CN112165146B

CN112165146B - Self-driven energy collection orthopedics endophyte device

Info

Publication number: CN112165146B
Application number: CN202011176441.9A
Authority: CN
Inventors: 杨毅; 申艺玮; 刘浩; 马立泰
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-05-04
Anticipated expiration: 2040-10-29
Also published as: CN112165146A

Abstract

The invention discloses a self-driven energy collection orthopedic implant device, which comprises a joint prosthesis in-vivo plant and a non-joint prosthesis in-vivo plant; the joint prosthesis endoprosthesis comprises an upper joint prosthesis, a lower joint prosthesis, at least one power generation module, a first electric energy management and storage module and a first power supply module; the non-articulating prosthetic endoprosthesis includes a fourth power generation module, a second electrical energy management storage module, a second power supply module, and a cage material. The invention designs a self-driven energy collection orthopedic implant device, which can directly supply power to intelligent orthopedic implants by self-driven power generation and energy collection, realizes the close connection of energy collection parts and application scenes, and becomes a self-driven energy collection orthopedic implant device independent of energy of other systems such as respiration and heartbeat collection.

Description

Self-driven energy collection orthopedics endophyte device

Technical Field

The invention belongs to the technical field of medical care, and particularly relates to a self-driven energy collection orthopedic implant device.

Background

Implantable medical electronics have experienced rapid development over the last few decades, which can effectively improve the quality of life and extend the life of patients. Currently, implantable medical electronic devices have been used as medical diagnostic tools in the diagnosis and treatment of various diseases, and these devices include pacemakers, implantable defibrillators, cochlear implants, deep brain, nerve and bone stimulators, etc. Most implanted medical electronics are currently powered by batteries. However, battery capacity limits the useful life of implantable medical devices. In addition, batteries also occupy a large portion of the weight and volume of the implanted electronics. Aiming at the service life problem of a battery, a non-invasive charging scheme is provided by a wireless charging technology, and the wireless charging technology for a human body is also called as a transcutaneous energy transmission system. However, the energy transfer efficiency of the existing wireless charging mode is low, the power is low, special charging equipment needs to be configured for charging at fixed time and fixed point, the size of the charging equipment is large, the requirement of portable charging cannot be met, and certain potential safety hazard exists due to the heating of electronic devices in the charging process. Therefore, how to effectively provide enough electric energy to the implanted medical device, maintain the implanted medical device to operate stably and reliably for a long time, and realize the expected function is one of the main problems facing researchers at present.

The orthopedic plant products mainly comprise spinal products, trauma products, artificial joint products, neurosurgery products (skull repairing titanium nets), orthopedic sports medicine products and the like. Common orthopedic implants include intervertebral fusion devices, orthopedic bone plates, nail and rod fixation systems, hip joint prostheses, knee joint prostheses, artificial vertebral bodies, intramedullary nails, elbow joint prostheses, wrist joint prostheses, shoulder joint prostheses, ankle joint prostheses, screws, titanium meshes, implanted artificial menisci, artificial ligament anchoring screws, and the like.

In the orthopedic field, many implantable medical electronics and intelligent orthopedic implants are currently being developed, which can perform well in the body, but these devices have a limited battery life and need to be replaced again when the battery is exhausted, which increases the harm to the patient and the economic burden. Although the percutaneous energy transmission system can wirelessly charge the implantable medical electronic device and the intelligent implantable medical implant in the human body, the energy transmission efficiency is low, the power is low, and the system still needs to be charged regularly, so that much inconvenience is brought to the life of a patient, the compliance of the patient can be reduced, and the treatment or monitoring effect is reduced. The heating problem during charging also makes this system have certain potential safety hazard. There is therefore a need for a self-powered power supply that can be used for long periods of time, is efficient, safe, stable, and does not require battery replacement and periodic charging. The existing energy collecting device mainly takes mechanical energy such as heartbeat, blood vessel pulsation, respiration, limb movement and the like as main energy sources. The special power supply device for the orthopedic implant is lacked. And the application scene position of the current energy collecting device needs to be near the functional position, and the remote power supply can not be realized, so the power supply system of the plants in the orthopedics department can not be realized by the energy collecting devices of other remote systems.

