CN115414104A - Posterior approach spine fixing rod and monitoring system for strain of fixing rod caused by spine stress - Google Patents
Posterior approach spine fixing rod and monitoring system for strain of fixing rod caused by spine stress Download PDFInfo
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- CN115414104A CN115414104A CN202211373486.4A CN202211373486A CN115414104A CN 115414104 A CN115414104 A CN 115414104A CN 202211373486 A CN202211373486 A CN 202211373486A CN 115414104 A CN115414104 A CN 115414104A
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- fixing rod
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
- A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
- A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00022—Sensing or detecting at the treatment site
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00199—Electrical control of surgical instruments with a console, e.g. a control panel with a display
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00017—Electrical control of surgical instruments
- A61B2017/00221—Electrical control of surgical instruments with wireless transmission of data, e.g. by infrared radiation or radiowaves
Abstract
The invention relates to the technical field of surgery, in particular to a posterior approach spinal fixation rod and a monitoring system for strain of the fixation rod caused by spinal stress, wherein the posterior approach spinal fixation rod comprises: the spine fixing rod comprises a spine fixing rod body, wherein a sensing array is made of a preset material at a preset position of the spine fixing rod body in a preset mode so as to sense strain on the sensing array and output a strain signal; the communication unit is used for receiving the strain signal and sending the strain signal to a preset terminal so as to obtain strain data of the fixing rod caused by spinal stress in the processes of spinal fracture healing and fusion based on the strain signal; and the packaging body is used for packaging the interbody fusion cage body and the communication unit. From this, solved among the correlation technique, equipment is bulky, the structure is complicated or there is circuit cable exposure risk, and then be unfavorable for operation, and influence technical problem such as formation of image monitoring field of vision.
Description
Technical Field
The invention relates to the technical field of surgery, in particular to a posterior approach spine fixing rod and a monitoring system for strain of the fixing rod caused by spine stress.
Background
The posterior approach spinal fixation nail-rod system is a main implant system for reconstructing the mechanical stability of the posterior column of the spinal in the spinal operation, and is widely applied to the treatment of spinal fracture and degenerative diseases. According to the requirements of surgical treatment, the percutaneous multi-axial pedicle screw can be divided into a single-axial pedicle screw and a multi-axial pedicle screw, the multi-axial pedicle screw is fixed percutaneously, and the fixation rod is matched to complete surgical reconstruction and the like. The typical application scene of the posterior approach spine fixation screw rod system is that if the reduction of vertebral fracture is realized through the stable fixation of the screw rod system, an internal spine fracture fixation system is formed to assist the healing of fracture, however, in the thoracolumbar fracture internal fixation operation using the screw rod system, the bone nonunion proportion is about 5% -35%, and the bone nonunion proportion is difficult to be found under the existing imaging follow-up method; other typical application scenarios include a posterior approach, a lateral posterior approach discectomy, and a vertebral body fusion fixation procedure.
Generally, methods for evaluating the healing of the spine fracture and the vertebral body fusion include X-ray fluoroscopy, CT (Computer Tomography) and MRI (Magnetic Resonance Imaging), which not only have a certain radioactivity, but also cause delayed healing to be difficult to find in time.
In the related art, a mechanical sensor can be implanted to realize auxiliary postoperative patient care by monitoring internal environment data, and quantitative data is helpful for evaluating the healing process of spinal fracture, so that treatment therapy can be customized in real time according to the requirements of patients, the stability and early activity of a fracture system are promoted, and in addition, radiation of radioactive substances can be kept to a minimum during postoperative follow-up, so that the potential risk of ionizing radiation is reduced, and the related technologies of the implantable sensor for a post-spinal approach nail rod system at present can include the following categories:
1. the system comprises three strain sensors and a radio frequency module, the implantable module has a large circuit volume, the strain sensors are fixed on a measured rod through film coatings, and the size of the implantable circuit module is large, cables are exposed, the cables are disordered, the packaging coatings are complex, and implantation difficulty and postoperative follow-up visual field limitation are caused.
2. A screw system, which is a double-segment internal spine fixer. The measuring box of the fixator comprises six load sensors, a unit for sensing energy and a telemetering unit for signal transmission, and the fixator can measure force components and moment components in three degrees of freedom after being implanted. The fixer has more complex structure and larger volume compared with the traditional fixing rod, and causes certain obstacle to the operation of an operator.
