Method and device for automatically associating operating room equipment with patient

Abstract

The invention discloses an automatic association method and device for operating room equipment and a patient, and the method comprises the steps: sensing the low-frequency electromagnetic energy difference generated by the equipment in different working states in a non-intervention manner, and obtaining a state set and a position set of a plurality of medical equipment during the operation of the patient; and transmitting the state set and the position set to a central management server through long-distance radio or Bluetooth broadcast, associating the state set and the position set with the information of the patient, and generating equipment use records of a plurality of medical equipment. According to the automatic association method and device for the operating room equipment and the patient, through comprehensive application of the non-intrusive sensing technology, the long-distance wireless transmission technology and the Internet of Things technology, real-time monitoring of the state and position information of the medical equipment is achieved, and therefore effective information association is carried out; the problem that it is difficult to perceive the state and position of equipment in a non-interventional mode, and therefore automatic association of the equipment and patient information is achieved in the whole surgery period can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of data processing, and in particular to a method and a device for automatically associating operating room equipment with patients. Background Art

[0002] In the operating room of a modern hospital, the use of medical equipment is a key part of the surgical process. Each operation relies on various medical equipment, such as anesthesia machines, surgical lights, monitors, etc. The use records of equipment during surgery can reflect in detail the use and status of medical equipment during surgery. These records are an important part of medical quality management. Through them, medical institutions can promptly discover and correct improper behavior or potential problems in the use of equipment, thereby ensuring the safety and standardization of medical work. At present, the use records of equipment during surgery and the way they are associated with patients are mainly recorded manually, and traditional equipment monitoring solutions mostly rely on device interface protocols or current power sensing methods.

[0003] However, the manual recording method is not only inefficient, but also has the risk of incomplete or erroneous records during the entire operation. In addition, relying on device interface protocols or current power sensing methods to monitor equipment has problems such as interface occupancy and device overload, and it is difficult to achieve efficient integration with the Internet of Things system. Summary of the invention

[0004] The present invention provides a method and device for automatically associating operating room equipment with patients, so as to solve the problem that it is difficult to perceive the equipment status and position in a non-invasive manner, thereby realizing automatic association of equipment with patient information throughout the entire operation cycle.

[0005] By non-invasively sensing the difference in low-frequency electromagnetic energy generated by the device under different working states, a state set and a position set of several medical devices during the patient's surgery are obtained; wherein the several medical devices are determined according to the specific type of surgery to be performed on the patient and the actual needs of the surgery; The status set and location set are transmitted to a central management server via long-distance radio or Bluetooth broadcasting, and are associated with the patient's information to generate device usage records for the plurality of medical devices.

[0006] The present invention can monitor the working state and position changes of the device in real time by sensing the difference in low-frequency electromagnetic energy generated by the device under different working states, and this non-invasive sensing method avoids errors and failures caused by improper sensor installation or contact problems, and can improve the accuracy of the data. The device status set and location set are transmitted to the central management server in real time using long-distance radio or Bluetooth broadcast technology, which can avoid the inconvenience and limitations caused by wired connections and improve the efficiency and flexibility of data transmission. The status set and location set transmitted to the central management server are associated with the patient's information to generate a device usage record. This automated processing method not only reduces the tediousness and errors of manual operations, but also improves the efficiency and accuracy of data processing.

[0007] Compared with the existing technology, the present invention realizes real-time monitoring of the status and location information of medical equipment through the comprehensive application of non-invasive sensing technology, long-distance wireless transmission technology and Internet of Things technology, thereby performing effective information association. Therefore, it can solve the problem of difficulty in sensing the status and location of equipment in a non-invasive way, thereby realizing automatic association of equipment and patient information throughout the entire surgical cycle.

[0008] As a preferred solution, the difference in low-frequency electromagnetic energy generated by the equipment in different working states is sensed in a non-invasive manner to obtain the state set and position set of several medical devices during the patient's surgery, specifically: When the operation of the patient begins, generating an operation record according to the equipment information and personnel information of the operation, and locking the plurality of medical devices; Sensing the difference of low-frequency electromagnetic energy generated by the plurality of medical devices in different working states in a non-invasive manner, and obtaining the state set of the plurality of medical devices during the patient surgery; The floor and location of the operation are calculated according to the signal strength received by the Bluetooth beacon, and the location set of the medical devices during the patient's operation is obtained.

[0009] This preferred solution can monitor the status and location information of medical equipment in real time by sensing the difference in low-frequency electromagnetic energy generated by the equipment under different working conditions in a non-invasive manner, which helps to detect abnormal conditions of the equipment in a timely manner and avoid safety hazards during surgery; and the non-invasive sensing method will not cause any interference to the normal operation of the equipment, ensuring the continuity and stability of the surgery. By obtaining the location set of medical equipment during surgery, accurate tracking and management of the equipment can be achieved.

[0010] As a preferred solution, the difference in low-frequency electromagnetic energy generated by the medical devices in different working states is sensed in a non-invasive manner to obtain the state set of the medical devices during the patient's surgery, specifically: Acquiring the real-time low-frequency electromagnetic wave energy radiated by the medical devices through the inductive sensor of the non-invasive device; wherein the non-invasive device is based on the principle of electromagnetic induction and is established according to the inductive sensor and the signal processing module; Performing signal conditioning on the real-time low-frequency electromagnetic wave energy through a signal processing module of the non-invasive device to obtain an electromagnetic energy value set; Based on the electromagnetic characteristics of the equipment, the equipment usage status corresponding to the electromagnetic energy value set is determined according to the mapping relationship between the electromagnetic energy value and the equipment status, so as to obtain the status set of the several medical devices during the patient surgery.

[0011] In this preferred solution, the inductive sensor has high sensitivity and can sense tiny changes in physical quantities and convert them into electrical signal outputs, so that the system can accurately obtain the low-frequency electromagnetic wave energy of the medical device. Because medical devices in different states will radiate electromagnetic waves of different intensities and frequencies, determining the state of the medical device based on its electromagnetic characteristics has high accuracy and reliability.

[0012] As a preferred solution, the floor and location of the surgery are calculated according to the signal strength received by the Bluetooth beacon, and the location set of the medical devices during the patient's surgery is obtained, specifically: Continuously receiving Bluetooth signals within the range of the plurality of medical devices according to the positioning receiver, and obtaining RSS signals of Bluetooth beacons; The RSS signal is smoothed, and the processed RSS signal is compared with a preset fingerprint library to obtain the position set of several medical devices corresponding to the collection point with the highest similarity.

[0013] In this preferred solution, the RSS signal emitted by the Bluetooth beacon is relatively stable, which helps to reduce signal interference and errors; by continuously receiving Bluetooth signals and performing smoothing processing, the impact of signal fluctuations on positioning accuracy can be further reduced.

[0014] As a preferred solution, the fingerprint library is specifically: Determine the location coverage area where the surgery is located based on Bluetooth beacons; In the positioning coverage area, move along a preset marked straight line at a stable and uniform speed to obtain a set of Bluetooth beacon signal strengths corresponding to a number of single collection paths; The Bluetooth beacon signal strength set is stored according to the location points and signal characteristics to obtain the fingerprint library.

[0015] This preferred solution avoids signal strength fluctuations caused by speed changes or unstable paths by moving at a stable and uniform speed within the positioning coverage area and collecting Bluetooth beacon signal strength, ensuring that the signal strength data collected each time is accurate and reliable. Each record in the fingerprint library contains the location point and the corresponding Bluetooth beacon signal feature. By matching it with the real-time collected signal strength, the location of the device can be accurately determined. This matching method has high accuracy and can meet the needs of high-precision positioning scenarios such as operating rooms.

[0016] As a preferred solution, the state set and location set are transmitted to a central management server via long-distance radio or Bluetooth broadcasting, and are associated with the patient's information to generate device usage records of the plurality of medical devices, specifically: Based on the preset anti-interference technology, the state set and the position set are transmitted to the central management server by controlling the radio signal to jump between several frequencies; or based on the preset anti-congestion technology, the state set and the position set are transmitted to the central management server by penetrating obstacles by way of Bluetooth broadcast reflection; In the central management server, based on the state set and the location set, the device actually used during the patient's surgery is determined by a timestamp matching rule to obtain actual device usage information; The actual use information of the device is associated with the information of the patient to obtain the use record of the device.

