CN116077022A - Pressure sore early warning method and system for severe patients - Google Patents
Pressure sore early warning method and system for severe patients Download PDFInfo
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- G01L1/18—Measuring force or stress, in general using properties of piezo-resistive materials, i.e. materials of which the ohmic resistance varies according to changes in magnitude or direction of force applied to the material
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Abstract
The invention belongs to the technical field of medical care auxiliary instruments, in particular to a pressure sore early warning method and a pressure sore early warning system for a severe patient, wherein the pressure sore early warning method for the severe patient uses a flexible film pressure acquisition patch to be arranged at a stress point of skin tissue of the patient, monitors the pressure born by corresponding parts and transmits real-time data through a wireless network, can timely master the pressure of the tissue of the pressed part of the patient, and when the pressure bearing capacity of the local tissue exceeds a certain range and a certain time, the pressure sore early warning is sent out to prompt medical staff and carers to alert the patient that pressure sore danger occurs, measures such as turning over the patient are timely taken, the evaluation workload of nursing staff can be greatly lightened through early warning, and pain caused by pressure sore of the severe patient is reduced; the flexible film pressure acquisition patch used by the severe patient pressure sore early warning system can be used as a medical pressure reduction patch, can be used for monitoring the occurrence rate of pressure sores of patients in real time, and has two purposes.
Description
Technical Field
The invention belongs to the technical field of medical care auxiliary instruments, and particularly relates to a pressure sore early warning method and system for severe patients.
Background
Pressure sores are also known clinically as pressure lesions, and refer to necrosis and ulcers formed by ischemia and hypoxia of the skin and tissues caused by varying degrees of pressure or shear force. Pressure sores can not only increase pain of patients and aggravate illness state and prolong recovery time of diseases, but also endanger life due to complications such as septicemia caused by secondary infection.
The incidence rate of pressure sores is positively related to skin tissue pressure and duration, and for severe patients, such as postoperative hypoproteinemia, elderly patients, human clinical high-risk patients suffering from coma, dementia, depression, quadriplegia, sensory disturbance and other diseases, long-term bedridden patients are required for disease or treatment, and even long-term braking by sedation treatment is required during hospitalization, so long-term bedridden nursing is the most main factor causing pressure sores to occur in the current intensive care unit.
The prevention and treatment of pressure sores are a core problem in nursing work of severe medical departments, and are also a key index for evaluating nursing quality, so that not only can medical resource loss be increased, but also economic pressure of patients can be increased. If the patient is subjected to pressure sore risk real-time monitoring and evaluation, comprehensive nursing can be realized according to risk early warning, so that the pressure sore incidence rate can be reduced, and the good prognosis of the patient is ensured.
According to the current research results, specific related risk factors for clinically forming pressure sores are as follows:
1. pressure: pressure sores are caused not only by vertical pressure but also by friction and shear forces. Usually associated with body position, is caused by the combined action of 2 or more forces, and when the sustained external pressure exceeds the normal capillary pressure, ischemia, hypoxia and cell metabolic disorder occur in the tissues to cause necrosis of the tissues and pressure sores.
(1) Vertical pressure: sustained pressure on the local tissue is the most important factor causing pressure sores. The skin and subcutaneous tissue can endure a certain pressure in a short time, if the pressure is more than or equal to 8.0kPa continuously, microcirculation is blocked continuously, so that the tissue is anoxic, blood vessel collapse and thrombosis are caused, and pressure sores are caused.
(2) Friction force: when a patient is in bed, the skin can be rubbed by the retrograde resistance on the surface of the bed sheet at any time, so that the contact surface of the bed sheet and the skin relatively move, and the damage to the stratum corneum is easily caused by acting on the skin. The skin is wet and polluted after injury, and pressure sores occur.
(3) Shear force: the bones and deep tissues slide downwards due to the action of gravity, the skin and superficial tissues stay in place due to friction force, relative displacement is generated between the two tissues, so that shearing force exists between the two tissues, and the influences of the stress of the tissues and blood vessels are elongated, twisted and even torn, so that deep tissue necrosis occurs. The shearing force is formed by adding vertical pressure and friction force, and is closely related to the body position. When a patient is lying on the bed to lift the head of the bed, the body slides downwards to cause friction between the skin and the bed, and the gravity in the vertical direction of the body is added to cause shearing force.
