62results about How to "Bionic" patented technology

The invention relates to a preparation method of a three-dimensional artificial random porous structure tissue engineering scaffold, belonging to the technical field of biomaterials. The invention aims to solve the design and manufacturing problems of the bionic structure of tissue engineering scaffold, provides a design method for constructing a random distributed scaffold porous structure with a bionic shape under expected porosity and pore size requirements, and molds by using a 3D additive manufacturing method to produce tissue substitute. The preparation method provided by the invention has the following advantages that the scaffold has a 3D through-hole structure meeting bionic requirements, and ensures nutrient substance transfer and waste metabolism and has certain bionic mechanical properties; the porosity and pore size distribution range of the scaffold can be conveniently controlled, and the random pore structure with expected function gradient is constructed to realize the bionic characteristic of the structure; and the method is suitable for a large range of materials such as metal materials, non-metal materials and medical high molecular materials, and can meets user-personalized tissue repair requirements.

The invention discloses biological ink for 3D printing. The biological ink for 3D printing comprises water-soluble synthetic polymer with the cross-linking function, water-soluble natural polymer with the cross-linking function, bioactive components capable of spontaneously forming special ultrastructures, cross-linking initiator and solvents and further comprises bioactive components. The biological ink for 3D printing overcomes the defects that traditional 3d printing ink is single in component structure, does not have good biological activity and needs to utilize organic solvents, and it is difficult to take cell compatibility, biological activity and mechanical properties into consideration, the biological ink which has biological activity and the fast curing function at the same time and can form a certain microstructure is obtained, and hydrogel obtained through curing of the ink has controllable mechanical properties, good structural stability and a good fidelity effect.

The invention provides a bionic double-joint flapping wing air vehicle and belongs to the field of aerospace. The bionic double-joint flapping wing air vehicle comprises a fuselage, a flapping wing driving device, a main wing, an aileron, a main wing joint, an aileron joint, an empennage driving device and an empennage. The bionic double-joint flapping wing air vehicle is characterized in that the fuselage comprises a fuselage transverse beam and two fuselage frameworks, wherein the two same fuselage frameworks are arrayed in parallel and are fixedly connected with the fuselage transverse beam; the fuselage transverse beam penetrates through the centers of the fuselage frameworks. The flapping wing driving device is fixedly connected with the fuselage frameworks; the main wing is connected with the fuselage frameworks by the main wing joint; the main wing can rotate relatively around the fuselage frameworks by taking the main wing joint as a rotary axis. The aileron is connected with the main wing by the aileron joint; the aileron can rotate relatively around the main wing by taking the main wing joint and the aileron joint as rotary axes. The empennage driving device 5 is fixedly arranged at the rear end of the fuselage transverse beam and the empennage is connected with the empennage driving device. According to the double-joint bionic flapping wing air vehicle, left and right flapping wing devices are fully symmetrical and the flight stability is improved.

The invention relates to a bionic flexible machine body capable of lateral bending and up-down bending and belongs to the technical field of bionic robots. The bionic flexible machine body comprises a front machine body, a back machine body, a pneumatic artificial muscle component, a bionic spine and a sliding block moving mechanism. The pneumatic artificial muscle component is connected with the front machine and the back machine body through the sliding block moving mechanism respectively. The front end and the back end of the bionic spine are connected with the front machine body and the back machine body through screws respectively. The bionic flexible machine body can achieve lateral bending and up-down tilting bending moving and has the advantages of being good in pliability, flexibility, bionic effect and the like.

The invention relates to a flexible body of a bionic robot, and belongs to the technical field of bionic robots. The flexible body comprises a front body, a back body, an artificial spine, and pneumatic artificial muscles, wherein the artificial spine is formed by sequentially arranging a plurality of bionic spine units from small to large, the bionic spine units are completely same in structure and are different in size, and each bionic spine unit consists of a bionic spine, a bionic intervertebral disc soft cushion and a spring. The flexible body has the advantages that a leg mechanism is assisted to realize the flexible and in-place steering function of the bionic robot, the mobility of the robot adapting to the complicated environment is improved, the flexibility is high, the bionic effect is good, and the like.