Therefore, at the present stage, a device capable of collecting mechanical energy generated by the plants in the orthopedics department in daily activities and converting the mechanical energy into electric energy to provide a stable and continuous power supply for the intelligent plants in the orthopedics department is needed.

Disclosure of Invention

The invention aims to solve the problem of providing a stable and continuous power supply for intelligent orthopedic implants, and provides a self-driven energy collection orthopedic implant device.

The technical scheme of the invention is as follows: a self-driven energy-collecting orthopedic implant device comprises an articular prosthesis implant and a non-articular prosthesis implant;

the joint prosthesis endoprosthesis comprises an upper joint prosthesis, a lower joint prosthesis, at least one power generation module, a first electric energy management and storage module and a first power supply module; the power generation module comprises a first power generation module, a second power generation module and/or a third power generation module;

the upper joint prosthesis is fixedly connected with the lower joint prosthesis; the first power generation module, the second power generation module, the third power generation module, the first power management storage module and the first power supply module are fixedly arranged in the upper joint prosthesis and/or the lower joint prosthesis; the first power generation module, the second power generation module and the third power generation module are in communication connection with the first power management storage module; the first electric energy management storage module is electrically connected with the first power supply module;

the non-joint prosthesis endoprosthesis comprises a fourth power generation module, a second power management and storage module, a second power supply module and a fusion device material;

a fusion device material is fixedly arranged on the fourth power generation module; the lower ends of the second electric energy management storage module and the second power supply module are fixedly provided with fusion cage materials; the fourth power generation module is in communication connection with the second electric energy management storage module; the second electric energy management storage module is electrically connected with the second power supply module.

The invention has the beneficial effects that:

(1) the invention designs a self-driven energy collection orthopedic implant device, which comprises an articular prosthesis in-vivo plant and a non-articular prosthesis in-vivo plant, can directly supply power to intelligent orthopedic implants by self-driven power generation and energy collection, realizes the close connection of an energy collection part and an application scene, and becomes a self-driven energy collection orthopedic implant device independent of the energy of other systems such as respiration and heartbeat collection.

(2) The device realizes self-power supply of intelligent orthopedic implant equipment, and avoids secondary operation injury and additional medical expenses caused by battery replacement.

(3) The device fully collects and utilizes the mechanical energy of the human musculoskeletal system, realizes effective collection of energy, and contributes to energy conservation.

Furthermore, the first power generation module, the second power generation module and the fourth power generation module have the same structure and respectively comprise a piezoelectric nano generator and/or a friction nano generator;

the first power generation module is used for converting pressure and friction mechanical energy received by a human body into electric energy;

the second power generation module and the fourth power generation module are used for driving the piezoelectric nano generator or the friction nano generator to generate power by using deformation generated when the human body is in different postures, and converting mechanical energy into electric energy.

The beneficial effects of the further scheme are as follows: in the invention, when the power generation modules of the joint prosthesis and the non-joint prosthesis are subjected to pressure or friction of joint surfaces in a patient body, the piezoelectric nano generator or the friction nano generator converts mechanical energy into electric energy, and the electric energy is stored in the electric energy management storage area and supplies power to power consumption equipment.

Further, the piezoelectric nano-generator comprises a first upper electrode layer, a piezoelectric material functional layer and a first lower electrode layer which are fixedly connected from top to bottom in sequence;

the piezoelectric material functional layer is used for generating electric charges caused by deformation; the first upper electrode layer and the first lower electrode layer are used for outputting charges.