2. Movement: loss or diminution of physical movement is also the most common risk factor for pressure sores, such as stroke, spinal cord injury, long-term deep sedation, etc.
3. Skin is stimulated by moisture or faeces: the patient is braked for a long time, the skin is stimulated by sweat, excrement and the like, and the pH value is changed to reduce the protective capability of the epidermis layer, so that pressure sores are formed.
4. Nutritional status: patients with insufficient nutrition intake or postoperative hypoproteinemia are prone to negative nitrogen balance, muscle atrophy and subcutaneous fat reduction, and at the moment, if the stress points of the prone position are continuously stressed too strongly, blood circulation disturbance is easy to occur, so that pressure sores are caused. The force of the body weight of the obese patient on the skin is larger, and the force is positively related to the occurrence of pressure sores.
5. Age: pressure sores often occur in elderly patients who are bedridden for a long period of time. With age, the body's ability to effectively distribute pressure is impaired, with changes in collagen synthesis, reduced mechanical strength of the tissue, and increased stiffness, resulting in reduced tolerance to fluid flow in the tissue. The older the age, the less elastic the soft tissue, the lower the sensory function, the slower the blood circulation, and the easy formation of thrombus at the pressed part, which causes necrosis, resulting in pressure sores.
Pressure sore good hair position: pressure sores are prone to occur in processes that lack tissue protection, no muscle wrapping, or thinner muscle layers. The body has different points of force applied under different positions, and the positions where pressure sores occur are different.
Supine position: pressure sores are well developed in the occipital tuberosity, shoulder blade, elbow, spinal tuberosity, sacral tail, lateral malleolus, heel, etc.
Lateral position: pressure sores are well developed in auricles, acromion, elbows, hips, medial and lateral knee joints, medial malleolus, lateral malleolus, etc.
Prone position: pressure sores are well developed in the forehead, cheeks, shoulders, pinna, breasts of females, genitals of males, iliac crest, knees, dorsum of feet, toes, etc.
Sitting position: pressure sores are well developed in the ischial tuberosities, sacral cauda.
The aim of evaluating the risk of pressure sores is to determine the dangerous population to be subjected to preventive measures and the special factors in danger, so that manpower and material resources are concentrated on the special population. Risk assessment scales include braking, fasting, nutritional status, disturbance of consciousness, etc., which can increase the incidence and severity of pressure sores. The currently common methods of assessing the risk of pressure sores in patients are the Braden scale and the Norton scale.
The Braden scoring is shown in the following table:
| scoring content | 1 minute | 2 minutes | 3 minutes | 4 minutes |
| Feel that: uncomfortable feeling ability to compression part | Complete loss of | Severe loss of | Mild loss of | Is not damaged |
| Humidity: degree of skin exposure to moisture | Continuous wetting | Very humid | Occasionally wet | Little moisture |
| Activity: degree of physical activity | Bedridden patient | Is limited to seats | Doll walking | Frequent walking |
| Mobility capability: ability to change and control body position | Can not at all | Severe limitations | Mild restriction | Is not limited by |
| Nutrition: ingestion situation | Severe and bad conditions | The defects are | Appropriately, is | Good quality |
| Friction and shear forces | Has the following components | Potential for | Without any means for | Without any means for |
* In the table above, except that the scores of friction force and shearing force are 1-3 points, all the other points are 1-4 points, and the smaller the scores are, the worse the organ functions of the patient are, and the higher the risk of pressure sores is. The score is less than or equal to 16 points, and is considered to have certain danger; score is less than or equal to 12 points, belongs to high-risk patients, and corresponding measures should be taken to prevent pressure sores.
The Norton scoring is shown in the following table:
| score value | General conditions | Mental condition | Ability to move | Exercise capacity | Fecal incontinence and urinary incontinence |
| 1 minute | Good (good) | Alertness | Free movement | Is not limited by | Without any means for |
| 2 minutes | In general | Desert of cold | Activities under help | Mild limitation | Occasionally |
| 3 minutes | Difference of difference | Confusion of | Dependent wheelchair | Is very limited | Urine collection |
| 4 minutes | Very poor | Coma of coma | Bed for lying in bed | Cannot move | Feces and urine |
* In the above table, the smaller the score, the higher the risk of developing pressure sores. The total score is 18-20, and the occurrence rate of pressure sores is only 5%; score is less than or equal to 14 points, which indicates that pressure sores are easy to occur.