The invention discloses a buffer and walking integrated landing device. Several buffer and walking integrated mechanisms are installed on the side wall of the landing device, and each buffer and walking integrated mechanism includes a body connecting plate assembly, a mechanical leg assembly, a buffering and driving integrated primary vibration reducer, buffering and driving integrated auxiliary vibration reducers, a knee joint locking device and a foot pad. Each body connecting plate assembly has the degree of freedom on medial rotation and lateral rotation; each mechanical leg assembly has the degree of freedom on the external swinging, retraction, anteflection and backward extension of hip joints, the stretching and bending of knee joints and the like; each buffering and driving integrated primary vibration reducer, each left buffering and driving integrated auxiliary vibration reducer, and each right buffering and driving integrated auxiliary vibration reducer achieve buffering or driving between the corresponding mechanical leg assembly and the corresponding body connecting plate assembly; the knee joint locking devices achieve flexible movement. The buffer and walking integrated landing device makes up for the shortcomings of a current movable landing device in the aspects of movement flexibility, use convenience and the like, and is extremely excellent in landing device body posture control capability and obstacle surmounting capability in the movement process.

The invention discloses a humanoid-neck parallel robot and a control method thereof. The humanoid-neck parallel robot comprises a moving platform, a fixed platform, soft ropes, a compression spring, a base, a switching power supply, step motor drivers, a single-chip microcomputer, a liquid crystal display module, an upper computer, step motors, columns, a tilt sensor, and pulleys; the step motors and the columns are fixed on the base; the tilt sensor is fixed on the moving platform; the pulleys are fixed on step motor shafts. The base is connected with the fixed platform through the columns. The fixed platform is connected with the moving platform through the compression spring. The step motors are connected with the moving platform through the soft ropes. The tilt sensor is connected with the single-chip microcomputer; the step motors are connected with the step motor drivers; the step motor drivers are connected with both the switching power supply and the single-chip microcomputer. The single-chip microcomputer is in communication connection with the upper computer. The humanoid-neck parallel robot can perform pitching motion, rolling motion and compound action of the pitching and rolling motions as simulation requires, the attitude of the robot, entered in software, can be achieved, and the humanoid-neck parallel robot is low in cost and convenient to operate.

The invention discloses an artificial muscle which is characterized in that a damping retracting unit and an elastic unit form a serial connection device, the sum of the length Lc of the damping retracting unit and the length Ls of the elastic unit equals to the length L of the artificial muscle, and the damping retracting unit and the elastic unit bears the same pull force which is pull force T borne by the artificial muscle. The artificial muscle is high in biont muscle performance bionic degree, short in motion response time, stable in performance, easy to adjust, high in energy utilization rate and long in service life, and a control mode and a work model are precise.

The invention belongs to the technical field of medical biological materials, and in particular relates to a polylactic acid / beta-calcium phosphate / I type collagen composite nerve conduit and a preparation method thereof. The polylactic acid / beta-calcium phosphate / I type collagen composite nerve conduit is prepared as follows: dissolving polylactic acid and I type collagen in an organic solvent, evenly mixing, using electrospinning technique to prepare a nerve conduit inner layer membrane; dissolving the polylactic acid and beta-calcium phosphate in the organic solvent, evenly mixing, spraying the nerve conduit inner layer membrane with a spinning liquid by the electrospinning technique to form a nerve conduit outer layer membrane, and preparing a polylactic acid / beta-calcium phosphate / I type collagen composite electrospinning film into a tubular conduit, putting the tubular conduit in a vacuum drying oven to fully evaporate the organic solvent to obtain the polylactic acid / beta-calcium phosphate / I type collagen composite nerve conduit. The three material of the polylactic acid, the beta-calcium phosphate and the I type collagen are compounded by the electrospinning technique for complement of advantages, the polylactic acid / beta-calcium phosphate / I type collagen composite nerve conduit has excellent mechanical properties, cellular affinity and hydrophilicity, can simulate the structure of an extracellular matrix, and is bionic.

The invention discloses a flexible bionic pneumatic wall-climbing robot and relates to the technical field of robots. The wall-climbing robot comprises a steering flexible mechanism, a straight bionicmechanism located at the tail part and an adsorption mechanism, wherein the steering flexible mechanism is located at the head part and the straight bionic mechanism is located at the tail part. Themovement of the wall-climbing robot moves can be divided into a linear advancing mode and a turning advancing mode. According to the flexible bionic pneumatic wall-climbing robot, flexible joints canbe controlled to achieve turning motions of the wall-climbing robot, so that the wall-climbing robot has good pliability and flexibility in the turning advancing mode; in addition, since cylinder-driven bionic joints are designed on the basis of the bionics principle, the linear advancing movement of the wall-climbing robot is similar to that of the movement principle of geometrid crawling, therefore the wall-climbing robot has strong bionic performance under the linear advancing mode, and accordingly the wall-climbing robot has stronger adaptability to the wall-climbing environment.