3. And the data acquisition equipment packaged by the metal shell is embedded on the posterior approach fixing rod, so that the monitoring of the fracture healing process is realized. The implanted data collector is internally provided with a strain sensor test circuit and an on-chip data processing chip, is packaged by a titanium metal shell, is connected to a rod in the vertebra fracture reduction and internal fixation, and is implanted into a body to realize the monitoring of the internal mechanical environment in the fracture healing process. The equipment is powered by a battery, and measures data in the radio frequency wireless transmission sensor to the client, so that the equipment is large in size, complex in structure and easy to cause view shielding in follow-up imaging monitoring.
In summary, in the related art, the device has a large volume, a complex structure or a risk of exposing a circuit cable, which is not beneficial to the operation, and affects the imaging monitoring field of vision, and needs to be improved.
Disclosure of Invention
The invention provides a posterior approach spine fixing rod and a monitoring system for spine stress induced fixing rod strain, and aims to solve the technical problems that equipment is large in size, complex in structure or exposed to circuit cables, operation is not facilitated, imaging monitoring vision is influenced and the like in the related art.
In a first aspect, the present invention provides a posterior approach spinal fixation rod, including: the spine fixing rod comprises a spine fixing rod body, wherein a sensing array is made of preset materials at a preset position of the spine fixing rod body in a preset mode so as to sense strain on the sensing array and output a strain signal; the communication unit is used for receiving the strain signal and sending the strain signal to a preset terminal so as to obtain the strain data of the fixing rod caused by the stress of the spine in the process of healing and fusing the spine fracture based on the strain signal; and the packaging body is used for packaging the spine fixing rod body and the communication unit.
Optionally, in an embodiment of the present invention, the material and/or the predetermined material of the spinal fixation rod body are carbon fiber reinforced polyetheretherketone, and the predetermined manner is irradiation carbonization.
Optionally, in an embodiment of the invention, the predetermined location is a location corresponding to a spinal fracture or spinal fusion.
Optionally, in one embodiment of the invention, the spinal fixation rod body comprises a uni-axial spinal fixation rod and/or a multi-axial spinal fixation rod.
Optionally, in an embodiment of the present invention, the communication unit includes a radio frequency tag formed on a surface of a predetermined material, so as to transmit a radio frequency signal formed by the strain signal to the predetermined terminal based on the radio frequency tag.
Optionally, in an embodiment of the present invention, the package is made by depositing a layer of parylene by chemical vapor deposition.
The embodiment of the second aspect of the invention provides a system for monitoring the strain of a fixing rod caused by the stress on a spine, which comprises: at least one posterior approach spinal fixation rod as described in the previous embodiments for collecting strain signals of the spinal fracture healing and fusion process; the communication device is used for receiving strain signals of one or more posterior approach spinal fixation rods; and the processor is used for obtaining the strain data of the fixing rod caused by the spinal stress of at least one patient according to the strain signals of the one or more posterior approach spinal fixing rods.
Optionally, in an embodiment of the present invention, the communication device includes: the receiver comprises at least one antenna, and is used for receiving the radio frequency signal of the posterior approach spine fixing rod when the distance between the receiver and the posterior approach spine fixing rod is within a preset distance, and analyzing the strain signal based on the radio frequency signal.
The embodiment of the third aspect of the invention provides a method for monitoring the strain of a fixing rod caused by the stress on a spine, which utilizes the system for monitoring the strain of the fixing rod caused by the stress on the spine, and comprises the following steps: collecting strain signals of the spinal fracture healing and fusion process based on the posterior approach spinal fixation rod; and obtaining strain data of the fixing rod caused by the spinal stress of at least one patient according to the strain signals of the spinal fracture healing and fusion processes.
In a fourth aspect, embodiments of the present invention provide a computer readable storage medium storing a computer program which, when executed by a processor, implements a method of monitoring strain in a fixation rod caused by a force applied to the spine as described above.
