CN111938881B - Intelligent intervertebral disc system capable of monitoring activity posture and stress thereof and monitoring method - Google Patents
Intelligent intervertebral disc system capable of monitoring activity posture and stress thereof and monitoring method Download PDFInfo
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- CN111938881B CN111938881B CN202010842742.4A CN202010842742A CN111938881B CN 111938881 B CN111938881 B CN 111938881B CN 202010842742 A CN202010842742 A CN 202010842742A CN 111938881 B CN111938881 B CN 111938881B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/1126—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb using a particular sensing technique
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/48—Other medical applications
- A61B5/4851—Prosthesis assessment or monitoring
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/74—Details of notification to user or communication with user or patient ; user input means
- A61B5/746—Alarms related to a physiological condition, e.g. details of setting alarm thresholds or avoiding false alarms
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
Technical Field
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.
Background
Cervical spondylosis is a general term of cervical osteoarthritis, proliferative cervical spondylitis, cervical radicular syndrome and cervical disc herniation, is a disease which is changed into a basic form by degenerative pathology, is accompanied by adjacent structural pathological changes to affect peripheral tissue structures (nerves, blood vessels and the like) and clinical manifestations corresponding to changes of imaging are presented, abnormal sensations such as pains on the occiput, the neck and the shoulder are mainly presented, and corresponding pressure pain points can be accompanied; nerve root symptoms such as numbness of arms, pain, etc. can also be manifested; the severe cases may have typical cervical and spinal cord injuries, mainly including dyskinesia, sensory and reflex abnormalities of limbs, and paralysis of limbs. With the increasing aging speed of the population in China and the change of the production and living modes (mobile phones, televisions, computers and the like) of the modern society, the incidence rate of cervical spondylosis is on the trend of rising year by year, and heavy social and economic burdens are brought. Cervical Disc Replacement (CDR) is an effective surgical method for treating degenerative diseases of cervical discs in recent years, which not only resects diseased discs, but also recovers the stability and activity function of the segment, and theoretically can avoid accelerated degeneration of adjacent segments caused by vertebral body fusion. Over the last 10 years, with the widespread use of artificial cervical disc replacement worldwide and the rapid development of spine non-fusion techniques, material science and biomechanics, many kinds of artificial cervical disc prostheses have emerged, such as Bryan, prestigeST, prodic-C, prestige LP, PCM, discover, etc. Cervical disc replacement surgery has progressed from initial single-segment disc replacement to double-segment disc replacement, hybrid disc replacement combining disc replacement with anterior cervical fusion surgery techniques. The cervical intervertebral disc replacement operation is proved and developed through long-term clinical practice, is considered to be an optional effective treatment scheme for treating cervical degenerative diseases at present, has the same or better clinical curative effect as the traditional ACDF operation, and has the advantages of retaining the activity of the cervical vertebra of a patient, having lower postoperative complications, having short work delay time and the like.
With the increasing aging speed of the population in China and the change of the learning work and entertainment modes of people caused by the popularization of electronic products, a large number of people bend over a table to learn and work for a long time, and the incidence rate of cervical spondylosis tends to rise year by year. The CDR operation can significantly improve the symptoms of cervical spondylosis, but if the poor posture and living habits, such as the long-time behavior of bending the cervical vertebra forward for a long time, e.g., long-time work on desk, low head for playing mobile phones, too high pillow during sleeping, or the post-operation excessive movement of the cervical vertebra, the cervical intervertebral discs of adjacent segments still can be degenerately changed, and the symptoms of cervical spondylosis reappear, even in the segments treated by the operation, the complications such as prosthesis loosening, displacement, sinking and the like can also occur under the adverse effect. Meanwhile, the patient does not have corresponding medical knowledge, and can not correctly distinguish whether the functional exercise performed after the operation is correct or not and whether the normal activity of the cervical vertebra is achieved or not; the doctor cannot know the postoperative rehabilitation condition of the patient in time, so that the doctor cannot guide the patient in a personalized way. If the problems can not be solved well, the recovery condition of the patient suffering from the cervical intervertebral disc replacement can be influenced, so that the postoperative life quality of the patient is not high, and heavy social and economic burdens are brought.
