CN113520787A

CN113520787A - Interactive wearable device for perioperative period of total knee replacement

Info

Publication number: CN113520787A
Application number: CN202110668813.8A
Authority: CN
Inventors: 唐秀美; 易浩强; 杜思唯; 陈佳丽; 宁宁; 周思宇; 万旭峰; 武立民; 覃涵; 黄梓欣; 陆铮; 陈依崭; 雷蕾; 蒲兴翠; 周宗科
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2021-10-22

Abstract

The invention discloses interactive wearable equipment for a total knee joint replacement perioperative period, which comprises knee joint interactive wearable equipment and a total knee joint replacement remote management platform, wherein the knee joint interactive wearable equipment comprises a knee joint rehabilitation training mechanism and a control system; the knee joint rehabilitation training mechanism comprises a clamp and a motion bracket, wherein the clamp comprises a thigh clamp, a shank clamp and a knee clamp, and the clamps are in transmission connection through the motion bracket; the control system comprises a data acquisition unit, an intelligent analysis unit, a data transmission unit and a feedback unit. The invention provides comfortable and light breathable wearable equipment for man-machine interactive exercise; planning an individualized exercise scheme and continuously improving the scheme through big data deep learning; in addition, through a multi-lead sensing technology, the movement mode is monitored and early warned, so that the knee joint is prevented from being damaged secondarily, and the rehabilitation effect of the knee joint is enhanced; meanwhile, the monitoring and early warning of complications are carried out through the collection and analysis of physiological indexes, and lethal complications are avoided.

Description

Interactive wearable device for perioperative period of total knee replacement

Technical Field

The invention relates to the technical field of medical appliances, in particular to interactive wearable equipment for a total knee joint replacement perioperative period.

Background

Total knee replacement is an effective method for treating terminal knee osteoarthritis and is the last choice for poor conservative treatment. The functional recovery of knee joint of postoperative patient is influenced by many factors, not only related to the operation itself, but also depends on the training of knee joint in perioperative period (preoperative, postoperative). Therefore, perioperative (preoperative and postoperative) training plays an important role in the recovery of the knee joint function of the patient. However, problems currently exist including: (1) the joint replacement perioperative period has huge requirements on knee joint training, but the quantity of operators, rehabilitation doctors and rehabilitation nurses is insufficient, so that sufficient training resources are difficult to provide; (2) the traditional knee joint training needs to strictly observe individual conditions of patients, and effective guidance is very important for observing whether the patients feel discomfort such as dizziness, severe pain and the like. But the patient is discharged 2 days after the operation because the promotion of the rehabilitation surgery is accelerated, and the training can not be effectively supervised and monitored; (3) in addition, limited by regional distance, economic cost and the like, part of patients give up to a rehabilitation institution or a rehabilitation hospital for training, the training loss seriously affects the operation effect, and the remote management has great potential; (4) the defect of complication monitoring is that complications such as thrombus, infection and the like after knee joint replacement surgery can cause severe pain, joint replacement (revision) and even death of a patient if the complications are not found timely. The monitoring of the out-of-hospital complications is often self-reported by the patients, and is found to be in the late stage, which causes great economic loss and burden to the patients and the society.

At present, the rehabilitation therapy equipment for patients after total knee arthroplasty is a sitting type passive knee joint rehabilitation machine: the thigh clamp and the shank clamp are respectively fixed on the thigh and the shank, and the thigh clamp and the shank clamp are connected through a first movement branch and a second movement branch on two side edges of the leg in a transmission manner. Is used by contacting and fixing with limbs and comprises a binding band and a support frame. The leg support comprises a pair of synchronous belt transmission mechanisms which are parallel to each other and are obliquely arranged, wherein a fixed rod is fixedly connected between the synchronous belt transmission mechanisms driven by a double-shaft stepping motor, a leg support is fixedly arranged on the fixed rod, and two ends of the leg support are respectively and correspondingly connected with a thigh support and a pedal plate in a rotating mode. When the knee joint bending and stretching device is used, after the transmission belt is started, the fixed rod is driven to move up and down along the obliquely arranged transmission belt, the lower leg frame is driven to move up and down, and the bending and stretching movement of the knee joint is achieved.

The prior art has the following defects:

1. equipment design defect, interactive exercise function is short of:

the external exoskeleton device worn outside has the defects of low wearing adaptability and poor experience of patients, and the wearing effect is poor due to heavy device and complex structure. Most devices adopt rigid structures and rigid materials, so that the wearing experience of patients is poor;

the wearable device has the defect of single exercise content. Most devices involve only flexion and extension movements of the lower limbs, exercises involve only the quadriceps femoris, and peripheral muscle groups have relatively poor exercise performance, which is also a common disadvantage of most knee joint rehabilitation devices of the prior art. And the built-in exercise mode mainly adopts passive training, causes muscle strain and pain of patients, has terrorism phenomenon, and is not beneficial to long-term exercise.