[0017] This preferred solution can effectively avoid signal interference and ensure the stability and reliability of data transmission by controlling the radio signal to jump between several frequencies. By using Bluetooth broadcast reflection to penetrate obstacles, the continuity of data transmission can be maintained in the case of channel congestion, ensuring the real-time update of the device status set and location set; and in the medical surgical environment, electromagnetic interference may be generated when multiple devices are running at the same time. Through anti-interference technology and anti-congestion technology, the problem of interference between multiple surgical devices during data transmission can be solved, ensuring that the status data and location data of multiple surgical devices can be accurately transmitted.

[0018] As a preferred solution, in the central management server, based on the state set and the location set, the device actually used during the patient's surgery is determined by a timestamp matching rule to obtain the actual use information of the device, specifically: In the central management server, determining the usage time periods occupied by the plurality of medical devices during actual use according to the state set and the location set; Obtaining the surgical time period from when the patient enters the operating room and begins surgery to when the patient leaves the operating room after surgery; By comparing the usage time period with the operation time period, the equipment set actually used by the patient during the operation is obtained, and the information of the equipment set is used as the actual equipment usage information.

[0019] This preferred solution can achieve accurate tracking of equipment usage by accurately recording the time period of medical equipment use and the patient's surgery time period, avoiding equipment usage disputes caused by time ambiguity or inaccurate records in traditional methods.

[0020] As a preferred solution, the anti-interference technology is specifically: Establish the anti-interference technology based on network layout and frequency band selection optimization technology, signal enhancement and interference suppression technology, and power regulation and optimization technology; Among them, the network layout and frequency band selection optimization technology is achieved by adjusting the base station layout and radio frequency band in the wireless communication technology network, the signal enhancement and interference suppression technology is achieved by expanding the signal coverage range and controlling the signal frequency hopping, and the power regulation and optimization technology is achieved by adjusting the radio transmission power.

[0021] This preferred solution can optimize the signal transmission path and reduce signal attenuation and interference by adjusting the base station layout in the wireless communication technology network; selecting the appropriate radio frequency band can reduce frequency band congestion and interference and improve the efficiency and accuracy of signal transmission. Reducing interference by controlling signal frequency hopping helps to ensure the clarity and accuracy of the signal during transmission and improve the performance of the communication system. The network layout, frequency band selection and signal enhancement technologies in the anti-interference technology can be flexibly adjusted according to the actual environmental requirements, so that the communication system can better adapt to the needs of different environments and scenarios, and improve the flexibility and scalability of the system.

[0022] As a preferred solution, after generating the equipment usage records of the plurality of medical devices, the method further includes: Before the operation of the patient begins, check whether the quantity of surgical instruments and drugs meets the preset value according to the type of operation, and check whether the surgical instruments meet the preset safety standards to obtain the safety inspection results; By evaluating whether the medical staff followed the preset surgical procedures during the operation, the surgical operation compliance inspection results were obtained; The safety inspection result and the surgical operation compliance inspection result are added to the equipment usage record.

[0023] This preferred solution can ensure that the operation will not be interrupted or delayed due to the lack of necessary instruments or medicines during the operation by checking whether the number of surgical instruments and medicines meets the preset values ​​before the operation, thereby improving the safety of the operation; at the same time, checking whether the surgical instruments meet the preset safety standards can effectively avoid the use of defective or unqualified instruments for surgery, further reducing the risk of surgery. By evaluating whether the medical staff strictly follow the preset surgical operating procedures during the operation, it can ensure that every step of the surgical operation meets medical standards and regulations, thereby improving the success rate of the operation and the patient's recovery effect. This full-cycle detection and recording method is conducive to ensuring the smooth progress of the operation and ensuring the traceability of the data.

[0024] The present application also provides an automatic association device for operating room equipment and patients, including a data module and an association module; The data module is used to sense the difference in low-frequency electromagnetic energy generated by the device in different working states in a non-invasive manner, and obtain a state set and a position set of several medical devices during the patient's surgery; wherein the several medical devices are determined according to the specific type of surgery to be performed on the patient and the actual needs of the surgery; The association module is used to transmit the status set and location set to the central management server via long-distance radio or Bluetooth broadcast, and associate them with the patient's information to generate device usage records of the multiple medical devices.

[0025] As a preferred solution, the data module includes a preprocessing unit, a state unit and a position unit; The pre-processing unit is used to generate a surgery record according to the equipment information and personnel information of the surgery and lock the several medical devices when the surgery of the patient begins; The state unit is used to sense the difference of low-frequency electromagnetic energy generated by the plurality of medical devices in different working states in a non-invasive manner to obtain the state set of the plurality of medical devices during the patient surgery; The location unit is used to calculate the floor and location of the operation according to the signal strength received by the Bluetooth beacon, and obtain the location set of the several medical devices during the patient's operation.

[0026] As a preferred solution, the state unit includes an energy subunit, a conditioning subunit and a mapping subunit; The energy subunit is used to obtain the real-time low-frequency electromagnetic wave energy radiated by the medical devices through the inductive sensor of the non-invasive device; wherein the non-invasive device is based on the principle of electromagnetic induction and is established according to the inductive sensor and the signal processing module; The conditioning subunit is used to perform signal conditioning on the real-time low-frequency electromagnetic wave energy through the signal processing module of the non-invasive device to obtain an electromagnetic energy value set; The mapping subunit is used to determine the device usage status corresponding to the electromagnetic energy value set based on the electromagnetic characteristics of the device and the mapping relationship between the electromagnetic energy value and the device status, so as to obtain the status set of the several medical devices during the patient surgery.

[0027] As a preferred solution, the position unit includes a signal subunit and a position subunit; Wherein, the signal subunit is used to continuously receive Bluetooth signals within the range of the plurality of medical devices according to the positioning receiver to obtain the RSS signal of the Bluetooth beacon; The position subunit is used to perform smoothing processing on the RSS signal, and compare the processed RSS signal with a preset fingerprint library to obtain a comparison of several medical devices corresponding to the collection point with the highest similarity.

[0028] As a preferred solution, the fingerprint library is specifically: Determine the location coverage area where the surgery is located based on Bluetooth beacons; In the positioning coverage area, move along a preset marked straight line at a stable and uniform speed to obtain a set of Bluetooth beacon signal strengths corresponding to a number of single collection paths; The Bluetooth beacon signal strength set is stored according to the location points and signal characteristics to obtain the fingerprint library.

[0029] As a preferred solution, the association module includes a transmission unit, a device unit and a recording unit; The transmission unit is used to transmit the state set and the position set to the central management server by controlling the radio signal to jump between several frequencies based on a preset anti-interference technology; or to transmit the state set and the position set to the central management server by penetrating obstacles by Bluetooth broadcast reflection based on a preset anti-congestion technology; The equipment unit is used to determine the equipment actually used during the patient's surgery based on the state set and the location set in the central management server through a timestamp matching rule to obtain the equipment actual use information; The recording unit is used to associate the actual use information of the device with the information of the patient to obtain the device use record.

[0030] As a preferred solution, the equipment unit includes an occupancy subunit, a usage subunit and a comparison subunit; Wherein, the occupation subunit is used to determine, in the central management server, the usage time periods occupied by the plurality of medical devices during actual use according to the state set and the location set; The use subunit is used to obtain the operation time period from when the patient enters the operating room and starts the operation to when the patient leaves the operating room after the operation; The comparison subunit is used to obtain the equipment set actually used by the patient during the operation by comparing the usage time period with the operation time period, and use the information of the equipment set as the actual equipment usage information.

[0031] As a preferred solution, the anti-interference technology is specifically: Establish the anti-interference technology based on network layout and frequency band selection optimization technology, signal enhancement and interference suppression technology, and power regulation and optimization technology; Among them, the network layout and frequency band selection optimization technology is achieved by adjusting the base station layout and radio frequency band in the wireless communication technology network, the signal enhancement and interference suppression technology is achieved by expanding the signal coverage range and controlling the signal frequency hopping, and the power regulation and optimization technology is achieved by adjusting the radio transmission power.

[0032] As a preferred solution, after the association module, it also includes a first inspection unit, a second inspection unit and a synthesis unit; Wherein, the first inspection unit is used to check whether the quantity of surgical instruments and drugs meets the preset value according to the type of surgery before the operation of the patient begins, and to check whether the surgical instruments meet the preset safety standards to obtain the safety inspection result; The second inspection unit is used to obtain the surgical operation compliance inspection result by evaluating whether the medical staff complies with the preset surgical operation procedures during the operation; The integration unit is used to add the safety inspection result and the surgical operation compliance inspection result to the equipment usage record.

