Pressure sore risk monitoring system
By setting up a sensor array and data processing module on the monitoring pad, the patient's microcirculation blood flow, temperature, humidity and pressure parameters are monitored in real time, and the real-time and accurate problems of pressure ulcer risk assessment are solved, and automated prevention and intervention of pressure ulcers are achieved.
Patent Information
- Application Number
- CN202510414240.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2025-08-01
AI Technical Summary
The existing pressure ulcer risk assessment lacks real-time and accurate monitoring methods, and relies on manual observation and regular turnover, resulting in the inability to effectively prevent the risk of pressure ulcers.
The sensor array is set up using monitoring pads, including photoplethysmographic sensors, temperature sensors, humidity sensors, oxygen partial pressure sensors and pressure sensors, to collect the patient's microcirculation blood flow signals, skin temperature, humidity, oxygen partial pressure and pressure distribution, evaluate through the data processing module, and use the adaptive adjustment module and early warning module for real-time intervention.
Accurate assessment and real-time intervention of pressure ulcer risks are achieved, reducing the risk of pressure ulcers and improving the automation and safety of patient care.
Smart Images
Figure CN120392004A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of medical monitoring technology, and in particular to a pressure sore risk monitoring system. Background Art
[0002] Pressure ulcers are caused by prolonged pressure, shear, or friction on the skin and soft tissues, leading to localized ischemia, hypoxia, and tissue damage. Existing pressure ulcer risk assessments often rely on manual observation and periodic turning, lacking real-time, accurate monitoring methods.
[0003] The existing treatment method requires regular inspection of artificial skin, for example, turning the patient every 2 hours, but 24% of ICU patients still suffer from pressure injuries; the existing pressure monitoring pad can only measure pressure distribution, and therefore lacks tissue perfusion assessment.
[0004] Therefore, how to effectively monitor patients' pressure ulcer risk is a technical problem that needs to be solved urgently. Summary of the Invention
[0005] In view of the above problems, the present invention provides a pressure sore risk monitoring system that overcomes the above problems or at least partially solves the above problems.
[0006] The present invention provides a pressure sore risk monitoring system, comprising:
[0007] The monitoring cushion is provided with a sensor array arranged in a preset area, and an adjustment layer is provided on the surface of the preset area. Each area is provided with: a photoplethysmography sensor, a temperature sensor, a humidity sensor, an oxygen partial pressure sensor, and a pressure sensor, which are respectively used to collect microcirculatory blood flow signals, skin surface temperature, skin surface humidity, local tissue oxygen partial pressure, and local pressure distribution of different tissue parts of the target patient;
[0008] a data processing module, configured to obtain a pressure ulcer risk assessment model, and based on the pressure ulcer risk assessment model and microcirculatory blood flow signals, skin surface temperature, skin surface humidity, local tissue oxygen partial pressure, and local pressure distribution of different tissue parts of the target patient, assess the pressure ulcer risk of different tissue parts of the target patient to obtain an assessment result;
[0009] The adaptive adjustment module is used to determine the target tissue site of the target patient based on the assessment result, where the pressure ulcer risk assessment result of the target tissue site is higher than a preset value, and adjust the adjustment layer corresponding to the target tissue site.
[0010] Preferably, it also includes:
[0011] The early warning module is used to generate early warning information based on the evaluation results and send it to the terminal device of the guardian or the cloud.
[0012] Preferably, the data processing module is configured to:
[0013] Obtain the historical microcirculation blood flow information, historical skin surface temperature, historical skin surface humidity, historical local tissue oxygen partial pressure, and historical local pressure distribution of different tissue sites of historical patients;
[0014] Adopt the Branden scale enhancement algorithm to obtain the historical pressure ulcer assessment results of different tissue sites of historical patients;
[0015] Based on the historical microcirculation blood flow information, historical skin surface temperature, historical skin surface humidity, historical local tissue oxygen partial pressure, and historical local pressure distribution of different tissue sites of historical patients, as well as the historical pressure ulcer assessment results of different tissue sites of historical patients, train to obtain a pressure ulcer risk assessment model.
[0016] Preferably, the adjustment layer includes:
[0017] A self-inflating pressure adjustment airbag group, configured to adjust the lying posture of the target tissue site by self-inflating the airbag group when the assessment result of the target tissue site exceeds a preset value.
[0018] Preferably, the self-inflating pressure adjustment airbag group includes: a plurality of airbags, each airbag is connected to a self-inflating mechanism, and the self-inflating mechanism is connected to the data processing module.