The embodiment of the invention can be used for implanting the spine fixing rod after being implanted based on different wounded positions, wherein the spine fixing rod body can be made into a sensing array by a preset material with good biocompatibility and high strength in a preset mode to obtain a strain signal of a spine fracture or fusion position, and a communication unit which is encapsulated together with the spine fixing rod body by an encapsulation body can send the strain signal to obtain the strain data of the fixing rod caused by spine stress in the process of spine fracture healing or fusion, so that the better follow-up imaging visual field is realized, the influence on the operation is reduced, the long-term, real-time and wireless monitoring of the spine fracture healing and fusion process can be realized, and the risk that a large number of additional electronic devices are implanted in the body in the prior art is avoided. From this, solved among the correlation technique, equipment is bulky, the structure is complicated or there is circuit cable exposure risk, and then be unfavorable for operation, and influence technical problem such as formation of image monitoring field of vision.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of a posterior approach spinal fixation rod provided in accordance with an embodiment of the present invention;
FIG. 2 is a schematic structural view of a posterior approach spinal fixation rod in accordance with one embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a system for monitoring strain of a retaining bar caused by a spinal column force according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a system for monitoring strain in a fixation rod induced by forces applied to the spine in accordance with one embodiment of the present invention;
fig. 5 is a flowchart of a method for monitoring strain of a fixation rod caused by a spinal column force according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The invention discloses a posterior approach spinal fixation rod and a system for monitoring strain of the spinal fixation rod caused by spinal stress, which are disclosed by the embodiment of the invention, and are described with reference to the attached drawings. The invention provides a spine fixing rod with a back approach, aiming at the technical problems that equipment is large in size and complex in structure or has exposure risk of a circuit cable, and is not beneficial to operation and influences imaging monitoring visual field and the like in the related technology mentioned in the background technology. From this, solved among the correlation technique, equipment is bulky, the structure is complicated or have circuit cable exposure risk, and then be unfavorable for operation, and influence technical problem such as formation of image monitoring field of vision.
Specifically, fig. 1 is a schematic structural view of a posterior approach spinal fixation rod provided in an embodiment of the present invention.
As shown in fig. 1, the posterior approach spinal fixation rod 10 includes: a spinal fixation rod body 101, a communication unit 102 and an encapsulation 103.
Specifically, the sensing array is made of a predetermined material at a predetermined position of the spinal fixation rod body 101 in a predetermined manner to sense strain thereon and output a strain signal.
In the actual implementation process, the embodiment of the invention can obtain the mechanical signal of the vertebra healing or fusion position through a contact type strain sensing mode to form a mechanical feedback mechanism, and particularly can implant the spine fixing rod body 101 into the position of a patient to serve as strain sensing equipment, sense the pressure on the implanted position and output a strain signal.
In order to avoid the problems of electrolyte leakage, pollution to the internal environment, influence on operation, influence on follow-up monitoring vision and the like caused by implantation of a large number of electronic devices, the spine fixing rod body 101 of the embodiment of the invention can be made of preset materials in a preset manner.
Optionally, in one embodiment of the invention, the predetermined location is a location corresponding to a spinal fracture or spinal fusion.
As a possible implementation manner, the preset position of the spine fixation rod body 101 according to the embodiment of the present invention may be a position corresponding to spine fracture or spine fusion, that is, a stress concentration position of the spine fixation rod body 101, so as to facilitate real-time monitoring of stress strain generated in the process of healing and fusing spine fracture.
Optionally, in an embodiment of the present invention, the material and/or the predetermined material of the spinal fixation rod body 101 is carbon fiber reinforced polyetheretherketone, and the predetermined manner is irradiation carbonization.
In some embodiments, the material and/or the predetermined material of the spine fixation rod body 101 is carbon fiber reinforced polyetheretherketone, and the predetermined manner is an irradiation carbonization manner, so that the embodiment of the present invention can monitor the internal mechanical environment in a long-term and real-time manner on the basis of retaining the original implant structure as much as possible and having no additional parts.
The carbon fiber reinforced polyether-ether-ketone composite material is a carbon fiber reinforced polyether-ether-ketone composite material, integrates the advantages of polyether-ether-ketone materials and carbon fiber materials, is light in weight, has excellent mechanical property, chemical corrosion resistance and biocompatibility, can have high conductivity and stress response characteristics after being carbonized by high-energy laser beams, and has a small electromagnetic interference of a resin matrix, so that the possibility of directly converting the posterior approach spinal fixation rod 10 into a sensing device is provided.