The invention discloses a lung tissue model for biotoxicity detection and a biotoxicity detection method. The lung tissue model comprises a trachea, a blood vessel and an alveolus pulmonis unit, wherein an air passage is defined in the trachea, and an air inlet and an air outlet, which are communicated with the air passage respectively are formed at two ends of the trachea; a blood passage is defined inside the blood vessel, and a liquid inlet and a liquid outlet which are communicated with the blood passage respectively are formed at the two ends of the blood vessel, a cavity is defined in the alveolus pulmonis unit, an elastic ventilate membrane is formed on the wall of the alveolus pulmonis unit, the alveolus pulmonis unit is arranged in the blood passage, and the cavity is communicated with the air passage. By adopting the lung tissue model, an air exchanging function and a breathing strain effect of the lung blood in the body can be simulated; through planting cells in the alveolus pulmonis unit, the structure and function of the alveolus pulmonis unit in a body and inflammation reaction of immune cells can be simulated in the subsequent culture process.

The invention relates to a bionic flexible body bending control system of a quadruped robot. The bionic flexible body bending control system comprises a bionic flexible body mechanism, a pneumatic circuit, a flexible body bending control circuit and a direct-current voltage source. According to the bionic flexible body bending control system, a bionic body is driven by pneumatic artificial muscles, has certain flexibility, and can be bent; the control system has the advantages of being easy to control, high in speed correspondingly and the like.

The invention discloses a lung tissue model for biotoxicity detection and a biotoxicity detection method. The lung tissue model comprises a trachea, a blood vessel and an alveolus pulmonis unit, wherein an air passage is defined in the trachea, and an air inlet and an air outlet, which are communicated with the air passage respectively are formed at two ends of the trachea; a blood passage is defined inside the blood vessel, and a liquid inlet and a liquid outlet which are communicated with the blood passage respectively are formed at the two ends of the blood vessel, a cavity is defined in the alveolus pulmonis unit, an elastic ventilate membrane is formed on the wall of the alveolus pulmonis unit, the alveolus pulmonis unit is arranged in the blood passage, and the cavity is communicated with the air passage. By adopting the lung tissue model, an air exchanging function and a breathing strain effect of the lung blood in the body can be simulated; through planting cells in the alveolus pulmonis unit, the structure and function of the alveolus pulmonis unit in a body and inflammation reaction of immune cells can be simulated in the subsequent culture process.

The invention discloses a dental implant with hydrophilic and antibacterial properties, which comprises a titanium base material and an antibacterial coating, belongs to the technical field of dental implant materials, and aims to solve the problem that the hydrophilicity and antibacterial property of the dental implant still need to be improved. The preparation method comprises the following steps: ultrasonically cleaning a titanium substrate with acetone, absolute ethyl alcohol and deionized water in sequence, drying, carrying out anodic oxidation treatment and calcining, and coating the surface of the titanium substrate with an antibacterial coating to obtain the dental implant with hydrophilic and antibacterial properties. The antibacterial coating disclosed by the invention comprises a polymer and Ag-ZnO nanoparticles, the polymer is a polymer formed by copolymerizing phosphorylcholine lipids, polyacrylic acid, methoxy polyvinyl ether and trimethoxysilyl propyl methacrylate, and the phosphorylcholine lipids belong to zwitterionic lipids, so that the coating is endowed with biocompatibility and has bionic performance; the Ag-ZnO nano particles are more easily accepted by organisms, and the Ag-ZnO nano particles have excellent antibacterial performance.

The invention discloses a reduced coenzyme and analogue regeneration catalyst as well as preparation method and application thereof. The reduced coenzyme regeneration catalyst comprises a metal sulfide. The catalyst has high activity and selectivity in the regeneration process of NADH, NADPH and analogues thereof.

The invention discloses a method for preparing an artificial joint prosthesis by using a 3D printing technology. The method includes the following steps: (1) a digital model of the artificial joint prosthesis is designed; and the artificial joint prosthesis comprises a porous layer, a compact layer and an embedding layer; (2) the digital model is introduced into a 3D printing device; and (3) according to the introduced digital model, a nano-hydroxyapatite / polyamide 66 powder material is fused layer by layer, and the artificial joint prosthesis is prepared by utilizing 3D printing. The artificial joint prosthesis with a special structure of the porous layer, the compact layer and the embedding layer "customized" by using the 3D printing technology is more accurate in matching with bones ofa patient, functional recovery of ill limbs is faster, and the operation time can be obviously shortened, complications of loosening and sinking of the prosthesis are reduced, and the service life ofan artificial joint is prolonged.

