Temperature measurement and blood oxygen patch used after flap transplantation and severed finger replantation

Abstract

The invention discloses a temperature measurement and blood oxygen patch used after a flap transplantation operation and a severed finger replantation operation, the temperature measurement and blood oxygen patch comprises a protective isolation layer, a function integration layer and an attaching layer from outside to inside, and the function integration layer comprises a high-precision NTC thermistor sensor, a reflection type blood oxygen sensor, a microprocessor and the like; the temperature in the range of 32-42 DEG C and the blood oxygen saturation of 70%-100% can be accurately monitored, the accuracy reaches + / -0.1 DEG C and + / -2% respectively, data are collected once every 30 seconds, and early warning is triggered when the data are abnormal; the built-in Bluetooth module can stably transmit data with a mobile phone APP or a hospital central monitoring system, and the APP has an intelligent analysis function; the patch body is made of a medical-grade liquid silica gel material and is light, thin and comfortable, the sensor module is specially packaged and integrated, the battery module is a button battery, the endurance is 7-10 days, and the outer protective isolation layer is covered with a medical-grade transparent polyurethane film. The temperature and the blood oxygen of the postoperative part can be accurately monitored in real time, timely early warning is achieved, the surgical success rate is increased, pain of a patient is relieved, and medical experience is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical monitoring devices, and particularly to a temperature and blood oxygen patch for use after flap transplantation and finger replantation surgeries. Background Art

[0002] Flap transplantation and finger replantation surgeries are of great significance in the modern surgical field, bringing hope for the restoration of function and appearance to patients with tissue defects and limb amputations. However, the success of the surgery depends not only on the delicate intraoperative operation but also on postoperative monitoring, which plays a decisive role. Currently, postoperative monitoring mainly relies on medical staff to regularly observe the color, temperature, swelling degree, and capillary refill of the flap or replanted finger manually. However, this method is highly subjective and limited by the observation interval, making it difficult to detect early subtle changes in a timely manner, easily missing the best intervention opportunity, leading to flap necrosis or replantation failure, causing pain to patients and increasing medical costs. With the development of medical technology, there is an urgent need for a precise, convenient, and real-time monitoring device to improve the postoperative monitoring effect.

[0003] The traditional manual observation method has many limitations. Medical staff usually conduct inspections every few hours, and this intermittent observation is difficult to capture the subtle changes that occur within a short period. For example, vascular crisis often occurs within a short time, and if not detected and treated in a timely manner, it will have a serious impact on the survival of the flap or replanted finger. In addition, manual observation is greatly affected by subjective factors, and there are differences in the experience and judgment criteria of different medical staff, which may lead to inaccurate assessment of the condition.

[0004] From the patient's perspective, during the postoperative recovery process, they need to maintain a relatively quiet environment for wound healing. Frequent entry and exit of medical staff into the ward for observation may not only interfere with the patient's rest but also increase the patient's anxiety. The patient is already physically weak after the operation, and excessive psychological burden will have an adverse impact on their recovery.

[0005] At the same time, the rational utilization of medical resources is also an important issue currently faced. The human resources of medical staff are limited, and a large amount of time spent on regular observation may lead to delays in other more important nursing tasks. If an efficient postoperative monitoring device can be introduced, medical staff can devote more energy to the comprehensive care of patients and other treatment links, improving the overall quality of medical services.

[0006] Although there are already some medical monitoring devices on the market, most of them have problems such as large volume, inconvenient wearing, and inaccurate monitoring data. Some devices cannot achieve long-term continuous monitoring or require complex operation procedures, which are not suitable for patients with flap transplantation and finger replantation who need key attention after surgery. In some remote areas or primary medical institutions, the lack of medical equipment further restricts the improvement of postoperative monitoring levels. Therefore, the development of a temperature and blood oxygen patch that can accurately, conveniently, and real-time monitor the temperature and blood oxygen saturation after flap transplantation and finger replantation is not only a requirement for technological development but also an urgent need in clinical medical practice. Such a device will help improve the success rate of surgery, relieve patients' pain, reduce medical costs, optimize the allocation of medical resources, and has important clinical value and social significance. Summary of the Invention

