A bed exit detection alarm system and device

Abstract

The application relates to a bed leaving detection alarm system and device, which comprises a first detection unit for detecting the pressure of a patient on a bed body and a pressure point and generating a pressure signal; a second detection unit comprising a distance detection assembly for detecting the bed leaving distance of the patient and generating a distance signal and a physiological index detection assembly for monitoring the physiological state of the patient; and a processor for receiving the pressure signal generated by the first detection unit, the distance signal generated by the second detection unit and the physiological state signal of the patient, and analyzing and judging the pressure signal, the distance signal and the physiological state signal, and then generating an alarm instruction. The application automatically generates a detection program in accordance with the current behavior state of the patient based on the sharing of a historical medical record database of the patient, so that medical staff can take timely rescue measures when the patient appears in an unexpected or abnormal situation, thereby reducing the mortality of the patient.

Description

Technical Field

[0001] This invention relates to the field of medical auxiliary equipment technology, and to a detection system, particularly to an exit-from-bed detection alarm system and device. Background Technology

[0002] Currently, my country's work and services for the elderly still face the challenges of a continuously increasing elderly population and a deepening aging process. Furthermore, the health status of the elderly is not optimistic, with a significant number of disabled and semi-disabled elderly individuals. Especially for disabled or semi-disabled elderly people who cannot get out of bed, their families often struggle to provide constant care due to work commitments, and the cost of hiring caregivers is prohibitive for most families. In recent years, there have been numerous social problems stemming from the failure to promptly detect elderly individuals tripping, falling, or falling from bed, resulting in serious physical harm or even death. In addition, patients requiring absolute bed rest, such as those with tuberculosis complicated by hemoptysis, spinal fractures, or cerebral hemorrhage, may disregard or not fully comply with medical advice, altering their bed rest status or even getting out of bed on their own. Since family members, caregivers, nurses, or doctors cannot constantly monitor a patient's actual bed rest status, those required to remain in bed may fall, experience accidental falls, or suffer serious physical injuries due to other activities. If these injuries are not detected and addressed promptly, their lives will be endangered.

[0003] Many monitoring products have emerged on the market to monitor patient conditions, such as video surveillance to capture patient activity. However, video surveillance has extremely limited range and poor effectiveness. If a patient experiences a critical situation and is outside the video surveillance range, it can lead to delayed rescue and endanger the patient's life. For example, the utility model with publication number CN216352724U provides a patient leaving bed alarm device, which is installed on the side rail of the hospital bed. It collects the force information of the buttons in the railing adjustment mechanism through a button pressure detection module, and collects the rotation information of the side railing through a rotation detection module. The control module determines that the railing has been lowered based on the force and rotation information, and sends an alarm information to the nursing center through a communication module to notify medical staff to respond and handle the situation in a timely manner. This device can only monitor the patient's movement when getting out of bed. Patients, family members, or nursing staff may accidentally press the button and send false alarms. Medical staff will then rush to the corresponding bed upon receiving the alarm, wasting medical resources. The invention disclosed in CN107170198B is a bed-leaving detection alarm device, comprising: a control module, an information acquisition unit, a main node, and a network node. This device can detect the states of the person being monitored, including: lying down, sitting up, sitting on the edge of the bed, standing, suspected fall from bed, fall from bed, and leaving the bed. The invention detects several typical action states during the bed-leaving / returning process, which can be combined and detected by the node units. Extracting these characteristic action states helps determine the current physical condition of the person being monitored, effectively improving detection efficiency and accuracy. However, while this invention can monitor different states of the person being monitored, it cannot determine whether patients in different states are in danger, nor can it determine whether it is necessary to send an alarm to remind medical staff to check on the patient's condition at the corresponding bedside.

[0004] Different patient types have different requirements for getting out of bed or remaining in bed. Existing bed-getting devices or detection devices cannot determine whether to send an alarm or what level of alarm to send based on different patient types and corresponding bed-getting requirements. Furthermore, they often send false alarms. In existing technologies, behaviors deemed "unable to leave bed" are often targeted at patients who are completely bedridden. However, in actual wards, patients who are not bedridden may be unable to get up due to reasons such as paralysis or surgery. Many other patients are physically capable of leaving bed, but due to a lack of common sense, they choose to do so, violating medical advice. For example, a patient with a strong nicotine addiction might leave bed to smoke, or a patient, due to feelings of shame, might get out of bed to urinate when they don't have a catheter but need to urinate briefly. These violations of medical advice pose a significant threat to the patient's health. For instance, patients with pulmonary tuberculosis complicated by massive hemoptysis must maintain absolute bed rest in the early stages. However, some patients with this condition believe that short-term activity will not have a significant impact on their health and will get out of bed to urinate. Medical staff cannot constantly monitor the patient's condition, and family members often lack common sense and fail to stop the patient. The process of squatting and standing up during urination can easily cause hemoptysis and pose a risk of suffocation.