The existing cervical intervertebral disc prosthesis can not flexibly monitor the activity of cervical vertebrae in real time, can not early warn unhealthy postures of the cervical vertebrae, can not record data of postoperative rehabilitation training of a patient, can not collect, record and analyze the activity postures and corresponding stress data of the activity postures, and further provides effective data support for designing and optimizing the cervical intervertebral disc prosthesis.
Disclosure of Invention
The invention aims to provide an intelligent intervertebral disc system and a monitoring method capable of monitoring activity postures and stress thereof, which can flexibly monitor the current activity of cervical vertebra in real time, recognize the current activity posture of the cervical vertebra according to the current activity data of the cervical vertebra, obtain the stress sizes and changes corresponding to different cervical vertebra activity postures by combining stress data, early warn the unhealthy postures of the cervical vertebra, record the data in real time and further provide effective data support for designing and optimizing a cervical intervertebral disc prosthesis.
The invention adopts the following technical scheme to realize the aim, and the intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof is applied to the cervical intervertebral disc prosthesis, the intervertebral disc prosthesis comprises an upper plate 1, a support body 2 and a lower plate 3, the top of the support body 2 is connected with the upper plate 1, the bottom of the support body 2 is connected with the lower plate 3, the support body 2 is statically connected with 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.
Further, the gesture recognition module includes acceleration sensor, gravity sensor, spirit level, data transmission module and data processing module, stress sensor, acceleration sensor, gravity sensor and spirit level all are connected with data processing module, and data processing module is connected with data transmission module, data processing module is used for discerning the activity gesture of cervical vertebra according to the data of gravity sensor, acceleration sensor and spirit level to and combine stress sensor's stress data to draw the stress size that the activity gesture of cervical vertebra corresponds, and send the stress size that cervical vertebra activity gesture, activity gesture correspond to outside mobile terminal through data transmission module.
Further, the gesture recognition module further comprises a data storage module, and the data storage module is connected with the data processing module.
Further, in order to increase the sensing range, the upper plate 1 is provided with stress sensors uniformly distributed.
Further, in order to increase the sensing range, the lower plate 3 is provided with stress sensors distributed uniformly.
Further, the stress sensor is provided with a distinguishing mark for distinguishing the source of the stress data signal.
Further, the obtaining the stress magnitude corresponding to the moving posture includes: and establishing an X-Y rectangular coordinate system by taking the upper plate or the lower plate of the intervertebral disc prosthesis as a plane according to the distinguishing mark set by the stress sensor, and obtaining the stress magnitude corresponding to the moving posture by combining with the posture recognition module.
The monitoring method of the intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof is applied to the intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof, and comprises the following steps:
step 4, 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 5, 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.
Further, the monitoring method of the intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof further comprises the following steps: and 6, comparing the stress corresponding to the current cervical vertebra movement posture with the standard stress corresponding to the current cervical vertebra movement posture, and if the stress corresponding to the current cervical vertebra movement posture is larger than the standard stress corresponding to the front cervical vertebra movement posture, sending a prompt to give an early warning.
Further, the monitoring method of the intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof further comprises the following steps: and 7, recording and storing the activity posture of the cervical vertebra, the activity posture duration, the corresponding stress of the activity posture and the change data of the activity posture in real time.