[0007] The purpose of the present invention is to provide a temperature and blood oxygen patch for use after flap transplantation and finger replantation, which can realize real-time and accurate monitoring of the temperature and blood oxygen saturation of the flap and finger replantation sites, promptly detect abnormal conditions such as vascular crises, and improve the success rate of surgery.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A temperature and blood oxygen patch for use after flap transplantation and finger replantation, which sequentially includes a protective isolation layer, a functional integration layer, and a fitting layer from the outer layer to the inner layer;

[0010] The functional integration layer includes an NTC thermistor sensor, a reflective blood oxygen sensor, a microprocessor, a Bluetooth module, a battery module, and a flexible printed circuit board. The NTC thermistor sensor and the reflective blood oxygen sensor are integrated on the flexible printed circuit board and are connected to the microprocessor. The microprocessor is connected to the Bluetooth module, and the battery module provides electrical energy for the entire temperature and blood oxygen patch.

[0011] Further, the main body of the temperature and blood oxygen patch is made of medical-grade liquid silicone material, manufactured by an injection molding process, with a thickness of 1-2 mm, and the area is designed to be 3-5 cm according to the requirements of different monitoring sites 2 , and the surface is treated with micro-nano hydrophilic treatment to improve the stability and comfort of skin fitting.

[0012] Further, the NTC thermistor sensor and the reflective blood oxygen sensor are integrated on the flexible printed circuit board at the center position of the patch through a packaging process, and a thin layer of biocompatible protective film covers the surface of the sensor in contact with the skin.

[0013] Further, the reflective blood oxygen sensor integrates an infrared light-emitting diode and a photodetector.

[0014] Furthermore, the battery module uses a CR2032 button battery as a power source, is connected to the circuit via a metal spring, is installed on one side of the patch, and adopts an independent battery compartment design. The battery compartment cover is fixed to the patch via a buckle.

[0015] Furthermore, the protective isolation layer is covered with a layer of medical-grade transparent polyurethane film, which is fixed by medical pressure-sensitive adhesive, has a thickness of 0.05 mm, and is equipped with a small pull ring.

[0016] Furthermore, a matching mobile phone APP adopts a cross-platform framework developed by React Native to perform wireless data transmission with the Bluetooth module.

[0017] Furthermore, the method of using the temperature measurement and blood oxygen patch includes:

[0018] S1: Preoperative preparation

[0019] Medical staff check the appearance and power of the temperature and blood oxygen patch before the end of the operation;

[0020] S2: Paste location

[0021] Clean and smooth the skin near the flap transplantation area or the replantation site of the severed finger, disinfect it with alcohol, peel off the patch protective layer after it dries, align the center with the monitoring site, and press it tightly;

[0022] S3: Data Monitoring

[0023] After the patient returns to the ward, the nurse connects the patch to receive data through a mobile phone APP or the central monitoring system. Medical staff can pay attention at any time during hospitalization. Discharged patients can check the data through the APP and provide regular feedback to the doctor.

[0024] The temperature measurement and blood oxygen patch for flap transplantation and finger replantation of the present invention has the following beneficial effects:

[0025] 1. Improve monitoring efficiency: real-time and continuous monitoring saves medical staff time and energy.

[0026] 2. Early risk warning: Capture abnormalities in a timely manner, provide a basis for doctors to judge the condition, and improve the timeliness of intervention.

[0027] 3. Improve patient experience: light and comfortable, does not affect daily activities, and reduces patients' pain and psychological burden. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The present invention is a schematic diagram of the structure of a temperature measurement and blood oxygen patch used after skin flap transplantation and replantation of severed fingers. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Components of the embodiments of the present invention that are usually described and illustrated in the drawings here can be arranged and designed in various different configurations.

[0030] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "installed", "connected", "connected" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Embodiment:

[0032] This embodiment provides a temperature and blood oxygen patch for use after skin flap transplantation and finger replantation, which sequentially includes a protective isolation layer 10, a functional integration layer 20, and an adhesion layer 30 from the outer layer to the inner layer;

[0033] The functional integration layer 20 includes an NTC thermistor sensor 21, a reflective blood oxygen sensor 22, a microprocessor 23, a Bluetooth module 24, a battery module 25, and a flexible printed circuit board 26. The NTC thermistor sensor 21 and the reflective blood oxygen sensor 22 are integrated on the flexible printed circuit board 26 and are connected to the microprocessor 23. The microprocessor 23 is connected to the Bluetooth module 24, and the battery module 25 provides electrical energy for the entire temperature and blood oxygen patch.

