CN111938881B - Intelligent intervertebral disc system and monitoring method capable of monitoring activity posture and stress - Google Patents

Abstract

The invention relates to the field of medical instruments, in particular to an intelligent intervertebral disc system capable of monitoring activity postures and stress thereof and a monitoring method, which can flexibly monitor the current activity of cervical vertebrae in real time, recognize the current activity posture of the cervical vertebrae according to the current activity data of the cervical vertebrae, and obtain the stress magnitude and the change thereof corresponding to different cervical vertebrae activity postures by combining stress data. The technical scheme includes that cervical vertebra activity data collected by a gravity sensor, an acceleration sensor and a level meter are obtained in real time; identifying the current cervical vertebra movement posture and the duration time of the current cervical vertebra movement posture according to the cervical vertebra movement data; acquiring stress data of a stress sensor in real time; obtaining the stress magnitude corresponding to the current cervical vertebra movement posture according to the current cervical vertebra movement posture and the stress data; and sending the cervical vertebra movement posture, the duration time of the cervical vertebra movement posture and the stress change data thereof to an external mobile terminal. Is suitable for monitoring the cervical intervertebral disc prosthesis.

Description

Intelligent intervertebral disc system and monitoring method capable of monitoring activity posture and stress

technical field

The invention relates to the field of medical equipment, in particular to an intelligent intervertebral disc system and a monitoring method capable of monitoring activity posture and stress thereof.

Background technique

Cervical spondylosis is a general term for cervical osteoarthritis, hypertrophic cervical spondylitis, cervical nerve root syndrome, and cervical disc herniation. It is a disease based on degenerative pathological changes, accompanied by adjacent structural pathological changes involving surrounding tissues. Structures (nerves, blood vessels, etc.) and clinical manifestations corresponding to imaging changes, mainly manifested as abnormal sensations such as occipital, neck, and shoulder pain, which may be accompanied by corresponding tender points; nerve root symptoms may also be manifested, For example, arm numbness, pain, etc.; in severe cases, typical symptoms of cervical spinal cord damage may appear, mainly limb movement disorders, sensory and reflex abnormalities, which may cause limb paralysis. With the acceleration of the aging population in my country and the changes in the production and lifestyle of modern society (mobile phones, TVs, computers, etc.), the incidence of cervical spondylosis is increasing year by year, which brings a heavy social and economic burden. Cervical disc replacement (cervical discreplacement CDR) is an effective surgical method for the treatment of cervical disc degenerative diseases in recent years. It not only removes the diseased intervertebral disc, but also restores the stability and activity function of the segment. Theoretically, it can Avoid accelerated degeneration of adjacent segments caused by vertebral body fusion. In the past 10 years, with the wide application of artificial cervical intervertebral disc replacement in the world and the rapid development of spinal non-fusion technology, material science and biomechanics, many kinds of artificial cervical intervertebral disc prosthesis appeared, such as Bryan, PrestigeST, ProDisc- C, Prestige LP, PCM and Discover etc. Cervical disc replacement surgery has developed from the initial single-level disc replacement to double-level disc replacement, hybrid disc replacement combined with disc replacement and anterior cervical fusion surgery. After long-term clinical practice testing and development, cervical disc replacement surgery has been considered as an alternative and effective treatment for cervical degenerative diseases. Cervical spine mobility, low postoperative complications, and short work delays.

With the acceleration of the aging population in our country and the changes in people's study, work and entertainment methods caused by the popularization of electronic products, a large number of people study and work at their desks for a long time, and the incidence of cervical spondylosis is increasing year by year. CDR surgery can significantly improve the symptoms of cervical spondylosis in patients, but if the bad posture and living habits are not changed, such as long-term desk work, bowing the head to play with mobile phones, sleeping with a pillow that is too high, etc. Excessive movement of the cervical spine after surgery will still cause degenerative changes in the cervical intervertebral disc of the adjacent segment, and the symptoms of cervical spondylosis will reappear. Even in the segment treated by surgery, prosthetic loosening, Complications such as displacement and subsidence. At the same time, the patient does not have the corresponding medical knowledge, and cannot correctly identify whether the functional exercise performed after the operation is correct and whether the normal range of motion of the cervical spine has been achieved; the doctor cannot keep abreast of the patient's postoperative recovery situation, so that he cannot personalize the patient. customized guidance. If these problems are not well resolved, it will affect the recovery of patients undergoing cervical disc replacement, resulting in poor postoperative quality of life for patients, which will bring heavy social and economic burdens.

