CN111904682A - Intelligent skeleton orthopedic system - Google Patents

Abstract

The invention discloses a skeletal intelligent orthopedic system, comprising an orthopedic device and a power supply device. The orthopedic device is composed of several shape memory alloy rods, and a temperature sensor and a stress sensor are arranged on the shape memory alloy rods. The system also includes The controller, the temperature sensor and the stress sensor respectively transmit the collected data to the controller, the controller reads the data, and then automatically controls the output of the power supply device according to the reading result. The invention can reduce the subjectivity of manual control, improve the sensitivity of operation, realize the intelligent control of the shape memory alloy rod, and also has the advantages of comfort, safety, good compliance, convenient use and the like.

Description

A skeletal intelligent orthopedic system

technical field

The invention relates to a bone intelligent orthopedic system, which belongs to the field of medical equipment.

Background technique

Skeletal deformities will not only cause external deformities such as hunchback, high and low shoulders, long and short legs, and skeletal asymmetry, but also cause abnormal organ development and dysfunction, which can lead to severe heart and lung failure, paralysis and even death. Helping patients with mild deformities to correct by means of medical aids is the most common and reliable treatment method. However, most of the current orthopedic devices are formed at one time and do not have the functions of intelligent deformation and intelligent regulation. The treatment cycle is long and the economic cost is high. Great discomfort and even damage to the human body, these defects all lead to poor patient compliance and unsatisfactory orthopedic results.

Since the discovery of nickel-titanium shape memory alloys in the 1960s, the material has been widely used in aerospace, metallurgy, manufacturing and many other fields. Nitinol alloys also have a wide range of applications in the medical field due to their good shape memory effect, superelasticity, low magnetic properties, wear resistance, fatigue resistance and biocompatibility. For example, various internal fixation devices, such as orthodontic arch wires, staples, rib claws, fibula embrasures, wrist triangular cages, interbody cages, etc., are widely used in vascular stents, vascular embolizers, vascular staplers, Operations such as intestinal staplers and the manufacture of various new medical devices such as prostheses and orthoses.

Compared with the existing bone orthoses, Nitinol can automatically deform under current, magnetic field, heating and other conditions, and the deformation amount is controllable, so it has better adaptability, more comfortable use and higher safety. However, the existing skeletal orthopedic devices based on NiTi shape memory alloys are still in the initial stage of application and development, and have defects such as low intelligence and insensitive operation. It is necessary to develop a new skeletal orthopedic system. The superelasticity of the alloy itself provides continuous orthopedic force, and on the other hand, the deformation amount of the alloy can be intelligently controlled, thereby providing dynamically adjustable orthopedic force, thereby improving the accuracy, sensitivity and curative effect of orthopedics.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an intelligent bone orthopedic system, which utilizes the shape memory function of nickel-titanium alloys, combined with advanced intelligent detection control and sensors, to realize automatic control of bone orthopedics, and also improves the orthopedic effect and use. of comfort and safety.

The above purpose is achieved through the following technical solutions:

A skeletal intelligent orthopedic system includes an orthopedic device and a power supply device, the orthopedic device is composed of a plurality of shape memory alloy rods, the shape memory alloy rods are electrically connected with a power supply device, and the power supply device is used to provide each shape memory alloy. The alloy rod independently outputs current and makes it deform. The shape memory alloy rod is provided with a temperature sensor and a stress sensor. The temperature sensor is used to collect the heating temperature of the shape memory alloy rod, and the stress sensor is used to collect the shape memory alloy rod. The pressure generated by the contact part of the alloy rod with the human body after deformation, the system also includes a controller, the controller is provided with an input device, a memory chip and a microprocessor, the input device is used for the user to input control instructions to the memory chip, The temperature sensor and the stress sensor are respectively connected with the memory chip through data lines and transmit the collected data to the memory chip, and the microprocessor is used to read the data in the memory chip and send an output current instruction to the power supply device.

Preferably, the power supply device includes an energy storage device and an energy supply device, the energy storage device is used to provide an energy source for the entire system, which can be a battery, and the energy supply device is used to separately supply each energy source according to the instructions of the microprocessor. A shape memory alloy rod outputs current.

Preferably, the input device is a liquid crystal touch screen.

Preferably, the system further includes a wearable human body physiological signal acquisition device, which is used to collect the physiological signals of the human body, and transmit the collected physiological signals to the storage chip.