Further, the friction nano-generator comprises a second upper electrode layer, a friction layer and a second lower electrode layer which are fixedly connected from top to bottom in sequence;

the friction layer is used for generating a triboelectric sequence caused by joint friction; the friction layer comprises a single-layer friction layer or a double-layer friction layer; the single-layer friction layer is made of an organic film, and the double-layer friction layer is made of a metal film and an organic film respectively; the second upper electrode layer and the second lower electrode layer are used for outputting electrical signals.

Further, the third power generation module comprises an oscillator, a mechanical rectifier, a spring and an electromagnetic micro-generator; the oscillator is in communication connection with the mechanical rectifier; the mechanical rectifier is fixedly connected with the spring; the spring is fixedly connected with the electromagnetic micro generator;

the third power generation module is used for converting mechanical energy generated by the amplitude of the human motion into electric energy; the oscillator is used for performing bidirectional swinging motion along with the reciprocating swinging of the joint; the mechanical rectifier is used for converting the bidirectional swing into the unidirectional swing and driving the spring to move; the spring is used for loosening when the rotation reaches a threshold value and driving the electromagnetic micro generator to generate electricity.

Furthermore, the first electric energy management storage module and the second electric energy management storage module have the same structure and respectively comprise a rectifier submodule, an electric energy temporary storage submodule and an electric energy storage submodule which are sequentially in communication connection.

Further, the rectifier sub-module is used for converting the alternating current output by the power generation module into direct current; the electric energy temporary storage submodule is used for temporarily storing the output direct current; the electric energy storage submodule is used for storing the temporarily stored direct current.

Further, the first power supply module and the second power supply module are used for consuming the stored electric energy of the electric energy storage submodule and supplying power to the implanted medical electronic device.

The beneficial effects of the further scheme are as follows: in the invention, the power supply module, namely the equipment consuming electric energy, is powered by the electric energy storage module to work.

Furthermore, joint prostheses are fixedly arranged below the second power generation module and on one side of the third power generation module.

The beneficial effects of the further scheme are as follows: in the invention, the joint prosthesis can avoid the power generation module from contacting with bone tissues and surrounding soft tissues and avoid chemical substances of internal electronic elements from leaking.

Further, both the joint prosthesis and the non-joint prosthesis comprise a sleeve-type structure, a ball-and-socket type structure, or a pin-type structure.

The beneficial effects of the further scheme are as follows: in the present invention, a sleeve type structure, a ball and socket type structure, or a pin type structure may realize the function of the second power generation module.

Drawings

FIG. 1 is a block diagram of a self-powered energy harvesting orthopedic implant device;

FIG. 2 is a block diagram of a power generation module in a plant in a joint prosthesis;

FIG. 3 is a block diagram of a power generation module in a plant in an unarticulated prosthesis;

FIG. 4 is a cross-sectional view of a self-powered energy harvesting orthopedic endoprosthesis device;

FIG. 5 is a block diagram of a piezoelectric nanogenerator;

FIG. 6 is a block diagram of a triboelectric nanogenerator;

FIG. 7 is a perspective view of an unarticulated prosthesis;

FIG. 8 is a cross-sectional view of a sleeve-type construction;

FIG. 9 is a cross-sectional view of a ball and socket type structure;

FIG. 10 is a cross-sectional view of a plug-type structure;

in the figure, 1, the upper joint prosthesis; 2. an inferior joint prosthesis; 3. a first power generation module; 4-1, a second power generation module; 4-2, a fourth power generation module; 5. a third power generation module; 6-1, a first electric energy management storage module; 6-2, a second electric energy management storage module; 7-1, a first power supply module; 7-2, a second power supply module; 8. a fuser material; 9. a rectifier sub-module; 10. an electric energy temporary storage submodule; 11. an electrical energy storage sub-module; 12. a first upper electrode layer; 13. a functional layer of piezoelectric material; 14. a first lower electrode layer; 15. a second upper electrode layer; 16. a friction layer; 17. and a second lower electrode layer.

Detailed Description

The embodiments of the present invention will be further described with reference to the accompanying drawings.