The existing cervical intervertebral disc prosthesis cannot flexibly and real-time monitor the activity of the cervical spine, cannot give early warning to the unhealthy posture of the cervical spine, cannot record the data of the postoperative rehabilitation training of the patient, cannot collect, record and analyze the activity posture and its corresponding stress data, Further provide effective data support for the design and optimization of cervical intervertebral disc prosthesis.

Contents of the invention

The purpose of the present invention is to provide an intelligent intervertebral disc system and monitoring method that can monitor the activity posture and its stress, which can flexibly monitor the current activity of the cervical spine in real time, and identify the current activity posture of the cervical spine according to the current activity data of the cervical spine. Stress data can be used to obtain the stress magnitude and its changes corresponding to different cervical spine activity postures, early warning of unhealthy postures of the cervical spine, and real-time data recording, which further provides effective data support for the design and optimization of cervical intervertebral disc prosthesis.

The present invention adopts the following technical solutions to achieve the above object. The intelligent intervertebral disc system that can monitor the activity posture and its stress is applied to the cervical intervertebral disc prosthesis. The top is connected to the upper plate 1, the bottom of the support body 2 is connected to the lower plate 3, the support body 2 is statically connected to the lower plate 3, the support body 2 and the upper plate 1 can move relatively, and a stress sensor is arranged in the support body 2, and the It is characterized in that a posture recognition module is arranged in the support body 2, and the posture recognition module is used to recognize the active posture of the cervical spine, and combine the stress data of the stress sensor to obtain the stress corresponding to the active posture, and correspond to the active posture and the active posture. The stress size is sent to the external mobile terminal.

Further, the posture recognition module includes an acceleration sensor, a gravity sensor, a level, a data transmission module and a data processing module, and the stress sensor, the acceleration sensor, the gravity sensor and the level are all connected to the data processing module, and the data processing module is connected to the data processing module. The transmission module is connected, and the data processing module is used to identify the activity posture of the cervical spine according to the data of the gravity sensor, the acceleration sensor and the level meter, and combine the stress data of the stress sensor to obtain the corresponding stress size of the cervical spine activity posture, and pass the data transmission module Send the cervical spine activity posture and the stress corresponding to the activity posture to the external mobile terminal.

Further, the gesture recognition module further includes a data storage module, and the data storage module is connected to the data processing module.

Furthermore, in order to increase the sensing range, the upper plate 1 is provided with evenly distributed stress sensors.

Furthermore, in order to increase the sensing range, the lower plate 3 is provided with evenly distributed stress sensors.

Further, the stress sensor is provided with a distinguishing mark, and the distinguishing mark is used to distinguish the source of the stress data signal.

Further, the derivation of the stress corresponding to the active posture includes: establishing an X-Y rectangular coordinate system with the upper or lower plate of the intervertebral disc prosthesis as the plane according to the distinguishing marks set by the stress sensor, and then combining the posture recognition module to obtain the corresponding active posture. the magnitude of the stress.

The monitoring method of the intelligent intervertebral disc system capable of monitoring the activity posture and its stress is applied to the intelligent intervertebral disc system capable of monitoring the activity posture and its stress, including:

Step 1. Obtain the cervical spine activity data collected by the gravity sensor, acceleration sensor and level meter in real time;

Step 2. Identify the current active posture of the cervical spine and the duration of the current active posture of the cervical spine according to the cervical spine activity data;

Step 3, obtaining the stress data of the stress sensor in real time;

Step 4. Obtain the stress corresponding to the current cervical spine activity posture according to the current cervical spine activity posture and stress data;

Step 5. Send the cervical spine activity posture, the duration of the cervical spine activity posture and its stress change data to the external mobile terminal.

Further, the monitoring method of the intelligent intervertebral disc system that can monitor the activity posture and its stress also includes: step 6, comparing the stress magnitude corresponding to the current cervical spine activity posture with the standard stress magnitude corresponding to the current cervical spine activity posture, if the current cervical spine activity If the stress corresponding to the posture is greater than the standard stress corresponding to the active posture of the front cervical spine, a prompt will be issued for early warning.