The equipment has poor fitting performance and stability. Most of the fixed rods and the shank frames are in sliding connection, but the acting points of the legs of the human body change when the device is applied, and the device is not favorable for the stable control of bending and stretching movement;

in addition, the wearable device does not conduct human-computer interactive training guidance on the patient, the exercise effect and the safety of the patient cannot be guaranteed, and the patient cannot reach an ideal training target.

2. Complication monitoring and early warning functional deficiency

After study and updating, the prior art is found to lack the functions of complication monitoring and identification, early warning, intervention and the like.

3. Remote rehabilitation system lack of deep learning enabling

The existing remote rehabilitation system only collects and transmits the information of the active exercise of the patient through a sensor, and needs a rehabilitee to analyze and process. The system only has a monitoring and collecting function, but lacks the functions of autonomous analysis and deep learning, has the defects of high medical resource consumption and poor remote guidance effect.

Disclosure of Invention

The invention provides interactive wearing equipment for a total knee joint replacement perioperative period, which is a novel electromechanical integrated system, is worn outside the body of a patient and can provide controllable auxiliary force/moment for the patient, thereby realizing the functions of rehabilitation training, exercise assistance and the like for the patient. Not only inherits the advantages of the traditional rehabilitation training, but also solves the problems existing in the rehabilitation training method: (1) the training intensity individualized requirements of different patients are met, the ideal function and muscle strength recovery are achieved, the wearing comfort level and compliance are good, the knee joint can be prevented from being damaged secondarily, and the rehabilitation effect of the knee joint is well enhanced; (2) objectively recording and collecting information such as the activity degree, the movement speed, the muscle strength recovery state, the individual physiological data and the like of the affected limb of the patient in the transmission training process for platform analysis and treatment effect evaluation; (3) based on the information collected by the equipment, the training data can be analyzed, the training content can be optimized, a personalized rehabilitation training scheme can be formed, and the rehabilitation process can be monitored through a deep learning algorithm built in the platform. (4) In addition, the method can be used for deep learning of collected physiological data, predicting the risk of complications and carrying out early warning. Therefore, the development of the interactive wearable management device used after the knee fracture operation has great practical application value.

An interactive wearable device for a total knee joint replacement perioperative period comprises a knee joint interactive wearable device and a total knee joint replacement remote management platform, wherein the knee joint interactive wearable device comprises a knee joint rehabilitation training mechanism and a control system, and the total knee joint replacement remote management platform comprises a computer end and a moving end;

the knee joint rehabilitation training mechanism comprises a clamp and a motion bracket, wherein the clamp comprises a thigh clamp, a shank clamp and a knee clamp, the motion bracket comprises a first motion branch and a second motion branch, the first motion branch is positioned on the front side of a leg, the second motion branch is positioned on the back side of the leg, and the clamp is in transmission connection through the motion bracket;

the control system comprises a data acquisition unit, an intelligent analysis unit, a data transmission unit and a feedback unit.

Further, the first motion branch comprises a front stretching belt, a first rotating shaft, a second rotating shaft and a third rotating shaft, the first rotating shaft is fixedly connected with the thigh clamp through a connecting frame, the second rotating shaft is fixedly connected with the shank clamp through a connecting frame, and the third rotating shaft is fixedly connected with the knee clamp through a connecting frame; one end of the front stretching belt is fixed on the first rotating shaft, the other end of the front stretching belt is fixed on the second rotating shaft, and the middle part of the front stretching belt is abutted against the third rotating shaft.

Further, the second motion branch comprises a back stretching belt, a fourth rotating shaft, a fifth rotating shaft and a sixth rotating shaft, the fourth rotating shaft is fixedly connected with the thigh clamp through a connecting frame, the fifth rotating shaft is fixedly connected with the shank clamp through a connecting frame, and the sixth rotating shaft is fixedly connected with the knee clamp through a connecting frame; one end of the back surface stretching belt is fixed on the fourth rotating shaft, the other end of the back surface stretching belt is fixed on the fifth rotating shaft, and the middle part of the back surface stretching belt is abutted against the sixth rotating shaft.

Further, the length of the front stretching belt and the length of the back stretching belt are adjustable.

Further, the fixture comprises a support frame, an air cushion and a fixing piece, wherein the support frame is in a semicircular ring shape, the front support frame and the rear support frame are respectively enclosed into a circle, a lining is arranged on the inner wall, the fixing piece is arranged on the inner side of the lining, and the air cushion is sewn on the outer side of the fixing piece.