[0033] The present application also provides a storage medium, on which a computer program is stored. The computer program is called and executed by a computer to implement the above-mentioned method for automatically associating operating room equipment with patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] FIG1 is a flow chart of a method for automatically associating operating room equipment with a patient provided in an embodiment of the present application; FIG2 is a schematic diagram of the structure of an automatic association device between operating room equipment and a patient provided in an embodiment of the present application. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0036] In the description of the present application, unless otherwise specified, “several” means two or more.

[0037] An automatic association method between operating room equipment and patients provided in an embodiment of the present application is mainly used when it is necessary to achieve real-time monitoring of the status and position of surgical equipment throughout the entire operation cycle, and automatically record the equipment information used by the patient during the operation, thereby overcoming the low efficiency and poor accuracy of equipment monitoring and recording in existing surgical management.

[0038] Embodiment 1: Please refer to FIG1 . The embodiment of the present application provides a method for automatically associating operating room equipment with patients, including S1 to S2. The specific implementation steps are as follows: S1. The difference in low-frequency electromagnetic energy generated by the equipment in different working states is sensed in a non-invasive manner to obtain the state set and position set of several medical devices during the patient's surgery.

[0039] Step S1 of the embodiment of the present application includes S1.1 to S1.4, wherein S1.1 is a process of data preprocessing, S1.2 is a process of generating a state set of a medical device, S1.3 is a process of establishing a fingerprint library, and S1.4 is a process of generating a location set of a medical device, specifically: S1.1. Record the patient's surgery time, operating room number, surgery type, and detailed information of medical staff through the surgery management system; When the patient's surgery begins, the surgical management system is controlled to generate a surgical record based on detailed information such as the equipment information and personnel information of the surgery, and locks the resource information related to several medical devices in the operating room within a preset specific time period, including the operating room number, the start and end time of the surgery, and surgical instruments, etc.; the end time includes the preset end time and the actual end time; and several medical devices are determined based on the specific type of surgery to be performed on the patient, the actual needs of the surgery, and the monitoring and support equipment that may be needed during the operation.

[0040] The preset end time is determined as follows: ① Historical data: The surgical management system analyzes historical data of similar surgical types, combines the complexity of the surgery, the patient's physical condition and the experience of the surgeon, and derives the preset end time of the surgery; among them, historical data includes the average duration and standard deviation of similar types of surgeries.

[0041] ②Experience of the doctor and surgical team: Through feedback interaction with the surgeon and other surgical team members, the estimated duration is further adjusted based on their subjective assessment of the complexity of the surgery. For example, in some cases, the doctor may inform the surgeon of the special complexity of the surgery in advance, and the preset end time will be extended accordingly.

[0042] ③ Equipment usage: The preset end time of the operation is further determined based on the usage data of medical equipment during the operation. For example, if key equipment (such as anesthesia machines, surgical lights, etc.) is used for a long time, it can prompt the system that the operation may exceed expectations, and an alarm will be issued to remind the surgical team to pay attention to potential problems in the progress of the operation.

[0043] Among them, the locking and adjustment methods of the actual end time are as follows: ①Entering the end time of the operation: When the operation actually ends, the circulating nurse or other personnel will manually enter the end time in the operation management system.

[0044] ② Data locking and adjustment: The final data of the operation is locked according to the actual end time, including the operation duration, equipment usage time and personnel participation time. If there is a large difference between the actual operation duration and the estimated duration, the corresponding adjustment and optimization will be automatically performed to update the estimated duration of similar operations in the future to improve the accuracy of the operation duration prediction.

[0045] ③ Integration with the Internet of Things system: Determine the actual end time of the surgery by tracking the status and location of the equipment in real time. For example, if some equipment is in use for a long time and the surgery is not over, the system can predict the possibility of surgery delay based on such data and update the actual end time in real time.

[0046] It should be noted that the system architecture in the present application includes an Internet of Things sensing device, a surgical management system, an equipment positioning and efficiency system, a central management server, and a data storage module.

[0047] S1.2. Based on the equipment positioning and performance system, the low-frequency electromagnetic wave energy of several medical devices is continuously and uninterruptedly detected by the inductive sensor and nanowatt-level operational amplifier of the non-invasive device in the IoT sensing device, and the real-time low-frequency electromagnetic wave energy radiated by the relevant equipment generated by several medical devices in different working states is obtained; wherein, the non-invasive device is based on the principle of electromagnetic induction and is established according to the inductive sensor and the signal processing module; Performing high-frequency filtering on the real-time low-frequency electromagnetic wave energy through a signal processing module of a non-invasive device to obtain an electromagnetic energy value set; Based on the electromagnetic characteristics of the equipment, the equipment usage status corresponding to the electromagnetic energy value set is determined according to the mapping relationship between the electromagnetic energy value and the equipment status, and the status set of several medical devices during the patient's surgery is obtained.

[0048] This embodiment S1.2 senses the difference in low-frequency electromagnetic energy generated by the device under different working conditions in a non-invasive manner, and can monitor the status and location information of the medical device in real time, which helps to detect abnormal conditions of the equipment in a timely manner and avoid potential safety hazards during surgery; and the non-invasive sensing method will not cause any interference to the normal operation of the equipment, ensuring the continuity and stability of the operation; this method does not require connecting to the device port or interacting with the device control system for data, and the sensing device can accurately identify the three states of the device: shutdown, standby, and operation. Therefore, this non-invasive sensing method not only avoids the problem of device port occupation, but also greatly reduces the cost and installation complexity of sensing the operating status of the device. By obtaining the location set of medical equipment during surgery, accurate tracking and management of the equipment can be achieved; In addition, the inductive sensor has high sensitivity and can sense tiny changes in physical quantities and convert them into electrical signal output, which enables the system to accurately obtain the low-frequency electromagnetic wave energy of medical equipment. Because medical equipment in different states will radiate electromagnetic waves of different intensities and frequencies, it is more accurate and reliable to determine the state of the medical equipment based on its electromagnetic characteristics.

[0049] S1.3. Determine the location coverage area of ​​the surgery based on the Bluetooth beacon; In the positioning coverage area, hold a mobile phone or other device and move forward along the preset marked straight line at a stable and uniform speed, so that the Bluetooth beacon signal strength is recorded and evenly distributed on the collection line segment, and a set of Bluetooth beacon signal strengths corresponding to several single collection paths in the positioning coverage area is obtained; The Bluetooth beacon signal strength set is stored according to the location points and signal characteristics to obtain a fingerprint library (radiomap); Generate floor score array based on fingerprint library Specifically, after the data is collected, a floor score correspondence table is generated by traversing the RPs (receiving points) of each floor and receiving The strongest RSS signal (received signal strength) is recorded and obtained The floor score array ;in, Refers to a specific Bluetooth device, Bluetooth tag, Bluetooth beacon, or any other entity that can emit Bluetooth signals and be received by RPs.

[0050] Among them, the floor score array can be expressed as: in, represents the transpose operation, and Received when collecting on the first floor The strongest RSS and second floor collection received The strongest RSS, For the Received during floor collection The strongest RSS, in dBm. The signal is calculated as -100. The highest score will be obtained on the paved floor, but if the Bluetooth beacon is deployed close to the hollow area, the score of the upper or lower floor may be close to that of the paved floor.

[0051] Among them, the equipment positioning and efficiency system relies on the Internet of Things technology, and it is necessary to build a basic positioning network and data transmission network in the operating room. For example, in a layout diagram containing 30 operating rooms, 150 Bluetooth beacons can be deployed (an average of 2 per operating room) to provide equipment positioning functions at the operating room level. At the same time, it is equipped with 7 LoRa (long-range radio) Internet of Things base stations to ensure low-power, long-distance data transmission network coverage; In addition, the Bluetooth beacon is battery-powered and can be used immediately after being attached. It is easy to install and avoids the wiring construction required for the modification of traditional operating room equipment. Therefore, this design requires very little modification of the existing facilities in the operating room, and during the installation of the beacon and the base station, there is no need to lay power or data lines, which will not interfere with the normal operation of the operating room.

[0052] In this embodiment S1.3, by moving at a stable and uniform speed in the positioning coverage area and collecting the Bluetooth beacon signal strength, signal strength fluctuations caused by speed changes or non-fixed paths can be avoided, ensuring that the signal strength data collected each time is accurate and reliable. Each record in the fingerprint library contains a location point and a corresponding Bluetooth beacon signal feature. By matching it with the real-time collected signal strength, the location of the device can be accurately determined. This matching method has high accuracy and can meet the needs of high-precision positioning scenarios such as operating rooms.