[0005] Furthermore, on the one hand, there are differences in understanding among those skilled in the art; on the other hand, the applicant studied a large number of documents and patents when making this invention, but due to space limitations, not all details and contents were listed in detail. However, this does not mean that the present invention does not possess the features of these prior art. On the contrary, the present invention already possesses all the features of the prior art, and the applicant reserves the right to add relevant prior art to the background art. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an exit-from-bed detection alarm system and device. These patients, possessing independent behavioral awareness, have different physiological and disease states, such as patients with pulmonary tuberculosis complicated by hemoptysis, post-operative lower limb fracture patients, patients with gastrointestinal bleeding, and patients with acute cerebral hemorrhage, requiring different medical orders. This invention automatically generates a detection program that matches the patient's current behavioral state based on sharing with the patient's historical medical record database. This enables medical staff to take timely rescue measures in the event of unexpected or abnormal situations, thereby reducing patient mortality.

[0007] This invention provides a bed-leaving detection alarm system and device, comprising: a first detection unit for detecting the pressure and pressure points of a patient on the bed and generating a pressure signal, comprising pressure detection components distributed at multiple locations on the bed to detect the pressure values ​​at multiple contact points formed between the patient and the bed. According to a preferred embodiment, the pressure detection components can be a pressure sensor array. The pressure detection components can detect the pressure values ​​of the patient on various points on the bed, and the pressure sensor array is communicatively connected to a processor, transmitting the collected data to the processor. The system includes a second detection unit, comprising a distance detection component for detecting the patient's distance from the bed and generating a distance signal, and a physiological indicator detection component for monitoring the patient's physiological state. Preferably, the distance detection component can be an infrared detector. The infrared detector is used to detect the patient's distance from the bed. The infrared detector is communicatively connected to the processor to transmit the collected patient distance information from the bed to the processor. Preferably, the physiological indicator detection component can be a wearable device. The wearable device is communicatively connected to the processor to transmit the determined physiological indicator results to the processor.

[0008] The system includes a processor that receives pressure signals generated by the first detection unit, distance signals generated by the second detection unit, and patient physiological state signals. The processor analyzes and judges the pressure signals, distance signals, and physiological state signals to generate an alarm command. In response to changes in pressure values ​​provided by the first detection unit related to the complete detachment of the patient's limbs from the bed, and changes in the area of ​​the pressure detection component where the pressure value changes, the processor determines the patient's current posture. When the processor determines that the patient is in a state of detachment as prescribed by the doctor, the second detection unit activates to monitor the patient's physiological state and detachment distance. The processor then determines whether an alarm command needs to be generated based on the patient's physiological state and detachment distance.

[0009] According to a preferred embodiment, the processor includes:

[0010] An information input unit that communicates with the patient's medical record database is used to obtain the patient's medical record information and department information, thereby enabling the system to change the judgment program based on the patient's real-time medical record information.

[0011] The first judgment unit is used to receive the pressure signal generated by the first detection unit and determine whether the bed pressure is within a preset pressure range.

[0012] The second judgment unit is used to receive the distance signal and physiological state signal generated by the second detection unit and determine whether the distance from the bed and the physiological indicators are within a preset distance range;

[0013] The time setting unit is used to time the user's time out of bed and determine whether the time out of bed is within the preset time range;

[0014] The analysis unit is used to receive and analyze the judgment results of the first judgment unit, the second judgment unit and the time setting unit and generate an alarm command.

[0015] Preferably, the first judgment unit is provided with a first pressure preset range, a second pressure value and a first pressure reference point to determine whether the pressure signal generated by the first detection unit is within the preset pressure range, and thus determine whether the patient is in the lying position required by the doctor.

[0016] Preferably, the second judgment unit is provided with a first distance threshold, a second distance threshold and a third distance threshold to determine whether the distance signal generated by the second detection unit is within a preset distance range, thereby determining the patient's out-of-bed status.

[0017] Preferably, the time setting unit is provided with a first time threshold, a second time threshold and a third time threshold, used to determine whether the user's time out of bed is within a preset time range.

[0018] Preferably, the system includes an alarm unit for receiving alarm commands generated by the processor and generating corresponding alarms.

[0019] Preferably, the alarm unit has three alarm types: Level 1 alarm, Level 2 alarm, and Level 3 alarm, so that users can judge the degree of danger of the patient's condition based on the alarm type.

[0020] Preferably, the first pressure preset range is set to the pressure range of the user's own weight on the bed.

[0021] Preferably, the first pressure preset range is set to the pressure range on the bed body within 3 kg of the user's own weight.

[0022] Preferably, the second pressure value is set to the pressure value when the patient is not on the bed. The first pressure preset range and the second pressure value are used to determine whether the patient's body is on the bed. The first pressure reference point is set as various pressure points generated on the bed when the user is lying in bed according to the doctor's orders to determine the user's activity on the bed.

[0023] Preferably, the first distance threshold is set to the optimal distance from the bed allowed by the doctor's orders.

[0024] Preferably, the second distance threshold is set to the furthest distance from the bed allowed by the doctor's order.

[0025] Preferably, the third distance threshold is set to the farthest distance that the infrared detector can detect, in order to determine whether the user's distance from the bed is within a preset distance range.

[0026] Preferably, the first time threshold is set to half of the optimal time allowed by the doctor's order to leave the bed.

[0027] Preferably, the second time threshold is set to the optimal time value for getting out of bed allowed by the doctor's orders.

[0028] Preferably, the third time threshold is set as the upper limit of the time to leave the bed as prompted by the doctor's order, so as to determine whether the user's time to leave the bed is within the preset time range.

[0029] Preferably, the first detection unit is communicatively connected to the processor, so that the processor can receive the pressure signal generated by the first detection unit.