The prior clinical pressure sore prevention measures mainly depend on timing evaluation of nursing groups and the use of pressure reduction patches, such as evaluation according to the two evaluation methods, which need to subjectively evaluate the occurrence of pressure sore according to the running force and skin condition of patients, and implement measures when the tendency of pressure sore appears, and early warning and early intervention cannot be performed to prevent the formation of pressure sore. In addition, the current conventional guiding method is to turn over a critical patient every 2 hours, but the conventional turning over every 2 hours still stays in an experience stage, and cannot scientifically guide clinic to prevent pressure sores, so that a more scientific and effective technology is needed to guide and prompt medical staff.
Disclosure of Invention
The invention aims to solve the technical problem of providing a pressure sore early warning method and a pressure sore early warning system for severe patients, which can timely and accurately remind medical staff to turn over the patients and avoid the pressure sore of the patients.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a severe patient pressure sore early warning method, which comprises the following steps:
providing a flexible membrane pressure acquisition patch on the skin of a patient, thereby forming at least one pressure monitoring site;
the flexible film pressure collecting patch is in signal connection with the upper computer, and the upper computer collects the pressure born by the skin of the patient in real time through the flexible film pressure collecting patch;
according to the pressure data of the skin of the patient collected by the upper computer, the change of the skin pressure at the pressure monitoring site on the patient along with time is calculated, and when local skin tissue is pressed beyond a certain range and for a certain time, an alarm is sent out to prompt the patient to take protective measures in time when ischemic damage to the skin tissue is possibly caused.
Preferably, a plurality of flexible film pressure collecting patches are distributed on the skin of a patient, and the flexible film pressure collecting patches are attached to easily pressed parts of the skin of the patient.
Preferably, the upper computer is connected with a plurality of flexible film pressure acquisition pastes through wireless mode, the upper computer is through the mode of scanning a plurality of flexible film pressure acquisition pastes the pressure signal of response and gathers.
Preferably, the upper computer is a portable mobile device with a display screen, and the upper computer can display the monitoring data of a plurality of pressure monitoring sites of one patient and can also display the monitoring data of the same pressure monitoring site of a plurality of patients.
Preferably, when the local skin tissue is pressed beyond a certain range and a certain time, the area corresponding to the relevant pressure monitoring site on the display screen of the upper computer highlights and alarms, or the upper computer is connected with an alarm through a signal, and the alarm alarms.
Preferably, a logistic regression model analysis software is arranged in the upper computer, the logistic regression model analysis software establishes a logistic regression analysis model by combining various risk factors of the patient, such as age, sex, weight, BMI and body fat, which lead to pressure sores, then calculates probability values of pressure sores caused by the pressure magnitudes and durations of different pressure monitoring site positions of the patient according to the data monitored by the pressure monitoring site, and triggers the upper computer to alarm when the probability values reach preset alarm probability values.
Preferably, the upper computer is provided with pressure sore monitoring and early warning software, and based on the pressure sore monitoring and early warning software, the functions realized by the upper computer comprise the following aspects:
(1) Acquisition and display functions of real-time pressure data: the collection is started and stopped through the corresponding operation buttons of the pressure sore monitoring and early warning software, the collection period is adjustable, and the automatic starting and stopping time can be set;
(2) Sensitivity adjustment function: the sensitivity of the flexible film pressure acquisition patch can be adjusted to adapt to different application scenes;
(3) Pressure calibration function: calibrating the collection value of the flexible film pressure collection patch by placing a known load;
(4) Data export function: pressure data of a required time period or a certain range of pressure monitoring sites can be derived according to a time axis, and data files in EXCEL and TXT formats can be supported and derived;
(5) Video recording and playback of a display interface are supported;
(6) And the method supports the statistics and operation of the pressure data and has a user-defined function.