[0053] S1.4, continuously receiving Bluetooth signals within the range of several medical devices according to the built-in positioning receiver of the IoT device, and obtaining the RSS signal of the Bluetooth beacon; Use a simplified one-dimensional Kalman filter to smooth the RSS signal, and sort the processed RSS signals from strong to weak RSS. , and its corresponding Take it out, multiply and add the step-wise weights, get the highest score value and its floor index value, and then get the actual floor; Perform fingerprint similarity on the RPs of the actual floor to obtain a similarity set; take the position corresponding to the highest similarity in the similarity set as the current position of the device to obtain a location set of several medical devices.

[0054] The smoothing formula is: The highest score value and its floor index value are: The formula for fingerprint similarity is: In the smoothing processing formula, K is the gain coefficient in the one-dimensional Kalman filter, and the value is set between 0 and 1. The closer K is to 1, the more stable the signal is. In this embodiment, by setting the K value to 0.5, a balance can be achieved between stability and real-time performance. represents the RSS signal value after smoothing by the Kalman filter at time t-1, Indicates the RSS signal value actually measured at time t; Among the highest score values ​​and their floor index values, according to actual measurement experience, K=8 can obtain accurate floor judgment results; is the floor score array, i is the i-th index value sorted from RSS strong to weak; In the formula for fingerprint similarity, is the first strongest signal strength after smoothing, is the signal strength corresponding to the i-th strongest signal, Collect the first strongest signal strength for the jth group of fingerprints; Collect the strongest signal strength of the i-th group of fingerprints, and take the root mean square of the difference; traverse all the collection points on the floor where the user is located and calculate , The smaller the value, the higher the similarity. The corresponding position is used as the output result of fingerprint comparison, that is, .

[0055] In this embodiment S1.4, the RSS signal transmitted by the Bluetooth beacon is relatively stable, which helps to reduce signal interference and errors; by continuously receiving Bluetooth signals and performing smoothing processing, the influence of signal fluctuations on positioning accuracy can be further reduced; In addition, the fingerprint comparison method is more stable than the traditional triangulation positioning, especially in complex indoor environments, with higher positioning accuracy.

[0056] S2. The status set and location set are transmitted to the central management server via long-distance radio or Bluetooth broadcast, and are associated with the patient's information to generate device usage records for several medical devices.

[0057] In the embodiment of the present application, step S2 includes S2.1 to S2.2, wherein S2.1 is a process of transmitting a state set and a location set to a central management server, and S2.2 is a process of performing data association to generate a device usage record, specifically: S2.1. According to the preset data transmission control strategy and confidentiality strategy, based on anti-interference technology, the state set and location set are transmitted to the central management server by controlling the radio signal to jump between several frequencies; or based on anti-congestion technology, the state set and location set are transmitted to the central management server by penetrating obstacles through Bluetooth broadcast reflection and other methods; After the state set and location set are transmitted to the central management server, the state set is compared with the preset threshold to determine the different electromagnetic energy ranges corresponding to the different states of each device (such as shutdown, standby, and operation), and the current state of the device is accurately determined to obtain a more accurate state set.

[0058] The specific data transmission control policies are as follows: The frequency of energy value transmission is determined based on the energy value changes detected twice before and after. When the difference in energy value changes exceeds 30%, transmission is triggered. Set the interval between each transmission to no less than 8 seconds.

[0059] The confidentiality policy is as follows: The data in the transmission process is encrypted using the AES-256 encryption algorithm. Only authorized medical personnel can access and manage the information associated with the device and the patient, and view, modify and analyze the data. All data has access control and logging functions to ensure the security and traceability of the system.

[0060] Among them, the anti-interference technology is: Anti-interference technology is established based on network layout and frequency band selection optimization technology, signal enhancement and interference suppression technology, and power regulation and optimization technology; among them, network layout and frequency band selection optimization technology is achieved by adjusting the base station layout and radio frequency band in the wireless communication technology network, signal enhancement and interference suppression technology is achieved by expanding the signal coverage range and controlling the signal frequency hopping, and power regulation and optimization technology is achieved by adjusting the radio transmission power. Specifically: ① Optimize the layout of LoRa base stations, which are suitable for complex buildings. Specifically: 1) Increase the number of LoRa base stations: Add more base stations in the corners of buildings, areas with thick walls or severe signal attenuation, and reduce the transmission distance to ensure that each area can receive a strong enough signal.

[0061] 2) Base station deployment based on environmental modeling: Use environmental scanning technology (such as 3D modeling or wireless radio frequency identification) to simulate the coverage of LoRa signals in the hospital in advance, and make reasonable layout of LoRa base stations based on factors such as building structure and wall material to minimize signal dead spots and attenuation.

[0062] ②Choose the appropriate LoRa frequency band, which is suitable for multi-story or multi-room hospital environments, specifically: Different LoRa frequency bands have different penetration capabilities. Low-frequency bands (such as 490MHz) signals perform better in penetrating walls and obstacles. Choosing a suitable frequency band can effectively reduce signal attenuation.

[0063] ③Use signal repeaters, which are suitable for areas that cannot be directly covered by base stations, specifically: LoRa signal repeaters are deployed in the target area to relay signals and expand coverage to ensure smooth signal transmission.

[0064] ④ The interference suppression technology is used to avoid electromagnetic interference that may be generated by various medical equipment in the hospital during operation. Specifically: 1) Use frequency hopping technology (Frequency Hopping Spread Spectrum, referred to as FHSS): FHSS enables LoRa signals to jump between multiple frequencies, reducing the possibility of interference in a single frequency band, thereby improving the signal's anti-interference ability.

[0065] 2) Shielding materials: Use electromagnetic shielding materials around the interference source to reduce interference, and perform appropriate shielding at the LoRa receiver and transmitter to enhance anti-interference capabilities.

[0066] ⑤ Power regulation is used to reduce signal reflection and multipath effects, specifically: In areas with shorter transmission distances, the LoRa transmission power can be appropriately reduced to reduce signal reflection and multipath effects (signals bounce and refract in complex environments, resulting in unstable received signals); in long-distance areas, the transmission power can be increased to enhance coverage.

[0067] Among them, the anti-congestion technologies are: ① Channel switching and load balancing are used to avoid channel congestion caused by multiple Bluetooth devices working at the same time. Specifically: The Bluetooth Adaptive Frequency Hopping (AFH) technology is used to dynamically adjust the channel usage of Bluetooth devices.

[0068] ②Increasing the density of Bluetooth gateways is suitable for avoiding signal loss or interference caused by long distance or signal blocking. Specifically: In areas with channel congestion and severe Bluetooth signal attenuation, especially in places where equipment is concentrated, such as operating rooms, the number and density of Bluetooth gateways can be increased to shorten the transmission distance between Bluetooth devices and gateways.

[0069] ③ Avoid body obstruction and device positioning, which is suitable for reducing the impact of medical staff's body obstruction on Bluetooth signal transmission, specifically: 1) Multipath reflection: Using the multipath characteristics of Bluetooth signals, Bluetooth devices can penetrate obstacles by reflection. Therefore, Bluetooth devices can be installed in places such as ceilings or corners to avoid direct blocking of signal transmission by the body.

[0070] 2) Multi-device redundant deployment: Install multiple Bluetooth devices or gateways in key areas to ensure that even if the signal of a certain device is blocked, other devices can still work normally, thereby improving the stability of signal transmission.

[0071] ④ Adjust the Bluetooth transmission power, which is suitable for scenarios where obstacles need to be penetrated or the signal is blocked. Specifically: Appropriately increase the transmission power of the Bluetooth device to enhance the signal's penetration ability. In addition, you can also adjust the antenna angle to optimize the signal coverage.

[0072] It should be noted that if a more accurate time determination of the device status change is required, real-time performance can be improved by increasing the frequency of data transmission. For example, shortening the time interval between each data transmission to 2-3 seconds can significantly improve the system's response speed and provide more accurate device status determination; In addition, LoRa technology has the advantages of low power consumption and long-distance transmission, and is suitable for large-area coverage scenarios such as operating rooms; LoRa in the 490MHz frequency band can ensure large-area coverage in a single-story hospital, and only a small number of base stations are required to complete the deployment. For operating room scenarios where WiFi / Bluetooth networks have been deployed, data can be transmitted to devices such as Bluetooth gateways through Bluetooth broadcasting, achieving more flexible equipment status monitoring and data transmission.