The invention discloses a pneumatic worm-like soft control arm and a preparation method thereof, and belongs to the field of fluid driving and soft robots. According to the pneumatic worm-like soft control arm, bidirectional symmetrical crossed and spirally wound fixing lines are designed by simulating a worm fiber membrane, the length of an elastic body arm can extend along with increase of the size when air pressure is applied to the elastic body arm, the radial expansion and torsion trend of the elastic body arm is limited, and a full-drive system with one cavity input only corresponding toone bending motion and completely free of coupling torsion is achieved, so that the abnormal expansion and torsion of the elastic body arm are reduced while the bending and extending actions of the elastic body arm in a three-dimensional space of the elastic body arm are realized, and the stability of the soft control arm is effectively improved; and an elastic body outer layer is arranged by simulating hydrostatic skeletons (octopus arms, trunk and chameleon tongue) widely existing in the nature, so that the bionic effect on a longitudinal muscle bundle, the fiber membrane and epidermis of aworm is realized from the structure, and the biological mechanism is better met.

The invention discloses a bionic antimicrobial abdominal wall repair material. The bionic antimicrobial abdominal wall repair material includes a pig small intestine submucosa and a chitosan-elastin fiber mesh layer laminating on one side of the pig small intestine submucosa; and the chitosan-elastin fiber mesh layer is an electrostatic spinning nanoscale chitosan- elastin fiber mesh. According tothe bionic antimicrobial abdominal wall repair material, the laminating combination of the chitosan-elastin fiber mesh layer and the pig small intestine submucosa, so that the antimicrobial ability of the prepared abdominal wall repair material is improved effectively; meanwhile, the mechanical strength and degradation performance of the abdominal wall repair material meet the requirement of abdominal wall repair, angiogenesis can further be facilitated, tissue regeneration is facilitated, the existing technical bottleneck of the abdominal wall repair material is solved conveniently, and thetreatment effect of abdominal wall coloboma repair is effectively improved.

The invention discloses a blinking device suitable for a robot and the pet robot. The blinking device suitable for the robot comprises a driving device mounting seat, eyelids, a rotating shaft and a driving device, wherein the eyelids comprise the upper left eyelid and the upper right eyelid, the two ends of the upper left eyelid and the upper right eyelid are rotatably mounted on the driving device mounting seat; the rotating shaft is arranged between the upper left eyelid and the upper right eyelid, and the two ends of the rotating shaft are fixedly connected with the upper left eyelid and the upper right eyelid correspondingly; and the driving device is magnetically connected with the rotating shaft in a separable mode for driving the rotating shaft to rotate. The pet robot comprises a head shell and the blinking device. The upper left eyelid and the upper right eyelid are connected together through the rotating shaft, and the rotating shaft rotates under the effect of the driving device, so that the rotating shaft drives the upper left eyelid and the upper right eyelid to blink simultaneously; and the pet robot with a blinking function is more vivid and more lively, and the entertainment and biomimetic performance of the pet robot are increased.

The invention belongs to the field of robots, and particularly relates to a flexible actuator driven by chemical energy release reaction. The flexible actuator driven by chemical energy release reaction comprises an actuator body, an actuating terminal and a base, the actuator body comprises an actuating framework and a flexible actuating film, and a hollow fluid channel is formed in the flexibleactuating film. The actuating framework is arranged in the hollow fluid channel in the length direction of the hollow fluid channel and divides the hollow fluid channel into a front part and a rear part, the actuating terminal is used for completing a command to be executed, the base is used for fixing the lower end of the actuator body, and an air source module and an excitation module are arranged in the base. According to the flexible actuator, chemical energy release reaction and variable stiffness structure design are creatively combined, movement of a flexible end effector driven by thechemical energy release reaction is achieved, and simulation of the end effector is achieved through variable stiffness manufacturing and overlapping design; and a variable stiffness structure is innovatively used to simulate the skeleton structure of the end effector, and a flexible membrane structure is used to coat the skeleton.