The invention can monitor the intellectual intervertebral disc system of the activity gesture and its stress, apply to the intervertebral disc prosthesis of cervical vertebra, the said intervertebral disc prosthesis includes upper plate 1, support body 2 and lower plate 3, the top of support body 2 is connected with upper plate 1, the bottom of support body 2 is connected with lower plate 3, support body 2 and lower plate 3 are connected statically, the said support body 2 and upper plate 1 can move relatively, there are stress sensors in the support body 2, characterized by that, including the gesture recognition module, there are gesture recognition modules in the support body 2, the said gesture recognition module is used for discerning the activity gesture of the cervical vertebra, and combine the stress data of the stress sensor to obtain the stress magnitude that the activity gesture corresponds, carry on the early warning to the unhealthy gesture of cervical vertebra, and send the activity gesture, stress magnitude that the activity gesture corresponds to the external mobile terminal to carry on the real-time monitoring, can also carry on the real-time recording to the data through the external mobile terminal, further offer the effective data support for designing and optimizing the intervertebral disc prosthesis of cervical vertebra; the stress corresponding to the current cervical vertebra movement posture can be compared with the standard stress corresponding to the current cervical vertebra movement posture, if the stress corresponding to the current cervical vertebra movement posture is larger than the standard stress corresponding to the front cervical vertebra movement posture, the current posture is represented as a bad posture, damage to a body is easily caused, and a prompt is sent to give an early warning.
Drawings
Fig. 1 is a schematic structural diagram of a cervical intervertebral disc prosthesis applied to an intelligent intervertebral disc system capable of monitoring an activity posture and stress thereof according to the present invention.
FIG. 2 is a schematic block diagram of the circuit structure of the intelligent intervertebral disc system capable of monitoring the activity attitude and the stress thereof according to the invention.
FIG. 3 is a method flow diagram of the monitoring method of the intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof according to the invention.
In the drawing, 1 is an upper plate 1,2 and a support 2,3 and a lower plate 3.
Detailed Description
Fig. 1 is a schematic structural diagram of a cervical intervertebral disc prosthesis applied to the present invention, which includes an upper plate 1, a support body 2 and a lower plate 3, wherein the top of the support body 2 is connected with the upper plate 1, the bottom of the support body 2 is connected with the lower plate 3, the support body 2 is statically connected with the lower plate 3, and the support body 2 and the upper plate 1 can move relatively.
Fig. 2 is a schematic block diagram of a circuit structure of an intelligent intervertebral disc system capable of monitoring activity postures and stress thereof, wherein a stress sensor, a gravity sensor, an acceleration sensor and a level meter are all connected with a data processing module, the data processing module is connected with a data transmission module, and the data processing module is used for identifying a current cervical vertebra activity posture and the duration time of the current cervical vertebra activity posture according to the gravity sensor, the acceleration sensor and the level meter, obtaining the stress magnitude corresponding to the current cervical vertebra activity posture by combining the stress data of the stress sensor, and sending the cervical vertebra activity posture, the duration time of the cervical vertebra activity posture and the stress change data thereof to an external mobile terminal through the data transmission module.
Can monitor intelligent intervertebral disc system of activity gesture and stress thereof is applied to cervical intervertebral disc prosthesis, intervertebral disc prosthesis includes upper plate 1, supporter 2 and hypoplastron 3, and 2 tops of supporter are connected with upper plate 1, and 2 bottoms of supporter are connected with hypoplastron 3, and supporter 2 and the quiet hookup of hypoplastron 3, supporter 2 and upper plate 1 can move relatively, are provided with stress sensor in the supporter 2, are provided with gesture recognition module in the supporter 2, gesture recognition module is used for discerning the activity gesture of cervical vertebra to and combine stress sensor's stress data to obtain the stress size that the activity gesture corresponds, and send the stress size that activity gesture, activity gesture correspond to outside mobile terminal.
Wherein, gesture recognition module includes acceleration sensor, gravity sensor, spirit level, data transmission module and data processing module, stress sensor, acceleration sensor, gravity sensor and spirit level all are connected with data processing module, and data processing module is connected with data transmission module, data processing module is used for discerning the activity gesture of cervical vertebra according to the data of gravity sensor, acceleration sensor and spirit level to and combine stress sensor's stress data to draw the stress size that the cervical vertebra activity gesture corresponds, and send the stress size that cervical vertebra activity gesture, activity gesture correspond to outside mobile terminal through data transmission module.
The gesture recognition module further comprises 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 plate 1 may be provided with uniformly distributed stress sensors, the lower plate 3 may be provided with uniformly distributed stress sensors, or the upper plate 1 and the lower plate 3 may be provided with uniformly distributed stress sensors at the same time, the stress sensors are provided with distinguishing marks, and the distinguishing marks are used for distinguishing the sources of the stress data signals.