[0019] Preferably, the adjustment layer further includes:
[0020] A phase change material temperature control layer, configured to adjust the temperature of the target tissue site area when the skin surface temperature condition of the target tissue site does not meet the preset temperature condition.
[0021] Preferably, when monitoring the pressure ulcer of a patient in the supine position, the preset area is a human-shaped area drawn on the monitoring cushion; the sensor array is arranged in the heel area, sacral area, and scapular area corresponding to the human-shaped area.
[0022] Preferably, when monitoring a patient sitting, the preset area is the buttocks area drawn on the monitoring cushion, and the sensor array is arranged in the ischial tuberosity area corresponding to the buttocks area.
[0023] Preferably, when monitoring the pressure ulcer of a patient in the lateral position, the preset area is the lateral lying contour area of the human body drawn on the monitoring cushion, and the sensor array is arranged in the greater trochanter area and the lateral malleolus area of the foot corresponding to the lateral lying contour area of the human body.
[0024] Preferably, the monitoring cushion is further provided with:
[0025] A battery module for powering the sensor array.
[0026] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
[0027] The present invention provides a pressure ulcer risk monitoring system, including: a monitoring cushion, with a sensor array arranged in a preset area, and an adjustment layer arranged on the surface layer of the prediction area. Each unit array is arranged with: a photoplethysmography sensor, a temperature sensor, a humidity sensor, an oxygen partial pressure sensor, and a pressure sensor, which are respectively used to collect the microcirculation blood flow signal, the skin surface temperature condition, the skin surface humidity, the local tissue oxygen partial pressure condition, and the local pressure distribution condition of different tissue parts of the target patient; a data processing module, used to obtain a pressure ulcer risk assessment model, and based on the pressure ulcer risk assessment model and the microcirculation blood flow signal, the skin surface temperature condition, the skin surface humidity, the local tissue oxygen partial pressure condition, and the local pressure distribution condition of different tissue parts of the target patient, to evaluate the pressure ulcer risk of different tissue parts of the target patient and obtain an evaluation result; an adaptive adjustment module, used to determine the target tissue part of the target patient based on the evaluation result, where the pressure ulcer risk evaluation result of the target tissue part is higher than a preset value, and to adjust the adjustment layer corresponding to the target tissue part, by implementing the monitoring of skin temperature, humidity, oxygen partial pressure, pressure distribution, and tissue perfusion conditions, and using a prediction model, so as to accurately evaluate the pressure ulcer risk of the patient and provide corresponding intervention measures. Description of the Drawings
[0028] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:
[0029] Figure 1 Shows a schematic structural diagram of the pressure ulcer risk monitoring system in the embodiment of the present invention;
[0030] Figure 2 Shows a schematic diagram of the monitoring cushion corresponding to the supine position of the patient in the embodiment of the present invention. Detailed Embodiments
[0031] The following will describe the exemplary embodiments of the present invention in more detail with reference to the drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0032] An embodiment of the present invention provides a pressure ulcer risk monitoring system, as Figure 1 shown, including:
[0033] A monitoring cushion 101 is provided with a sensor array arranged in a preset area, and an adjustment layer is provided on the surface layer of the preset area. Each area is arranged with: a photoplethysmography sensor, a temperature sensor, a humidity sensor, an oxygen partial pressure sensor, and a pressure sensor, which are respectively used to collect the microcirculation blood flow signal, the skin surface temperature condition, the skin surface humidity, the local tissue oxygen partial pressure condition, and the local pressure distribution condition of different tissue parts of the target patient;
[0034] A data processing module 102 is used to obtain a pressure ulcer risk assessment model, and based on the pressure ulcer risk assessment model and the microcirculation blood flow signal, the skin surface temperature condition, the skin surface humidity, the local tissue oxygen partial pressure condition, and the local pressure distribution condition of different tissue parts of the target patient, to evaluate the pressure ulcer risk of different tissue parts of the target patient and obtain an evaluation result;
[0035] An adaptive adjustment module 103 is used to determine the target tissue part of the target patient based on the evaluation result, the pressure ulcer risk assessment result of which is higher than a preset value, and to adjust the adjustment layer corresponding to the target tissue part.
[0036] First, this monitoring cushion 101 is different from a conventional monitoring cushion. It is provided with a sensor array, including a photoplethysmography sensor, a temperature sensor, a humidity sensor, an oxygen partial pressure sensor, and a pressure sensor. The distribution positions of these sensors can facilitate the collection of the temperature, humidity, oxygen partial pressure condition, microcirculation blood flow condition, and pressure condition of the area where the patient fits the monitoring cushion 101.
