82 results about "Biomimetic design" patented technology

The invention relates to a bionics design bone-line porous bone product and a preparation method and a purpose thereof, and belongs to the field of biomedical materials. The bionics design bone-line porous bone product is of a body-centered three-dimensional lattice micropore space structure, the atom positions of a unit body of the micropore space structure are filled by geometries, each geometry is a sphere casing or a sphere body, and is crossed with the surrounding sphere casings or the sphere bodies, and a through circular hole is formed in each crossing part. The bionics design bone-line porous bone product has the advantages that by utilizing a three-dimensional printing quick forming manufacturing technique, the excessive cutting waste is avoided, the utilization rate of material is high, and the processing is rapid; the bone-line porous bone nails, bars and plates prepared by the bionics design bone-line porous bone product are used for the human body hard tissue defect repair, bone tissue engineering stents, and bearing part bone tissue wound repair and reconstruction, the good structure integrity and shape customizing capability are realized, various shapes can be processed according to the patient bone tissue defect repair requirements, and the personalized medical requirements of the patient are met.

The invention relates to the technical field of biological composite materials, and discloses a preparation method of a novel neural restoration tissue engineering scaffold. The preparation method comprises the following steps: modifying bacterial cellulose; preparing a living cell derived material; uniformly mixing the modified bacterial cellulose with the living cell derived material to obtain a mixture, injecting the mixture into a mold, and preparing the neural restoration tissue engineering scaffold by an ice crystals directional solidification method and a freeze vacuum drying method. The preparation method has the benefits that due to dual bionic design of a structure and a component, the living cell derived material, modified nano fibers and a conductive nano material are combined, so that the obtained scaffold is high in moisture content, good in comprehensive mechanical property and high in stability, and has bioactivity and electroactivity; meanwhile, growth and increment of blood cells can be promoted favorably, and a function of axonal regeneration can be guided; the preparation method is simple, and the shape and the size of a prepared product are easy to control; various requirements of the neural restoration tissue engineering scaffold can be met, and the application prospect is wide.

The invention discloses a large-scale programmable active transfer printing stamp and a transfer printing method based on the bionics design. A thermally driven bionic stamp is prepared by the steps of manufacturing a micro-cavity array on a high polymer stamp body, filling a thermally driven working medium, and then packaging with an adhesive thin film. Under the action of the external heating load, the thermally driven working medium controls the deformation of the adhesive thin film of the surface of the stamp so as to adjust the contact area of the stamp and ink, so that the adhesion between the stamp and the ink is adjusted, and strong adhesion pickup and weak adhesion printing of the ink are realized. The large-scale programmable active transfer printing stamp based on the bionics design provided by the invention is simple in structure, convenient to manufacture and low in cost; the thermally driven temperature is low, so that the heat damage on the stamp, the ink and a substratedue to high temperature can be effectively avoided; large-scale transfer printing can be realized by heating through adopting an overall heat source; or by adopting a laser beam for local heating, and by combining a displacement platform or a galvanometer and a field lens, the selective large-scale programmable active transfer printing is realized.

The invention provides a novel biomimetic mechanical arm structure. According to the mechanical arm, the drawbacks are overcome that the gravity center of a traditional series mechanical arm is in the front and a device is low in stiffness. A parallel drive mode is utilized to move the gravity center backwards, therefore in the premise that the working load is constant, the load of each joint is reduced, the load of a drive device is reduced, and the cost is saved. At the same time, the joints can only swing and do not introduce coupling translation like the majority of traditional parallel mechanisms. The mechanical arm adopts biomimetic design and comprises two connecting rods swinging in space. A linear drive part is utilized to achieve three degrees of freedom motion independently swinging on the shoulder and the wrist. A rotary drive unit is utilized to achieve one degree of freedom swing at the elbow. The motion mode of the mechanical arm is similar to that of the human arm, and the mechanical arm has an excellent biomimetic motion effect.