When the stress magnitude corresponding to the moving posture is calculated, an X-Y rectangular coordinate system is established by taking the upper plate or the lower plate of the intervertebral disc prosthesis as a plane, each stress sensor corresponds to a corresponding coordinate in the coordinate system, and the specific position, direction and magnitude of a stress data source can be known according to the set distinguishing mark.
When the intervertebral disc moves once, the stress concentration or the stress change can be measured in the specific direction of the specific distribution area, the movement direction of the cervical vertebra can be obtained according to the stress change, and the movement amount of the cervical vertebra can be obtained according to the stress change times and periods. The stress distribution of specific postures and activity conditions can be recorded; and then combining a gesture recognition module: the acceleration sensor can sense the implantation part in a moving state or a static state, can sense the moving direction in a space moving range, and can store data to the data storage module after being analyzed by the data processing module after sensing, wherein the time points of the movement in each direction are included; the gravity sensor and the level meter can measure the included angles of the horizontal plane, the coronal plane and the sagittal plane of the intervertebral disc prosthesis on a three-dimensional space coordinate system, so as to obtain the posture of the intervertebral disc prosthesis, the position of the intervertebral disc prosthesis and the position of the human body implantation part is fixed, a certain included angle exists, and the included angle is calculated again through data processing and can be converted into the space posture of the human body. Through the synergistic effect of the sensors, the postures (such as the forward bending degree and the backward bending degree) and the static or moving direction of the cervical vertebra at a certain moment can be obtained, and the stress conditions of specific target positions under different specific posture conditions can be obtained after the data correspond to the stress monitoring data.
Carry out real-time recording to duration, the cervical vertebra activity time of the different gestures of patient's postoperative cervical vertebra, can discern unhealthy gesture, if excessively low head and high pillow rest, carry out the early warning suggestion to unhealthy gesture, correct unhealthy gesture, make the patient keep a correct, the gesture that accords with cervical vertebra physiological condition, help bone joint healing.
The unhealthy posture is obtained by comparing the stress corresponding to the activity posture of the current implantation part with the standard stress corresponding to the activity posture of the current implantation part, and if the stress corresponding to the activity posture of the current implantation part is greater than the standard stress corresponding to the activity posture of the previous implantation part, the unhealthy posture is obtained.
And specific activity postures and duration time thereof can be recorded in real time, wherein the specific activity postures comprise 6 freedom degree of motion dimensions of anteflexion, retroflexion, left flexion, right flexion, left rotation and right rotation. The joint training can promote the recovery of muscle strength and neck movement of patients after operation, and improve the symptoms of stiffness, pain, numbness and the like which are common after operation. Before the orthopedic implant is implanted into a human body, postoperative joint rehabilitation training standard data can be stored in the recording memory module. When a patient does joint rehabilitation training, the orthopedic implant is connected with the corresponding APP through the Bluetooth, and the orthopedic implant system can record training action posture original data and the activities of the intervertebral disc prosthesis corresponding to 6 dimensions of anteflexion, retroflexion, left-right lateral flexion and left-right rotation respectively, and the activity amount, the activity range and the duration of 6 dimensions of human joints in anteflexion, retroflexion, left-right lateral flexion and left-right rotation. Then upload patient rehabilitation training's actual data to data processing module and standard data and contrast again, export data such as patient personal information, training action gesture primary data and actual data and contrast result in the mobile terminal APP through the bluetooth after obtaining the result again, the patient can in time know the recovered condition of oneself on the APP, also can carry out individualized rehabilitation training. Meanwhile, the rehabilitation doctor can also check corresponding data on the APP, and then timely assessment and guidance are carried out on the rehabilitation condition of the patient.
The chemical sensor can be arranged in the orthopedic implant to monitor the generation condition of wear debris in the orthopedic implant, the use condition of the orthopedic implant and the safety state (such as loosening, infection, bone absorption and the like) of the orthopedic implant.