For another example, the preset mode may be an irradiation carbonization mode, and in the embodiment of the present invention, a multi-degree-of-freedom laser processing may be used to process a multi-working mode (resistance, inductance) sensing array in situ at a stress concentration portion of the spine fixing rod body 101, and a laser processing method is used to directly process a conductive region with a corresponding shape on a resin-based material on the posterior approach spine fixing rod 10 made of a resin-based material, so as to modify the material and sense an internal mechanical signal, a temperature signal, or a chemical signal.
The laser irradiation can adopt ultraviolet light, visible light and infrared light, the pulse width can be millisecond, nanosecond, picosecond, femtosecond and the like, and the required conductive area can be carbonized on the surface of the resin-based material. In addition, the embodiment of the invention can change the energy density of the laser by changing the laser parameters such as the output power, the scanning speed, the repetition frequency, the defocusing amount and the like of the laser, further change the appearance, the components, the resistivity and the like of the conductive area, and simultaneously can carry out pattern design on the carbonized conductive layer (carbonized layer) by designing the laser processing track to form different patterns and be suitable for sensors for composite signal sensing of mechanics (pressure, strain, friction and the like), temperature, chemistry (pH and the like).
For example, when the laser irradiation uses ultraviolet nanosecond laser, the output power of the laser may be 5W-10W, such as 5W, 6W, 7W, 8W, 9W, 10W, etc., the repetition frequency may be 40kHz-100kHz, such as 40kHz, 60kHz, 80kHz, 100kHz, etc., the scanning speed may be 20-110mm/s, such as 20mm/s, 40mm/s, 60mm/s, 80mm/s, 100mm/s, 110mm/s, etc., and the defocus amount may be 2-10mm, such as 2mm, 4mm, 6mm, 8mm, 10mm, etc. Therefore, the energy density irradiated on the surface of the carbon fiber reinforced polyether-ether-ketone matrix is larger than 0.83J/mm < 2 >, and a carbonization layer can be formed on the surface of the carbon fiber reinforced polyether-ether-ketone matrix.
Optionally, in one embodiment of the present invention, the spinal fixation rod body 101 includes a uni-axial spinal fixation rod and/or a multi-axial spinal fixation rod.
As shown in fig. 2, the spine fixation rod body 101 in the embodiment of the present invention may include a single-axis spine fixation rod and/or a multi-axis spine fixation rod, which are used for internal fixation of vertebral fractures, multi-axis multi-segment internal fixation, or minimally invasive vertebral surgery, so as to achieve real-time monitoring of the strain condition of the spine fixation rod caused by spinal stress during healing of vertebral fractures and intervertebral fusion for different diseases.
And the communication unit 102 is used for receiving the strain signal and sending the strain signal to a preset terminal so as to obtain the strain data of the fixing rod caused by the stress of the spine in the process of healing and fusing the spine fracture based on the strain signal.
As a possible implementation manner, the embodiment of the present invention may implement signal transmission through the communication unit 102, where the communication unit 102 may receive the strain signal output by the spine fixation rod body 101, and transmit the strain signal to a preset terminal, such as a signal receiver, through wireless transmission, so as to convert the strain signal into the fixation rod strain data caused by spine stress compatible with the process. The wireless transmission can be performed in various manners, such as a wired active manner, a wireless passive manner, and the like, which are described in detail below.
Optionally, in an embodiment of the present invention, the communication unit 102 includes a radio frequency tag formed on a surface of a predetermined material, so as to transmit a radio frequency signal formed by the strain signal to a predetermined terminal based on the radio frequency tag.
The wireless passive approach is described in detail herein. Specifically, when the preset material of the spine fixing rod body 101 is carbon fiber reinforced polyetheretherketone and the preset manufacturing method is an irradiation carbonization method, in the embodiment of the present invention, the sensor array is formed by irradiation carbonization of a high energy beam (such as laser) having a high energy density at three degrees of freedom, that is, in-situ carbonization of the surface of the carbon fiber reinforced polyetheretherketone substrate is realized, the formed carbonized layers of different shapes are used as radio frequency tags, and the different shapes have corresponding characteristic frequencies, and after strain is monitored, the resonance frequency changes correspondingly, so that real-time monitoring of stress strain is realized.