The invention relates to a design method of a bionic porous gradient artificial hip joint matrix. According to the design method of the bionic porous gradient artificial hip joint matrix, a low-density area, a medium-density area and a high-density area with ordered porous gradient properties are separately constructed on basis of three basic units, including a low-density area, a medium-density area and a high-density area; and then, the three units are combined so as to construct a matrix part of an artificial hip joint model. The design method of the bionic porous gradient artificial hip joint matrix utilizes a bone joint matrix with porous gradient properties as a bionic template; and bionic design is performed on arrangement ways and spatial layouts of the three basic units with different structures and density characteristics so as to obtain a bionic artificial hip joint matrix which is relatively close to a bone joint before replacement in terms of mechanical properties, so thatcomplications of aseptic loosening in previous artificial joint replacement operation can be effectively avoided so as to improve service life and reliability of the artificial joint.

The invention discloses a biomimetic costal cartilage prosthesis implant and a preparation method thereof, as that costal cartilage prosthesis implant is integrally in the shape of a strip, comprisesan intermediate elastic structure and a two-end fixing structure, wherein the elastic structure in the middle of the costal cartilage prosthesis is a mechanical wave structure, a reticular structure or a spiral structure, and the elastic coefficient of the costal cartilage prosthesis can be changed according to different implant positions by changing parameters of the intermediate elastic structure. The costal cartilage prosthesis implant has two end fixing structures, corresponding ribs and sternum, and has a structure for mounting fixing substitutes. The costal cartilage prosthesis implant has two end fixing structures. The costal cartilage prosthesis implant provided by the invention has mechanical properties close to the real costal cartilage, It can be used in combination with sternalrib prosthesis to improve the physiological function of sternal rib prosthesis after replacement in personalized chest wall bone reconstruction surgery, effectively reduce the postoperative respiratory function inhibition of clinical problems, and has a positive effect on postoperative recovery of patients.

The invention provides a method for designing a bionic structure of an vehicle roof cover reinforcing rib. Carrying out three-dimensional structure modeling on the upper roof cover of the vehicle andforming a finite element model; calculating and analyzing the snow collapse resistance, the compression resistance and the sinking resistance respectively; the flexibility is used as an optimization target; performing structural topological optimization on the roof model under a single working condition; a compromise planning method based on SIMP in a density method is adopted to carry out multi-objective topological optimization, modeling and performance analysis of a three-dimensional structure are carried out on formed new reinforcing ribs, and bionic design is carried out on a roof cover reinforcing rib structure in combination with a natural and ordered optimal structure achieved by dicotyledonous plant veins under the action of natural stress. According to the method, the non-convexoptimization problem is solved, the comprehensive influence of various working conditions on the roof cover structure is comprehensively considered, and the performance of the vehicle roof cover structure is perfected and improved by fully utilizing the existing structure in the nature.

The invention relates to a three-degree-of-freedom pneumatic flexible driver with variable rigidity and a preparation method thereof and aims to solve the technical problems that an pneumatic flexibledriver in the prior art cannot fit bionics design and achieve variable adjustment of rigidity, the bearing capacity of the driver itself is relatively poor and the response rate in the rigidity adjusting process is relatively low. The three-degree-of-freedom pneumatic flexible driver with variable rigidity comprises a driver body. A mounting groove arranged in a length direction of the driver body is formed in one end of the driver body, a variable rigidity module is embedded into the mounting groove and comprises a liquid metal, a protecting housing and a heating part, the liquid metal is encapsulated in the protecting housing, a plurality of air cavities are formed in the driver body, the air cavities are arranged in the length direction of the driver body, and the end, inserted onto the driver body, of an air pipe communicates to the air cavities while the other end of the air pipe extends to the outside of the driver body.

The invention relates to a digitizing design method of an individual function bionic crown shape. The digitizing design method comprises the steps that upper and lower jaw tooth columns in normal occlusion are scanned in batches as a standard template database; tooth position preparation bodies to be repaired, adjacent teeth and opposite jaw teeth are scanned to be recorded as data D1; the adjacent teeth and the opposite jaw teeth in the D1 are used as common areas to be correspondingly matched with data in the standard template database, and matched data D2 are selected; crown data in the D2which have the same tooth position with teeth to be repaired are fused with the tooth position preparation bodies to be repaired, and initial data of the repairing bodies are generated; intercuspal occlusion is conducted, and no intersection between the opposite jaw teeth is adjusted; a functional occlusal surface on a tooth crown of an opposite side same area of the two mesiocclusion and distocclusion adjacent teeth and a tooth arch is extracted, and a movement trail of the tooth position to be repaired is generated; and an enveloping surface of the movement of the opposite jaw tooth cusps istaken as a functional occlusal surface form of the teeth to be repaired. According to the digitizing design method, the process of designing of tooth bionic axial surfaces, the functional occlusal surfaces and physiological wearing surfaces by a senior dental expert can be imitated, and rapid bionic designing is achieved.