[0037] Specifically, a photoplethysmography sensor is a sensor that measures the change in blood volume. It uses optical technology to obtain the microcirculation blood flow signal by monitoring the change in the amount of reflected light of the blood under the skin.
[0038] The oxygen partial pressure sensor is used to measure the pressure of oxygen in the blood, which is an important indicator reflecting the oxygenation state of the body.
[0039] The other temperature sensor, humidity sensor, and pressure sensor all adopt conventional sensors to measure the temperature, humidity, and pressure conditions of the local tissue area of the patient respectively.
[0040] By collecting the conditions of different tissue parts of the patient from various dimensions, the pressure ulcer risk can be comprehensively evaluated.
[0041] The following describes different tissue parts:
[0042] First, when a patient uses the monitoring cushion 101, they can adopt positions such as supine, lateral, and sitting. For different positions, the preset areas of the sensor array will vary:
[0043] For example Figure 2 As shown, when monitoring the pressure ulcers of a patient in the supine position, the preset area is the human-shaped area drawn on the monitoring cushion 101; the sensor array is set in the heel area, sacral area, and scapular area corresponding to the human-shaped area.
[0044] Since the heel area, sacral area, and scapular area are the positions where pressure ulcers are likely to occur when the patient is in the supine position. By setting the sensor array in the corresponding areas, these areas can be effectively monitored. Of course, there may be other areas prone to pressure ulcers in the supine position, which are not limited here.
[0045] When monitoring the patient in the sitting position, the preset area is the buttock area drawn on the monitoring cushion 101, and the sensor array is set in the ischial tuberosity area corresponding to the buttock area.
[0046] In order to more comprehensively monitor the pressure ulcers of the patient in the sitting position, the sensor array can be set for the entire buttock area to achieve more comprehensive monitoring. Of course, in order to save costs, the area where the sensor array is arranged can also be reduced, only in the ischial tuberosity area. Of course, different preset areas can be set according to the sitting habits of different patients.
[0047] When monitoring the pressure ulcers of the patient in the lateral position, the preset area is the lateral contour area of the human body drawn on the monitoring cushion 101, and the sensor array is set in the greater trochanter area and the lateral malleolus area of the foot corresponding to the lateral contour area of the human body.
[0048] Since the patient in the lateral position will form pressure ulcers on the body part attached to one side of the monitoring cushion 101, therefore, the corresponding signals of the patient are collected through the sensor array set on the corresponding part of the cushion when in the lateral position.
[0049] By setting the monitoring cushion 101 for patients in different lying positions, the monitoring needs of different patients can be met.
[0050] Next, the above-mentioned monitoring cushion 101 is used to collect the microcirculation blood flow signals, skin surface temperature conditions, skin surface humidity conditions, local tissue oxygen partial pressure conditions, and local pressure distribution conditions of different tissue parts of the target patient, and they are processed by the data processing module 102.
[0051] The data processing module 102 stores a pressure ulcer risk assessment model, which is specifically obtained by pre-training the data processing module 102.
[0052] Specifically, by obtaining the historical microcirculation blood flow information, historical skin surface temperature conditions, historical skin surface temperature, historical local tissue oxygen partial pressure conditions, and historical local pressure distribution conditions of different tissue sites of historical patients. Using the Branden scale enhancement algorithm, the historical pressure ulcer assessment results of different tissue sites of historical patients are obtained; based on the historical microcirculation blood flow information, historical skin surface temperature conditions, historical skin surface humidity, historical local tissue oxygen partial pressure conditions, and historical local pressure distribution conditions of different tissue sites of historical patients, as well as the historical pressure ulcer assessment results of different tissue sites of historical patients, a pressure ulcer risk assessment module is trained.
[0053] Among them, the historical pressure ulcer assessment results of different tissue sites of historical patients evaluated by the Branden scale enhancement algorithm at different times are input into the training model. Specifically, the Branden scale enhancement algorithm evaluates the pressure ulcer risk through multiple dimensions to comprehensively evaluate the health status of historical patients.
[0054] Then, the historical pressure ulcer assessment results and various conditions of the corresponding historical skin or local tissue are input into the training model for training, thereby obtaining a pressure ulcer risk assessment model.