Preferably, the fixing piece is a binding band, and magic tapes are arranged at two ends of the binding band.

Furthermore, the connecting frames are located on two sides of the clamp and connected through bolts, and the connecting frames are in threaded connection with the rotating shaft.

Furthermore, servo motors are fixed on the thigh clamp and the shank clamp, and output shafts of the servo motors are in transmission connection with the rotating shaft through a pair of bevel gears.

Furthermore, the data acquisition unit comprises a wide-angle camera probe, a temperature sensor, a myoelectricity sensor, an acceleration sensor, a blood pressure sensor, a blood sugar sensor and a blood oxygen sensor, the wide-angle camera probe is arranged on the knee joint clamp support frame, the temperature sensor is arranged outside the bandage on the inner wall of the knee joint clamp, the electromyographic sensor comprises a plurality of annular electrodes which are arranged at the inner sides of air cushions on the inner walls of the thigh clamp, the shank clamp and the knee joint clamp, the acceleration sensors are arranged on the revolute pairs of the first, second, third, fourth, fifth and sixth rotating shafts, the blood pressure sensor is arranged on the thigh clamp support frame, the blood sugar sensor is arranged on the thigh clamp support frame, the blood oxygen sensor is arranged at the inner sides of the air cushions on the inner walls of the thigh clamp, the shank clamp and the knee joint clamp;

the intelligent analysis unit comprises knee joint electromyogram data analysis, knee joint activity data analysis (joint activity, muscle strength and walking distance), knee joint skin temperature data analysis, knee joint image data analysis and blood glucose and blood pressure data analysis;

the data transmission unit comprises a data storage module, a Bluetooth module and an embedded WIFI module;

the feedback unit comprises a bending and stretching early warning vibrator and a voice prompt module, the bending and stretching early warning vibrator is arranged on all the rotating shafts, and the voice prompt module is arranged on the thigh clamp support frame.

Furthermore, the total knee arthroplasty remote management platform can display data information such as basic information of the patient, vital signs of the patient, a prescription for medication of the patient, a prescription for exercise of the patient, and an exercise program of the patient.

The invention has the beneficial effects that:

1. the front stretching belt and the back stretching belt are designed by adopting the concept of bionic human leg muscle and man-machine fusion, and the knee joint is used as a part of the mechanism for analysis, so that the motion rules among human thighs, knee joints and calves are better fitted; the elastic stretching belt realizes linear active support and automatic compensation in the flexion and extension movement of the knee joint of the human body, abandons the burden of the self weight of the metal exoskeleton on the rehabilitation training process of a patient, avoids the secondary injury to the knee joint and can well enhance the rehabilitation effect of the knee joint;

2. the invention breaks through the region limitation and the time limitation of the traditional conventional knee joint rehabilitation training and the adverse effects of the psychological pressure, the physiological pressure, the economic pressure and the like of the patient, and leads the patient to independently finish the rehabilitation training by means of equipment in a proper rehabilitation period under the condition of home-living of the patient after the total knee joint replacement through the mutual association of the patient, the equipment and the doctor;

3. according to the invention, the whole process of the rehabilitation treatment of a patient is recorded in a way of data acquisition and data transmission while rehabilitation training, an individualized database is formed, and the individualized rehabilitation training scheme is formed by analyzing the database through an intelligent algorithm of equipment and remotely diagnosing doctors;

4. the invention can intelligently measure the data of knee joint activity, blood sugar and blood pressure, gait, muscle strength, skin temperature and the like, greatly reduces the requirements on manpower and other auxiliary medical equipment, and accurately reflects the knee joint rehabilitation condition of a patient in a certain rehabilitation training period;

5. according to the invention, the data collected by the sensor can be used for giving an early warning to critical situations in the exercise process in real time, so that a patient and a doctor are reminded to identify potential training hidden dangers; after patient data information is collected in the rehabilitation training process, the patient data information is compared with various parameters set by a doctor in real time, if the parameters exceed a preset value, prompts are sent to the patient and the doctor through a total knee joint replacement remote rehabilitation platform and a feedback unit voice prompt module, and the patient is prompted to go to a hospital for a doctor in time;

6. the invention can monitor and early warn postoperative severe complications according to data collected by the sensor, and an intelligent algorithm is built in the platform. And predicting the occurrence risk of the complications, and performing early warning after the risk reaches a risk threshold value.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the thigh clamp of the present invention;

FIG. 3 is a schematic view of the construction of the calf clamp of the present invention;

FIG. 4 is a schematic view of a knee brace according to the present invention;