Further preferably, the wearable human body physiological signal acquisition device performs data connection with the memory chip through bluetooth.

Further preferably, the physiological signals include body temperature, blood oxygen and heart rate.

Preferably, the system further includes an acceleration sensor for sensing the motion state of the bones, and the acceleration sensor transmits the collected data to the storage chip.

Further preferably, the acceleration sensor performs data connection with the storage chip through Bluetooth.

Preferably, the system further includes a communication device, the microprocessor transmits the input and output data synchronously to the communication device, and the communication device transmits the data to the server through the wireless network.

Further preferably, the wireless network is a 5G network.

The beneficial effects of the invention are: according to the relationship between the current, temperature and deformation of the nickel-titanium shape memory alloy, the invention can automatically control the deformation of the shape memory alloy by detecting the temperature on the shape memory alloy rod, thereby realizing the prevention of skeletal deformities. automatic correction and intelligent regulation. The present invention reduces the subjectivity of manual control, and can adjust the deformation amount in a timely manner, thereby making the orthopedic more precise and accurate. In addition, the present invention can automatically control the power output according to the stress of the shape memory alloy rod and the physiological signal of the patient , so it has high security. The invention also has the advantages of convenient use, comfort, good compliance, long service life and the like.

Description of drawings

Figure 1 is a circuit block diagram of the system.

Figure 2 is a schematic structural diagram of a shape memory alloy rod, in the figure: 1-shape memory alloy rod; 2-temperature sensor; 3-stress sensor, in the figure I represents the circuit system.

Detailed ways

The present invention will be described in detail below through specific embodiments.

Embodiment: The present invention provides a skeletal intelligent orthopedic system, as shown in Figure 1, the system consists of six major parts: orthopedic device, power supply device, controller, wearable human physiological signal acquisition device, acceleration sensor and communication device.

Among them, the orthopedic device and the power supply device are the core components of the system. The orthopedic device is composed of several shape memory alloy rods, and the shape memory alloy rods are electrically connected to the power supply device. Alloy rod independent output current. The shape memory alloy rod is deformed after being energized. The deformation is directly driven by the temperature. The deformation amount is directly related to the temperature. The current can increase the temperature of the alloy and the temperature is directly related to the amount of current. Therefore, the shape can be used. This property of memory alloys corrects skeletal deformities in patients. During use, several shape memory alloy rods are fixed around the deformed bone to be corrected, and the deformity of the bone is corrected by controlling the amount of current on the shape memory alloy rod to produce different deformations.

However, most of the existing orthopedic systems manually control the current according to the feeling of the patient or doctor. This control is very subjective, and the operation is very insensitive and cumbersome, which often leads to the failure to achieve the purpose of orthopedics, or even Operation errors can also occur and aggravate the deformity. To this end, we provide an intelligent orthopedic system solution for these defects: the shape memory alloy rod is provided with a temperature sensor and a stress sensor (as shown in Figure 2), and the temperature sensor is used to collect the shape memory alloy. The heating temperature of the rod, the stress sensor is used to collect the pressure generated by the shape memory alloy rod after the deformation and the contact part with the human body, the system also includes a controller, the controller is provided with an input device, a memory chip and a microprocessor, so The input device is a liquid crystal touch screen, which is used by the user to input control instructions to the memory chip. The temperature sensor and the stress sensor are respectively connected to the memory chip through data lines and transmit the collected data to the memory chip. The controller is used to read the data in the memory chip and send the output current command to the power supply device.

Due to the different degrees of skeletal deformity, the deformation amount required by the shape memory alloy rod is also different, and the invention can realize the automatic control of the output current and the deformation amount by detecting the temperature of the shape memory alloy rod. In addition, when using memory alloys to correct deformed bones, the deformed memory alloy rods generate pressure on the contact parts of the human body, and the magnitude of the pressure directly determines the comfort and compliance of the patient. If it is too large or too small, the information can be fed back to the controller in real time, and the controller can adjust the output of the power supply device according to the preset pressure value, so that the deformation of the shape memory alloy rod can be reduced or increased, thereby reducing the pain of the patient and improving the orthopedic effect. Treatment comfort, adherence, and efficacy.