The invention also provides a pressure sore early warning system for severe patients, which comprises:
the flexible film pressure acquisition patch has the functions of pressure data acquisition and wireless communication;
the upper computer is connected with the flexible film pressure acquisition patch in a signal manner, and the upper computer collects pressure data received by the skin of a patient in real time through the flexible film pressure acquisition patch;
the signal communication unit comprises a wireless PDA terminal, all the flexible film pressure acquisition patches attached to each patient carry out data acquisition and transmission through the wireless PDA terminal, and the signal communication unit also comprises a plurality of wireless signal transfer devices arranged in a ward, so that the signal transmission coverage area is large, and an upper computer can receive data signals of the flexible film pressure acquisition patches on a plurality of patients;
and the alarm unit is in signal connection with the upper computer, and when the upper computer judges that the patient has the possibility of pressure sore occurrence based on the received pressure data for monitoring the patient, the upper computer triggers the alarm unit to alarm, thereby reminding medical staff of turning over the patient.
Preferably, the flexible film pressure collecting patch is formed by combining a medical decompression patch with a piezoresistive flexible film pressure sensor and a wireless signal transmission module, and is powered by a button cell, and the flexible film pressure collecting patch is a disposable product and can be used as a medical decompression patch.
Preferably, the upper computer is a portable mobile device, the upper computer is provided with a wireless signal receiver, a data processing unit, a display screen and keys, and the alarm unit is integrated on the upper computer.
Compared with the prior art, the invention has the beneficial effects that:
1. the pressure sore early warning method for the severe patient uses the flexible film pressure collecting paste to be arranged at the stress point of the skin tissue of the patient, monitors the pressure born by the corresponding part and transmits real-time data through a wireless network, can timely master the pressure of the tissue of the pressed part of the patient, and gives early warning when the pressure bearing capacity of the local tissue exceeds a certain range and a certain time possibly to cause ischemic damage, so that medical staff and carers are reminded of warning that the patient is at risk of pressure sore, measures such as turning over the patient are timely taken, the assessment workload of the carers can be greatly reduced through early warning, and the pain caused by pressure sore of the severe patient is reduced.
2. The flexible film pressure acquisition patch used by the severe patient pressure sore early warning system can be used as a medical pressure reduction patch, can be used for monitoring the occurrence rate of pressure sores of patients in real time, is a disposable product, can effectively avoid cross use of clinical patients, and reduces the occurrence rate of nosocomial infection.
3. The method for early warning the pressure sore of the severe patient adopts a wireless communication technology to collect transmission data, reduces the use of physical lines, and does not interfere with normal vital sign monitoring in clinical treatment.
4. The severe patient pressure sore early warning method can process data by establishing a logistic regression model, and the regression model is established to analyze the pressure sore occurrence rate by combining the age, sex, weight, BMI, body fat and other risk factors of the patient from the clinical research perspective, so that the result is scientific guiding.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
fig. 1 is a diagram showing a pressure distribution diagram of skin tissue monitoring of a patient displayed by an upper computer in an embodiment of a method for early warning pressure sores of a severe patient according to the present invention.
Fig. 2 is a schematic diagram of an embodiment of a pressure sore early warning system for severe patients according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In one embodiment, a method for early warning pressure sores of severe patients is provided, the method for early warning pressure sores of severe patients includes:
(1) A plurality of flexible film pressure collecting patches are distributed on the skin of a patient, and the flexible film pressure collecting patches are attached to the easily pressed part of the skin of the patient, so that a plurality of pressure monitoring sites are formed on the skin tissue of a human body. The flexible film pressure collecting patch can adopt a flexible film pressure sensor with the model number of SI 4-G.
(2) Each flexible film pressure acquisition paste is in signal connection with an upper computer, the upper computer is a portable computer and is provided with a display screen, the upper computer is in signal connection with each flexible film pressure acquisition paste through a circuit, the upper computer supplies power for the flexible film pressure acquisition paste through the circuit, and the pressure suffered by the skin of a patient is collected in real time through the flexible film pressure acquisition paste based on the circuit.
The upper computer stores at least pressure data in a continuous monitoring period before the current time, for example, 2 hours are set as a monitoring period, and the pressure data in 2 continuous hours before the current time point are stored, so that the upper computer can make early warning judgment based on the data, and the monitored pressure data can be collected every 5 seconds.