The method for monitoring the intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof is shown in a flow chart of a method as figure 3 and comprises the following steps:
step 101: acquiring cervical vertebra activity data acquired by a gravity sensor, an acceleration sensor and a level meter in real time;
step 102: 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;
step 103: acquiring stress data of a stress sensor in real time;
step 104: obtaining the stress magnitude corresponding to the current cervical vertebra movement posture according to the current cervical vertebra movement posture and the stress data;
step 105: 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.
The monitoring method of the intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof further comprises the following steps: step 106: and comparing the stress corresponding to the current cervical vertebra movement posture with the standard stress corresponding to the current cervical vertebra movement posture, and if the stress corresponding to the current cervical vertebra movement posture is larger than the standard stress corresponding to the front cervical vertebra movement posture, sending a prompt to perform early warning.
Step 107: and recording and storing the activity posture of the cervical vertebra, the duration time of the activity posture, the corresponding stress of the activity posture and the change data of the activity posture in real time.
In step 101, the acceleration sensor may be used to sense a state of a cervical vertebra of a human body, such as movement or stillness, and may sense a movement direction of a head and a neck within a spatial movement range, where data includes time points of movement in each direction.
In conclusion, the invention can flexibly monitor the current activity of the cervical vertebra in real time, recognize the current activity posture of the cervical vertebra according to the current activity data of the cervical vertebra, obtain the stress magnitude and the change corresponding to different cervical vertebra activity postures by combining the stress data, early warn the unhealthy posture of the cervical vertebra, record the data in real time, and further provide effective data support for designing and optimizing the cervical intervertebral disc prosthesis.
Claims (4)
1. The intelligent intervertebral disc system capable of monitoring the activity posture and the stress thereof is applied to a cervical intervertebral disc prosthesis, the intervertebral disc prosthesis comprises an upper plate (1), a support body (2) and a lower plate (3), the top of the support body (2) is connected with the upper plate (1), the bottom of the support body (2) is connected with the lower plate (3), the support body (2) is statically connected with 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), the intelligent intervertebral disc system is characterized in that a posture recognition module is arranged in the support body (2), the posture recognition module comprises an acceleration sensor, a gravity sensor, a level, a data transmission module and a data processing module, the stress sensor, the acceleration sensor, the gravity sensor and the level are all connected with the data processing module, the data processing module is connected with the data transmission module, and is used for recognizing the activity posture of the cervical vertebra according to the data of the gravity sensor, the acceleration sensor and the level, and obtaining the stress corresponding to the activity posture of the cervical vertebra by combining the stress data transmission module and sending the stress corresponding to an external mobile terminal;
the step of obtaining the stress corresponding to the cervical vertebra movement posture specifically comprises the following steps: each stress sensor is provided with a distinguishing mark, an X-Y rectangular coordinate system is established by taking the upper plate or the lower plate of the intervertebral disc prosthesis as a plane according to the distinguishing mark arranged on the stress sensor, each stress sensor corresponds to a corresponding coordinate in the coordinate system, and the specific position, direction and size of a stress data source corresponding to the activity posture are obtained according to the arranged distinguishing mark.
2. The intelligent intervertebral disc system according to claim 1, wherein the gesture recognition module further comprises a data storage module connected to the data processing module.
3. Intelligent intervertebral disc system according to claim 1, characterised in that the upper plate (1) is provided with evenly distributed stress sensors.
4. Intelligent intervertebral disc system according to claim 1, characterised in that the lower plate (3) is provided with stress sensors distributed uniformly.
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| CN112446162B (en) * | 2020-11-23 | 2022-10-14 | 四川大学华西医院 | Intervertebral disc stress measuring device and method based on attitude recognition |
| CN113124744B (en) * | 2021-04-20 | 2022-10-28 | 电子科技大学 | Intelligent intervertebral trial mold, implant and control method |
| CN115414162A (en) * | 2022-11-04 | 2022-12-02 | 清华大学 | Orthopedic intervertebral fusion cage, strain monitoring system and method caused by vertebral body fusion |
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