9 results about "Postoperative scars" patented technology

The invention discloses a laparoscopic cholecystectomy superfine auxiliary instrument and relates to the technical field of medical instruments, the laparoscopic cholecystectomy superfine auxiliary instrument comprises a handle, a superfine puncture part and a head, the superfine puncture part comprises an outer sleeve and a puncture needle, the two ends of the outer sleeve are connected with the handle and the head respectively, the puncture needle is arranged in the outer sleeve, and the front end of the puncture needle is provided with a puncture tip; the handle controls the puncture needle to slide back and forth so as to control the opening and closing of the head part. According to the scheme, ultramicro-invasive puncture is achieved through the detachable head and the superfine puncture part, firstly, the superfine puncture part can conduct ultramicro-invasive opening on the abdomen of a patient through the puncture tip at the front end of the puncture needle, so that the superfine puncture part enters the abdominal cavity of the patient, and then the superfine puncture part penetrates out of the body of the patient under the guide of a converter of an umbilical laparoscope opening; the head assembly is accurately completed under in-vitro direct vision, then the head assembly is returned to the abdomen of a patient to complete an operation, and under the condition that the opening and closing distance and the clamping force of the head are proper, ultramicro-wound trepanning is completed, postoperative scars are eliminated, and the pain of the patient is relieved.

The application discloses a high-pressure injector for scar hard area injection and belongs to the technical field of medical devices.The application solves the problems that the prior art is difficult to meet the drug delivery requirements of the scar hard area due to unstable propulsion, lacks objective quantitative basis, and is easy to cause uneven drug distribution and poor treatment effect, generates targeted injection parameters suitable for different scar levels by accurately deconstructing the multi-level hardness and thickness of the scar, improves the adaptability of injection data and individual scar characteristics by combining dynamic comparison and benchmark optimization during the injection process, simultaneously predicts the postoperative scar softening progress and drug absorption effect in advance, synchronously builds a multi-grade early warning mechanism, and accurately transmits injection pressure related risks through the differential light signals of warning lights, so that the accuracy and individualization level of scar injection treatment are effectively improved, and the safety and controllability of the injection process are enhanced.

The application provides a photocuring material and an aqueous humor drainage device and a preparation method thereof, and relates to the technical field of medical devices; the photocuring material is composed of an A component, a B component and a photoinitiator I; the A component comprises A1 raw materials and A2 raw materials; the A1 raw materials simultaneously contain an antimetabolite structure, an F element and a mercapto group; the A2 raw materials are mercapto group-containing compounds; the B component comprises B1 raw materials and B2 raw materials; the B1 raw materials are selected from at least one of triallyl isocyanurate, trimethylolpropane triacrylate, ethyl acrylate and 2-phenylethyl methacrylate; and the B2 raw materials are modified gelatin. The mercapto-ene material with good biocompatibility is adopted, the antimetabolite structure and the F element are combined, the postoperative scar formation of a surgical site can be effectively reduced, the photocuring material has good cell adsorption resistance, and the drainage efficiency is improved.

The invention relates to the technical field of deep learning, in particular to an orthopaedic surgery postoperative scar recovery dynamic evaluation system based on deep learning, and the system comprises the steps: obtaining gray images of a dermoscope at different sampling moments, and dividing the gray images to obtain a scar region and a capillary region around the scar; determining a recovery state index according to the area change of the microvessel texture distribution characteristic scar region in the microvessel region; when the hypertrophic scar appears, determining the area and the gray scale of the hypertrophic scar in the scar region, and determining the hyperplasia degree of the hypertrophic scar according to the area characteristic and the gray scale characteristic; and adjusting the recovery state index according to the hyperplasia degrees in the images with different gray levels to obtain a recovery evaluation coefficient, and determining a recovery evaluation result according to the recovery evaluation coefficients at different sampling moments. According to the invention, timely evaluation can be carried out in combination with the overall recovery state and the hyperplasia condition of the pathological scar area, and the accuracy and reliability of the evaluation result of scar recovery are effectively improved.