(3) According to the pressure data of the skin of the patient collected by the upper computer, the change of the skin pressure at the pressure monitoring site on the patient along with time is calculated, when the pressure of local skin tissues exceeds 30-35 mmHg and lasts for more than 2 hours, the upper computer judges that the pressure monitoring site possibly causes ischemic damage to the skin tissues, namely, an alarm is sent out to prompt the patient to turn over in time, an alarm used for alarming is a loudspeaker connected with the upper computer, and a sound is played through the loudspeaker to inform medical staff of which pressure monitoring site of which patient has pressure and duration exceeding standards.
In one embodiment, the flexible film pressure collecting patch used in the pressure sore early warning method for the severe patient has a wireless transmission function, the flexible film pressure collecting patch comprises a piezoresistive flexible film pressure sensor (model SI 4-G) and a wireless signal transmission module (STX 882 PRO), as well as an analog-to-digital conversion circuit, a thin button battery and a voltage stabilizing circuit, wherein the thin button battery is electrically connected to the voltage stabilizing circuit and is used for supplying power to the piezoresistive flexible film pressure sensor, the analog-to-digital conversion circuit and the wireless signal transmission module, the piezoresistive flexible film pressure sensor is connected to the wireless signal transmission module through the analog-to-digital conversion circuit, the interval time (5 seconds) for the wireless signal transmission module to transmit pressure data outwards is set, and the flexible film pressure collecting patch can transmit the acquired pressure data outwards through the wireless signal transmission module at regular time. In addition, the flexible film pressure collecting paste is also provided with a filtering circuit and a signal amplifying circuit which are conventional signal processing circuits, signals collected by the piezoresistive flexible film pressure sensor are filtered, amplified and conditioned and finally converted into digital signals, the digital signals are transmitted to an upper computer through wireless signals, and the collected digital signals are stored, analyzed and displayed by special application software in the upper computer for users to use. In addition, the flexible film pressure collecting patch carries a piezoresistive flexible film pressure sensor, a wireless signal transmission module, a button cell and the like through the medical pressure reducing patch, so that the flexible film pressure collecting patch can be used as the medical pressure reducing patch, the probability of pressure sore generation can be reduced, and in addition, the flexible film pressure collecting patch is a disposable product, and cross infection is avoided during use.
In one embodiment, the flexible film pressure collecting patch used in the severe patient pressure sore early warning method has a wireless transmission function, the flexible film pressure collecting patch comprises a piezoresistive flexible film pressure sensor (model is SI 4-G) and a wireless signal transmission module, the wireless signal transmission module comprises a wireless radio frequency transceiver chip Si24R1, an MCU microcontroller (a microcontroller with model is MCP3002-I/SN and having an analog-to-digital conversion function) further comprises a thin button battery and a voltage stabilizing circuit, the thin button battery is electrically connected to the voltage stabilizing circuit and is used for supplying power to the piezoresistive flexible film pressure sensor, the MCU microcontroller and the wireless radio frequency transceiver chip, the piezoresistive flexible film pressure sensor and the wireless radio frequency transceiver chip are electrically connected to the MCU microcontroller, the wireless radio frequency transceiver chip can receive signals and transmit the signals outwards, and the interval time for transmitting the pressure data outwards can be modified by transmitting the signals to the flexible film pressure collecting patch through an upper computer.
In one embodiment, the method for early warning pressure sores of severe patients numbers a plurality of flexible film pressure collecting patches distributed on the skin of the patient so as to be identified by an upper computer, wherein N is equal to M flexible film pressure collecting patches distributed on the skin of the patient, N represents the number of rows of flexible film pressure collecting patches, M represents the number of flexible film pressure collecting patches in each row, and the flexible film pressure collecting patches are attached to the skin of the patient at positions which are easy to be pressed, such as occipital tuberosity, shoulder blade, elbow, spinal tuberosity, sacral tail and heel are easy to be pressed when the patient is in a supine position; when the patient is in the lateral position, the auricle, the acromion, the elbow, the hip, the medial and lateral sides of the knee joint and the medial and lateral malleolus are easy to be pressed positions. The upper computer is connected with each flexible film pressure acquisition patch signal, the numbers of the flexible film pressure acquisition patches are stored in the upper computer, and the upper computer circularly acquires the pressure signals sensed by the N.times.M flexible film pressure acquisition patches in a scanning mode.