The radio frequency tag on the carbon fiber reinforced polyether-ether-ketone substrate can be in various shapes, and different shapes can produce different effects, for example, the radio frequency tag can be in a thin strip shape, is more sensitive to mechanical signals, and can accurately and timely respond to the mechanical signals so as to be used for feeding back the mechanical signals, such as stress, strain and the like; the radio frequency tag can be a bent connection structure with a plurality of slender lines, and the structure can sense slight temperature change so as to be used for feeding back a temperature signal; the radio frequency tag can be square and can be used for feeding back chemical signals, such as pH change in vivo and the like, by absorbing liquid components and sensing the change of the liquid. In the post-operation healing stage, the mechanical signal of the fracture end in the body can be obtained through a wireless communication mode in the embodiment of the invention, and is used for analyzing the prognosis condition of the patient operation, for example, when the preset terminal is close to the radio frequency tag on the posterior approach spinal fixation rod 10, a corresponding peak value can appear at the tag resonance frequency, and a person skilled in the art can calculate the stress state of the posterior approach spinal fixation rod 10 by analyzing the frequency, kurtosis and other information of the peak, so that the bone healing condition is evaluated, and the radio frequency wireless communication is realized.
The wired and passive approach is described in detail herein. In the laboratory research stage, because the device does not need to be implanted into the human body, for example, the device can be directly connected to a Personal Computer (PC) end through a data line for display, the embodiment of the invention can adopt a wired mode for data testing, calibration and evaluation, and is convenient for debugging equipment.
The wireless active mode is described in detail herein. In some embodiments, the embodiment of the invention can also send the strain signal obtained based on the spine fixing rod body 101 based on the wireless module, so as to realize wireless transmission of the strain signal, and the power module is used for supplying power to the wireless module, so that the normal operation of the wireless transmission is ensured.
In the actual implementation process, the communication unit 102 can receive the resistance signal of the spinal fixation rod body 101, i.e. the strain signal, the resistance signal can be converted into a voltage signal through a wheatstone bridge circuit and amplified to obtain an amplified signal, the amplified signal can be converted into a digital voltage signal through an analog-to-digital converter, the digital voltage signal can be wirelessly transmitted through a bluetooth module, i.e. a small peripheral circuit including a bluetooth module is additionally installed, the external mobile device which can receive the wireless bluetooth signal directly can use a mobile phone and the like to directly receive and display the signal, in addition, the portable vector network device can also cascade the bluetooth module to realize the data display of the mobile terminal.
The package 103 is used to package the spinal fixation rod body 101 and the communication unit 102.
In the actual implementation process, the embodiment of the invention can realize the packaging of the spine fixing rod body 101 and the communication unit 102 through the packaging body 103, avoid the adverse reaction caused by the direct contact between the spine fixing rod body 101 and the communication unit 102 and the human body, and improve the performance stability of the embodiment of the invention.
Alternatively, in one embodiment of the present invention, the package body 103 is made by depositing a layer of parylene by chemical vapor deposition.
In some embodiments, the package 103 may be a package protection made of a material with biocompatibility and high dielectric constant, which is prepared by depositing a parylene layer by chemical vapor deposition.
In summary, in the embodiment of the present invention, a multi-degree-of-freedom laser processing may be used to process a multi-working-mode (resistance, inductance) sensing array in situ at a stress concentration portion of a spine fixation rod body 101, a laser processing method is adopted to prepare a posterior entry spine fixation rod 10 with integrated functions of strain sensing and wireless signal transmission in situ through interaction between laser and a resin-based material on the spine fixation rod body 101 made of a resin material, a sensing unit is processed at a key position, and a mechanical model and a large amount of experimental data are combined to establish stress conditions of different topological structures for mapping and analyzing array data reaction.
The posterior approach spinal fixation rod 10 in the embodiment of the invention can improve the material of the posterior approach internal fixation rod in the related technology, adopts resin-based material to replace metal material, realizes better follow-up imaging visual field, can also realize the etching of the surface sensing array of the resin material, realizes the long-acting, real-time and wireless monitoring of the process of vertebral fracture and spinal fusion healing through the etching of the surface sensing array of the resin material, and avoids the risk of implanting a large amount of additional electronic devices into the body in the prior art.