FIG. 5 is a perspective view of the clamp of the present invention;

in the figure: 1-thigh clamp, 2-calf clamp, 3-knee clamp, 4-front stretching belt, 5-first rotating shaft, 6-second rotating shaft, 7-third rotating shaft, 8-back stretching belt, 9-fourth rotating shaft, 10-fifth rotating shaft, 11-sixth rotating shaft, 12-connecting frame, 13-supporting frame, 14-air cushion, 15-fixing piece, 16-lining, 17-servo motor, 18-bevel gear, 19-wide angle camera probe, 20-temperature sensor, 21-myoelectricity sensor, 22-acceleration sensor, 23-blood pressure sensor, 24-blood sugar sensor, 25-intelligent analysis unit, 26-data transmission unit, 27-bending and stretching early warning vibrator and 28-voice prompt module.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in the figure, the invention provides interactive wearable equipment for a total knee joint replacement perioperative period, which comprises knee joint interactive wearable equipment and a total knee joint replacement remote management platform, wherein the knee joint interactive wearable equipment comprises a knee joint rehabilitation training mechanism and a control system, and the total knee joint replacement remote management platform comprises a computer end and a moving end;

the knee joint rehabilitation training mechanism comprises a clamp and a motion bracket, wherein the clamp comprises a thigh clamp 1, a shank clamp 2 and a knee clamp 3, the motion bracket comprises a first motion branch and a second motion branch, the first motion branch is positioned on the front side of a leg, the second motion branch is positioned on the back side of the leg, and the clamp is in transmission connection through the motion bracket;

the control system comprises a data acquisition unit, an intelligent analysis unit 25, a data transmission unit 26 and a feedback unit.

Further, the first motion branch comprises a front stretching belt 4, a first rotating shaft 5, a second rotating shaft 6 and a third rotating shaft 7, the first rotating shaft 5 is fixedly connected with the thigh clamp 1 through a connecting frame 12, the second rotating shaft 6 is fixedly connected with the shank clamp 2 through a connecting frame 12, and the third rotating shaft 7 is fixedly connected with the knee clamp 3 through a connecting frame 12; one end of the front stretching belt 4 is fixed on the first rotating shaft 5, the other end of the front stretching belt is fixed on the second rotating shaft 6, and the middle part of the front stretching belt is abutted against the third rotating shaft 7.

Further, the second motion branch comprises a back stretching belt 8, a fourth rotating shaft 9, a fifth rotating shaft 10 and a sixth rotating shaft 11, the fourth rotating shaft 9 is fixedly connected with the thigh clamp 1 through a connecting frame 12, the fifth rotating shaft 10 is fixedly connected with the shank clamp 2 through a connecting frame 12, and the sixth rotating shaft 11 is fixedly connected with the knee clamp 3 through a connecting frame 12; one end of the back surface stretching belt 8 is fixed on the fourth rotating shaft 9, the other end of the back surface stretching belt is fixed on the fifth rotating shaft 10, and the middle part of the back surface stretching belt is abutted against the sixth rotating shaft 11.

Further, the front stretching strap 4 and the back stretching strap 8 are adjustable in length.

Further, the fixture comprises a support frame 13, an air cushion 14 and a fixing piece 15, wherein the support frame 13 is in a semicircular ring shape, the front and the back of the support frame are respectively enclosed into a circle, a lining 16 is arranged on the inner wall of the support frame, the fixing piece 15 is arranged on the inner side of the lining 16, and the air cushion 14 is sewn on the outer side of the fixing piece 15.

Further, the fixing member 15 is a binding band, and two ends of the binding band are provided with hook and loop fasteners.

Further, the connecting frame 12 is located on two sides of the fixture and connected through bolts, and the connecting frame 12 is in threaded connection with the rotating shaft.

Furthermore, servo motors 17 are fixed on the thigh clamp 1 and the shank clamp 2, and output shafts of the servo motors 17 are in transmission connection with the rotating shafts through a pair of bevel gears 18.

Further, the data acquisition unit comprises a wide-angle camera probe 19, a temperature sensor 20, a myoelectric sensor 21, an acceleration sensor 22, a blood pressure sensor 23, a blood sugar sensor 24 and a blood oxygen sensor, and the wide-angle camera probe 19 is arranged on the support frame 13 of the knee joint clamp 3; the temperature sensor 20 is arranged outside the inner wall fixing part 15 of the knee joint clamp 3; the electromyographic sensor 21 comprises a plurality of annular electrodes and is arranged on the inner sides of the air cushions 14 on the inner walls of the thigh clamp 1, the shank clamp 2 and the knee joint clamp 3; a plurality of acceleration sensors 22 are arranged on the revolute pairs of the first, second, third, fourth, fifth and sixth rotating shafts; the blood pressure sensor 23 is arranged on the support frame 13 of the thigh clamp 1 and corresponds to the femoral artery of the human body; the blood sugar sensor 24 is arranged on the support frame 13 of the thigh clamp 1, and the blood oxygen sensor is arranged at the inner sides of the air cushions 14 on the inner walls of the thigh clamp 1, the shank clamp 2 and the knee joint clamp 3.