In one embodiment, the upper computer used in the pressure sore early warning method for the severe patient can display monitoring data of a plurality of pressure monitoring sites of the patient, pressure sore monitoring early warning software is installed in the upper computer, a database is also installed in the upper computer to store the collected pressure data, the pressure sore monitoring early warning software can generate a pressure distribution diagram from the monitoring data collected by the same patient each time based on the data stored in the database, the pressure distribution diagram displays the pressure data of each pressure monitoring site on the patient at the current moment, as shown in fig. 1 and 2, when local skin tissue is pressed beyond a certain range and for a certain time, the pressure distribution diagram displayed on the display screen of the upper computer corresponds to the area of the relevant pressure monitoring site, the pressure distribution diagram of the monitoring result of the patient is displayed, the high-brightness area in the diagram indicates the skin tissue compression size and the duration timeout of the pressure monitoring sites, and the patient needs to turn over, and otherwise, the patient has the risk of pressure sore.
The upper computer can also display the monitoring data of the same pressure monitoring site of a plurality of patients, and for most patients, the time is in the supine position, so in actual use, the positions of the flexible film pressure acquisition patches distributed on each patient are basically consistent, and the upper computer conveniently checks the pressure condition of the patient by displaying the monitoring data of the same pressure monitoring site of a plurality of patients on one pressure distribution map.
Furthermore, pressure sore monitoring and early warning software installed in an upper computer used by the pressure sore early warning method for the severe patient has the functions of collecting and displaying real-time pressure data, an operation starting button, an operation stopping button, a collection period adjusting button, a timing button and a display button (which are all virtual buttons) are arranged on an operation interface of the pressure sore monitoring and early warning software, the upper computer starts to receive data of a flexible film pressure collection patch when the operation starting button is clicked, the upper computer stops receiving the data of the flexible film pressure collection patch when the operation stopping button is clicked, the collection period adjusting button is clicked to display a collection period adjusting input frame, a new collection period can be input, the time setting input frame is clicked, the automatic collection starting time and the automatic collection stopping time can be input, the pressure distribution map appears on the upper computer when the display button is clicked, the monitoring data of a plurality of pressure monitoring sites of one patient can be selected to be displayed on the pressure distribution map, and the monitoring data of the same pressure monitoring site of the plurality of patients can also be selected to be displayed on the pressure distribution map.
The pressure sore monitoring and early warning software installed in the upper computer used by the pressure sore early warning method for the severe patient also has a sensitivity adjusting function, a pressure calibrating function and a data deriving function. The sensitivity adjustment function can adjust the sensitivity of the flexible film pressure acquisition patch so as to adapt to different application scenes, the sensitivity adjustment is to adjust the accuracy of the acquired pressure data, and the sensitivity adjustment is to adjust the data, for example, if the weight of a patient is large, the sensitivity can be adjusted to be low, and the whole monitoring result is not influenced. The pressure calibration function is to calibrate the collection result of the flexible film pressure collection patch, in particular to calibrate the collection value of the flexible film pressure collection patch by placing a known load. The data export function is to export the data stored in the upper computer, and can export the pressure data of a certain pressure monitoring site in the required time period according to the time axis, and can export the pressure data of all the pressure monitoring sites on a certain patient in the required time period according to the time axis, and can also export the pressure data of a certain range of pressure monitoring sites in the required time period according to the time axis, so as to support exporting into EXCEL and TXT format data files.
As shown in fig. 1, the upper computer used in the severe patient pressure sore early warning method also supports the video recording and playback functions of the display interface, the video recording of the display interface is to record each pressure distribution diagram, and the pressure distribution diagram can be continuously watched during playback, so that the pressure change condition of the patient can be observed in a video mode. The upper computer used in the severe patient pressure sore early warning method also supports some statistics and operation on pressure data, and has a user-defined function, including statistics and operation on the size and duration of pressure data of a certain pressure monitoring point on a patient in a period before the current moment, and as shown in fig. 1, when the video of an interface is displayed, the user can define the video duration, the time interval of each frame and the like.