[0034] Specifically,

[0035] I. Structural design:

[0036] Patch body: The main body is made of medical-grade liquid silicone material through an injection molding process. This silicone has excellent softness, biocompatibility, and flexibility, with a thickness controlled at 1-2 mm, and the area is designed to be 3-5 cm according to the requirements of different monitoring sites 2 , which can closely adhere to the skin, reduce the sense of foreign body and discomfort, and the surface has been treated with micro-nano hydrophilic treatment to improve the stability and comfort of skin adhesion.

[0037] Sensor Module: A high-precision thermistor and a reflective blood oxygen sensor are integrated on a flexible printed circuit board (FPCB) at the center of the patch through a special encapsulation process. The FPCB has good flexibility and electrical performance, which can effectively reduce signal transmission interference. The surface of the sensor in contact with the skin is covered with a ultra-thin biocompatible protective film, which can not only ensure the accurate perception of skin signals by the sensor, but also prevent skin allergies and infections.

[0038] Battery Module: A CR2032 button battery is selected as the power source and connected to the circuit through metal spring pieces for easy replacement. The battery is installed on one side of the patch and adopts an independent battery compartment design. The battery compartment cover is fixed to the main body by a buckle to ensure the stability of the battery and convenient replacement. In the low-power mode, the battery life can reach 7 - 10 days.

[0039] Protective Layer: A medical-grade transparent polyurethane film (equipped with a small pull ring) is covered on the outer layer of the patch and fixed by a special medical pressure-sensitive adhesive. The thickness of the film is 0.05mm, which has good waterproof, dustproof and antibacterial properties, and at the same time has high transparency and breathability, does not affect the light transmission and signal acquisition of the sensor, and can effectively protect the internal components from the external environment.

[0040] II. Functional Design:

[0041] Precise Temperature Measurement: A high-precision NTC thermistor sensor is selected. Based on the negative temperature coefficient characteristic, it can quickly convert the temperature change into a resistance value change. The resistance change is converted into a voltage signal through a Wheatstone bridge, and then amplified by a high-precision operational amplifier. Cooperating with a 16-bit A / D converter, it can achieve precise measurement of the temperature in the range of 32°C - 42°C with an accuracy of ±0.1°C. The built-in microprocessor collects and stores temperature data at a frequency of once every 30 seconds. Through the built-in temperature trend analysis algorithm, the temperature data at multiple consecutive time points are compared and analyzed. Once an abnormal temperature fluctuation is found, the warning mechanism is immediately triggered.

[0042] Blood Oxygen Monitoring: A reflective blood oxygen sensor is adopted, which integrates a high-brightness infrared light-emitting diode and a high-sensitivity photodetector. During operation, the infrared light-emitting diode emits light of a specific wavelength, which penetrates the skin tissue. The oxygenated hemoglobin and reduced hemoglobin in the blood have different absorption degrees for light of different wavelengths. The reflected light is received by the photodetector and converted into an electrical signal. After filtering, amplification and other processing, the microprocessor calculates the blood oxygen saturation according to the Lambert-Beer law through a complex algorithm. The measurement range is 70% - 100%, and the accuracy is ±2%. The data is also collected once every 30 seconds and compared with the normal blood oxygen range, and an alarm is issued when abnormal.

[0043] Data Transmission and Analysis: It is built with a Bluetooth Low Energy (BLE) module that complies with the Bluetooth 5.0 standard, enabling stable wireless data transmission to a mobile APP or the hospital's central monitoring system. The microprocessor packs the collected temperature and blood oxygen data in a specific data format and sends it to the Bluetooth module. The supporting mobile APP is developed using a cross-platform development framework such as React Native, with a friendly user interface that can display real-time monitoring data and historical data curves, facilitating viewing by patients and medical staff. The APP also has a built-in intelligent analysis engine that uses machine learning algorithms to deeply analyze historical data, predict potential risks, and promptly push warning messages to relevant personnel. The hospital's central monitoring system can receive the monitoring data of multiple patients simultaneously, enabling centralized management and remote monitoring.

