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CN-122005195-A - Accurate eye hot compress method suitable for postoperative patient

CN122005195ACN 122005195 ACN122005195 ACN 122005195ACN-122005195-A

Abstract

The application belongs to the technical field of medical equipment and clinical care, and particularly relates to a precise eye hot compress method suitable for postoperative patients. The application discloses a precise eye hot compress method suitable for postoperative patients, and aims to solve the problems of low temperature control precision, uneven spatial distribution, lack of individual adaptation and insufficient safety protection in the existing hot compress technology. The method is based on an integrated wearable hot compress device and comprises a flexible substrate matched with anatomical morphology, a distributed micro-area heating array, a multi-point temperature sensing network and a central cooperative controller, wherein through multi-mode physiological sensing, dynamic thermal field regulation and closed-loop safety intervention mechanisms, eyelid partition targeted heating in space and self-adaptive regulation according to postoperative stages in time are realized, and triple overheat protection is achieved. The system supports individual parameter input, self-adaptive calibration and remote monitoring, ensures that the hot compress temperature is stabilized in a 38-42 ℃ target interval, and obviously improves the safety, effectiveness and individual suitability of postoperative eye hot compress.

Inventors

  • ZHANG WENWEN
  • FENG YAPING
  • XIE DAOYU

Assignees

  • 杭州师范大学附属医院(杭州市第二人民医院)

Dates

Publication Date
20260512
Application Date
20260310

Claims (10)

  1. 1. The accurate eye hot compress method suitable for postoperative patients is implemented through an integrated wearable hot compress device, and the method comprises a flexible hot compress substrate, a distributed micro-area heating array, a multi-point embedded temperature sensing network and a central cooperative controller, wherein the inner surface profile of the flexible hot compress substrate is matched with the anatomy of an adult eyelid and is divided into an upper eyelid radian area, a lower eyelid bearing area and an outer canthus transition area, the distributed micro-area heating array is embedded into the flexible hot compress substrate in a four-by-four matrix mode through sixteen independently controllable film heating units, four heating units located in the central area of the upper eyelid are set to be reference power density, the other twelve heating units are respectively set to be 65% or 75% of a reference value according to the anatomical positions, the multi-point embedded temperature sensing network comprises eight high-precision digital temperature sensors which are respectively arranged in the center of the upper eyelid, the outer side of the upper eyelid, the center of the lower eyelid, the inner side of the lower eyelid, the outer canthus, the inner canthus, the lower canthus and the upper canthus, the central cooperative controller enables the temperature of the individual to be stable in real-time according to the real-time temperature parameters of the central cooperative controller, and the temperature of the individual is kept stable at the temperature of all real-time at the temperature ranges of the respective target temperature ranges of the real-time at the temperature ranges of the respective heating units of the temperature.
  2. 2. The method according to claim 1, wherein the central cooperative controller operates a physiological state analysis engine, the engine performs sliding window filtering processing on the eight temperature sensor readings and calculates a local temperature rise gradient and an overall heat balance index, and when any local temperature rise gradient exceeds 0.3 ℃ per second or the overall heat balance index exceeds 1.5 ℃, a regional power redistribution subroutine is triggered, and the duty ratio output of the corresponding heating unit is dynamically adjusted according to a preset heat conduction compensation model.
  3. 3. The accurate eye hot compress method according to claim 1, wherein the central cooperative controller adopts a dual-core heterogeneous architecture, a main core executes hot compress strategy scheduling, a cooperative core is special for safety monitoring tasks, the cooperative core polls the highest reading value of a temperature sensor at a fixed period and monitors the states of two independent overheat fuse switches, and when any temperature sensor reading reaches 43 ℃ or any overheat fuse switch is physically disconnected, the cooperative core immediately cuts off all power supplies of heating units and sends an emergency stop interrupt request to the main core.
  4. 4. The accurate eye hot compress method according to claim 1, wherein the individual characteristic parameters of the patient comprise postoperative days, operation type codes, eyelid closure integrity ratings, cornea perception test results and basic body temperature correction values, the parameters are recorded and encrypted to be transmitted to a central cooperative controller through a matched mobile terminal, a postoperative recovery stage mapping table is built in the matched mobile terminal, hot compress intensity grades are automatically matched according to the postoperative days and are divided into three grades, the three grades correspond to an inflammation period, a repair period and a remodelling period respectively, and different target temperature intervals and maximum allowable temperature rise slopes are set for each grade.
  5. 5. The accurate eye compress method according to claim 1, wherein the flexible compress substrate is provided with a micro humidity sensor array on the inner surface thereof, the array is composed of four capacitive humidity sensing elements respectively positioned at the center of the upper eyelid, the center of the lower eyelid, the outer canthus and the inner canthus, and the central cooperative controller determines the stability state of the tear film according to whether the average humidity decreasing rate exceeds 2% relative humidity per minute in five consecutive minutes, automatically prolongs the current compress period for five minutes when determining to decrease, and simultaneously increases the output power of the heating unit of the lower eyelid area by 5%.
  6. 6. The method for precisely compressing the eye hot compress according to claim 1, wherein each thin film heating unit in the distributed micro-area heating array adopts a graphene composite heating film as a core heating material, the thickness is not more than 80 microns, the uniformity error of the surface resistance is less than +/-3%, a snake-shaped conductive path is formed through a laser etching process, each heating unit is connected to a power driving interface of a central cooperative controller through a flexible printed circuit board, the power driving interface comprises sixteen paths of independent MOSFET switching circuits, and each path is provided with a current sampling resistor and an overcurrent protection diode.
  7. 7. The method according to claim 1, wherein the central cooperative controller stores therein a standard eyelid thermal response database containing typical temperature response curves of different age groups, sexes and ethnic groups under the same thermal stimulus, and the system performs an adaptive calibration procedure for two minutes at the initial stage of each hot compress start, obtains the actual thermal response characteristics of the user through a step temperature rise test, corrects the target temperature setting value at the subsequent stage accordingly, and limits the corrected target temperature to a range of 38 ℃ to 42 ℃.
  8. 8. The method according to claim 7, wherein the adaptive calibration procedure includes setting all heating units to 20%, 40%, 60% of the reference duty cycle in sequence and maintaining each for 30 seconds, and last for 60 seconds at 60%, recording each sensor temperature rise curve by the system and performing pearson correlation coefficient matching with the nearest reference curve in the database, and if the correlation coefficient is lower than 0.85, calculating the correction amount Wherein The total number of the components is 0.6, As the steady-state temperature mean value of the reference curve, Is the measured steady state temperature average.
  9. 9. The method for precise eye hot compress according to claim 1, wherein the eight high-precision digital temperature sensors are of the type DS18B20, have a temperature measurement resolution of 0.0625 ℃ and a precision of ±0.5 ℃ and are connected to an analog signal input port of the central cooperative controller by means of independent shielded twisted pair wires, and the sensor package is made of biocompatible epoxy resin and has an outer diameter of not more than 1.5 mm.
  10. 10. The method for precisely compressing the eyes according to claim 1, wherein after the compressing period is finished, the device automatically enters a standby mode and writes an operation record into an internal flash memory, wherein the operation record comprises a time stamp, whole-course data of each sensor, a power adjustment log and an abnormal event mark, and the operation record is uploaded to a cloud server through a wireless communication module and is used for constructing an individual thermal response evolution model to optimize subsequent treatment course parameters.