[0030] Preferably, the second detection unit is communicatively connected to the processor, so that the processor can receive distance signals and physiological state signals generated by the second detection unit.

[0031] Preferably, the alarm unit is communicatively connected to the processor, so that the alarm unit receives alarm commands generated by the processor and generates corresponding alarms.

[0032] The beneficial effects of this invention are as follows: The bed-leaving detection alarm system and device provided by this invention automatically generate a detection program that matches the patient's current behavioral state based on sharing with the patient's historical medical record database, thus meeting the patient's medical orders at different treatment stages. This invention obtains the pressure signal of the patient on the bed through a pressure detection component to analyze whether the patient's activities or lying posture on the bed violate the medical orders. When the medical orders are violated, the system provided by this invention can issue an alarm to remind the patient to return to the lying posture required by the medical orders, avoiding the situation where the patient's condition worsens due to incorrect posture. At the same time, this invention combines the distance information generated by the distance detection component and the physiological parameters generated by the physiological index detection component to generate an analysis program to determine whether the patient's current physical condition is normal and whether the patient can return to the bed on their own. If the patient cannot return to the bed on their own, the alarm unit issues an alarm to notify medical staff to help the patient return to the bed and promptly conduct a physical examination or emergency measures to reduce the probability of patient death. Attached Figure Description

[0033] Figure 1 This is a simplified schematic diagram of a bed body according to a preferred embodiment of the present invention;

[0034] Figure 2This is a simplified schematic diagram of the module connection relationship of a preferred embodiment of the bed exit detection and alarm system provided by the present invention.

[0035] List of reference numerals

[0036] 1: Pressure detection component; 2: Distance detection component; 3: Physiological indicator detection component; 4: Processor; 41: Information input unit; 42: First judgment unit; 43: Second judgment unit; 44: Time setting unit; 45: Analysis unit; 5: Central control system; 6: Alarm unit. Detailed Implementation

[0037] The following is a detailed explanation with reference to the accompanying drawings.

[0038] This invention provides an out-of-bed detection alarm system and device to detect a patient's out-of-bed status and determine whether the patient is in a normal state based on the patient's historical medical record database. The term "following medical advice" in this invention refers to activities that the doctor sets in the patient's medical record database that the patient can or cannot perform, based on the patient's current condition. For example, a patient with massive hemoptysis should not get out of bed for one week and should maintain a supine position.

[0039] Example 1

[0040] The bed exit detection alarm system and device provided in this embodiment includes a bed body, such as... Figure 1 As shown, the bed is equipped with a pressure detection component 1. According to a preferred embodiment, the pressure detection component 1 is configured as a pressure sensor array. The pressure sensor array can detect the pressure values ​​exerted by the patient on various points on the bed. The pressure sensor array is communicatively connected to a processor. The pressure sensor array transmits the collected data to the processor. The bed also includes a distance detection component 2 for detecting the patient's distance from the bed and generating a distance signal, and a physiological indicator detection component 3 for monitoring the patient's physiological state. According to a preferred embodiment, the distance detection component 2 is configured as an infrared detector. The infrared detector is used to detect the patient's distance from the bed. The infrared detector is communicatively connected to a processor 4 to transmit the collected patient distance information from the bed to the processor. Preferably, the physiological indicator detection component 3 can be a wearable device, which is communicatively connected to the processor 4 to transmit the acquired physiological indicator information to the processor. Preferably, the processor can be located at the rear of the bed for easy viewing of the detection information by medical personnel. The bed device also includes an alarm unit 6. The alarm unit 6 is communicatively connected to the processor 4 to receive instructions from the processor 4. The processor 4 includes an information input unit 41, a first judgment unit 42, a second judgment unit 43, a time setting unit 44, and an analysis unit 45.

[0041] The information input unit 41 is used to obtain the patient's medical record information and the department information. Preferably, the information input unit 41 is communicatively connected to the patient's medical record database.

[0042] The first judgment unit 42 is used to judge pressure values ​​and pressure points. The first judgment unit 42 is equipped with a first pressure preset range, a second pressure value, and a first pressure reference point. The first pressure preset range is the pressure range exerted on the bed by the patient's own weight. Preferably, the first pressure preset range is the pressure range exerted on the bed by a fluctuation of 3 kg in the patient's own weight. The fluctuation value can be due to additional items placed on the bed or a decrease in the patient's own weight. The second pressure value is the lower limit of the pressure value, i.e., when the patient is not on the bed, the second pressure value is 0. The first pressure reference point refers to the various pressure points exerted on the bed by the patient when lying down according to medical orders.

[0043] The second judgment unit 43 is used to determine whether the patient's distance from the bed and the patient's physiological state are within normal ranges. The second judgment unit 43 is equipped with a first distance threshold, a second distance threshold, and a third distance threshold. The first distance threshold is the optimal distance from the bed allowed by the doctor's orders; the second distance threshold is the maximum distance from the bed allowed by the doctor's orders; and the third distance threshold is the maximum distance that the infrared detector can detect.

[0044] The time setting unit 44 is used to time the period of time a patient is away from the bed, and the time setting unit 44 is set with a first time threshold, a second time threshold, and a third time threshold. The first time threshold is half of the optimal time value allowed by the doctor's order to get out of bed; the second time threshold is the optimal time value allowed by the doctor's order to get out of bed; and the third time threshold is the upper limit of the time that the doctor's order suggests should not exceed when getting out of bed.

