Device for preventing pressure sores

By integrating a single-chip intelligent temperature and humidity sensor and a mobile APP system into the pressure ulcer device, the problem of pressure ulcer prevention for long-term bedridden patients has been solved. It enables real-time temperature and humidity monitoring and turning reminders, reducing the incidence of pressure ulcers and improving nursing efficiency and patients' quality of life.

CN121845872APending Publication Date: 2026-04-14AFFILIATED HOSPITAL OF SHAANXI UNIV OF TRADITIONAL CHINESE MEDICINE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
AFFILIATED HOSPITAL OF SHAANXI UNIV OF TRADITIONAL CHINESE MEDICINE
Filing Date
2024-01-26
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Patients who are bedridden for a long time are prone to pressure ulcers. Existing equipment is not able to monitor the temperature and humidity of the pressure tissues in real time and remind caregivers to turn them over in time, resulting in a high incidence of pressure ulcers and affecting the patient's quality of life.

Method used

A single-chip intelligent temperature and humidity sensor is used to monitor the temperature and humidity of the patient's pressure points and to sound an alarm when the set value is reached. The system also provides prompts through a mobile APP and can be set to remind the patient to turn over, ensuring that caregivers can provide timely care.

Benefits of technology

It enables real-time temperature and humidity monitoring and turning reminders for long-term bedridden patients, reducing the incidence of pressure ulcers and improving patients' quality of life and caregivers' efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses equipment for preventing pressure sores. The equipment sequentially comprises a breathable layer, a viscous substance layer, a pressure sore receptor, a moisture absorption layer and a waterproof layer from top to bottom, the breathable layer is used for permeating water vapor and preventing water and bacteria from penetrating; the viscous substance layer is used for keeping the wound surface clean in an autolysis mode, formation of epithelial cells is facilitated, and the treatment effective rate of pressure sores is improved; the pressure sore receptor adopts a single-chip intelligent temperature and humidity sensor, so that a patient does not feel when using the pressure sore receptor, and a pressed part is not influenced; certain temperature and humidity are set for the equipment for preventing the pressure sores, a built-in sensor can monitor local temperature and humidity, when the temperature and humidity reach set values, alarm sound can be given out, and information is transmitted to a mobile phone APP system for prompting; the moisture absorption layer is used for absorbing moisture; and the waterproof layer is a waterproof diaphragm and is used for isolating bacteria and pollutants. The device helps a user to reduce friction, reminds the user to turn over in time, prevents pressure sores, and improves the life quality of the user.
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Description

Technical Field

[0001] This invention relates to health devices for the elderly, and more specifically to a device for preventing pressure ulcers. Background Technology

[0002] Pressure ulcers are currently one of the most common complications in bedridden patients. In recent years, with the aging of society and changes in the disease spectrum, the incidence of pressure ulcers has not decreased but has instead increased. International studies on pressure ulcers show that the incidence is 0-29% in home care and 2.3%-28% in long-term care facilities. Home-based long-term care patients have a higher rate of pressure ulcers and a higher mortality rate. The occurrence of pressure ulcers not only increases the psychological and economic burden on patients but can also exacerbate primary diseases and endanger life. Pressure ulcers severely impact the quality of life of long-term care patients.

[0003] Many long-term bedridden patients are elderly, whose skin is thin, inelastic, and insensitive. Coupled with the effects of severe illness, restricted body position, malnutrition, and skin dampness, they are very prone to pressure sores and need to be turned regularly. However, caregivers may forget to turn the patient due to other events. In this case, there is a need for equipment that can monitor the temperature, humidity, and time of pressure on the tissues and can promptly provide information to the caregiver to prevent pressure sores. Summary of the Invention

[0004] The main objective of this invention is to provide a device for preventing pressure ulcers. Based on clinical pressure ulcer care combined with ergonomic principles and the main external factors of pressure ulcer formation, and combined with technology, the device sends signals to the patient's caregiver through sensors. Combined with a mobile APP, the device can obtain the temperature, humidity, and duration of pressure on the patient's pressure points. Patients who are bedridden for a long time can receive timely and correct care by using this product, thus preventing the formation of pressure ulcers from the root.