Further, the monitoring method of the intelligent intervertebral disc system that can monitor the activity posture and its stress also includes: step 7, record and store the cervical spine activity posture, duration of the activity posture, stress corresponding to the activity posture and its change data in real time.

The intelligent intervertebral disc system capable of monitoring activity posture and stress of the present invention is applied to a cervical intervertebral disc prosthesis. The intervertebral disc prosthesis includes an upper plate 1, a support body 2, and a lower plate 3. The bottom of the body 2 is connected to the lower plate 3, the support body 2 is statically connected to the lower plate 3, the support body 2 and the upper plate 1 can move relatively, and a stress sensor is arranged in the support body 2, which is characterized in that it includes a posture recognition module, The support body 2 is provided with a posture recognition module, which is used to recognize the active posture of the cervical spine, and combine the stress data of the stress sensor to obtain the stress corresponding to the active posture, to give early warning to the unhealthy posture of the cervical spine, and to recognize the active posture , The stress corresponding to the activity posture is sent to the external mobile terminal for real-time monitoring, and the data can also be recorded in real time through the external mobile terminal, which further provides effective data support for the design and optimization of the cervical intervertebral disc prosthesis; the current cervical spine activity posture can also be The corresponding stress size is compared with the standard stress corresponding to the current cervical spine activity posture. If the stress corresponding to the current cervical spine activity posture is greater than the standard stress corresponding to the front cervical spine activity posture, it means that the current posture is a bad posture, which is easy to cause damage to the body. Prompt for early warning.

Description of drawings

Fig. 1 is a structural principle diagram of a cervical intervertebral disc prosthesis applied to the intelligent intervertebral disc system capable of monitoring activity posture and stress of the present invention.

Fig. 2 is a schematic block diagram of the circuit structure of the intelligent intervertebral disc system capable of monitoring activity posture and stress of the present invention.

Fig. 3 is a method flow chart of the monitoring method of the intelligent intervertebral disc system capable of monitoring activity posture and stress thereof according to the present invention.

In the accompanying drawings, 1 is an upper plate 1, 2 is a support body 2, and 3 is a lower plate 3.

Detailed ways

Accompanying drawing 1 is the structural principle diagram of the cervical intervertebral disc prosthesis applied in the present invention, comprising upper plate 1, support body 2 and lower plate 3, the top of support body 2 is connected with upper plate 1, and the bottom of support body 2 is connected with lower plate 3 , the support body 2 is statically coupled with the lower plate 3, and the support body 2 and the upper plate 1 can move relatively.

Accompanying drawing 2 is the schematic block diagram of the circuit structure of the intelligent intervertebral disc system of the present invention that can monitor activity posture and its stress, and stress sensor, gravity sensor, acceleration sensor and level instrument are all connected with data processing module, and data processing module is connected with data transmission module, so The above data processing module is used to identify the current cervical spine activity posture and the duration of the current cervical spine activity posture according to the gravity sensor, acceleration sensor and level meter, and obtain the stress corresponding to the current cervical spine activity posture by combining the stress data of the stress sensor, and through the data The transmission module sends the activity posture of the cervical spine, the duration of the activity posture of the cervical spine and the stress change data to the external mobile terminal.

The intelligent intervertebral disc system that can monitor the activity posture and its stress is applied to the cervical intervertebral disc prosthesis. The intervertebral disc prosthesis includes an upper plate 1, a support body 2 and a lower plate 3. The top of the support body 2 is connected to the upper plate 1, and the support body 2 The bottom is connected to the lower plate 3, the support body 2 is statically connected to the lower plate 3, the support body 2 and the upper plate 1 can move relatively, the support body 2 is provided with a stress sensor, and the support body 2 is provided with a posture recognition module. The gesture recognition module is used to identify the activity posture of the cervical spine, and combine the stress data of the stress sensor to obtain the stress corresponding to the activity posture, and send the activity posture and the stress corresponding to the activity posture to the external mobile terminal.

