Iodine contrast agent exosmosis real-time alarm device

Abstract

The invention relates to the field of medical monitoring equipment, and discloses an iodine contrast agent exosmosis real-time alarm device, which comprises a detection module, an integrated infrared spectrum sensor and / or a biological impedance sensor array, and is used for collecting an analog signal of the iodine concentration and / or impedance change of tissue fluid at an injection part in real time; the signal processing unit digitizes the analog signal and analyzes data to obtain detection values of the iodine concentration and the impedance change rate; and the alarm module triggers a buzzer and an LED to flicker and give an alarm when the detection value exceeds a set threshold value. According to the method, the infrared spectrum and the biological impedance are combined for monitoring the iodine exosmosis for the first time. Multi-modal fusion can improve the core of detection reliability, solves the problem of delay (average delay of 8-12 minutes) of traditional manual observation, and realizes alarm within 5 seconds after exosmosis.

Description

Technical Field

[0001] The present invention relates to the field of medical monitoring equipment, and in particular to a real-time alarm device for extravasation of iodine contrast agents. Background Art

[0002] In recent years, the incidence of iodine contrast agent extravasation has been approximately 0.5%-3%, which can lead to serious complications such as skin necrosis and compartment syndrome.

[0003] Existing monitoring relies on visual inspection by medical staff, which has blind spots such as the back puncture point, and the response delay averages 8-12 minutes; existing equipment such as compression hemostasis devices can only stop bleeding passively and have no active monitoring function. Summary of the Invention

[0004] The main purpose of the present invention is to solve the technical problem of delayed manual observation in the prior art. A real-time alarm device for extravasation of iodine contrast agent comprises: A detection module, integrating an infrared spectrum sensor and / or a bioimpedance sensor array, collects analog signals of iodine concentration and / or impedance changes in tissue fluid at the injection site in real time; The signal processing unit digitizes the analog signal, analyzes the data, and obtains the detection values ​​of iodine concentration and impedance change rate; Alarm module, when the detection value exceeds the set threshold, it triggers the buzzer and LED flashing alarm.

[0005] The external spectrum sensor collects 900-1700 nm spectral data, calculates the 1200 / 1350 nm absorbance ratio after SG smoothing and denoising, and determines whether iodine contrast agent extravasation occurs based on the absorbance ratio.

[0006] The bioimpedance sensor array injects current with a constant current source; measures tissue voltage and calculates impedance modulus |Z|; and determines whether iodine contrast agent extravasation occurs based on the duration of the change in impedance modulus |Z|.

[0007] A second aspect of the present invention provides a real-time alarm system for iodine contrast agent extravasation, comprising: Real-time acquisition of analog signals of iodine concentration and / or impedance changes in tissue fluid at the injection site; Digitize the analog signal, analyze the data, and obtain the detection values ​​of iodine concentration and impedance change rate; When the detection value exceeds the set threshold, the buzzer and LED flashing alarm will be triggered.

[0008] The third aspect of the present application provides an electronic device, comprising: a memory and at least one processor, the memory having instructions stored therein, and the memory and the at least one processor being interconnected by a line; the at least one processor invoking the instructions in the memory to enable the electronic device to perform the iodine contrast agent extravasation real-time alarm device as described above.

[0009] The fourth aspect of the present application provides a computer-readable storage medium having instructions stored therein, which, when executed on a computer, cause the computer to perform the iodine contrast agent extravasation real-time alarm device as described above.

[0010] The present application has the following beneficial effects: The present application initiatively combines infrared spectroscopy and bioimpedance for iodine extravasation monitoring. Multi-modal fusion can improve the core of detection reliability, solve the problem of traditional manual observation delay (average delay of 8-12 minutes), and realize alarm within 5 seconds after extravasation. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The first flowchart of the iodine contrast agent extravasation real-time alarm method provided by the embodiment of the present application. DETAILED DESCRIPTION

[0012] The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present application and the above-described drawings (if any) are used to distinguish similar objects, and do not necessarily have to be used to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" or "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0013] For the sake of understanding, the specific flow of the embodiment of the present application is described below, please refer to Figure 1 The first embodiment of the iodine contrast agent extravasation real-time alarm method in the embodiment of the present application comprises: Real-time acquisition of analog signals of iodine concentration and / or impedance change of tissue fluid at the injection site; Digitize the analog signal, analyze the data, and obtain the detection value of the iodine concentration and the impedance change rate; Trigger the buzzer and LED flicker alarm when the detection value exceeds the set threshold.

[0014] The external spectrum sensor collects 900-1700 nm spectral data, calculates the 1200 / 1350 nm absorbance ratio after SG smoothing and denoising, and determines whether iodine contrast agent extravasation occurs based on the absorbance ratio.

[0015] The bioimpedance sensor array injects current with a constant current source; measures tissue voltage and calculates impedance modulus |Z|; and determines whether iodine contrast agent extravasation occurs based on the duration of the change in impedance modulus |Z|.