[0005] The technical solution adopted in this invention is: a device for preventing pressure ulcers, which consists of, from top to bottom, a breathable layer, an adhesive layer, a pressure ulcer receptor, a moisture-absorbing layer, and a waterproof layer; The breathable layer is used to allow water vapor to pass through while preventing water and bacterial penetration. The viscous layer is used to keep the wound clean by autolysis, which helps the formation of epithelial cells and improves the treatment effectiveness of pressure ulcers. The pressure ulcer sensor uses a single-chip intelligent temperature and humidity sensor, which is imperceptible to the patient and has no effect on the pressure area. The pressure ulcer prevention device is set with a certain temperature and humidity. The built-in sensor can monitor the local temperature and humidity. When the set value is reached, an alarm sound will be emitted and the information will be transmitted to the mobile APP system for notification. The moisture-absorbing layer is used for moisture absorption; The waterproof layer is a waterproof membrane used to isolate bacteria and pollutants.

[0006] Furthermore, the mobile APP system includes: The pressure ulcer risk identification module displays detailed scales and corresponding scores for six factors of the Braden scale: perception, moisture, mobility, mobility, nutrition, and friction / shear. Users can select the corresponding items according to the actual assessment, and the system automatically calculates the scores, automatically identifies high-risk patients, and activates the pressure ulcer prevention guide module. The pressure ulcer prevention guidelines module is designed to be used in accordance with the NPUAP pressure ulcer prevention and treatment guidelines, including aspects such as skin management, patient positioning and activity, selection and methods of pressure-relieving items, application of dressings, and health education for patients and their families. The pressure ulcer assessment module is used by patients who have developed pressure ulcers. It displays a pressure ulcer assessment record sheet, including the location, stage, and size of the pressure ulcer. After the assessment is completed, appropriate nursing interventions are provided. The real-time monitoring module connects to the pressure ulcer sensor and allows for pre-setting of temperature, humidity, and turning time reminders. Based on the temperature, humidity, and pressure time sensed by the pressure ulcer sensor, if the set temperature, humidity, and pressure time are reached, the pressure ulcer sensor will sound an alarm. The mobile APP system can simultaneously issue a notification sound to remind the caregiver, so that the caregiver can hear the alarm sound from the bedridden patient when away from the patient and thus be able to help the patient turn over in time.

[0007] Furthermore, the method of using the device for preventing pressure ulcers includes: Temperature and humidity sensors: Pressure ulcer receptors can sense the temperature and humidity of the pressure area. When certain temperature and humidity levels are reached, an alarm will sound, prompting caregivers to turn the patient over and wipe their body in time to prevent pressure ulcers from forming. The pressure ulcer sensor can be set to remind the patient to turn over. When the turning time is reached or the pressure on the application site exceeds the set time or the minimum turning time is 2 hours, an alarm will sound to remind the caregiver to turn the patient over to prevent pressure ulcers. In the form of pressure ulcer patches, the pressure ulcer receptors can sense temperature, humidity, and pressure duration, and also have the pressure-reducing effect of ordinary pressure ulcer patches, reducing friction and relieving pressure. Connected to a mobile app, the pressure ulcer sensor can be linked to the caregiver's mobile app system. When it emits an alarm sound, the phone can receive a notification reminder to turn the patient over, preventing caregivers from forgetting the turning time while doing other tasks and failing to turn the patient over in time. Corresponding to the pressure ulcer sensor is a mobile app, through which patients and caregivers can learn about disease knowledge through push notifications, including pressure ulcer risk identification, pressure ulcer assessment, protection guidelines, real-time monitoring, and other sections.