Further, the posterior approach spinal fixation rod 10 can be implanted into a patient after being sterilized, and at the stage of healing of a broken bone of a vertebral body of the patient after implantation, an external radio frequency generator can be equipped to realize a vertebral healing monitoring process, the posterior approach spinal fixation rod 10 bears a large load at the early stage of vertebral healing and fusion, the load borne at the later stage is gradually reduced until the load is eliminated, wireless energy supply and wireless data reception are performed in the whole process, data are transmitted to a client in real time and uploaded to a cloud to realize big data analysis, so that long-term, effective and real-time noninvasive vertebral healing monitoring is realized, and technical support is provided for realizing postoperative personalized health management of the patient.
According to the posterior approach spine fixing rod provided by the embodiment of the invention, the posterior approach spine fixing rod can be implanted based on different wounded positions, wherein the spine fixing rod body can be made of a preset material with good biocompatibility and high strength in a preset mode to form a sensing array so as to obtain a strain signal of a spine fracture or fusion position, and a communication unit which is packaged together with the spine fixing rod body by a packaging body can send the strain signal so as to obtain the strain data of the fixing rod caused by spine stress in the process of spine fracture healing or fusion, so that better follow-up imaging visual field is realized, the influence on operation is reduced, long-acting, real-time and wireless monitoring of the process of spine fracture healing and fusion can be realized, and the risk that a large number of additional electronic devices are implanted into the body in the prior art is avoided. From this, solved among the correlation technique, equipment is bulky, the structure is complicated or there is circuit cable exposure risk, and then be unfavorable for operation, and influence technical problem such as formation of image monitoring field of vision.
The monitoring system for the strain of the fixing rod caused by the force of the spine is described with reference to the attached drawings.
Fig. 3 is a schematic diagram of a system 30 for monitoring strain in a fixation bar caused by forces applied to the spine according to an embodiment of the present invention.
As shown in FIG. 3, the system 30 for monitoring the strain of the fixation rod caused by the spinal force comprises: a posterior approach spinal fixation rod 10, a communication device 301, and a processor 302.
In particular, at least one posterior approach spinal fixation rod 10 for collecting strain signals of the spinal fracture healing and fusion process.
A communication device 301 for receiving strain signals of one or more posterior approach spinal fixation rods.
In the actual implementation process, the embodiment of the invention can receive the strain signals of one or more posterior approach spinal fixation rods 10 through the communication device 301, monitor the stress strain in the processes of vertebral body healing and fusion, facilitate the subsequent analysis of the strain signals, and realize the efficient postoperative follow-up and personalized rehabilitation of patients.
Optionally, in an embodiment of the present invention, the communication device 301 includes: a receiver.
The receiver comprises at least one antenna, and is used for receiving the radio frequency signal of the posterior approach spine fixing rod when the distance between the receiver and the posterior approach spine fixing rod is within a preset distance, and analyzing the strain signal based on the radio frequency signal.
The receiver includes at least one antenna to receive the rf signal of the posterior approach spine fixation rod 10 when the distance from the posterior approach spine fixation rod 10 is within a preset distance, and to analyze the strain signal based on the rf signal.
Specifically, in the embodiment of the present invention, an antenna (e.g., a linear microstrip antenna) may be used as a receiver, and when the antenna is close to the rf tag on the posterior approach spine fixing rod 10, the rf signal is received, and at this time, a corresponding peak value may appear at a resonant frequency of the rf tag, so as to analyze the strain signal based on the rf signal.
A processor 302 for obtaining fixation rod strain data caused by spinal forces of at least one patient based on strain signals of one or more posterior approach spinal fixation rods.
As a possible implementation manner, the embodiment of the invention can analyze the frequency, the kurtosis and other information of the peak through the processor 302, and then the stress state of the posterior approach spinal fixation rod 10 can be calculated, so as to evaluate the bone healing condition.
The working principle of the monitoring system for the strain of the fixing rod caused by the spinal stress according to the embodiment of the invention is explained in detail by combining with the figure 4.