In one embodiment, the upper computer used in the method for early warning the pressure sore of the severe patient is provided with logistic regression model analysis software, the logistic regression model analysis software establishes a logistic regression analysis model by combining various risk factors of the patient, such as age, sex, weight, BMI and body fat, which lead to the pressure sore, the logistic regression analysis model is established, data for regression analysis are required to be acquired before establishing the logistic regression analysis model, namely, the age, sex, weight, BMI and body fat of about 200 patients suffering from the long-term bedridden patient are acquired, partial pressure sore of the patients is acquired, parameters in the logistic regression analysis model are obtained by taking the acquired data as samples, then the probability value of the pressure sore caused by the pressure at different pressure monitoring sites of the patient is calculated by the logistic regression analysis model, and the probability value of the pressure sore is caused by the duration time, when the preset alarm probability value is reached, namely, the upper computer is triggered to give more attention to the personalized condition of the patient, and the considered factors are more comprehensive, so that the accuracy of judgment is favorable for improvement.
In one embodiment, a pressure sore early warning system for severe patients is provided, which comprises a flexible film pressure acquisition patch 1, an upper computer 4, a signal communication unit and an alarm unit, wherein the upper computer 4 is a portable computer, and the alarm unit is a loudspeaker of the computer and alarms through voice. Each group of flexible film pressure collecting patches 1 is arranged on a patient (two groups are shown in fig. 2, one group is arranged in each dotted line box, each group comprises a plurality of flexible film pressure collecting patches), and the flexible film pressure collecting patches 1 have the functions of pressure data collection and wireless communication.
The flexible film pressure collecting patch 1 combines a conventional medical pressure reducing patch with a piezoresistive flexible film pressure sensor and a wireless signal transmission module, is a disposable product, can be used as a medical pressure reducing patch, the piezoresistive flexible film pressure sensor can detect the pressure of a stress point of a patient, the pressure condition of the skin of the patient is monitored in real time, the wireless signal transmission module is used for processing and transmitting pressure signals from the piezoresistive flexible film pressure sensor in a wireless mode, and the wireless signal transmission module integrates an analog-to-digital conversion circuit to convert analog pressure signals into digital signals and send the digital signals outwards.
The signal communication unit comprises a wireless PDA terminal 2, all the flexible film pressure acquisition patches 1 attached to each patient carry out data acquisition and transmission through the wireless PDA terminal 2, and the signal communication unit also comprises a plurality of wireless signal transfer devices 3 arranged in a ward, so that the signal transmission coverage area is large, and the purpose that one upper computer 4 can receive data signals of the flexible film pressure acquisition patches on a plurality of patients is achieved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a severe patient pressure sore early warning method which is characterized in that the method comprises the following steps:
providing a flexible membrane pressure acquisition patch on the skin of a patient, thereby forming at least one pressure monitoring site;
the flexible film pressure collecting patch is in signal connection with the upper computer, and the upper computer collects the pressure born by the skin of the patient in real time through the flexible film pressure collecting patch;
according to the pressure data of the skin of the patient collected by the upper computer, the change of the skin pressure at the pressure monitoring site on the patient along with time is calculated, and when local skin tissue is pressed beyond a certain range and for a certain time, an alarm is sent out to prompt the patient to take protective measures in time when ischemic damage to the skin tissue is possibly caused.
2. The method for early warning of pressure sores in critically ill patients according to claim 1, characterized by: the pressure collecting patches of the flexible films are distributed on the skin of a patient, and the pressure collecting patches of the flexible films are attached to the easily pressed parts of the skin of the patient.
3. The method for early warning of pressure sores in critically ill patients according to claim 2, characterized by: the upper computer is connected with a plurality of flexible film pressure acquisition pastes through a wireless mode, and the upper computer acquires the pressure signals sensed by a plurality of flexible film pressure acquisition pastes through a scanning mode.
4. The method for pre-warning pressure sores of severe patients according to claim 3, wherein: the upper computer is portable mobile equipment with a display screen, and can display the monitoring data of a plurality of pressure monitoring sites of one patient and also display the monitoring data of the same pressure monitoring site of a plurality of patients.
5. The method for early warning of pressure sores in critically ill patients of claim 4, wherein: and when the local skin tissue is pressed to exceed a certain range and a certain time, the area corresponding to the relevant pressure monitoring site on the display screen of the upper computer highlights and alarms, or the upper computer is connected with an alarm through a signal, and the alarm alarms.