[0045] The analysis unit 45 can receive and analyze the results of the first judgment unit 42, the second judgment unit 43, and the time setting unit 44, and determine whether an alarm signal needs to be sent and what level of alarm signal to send. The processor 4 is communicatively connected to the central control system 5. The analysis unit 45 transmits the analyzed and judged alarm command to the central control system 5. The central control system 5 receives the alarm command and triggers the alarm unit 6 to issue a corresponding alarm command. The alarm command types include level one alarm, level two alarm, and level three alarm. Preferably, the alarm unit 6 can be an audible and visual alarm device. After receiving the command from the central control system 5, the audible and visual alarm device issues an alarm of the corresponding level. Among them, the level one alarm is the most serious level alarm. When the alarm device issues a level one alarm, the patient is in a dangerous state. The alarm device simultaneously issues a red light prompt and an audio prompt. The audio prompts the patient to immediately return to the bed rest position required by the doctor's orders and to call medical staff to the corresponding bed to conduct a physical examination and emergency measures for the patient. Level 2 alarm is a critical alarm. When the alarm device issues a Level 2 alarm, the patient may be in danger. The alarm device simultaneously emits a yellow light and provides a voice prompt, instructing the patient to return to the prescribed bed rest position. Medical staff then proceed to the corresponding bedside to conduct a physical examination. Level 3 alarm is a normal alarm. A Level 3 alarm emits a yellow light to remind the patient to maintain the prescribed bed rest position. Preferably, the central control system 5 is communicatively connected to the nurse station's signal call system. The judgment result of the analysis unit 45 of the processor 4 can be transmitted to the nurse station through the central control system 5 to alert medical staff to the condition of the patient in the corresponding bed, preventing the problem of delayed treatment due to the patient being in a dangerous situation.

[0046] The processor 4 reads data collected by the pressure sensor array at fixed intervals and analyzes the data to determine the patient's status upon leaving the bed. Different fixed intervals can be set according to the patient's condition and course of illness. Preferably, the fixed interval for the processor to collect data can be set to once every half minute.

[0047] Example 2

[0048] The bed exit detection alarm system and device provided in this embodiment can be configured with different monitoring programs based on the patient's historical medical record data, such as... Figure 2As shown in the figure. This embodiment uses a patient with pulmonary tuberculosis complicated by massive hemoptysis as an example to illustrate the beneficial effects of the present invention. For ease of description, the bed is divided into three parts, including the upper, middle and lower parts, corresponding to the patient's upper limbs, buttocks and lower limbs, respectively. Massive hemoptysis occurs when tuberculous lesions invade and destroy large blood vessels. During hemoptysis, the patient needs to lie flat with their head turned to one side, remain calm, slow the heartbeat, lower blood pressure, and facilitate hemostasis. During massive hemoptysis, blood clots can easily obstruct the airway and cause suffocation, so bed rest is necessary. After massive hemoptysis or immediately after hemoptysis stops (with blood in the sputum), the patient needs absolute bed rest or should not get up and move around. Bed rest for 3-7 days is required, and the patient can gradually get up and move around depending on their recovery. Pulmonary tuberculosis complicated by massive hemoptysis has a sudden onset. If rescue is not timely, suffocation can occur within 3-6 minutes, endangering the patient's life. Therefore, taking timely and effective measures and corresponding nursing emergency plans are very important to reduce the patient's mortality rate. This embodiment is for the monitoring procedure of patients who need absolute bed rest.

[0049] The information input unit 41 of processor 4 communicates with the patient medical record database to obtain patient medical record data and patient department information in real time. Based on the patient's medical orders and disease status, the pressure sensor array detects the pressure exerted on the bed by the patient with pulmonary tuberculosis complicated by massive hemoptysis and the pressure points on the bed. The pressure sensor array transmits the collected data to processor 4, which performs the first stage of analysis and generates the following judgment program:

[0050] The first judgment unit 42 of the processor 4 compares the received pressure value and pressure point with the first pressure preset range and the first pressure reference point. At this time, the received pressure value is within the first pressure preset range, and the pressure points of the patient on the bed received by the first judgment unit are compared with the first pressure reference point. The pressure points of the upper, middle and lower parts of the bed coincide with the first pressure reference point, indicating that the patient's body is completely on the bed and is in the supine position required by the doctor's orders. The analysis unit 45 judges the result fed back by the first judgment unit 52. The judgment result is that the patient with pulmonary tuberculosis complicated with massive hemoptysis is in the supine position required by the doctor's orders and no alarm needs to be issued.

[0051] The first judgment unit 42 of processor 4 compares the received pressure value and pressure point with the first pressure preset range and the first pressure reference point. At this time, the received pressure value is within the first pressure preset range. The first judgment unit 42 compares the pressure point of the patient with pulmonary tuberculosis complicated with massive hemoptysis on the bed with the first pressure reference point. The pressure at the upper part of the bed is zero, the pressure in the middle part increases, and the pressure at the lower part remains unchanged. This indicates that the patient's body is completely on the bed, but the patient has changed from a supine position to a sitting position. The analysis unit 45 judges the result fed back by the first judgment unit 42. The judgment result is that an alarm needs to be sent. The alarm type is a level three alarm. The patient receives a voice prompt that the patient needs to remain supine. At the same time, the medical staff will also receive a level three reminder alarm and go to the corresponding ward to check on the patient.