[0055] The data processing module 102 precisely relies on this pressure ulcer risk assessment model and the collected microcirculation blood flow signals, skin surface temperature conditions, skin surface humidity, local tissue oxygen partial pressure conditions, and local pressure distribution conditions of different tissue sites of the target patient to obtain the pressure ulcer risk assessment results of different tissue sites of the target patient.
[0056] By setting a preset value for the assessment result, when the preset value is exceeded, it is determined that there is a pressure ulcer risk at this tissue site.
[0057] Of course, when the assessment result is lower than the preset value, it is determined that there is no pressure ulcer risk at this tissue site.
[0058] Therefore, the adaptive adjustment module 103 is used to determine the target tissue site of the target patient based on the assessment result, that is, the pressure ulcer risk assessment result of the target tissue site is higher than the preset value, and to adjust the adjustment layer corresponding to the target tissue site.
[0059] Specifically, the adjustment layer includes: a self-inflating pressure adjustment airbag group, which is used to automatically inflate the airbag group when the assessment result of the target tissue site exceeds the preset value to adjust the lying posture of the target tissue site.
[0060] The self-inflating pressure adjustment airbag group includes: a plurality of airbags, each airbag is connected to a self-inflating mechanism, and the self-inflating mechanism is connected to a data processing module 102. Among them, the airbags are distributed at positions corresponding to the target tissue site on the monitoring cushion 101. When it is detected that the risk of pressure ulcers at the target tissue site is relatively high, the data processing module 102 controls the self-inflating mechanism to inflate the airbag group at the corresponding position, so that the fitting area between the target tissue site and the monitoring cushion 101 is reduced, and then the effect of adjusting the lying position such as turning over is achieved, thereby avoiding the increase in the risk of pressure ulcers caused by long-term friction at the target tissue site.
[0061] In addition, the adjustment layer further includes:
[0062] A phase change material temperature control layer for adjusting the temperature of the target tissue site area when the skin surface temperature condition of the target tissue site does not meet the preset temperature condition.
[0063] In order to avoid the situation that the target patient is prone to overheating or hypothermia due to environmental changes during long-term bed rest or long-term sitting, which may lead to an increase in the risk of pressure ulcers. Therefore, a phase change material temperature control layer is provided on the surface layer of the monitoring cushion 101 for adjusting the temperature of the target tissue site area when the skin surface temperature condition of the target tissue site does not meet the preset temperature adjustment.
[0064] When the phase change material temperature control layer undergoes solid-liquid or liquid-gas phase change within the phase change temperature range, a large amount of latent heat is absorbed or released by the change in the molecular arrangement state, while the temperature of the material itself remains relatively constant, so as to ensure the optimal skin state at a temperature of 28-32°C and reduce the risk of pressure ulcers.
[0065] In an optional implementation manner, the pressure ulcer risk monitoring system further includes: an early warning module for generating an early warning message based on the evaluation result and sending it to the terminal device or the cloud of the caregiver.
[0066] The early warning module can obtain the monitored status in real time. By sending the early warning message to the terminal device or the cloud of the caregiver, the caregiver can take timely measures, or the caregiver can remind the patient to pay attention. Record it in the cloud for convenient later traceability.
[0067] In an optional implementation manner, the monitoring cushion 101 is further provided with: a battery module for supplying power to the sensor array.
[0068] By using the battery module, it is possible to perform real-time monitoring and timely remind the patient of body position changes even when there is no power connection, such as when going out in a sitting position.
[0069] By using the pressure ulcer risk monitoring system provided by the present invention, the occurrence of pressure ulcers can be effectively prevented, and timely intervention can be carried out in an adaptive adjustment manner to reduce the pressure ulcer risk.
[0070] One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
[0071] The present invention provides a pressure ulcer risk monitoring system, including: a monitoring soft pad, with a sensor array arranged in a preset area, and an adjustment layer arranged on the surface layer of the prediction area. Each unit array is arranged with: a photoplethysmography sensor, a temperature sensor, a humidity sensor, an oxygen partial pressure sensor, and a pressure sensor, which are respectively used to collect the microcirculation blood flow signal, the skin surface temperature condition, the skin surface humidity, the local tissue oxygen partial pressure condition, and the local pressure distribution condition of different tissue parts of the target patient; a data processing module, which is used to obtain a pressure ulcer risk assessment model, and based on the pressure ulcer risk assessment model and the microcirculation blood flow signal, the skin surface temperature condition, the skin surface humidity, the local tissue oxygen partial pressure condition, and the local pressure distribution condition of different tissue parts of the target patient, evaluate the pressure ulcer risk of different tissue parts of the target patient to obtain an evaluation result; an adaptive adjustment module, which is used to determine the target tissue part of the target patient based on the evaluation result, the pressure ulcer risk assessment result of the target tissue part is higher than a preset value, and adjust the adjustment layer corresponding to the target tissue part, and by implementing the monitoring of skin temperature, humidity, oxygen partial pressure, pressure distribution, and tissue perfusion conditions, using a prediction model, so as to accurately evaluate the pressure ulcer risk of the patient and provide corresponding intervention measures.