Wherein, the attitude recognition module includes an acceleration sensor, a gravity sensor, a level, a data transmission module and a data processing module, and the stress sensor, the acceleration sensor, the gravity sensor and the level are all connected to the data processing module, and the data processing module is connected to the data transmission module, The data processing module is used to identify the activity posture of the cervical spine according to the data of the gravity sensor, the acceleration sensor and the level meter, and obtain the stress corresponding to the activity posture of the cervical spine in combination with the stress data of the stress sensor, and transmit the activity posture of the cervical spine through the data transmission module. , and the stress corresponding to the activity posture is sent to the external mobile terminal.

The gesture recognition module also includes a data storage module, and the data storage module is connected with the data processing module.

In order to increase the sensing range, the upper board 1 can be provided with uniformly distributed stress sensors, the lower board 3 can be provided with uniformly distributed stress sensors, and the upper board 1 and the lower board 3 can also be provided with uniformly distributed stress sensors, and the stress sensors are provided with distinguishing marks. The distinguishing mark is used to distinguish the source of the stress data signal.

When calculating the stress corresponding to the active posture, an X-Y rectangular coordinate system is established with the upper or lower plate of the intervertebral disc prosthesis as the plane. In the coordinate system, each stress sensor corresponds to a corresponding coordinate. According to the set distinguishing marks, you can Know the exact location, direction and magnitude of the stress data source.

Every time the intervertebral disc moves, stress concentration or stress change can be measured in a specific direction in a specific distribution area. According to the stress change, the direction of cervical spine movement can be obtained, and the amount of cervical spine movement can be obtained according to the number and cycle of stress changes. It can also record the stress distribution of specific postures and activities; combined with the posture recognition module: the acceleration sensor can perceive whether the implanted part is in an active state or a static state, and can perceive the direction of activity within the range of spatial motion, and after perception, the data will be processed After the module analysis, the data can be stored in the data storage module, including the time points of movement in various directions; the gravity sensor and the level meter can measure the angle between the horizontal plane, coronal plane and sagittal plane of the intervertebral disc prosthesis in the three-dimensional space coordinate system, Thus, the posture of the intervertebral disc prosthesis is obtained. The position of the intervertebral disc prosthesis and the implanted part of the human body is fixed, and there is a certain angle. Through data processing and recalculation, it can be converted into the spatial posture of the human body. Through the synergistic effect of the above sensors, the posture of the cervical spine (such as how many degrees of forward bending and backward bending), static or moving direction can be obtained at a certain moment. After corresponding these data with the stress monitoring data, different specific parameters can be obtained. The stress situation for a specific target location in the attitude case.

The duration of different postures of the cervical spine and the activity time of the cervical spine of the patient are recorded in real time, and unhealthy postures can be identified, such as excessively lowering the head and resting on a high pillow. A correct posture in line with the physiological conditions of the cervical spine is conducive to bone and joint healing.

Among them, the unhealthy posture is to compare the stress corresponding to the active posture of the current implanted part with the standard stress corresponding to the active posture of the current implanted part. If the stress corresponding to the active posture of the current implanted part is greater than that corresponding to the active posture of the previous implant Standard stress is an unhealthy posture.

It can also record specific activity postures and their duration in real time, including 6 degrees of freedom activity dimensions of forward bending, backward extension, left bending, right bending, left rotation and right rotation. Joint training can promote the recovery of muscle strength and neck movement in patients after surgery, and improve common symptoms such as stiffness, pain, and numbness after surgery. Before the orthopedic implant is implanted into the human body, we can store the standard data of postoperative joint rehabilitation training in the recording memory module. When the patient is doing joint rehabilitation training, connect the orthopedic implant with the corresponding APP through Bluetooth, and the orthopedic implant system can record the original data of the training action posture and correspond to the 6 dimensions of forward flexion, backward extension, left and right lateral flexion, and left and right rotation. The activity of the intervertebral disc prosthesis, as well as the activity volume, range of activity and duration of human joints in the six dimensions of forward flexion, backward extension, left and right lateral flexion, and left and right rotation. Then upload the actual data of the patient's rehabilitation training to the data processing module for comparison with the standard data, and then output the patient's personal information, training action posture original data, actual data, and comparison results to the mobile terminal APP through Bluetooth , Patients can keep abreast of their rehabilitation status on the APP, and can also carry out personalized rehabilitation training. At the same time, the rehabilitation doctor can also view the corresponding data on the APP, and then evaluate and guide the patient's rehabilitation in a timely manner.