6. The method for early warning of pressure sores in critically ill patients according to claim 1, characterized by: the upper computer is provided with logistic regression model analysis software, the logistic regression model analysis software establishes a logistic regression analysis model by combining various risk factors of patients such as age, sex, weight, BMI and body fat, which lead to pressure sores, then calculates probability values of pressure sores caused by the pressure magnitudes and duration of different pressure monitoring site parts of the patients based on data monitored by the pressure monitoring site through the logistic regression analysis model, and triggers the upper computer to alarm when the preset alarm probability values are reached.
7. The method for early warning of pressure sores in critically ill patients of claim 4, wherein: the upper computer is internally provided with pressure sore monitoring and early warning software, and based on the pressure sore monitoring and early warning software, the functions which can be realized by the upper computer comprise the following aspects:
(1) Acquisition and display functions of real-time pressure data: the collection is started and stopped through the corresponding operation buttons of the pressure sore monitoring and early warning software, the collection period is adjustable, and the automatic starting and stopping time can be set;
(2) Sensitivity adjustment function: the sensitivity of the flexible film pressure acquisition patch can be adjusted to adapt to different application scenes;
(3) Pressure calibration function: calibrating the collection value of the flexible film pressure collection patch by placing a known load;
(4) Data export function: pressure data of a required time period or a certain range of pressure monitoring sites can be derived according to a time axis, and data files in EXCEL and TXT formats can be supported and derived;
(5) Video recording and playback of a display interface are supported;
(6) And the method supports the statistics and operation of the pressure data and has a user-defined function.
8. A severe patient pressure sore early warning system, comprising:
the flexible film pressure acquisition patch has the functions of pressure data acquisition and wireless communication;
the upper computer is connected with the flexible film pressure acquisition patch in a signal manner, and the upper computer collects pressure data received by the skin of a patient in real time through the flexible film pressure acquisition patch;
the signal communication unit comprises a wireless PDA terminal, all the flexible film pressure acquisition patches attached to each patient carry out data acquisition and transmission through the wireless PDA terminal, and the signal communication unit also comprises a plurality of wireless signal transfer devices arranged in a ward, so that the signal transmission coverage area is large, and an upper computer can receive data signals of the flexible film pressure acquisition patches on a plurality of patients;
and the alarm unit is in signal connection with the upper computer, and when the upper computer judges that the patient has the possibility of pressure sore occurrence based on the received pressure data for monitoring the patient, the upper computer triggers the alarm unit to alarm, thereby reminding medical staff of turning over the patient.
9. The severe patient pressure sore warning system of claim 8, wherein: the flexible film pressure collecting patch is formed by combining a medical pressure reducing patch with a piezoresistive flexible film pressure sensor and a wireless signal transmission module and is powered by a button cell, and the flexible film pressure collecting patch is a disposable product and can be used as the medical pressure reducing patch.
10. The severe patient pressure sore warning system of claim 8, wherein: the upper computer is portable mobile equipment, a wireless signal receiver, a data processing unit, a display screen and keys are arranged on the upper computer, and the alarm unit is integrated on the upper computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310044025.0A CN116077022A (en) | 2023-01-29 | 2023-01-29 | Pressure sore early warning method and system for severe patients |
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| CN202310044025.0A CN116077022A (en) | 2023-01-29 | 2023-01-29 | Pressure sore early warning method and system for severe patients |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117084640A (en) * | 2023-10-20 | 2023-11-21 | 广州华一生物科技有限公司 | Intelligent pressure sore prevention nursing system based on 5G and control method thereof |
| CN117789977A (en) * | 2023-11-30 | 2024-03-29 | 华中科技大学同济医学院附属同济医院 | Novel intelligent early warning and prevention integrated method and system for pressure sores |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117084640A (en) * | 2023-10-20 | 2023-11-21 | 广州华一生物科技有限公司 | Intelligent pressure sore prevention nursing system based on 5G and control method thereof |
| CN117084640B (en) * | 2023-10-20 | 2024-01-05 | 广州华一生物科技有限公司 | Intelligent pressure sore prevention nursing system based on 5G and control method thereof |
| CN117789977A (en) * | 2023-11-30 | 2024-03-29 | 华中科技大学同济医学院附属同济医院 | Novel intelligent early warning and prevention integrated method and system for pressure sores |
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