[0052] The first judgment unit 42 of processor 4 compares the received pressure value and pressure location with the first pressure preset range and the first pressure reference point. At this time, the received pressure value is within the first pressure preset range. The first judgment unit 42 compares the pressure location of the patient with pulmonary tuberculosis complicated with massive hemoptysis on the bed with the first pressure reference point. The pressure at the upper part of the original position of the bed is zero, the pressure at the middle part of the original position is zero, and the pressure at the lower part of the original position is zero. However, the pressure at the adjacent location at the upper part of the original position increases, the pressure at the adjacent location at the middle part of the original position increases, and the pressure at the adjacent location at the lower part of the original position increases. This indicates that the patient's body is completely on the bed, but the patient has changed from a supine position to a lateral position. The analysis unit 45 judges the result fed back by the first judgment unit 42. The judgment result is that an alarm needs to be sent. The alarm type is a level three alarm. The patient receives a voice prompt that the patient needs to maintain a supine position. At the same time, the medical staff will also receive a level three reminder alarm and go to the corresponding ward to check on the patient.

[0053] The first judgment unit 42 of processor 4 compares the received pressure value and pressure point with the first pressure preset range and the first pressure reference point. At this time, the received pressure value is within the first pressure preset range. The first judgment unit compares the pressure point of the patient with pulmonary tuberculosis complicated with massive hemoptysis on the bed with the first pressure reference point. The pressure in the upper part of the bed is zero, the pressure in the middle part is zero, and the pressure in the lower part increases. This indicates that the patient's body is completely on the bed, but the patient has changed from a supine position to a standing position. The analysis unit 45 judges the result fed back by the first judgment unit 42. The judgment result is that an alarm needs to be sent. The alarm type is a level three alarm. The patient receives a voice prompt that the patient needs to keep lying flat. At the same time, the medical staff will also receive a level three reminder alarm and go to the corresponding ward to check on the patient.

[0054] When the pressure value received by the first judgment unit 42 is within the first pressure preset range, the pressure point of the patient on the bed changes compared to the first pressure reference point. The pressure at the upper, middle, and lower parts of the original bed position returns to zero, while the pressure at the upper part near the edge of the bed increases, the pressure at the middle part of the edge position increases, and the pressure at the lower part of the edge position increases. This indicates that the patient's body is close to or located at the edge of the bed. Although the patient's body is entirely on the bed, there is a tendency to get off the bed or a risk of falling off the bed. The analysis unit 45 judges the result fed back by the first judgment unit 42. The judgment result is that an alarm needs to be sent. The alarm type is a level two alarm. The patient receives a voice prompt, which tells the patient to move towards the middle of the bed and not to get off the bed or to avoid falling off the bed. Medical staff go to the corresponding bed to check the patient's physical condition and inform the patient of the serious consequences that may be caused by getting off the bed or falling off the bed.

[0055] The pressure sensor array detects that the pressure exerted on the bed by a patient with pulmonary tuberculosis complicated by massive hemoptysis is 0, which is equal to the second pressure value. This indicates that the patient's body has completely left the bed, meaning the patient is out of bed. The analysis unit 45 judges the result fed back by the first judgment unit 42. The judgment result is that the patient is out of bed in a non-medical-ordered state. Once the patient is detected to be out of bed, the alarm unit 6 immediately sends an alarm. The alarm type is a level one alarm. The patient receives a voice prompt, which warns that being out of bed may cause suffocation, fainting, or other problems. The patient must immediately and safely return to the bed and resume the bed rest position required by the doctor. After receiving the level one alarm, medical staff need to promptly go to the corresponding bed to conduct a physical examination on the patient. If the patient is unwell, the medical staff can immediately provide treatment to ensure the patient's life safety.

[0056] Example 3

[0057] After about a week of treatment, patients with pulmonary tuberculosis complicated by massive hemoptysis can gradually get out of bed and move around. At this time, the patient can briefly leave the bed, and the processor 4 can adjust the judgment program according to the patient's recovery. When the patient is out of bed, the second detection unit starts working to monitor the patient's physiological status and distance from the bed. The bed is equipped with an infrared detector to detect the patient's distance from the bed. The infrared detector is connected to the processor 4. The infrared detector transmits the collected patient distance information from the bed to the second judgment unit 43 of the processor 4. The processor 4 performs the second stage of analysis: the second judgment unit 43 receives the distance information between the patient and the bed and compares the distance information with the first distance threshold, the second distance threshold and the third distance threshold respectively to determine whether the patient's distance from the bed is within the normal value. The first distance threshold can be set to 3m, the second distance threshold to 10m and the third distance threshold to 50m. At the same time, the time setting unit 44 of the processor 4 can time the time period when the patient leaves the bed and compare it with the first time threshold, the second time threshold and the third time threshold to determine whether the patient's time away from the bed is within the normal value. The first time threshold is set to 1min, the second time threshold is set to 2min and the third time threshold is set to 10min. Although patients with pulmonary tuberculosis complicated with massive hemoptysis can get out of bed for a short period of time after a period of treatment, the patient may suddenly cough up blood, so they cannot leave the bed for too long or too far. The information input unit 41 of processor 4 updates the acquired patient medical record data. For the patient with pulmonary tuberculosis complicated with massive hemoptysis, after one week of treatment, once the patient leaves the bed, the time setting unit starts timing, and processor 4 performs the second stage of analysis, generating the following judgment program:

[0058] When the patient's distance from the bed is less than or equal to the first distance from the bed and the time setting unit 44 determines that the patient's time from the bed is less than the first time threshold, the analysis unit 45 combines the information fed back by the second judgment unit 43 and the time setting unit 44 to obtain a judgment result. The judgment result is that the patient is at a normal distance from the bed and time from the bed, and the patient can return to the bed within the optimal time value allowed by the doctor's order, without needing to send an alarm.