The temperature sensor can use the LMT70 small wearable device temperature sensor. The stress sensor can use a flexible mechanical sensor. Its working principle is to convert the pressure signal generated by the shape memory alloy rod and the human body when it is deformed into an electrical signal, and integrate the signal processing and operation circuit in the sensor to make it have a simple signal. For details, please refer to the similar mechanical sensors in the academic paper "Research on Flexible Mechanical Sensors for Wearable Devices".

In the invention, by detecting the temperature and stress on the shape memory alloy rod, the controller simply processes the data detected by the temperature sensor and the stress sensor, so as to realize the automatic adjustment of the shape memory alloy rod shape variable, thereby realizing the orthopedic system. Intelligent, the system not only improves the sensitivity and accuracy of orthopedic operations, but also makes it more comfortable and safe for patients to use.

The power supply device includes an energy storage device and an energy supply device. The energy storage device is used to provide an energy source for the entire system, which can be a battery. The energy supply device outputs current to the shape memory alloy rods according to the instructions of the microprocessor. .

For some patients with poor constitution or basic diseases, adverse reactions such as fever, arrhythmia, and hypoxia are prone to occur during the orthopedic process. Therefore, it is necessary to monitor the physiological signs of the patients to improve the safety of treatment. For this reason, the system There is also a wearable human physiological signal acquisition device, which is used to collect physiological signals such as body temperature, blood oxygen, and heart rate. The device has been widely used in smart wearable devices such as sports bracelets. The human physiological signal acquisition device transmits the collected physiological signals to the memory chip through Bluetooth. After the microprocessor reads it, it makes a simple comparison to determine whether the physiological signal is abnormal, and then controls the output of the power supply device according to the judgment result. safety of the system.

Since the working parameters of the orthopedic device are different when the human body is walking, standing, sitting and lying down, it is necessary to adjust the current and the deformation amount on the shape memory alloy rod according to the corresponding action. Therefore, the present invention is also provided with an acceleration sensor to use In order to sense the motion state of the bone to be orthopedic, the acceleration sensor transmits the collected data to the memory chip through Bluetooth, and the microprocessor reads and controls the output of the power supply device, for example, when the human body is in a motion state such as walking or labor , the deformation amount of the shape memory alloy rod can be appropriately reduced, and when the human body is in a standing or resting state, the deformation amount of the shape memory alloy rod can be appropriately increased, thereby further improving the curative effect and comfort of orthopedics.

The system also includes a communication device, the controller transmits the input and output data synchronously to the communication device, and the communication device transmits the data to the server through the 5G wireless network, so that the doctor can grasp the working status of the orthopedic device at any time according to the server terminal, And the working parameters of the orthopedic device can be remotely adjusted in time according to the patient's use and treatment conditions.

The following takes the spinal deformity as an example to further describe the use of the device:

Before use, the patient wears the orthopedic device, the doctor or the patient selects the orientation and degree of the spinal deformity, and inputs the selection result on the LCD touch screen. The deformity orientation displayed on the LCD touch screen can be left, right, forward or backward. The degree of deformity is divided into grades I, II, III, and IV. The higher the grade, the greater the degree of deformity. variables are also higher. At the same time, the doctor or the patient can also input the pressure value that the patient can tolerate on the LCD touch screen as needed. The pressure value is represented by large, medium and small. Patients of different genders, ages and physiques have different degrees of pressure tolerance. For example, For women and children, the pressure value can be set to small, for young adults, the pressure value can be set to high, and for the elderly, the pressure can be set to "medium". In addition, the LCD touch screen also has four modes of walking, standing, sitting, and lying, as well as the display function of body temperature, blood oxygen, and heart rate.

The LCD touch screen transmits the input results to the memory chip, and the microprocessor reads and calculates to obtain the current amount and temperature required for the deformation of the corresponding shape memory alloy rod. The relationship between the degree of deformity-memory alloy deformation-temperature-current has been obtained by the applicant through experiments before this patent application, and a corresponding calculation program has been designed according to the experimental results. The improvement of the present invention lies in the structure and does not depend on the program. In addition, since a large number of literatures have reported the deformation principle of memory alloys and the relationship between temperature, current and deformation amount in the prior art, those skilled in the art can also easily independently design corresponding calculation software according to this principle. Therefore, , the procedures involved in the present invention are simple and known procedures in the art.