Description

Accurate eye hot compress method suitable for postoperative patient Technical Field The invention belongs to the technical field of medical equipment and clinical care, and particularly relates to a precise eye hot compress method suitable for postoperative patients. Background In the clinical medicine and rehabilitation nursing field, postoperative eye hot compress is widely applied to the recovery stage after ophthalmic surgery for a long time as a non-invasive auxiliary treatment means, and particularly has obvious value in improving patient comfort and accelerating functional recovery by promoting local blood circulation, relieving tissue edema, accelerating metabolite clearance, improving tear film stability and other multiple physiological effects after meibomian gland dysfunction, xerophthalmia, hordeolum, cataract and other operations. With the popularization of modern minimally invasive ophthalmic surgery technology and the continuous improvement of the postoperative experience requirements of patients, hot compress therapy gradually evolves from traditional empirical nursing measures to the direction of accurate and individual medical intervention, the technical connotation of the hot compress therapy is not limited to simple warm supply, and systematic requirements are provided for temperature control precision, action area specificity, duration rationality and safety guarantee mechanism. The traditional eye hot compress method mainly depends on simple devices such as a hot water bag, a hot towel or a disposable self-heating eyeshade. Such schemes typically employ a constant heat source or coarse temperature control strategy, the core design logic of which is to provide a generally suitable warm environment in order to achieve a basic soothing effect. Specifically, the hot water bag can release heat slowly through the heat capacity of the water body, the temperature of the hot towel is maintained briefly after the hot towel is heated externally, and the chemical self-heating material releases heat through oxidation reaction. These methods are widely accepted in early clinical practice due to their ease of operation and low cost, and meet to some extent the current need for post-operative basic care. However, its technical architecture essentially lacks the differential adaptation capability to the highly sensitive and structurally delicate organ of the eye, more manifesting itself as a generic, low feedback hyperthermia mode. However, with the continuous development of related technologies and the more stringent requirements of application scenarios on performance indexes, the above technical solutions have some inherent characteristics in principle, so that the technical solutions gradually show limitations in coping with new challenges. The root of the method is that the traditional hot compress mode can not effectively coordinate the inherent contradiction between the heat therapy effectiveness and the tissue safety. Ocular tissues, particularly cornea, conjunctiva and eyelid skin, are extremely sensitive to temperature changes, and have narrow tolerance thresholds, and it is generally believed that safe and effective heat application temperatures should be tightly controlled between 38 ℃ and 42 ℃, below which physiological responses are difficult to activate, and above which protein denaturation, corneal epithelial damage and even irreversible thermal burn may occur. The existing simple hot compress device has the defects of rapid temperature decay, uneven spatial distribution, no real-time feedback adjustment and the like. For example, the surface temperature of a hot towel is rapidly reduced to an ineffective zone after the towel contacts the eyes for a few minutes, and the spontaneous heating eyeshade can maintain heat release for a long time, but the initial heating rate is uncontrollable, local hot spots are easy to overrun, and output parameters cannot be dynamically adjusted according to individual differences (such as eyelid thickness, local blood flow state and postoperative inflammation degree). Furthermore, postoperative patients often suffer from eyelid insufficiency, corneal hypoesthesia, or the use of local anesthetics, which significantly reduce the ability to sense and avoid abnormally high temperatures, making conventional "one-shot" fomentation a potentially a significant safety risk in certain high-risk populations. Accordingly, such static, open loop hyperthermia modes are not only difficult to achieve precise physiological regulation targets, but may interfere with wound healing processes due to uneven thermal stress or overheating exposure, even inducing secondary complications. On the basis, although some intelligent hot compress devices attempt to introduce a temperature sensor and a simple feedback loop in recent years, the intelligent hot compress device focuses on the stability of the overall average temperature, neglects the non-uniformity of an eye anatomy structu