[0059] When the patient's distance from the bed is less than or equal to the first distance from the bed, the time setting unit 44 determines that the patient's time from the bed is greater than the first time threshold and less than the second time threshold. The analysis unit 45 combines the information fed back by the second judgment unit 43 and the time setting unit 44 to obtain a judgment result. The judgment result is that the patient is at a normal distance from the bed, but the time from the bed has reached half of the optimal time value allowed by the doctor's order. The analysis unit 45 determines that a third-level alarm instruction needs to be sent to the alarm unit 6. The alarm unit 6 issues a voice prompt for the third-level alarm. The third-level alarm voice prompt indicates that the patient can start to return to the bed. At this time, the patient can slowly return to the bed and can return to the bed within the optimal time value allowed by the doctor's order.

[0060] When a patient's distance from the bed is greater than the first distance from the bed but less than the second distance from the bed, the time setting unit determines that the patient's time from leaving the bed is greater than the first time threshold but less than the second time threshold. The analysis unit combines the information fed back by the second judgment unit 43 and the time setting unit 44 to obtain a judgment result. The judgment result is that the patient has exceeded the normal distance from the bed and the time from leaving the bed exceeds half of the optimal time value allowed by the doctor's order. The patient cannot return to the bed within the optimal time value allowed by the doctor's order. This judgment result sends an instruction to the alarm unit 6, and the alarm unit 6 sends a voice prompt of the second-level alarm, indicating that the patient needs to return to the bed. Staying in a non-lying position for too long is not conducive to physical recovery and may lead to unexpected situations. At the same time, medical staff receive the corresponding second-level alarm. In this case, medical staff need to check whether the patient has returned to the bed and check their physical condition in a timely manner.

[0061] When the patient's distance from the bed exceeds the second distance from the bed and the time setting unit 44 determines that the patient's time from the bed exceeds the second time threshold, the analysis unit 45 combines the information fed back by the second judgment unit 43 and the time setting unit 44 to obtain a judgment result. The judgment result is that the patient has exceeded the second distance threshold and the time from the bed exceeds the optimal time allowed by the doctor's order. The patient cannot return to the bed within the optimal time allowed by the doctor's order, and the patient's condition may worsen during the process of getting out of bed, and massive hemoptysis may occur again during the process of getting out of bed. This judgment result sends an instruction to the alarm unit, and the alarm unit sends a voice prompt of the first-level alarm, prompting the patient to return to the bed. After receiving the first-level alarm, the medical staff need to immediately check the patient's physical condition. If a problem is found, the medical staff can immediately take corresponding rescue measures to ensure the patient's life safety.

[0062] Example 4

[0063] When a patient with pulmonary tuberculosis complicated by massive hemoptysis is allowed to get out of bed and walk for a relatively long period after treatment but cannot be discharged and needs to be observed for a period of time, some patients or their families lack common sense and believe that the patient has recovered. The patient secretly leaves the hospital to go home. Although the hemoptysis has stopped after treatment, the patient may relapse due to various factors. If massive hemoptysis occurs outside the hospital and treatment is not timely, the patient's life may be in danger. In this situation, the system generates the following judgment procedure: the patient's time out of bed exceeds a third time threshold and the patient's distance from the bed exceeds a third distance from the bed. Preferably, the third time threshold can be set to 3 hours. Preferably, the third distance threshold can be set to 50 meters. The analysis unit 45 receives the information from the time setting unit 44 and obtains the judgment result. If the judgment result is that the patient's time out of bed exceeds the maximum allowed time by the doctor's orders, the patient may have left the hospital. Based on the judgment result, the analysis unit 45 issues an instruction to the alarm unit 6, which sends a first-level alarm voice prompt, reminding medical staff to immediately notify the patient and their family and seriously inform them of the consequences of the patient leaving the hospital.

[0064] Example 5

[0065] The second detection unit of the bed exit detection alarm system provided in this embodiment includes a distance detection component 2 and a physiological indicator detection component 3. Preferably, the distance detection component 2 can be an infrared detector. Preferably, the physiological indicator detection component can be a wearable device. The wearable device can collect the patient's physiological parameter information and analyze whether the patient's physiological parameter information is within a preset range. Based on the patient's medical record information and the patient's department information obtained by the information input unit 41, the processor 4 automatically generates the patient's physiological status monitoring direction. For example, if the patient is a cardiology patient with heart failure, the detection direction is heart rate; if the patient is a respiratory patient with white lung, the detection direction is blood oxygen saturation. Due to the complexity of patient behavior, the physiological status monitoring direction is determined according to the patient's department and condition. If too many physiological statuses are detected, the processor 4 needs to judge a large amount of information, making it impossible to generate timely predictions and results analysis of patient behavior. Furthermore, multi-factor judgment will result in problems such as large judgment errors and long judgment time.