[0008] Advantages of this invention: The pressure ulcer sensor of this invention uses a single-chip intelligent temperature and humidity sensor. The sensor is small in size, similar in volume to a match head, so patients can use it without feeling it and it has no effect on the pressure area. The bedridden device can be set to a certain temperature and humidity. The built-in sensor can monitor the local temperature and humidity. When the set value is reached, it can sound an alarm and transmit the information to a mobile APP for notification. The timer can be set to start when pressure is felt and reset to zero when pressure is relieved. The minimum turning time is 2 hours, but the turning time can also be set manually. When the patient has been in a certain position for the specified time, the alarm will sound to remind the caregiver to help the patient turn over in time to prevent pressure sores.

[0009] In the form of a regular pressure ulcer dressing, it functions as a pressure ulcer dressing. It can be applied to the bed to monitor local temperature and humidity, or it can be applied to the patient's pressure points to relieve skin pressure, reduce friction, absorb small to moderate amounts of exudate, keep the local skin dry, reduce patient pain, and increase patient comfort.

[0010] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0011] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0012] Figure 1 This is a cross-sectional view of the device for preventing pressure ulcers according to the present invention.

[0013] Figure label: 1 is a breathable layer, 2 is an adhesive layer, 3 is a pressure ulcer receptor, 4 is a moisture-absorbing layer, and 5 is a waterproof layer. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0015] refer to Figure 1 A device for preventing pressure ulcers, comprising, from top to bottom, a breathable layer, an adhesive layer, a pressure ulcer receptor, a moisture-absorbing layer, and a waterproof layer; The breathable layer is used to allow water vapor to pass through while preventing water and bacterial penetration. The viscous layer is used to keep the wound clean by autolysis, which helps the formation of epithelial cells and improves the treatment effectiveness of pressure ulcers. The pressure ulcer sensor uses a single-chip intelligent temperature and humidity sensor, which is imperceptible to the patient and has no effect on the pressure area. The pressure ulcer prevention device is set with a certain temperature and humidity. The built-in sensor can monitor the local temperature and humidity. When the set value is reached, an alarm sound will be emitted and the information will be transmitted to the mobile APP system for notification. The moisture-absorbing layer is used for moisture absorption; The waterproof layer is a waterproof membrane used to isolate bacteria and pollutants.

[0016] The mobile APP system includes: The pressure ulcer risk identification module displays detailed scales and corresponding scores for six factors of the Braden scale: perception, moisture, mobility, mobility, nutrition, and friction / shear. Users can select the corresponding items according to the actual assessment, and the system automatically calculates the scores, automatically identifies high-risk patients, and activates the pressure ulcer prevention guide module. The pressure ulcer prevention guidelines module is designed to be used in accordance with the NPUAP pressure ulcer prevention and treatment guidelines, including aspects such as skin management, patient positioning and activity, selection and methods of pressure-relieving items, application of dressings, and health education for patients and their families. The pressure ulcer assessment module is used by patients who have developed pressure ulcers. It displays a pressure ulcer assessment record sheet, including the location, stage, and size of the pressure ulcer. After the assessment is completed, appropriate nursing interventions are provided. The real-time monitoring module connects to the pressure ulcer sensor and allows for pre-setting of temperature, humidity, and turning time reminders. Based on the temperature, humidity, and pressure time sensed by the pressure ulcer sensor, if the set temperature, humidity, and pressure time are reached, the pressure ulcer sensor will sound an alarm. The mobile APP system can simultaneously issue a notification sound to remind the caregiver, so that the caregiver can hear the alarm sound from the bedridden patient when away from the patient and thus be able to help the patient turn over in time.

[0017] The method for using the device to prevent pressure ulcers includes: Temperature and humidity sensors: Pressure ulcer receptors can sense the temperature and humidity of the pressure area. When certain temperature and humidity levels are reached, an alarm will sound, prompting caregivers to turn the patient over and wipe their body in time to prevent pressure ulcers from forming. The pressure ulcer sensor can be set to remind the patient to turn over. When the turning time is reached or the pressure on the application site exceeds the set time or the minimum turning time is 2 hours, an alarm will sound to remind the caregiver to turn the patient over to prevent pressure ulcers. In the form of pressure ulcer patches, the pressure ulcer receptors can sense temperature, humidity, and pressure duration, and also have the pressure-reducing effect of ordinary pressure ulcer patches, reducing friction and relieving pressure. Connected to a mobile app, the pressure ulcer sensor can be linked to the caregiver's mobile app system. When it emits an alarm sound, the phone can receive a notification reminder to turn the patient over, preventing caregivers from forgetting the turning time while doing other tasks and failing to turn the patient over in time. Corresponding to the pressure ulcer sensor is a mobile app, through which patients and caregivers can learn about disease knowledge through push notifications, including pressure ulcer risk identification, pressure ulcer assessment, protection guidelines, real-time monitoring, and other sections.