The invention discloses a bionic bone tissue engineering bracket as well as a preparation method and application thereof. The method comprises the following steps: firstly, performing carboxylation and dopamine surface modification on carbon nano tubes (CNTs) in turn; forming hydroxyapatite grains on the dopamine CNTs surfaces under the condition of simulated body fluid, thereby constructing biological mineralized CNTs; utilizing agarose to construct a main body bracket and utilizing an electrophoretic technique to move the mineralized CNTs in the bracket and form an array in parallel in sequence, thereby constructing the bionic bone tissue engineering bracket AG-o-CNTs. The bionic bone tissue engineering bracket AG-o-CNTs disclosed by the invention can effectively promote the growth of mesenchymal stem cells (bMSCs) and has wide application prospect at the aspect of bone tissue engineering bracket material or bone substitute material.

The invention relates to the field of mechanical arms, in particular to a mechanical finger adopting a paper folding structure for transmission. The mechanical finger comprises a plurality of knuckleswhich are sequentially hinged to one another, and a knuckle driving device for controlling the knuckles to bend and stretch. The knuckle driving device is of a paper folding type linkage structure which is composed of a paper folding structure provided with multiple folding marks joining in one point, a paper folding page is formed between every adjacent folding marks, every two adjacent paper folding pages are hinged through folding marks, and the multiple paper folding pages are sequentially hinged and linked. According to the technical scheme, the angle between two adjacent knuckles is changed by controlling the rotating of the two adjacent knuckles through a driving plate and a connecting plate hinged to the driving plate. The mechanical finger is simple in structure, and quick to torespond to holding actions.

The invention provides a large-scale marine lift-type anti-storm-wave cage aquiculture system which can automatically go up and down, and has relatively-high anti-storm-wave capability, a relatively-stable frame structure and a relatively-long service life, and is not liable to deform when being used in ocean current. The large-scale marine lift-type anti-storm-wave cage aquiculture system is characterized in that the system comprises vertical-type floating drums (1), a net hauling device (2), netting (3), a stay rope (4), a peripheral framework (5) and a buoyancy adjusting device (6). A plurality of vertical-type floating drums (1) are arranged, and are uniformly installed on the peripheral framework (5) through coaxial sleeve structures; the netting (3) covers the peripheral framework (5); the stay rope (4) is connected with the netting; the net hauling device (2) is connected with the top of the peripheral framework (5); and the buoyancy adjusting device (6) is installed on the peripheral framework (5).

The invention relates to the field of bionic robots, in particular to a primate bionic robot gripper driven by pneumatic muscles. The robot gripper comprises an upper arm, a gripper upper joint, a gripper lower joint, the pneumatic muscles, a steel wire rope, a torsion spring and a pneumatic muscle mounting base. The lower end of the upper arm is fixed to the pneumatic muscle mounting base, the upper end of the upper arm is connected with the gripper lower joint, and the gripper upper joint is connected with the gripper lower joint. The pneumatic muscle mounting base is connected with the steel wire rope through the pneumatic muscles; the steel wire rope bypasses a groove on the gripper upper joint, the tail end of the steel wire rope is fixed to a threaded hole in the groove, and the groove constrains the direction of the steel wire rope. The designed primate bionic robot gripper is more bionic; compared with a traditional gripper driven by a gear motor, the grip torque of the gripperis greatly improved, and the defect of large specific self-weight of the traditional gripper driven by the gear motor is overcome.

The invention discloses a multi-functional nebulizer for internal medicine, and belongs to the field of medical equipment. A medicine transporting pipe comprises an inner transporting pipe and an outer transporting pipe; an oxygen transporting pipe is connected to the bottom of the outer transporting pipe; micropores are formed in the inner transporting pipe; an electrothermal resistance wire is arranged in the outer transporting pipe; magnetically-controlled switch assemblies each of which comprises a switching blocking plate and a small blocking block are respectively arranged at one end which is connected with a breathing mask, of the medicine transporting pipe, and one end which is connected with the breathing mask, of an air outlet pipe; an electromagnet I and a permanent magnet I which are repellent are separately arranged on each switching blocking plate and the corresponding small blocking block; a nose plug body with two cylindrical plugs is arranged on the breathing mask; a contact switch assembly comprising a separating flake is arranged in a through cavity of each cylindrical plug; two covering flakes are arranged on a through hole region on the separating flake; two groups of contact switches are respectively and correspondingly arranged at the upper part and the lower part on one side of the separating flake; and an electromagnet II and a permanent magnet II whichare repellent are separately arranged at the close ends of the two covering flakes. Through adoption of the multi-functional nebulizer disclosed by the invention, cool property stimulation brought byliquid medicines can be avoided, the situation that nebulization liquid medicines are coagulated can be reduced, and the situation that expired gas enters the medicine transporting pipe can be avoided; and the multi-functional nebulizer disclosed by the invention is high in automation degree, and convenient and accurate to control.