[0066] The wearable device communicates with the processor 4. The wearable device transmits the judged physiological indicators to the processor 4. The analysis unit 45 of the processor 4 combines the patient's physiological indicator judgment results and distance information to generate an alarm command. According to a preferred embodiment, the wearable device can be a smartwatch. The smartwatch worn by the patient can monitor their own physiological state in real time and generate physiological parameter information, including at least heart rate, blood oxygen saturation, and blood pressure information. Preferably, the physiological indicators include a first physiological parameter, a second physiological parameter, and a third physiological parameter. The first, second, and third physiological parameters are physiological parameters determined by the doctor based on the patient's condition and department. Preferably, for patients who have undergone heart surgery, the first physiological parameter is set to heart rate, the second physiological parameter is set to arterial pressure, and the third physiological parameter is set to central venous pressure. At the same time, the smartwatch can determine whether the detected physiological information is within a preset parameter range. After the patient gets out of bed, if all their physiological parameter information is within the preset parameter range, it indicates that the patient's physical condition is good, and the analysis unit determines that no alarm will be issued. After the patient leaves the bed, if their physiological parameters are not within the preset range, the analysis unit 45, combining the physiological parameters and distance information, determines whether the patient can return to the bed independently based on their current physical condition, and generates the following judgment procedure: If the analysis unit 45 determines that the patient can return to the bed independently, it prompts the patient to return immediately and monitors whether the return process is smooth. After the patient returns to the bed, it observes whether the patient's physiological parameters have returned to normal. If the analysis unit determines that the patient cannot return to the bed independently, it issues an alarm command, prompting medical staff to arrive at the patient's location, assist them in returning to the bed, and take appropriate treatment measures. In this embodiment, the physiological parameters are heart rate and blood oxygen saturation, but are not limited to these. The preset range for heart rate on the smartwatch is 60-100 beats / min, and the preset range for blood oxygen saturation is 95-100%. This embodiment uses a 25-year-old female patient as an example. In this embodiment, the first distance threshold is set to 20m, the second distance threshold is set to 50m, the first time threshold is set to 5min, and the second time threshold is set to 10min.

[0067] For patients with pulmonary tuberculosis complicated by massive hemoptysis who are allowed to get out of bed and walk around after treatment, the bed-off detection alarm system generates the following judgment procedure:

[0068] When the smartwatch detects that the patient's heart rate is 90 beats / min and blood oxygen saturation is 95%, both within the preset range, the patient's distance from the bed is less than the second distance threshold, the time spent away from the bed is less than the first time threshold, and the patient's direction of travel is towards the ward, the analysis unit 45 determines that the patient's physical condition is stable and the patient is on the way back to the bed. The patient will be able to return to the bed at the time specified by the doctor, and the analysis unit 45 determines that no alarm will be issued.

[0069] When the smartwatch monitors the patient's heart rate at 90 beats / min and blood oxygen saturation at 95%, both within the preset range, and the patient's distance from the bed exceeds the second distance threshold and the time spent away from the bed exceeds the second time threshold, but the patient's direction of movement is away from the ward, the analysis unit determines that the patient's physical condition is stable and they can return to the bed on their own. However, since the patient's direction of movement is not in the direction of returning to the bed, the patient cannot return to the bed within the time specified by the doctor's orders. The analysis unit 45 determines that a level 3 alarm needs to be sent. The analysis unit 45 sends the level 3 alarm instruction to the alarm unit, which prompts the patient that they have exceeded the time specified by the doctor's orders to return to the bed.

[0070] When the smartwatch detects that the patient's heart rate and blood oxygen saturation parameters are far above or below the preset range, for example, if the patient coughs up blood while getting out of bed, and their heart rate increases to 130 beats / min and their blood oxygen saturation is below 95% (e.g., 85%), and their distance has exceeded the second distance threshold, the patient is in a dangerous state. The analysis unit, combining physiological parameters and distance information, determines that the patient's current physical condition is such that they cannot continue walking, cannot return to their bed on their own, and that the patient's condition is dangerous. The analysis unit 45 then sends a Level 1 alarm command to the alarm unit. Upon receiving the Level 1 alarm information from the alarm unit, medical staff must immediately go to the patient's location, help the patient return to their bed, and take emergency measures.

[0071] When the smartwatch detects that the patient's heart rate, blood oxygen saturation, and blood pressure parameters are slightly above or below preset ranges—for example, if the patient's heart rate increases to 110 beats / min and blood oxygen saturation to approximately 95% due to fatigue during walking out of bed, and the distance is less than a second distance threshold—the analysis unit 45, combining physiological parameter information and distance information, determines that the patient needs to return to bed immediately. Given the patient's current physical condition, they can return to bed independently without assistance. The analysis unit 45 determines that a level 3 alarm needs to be sent and sends the level 3 alarm command to the alarm unit 6. The alarm unit 6 generates a level 3 alarm, prompting the patient to return to bed. After the patient returns to bed and rests for a period of time, if the patient's physiological parameters return to normal, the analysis unit 45 receives a result indicating that the patient's physiological parameters are within the preset range, and determines that no alarm needs to be sent. If, after the patient has returned to bed and rested for a period of time, the patient's physiological parameters do not return to normal and remain above or below the preset range, the analysis unit 45 receives the judgment information of the physiological parameters and analyzes that a level two alarm command needs to be sent. After receiving the command, the alarm unit 6 issues a voice prompt of a level two alarm, prompting medical staff to examine and treat the patient in a timely manner.