[0073] In this embodiment S2.1, by controlling the radio signal to jump between several frequencies, signal interference can be effectively avoided, ensuring the stability and reliability of data transmission. By using the Bluetooth broadcast reflection method to penetrate obstacles, the continuity of data transmission can be maintained in the case of channel congestion, ensuring the real-time update of the device status set and location set; In addition, by adjusting the base station layout in the wireless communication technology network, the signal transmission path can be optimized, signal attenuation and interference can be reduced; selecting the appropriate radio frequency band can reduce frequency band congestion and interference, and improve the efficiency and accuracy of signal transmission. Reducing interference by controlling signal frequency hopping helps to ensure the clarity and accuracy of the signal during transmission and improve the performance of the communication system. Technologies such as network layout, frequency band selection and signal enhancement in anti-interference technology can be flexibly adjusted according to actual environmental requirements, so that the communication system can better adapt to the needs of different environments and scenarios, and improve the flexibility and scalability of the system. High-frequency filtering processing and transmission mechanisms not only ensure the accuracy of monitoring, but also strike a balance between battery consumption and system response; In addition, in a medical surgical environment, electromagnetic interference may occur when multiple devices are running at the same time. Anti-interference technology and anti-congestion technology can solve the problem of interference between multiple surgical devices during data transmission, ensuring that the status data and location data of multiple surgical devices can be accurately transmitted.

[0074] S2.2, based on the association module, determining the usage time periods occupied by several medical devices during actual use according to the state set and the location set; Obtain the surgical time period from when the patient enters the operating room and begins surgery to when the patient leaves the operating room after surgery; By comparing the usage time period and the surgery time period, the device set actually used by the patient during the surgery is obtained, and the information of the device set is used as the actual usage information of the device.

[0075] Before the patient's surgery begins, check whether the quantity of surgical instruments and drugs meets the preset value according to the type of surgery, and check whether the surgical instruments meet the preset safety standards to obtain the safety inspection results; By evaluating whether the medical staff followed the preset surgical procedures during the operation, the surgical operation compliance inspection results were obtained; Conduct a satisfaction survey on patients after surgery and obtain the satisfaction survey results; The comprehensive information is composed of safety inspection results, surgical procedure compliance inspection results and satisfaction survey results.

[0076] The actual use information of the equipment is associated with the patient information in the surgical management system to obtain a detailed record of the use of the equipment, and the comprehensive information and the surgical record generated at the beginning of the surgery are added to the record of the use of the equipment; The equipment usage records are stored in the central database through the data storage module.

[0077] In this embodiment S2.2, by accurately recording the use time period of the medical device and the patient's surgery time period, accurate tracking of the device usage can be achieved, thereby avoiding device usage disputes caused by time ambiguity or inaccurate records in traditional methods; In addition, by checking whether the number of surgical instruments and drugs meets the preset values ​​before the operation, it can be ensured that the operation will not be interrupted or delayed due to the lack of necessary instruments or drugs, thereby improving the safety of the operation; at the same time, checking whether the surgical instruments meet the preset safety standards can effectively avoid the use of defective or unqualified instruments for surgery, further reducing the risk of surgery. By evaluating whether the medical staff strictly follow the preset surgical operating procedures during the operation, it can be ensured that every step of the operation meets medical standards and regulations, thereby improving the success rate of the operation and the patient's recovery effect. This full-cycle detection and recording method is conducive to ensuring the smooth progress of the operation and ensuring the traceability of the data; In addition, for the overall response time of the system, from the change of the device status to the final determination of the device status by the system, the entire process includes: seamless and continuous detection of the sensing part, filtering delay within 1 second of the signal processing part, millisecond delay of the network transmission part, and device status determination on the server side. Therefore, the time difference between the actual status of the device and the status displayed by the system is mainly concentrated in the signal processing link, usually 1 second to 10 seconds, depending on the frequency of changes in the device operating status and transmission conditions. In the operating room scenario, the status information of surgical equipment is usually used for recording and subsequent analysis, and the overall surgical process usually lasts 1 hour or more; therefore, the device status determination error within 10 seconds is completely within the acceptable range for the entire surgical process, which can solve the problem of inaccurate time synchronization caused by various reasons (such as network delays, equipment failures, etc.), and ensure the accuracy of timestamp matching.

[0078] Overall, this embodiment has the following beneficial effects: This application can monitor the working status and position changes of the equipment in real time by sensing the difference in low-frequency electromagnetic energy generated by the equipment in different working states. This non-invasive sensing method avoids errors and failures caused by improper sensor installation or contact problems, and can improve the accuracy of the data. The use of long-distance radio or Bluetooth broadcast technology to transmit the device status set and location set to the central management server in real time can avoid the inconvenience and limitations caused by wired connections, and also improve the efficiency and flexibility of data transmission. The status set and location set transmitted to the central management server are associated with the patient's information to generate a record of equipment use. This automated processing method not only reduces the tediousness and errors of manual operations, but also improves the efficiency and accuracy of data processing; In summary, this application provides an efficient and accurate method for automatically associating operating room equipment with patients by integrating non-invasive device status perception technology, the Internet of Things positioning system and the surgical management system, significantly improving the efficiency and accuracy of surgical equipment throughout the entire surgical cycle, and providing strong technical support for the automated management and optimized scheduling of medical equipment.

[0079] Embodiment 2: Please refer to FIG2 , an embodiment of the present application provides an automatic association device between operating room equipment and patients, including a data module 10 and an association module 20; The data module 10 is used to sense the difference in low-frequency electromagnetic energy generated by the equipment in different working states in a non-invasive manner, and obtain a state set and a position set of several medical equipment during the patient's surgery; The association module 20 is used to transmit the state set and the location set to the central management server via long-distance radio or Bluetooth broadcasting, and associate them with the patient's information to generate device usage records of several medical devices.

[0080] In one embodiment, the data module 10 includes a pre-processing unit, an energy sub-unit, a conditioning sub-unit and a mapping sub-unit, a fingerprint library unit, a signal sub-unit and a position sub-unit; Among them, the preprocessing unit is the process of data preprocessing, the energy subunit, the conditioning subunit and the mapping subunit are the processes of generating the state set of the medical device, the fingerprint library unit is the process of establishing the fingerprint library, and the signal subunit and the position subunit are the processes of generating the position set of the medical device, specifically: The pre-treatment unit is used to record the patient's operation time, operating room number, operation type and detailed information of medical staff through the operation management system; The pre-processing unit is also used to control the surgical management system to generate a surgical record based on detailed information such as equipment information and personnel information of the surgery when the patient's surgery begins, and lock the resource information related to several medical equipment in the operating room within a preset specific time period, including the operating room number, the start and end time of the surgery, and surgical instruments, etc.; wherein the end time includes the preset end time and the actual end time; wherein several medical equipment is determined based on the specific type of surgery to be performed on the patient, the actual needs of the surgery, and the monitoring and support equipment that may be needed during the operation.

[0081] The preset end time is determined as follows: ① Historical data: The surgical management system analyzes historical data of similar surgical types, combines the complexity of the surgery, the patient's physical condition and the experience of the surgeon, and derives the preset end time of the surgery; among them, historical data includes the average duration and standard deviation of similar types of surgeries.

[0082] ②Experience of the doctor and surgical team: Through feedback interaction with the surgeon and other surgical team members, the estimated duration is further adjusted based on their subjective assessment of the complexity of the surgery. For example, in some cases, the doctor may inform the surgeon of the special complexity of the surgery in advance, and the preset end time will be extended accordingly.

[0083] ③ Equipment usage: The preset end time of the operation is further determined based on the usage data of medical equipment during the operation. For example, if key equipment (such as anesthesia machines, surgical lights, etc.) is used for a long time, it can prompt the system that the operation may exceed expectations, and an alarm will be issued to remind the surgical team to pay attention to potential problems in the progress of the operation.

[0084] Among them, the locking and adjustment methods of the actual end time are as follows: ①Entering the end time of the operation: When the operation actually ends, the circulating nurse or other personnel will manually enter the end time in the operation management system.

[0085] ② Data locking and adjustment: The final data of the operation is locked according to the actual end time, including the operation duration, equipment usage time and personnel participation time. If there is a large difference between the actual operation duration and the estimated duration, the corresponding adjustment and optimization will be automatically performed to update the estimated duration of similar operations in the future to improve the accuracy of the operation duration prediction.

[0086] ③ Integration with the Internet of Things system: Determine the actual end time of the surgery by tracking the status and location of the equipment in real time. For example, if some equipment is in use for a long time and the surgery is not over, the system can predict the possibility of surgery delay based on such data and update the actual end time in real time.