As shown in fig. 4, in the embodiment of the present invention, a specific portion of a spine fixing rod body may be irradiated and carbonized to modify the specific portion to obtain a strain sensing characteristic, the posterior approach spine fixing rod 10 may achieve the purpose of monitoring a mechanical environment of a vertebral body healing and fusion process in real time after an operation, the posterior approach spine fixing rod 10 is sterilized and then implanted between vertebrae to be fused, and radio frequency communication may be performed through an external communication device 301 during a vertebral body healing and fusion stage of a patient after implantation, so that an in-vivo state of the posterior approach spine fixing rod 10 may be obtained, a strain sensing characteristic of a position of the posterior approach spine fixing rod may be analyzed, full life cycle state monitoring such as biomechanical monitoring of the posterior approach spine fixing rod 10 in the body is achieved, the load borne by the posterior approach spine fixing rod 10 at an initial stage of vertebral body fusion is large, the load borne by the posterior approach spine fixing rod at a later stage is gradually reduced until the posterior spine fixing rod disappears, wireless energy supply and wireless data reception are performed in the whole process, data are transmitted to a client in real time and uploaded to the healing process to achieve large data analysis, thereby achieving long-term, effective real-time noninvasive vertebral body and real-time monitoring of vertebral body and fusion, and providing technical support for achieving personalized health management of the patient after the operation.
In addition, besides radio frequency signals, the embodiment of the present invention may also use wireless transmission devices such as bluetooth, etc., as a substitute for the wireless transmission devices.
The posterior approach spinal fixation rod 10 can improve the material of the posterior approach internal fixation rod in the related technology, a resin-based material is selected to replace a metal material, so that a better follow-up imaging field of vision is realized, etching of a resin material surface sensing array can also be realized, long-acting, real-time and wireless monitoring of the process of vertebral fracture and spinal fusion healing is realized through the etching of the resin material surface sensing array, the risk that a large number of additional electronic devices are implanted into the body in the prior art is avoided, high-efficiency follow-up and personalized rehabilitation of a patient after operation are facilitated, data uploading cloud and data sharing are realized through the rear end, and the prevention and treatment of the problem after healing are improved through a big data method, and the reliability and timeliness of follow-up are improved.
According to the monitoring system for the strain of the fixing rod caused by the stress of the spine, which is provided by the embodiment of the invention, the spine fixing rod can be implanted based on different affected positions, wherein the spine fixing rod body can be made of a preset material with good biocompatibility and high strength into a sensing array in a preset mode to obtain a strain signal of a spine fracture or fusion position, and the communication unit which is packaged together with the spine fixing rod body by the packaging body can send the strain signal to obtain the strain data of the fixing rod caused by the stress of the spine in the healing or fusion process of the spine fracture, so that a better follow-up imaging visual field is realized, the influence on the operation is reduced, the long-term, real-time and wireless monitoring of the healing and fusion process of the spine fracture can be realized, and the risk that a large number of additional electronic devices are implanted into the body in the prior art is avoided. From this, solved among the correlation technique, equipment is bulky, the structure is complicated or there is circuit cable exposure risk, and then be unfavorable for operation, and influence technical problem such as formation of image monitoring field of vision.
The monitoring method for the strain of the fixing rod caused by the force of the spine according to the embodiment of the invention is described with reference to the attached drawings again.
FIG. 5 is a flow chart of a method for monitoring strain in a fixation bar caused by a force applied to the spine according to an embodiment of the present invention.
As shown in FIG. 5, the monitoring method for the strain of the fixing rod caused by the stress on the spine, which uses the monitoring system for the strain of the fixing rod caused by the stress on the spine of the embodiment, comprises the following steps:
in step S501, strain signals of the spinal fracture healing and fusion process are collected based on the posterior approach spinal fixation rod.
In step S502, strain data of the fixing rod caused by spinal stress of at least one patient is obtained according to the strain signals of the spinal fracture healing and fusion process.
It should be noted that the foregoing explanation of the embodiment of the monitoring system for detecting strain of the fixing rod caused by spinal stress is also applicable to the method for detecting strain of the fixing rod caused by spinal stress in this embodiment, and is not repeated herein.