Preferably, the blood pressure sensor 23 comprises a plurality of pressure-sensitive sensors arranged in parallel, and the inclination angles of the pressure-sensitive sensors are automatically fed back and regulated according to pressure data measured by the pressure sensors, so that the pressure-sensitive sensors are ensured to be parallel to the femoral artery and perform blood pressure measurement, and the accuracy of the measured blood pressure value is improved.

Preferably, the temperature sensor 20 is a skin-attachable CBT sensor, comprising a cylindrical chassis, a heat-resistant substrate with a polylactic acid (PLA) as a base, an aluminum structure which is a truncated cone with a hole, and two platinum resistance thermometers inserted in the hole at the side of the truncated cone, integrated with the heat-resistant substrate. The structure adopts a topological optimization design, has no complex curve after simplification, smooth surface and uniform thickness so as to improve the manufacturing tolerance, verifies the simplification of the structure through numerical calculation, effectively reduces the heat loss caused by environmental convection, and improves the precision of CBT estimation and the robustness to the convection. Experiments prove that the CBT sensor which is feasible for continuous CBT monitoring in the course of one day can be developed and applied to a double heat flow and zero heat flow method.

Preferably, the present embodiment combines the myoelectric sensor 21 and the heating sensor 22 to perform gait recognition in order to recognize the lower limb movement pattern. The sensors are fixed on corresponding muscles to collect surface electromyographic signals and acceleration signals, wherein the acceleration signals can reflect human body motion information with large scale and do not divide the human body motion information with small cycle, the surface electromyographic signals can reflect fine muscle activity information, the data collected by the sensors and the acceleration signals are subjected to feature fusion through the intelligent analysis unit 25, and the gait recognition efficiency is improved.

Preferably, the blood glucose sensor 24 can perform non-invasive blood glucose monitoring, and the non-invasive CGM will provide a reliable, convenient, cost-effective solution for blood glucose measurement. The non-invasive method is helpful for painless measurement of glucose (ISF) in interstitial fluid, and blood sugar can be measured through skin surface and sweat, so that the pain of a patient is greatly reduced, and the comfort is better.

Preferably, the blood oxygen sensor is formed by sequentially attaching a sensing film, an OLED, cellophane and an OPD, and the sensing film is in contact with the skin of a human body. Transdermal oxygen partial pressure is a local, non-invasive method of measuring and may be reflected in the amount of oxygen that diffuses from the capillaries through the epidermis via electrodes associated with the site of measurement. It can continuously reflect the oxygen supply capacity of organism to tissue in real time. tcpO2 depends on respiratory, blood transport oxygen, and circulatory system functions. Because the skin is positioned at the tail end of the oxygen supply system of the organism, any link of the organism for conveying oxygen is damaged and can be immediately reflected from the change of the oxygen partial pressure of the skin, and the acquired real-time data is transmitted to the intelligent analysis unit 25 to be comprehensively analyzed together with other related data to realize feedback regulation.

Preferably, the data acquisition unit further comprises a pressure sore monitoring module, and the pressure sore monitoring module is composed of disposable electrodes, an electrode array, a microcontroller and a microprocessor related to an image reconstruction algorithm and a machine learning algorithm. The pressure sore monitoring module can monitor the electrical characteristics of the target area without being in direct contact connection with the target area, and transmits the electrical characteristic data of the target area to the intelligent analysis unit 25 to perform comprehensive analysis together with other related data to realize the tightness degree of the feedback regulation device, so that pressure sore is prevented from occurring.

Further, in order to monitor the thermal electromotive force (seebeck voltage) generated by the person during the exercise and various human body motion conditions, the present embodiment combines the thermoelectric generator with the acceleration sensor 22 to monitor the motion conditions of the wearer. In the embodiment, the thermoelectric generator is an F-TEG, compared with a common rigid TEG, the F-TEG eliminates a ceramic substrate, and meanwhile, a special high polymer material is used for filling a blank space between a p-type supporting leg and an n-type supporting leg, namely polyurethane filling foam. The bond strength between the foam and the p-type and n-type legs and between the foam and the copper joint is sufficient to allow the F-TEG to be reliably used for the curved shape of the vehicle body.

Further, the intelligent analysis unit 25 includes knee joint myoelectric data analysis, knee joint movement data analysis (joint movement degree, muscle strength, walking distance), knee joint skin temperature data analysis, knee joint image data analysis, and blood sugar and blood pressure data analysis.