[0087] It should be noted that the system architecture in the present application includes an Internet of Things sensing device, a surgical management system, an equipment positioning and efficiency system, a central management server, and a data storage module.

[0088] The energy subunit is used to continuously detect the low-frequency electromagnetic wave energy of several medical devices based on the device positioning and efficiency system through the inductive sensor of the non-invasive device in the IoT sensing device and the nanowatt-level operational amplifier, and obtain the real-time low-frequency electromagnetic wave energy radiated by the relevant devices generated by several medical devices in different working states; wherein, the non-invasive device is based on the principle of electromagnetic induction and is established according to the inductive sensor and the signal processing module; A conditioning subunit, used for performing high-frequency filtering processing on real-time low-frequency electromagnetic wave energy through a signal processing module of a non-intrusive device to obtain an electromagnetic energy value set; The mapping subunit is used to determine the device usage status corresponding to the electromagnetic energy value set based on the electromagnetic characteristics of the device and the mapping relationship between the electromagnetic energy value and the device status, and obtain the status set of several medical devices during the patient's surgery.

[0089] The energy subunit, conditioning subunit, and mapping subunit of this embodiment sense the difference in low-frequency electromagnetic energy generated by the device under different working conditions in a non-invasive manner, and can monitor the status and location information of the medical device in real time, which helps to detect abnormal conditions of the device in a timely manner and avoid safety hazards during the operation; and the non-invasive sensing method will not cause any interference to the normal operation of the equipment, ensuring the continuity and stability of the operation; this method does not require connecting to the device port or interacting with the device control system for data, and the sensing device can accurately identify the three states of the device: shutdown, standby, and operation. Therefore, this non-invasive sensing method not only avoids the problem of device port occupancy, but also greatly reduces the cost and installation complexity of sensing the operating status of the device. By obtaining the location set of the medical device during the operation, accurate tracking and management of the equipment can be achieved; In addition, the inductive sensor has high sensitivity and can sense tiny changes in physical quantities and convert them into electrical signal output, which enables the system to accurately obtain the low-frequency electromagnetic wave energy of medical equipment. Because medical equipment in different states will radiate electromagnetic waves of different intensities and frequencies, it is more accurate and reliable to determine the state of the medical equipment based on its electromagnetic characteristics.

[0090] A fingerprint library unit, used to determine the location coverage area where the surgery is located based on the Bluetooth beacon; The fingerprint library unit is also used to hold a mobile phone or other device and move forward along a preset marked straight line at a stable and uniform speed within the positioning coverage area, so that the Bluetooth beacon signal strength is recorded and evenly distributed on the collection line segment, and a Bluetooth beacon signal strength set corresponding to several single collection paths within the positioning coverage area is obtained; The fingerprint library unit is also used to store the Bluetooth beacon signal strength set according to the location points and signal characteristics to obtain a fingerprint library (radio map); The fingerprint library unit is also used to generate a floor score array based on the fingerprint library Specifically, after the data is collected, a floor score correspondence table is generated by traversing the RPs (receiving points) of each floor and receiving The strongest RSS signal (received signal strength) is recorded and obtained The floor score array ;in, Refers to a specific Bluetooth device, Bluetooth tag, Bluetooth beacon, or any other entity that can emit Bluetooth signals and be received by RPs.

[0091] Among them, the floor score array can be expressed as: in, represents the transpose operation, and Received when collecting on the first floor The strongest RSS and second floor collection received The strongest RSS, For the Received during floor collection The strongest RSS, in dBm. The signal is calculated as -100. The highest score will be obtained on the paved floor, but if the Bluetooth beacon is deployed close to the hollow area, the score of the upper or lower floor may be close to that of the paved floor.

[0092] Among them, the equipment positioning and efficiency system relies on the Internet of Things technology, and it is necessary to build a basic positioning network and data transmission network in the operating room. For example, in a layout diagram containing 30 operating rooms, 150 Bluetooth beacons can be deployed (an average of 2 per operating room) to provide equipment positioning functions at the operating room level. At the same time, it is equipped with 7 LoRa (long-range radio) Internet of Things base stations to ensure low-power, long-distance data transmission network coverage; In addition, the Bluetooth beacon is battery-powered and can be used immediately after being attached. It is easy to install and avoids the wiring construction required for the modification of traditional operating room equipment. Therefore, this design requires very little modification of the existing facilities in the operating room, and during the installation of the beacon and the base station, there is no need to lay power or data lines, which will not interfere with the normal operation of the operating room.

[0093] The fingerprint library unit of this embodiment avoids signal strength fluctuations caused by speed changes or unstable paths by moving forward at a stable and uniform speed in the positioning coverage area and collecting Bluetooth beacon signal strengths, ensuring that the signal strength data collected each time is accurate and reliable. Each record in the fingerprint library contains a location point and a corresponding Bluetooth beacon signal feature. By matching it with the real-time collected signal strength, the location of the device can be accurately determined. This matching method has high accuracy and can meet the needs of high-precision positioning scenarios such as operating rooms.

[0094] A signal subunit, used for continuously receiving Bluetooth signals within the range of a plurality of medical devices according to a positioning receiver built into the IoT device, and obtaining an RSS signal of the Bluetooth beacon; The position subunit is used to smooth the RSS signal using a simplified one-dimensional Kalman Filter and sort the processed RSS signals from strong to weak RSS. , and its corresponding Take it out, multiply and add the step-wise weights, get the highest score value and its floor index value, and then get the actual floor; The location subunit is also used to perform fingerprint similarity on the RPs of the actual floor to obtain a similarity set; the position corresponding to the highest similarity in the similarity set is used as the current position of the device to obtain a location set of several medical devices.

[0095] The smoothing formula is: The highest score value and its floor index value are: The formula for fingerprint similarity is: In the smoothing processing formula, K is the gain coefficient in the one-dimensional Kalman filter, and the value is set between 0 and 1. The closer K is to 1, the more stable the signal is. In this embodiment, by setting the K value to 0.5, a balance can be achieved between stability and real-time performance. represents the RSS signal value after smoothing by the Kalman filter at time t-1, Indicates the RSS signal value actually measured at time t; Among the highest score values ​​and their floor index values, according to actual measurement experience, K=8 can obtain accurate floor judgment results; is the floor score array, i is the i-th index value sorted from RSS strong to weak; In the formula for fingerprint similarity, is the first strongest signal strength after smoothing, is the signal strength corresponding to the i-th strongest signal, The first strongest signal strength collected for the jth group of fingerprints, Collect the strongest signal strength of the i-th group of fingerprints, and take the root mean square of the difference; traverse all the collection points on the floor where the user is located and calculate , The smaller the value, the higher the similarity. The corresponding position is used as the output result of fingerprint comparison, that is, .

[0096] In the signal subunit and the position subunit of this embodiment, the RSS signal transmitted by the Bluetooth beacon is relatively stable, which helps to reduce signal interference and errors; by continuously receiving the Bluetooth signal and performing smoothing processing, the influence of signal fluctuations on positioning accuracy can be further reduced; In addition, the fingerprint comparison method is more stable than the traditional triangulation positioning, especially in complex indoor environments, with higher positioning accuracy.

[0097] In one embodiment, the association module 20 includes a transmission unit, an occupation subunit, a use subunit, a comparison subunit, a first inspection unit, a second inspection unit, an investigation unit, a synthesis unit and a recording unit; wherein the transmission unit is a process of transmitting the state set and the location set to the central management server, and the occupation subunit, the use subunit, the comparison subunit, the first inspection unit, the second inspection unit, the investigation unit, the synthesis unit and the recording unit are processes of performing data association to generate a device use record, specifically: A transmission unit is used to transmit the state set and the position set to the central management server in accordance with the preset data transmission control strategy and confidentiality strategy by controlling the radio signal to jump between several frequencies based on anti-interference technology; or to transmit the state set and the position set to the central management server by penetrating obstacles through Bluetooth broadcast reflection and other methods based on anti-congestion technology; The transmission unit is also used to compare the state set with the preset threshold after the state set and the position set are transmitted to the central management server, and the different electromagnetic energy ranges corresponding to the different states of each device (such as shutdown, standby, and operation) are accurately determined to obtain a more accurate state set.

[0098] The specific data transmission control policies are as follows: The frequency of energy value transmission is determined based on the energy value changes detected twice before and after. When the difference in energy value changes exceeds 30%, transmission is triggered. Set the interval between each transmission to no less than 8 seconds.

[0099] The confidentiality policy is as follows: The data in the transmission process is encrypted using the AES-256 encryption algorithm. Only authorized medical personnel can access and manage the information associated with the device and the patient, and view, modify and analyze the data. All data has access control and logging functions to ensure the security and traceability of the system.