The invention discloses a preparation method of an ultra-thick heat-conducting graphene film. An ultra-thick graphene oxide film is prepared according to a bionic design principle, chitosan is added into graphene oxide slurry, and the chitosan can be dissolved in the acidic graphene oxide slurry. The method comprises the steps of using the graphene oxide slurry to prepare a thin film by means of suction filtration, blade coating and the like, controlling the morphology of the graphite oxide film, and introducing spikes on the surface of the graphite oxide film; and then stacking a plurality of layers of graphene oxide films, and forming a tightly combined thick film by the graphene oxide films under the combined action of a binder and mechanical embedding. The thickness of the obtained graphene film can reach 500 micrometers or above, the heat conductivity can reach 1146 W/mK, and the graphene film can be used for heat dissipation design of high-power electronic equipment.

The invention discloses a biomimetic design system for matching a biological prototype with a product style based on an inductive image. The system comprises an inductive image vocabulary pair database, a biological style image library, a biological picture scoring module and a matching module. According to the invention, an inductive matching method is introduced into the field of bionic design;the difficulty of matching the biological prototype with the product style in the initial stage of bionic design is solved; the limitation that the product cannot truly meet the product positioning style from the perspective of consumers due to the fact that the product is designed only by means of designers and product team ideas in the past is broken through, and the design system integrates consumer evaluation and accurate biological style at the initial stage of design. According to the method, the organisms are evaluated through the product style image evaluation scale, the biological style image library is established, new organisms can be continuously added into the image library, expansion is conducted according to the product perceptual dimension, reusability is achieved, and themethod serves bionic design in the future.

The invention discloses a bionic flexible paddy field inter-row weeding wheel and belongs to agricultural machinery. The bionic flexible paddy field inter-row weeding wheel is characterized in that a plurality of barrel type seats are fixedly installed on a radial plate, rod seats are hinged to the barrel type seats through plug pins, web plate return pin shafts and limiting pins are installed on the radial plate, the number of the web plate return pin shafts or the limiting pins is equal to that of the barrel type seats, web plate return torsion springs sleeve on the web plate return pin shafts, web plate left supporting rods, web plate middle supporting rods and web plate right supporting rods are installed on the rod seats through left supporting rod shafts, middle supporting rod shafts and right supporting rod shafts correspondingly, and left pin shafts and right pin shafts are fixedly installed on the rod seats; left and right torsion springs for adjusting the opening degree of web plates are correspondingly sleeve the left and right pin shafts, and elastic web plates are fixedly arranged on the web plate left supporting rods, the web plate middle supporting rods and the web plate right supporting rods. The bionic flexible paddy field inter-row weeding wheel is designed in a bionic mode according to the web claw structure of livestock and poultry animals, soil attached to the elastic web plates is reliably and effectively removed through elastic deformation of the elastic web plates and shaking generated by rapid reciprocating swing, and the wheel has the advantages of being scientific in principle, novel, unique and reasonable in structure, good in weeding effect, high in operation efficiency and low in power consumption.

The invention discloses a product bionic design fusion method and system based on form matching. In order to solve the problem of matching and fusion of a target domain and a source domain in productform bionic design, front, side, back and other pictures capable of expressing biological characteristics are subjected to contouring processing, and a biological contour data set is constructed; fora given target domain product contour, calculating shape distances between the target domain product contour and all biological contours in the biological contour data set by using a shape context matching method, and finding a source domain organism matched with the target domain product; feature points of the matched target domain product and source domain organism are marked in a one-to-one correspondence mode, bionic products with different bionic degrees are generated through the image deformation technology, and bionic fusion of a target domain and a source domain is achieved; and evaluating the bionic scheme by using three indexes of attractiveness, similarity and practicability. According to the method, a bionic matching-fusion-evaluation integrated system is realized, a rapid generation tool is created, and a reference is provided for a designer.