The data transmission unit 26 comprises a data storage module and a wireless connection module, wherein the data storage module is electrically connected with the wireless connection module, and the wireless connection module is wirelessly connected with the remote terminal; the data storage module is used for temporarily storing the patient rehabilitation training data acquired by the data acquisition unit, the pictures shot by the wide-angle camera 19 and the analysis results of the intelligent analysis unit 25; the wireless connection module comprises a Bluetooth module and an embedded WIFI module, the Bluetooth module is used for integrating a chip basic circuit set required by a Bluetooth function and realizing wireless data transmission under Bluetooth connection, the embedded WIFI module converts a serial port or TTL level into an embedded module which accords with a Wi-Fi wireless network communication standard, and a wireless network protocol IEEE802.11b.g.n protocol stack and a TCP/IP protocol stack are built in the embedded module and are used for directly utilizing WIFI to access the Internet.

The feedback unit comprises a plurality of bending and stretching early warning vibrators 27 and a voice prompt module 28, the bending and stretching early warning vibrators 27 are arranged on all rotating shafts, and the voice prompt module 28 is arranged on the supporting frame 13 of the thigh clamp 1.

The following are examples of the present invention: firstly, a patient wears the patient interactive wearable device used after the total knee replacement, the thigh clamp 1 is fixed on the thigh of the patient by using the fixing piece 15, the shank clamp 2 is fixed on the shank of the patient, and the knee clamp 3 is fixed on the knee cap of the patient, and special attention needs to be paid to keeping the axes of all rotating shafts parallel; then, the servo motor 17 is started, at the moment, the servo motor 17 is in a preparation state, the lengths of the front stretching belt 4 and the back stretching belt 8 are adjusted in a self-adaptive mode according to the size of the leg of the patient, and the surface stress of the front stretching belt 4 and the back stretching belt 8 is kept within the range of an initial preset value; then the servo motor 17 is adjusted to enter a working state, the servo motor 17 drives the first rotating shaft 5 and the fourth rotating shaft 9 on the thigh clamp 1 to rotate, and the servo motor 17 drives the second rotating shaft 6 and the fifth rotating shaft 10 on the shank clamp 2 to rotate. The servo motor 17 is coordinated by the control chip set.

In the process of rehabilitation training of a patient, when the legs of the patient are driven to extend, the servo motor 17 respectively drives the first rotating shaft 5 and the second rotating shaft 6 at the two ends of the front stretching belt 4 to rotate to appropriately tighten the front stretching belt 4, but still keeps the front stretching belt 4 in a tight state, and the third rotating shaft 7 is responsible for drawing the front stretching belt 4 to move; the servo motor 17 drives the fourth rotating shaft 9 and the fifth rotating shaft 10 at two ends of the back stretching belt 8 to rotate respectively to moderately release the back stretching belt 8, but still keep the back stretching belt 8 in a tight state, and the sixth rotating shaft 11 is responsible for drawing the back stretching belt 8 to move so that the leg of the patient obtains stretching supporting force.

In the process of rehabilitation training of a patient, when the legs of the patient are driven to bend, the servo motor 17 respectively drives the first rotating shaft 5 and the second rotating shaft 6 at the two ends of the front stretching belt 4 to rotate to appropriately release the front stretching belt 4, but still keep the front stretching belt 4 in a tight state, and the third rotating shaft 7 is responsible for drawing the front stretching belt 4 to move; the servo motor 17 drives the fourth rotating shaft 9 and the fifth rotating shaft 10 at two ends of the back stretching belt 8 to rotate and appropriately tighten the back stretching belt 8, but still keep the back stretching belt 8 in a tight state, and the sixth rotating shaft 11 is responsible for drawing the back stretching belt 8 to move, so that the leg of the patient obtains bending supporting force.

The process is repeated, so that the knee joint of the patient does regular flexion and extension movement under the driving of the knee joint rehabilitation training mechanism.

While the knee joint rehabilitation training mechanism works, other units of the invention also work, wherein:

a data acquisition unit:

the wide-angle camera probe 19 collects knee joint image data including wound surface image data and silt surface image data, and sends the data to the intelligent analysis unit 25.

And the temperature sensor 20 is used for acquiring knee joint skin temperature data in real time and sending the data to the intelligent analysis unit 25.

The electromyographic sensor 21 is used for collecting knee joint electromyographic data, and the electromyographic data comprises action potentials, electrode impedance values and skin dryness and humidity and is sent to the intelligent analysis unit 25.

The acceleration sensor 22 is configured to acquire knee joint activity data, where the activity data includes a step length, a step frequency, a step length, a leg falling strength, a leg swinging strength, an active flexion and extension degree, an active extension degree, a passive flexion and extension degree, a passive extension degree, and a joint activity compensation degree, and send the data to the intelligent analysis unit 25.