As shown in FIG. 1, the present invention provides a self-powered energy harvesting orthopedic implant device, comprising an articular prosthesis and a non-articular prosthesis;

the joint prosthesis endoprosthesis comprises an upper joint prosthesis 1, a lower joint prosthesis 2, at least one power generation module, a first power management and storage module 6-1 and a first power supply module 7-1; the power generation module comprises a first power generation module 3, a second power generation module 4-1 and/or a third power generation module 5;

the upper joint prosthesis 1 and the lower joint prosthesis 2 are fixedly connected; the first power generation module 3, the second power generation module 4-1, the third power generation module 5, the first power management storage module 6-1 and the first power supply module 7-1 are all fixedly arranged in the upper joint prosthesis 1 and/or the lower joint prosthesis 2; the first power generation module 3, the second power generation module 4-1 and the third power generation module 5 are in communication connection with the first power management storage module 6-1; the first electric energy management storage module 6-1 is electrically connected with the first power supply module 7-1;

as shown in FIG. 7, the non-articulating prosthetic endoprosthesis includes a fourth power generation module 4-2, a second power management storage module 6-2, a second power supply module 7-2, and a cage material 8;

a fusion device material 8 is fixedly arranged on the fourth power generation module 4-2; the lower ends of the second electric energy management storage module 6-2 and the second power supply module 7-2 are fixedly provided with a fusion device material 8; the fourth power generation module 4-2 is in communication connection with the second power management storage module 6-2; the second power management storage module 6-2 is electrically connected with the second power supply module 7-2.

In the embodiment of the invention, as shown in fig. 1, the first power generation module 3, the second power generation module 4-1 and the fourth power generation module 4-2 have the same structure and respectively comprise a piezoelectric nano-generator and/or a friction nano-generator;

the first power generation module 3 is used for converting pressure and friction mechanical energy received by a human body into electric energy;

the second power generation module 4-1 and the fourth power generation module 4-2 are used for driving the piezoelectric nano generator or the friction nano generator to generate power by using deformation generated when the human body is in different postures, and converting mechanical energy into electric energy.

In the invention, when the power generation modules of the joint prosthesis and the non-joint prosthesis are subjected to pressure or friction of joint surfaces in a patient body, the piezoelectric nano generator or the friction nano generator converts mechanical energy into electric energy, and the electric energy is stored in the electric energy management storage area and supplies power to power consumption equipment.

In the embodiment of the present invention, as shown in fig. 5, the piezoelectric nano-generator includes a first upper electrode layer 12, a piezoelectric material functional layer 13, and a first lower electrode layer 14, which are fixedly connected in sequence from top to bottom;

the piezoelectric material functional layer 13 is for generating electric charges caused by deformation; the first upper electrode layer 12 and the first lower electrode layer 14 are used to output electric charges.

In the embodiment of the present invention, as shown in fig. 6, the friction nano-generator includes a second upper electrode layer 15, a friction layer 16 and a second lower electrode layer 17, which are fixedly connected in sequence from top to bottom;

the friction layer 16 is used to generate a triboelectric sequence caused by friction of the joint; the friction layer 16 includes a single friction layer or a double friction layer; the single-layer friction layer is made of an organic film, and the double-layer friction layer is made of a metal film and an organic film respectively; the second upper electrode layer 15 and the second lower electrode layer 17 are used to output electrical signals.

In the embodiment of the invention, the structure of the friction nano generator is similar to that of the piezoelectric nano generator and is a structure of a functional layer between two end electrode layers; the following three cases are distinguished: the first electrode layer, the upper friction layer, the lower friction layer and the second lower electrode layer are sequentially arranged from top to bottom; secondly, the method comprises the following steps: the second upper electrode layer, the friction layer connected with the second upper electrode layer and the second lower electrode layer are sequentially arranged from top to bottom; thirdly, the method comprises the following steps: the second upper electrode layer, the friction layer connected with the second lower electrode layer and the second lower electrode layer are sequentially arranged from top to bottom.