[0072] It should be noted that the specific embodiments described above are exemplary. Those skilled in the art can devise various solutions inspired by the disclosure of this invention, and these solutions all fall within the scope of this invention and its protection. Those skilled in the art should understand that this specification and its accompanying drawings are illustrative and do not constitute a limitation on the claims. The scope of protection of this invention is defined by the claims and their equivalents. This specification contains multiple inventive concepts; terms such as "preferredly," "according to a preferred embodiment," or "optionally" indicate that the corresponding paragraph discloses an independent concept. The applicant reserves the right to file divisional applications based on each inventive concept. Throughout the text, features introduced by "preferredly" are merely optional and should not be construed as mandatory. Therefore, the applicant reserves the right to abandon or delete relevant preferred features at any time.

Claims

1. A bed exit detection alarm system, characterized by, The application relates to a bed pressure monitoring system, which comprises: a first detection unit for detecting the pressure of a patient on a bed body and a pressure point and generating a pressure signal, which comprises a pressure detection component (1) distributed in multiple positions of the bed body to detect the pressure values of multiple contact points formed between the patient and the bed body; a second detection unit, which comprises a distance detection component (2) for monitoring the distance of the patient from the bed and generating a distance signal and a physiological index detection component (3) for monitoring the physiological state of the patient; a processor (4) for receiving the pressure signal generated by the first detection unit, the distance signal generated by the second detection unit and the physiological state signal of the patient, analyzing and judging the pressure signal, the distance signal and the physiological state signal, and generating an alarm instruction; wherein, the processor (4) judges the current posture of the patient in response to the change of the pressure value provided by the first detection unit and the change of the pressure detection component (1) region where the change of the pressure value occurs, and when the processor (4) judges that the patient is in a prescribed bed leaving state, the second detection unit starts to work to monitor the physiological state and the distance of the patient from the bed, and the processor judges whether an alarm instruction needs to be generated according to the physiological state and the distance of the patient from the bed; the processor (4) comprises: an information input unit (41) in communication connection with a patient medical record database, which is used to acquire the medical record information and the department information of the patient, so that the system changes the judgment program according to the real-time medical record information of the patient; a first judgment unit (42) for receiving the pressure signal generated by the first detection unit and judging whether the bed pressure is in a preset pressure range; a second judgment unit (43) for receiving the distance signal and the physiological state signal generated by the second detection unit and judging whether the distance from the bed and the physiological index are in a preset range; a time setting unit (44) for timing the bed leaving time of the user and judging whether the bed leaving time is in a preset time range; an analysis unit (45) for receiving and analyzing the judgment results of the first judgment unit, the second judgment unit and the time setting unit and generating an alarm instruction.

2. The system of claim 1, wherein, The first judgment unit (42) is provided with a first pressure preset range, a second pressure value and a first pressure reference point to judge whether the pressure signal generated by the first detection unit is in a preset pressure range, and further judge whether the patient is in a prescribed lying posture.

3. The system of claim 1, wherein, The second judgment unit (43) is provided with a first distance threshold, a second distance threshold and a third distance threshold to judge whether the distance signal generated by the second detection unit is in a preset distance range, and further judge the bed leaving state of the patient.

4. The system of claim 1, wherein, The time setting unit (44) is provided with a first time threshold, a second time threshold and a third time threshold to judge whether the bed leaving time of the user is in a preset time range.

5. The system of claim 1, wherein, The system comprises an alarm unit (6) for receiving the alarm instruction generated by the processor (4) and generating a corresponding alarm; the alarm types of the alarm unit (6) include a first-level alarm, a second-level alarm and a third-level alarm, so that the user can judge the dangerous degree of the patient state according to the alarm type.

6. The system of claim 2, wherein, The first pressure preset range is set as the pressure range of the user's body weight on the bed body, and the second pressure value is set as the pressure value when the patient is not on the bed body, and the first pressure preset range and the second pressure value are used to judge whether the patient's body is on the bed body; the first pressure reference point is set as each pressure point generated by the user on the bed body according to the medical order to judge the activity of the user on the bed body.

7. The system of claim 3, wherein, The first distance threshold is set as the best off-bed distance allowed by the medical order, the second distance threshold is set as the farthest off-bed distance allowed by the medical order, and the third distance threshold is set as the farthest distance that can be detected by the distance detection assembly (2), so as to judge whether the off-bed distance of the user is within the preset distance range.

8. The system of claim 4, wherein, The first time threshold is set as half of the best off-bed time value allowed by the medical order, the second time threshold is set as the best off-bed time value allowed by the medical order, and the third time threshold is set as the upper limit of the off-bed time prompted by the medical order, so as to judge whether the off-bed time of the user is within the preset time range.

9. The system of claim 5, wherein, The first detection unit is in communication connection with the processor (4), so that the processor (4) can receive the pressure signal generated by the first detection unit; the second detection unit is in communication connection with the processor (4), so that the processor (4) can receive the distance signal and the physiological state signal generated by the second detection unit; the alarm unit (6) is in communication connection with the processor (4), so that the alarm unit (6) receives the alarm instruction generated by the processor (4) and generates a corresponding alarm.

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