[0016] Multimodal sensor fusion improves detection reliability: This invention simultaneously or selectively integrates infrared spectroscopy and bioimpedance sensing technologies to monitor tissue changes at different physical / chemical levels. It utilizes a specific wavelength band (900-1700nm) and a specific algorithm (1200 / 1350nm absorbance ratio). This wavelength band encompasses the characteristic absorption peaks of iodine contrast agents (caused by iodine itself or solvents / physiological changes). Calculating the absorbance ratio rather than a single wavelength better offsets background interference (tissue thickness, pigment differences, light source fluctuations), thereby increasing the specific sensitivity of detecting changes in iodine concentration.

[0017] This invention emphasizes the duration of the impedance modulus |Z| change as the basis for judgment, rather than simply looking at the impedance change. This is because the injection itself, slight patient movement, and other factors can cause transient impedance fluctuations. Only a sustained impedance drop (usually caused by tissue edema or fluid accumulation) is a more robust indicator of extravasation. Using an array can provide spatial information, potentially helping to localize the extent of extravasation.

[0018] Existing technologies may have limitations with single sensors (e.g., spectral sensitivity is affected by skin pigmentation and lighting conditions; impedance is affected by contact pressure and tissue type). Simultaneously monitoring iodine concentration (chemical information) and the rate / duration of impedance change (physical / structural information), and performing comprehensive analysis, can significantly reduce false alarms and missed alarms, improving alarm reliability. For example, a sustained decrease in impedance may indicate fluid extravasation, but spectral confirmation of a high iodine concentration in the fluid confirms that it is extravasation of contrast agent rather than another fluid (e.g., saline).

[0019] The above describes the iodine contrast agent extravasation real-time alarm device in the embodiment of the present invention. The following describes the iodine contrast agent extravasation real-time alarm device in the embodiment of the present invention: A detection module, integrating an infrared spectrum sensor and / or a bioimpedance sensor array, collects analog signals of iodine concentration and / or impedance changes in tissue fluid at the injection site in real time; The signal processing unit digitizes the analog signal, analyzes the data, and obtains the detection values ​​of iodine concentration and impedance change rate; Alarm module, when the detection value exceeds the set threshold, it triggers the buzzer and LED flashing alarm.

[0020] The outer spectrum sensor collects 900-1700 nm spectrum data, calculates 1200 / 1350 nm absorbance ratio after SG smoothing denoising, and judges whether iodine contrast agent extravasation occurs according to the absorbance ratio.

[0021] The biological impedance sensor array injects current with a constant current source; measures tissue voltage, calculates impedance modulus |Z|, and judges whether iodine contrast agent extravasation occurs according to the duration of impedance modulus |Z| change.

[0022] The above examples are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that the technical solutions recorded in the foregoing examples can be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A real-time alarm device for iodine contrast agent extravasation, characterized in that: include: A detection module, integrating an infrared spectrum sensor and / or a bioimpedance sensor array, collects analog signals of iodine concentration and / or impedance changes in tissue fluid at the injection site in real time; The signal processing unit digitizes the analog signal, analyzes the data, and obtains the detection values ​​of iodine concentration and impedance change rate; Alarm module, when the detection value exceeds the set threshold, it triggers the buzzer and LED flashing alarm.

2. The iodine contrast agent extravasation real-time alarm device according to claim 1, characterized in that: The external spectrum sensor collects 900-1700 nm spectral data, calculates the 1200 / 1350 nm absorbance ratio after SG smoothing and denoising, and determines whether iodine contrast agent extravasation occurs based on the absorbance ratio.

3. The iodine contrast agent extravasation real-time alarm device according to claim 1, characterized in that: The bioimpedance sensor array injects current with a constant current source; measures tissue voltage and calculates impedance modulus |Z|; and determines whether iodine contrast agent extravasation occurs based on the duration of the change in impedance modulus |Z|.

4. A real-time alarm method for extravasation of iodine contrast agents, characterized in that: The method comprises: Real-time acquisition of analog signals of iodine concentration and / or impedance changes in tissue fluid at the injection site; Digitize the analog signal, analyze the data, and obtain the detection values ​​of iodine concentration and impedance change rate; When the detection value exceeds the set threshold, the buzzer and LED flashing alarm will be triggered.

5. The method for real-time alarm of iodine contrast agent extravasation according to claim 1, characterized in that: The external spectrum sensor collects 900-1700 nm spectral data, calculates the 1200 / 1350 nm absorbance ratio after SG smoothing and denoising, and determines whether iodine contrast agent extravasation occurs based on the absorbance ratio.

6. The method for real-time alarm of iodine contrast agent extravasation according to claim 1, characterized in that: The bioimpedance sensor array injects current with a constant current source; measures tissue voltage and calculates impedance modulus |Z|; and determines whether iodine contrast agent extravasation occurs based on the duration of the change in impedance modulus |Z|.

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