According to the monitoring method for the strain of the fixing rod caused by the stress of the spine, which is provided by the embodiment of the invention, the spine fixing rod can enter the way after being implanted based on different affected positions, wherein the spine fixing rod body can be made of preset materials with good biocompatibility and high strength in a preset mode to form a sensing array so as to obtain a strain signal of a spine fracture or fusion position, and the communication unit which is encapsulated together with the spine fixing rod body by the encapsulating body can send the strain signal so as to obtain the strain data of the fixing rod caused by the stress of the spine in the healing or fusion process of the spine fracture, so that the better follow-up imaging visual field is realized, the influence on the operation is reduced, the long-acting, real-time and wireless monitoring of the healing and fusion process of the spine fracture can be realized, and the risk that a large number of additional electronic devices are implanted into the body in the prior art is avoided. From this, solved among the correlation technique, equipment is bulky, the structure is complicated or have circuit cable exposure risk, and then be unfavorable for operation, and influence technical problem such as formation of image monitoring field of vision.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the above monitoring method for strain of a fixation rod caused by spinal stress.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or N executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or N wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. If implemented in hardware as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A posterior approach spinal fixation rod, comprising:
the spine fixing rod comprises a spine fixing rod body, wherein a sensing array is made of preset materials at a preset position of the spine fixing rod body in a preset mode so as to sense strain on the sensing array and output a strain signal;
the communication unit is used for receiving the strain signal and sending the strain signal to a preset terminal so as to obtain the strain data of the fixing rod caused by the stress of the spine in the processes of healing and fusing the spine fracture based on the strain signal; and
and the packaging body is used for packaging the spine fixing rod body and the communication unit.
2. The posterior approach spinal fixation rod according to claim 1, wherein the spinal fixation rod body is made of carbon fiber reinforced polyetheretherketone and/or is made of a predetermined material, and the predetermined method is irradiation carbonization.
3. The posterior approach spinal fixation rod of claim 1, wherein the predetermined location is a location corresponding to a spinal fracture or spinal fusion.
4. The posterior approach spinal fixation rod of claim 1 wherein the spinal fixation rod body comprises a uni-axial spinal fixation rod and/or a multi-axial spinal fixation rod.
5. The posterior approach spinal fixation rod of claim 1, wherein the communication unit comprises a radio frequency tag formed on a surface of a predetermined material so as to transmit a radio frequency signal formed by the strain signal to the predetermined terminal based on the radio frequency tag.
6. The posterior approach spinal fixation rod of claim 1, wherein the package body is made by depositing a layer of parylene by chemical vapor deposition.
7. A monitoring system for strain of a fixing rod caused by spinal stress comprises:
at least one posterior approach spinal fixation rod according to any one of claims 1 to 6 for collecting strain signals of the healing and fusion process of spinal fractures;
the communication device is used for receiving strain signals of one or more posterior approach spinal fixation rods; and
and the processor is used for obtaining the strain data of the fixing rod caused by the spinal stress of at least one patient according to the strain signals of the one or more posterior approach spinal fixing rods.
8. The spinal force induced fixation bar strain monitoring system of claim 7, wherein the communication device comprises:
the receiver comprises at least one antenna, and is used for receiving the radio frequency signal of the posterior approach spine fixing rod when the distance between the receiver and the posterior approach spine fixing rod is within a preset distance, and analyzing the strain signal based on the radio frequency signal.
9. A method for monitoring the strain of a spinal column stress-induced fixing rod, which is characterized by using the system for monitoring the strain of the spinal column stress-induced fixing rod as claimed in any one of claims 7 to 8, wherein the method comprises the following steps:
collecting strain signals of the spinal fracture healing and fusion process based on a posterior approach spinal fixation rod;
and obtaining strain data of the fixing rod caused by the spinal stress of at least one patient according to the strain signals of the spinal fracture healing and fusion processes.
10. A computer-readable storage medium having stored thereon a computer program for execution by a processor to perform the method of monitoring strain in a spinal column induced by a force in a fixation rod of claim 9.
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| CN202211373486.4A CN115414104A (en) | 2022-11-04 | 2022-11-04 | Posterior approach spine fixing rod and monitoring system for strain of fixing rod caused by spine stress |
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