[0072] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments and all changes and modifications falling within the scope of the present invention.
[0073] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.
Claims
1. A pressure ulcer risk monitoring system, characterized in that, Including: A monitoring cushion, with a sensor array arranged in a preset area, and an adjustment layer arranged on the surface layer of the preset area. Each area is arranged with: a photoplethysmography sensor, a temperature sensor, a humidity sensor, an oxygen partial pressure sensor, and a pressure sensor, which are respectively used to collect the microcirculation blood flow signal, the skin surface temperature, the skin surface humidity, the local tissue oxygen partial pressure, and the local pressure distribution of different tissue parts of the target patient; A data processing module, which is used to obtain a pressure ulcer risk assessment model, and based on the pressure ulcer risk assessment model and the microcirculation blood flow signal, the skin surface temperature, the skin surface humidity, the local tissue oxygen partial pressure, and the local pressure distribution of different tissue parts of the target patient, evaluate the pressure ulcer risk of different tissue parts of the target patient to obtain an evaluation result; An adaptive adjustment module, which is used to determine the target tissue part of the target patient based on the evaluation result, where the pressure ulcer risk assessment result of the target tissue part is higher than a preset value, and adjust the adjustment layer corresponding to the target tissue part.
2. The pressure ulcer risk monitoring system according to claim 1, wherein It also includes: An early warning module, which is used to generate an early warning message based on the evaluation result and send it to the terminal device or the cloud of the caregiver.
3. The pressure ulcer risk monitoring system according to claim 1, characterized in that, The data processing module is used to: Obtain the historical microcirculation blood flow information, the historical skin surface temperature, the historical skin surface humidity, the historical local tissue oxygen partial pressure, and the historical local pressure distribution of different tissue parts of the historical patient; Adopt the Branden scale enhancement algorithm to obtain the historical pressure ulcer assessment results of different tissue parts of the historical patient; Based on the historical microcirculation blood flow information, the historical skin surface temperature, the historical skin surface humidity, the historical local tissue oxygen partial pressure, and the historical local pressure distribution of different tissue parts of the historical patient, as well as the historical pressure ulcer assessment results of different tissue parts of the historical patient, train to obtain a pressure ulcer risk assessment model.
4. The pressure ulcer risk monitoring system according to claim 1, wherein The adjustment layer includes: A self-inflating pressure adjustment airbag group, which is used to adjust the lying posture of the target tissue part by self-inflating the airbag group when the evaluation result of the target tissue part exceeds a preset value.
5. The pressure ulcer risk monitoring system according to claim 4, characterized in that, The self-inflating pressure adjustment airbag group includes: a plurality of airbags, each airbag is connected to a self-inflating mechanism, and the self-inflating mechanism is connected to the data processing module.
6. The pressure ulcer risk monitoring system according to claim 4, wherein, The adjustment layer also includes: A phase change material temperature control layer, which is used to adjust the temperature of the target tissue part area when the skin surface temperature of the target tissue part does not meet the preset temperature condition.
7. The pressure ulcer risk monitoring system according to claim 1, wherein, When monitoring the pressure ulcer of the patient in the supine position, the preset area is a human-shaped area drawn on the monitoring cushion; the sensor array is arranged in the heel area, the sacral area, and the scapular area corresponding to the human-shaped area.
8. The pressure ulcer risk monitoring system according to claim 1, wherein, When monitoring the patient sitting, the preset area is the buttocks area drawn on the monitoring cushion, and the sensor array is arranged in the ischial tuberosity area corresponding to the buttocks area.
9. The pressure ulcer risk monitoring system according to claim 1, wherein When monitoring the pressure ulcer of the patient in the lateral position, the preset area is the human body lateral contour area drawn on the monitoring cushion, and the sensor array is arranged in the greater trochanter area and the lateral malleolus area of the foot corresponding to the human body lateral contour area.
10. The pressure ulcer risk monitoring system according to claim 1, wherein, The monitoring cushion is also provided with: A battery module for powering the sensor array.