one of the hinged pieces, and the second branch is inserted and fixed into the notch of the other hinged piece. The application has the effect of prolonging the service life of the prosthesis.

The invention discloses a knee pad and elbow pad falling ball impact testing system and method based on a bionic joint target. The testing system comprises a falling ball impact testing machine, a data acquisition system and the bionic joint target. The PVDF sensor is arranged between the patella and the patella ligament of the medical knee joint teaching aid model or arranged on the surface of the olecranon of the ulna of the medical elbow joint teaching aid model, and during an impact test, a knee pad or an elbow pad is fixed on the bionic joint target 3. Compared with the prior art, the bionic human knee-elbow target is prepared by using the SEBS gel with the mass fraction of 17% and the mechanical property similar to that of human muscle tissue and the medical joint teaching aid model consistent with the human knee-elbow bone joint structure, and PVDF sensors are installed on bone joint surfaces such as patella and ulna olecranon surfaces. The problems that in the prior art, a knee pad and elbow pad impact test target is low in bionic degree, poor in mechanical stability and inaccurate in test data, and bone joint surface stress cannot be directly obtained are solved.