In the embodiment of the present invention, as shown in fig. 1, the third power generation module 5 includes an oscillator, a mechanical rectifier, a spring, and an electromagnetic micro-generator; the oscillator is in communication connection with the mechanical rectifier; the mechanical rectifier is fixedly connected with the spring; the spring is fixedly connected with the electromagnetic micro generator;

the third power generation module 5 is used for converting mechanical energy generated by the amplitude of the human body movement into electric energy; the oscillator is used for performing bidirectional swinging motion along with the reciprocating swinging of the joint; the mechanical rectifier is used for converting the bidirectional swing into the unidirectional swing and driving the spring to move; the spring is used for loosening when the rotation reaches a threshold value and driving the electromagnetic micro generator to generate electricity.

In the embodiment of the invention, as shown in fig. 2, the first electric energy management storage module 6-1 and the second electric energy management storage module 6-2 have the same structure, and both include a rectifier sub-module 9, an electric energy temporary storage sub-module 10 and an electric energy storage sub-module 11 which are sequentially connected in a communication manner.

In the embodiment of the present invention, as shown in fig. 2, the rectifier sub-module 9 is configured to convert the ac power output by the power generation module into dc power; the electric energy temporary storage submodule 10 is used for temporarily storing the output direct current; the electric energy storage submodule 11 is used for storing the temporarily stored direct current.

In an embodiment of the present invention, as shown in fig. 1, the first power module 7-1 and the second power module 7-2 are configured to consume stored power of the power storage sub-module 11 and supply power to the implanted medical electronics.

In the invention, the power supply module, namely the equipment consuming electric energy, is powered by the electric energy storage module to work.

In the embodiment of the present invention, as shown in fig. 4, a joint prosthesis is fixedly provided under the second power generation module 4-1 and at one side of the third power generation module 5.

In the invention, the joint prosthesis can avoid the power generation module from contacting with bone tissues and surrounding soft tissues and avoid chemical substances of internal electronic elements from leaking.

In embodiments of the invention, both the articular and non-articular prostheses comprise a sleeve-type structure, a ball-and-socket type structure, or a pin-type structure. As shown in fig. 8, which is a sleeve-type configuration; as shown in fig. 9, which is a ball and socket type structure; as shown in fig. 10, it is a pin type structure. Wherein the shaded portion is the power generation module.

In the present invention, a sleeve type structure, a ball and socket type structure, or a pin type structure may realize the function of the second power generation module.

In the embodiment of the present invention, 3 power generation modules can be used respectively, or can be used in combination, and the combination that can be used in combination includes: a first power generation module 3; a second power generation module 4; a first power generation module 3+ a third power generation module 5; a second power generation module 4+ a third power generation module 5; the first power generation module 3+ the second power generation module 4+ the third power generation module 5. Since the present apparatus mainly generates electricity by pressure and friction, the third power generation module 5 is not used alone. On the basis, for the first power generation module 3 and the second power generation module 4, a piezoelectric nano generator or a friction nano generator can be used, or a nano generator based on a friction and piezoelectric composite mechanism can be used.

In the embodiment of the present invention, when the first power generation module 3 is used:

(1) when the piezoelectric nano friction generator is used independently, the piezoelectric nano friction generator is arranged on the lower joint surface, and the upper joint surface is used as a pressure source without special treatment.

(2) When the friction nano generator is used independently, the friction layers which are spaced up and down can be arranged on the surfaces of the upper joint and the lower joint respectively, and when the upper joint and the lower joint move relatively, the power can be generated by two principles of vertical contact separation and horizontal sliding; the entire triboelectric nanogenerator may be installed on the top of the lower joint surface, and an elastic material such as an elastic composite material, a polymer material, or a spring may be installed between the upper and lower friction layers, so that when pressure is applied from the upper joint surface, the triboelectric nanogenerator generates electricity by repeated contact and separation and relative movement.