And the blood pressure sensor 23 is used for detecting the blood pressure precision in real time and sending the blood pressure precision to the intelligent analysis unit 25.

The blood glucose sensor 24 is used for non-invasively detecting the blood glucose level and sending it to the intelligent analysis unit 25.

The blood oxygen sensor is used for measuring the content of oxygen diffused from the capillary vessel through the epidermis, reflecting the oxygen supply capacity of the organism to the tissues and sending the oxygen content to the intelligent analysis unit 25.

And the pressure sore monitoring module is used for monitoring the electrical characteristics of the target area and sending the electrical characteristics to the intelligent analysis unit 25, and the tightness degree of the feedback unit adjusting device is analyzed to prevent pressure sores.

The smart analysis unit 25:

and analyzing knee joint electromyogram data, and performing electrophysiological analysis on action potential, resistance impedance value and skin dryness and humidity acquired by an electromyogram sensor in the data acquisition unit to obtain the muscle strength grade of the patient.

And analyzing knee joint activity data, namely performing change analysis on the step length, the step frequency, the step length, the leg falling strength, the leg swinging strength, the active flexion and extension degree, the active extension degree, the passive flexion and extension degree, the passive extension degree and the joint activity compensation degree which are acquired by the acceleration sensor in the data acquisition unit to obtain a continuous monitoring table of the continuous gait and the knee joint activity of the patient.

And analyzing the skin temperature data of the knee joint, analyzing the skin temperature change of continuous sampling of the knee joint according to the data acquired by the temperature sensor in the data acquisition unit, and drawing a continuous skin temperature monitoring table of the patient, wherein the skin temperature monitoring table is used for monitoring whether the patient has the risk of potential excessive activity and the risk of infection around the wound.

And (3) knee joint image data analysis, namely intercepting and analyzing the wound surface and silt surface image data acquired by the wide-angle camera probe in the data acquisition unit, and obtaining the rehabilitation condition of the knee joint of the patient after the total knee joint replacement operation, including the operation wound recovery condition and the subcutaneous bleeding condition.

And analyzing blood sugar and blood pressure data, and drawing a continuous blood sugar and blood pressure monitoring table of the patient for the blood sugar and blood pressure collected by a blood sugar sensor and a blood pressure sensor in the data collection unit.

And temporarily storing the data storage module of the data transmission unit 26 in the transmission of the sampling data and the analysis data, transmitting the data to a database of the total knee joint replacement remote rehabilitation platform for long-term storage under the conditions of Bluetooth connection and WIFI connection, and meanwhile, judging whether the knee joint reaches the preset activity degree or not by the platform through database comparison, and outputting the judgment result to the feedback unit.

A feedback unit:

when the platform judges that the knee joint activity degree is expected or the knee joint moves excessively, the result is output to the feedback unit, the flexion and extension early warning vibrator 27 vibrates for early warning, and the voice prompt module 28 gives a voice alarm to remind a patient and interrupt the rehabilitation process.

When the platform judges that the knee joint does not reach the preset mobility, the knee joint is output to the feedback unit, the rotating shaft is controlled to increase the buckling force, and the patient can reach the mobility.

The information that computer end and the removal end interface of total knee replacement art remote management platform show includes the data that patient basic information, patient vital sign, patient prescription of using medicine, patient's motion prescription, patient's motion procedure are including, wherein:

patient basic information including name, hospital number, diagnosis, attending physician, date of surgery and number of days discharged;

patient vital signs including height, weight, BMI, blood glucose, blood pressure, heart rate, and pain index;

a patient medication order comprising a continuous patient medication data record;

a patient movement prescription including a continuous patient movement data record;

a patient exercise program comprising a rehabilitation training task that the patient is designated to perform.

The doctor and the patient can view the displayed information through independent accounts, and other people except the corresponding doctor and the patient cannot view the information.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The utility model provides an interactive wearing equipment for total knee joint replacement perioperative period, includes a knee joint interactive wearing equipment and a total knee joint replacement art remote management platform, its characterized in that: the knee joint interactive wearable device comprises a knee joint training mechanism and a control system, and the total knee joint replacement remote management platform comprises a computer end and a moving end;

the knee joint training mechanism comprises a clamp and a moving support, the clamp comprises a thigh clamp (1), a shank clamp (2) and a knee clamp (3), the moving support comprises a first moving branch and a second moving branch, the first moving branch is positioned on the front side of a leg, the second moving branch is positioned on the back side of the leg, and the clamp is in transmission connection through the moving support;

2. The interactive wearable device for a total knee replacement perioperative procedure of claim 1, characterized by: the first motion branch comprises a front stretching belt (4), a first rotating shaft (5), a second rotating shaft (6) and a third rotating shaft (7), the first rotating shaft (5) is fixedly connected with the thigh clamp (1) through a connecting frame (12), the second rotating shaft (6) is fixedly connected with the shank clamp (2) through the connecting frame (12), and the third rotating shaft (7) is fixedly connected with the knee clamp (3) through the connecting frame (12); one end of the front stretching belt (4) is fixed on the first rotating shaft (5), the other end of the front stretching belt is fixed on the second rotating shaft (6), and the middle part of the front stretching belt is abutted against the third rotating shaft (7).