Chemical sensors can also be installed in orthopedic implants to monitor the occurrence of wear debris in orthopedic implants, the use of orthopedic implants, and the safety status of orthopedic implants (such as loosening, infection, bone resorption, etc.).

The monitoring method of the intelligent intervertebral disc system that can monitor the active posture and its stress, the method flow chart is shown in Figure 3, including:

Step 101: Obtain the cervical spine activity data collected by the gravity sensor, the acceleration sensor and the level in real time;

Step 102: Identify the current active posture of the cervical spine and the duration of the current active posture of the cervical spine according to the cervical spine activity data;

Step 103: Obtain the stress data of the stress sensor in real time;

Step 104: Obtain the stress corresponding to the current cervical spine activity posture according to the current cervical spine activity posture and stress data;

Step 105: Send the cervical spine activity posture, the duration of the cervical spine activity posture and its stress change data to the external mobile terminal.

The monitoring method of the intelligent intervertebral disc system that can monitor the active posture and its stress also includes: Step 106: comparing the stress corresponding to the current cervical active posture with the standard stress corresponding to the current cervical active posture, if the stress corresponding to the current cervical active posture is If it is greater than the standard stress corresponding to the active posture of the front cervical spine, a prompt will be issued for early warning.

Step 107: Real-time record and store the activity posture of the cervical spine, the duration of the activity posture, the stress corresponding to the activity posture and its change data.

In step 101, the acceleration sensor can be used to sense the state of the human cervical spine, such as activity or stillness, and can sense the movement direction of the head and neck within the range of spatial movement, and the data includes the time points of movement in each direction.

In summary, the present invention can flexibly monitor the current activity of the cervical spine in real time, and identify the current activity posture of the cervical spine according to the current activity data of the cervical spine, and then combine the stress data to obtain the stress magnitude and its change corresponding to different cervical spine activity postures. Early warning of unhealthy posture of the cervical spine and real-time data recording provide effective data support for the design and optimization of cervical intervertebral disc prosthesis.

Claims (4)

1. The intelligent intervertebral disc system that can monitor the activity posture and its stress is applied to the cervical intervertebral disc prosthesis. The intervertebral disc prosthesis includes an upper plate (1), a support body (2), a lower plate (3), and a support body (2) The top is connected to the upper plate (1), the bottom of the support body (2) is connected to the lower plate (3), the support body (2) is statically connected to the lower plate (3), and the support body (2) is connected to the upper plate (1) It can be relatively movable, and a stress sensor is arranged in the support body (2). It is characterized in that a posture recognition module is arranged in the support body (2), and the posture recognition module includes an acceleration sensor, a gravity sensor, a level, a data transmission module and a data transmission module. Processing module, the stress sensor, acceleration sensor, gravity sensor and level are all connected to the data processing module, the data processing module is connected to the data transmission module, and the data processing module is used to identify the The activity posture of the cervical spine, combined with the stress data of the stress sensor, is used to obtain the stress corresponding to the cervical spine activity posture, and the cervical spine activity posture and the stress corresponding to the activity posture are sent to the external mobile terminal through the data transmission module; The said deriving the stress corresponding to the cervical spine activity posture specifically includes: each stress sensor is provided with a distinguishing mark, and according to the distinguishing marks set by the stress sensor, an X-Y Cartesian coordinate system is established with the upper or lower plate of the intervertebral disc prosthesis as a plane. In the system, each stress sensor corresponds to the corresponding coordinates, and the specific position, direction and size of the stress data source corresponding to the active posture can be obtained according to the set distinguishing marks. 2 . The intelligent intervertebral disc system capable of monitoring active posture and stress thereof according to claim 1 , wherein the posture recognition module further includes a data storage module, and the data storage module is connected to the data processing module. 3. The intelligent intervertebral disc system capable of monitoring activity posture and stress thereof according to claim 1, characterized in that the upper plate (1) is provided with evenly distributed stress sensors. 4. The intelligent intervertebral disc system capable of monitoring activity posture and stress thereof according to claim 1, characterized in that the lower plate (3) is provided with evenly distributed stress sensors.

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