7 results about "Free flap" patented technology

The application discloses a kind of free skin flap postoperative nursing scheme evaluation and early warning method based on multi-modal monitoring data fusion, it is related to intelligent medical care technical field, for solving the problem that existing monitoring cannot distinguish vascular pathological crisis and nursing environment interference.First, a multi-dimensional time-varying state matrix containing physiological drive and nursing environment characteristics is constructed, realizing the time sequence alignment of heterogeneous data;Subsequently, the pressure-flow conduction characteristics are analyzed, and the blood flow conduction efficiency index reflecting the inherent patency of blood vessels is extracted;At the same time, a physical gain mapping is established based on nursing parameters, and the theoretical target perfusion trajectory under the current nursing state is deduced;Finally, the dynamic residual vector is calculated and combined with the conduction efficiency index for joint determination, accurately identifying vascular structural occlusion and functional inhibition of nursing program, achieving accurate tracing of postoperative crisis and dynamic evaluation of nursing program.

This invention relates to the field of medical device technology, and more particularly to an intelligent probe patch for monitoring blood circulation in microscopic free flaps, comprising: a disposable probe patch configured to be attached to the surface or edge of the free flap; a biocompatible adhesive layer is provided on the bottom surface of the flexible base of the disposable probe patch, and an auxiliary structure is provided on the top of the flexible base to resist postoperative tissue activity or secretions; the disposable probe patch integrates an optical sensing unit and a temperature sensing unit for collecting local blood oxygen saturation, pulse rate, and surface temperature of the flap, respectively; a repeater, establishing non-contact near-field coupling with the disposable probe patch, the repeater being configured to provide working power to the disposable probe patch through near-field coupling, enabling it to operate without a built-in battery; and synchronously receiving physiological parameter data reflecting the local microcirculation status of the flap collected by the disposable probe patch; and a terminal device, wirelessly connected to the repeater, receiving and processing the physiological parameter data.

The application discloses a kind of local tissue oxygen saturation detection systems for postoperative free flap, including front-end flexible detection module and rear-end signal processing module;Front-end flexible detection module includes the flexible packaging layer of flexible material and the interface layer of being arranged on packaging layer, the material of interface layer is hydrogel mixture, and the detection circuit for being encapsulated in packaging layer is used to detect the blood oxygen saturation of human tissue;Rear-end signal processing module is connected with the front-end flexible detection module, and the rear-end signal processing module processes the signal detected by the front-end flexible detection module, and the local tissue oxygen saturation information is obtained by calculating detection signal.This application is all designed with flexibility, avoids the mechanical damage of detection part to measurement site, so that the sensing part can better adhere to the surface of human skin, improve the accuracy of measurement and the comfort of patient.

The application discloses a kind of free skin flap postoperative nursing scheme evaluation and early warning method based on multi-modal monitoring data fusion, it is related to intelligent medical care technical field, for solving the problem that existing monitoring cannot distinguish vascular pathological crisis and nursing environment interference.First, a multi-dimensional time-varying state matrix containing physiological drive and nursing environment characteristics is constructed, realizing the time sequence alignment of heterogeneous data;Subsequently, the pressure-flow conduction characteristics are analyzed, and the blood flow conduction efficiency index reflecting the inherent patency of blood vessels is extracted;At the same time, a physical gain mapping is established based on nursing parameters, and the theoretical target perfusion trajectory under the current nursing state is deduced;Finally, the dynamic residual vector is calculated and combined with the conduction efficiency index for joint determination, accurately identifying vascular structural occlusion and functional inhibition of nursing program, achieving accurate tracing of postoperative crisis and dynamic evaluation of nursing program.

The present application relates to the technical field of medical information processing, in particular to a kind of free flap grafting wound injury ultrasound evaluation method, comprising: the ultrasound gray scale image obtained is carried out block processing to obtain each enhanced analysis candidate block, block processing helps to improve the contrast of fat area and edema area;By fat feature screening parameter screening obtains several enhanced analysis target blocks, to a certain extent reduce image data analysis amount, improve the efficiency of wound injury ultrasound evaluation;Blood vessel ultrasound frequency shift characteristic value and fat echo factor are combined to determine the fat feature first evaluation value of enhanced analysis target block, and then determine the fat feature second evaluation value of each gray level, which helps to realize the enhancement of fat area differentiation under the condition that probe and wound skin contact is not good, and obtain enhanced ultrasound gray scale image for wound injury ultrasound evaluation with better enhancement effect.

The embodiment of the invention discloses a mammary gland flap dissociation device. The mammary gland flap dissociation device comprises a fixing rod, a handle, a first positioning adjusting mechanism, a pressing piece, a second positioning adjusting mechanism and a scalpel blade. Wherein the handle is connected to the fixing rod. The first positioning adjusting mechanism is arranged on the fixing rod. And the pressing sheet is arranged on the first positioning adjusting mechanism. And a positioning structure is arranged on the pressing sheet. And the second positioning adjusting mechanism is arranged on the fixing rod. And the scalpel blade is mounted on the second positioning and adjusting mechanism. In addition, the scalpel blade is located below the same side of the pressing piece. According to the mammary gland flap dissociation device, the thickness of the dissociated flap can be determined according to the actual situation, heat damage is avoided, the length of the scalpel can be adjusted, and the range of the flap needing to be dissociated can be reached.

The application discloses an intelligent free skin flap vascular crisis monitor, and belongs to the technical field of medical devices.The monitor comprises a signal emission and reception module, which is provided with a red light and infrared light emitter, a reflected light receiver and a multi-modal sensor, and adopts a flexible medical silica gel outer layer with negative pressure adsorption and a built-in micro pressure sensor; a signal sampling and amplification circuit module, which is used for high sampling rate acquisition and two-stage signal amplification; an MCU signal processing module, which is internally provided with a deep learning algorithm, and is used for filtering interference, calculating blood oxygen and comprehensive perfusion index FPI, and identifying crisis types; and a result output module, which is used for displaying data and alarming.The application realizes the advantages of high precision, fast response, small size, portability, intraoperative and bedside use, and compatibility with an electrocardiograph monitor through multi-modal fusion monitoring, self-adaptive fitting and signal compensation, intelligent crisis identification and other technologies, effectively reduces medical costs, and improves the success rate of skin flap transplantation surgery.