3. The interactive wearable device for a total knee replacement perioperative procedure of claim 1, characterized by: the second motion branch comprises a back stretching belt (8), a fourth rotating shaft (9), a fifth rotating shaft (10) and a sixth rotating shaft (11), the fourth rotating shaft (9) is fixedly connected with the thigh clamp (1) through a connecting frame (12), the fifth rotating shaft (10) is fixedly connected with the shank clamp (2) through the connecting frame (12), and the sixth rotating shaft (11) is fixedly connected with the knee clamp (3) through the connecting frame (12); one end of the back surface stretching belt (8) is fixed on the fourth rotating shaft (9), the other end of the back surface stretching belt is fixed on the fifth rotating shaft (10), and the middle part of the back surface stretching belt is abutted against the sixth rotating shaft (11).

4. Interactive wearable device for total knee replacement perioperative according to claims 2, 3, characterized in that: the lengths of the front stretching belt (4) and the back stretching belt (8) are adjustable.

5. The interactive wearable device for a total knee replacement perioperative procedure of claim 1, characterized by: the fixture comprises a support frame (13), an air cushion (14) and a fixing piece (15), wherein the support frame (13) is in a semicircular ring shape, the front and the back of the support frame (13) are respectively enclosed into a circle, a lining (16) is arranged on the inner wall of the support frame, the fixing piece (15) is arranged on the inner side of the lining (16), and the air cushion (14) is sewn on the outer side of the fixing piece (15).

6. The interactive wearable device for a total knee replacement perioperative procedure of claim 5, characterized by: the fixing piece (15) is a binding belt, and magic tapes are arranged at two ends of the binding belt.

7. Interactive wearable device for total knee replacement perioperative according to claims 2, 3, characterized in that: the connecting frames (12) are located on two sides of the clamp and connected through bolts, and the connecting frames (12) are in threaded connection with the rotating shaft.

8. The interactive wearable device for a total knee replacement perioperative procedure of claim 1, characterized by: a servo motor (17) is fixed on the thigh clamp (1) and the shank clamp (2), and an output shaft of the servo motor (17) is in transmission connection with the rotating shaft through a pair of bevel gears (18).

9. The interactive wearable device for a total knee replacement perioperative procedure of claim 1, characterized by: the data acquisition unit comprises a wide-angle camera probe (19), a temperature sensor (20), a myoelectric sensor (21), an acceleration sensor (22), a blood pressure sensor (23), a blood sugar sensor (24) and a blood oxygen sensor, the wide-angle camera probe (19) is arranged on a support frame (13) of the knee joint clamp (3), the temperature sensor (20) is arranged on the outer side of an inner wall fixing part (15) of the knee joint clamp (3), the myoelectric sensor (21) comprises a plurality of annular electrodes which are arranged on the inner side of inner wall air cushions (14) of the thigh clamp (1), the calf clamp (2) and the knee joint clamp (3), the acceleration sensor (22) is provided with a plurality of annular electrodes which are arranged on revolute pairs of a first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft, a fifth rotating shaft and a sixth rotating shaft, the blood pressure sensor (23) is arranged on the support frame (13) of the thigh clamp (1), the blood sugar sensor (24) is arranged on the support frame (13) of the thigh clamp (1), and the blood oxygen sensor is arranged on the inner sides of the inner wall air cushions (14) of the thigh clamp (1), the shank clamp (2) and the knee joint clamp (3);

the intelligent analysis unit (25) comprises knee joint myoelectric data analysis, knee joint activity data analysis, knee joint skin temperature data analysis, knee joint image data analysis and blood sugar and blood pressure data analysis before and after movement;

the data transmission unit (26) comprises a data storage module, a Bluetooth module and an embedded WIFI module;

the feedback unit comprises a plurality of bending and stretching early warning vibrators (27) and a voice prompt module (28), the bending and stretching early warning vibrators (27) are arranged on all rotating shafts, and the voice prompt module (28) is arranged on a support frame (13) of the thigh clamp (1).

10. The interactive wearable device for a total knee replacement perioperative procedure of claim 1, characterized by: the total knee arthroplasty remote management platform can display data information such as basic information of a patient, vital signs of the patient, a medication prescription of the patient, a movement program of the patient and the like.