[0100] Among them, the anti-interference technology is: Anti-interference technology is established based on network layout and frequency band selection optimization technology, signal enhancement and interference suppression technology, and power regulation and optimization technology; among them, network layout and frequency band selection optimization technology is achieved by adjusting the base station layout and radio frequency band in the wireless communication technology network, signal enhancement and interference suppression technology is achieved by expanding the signal coverage range and controlling the signal frequency hopping, and power regulation and optimization technology is achieved by adjusting the radio transmission power. Specifically: ① Optimize the layout of LoRa base stations, which are suitable for complex buildings. Specifically: 1) Increase the number of LoRa base stations: Add more base stations in the corners of buildings, areas with thick walls or severe signal attenuation, and reduce the transmission distance to ensure that each area can receive a strong enough signal.

[0101] 2) Base station deployment based on environmental modeling: Use environmental scanning technology (such as 3D modeling or wireless radio frequency identification) to simulate the coverage of LoRa signals in the hospital in advance, and make reasonable layout of LoRa base stations based on factors such as building structure and wall material to minimize signal dead spots and attenuation.

[0102] ②Choose the appropriate LoRa frequency band, which is suitable for multi-story or multi-room hospital environments, specifically: Different LoRa frequency bands have different penetration capabilities. Low-frequency bands (such as 490MHz) signals perform better in penetrating walls and obstacles. Choosing a suitable frequency band can effectively reduce signal attenuation.

[0103] ③Use signal repeaters, which are suitable for areas that cannot be directly covered by base stations, specifically: LoRa signal repeaters are deployed in the target area to relay signals and expand coverage to ensure smooth signal transmission.

[0104] ④ The interference suppression technology is used to avoid electromagnetic interference that may be generated by various medical equipment in the hospital during operation. Specifically: 1) Use frequency hopping technology (Frequency Hopping Spread Spectrum, referred to as FHSS): FHSS enables LoRa signals to jump between multiple frequencies, reducing the possibility of interference in a single frequency band, thereby improving the signal's anti-interference ability.

[0105] 2) Shielding materials: Use electromagnetic shielding materials around the interference source to reduce interference, and perform appropriate shielding at the LoRa receiver and transmitter to enhance anti-interference capabilities.

[0106] ⑤ Power regulation is used to reduce signal reflection and multipath effects, specifically: In areas with shorter transmission distances, the LoRa transmission power can be appropriately reduced to reduce signal reflection and multipath effects (signals bounce and refract in complex environments, resulting in unstable received signals); in long-distance areas, the transmission power can be increased to enhance coverage.

[0107] Among them, the anti-congestion technologies are: ① Channel switching and load balancing are used to avoid channel congestion caused by multiple Bluetooth devices working at the same time. Specifically: The Bluetooth Adaptive Frequency Hopping (AFH) technology is used to dynamically adjust the channel usage of Bluetooth devices.

[0108] ②Increasing the density of Bluetooth gateways is suitable for avoiding signal loss or interference caused by long distance or signal blocking. Specifically: In areas with channel congestion and severe Bluetooth signal attenuation, especially in places where equipment is concentrated, such as operating rooms, the number and density of Bluetooth gateways can be increased to shorten the transmission distance between Bluetooth devices and gateways.

[0109] ③ Avoid body obstruction and device positioning, which is suitable for reducing the impact of medical staff's body obstruction on Bluetooth signal transmission, specifically: 1) Multipath reflection: Using the multipath characteristics of Bluetooth signals, Bluetooth devices can penetrate obstacles by reflection. Therefore, Bluetooth devices can be installed in places such as ceilings or corners to avoid direct blocking of signal transmission by the body.

[0110] 2) Multi-device redundant deployment: Install multiple Bluetooth devices or gateways in key areas to ensure that even if the signal of a certain device is blocked, other devices can still work normally, thereby improving the stability of signal transmission.

[0111] ④ Adjust the Bluetooth transmission power, which is suitable for scenarios where obstacles need to be penetrated or the signal is blocked. Specifically: Appropriately increase the transmission power of the Bluetooth device to enhance the signal's penetration ability. In addition, you can also adjust the antenna angle to optimize the signal coverage.

[0112] It should be noted that if a more accurate time determination of the device status change is required, real-time performance can be improved by increasing the frequency of data transmission. For example, shortening the time interval between each data transmission to 2-3 seconds can significantly improve the system's response speed and provide more accurate device status determination; In addition, LoRa technology has the advantages of low power consumption and long-distance transmission, and is suitable for large-area coverage scenarios such as operating rooms; LoRa in the 490MHz frequency band can ensure large-area coverage in a single-story hospital, and only a small number of base stations are required to complete the deployment. For operating room scenarios where WiFi / Bluetooth networks have been deployed, data can be transmitted to devices such as Bluetooth gateways through Bluetooth broadcasting, achieving more flexible equipment status monitoring and data transmission.

[0113] The transmission unit of this embodiment can effectively avoid signal interference and ensure the stability and reliability of data transmission by controlling the radio signal to jump between several frequencies. By using the Bluetooth broadcast reflection method to penetrate obstacles, the continuity of data transmission can be maintained in the case of channel congestion, ensuring the real-time update of the device status set and location set; In addition, by adjusting the base station layout in the wireless communication technology network, the signal transmission path can be optimized, signal attenuation and interference can be reduced; selecting the appropriate radio frequency band can reduce frequency band congestion and interference, and improve the efficiency and accuracy of signal transmission. Reducing interference by controlling signal frequency hopping helps to ensure the clarity and accuracy of the signal during transmission and improve the performance of the communication system. Technologies such as network layout, frequency band selection and signal enhancement in anti-interference technology can be flexibly adjusted according to actual environmental requirements, so that the communication system can better adapt to the needs of different environments and scenarios, and improve the flexibility and scalability of the system. High-frequency filtering processing and transmission mechanisms not only ensure the accuracy of monitoring, but also strike a balance between battery consumption and system response; In addition, in a medical surgical environment, electromagnetic interference may occur when multiple devices are running at the same time. Anti-interference technology and anti-congestion technology can solve the problem of interference between multiple surgical devices during data transmission, ensuring that the status data and location data of multiple surgical devices can be accurately transmitted.

[0114] An occupation subunit, for determining, based on the association module and according to the state set and the position set, the usage time periods occupied by the plurality of medical devices during actual usage; The use subunit is used to obtain the operation time period from when the patient enters the operating room and starts the operation to when the patient leaves the operating room after the operation; The comparison subunit is used to obtain the equipment set actually used by the patient during the operation by comparing the use time period and the operation time period, and use the information of the equipment set as the actual use information of the equipment.

[0115] The first inspection unit is used to check whether the quantity of surgical instruments and drugs meets the preset value according to the type of surgery before the operation of the patient begins, and to check whether the surgical instruments meet the preset safety standards to obtain the safety inspection result; The second inspection unit is used to obtain the surgical operation compliance inspection result by evaluating whether the medical staff complies with the preset surgical operation procedures during the operation; The survey unit is used to conduct a satisfaction survey on patients after surgery and obtain the satisfaction survey results; The comprehensive unit is used to form comprehensive information composed of safety inspection results, surgical operation compliance inspection results and satisfaction survey results.

[0116] A recording unit, used to associate the actual use information of the equipment with the patient information in the surgery management system to obtain a detailed record of the use of the equipment, and to add the comprehensive information and the surgery record generated at the beginning of the surgery to the record of the use of the equipment; The recording unit is also used to store the equipment usage record in the central database through the data storage module.