(3) When the nano generator with the piezoelectric friction composite mechanism is used, the upper joint surface and the lower joint surface can be respectively arranged, or the upper joint surface and the lower joint surface can be independently arranged, similar to the friction nano generator. When the upper and lower articular surfaces are respectively arranged, the separation part (joint clearance) can adopt two methods of straight type and arch type. The common basic structure is five layers: the top electrode can be an aluminum electrode plate; a friction layer material; the middle electrode is a shared electrode and is shared by the friction unit above the middle electrode and the piezoelectric unit below the middle electrode; piezoelectric materials, such as polyvinylidene fluoride (PVDF) piezoelectric films; a bottom electrode. Wherein, the friction unit and the intermediate electrode can be contacted and separated, and generate electricity in the periodic motion. The top electrode and the middle electrode as well as the middle electrode and the bottom electrode are connected in pairs, and the current is directly output to the electric energy management storage module for rectification.

The piezo-friction machine generator may be straight or arched in shape. The arrangement is a straight shape. If the structure is arched, the arrangement sequence of the five-layer structure is as follows: the piezoelectric thin film layer is arranged on the bottom electrode. Wherein the friction layer is contacted and separated with the bottom electrode during the pressure action.

In the embodiment of the present invention, when the second power generation module 4 is used, the piezoelectric nanogenerator can be directly arranged in the module without special treatment. When the lower part of the joint prosthesis is pressed, the device can generate electricity by using the piezoelectric effect and the friction mode. In the power generation module of the non-joint prosthesis, it is arranged in the same manner as the second power generation module 4 of the joint prosthesis. When the non-articular prosthesis is compressed by pressure, the piezoelectric effect and friction can be used to generate electricity.

The working principle and the process of the invention are as follows: when the first power generation module 3 of the joint prosthesis is subjected to pressure or friction of the joint surface in the patient body, the piezoelectric nano generator or the friction nano generator in the joint prosthesis converts mechanical energy into electric energy, and the electric energy is stored by the electric energy management and storage module 6 and supplies power to the power supply device 7.

The second power generation module 4 at the lower part of the joint prosthesis is under different pressures when the human body is in different postures and loads, and can slightly deform when under the pressure, so that the internal piezoelectric nano generator or the friction nano generator can be driven to generate power, and mechanical energy is converted into electric energy.

The third power generation module 5 on the middle side part of the joint prosthesis moves along with the motion of the human body in the joint of the human body, has larger amplitude, and is used for converting the mechanical energy of the joint swing into electric energy by utilizing the electromagnetic induction principle through the oscillator, the mechanical rectifier, the spring and the electromagnetic micro generator.

The invention has the beneficial effects that:

It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.

Claims

1. A self-driven energy-collecting orthopedic implant device is characterized by comprising an articular prosthesis plant and a non-articular prosthesis plant;

the joint prosthesis endoprosthesis comprises an upper joint prosthesis (1), a lower joint prosthesis (2), at least one power generation module, a first power management and storage module (6-1) and a first power supply module (7-1); the power generation module comprises a first power generation module (3), a second power generation module (4-1) and a third power generation module (5);

the upper joint prosthesis (1) is fixedly connected with the lower joint prosthesis (2); the first power generation module (3), the second power generation module (4-1), the third power generation module (5), the first power management storage module (6-1) and the first power supply module (7-1) are all fixedly arranged in the upper joint prosthesis (1) and/or the lower joint prosthesis (2); the first power generation module (3), the second power generation module (4-1) and the third power generation module (5) are in communication connection with the first power management storage module (6-1); the first electric energy management storage module (6-1) is electrically connected with the first power supply module (7-1);

the non-articular prosthetic endoprosthesis comprises a fourth power generation module (4-2), a second power management storage module (6-2), a second power supply module (7-2) and a fusion device material (8);

a fusion device material (8) is fixedly arranged on the fourth power generation module (4-2); the lower ends of the second electric energy management storage module (6-2) and the second power supply module (7-2) are fixedly provided with a fusion device material (8); the fourth power generation module (4-2) is in communication connection with the second power management storage module (6-2); the second electric energy management storage module (6-2) is electrically connected with the second power supply module (7-2).