The invention belongs to the technical field of the medical biological material, and particularly relates to a porous artificial nerve stent and a preparation method thereof. The lactic acid-glycolic acid copolymer / bacterial cellulose artificial nerve stent is prepared by using a freeze-drying method. The method comprises the following steps: firstly dissolving a certain amount of the bacterial cellulose crystal whisker and the lactic acid-glycolic acid copolymer in an organic solvent, and pouring in a tetrafluoroethylene mould, and freeze-drying to obtain the lactic acid-glycolic acid copolymer / bacterial cellulose artificial nerve stent. The prepared artificial nerve stent has the good biocompatibility, hydrophilic performance and higher porosity, and is capable of satisfying the requirement of the neural restoration. The bacterial cellulose is good for promoting the nerve cell adhesion and proliferation, and repairing the nerve injury. An autologous nerve graft method can be replaced by the artificial nerve stent, and the damaged nerves at two ends are bridged, so the nerve injury is repaired.

The invention belongs to the field of bio-robots, and discloses a hydraulic driving flexible robot joint which comprises a thigh structure, a thigh-crus connecting frame and a crus structure. The thigh structure comprises a thigh body frame, a cylinder seat, a hydraulic cylinder, a movable frame, a guide shaft and a compression spring. The crus structure comprises a crus body frame, a guide rail and a slide block. The crus body frame is hinged to the thigh body frame. The guide rail is installed on the crus body frame. The slide block is installed on the guide rail. One end of the thigh-crus connecting frame is hinged to the thigh body frame, and the other end of the thigh-crus connecting frame is hinged to the slide block. In addition, the thigh-crus connecting frame is hinged to the end, away from the hydraulic cylinder, of the guide shaft. The hydraulic driving flexible robot joint can adapt to changes of external loads, have the bionic flexible characteristic and force arm characteristics, meet motion requirements of a robot, and can effectively reduce the total weight, achieve lightweight and improve the motion efficiency.

The invention relates to a bionic flexible machine body capable of lateral bending and up-down bending and belongs to the technical field of bionic robots. The bionic flexible machine body comprises a front machine body, a back machine body, a pneumatic artificial muscle component, a bionic spine and a sliding block moving mechanism. The pneumatic artificial muscle component is connected with the front machine and the back machine body through the sliding block moving mechanism respectively. The front end and the back end of the bionic spine are connected with the front machine body and the back machine body through screws respectively. The bionic flexible machine body can achieve lateral bending and up-down tilting bending moving and has the advantages of being good in pliability, flexibility, bionic effect and the like.

The invention discloses an artificial muscle, which is characterized in that: a damping contraction unit and an elastic unit form a series device, the sum of the length Lc of the damping contraction unit and the length Ls of the elastic unit is the length L of the artificial muscle, and the damping contraction unit and the elastic unit are both Subject to equal tension, that is, the tension T of the artificial muscle. The present invention is an artificial muscle with high degree of bionicity to biological muscle performance, precise control mode and working model, short action response time, stable performance, easy adjustment, high energy utilization rate and fatigue life.

The invention belongs to the technical field of medical biological materials, and in particular relates to a polylactic acid / beta-calcium phosphate / I type collagen composite nerve conduit and a preparation method thereof. The polylactic acid / beta-calcium phosphate / I type collagen composite nerve conduit is prepared as follows: dissolving polylactic acid and I type collagen in an organic solvent, evenly mixing, using electrospinning technique to prepare a nerve conduit inner layer membrane; dissolving the polylactic acid and beta-calcium phosphate in the organic solvent, evenly mixing, spraying the nerve conduit inner layer membrane with a spinning liquid by the electrospinning technique to form a nerve conduit outer layer membrane, and preparing a polylactic acid / beta-calcium phosphate / I type collagen composite electrospinning film into a tubular conduit, putting the tubular conduit in a vacuum drying oven to fully evaporate the organic solvent to obtain the polylactic acid / beta-calcium phosphate / I type collagen composite nerve conduit. The three material of the polylactic acid, the beta-calcium phosphate and the I type collagen are compounded by the electrospinning technique for complement of advantages, the polylactic acid / beta-calcium phosphate / I type collagen composite nerve conduit has excellent mechanical properties, cellular affinity and hydrophilicity, can simulate the structure of an extracellular matrix, and is bionic.