[0018] This invention is suitable for use by long-term bedridden patients, malnourished elderly people with mobility difficulties. It has multiple practical functions, realizes the sensing of temperature, humidity and pressure time, and is a high-tech pressure ulcer sensor that meets the needs of humanized use. It can help users reduce friction, remind them to turn over in time, prevent the formation of pressure ulcers, and improve their quality of life.

[0019] There are two sizes available: 10×10cm and 15×18cm, which can be used for application to different body parts.

[0020] The top layer is a breathable layer; The bottom layer is an elastic waterproof membrane that provides good protection against bacteria and contaminants, reducing the incidence of wound infection. The surface is coated with a low-viscosity polymer that allows for gentle fixation and easy removal without sticking. The inner layer consists of viscous substances (including materials such as hydrocolloids and artificial elastomers) and sensing devices. It keeps the wound clean by autolysis, which helps the formation of epithelial cells and can improve the treatment efficiency of pressure ulcers. The sensors detect temperature, humidity, and pressure to provide alerts.

[0021] Product Functions Temperature, humidity, and pressure sensing The sensor uses a single-chip intelligent temperature and humidity sensor. The sensor is small, about the size of a match head, so patients won't feel it during use, and it has no effect on pressure points. The bedridden patient monitors specific temperature and humidity levels; the built-in sensor monitors the local temperature and humidity, and when the set values ​​are reached, it emits an alarm and transmits the information to a mobile app for notification.

[0022] Report to the police immediately The bed rest monitor allows for time settings; it starts timing when pressure is felt and resets when pressure is relieved. The minimum turning time is 2 hours, but users can also set their own turning times. When a patient has been in a certain position for the specified time, an alarm will sound to remind caregivers to assist the patient in turning over in time to prevent pressure sores.

[0023] Pressure ulcer patch form Bedside Comfort uses the form of a regular pressure ulcer patch, which functions as a pressure ulcer patch. It can be applied to the bed to monitor local temperature and humidity, or it can be applied to the patient's pressure points to relieve skin pressure, reduce friction, absorb small to moderate amounts of exudate, keep the local skin dry, reduce patient pain, and increase patient comfort.

[0024] Mobile APP system Pressure ulcer risk identification This pressure ulcer risk identification module is designed based on the Braden Risk Assessment Scale (RAS). Clicking on this module displays detailed scales and corresponding scores for the six factors of the Braden scale: perception, sensory perception, mobility, mobility, nutrition, and friction / shear force. Users can select the appropriate items based on their actual assessment, and the system automatically calculates the scores, automatically identifies high-risk patients, and activates the pressure ulcer prevention guide module.

[0025] Pressure ulcer prevention guidelines Guided by the NPUAP guidelines for the prevention and treatment of pressure ulcers, this module includes aspects such as skin management, patient positioning and activity, selection and methods of pressure-relieving items, application of dressings, and health education for patients and their families.

[0026] Pressure ulcer assessment This module is suitable for patients with pressure ulcers and is designed according to the pressure ulcer assessment criteria and grading system of the 2007 National Pressure Ulcer Advisory Panel (NPUAP). Upon entering this module, a pressure ulcer assessment record form is displayed, including the location, stage, and size of the pressure ulcer. After completing the assessment, appropriate nursing interventions are provided.