The invention discloses an indium oxide nanosphere coating brevibacterium flavum nitrile hydratase, a preparation method and application. The multilayered structure of cells is simulated by referring to the existence form of the hydratase in a living body, and the indium oxide nanosphere is prepared through bionic design of components, functions and processes and used for embedding of the brevibacterium flavum nitrile hydratase. The characteristics that the immobilized nitrile hydratase is high in stability, high in activity, easy to recycle and the like are used for catalyzing 3-cyanopyridine to be transformed into nicotinamide in an efficient hydrolysis mode. The preparation method of the bionic immobilized hydratase can provide reference significance for preparation of a microcyst immobilized carrier, and provide a novel research idea for biotransformation of the 3-cyanopyridine.

The invention discloses a bionic design method for a hammer sheet structure of a crusher, which comprises the following steps: selecting a mature and complete beaver incisor as a bionic prototype, obtaining point cloud data of the beaver incisor through industrial CT (computed tomography), constructing a three-dimensional solid model of the beaver incisor by using reverse engineering software, analyzing the scanned beaver incisor structure, carrying out finite element simulation on the tooth cutting movement process through finite element software, determining functional features on the incisor, extracting incisor feature parameters, designing corresponding response surface test schemes, simulating and analyzing all the designed test schemes through a finite element method, and then designing the optimal bionic hammer, wherein according to the designed crusher hammer sheet structure, sawtooth structures which are arranged at intervals are arranged on the two sides of an original structure; According to the method, the material crushing efficiency of the hammer sheet can be improved, and the service cycle of the hammer sheet is prolonged.

The invention relates to the technical field of aircrafts, in particular to a bionic aircraft and a control method. The bionic aircraft comprises conductive wires, an electric field sensor used for acquiring charge distribution and intensity of the atmosphere and/or the cloud layer; a winding and unwinding device used for winding and unwinding the conductive wires; an energizing device which is used for controlling the charge quantity of the conductive wires through the charge distribution and intensity of the atmosphere and/or the cloud layer; and a power supply which is used for supplying power to the electric field sensor, the winding and unwinding device and the energizing device. The charge distribution and intensity of the atmosphere and/or the cloud layer are obtained through the electric field sensor, and the charge quantity of the conductive wires is controlled by combining the energizing device, so that the conductive wire and the electric field between the atmosphere and/orthe cloud layer interact to drive the aircraft to fly; through the bionic design, a brand-new flight mode is realized, and the design is changed from nothing to nothing; and the bionic aircraft solvesthe problem that a traditional aircraft is large in flight noise.

The invention relates to the field of medical instruments, in particular to a bionic auxiliary system for postoperative recovery of stomach tumor patients. The bionic auxiliary system mainly comprises a deck chair adopting bionic design, and a chair back, arm supporting plates, armrests, a chair seat and leg supporting plates of the deck chair can be adjusted in a high-degree-of-freedom mode so as to meet the use requirements of a patient; a walking device is further arranged in cooperation with the deck chair, and the leg supporting plates with bionic joints are used in cooperation with the deck chair, so that the patient can walk while keeping a lying posture on a bionic recuperating chair, the requirement that the patient needs to move after a meal is met, and various common postoperative complications of the stomach tumor patient can be reduced at the same time; and in addition, a visual operation table used for relieving the mood of the patient and giving recovery and recuperation instructions is further arranged, the patient can be further helped to keep happy, correct recuperation guidance is given to the patient, the postoperative survival rate of the patient can be effectively increased, and the survival time of the patient can be effectively prolonged.

The invention discloses a bionic cushioning insole, and belongs to the technical field of engineering bionics. The bionic cushioning insole is characterized in that a half sole cushioning unit is arranged in a pit I of the insole, and the lower surface of a lower plate in the half sole cushioning unit is fixedly connected with the bottom surface of the pit I in the insole; a heel cushioning unit is arranged in a pit II of the insole, the bottom surface of a base plate VI of a lower frame in the heel cushioning unit is fixedly connected with the bottom surface of the pit II of the insole, and ashoe pad is fixedly connected to the upper surface of the base plate of the insole; and it is inspired that under the conditions of high speed and heavy load, lower limbs, especially feet, of the ostriches are not damaged, based on the ostrich lower limb cushioning mechanism, ostrich foot metatarsophalangeal joint structure characteristics and third toe pad material and structure assembly characteristics are applied to bionic design of the insole through an engineering bionics technology, the cushioning performance of a sole can be effectively improved, the foot of a human body is stabilized,the injury probability is reduced, and unification of sole cushioning and stable supporting is achieved.