2. Self-powered energy harvesting orthopaedic implant device according to claim 1, wherein said first (3), second (4-1) and fourth (4-2) power generation modules are structurally identical, each comprising a piezoelectric and/or triboelectric nanogenerator;

the first power generation module (3) is used for converting pressure and/or friction mechanical energy received by the human body into electric energy;

the second power generation module (4-1) and the fourth power generation module (4-2) are used for driving the piezoelectric nano generator and/or the friction nano generator to generate power by using deformation generated when a human body is in different postures, and converting mechanical energy into electric energy.

3. Self-powered energy harvesting orthopaedic implant device according to claim 2, wherein said piezoelectric nanogenerator comprises, from top to bottom, a first upper electrode layer (12), a functional layer (13) of piezoelectric material and a first lower electrode layer (14) fixedly connected in sequence;

the piezoelectric material functional layer (13) is used for generating electric charges caused by deformation; the first upper electrode layer (12) and the first lower electrode layer (14) are used for outputting electric charges.

4. Self-powered energy harvesting orthopaedic implant device according to claim 2, wherein said triboelectric nanogenerator comprises a second upper electrode layer (15), a friction layer (16) and a second lower electrode layer (17) fixedly connected in sequence from top to bottom;

the friction layer (16) is used for generating a triboelectric sequence caused by joint friction; the friction layer (16) comprises a single friction layer or a double friction layer; the single-layer friction layer is made of an organic film, and the double-layer friction layer is made of a metal film and an organic film respectively; the second upper electrode layer (15) and the second lower electrode layer (17) are used for outputting electrical signals.

5. Self-powered energy harvesting orthopaedic implant device according to claim 1, wherein said third power generation module (5) comprises an oscillator, a mechanical rectifier, a spring and an electromagnetic micro-generator; the oscillator is in communication connection with a mechanical rectifier; the mechanical rectifier is fixedly connected with the spring; the spring is fixedly connected with the electromagnetic micro generator;

the third power generation module (5) is used for converting mechanical energy generated by the amplitude of the human body movement into electric energy; the oscillator is used for performing bidirectional swinging motion along with the reciprocating swinging of the joint; the mechanical rectifier is used for converting the bidirectional swing into the unidirectional swing and driving the spring to move; the spring is used for loosening when the rotation reaches a threshold value and driving the electromagnetic micro generator to generate electricity.

6. Self-powered energy harvesting orthopaedic implant device according to claim 1, wherein said first (6-1) and second (6-2) power management storage modules are structurally identical, each comprising a rectifier sub-module (9), a temporary storage sub-module (10) and a temporary storage sub-module (11) in communication in sequence.

7. Self-powered energy harvesting orthopaedic implant device according to claim 6, wherein said rectifier sub-module (9) is adapted to convert the alternating current output by the power generation module into direct current; the electric energy temporary storage submodule (10) is used for temporarily storing the output direct current; the electric energy storage submodule (11) is used for storing the temporarily stored direct current.

8. The self-powered energy harvesting orthopaedic implant device according to claim 7, wherein the first power supply module (7-1) and the second power supply module (7-2) are adapted to consume stored electrical energy of the electrical energy storage sub-module (11) and to supply power to the implanted medical electronics.

9. Self-powered energy harvesting orthopaedic implant device according to claim 1, wherein a joint prosthesis is fixedly arranged both below the second power generation module (4-1) and on one side of the third power generation module (5).

10. The self-powered energy harvesting orthopaedic endoprosthesis device of claim 1, wherein the articular prosthesis and the non-articular prosthesis each comprise a sleeve-type structure, a ball-and-socket-type structure, or a pin-type structure.