[0027] Real-time monitoring The app connects to the pressure ulcer sensor of the bedridden patient, allowing users to preset temperature, humidity, and turning time reminders. Based on the temperature, humidity, and pressure time sensed by the sensor, the sensor will sound an alarm if the set temperature, humidity, and pressure time are reached. The mobile app will also simultaneously issue a notification sound to remind the caregiver, so that the caregiver can hear the alarm sound from the bedridden patient when away from the patient and thus be unable to help the patient turn over in time.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for preventing pressure ulcers, characterized in that, The device consists of, from top to bottom, a breathable layer, an adhesive layer, a pressure ulcer sensor, a moisture-absorbing layer, and a waterproof layer. The breathable layer is used to allow water vapor to pass through while preventing water and bacterial penetration. The viscous layer is used to keep the wound clean by autolysis, which helps the formation of epithelial cells and improves the treatment effectiveness of pressure ulcers. The pressure ulcer sensor uses a single-chip intelligent temperature and humidity sensor, which is not felt by the patient and has no effect on the pressure site. The device for preventing pressure ulcers is set with specific temperature and humidity levels. The built-in sensors can monitor the local temperature and humidity. When the set values ​​are reached, an alarm will sound and the information will be transmitted to a mobile app for notification. The moisture-absorbing layer is used for moisture absorption; The waterproof layer is a waterproof membrane used to isolate bacteria and pollutants.

2. The device for preventing pressure ulcers according to claim 1, characterized in that, The mobile APP system includes: The pressure ulcer risk identification module displays detailed scales and corresponding scores for six factors of the Braden scale: perception, moisture, mobility, mobility, nutrition, and friction / shear. Users can select the corresponding items according to the actual assessment, and the system automatically calculates the scores, automatically identifies high-risk patients, and activates the pressure ulcer prevention guide module. The pressure ulcer prevention guidelines module is designed to be used in accordance with the NPUAP pressure ulcer prevention and treatment guidelines, including aspects such as skin management, patient positioning and activity, selection and methods of pressure-relieving items, application of dressings, and health education for patients and their families. The pressure ulcer assessment module is used by patients who have developed pressure ulcers. It displays a pressure ulcer assessment record sheet, including the location, stage, and size of the pressure ulcer. After the assessment is completed, appropriate nursing interventions are provided. The real-time monitoring module connects to the pressure ulcer sensor and allows for pre-setting of temperature, humidity, and turning time reminders. Based on the temperature, humidity, and pressure time sensed by the pressure ulcer sensor, if the set temperature, humidity, and pressure time are reached, the pressure ulcer sensor will sound an alarm. The mobile APP system can simultaneously issue a notification sound to remind the caregiver, so that the caregiver can hear the alarm sound from the bedridden patient when away from the patient and thus be able to help the patient turn over in time.

3. The device for preventing pressure ulcers according to claim 1, characterized in that, The method for using the device to prevent pressure ulcers includes: Temperature and humidity sensors: Pressure ulcer receptors can sense the temperature and humidity of the pressure area. When certain temperature and humidity levels are reached, an alarm will sound, prompting caregivers to turn the patient over and wipe their body in time to prevent pressure ulcers from forming. The pressure ulcer sensor can be set to remind the patient to turn over. When the turning time is reached or the pressure on the application site exceeds the set time or the minimum turning time is 2 hours, an alarm will sound to remind the caregiver to turn the patient over to prevent pressure ulcers. In the form of pressure ulcer patches, the pressure ulcer receptors can sense temperature, humidity, and pressure duration, and also have the pressure-reducing effect of ordinary pressure ulcer patches, reducing friction and relieving pressure. Connected to a mobile app, the pressure ulcer sensor can be linked to the caregiver's mobile app system. When it emits an alarm sound, the phone can receive a notification reminder to turn the patient over, preventing caregivers from forgetting the turning time while doing other tasks and failing to turn the patient over in time. Corresponding to the pressure ulcer sensor is a mobile app, through which patients and caregivers can learn about disease knowledge through push notifications, including pressure ulcer risk identification, pressure ulcer assessment, protection guidelines, real-time monitoring, and other sections.