[0044] During specific use,

[0045] S1: Preoperative Preparation

[0046] Medical staff check the appearance and battery level of the temperature and blood oxygen patch before the end of the operation.

[0047] S2: Pasting Location

[0048] Clean and level the skin near the flap transplantation area or finger replantation site, disinfect it with alcohol, and after drying, remove the protective layer of the patch and paste it with the center aligned to the monitoring site and press firmly.

[0049] S3: Data Monitoring

[0050] After the patient returns to the ward, the nurse connects to the patch through the mobile APP or the central monitoring system to receive data. During the hospitalization period, medical staff pay attention at any time. Discharged patients can view the data through the APP and regularly feedback to the doctor.

[0051] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the purpose of the present invention, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A temperature measurement and blood oxygen patch for use after flap transplantation and finger replantation, characterized in that: From the outer layer to the inner layer, it includes a protective isolation layer, a functional integration layer and a bonding layer; The functional integration layer includes an NTC thermistor sensor, a reflective blood oxygen sensor, a microprocessor, a Bluetooth module, a battery module and a flexible printed circuit board. The NTC thermistor sensor and the reflective blood oxygen sensor are integrated on the flexible printed circuit board and connected to the microprocessor. The microprocessor is connected to the Bluetooth module. The battery module provides power for the entire temperature measurement and blood oxygen patch.

2. The temperature and blood oxygen patch for use after skin flap transplantation and finger replantation according to claim 1, wherein: The main body for temperature and blood oxygen measurement is made of medical-grade liquid silicone material, manufactured by injection molding process, with a thickness of 1-2 mm and an area designed to be 3-5 cm according to the requirements of different monitoring sites. 2 Its surface is treated with micro-nano hydrophilic treatment to improve the stability and comfort of skin adhesion.

3. The temperature and blood oxygen patch for use after skin flap transplantation and finger replantation according to claim 1, wherein: The NTC thermistor sensor and the reflective blood oxygen sensor are integrated on a flexible printed circuit board at the center of the patch through a packaging process, and the surface of the sensor in contact with the skin is covered with an ultra-thin biocompatible protective film.

4. A temperature and blood oxygen patch for use after skin flap transplantation and finger replantation according to claim 1, characterized in that: The reflective blood oxygen sensor integrates an infrared light emitting diode and a photodetector.

5. A temperature and blood oxygen patch for use after skin flap transplantation and finger replantation according to claim 1, characterized in that: The battery module uses a CR2032 button battery as a power source, is connected to the circuit through a metal spring, is installed on one side of the patch, and adopts an independent battery compartment design. The battery compartment cover is fixed to the patch by a buckle.

6. The temperature and blood oxygen patch for use after skin flap transplantation and finger replantation according to claim 1, wherein: The protective isolation layer is covered with a layer of medical-grade transparent polyurethane film, which is fixed by medical pressure-sensitive adhesive, has a thickness of 0.05 mm, and is equipped with a small pull ring.

7. A temperature and blood oxygen patch for use after skin flap transplantation and finger replantation according to claim 1, characterized in that: The accompanying mobile phone APP adopts a cross-platform framework developed by React Native to perform wireless data transmission with the Bluetooth module.

8. A temperature measurement and blood oxygen patch for use after flap transplantation and finger replantation according to any one of claims 1 to 7, characterized in that: The method of using the temperature measurement and blood oxygen patch includes: S1: Preoperative preparation Medical staff check the appearance and power of the temperature and blood oxygen patch before the end of the operation; S2: Paste location Clean and smooth the skin near the flap transplantation area or the replantation site of the severed finger, disinfect it with alcohol, peel off the patch protective layer after it dries, align the center with the monitoring site, and press it tightly; S3: Data Monitoring After the patient returns to the ward, the nurse connects the patch to receive data through a mobile phone APP or the central monitoring system. Medical staff can pay attention at any time during hospitalization. Discharged patients can check the data through the APP and provide regular feedback to the doctor.

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