The microprocessor issues an output current instruction to the power supply according to the calculation result. For example, when it is "left tilt, I level", the power supply outputs a relatively low current to the shape memory alloy rod on the left side of the device, so that the memory alloy on the left side is Warming produces deformation to correct the deformity. The temperature sensor transmits the detected temperature of the memory alloy to the memory chip, and the microprocessor reads it so that the temperature and deformation of the memory alloy are always controlled within a reasonable range.

During the treatment process, when the stress generated by the excessive deformation of the memory alloy exceeds the set pressure value, the microprocessor sends an instruction to reduce the output current to the power supply. On the contrary, when the stress is too low, the output current is increased to improve the curative effect. The system uses the principle of pressure value priority, that is, once the pressure value is close to the set value, even if the deformation of the memory alloy does not reach the set level, the system will automatically reduce its current to maintain the deformation to ensure that the Comfort and safety.

The physiological signal collector feeds the collected physiological signal data to the storage chip through Bluetooth. The storage chip also stores the data of normal person's body temperature, blood oxygen, and heart rate. The microprocessor reads the data in the storage chip, and after a simple comparison Determine whether the physiological signal is abnormal, and then control the output of the power supply according to the judgment result. For example, when any value of the detected body temperature, blood oxygen, and heart rate is greater than the normal value, the microprocessor immediately sends an instruction to the power supply to stop the current output , so that the memory alloy quickly returns to the state before deformation, thereby greatly improving the safety of the device.

In the four modes of walking, standing, sitting and lying down, the deformation of the memory alloy is set as lying > sitting > standing > walking, and the system can automatically adjust the current of the memory alloy to a certain level in each mode.

The shape memory alloy rod, controller, temperature sensor, stress sensor, physiological signal collector, etc. in the present invention are all existing devices. It can be obtained by way or simple modification on the basis of the existing device.

Claims (10)

1. An intelligent bone orthopedic system, which comprises an orthopedic device and a power supply device, wherein the orthopedic device is composed of a plurality of shape memory alloy rods, the shape memory alloy rods are electrically connected with the power supply device, the power supply device is used for independently outputting current to each shape memory alloy rod and enabling the shape memory alloy rod to generate deformation, and the intelligent bone orthopedic system is characterized in that: the system comprises a shape memory alloy rod, and is characterized in that a temperature sensor and a stress sensor are arranged on the shape memory alloy rod, the temperature sensor is used for collecting the heating temperature of the shape memory alloy rod, the stress sensor is used for collecting the pressure generated by the shape memory alloy rod after deformation and the contact part of a human body, the system further comprises a controller, the controller is provided with an input device, a storage chip and a microprocessor, the input device is used for a user to input a control instruction to the storage chip, the temperature sensor and the stress sensor are respectively connected with the storage chip through data lines and transmit the collected data to the storage chip, and the microprocessor is used for reading the data in the storage chip and outputting a current instruction to a power supply device.

2. The intelligent bone reshaping system of claim 1, wherein: the power supply device comprises an energy storage device and an energy supply device, the energy storage device is used for providing an energy source for the whole system, the energy storage device can be a storage battery, and the energy supply device is used for respectively outputting current to each shape memory alloy rod according to the instruction of the microprocessor.

3. The intelligent bone reshaping system of claim 1, wherein: the input device is a liquid crystal touch screen.

4. The intelligent bone reshaping system of claim 1, wherein: the wearable human body physiological signal acquisition device is used for acquiring a human body physiological signal and transmitting the acquired physiological signal to the storage chip.

5. The intelligent bone reshaping system of claim 4, wherein: human physiological signal collection system of wearing formula carries out data connection through bluetooth and memory chip.

6. The intelligent bone reshaping system of claim 4, wherein: the physiological signals include body temperature, blood oxygen, and heart rate.

7. The intelligent bone reshaping system of claim 4, wherein: the bone motion monitoring system further comprises an acceleration sensor used for sensing the motion state of the bone, and the acceleration sensor transmits the collected data to the storage chip.

8. The intelligent bone reshaping system of claim 7, wherein: the acceleration sensor is in data connection with the storage chip through Bluetooth.

9. The intelligent bone reshaping system of claim 7, wherein: the microprocessor synchronously transmits input and output data to the communication device, and the communication device transmits the data to the server through a wireless network.

10. The intelligent bone reshaping system of claim 9, wherein: the wireless network is a 5G network.

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