[0117] In this embodiment, the occupancy subunit, the use subunit, the comparison subunit, the first inspection unit, the second inspection unit, the investigation unit, the comprehensive unit and the recording unit can accurately track the use of the equipment by accurately recording the use time period of the medical equipment and the operation time period of the patient, thereby avoiding equipment use disputes caused by time ambiguity or inaccurate records in traditional methods; In addition, by checking whether the number of surgical instruments and drugs meets the preset values ​​before the operation, it can be ensured that the operation will not be interrupted or delayed due to the lack of necessary instruments or drugs, thereby improving the safety of the operation; at the same time, checking whether the surgical instruments meet the preset safety standards can effectively avoid the use of defective or unqualified instruments for surgery, further reducing the risk of surgery. By evaluating whether the medical staff strictly follow the preset surgical operating procedures during the operation, it can be ensured that every step of the operation meets medical standards and regulations, thereby improving the success rate of the operation and the patient's recovery effect. This full-cycle detection and recording method is conducive to ensuring the smooth progress of the operation and ensuring the traceability of the data; In addition, for the overall response time of the system, from the change of the device status to the final determination of the device status by the system, the entire process includes: seamless and continuous detection of the sensing part, filtering delay within 1 second of the signal processing part, millisecond delay of the network transmission part, and device status determination on the server side. Therefore, the time difference between the actual status of the device and the status displayed by the system is mainly concentrated in the signal processing link, usually 1 second to 10 seconds, depending on the frequency of changes in the device operating status and transmission conditions. In the operating room scenario, the status information of surgical equipment is usually used for recording and subsequent analysis, and the overall surgical process usually lasts 1 hour or more; therefore, the device status determination error within 10 seconds is completely within the acceptable range for the entire surgical process, which can solve the problem of inaccurate time synchronization caused by various reasons (such as network delays, equipment failures, etc.), and ensure the accuracy of timestamp matching.

[0118] Overall, this embodiment has the following beneficial effects: This application can monitor the working status and position changes of the equipment in real time by sensing the difference in low-frequency electromagnetic energy generated by the equipment in different working states. This non-invasive sensing method avoids errors and failures caused by improper sensor installation or contact problems, and can improve the accuracy of the data. The use of long-distance radio or Bluetooth broadcast technology to transmit the device status set and location set to the central management server in real time can avoid the inconvenience and limitations caused by wired connections, and also improve the efficiency and flexibility of data transmission. The status set and location set transmitted to the central management server are associated with the patient's information to generate a record of equipment use. This automated processing method not only reduces the tediousness and errors of manual operations, but also improves the efficiency and accuracy of data processing; In summary, this application provides an efficient and accurate method for automatically associating operating room equipment with patients by integrating non-invasive device status perception technology, the Internet of Things positioning system and the surgical management system, significantly improving the efficiency and accuracy of surgical equipment throughout the entire surgical cycle, and providing strong technical support for the automated management and optimized scheduling of medical equipment.

[0119] Embodiment three: An embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium including a stored computer program, wherein when the computer program is executed, the device where the computer-readable storage medium is located is controlled to execute the method for automatically associating operating room equipment with patients; Wherein, the method for automatically associating operating room equipment with patients, if implemented in the form of a software functional unit and used as an independent product, can be stored in a computer-readable storage medium. Based on such an understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Wherein, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form, etc. The computer-readable medium can include: any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0120] The above are preferred embodiments of the present invention. It should be noted that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A method for automatically associating operating room equipment with patients, characterized in that: include: By non-invasively sensing the difference in low-frequency electromagnetic energy generated by the device under different working states, a state set and a position set of several medical devices during the patient's surgery are obtained; wherein the several medical devices are determined according to the specific type of surgery to be performed on the patient and the actual needs of the surgery; The status set and location set are transmitted to a central management server via long-distance radio or Bluetooth broadcasting, and are associated with the patient's information to generate device usage records for the plurality of medical devices.

2. A method for automatically associating operating room equipment with patients as claimed in claim 1, characterized in that: By non-invasively sensing the difference in low-frequency electromagnetic energy generated by the equipment in different working states, the state sets and position sets of several medical devices during the patient's surgery are obtained, specifically: When the operation of the patient begins, generating an operation record according to the equipment information and personnel information of the operation, and locking the plurality of medical devices; Sensing the difference of low-frequency electromagnetic energy generated by the plurality of medical devices in different working states in a non-invasive manner, and obtaining the state set of the plurality of medical devices during the patient surgery; The floor and location of the operation are calculated according to the signal strength received by the Bluetooth beacon, and the location set of the medical devices during the patient's operation is obtained.

3. A method for automatically associating operating room equipment with patients as claimed in claim 2, characterized in that: The state set of the medical devices during the operation on the patient is obtained by sensing the difference in low-frequency electromagnetic energy generated by the medical devices in different working states in a non-invasive manner, specifically: Acquiring the real-time low-frequency electromagnetic wave energy radiated by the medical devices through the inductive sensor of the non-invasive device; wherein the non-invasive device is based on the principle of electromagnetic induction and is established according to the inductive sensor and the signal processing module; Performing signal conditioning on the real-time low-frequency electromagnetic wave energy through a signal processing module of the non-invasive device to obtain an electromagnetic energy value set; Based on the electromagnetic characteristics of the equipment, the equipment usage status corresponding to the electromagnetic energy value set is determined according to the mapping relationship between the electromagnetic energy value and the equipment status, so as to obtain the status set of the several medical devices during the patient surgery.

4. A method for automatically associating operating room equipment with patients as claimed in claim 2, characterized in that: The floor and location of the surgery are calculated according to the signal strength received by the Bluetooth beacon, and the location set of the medical devices during the patient's surgery is obtained, specifically: Continuously receiving Bluetooth signals within the range of the plurality of medical devices according to the positioning receiver, and obtaining RSS signals of Bluetooth beacons; The RSS signal is smoothed, and the processed RSS signal is compared with a preset fingerprint library to obtain the position set of several medical devices corresponding to the collection point with the highest similarity.

5. A method for automatically associating operating room equipment with patients as claimed in claim 4, characterized in that: The fingerprint library is specifically: Determine the location coverage area where the surgery is located based on Bluetooth beacons; In the positioning coverage area, move along a preset marked straight line at a stable and uniform speed to obtain a set of Bluetooth beacon signal strengths corresponding to a number of single collection paths; The Bluetooth beacon signal strength set is stored according to the location points and signal characteristics to obtain the fingerprint library.

6. The method for automatically associating operating room equipment with patients as claimed in claim 1, characterized in that: The state set and location set are transmitted to a central management server via long-distance radio or Bluetooth broadcasting, and are associated with the patient's information to generate device usage records of the plurality of medical devices, specifically: Based on the preset anti-interference technology, the state set and the position set are transmitted to the central management server by controlling the radio signal to jump between several frequencies; or based on the preset anti-congestion technology, the state set and the position set are transmitted to the central management server by penetrating obstacles by way of Bluetooth broadcast reflection; In the central management server, based on the state set and the location set, the equipment actually used during the patient's surgery is determined by a timestamp matching rule to obtain the actual use information of the equipment; The actual use information of the device is associated with the information of the patient to obtain the use record of the device.

7. A method for automatically associating operating room equipment with patients as claimed in claim 6, characterized in that: In the central management server, based on the state set and the location set, the device actually used during the patient's surgery is determined by a timestamp matching rule to obtain the actual use information of the device, specifically: In the central management server, determining the usage time periods occupied by the plurality of medical devices during actual use according to the state set and the location set; Obtaining the surgical time period from when the patient enters the operating room and begins surgery to when the patient leaves the operating room after surgery; By comparing the usage time period with the operation time period, the equipment set actually used by the patient during the operation is obtained, and the information of the equipment set is used as the actual equipment usage information.

8. A method for automatically associating operating room equipment with patients as claimed in claim 6, characterized in that: The anti-interference technology is specifically: Establish the anti-interference technology based on network layout and frequency band selection optimization technology, signal enhancement and interference suppression technology, and power regulation and optimization technology; Among them, the network layout and frequency band selection optimization technology is achieved by adjusting the base station layout and radio frequency band in the wireless communication technology network, the signal enhancement and interference suppression technology is achieved by expanding the signal coverage range and controlling the signal frequency hopping, and the power regulation and optimization technology is achieved by adjusting the radio transmission power.

9. The method for automatically associating operating room equipment with patients as claimed in claim 1, characterized in that: After generating the equipment usage records of the plurality of medical devices, the method further includes: Before the operation of the patient begins, check whether the quantity of surgical instruments and drugs meets the preset value according to the type of operation, and check whether the surgical instruments meet the preset safety standards to obtain the safety inspection results; By evaluating whether the medical staff followed the preset surgical procedures during the operation, the surgical operation compliance inspection results were obtained; The safety inspection result and the surgical operation compliance inspection result are added to the equipment usage record.

10. An automatic association device between operating room equipment and patients, characterized in that: Includes data module and association module; The data module is used to sense the difference in low-frequency electromagnetic energy generated by the device in different working states in a non-invasive manner, and obtain a state set and a position set of several medical devices during the patient's surgery; wherein the several medical devices are determined according to the specific type of surgery to be performed on the patient and the actual needs of the surgery; The association module is used to transmit the status set and location set to the central management server via long-distance radio or Bluetooth broadcasting, and associate them with the patient's information to generate device usage records of the multiple medical devices.

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