The invention discloses a nursing dressing for promoting scar healing in nail and breast surgery and a preparation method thereof, and belongs to the technical field of medical dressings. According to the dressing, oxidized sodium hyaluronate, quaternized chitosan, oxidized catechin and zinc sulfate serve as main raw materials, oxidized catechin serves as a multifunctional cross-linking node and is subjected to a Michael addition reaction with a macromolecular chain, stable metal-catechol coordination bonds are formed with zinc ions, Schiff base reaction and ionic cross-linking are cooperated, and the dressing is prepared. And a quadruple dynamic stable network is constructed. The preparation method comprises the steps of raw material solution preparation, step-by-step chemical crosslinking and gel curing forming. The dressing has efficient antibacterial, anti-inflammatory and antioxidant functions, can promote ordered arrangement of collagen and migration of fibroblasts, realizes controlled-release delivery of active ingredients, remarkably inhibits postoperative scar hyperplasia, and is suitable for comprehensive nursing of postoperative wounds of thyroid and breast surgery such as thyroid resection and breast tumor resection.

The utility model discloses an inflation-free trachea cannula which comprises a trachea cannula body and a connector. An inflation-free sleeve bag is arranged at the patient end of the trachea cannula body, a pull rope is connected with the inflation-free sleeve bag after passing through the trachea cannula body so as to be used for controlling contraction of the inflation-free sleeve bag and further achieve expansion of the inflation-free sleeve bag to seal an airway of a patient, and the inflation-free sleeve bag is of a circular truncated cone structure. The utility model can be suitable for patients with different human anatomy structures, and can reduce the operation procedure of inflating the cuff by medical personnel in an operation; the situation that treatment is delayed due to tracheal intubation caused by cuff breakage is reduced; airway mucosa necrosis and postoperative scar stenosis of a patient caused by excessive inflation can be reduced; breathing machine related pneumonia caused by the fact that secretions enter the body of the patient due to too little inflation or wrinkles of the inflation-free cuff can be reduced; the phenomenon that the trachea cannula falls off due to movement of a patient during an operation can be reduced; when secretions or gastric reflux substances enter the airway of the patient, the secretions can be received more easily.

The utility model discloses a minimally invasive postoperative scar tension-reducing antibacterial application, which comprises an elastic breathable bandage, a microneedle base and an injection microneedle, the microneedle base consists of two injection shell seats, the two injection shell seats are arranged in parallel, and the close sides of the two injection shell seats are flexibly connected and fixed; each injection shell seat is hollow inside to form a medicine cavity for filling medicines; the injection microneedles are densely distributed on one side wall of the injection shell seat, and the injection microneedles are hollow to form injection channels; the injection channel is communicated with the medicine cavity, and the injection microneedle pierces the skin of a human body during use; and the elastic breathable bandage covers the outer side of the microneedle base and is used for fixing the microneedle base and the skin of the human body. According to the utility model, the densely-distributed micro needles which can be absorbed by a human body are punctured into the skin, so that when medicines are injected to relieve pain, the surrounding skin is pulled, the tension of a scar area is reduced, the postoperative scar can be effectively treated, and the operation is convenient.

The application discloses a lacrimal passage epithelial organoid and a construction method and application thereof, and the construction method comprises the following steps: S1, preparation of a three-dimensional biomimetic support; S2, acquisition of lacrimal passage epithelial stem cells; and S3, construction and culture of the organoid. The PCL / GEL nanofiber support constructed by the electrospinning technology is combined with Matrigel coating, the extracellular matrix (ECM) microenvironment of the in-vivo lacrimal passage mucosa is successfully simulated, and the technical difficulties that stem cells are prone to aging and differentiation direction disorder in traditional two-dimensional culture are fundamentally solved. This breakthrough result promotes the lacrimal passage tissue engineering from simple 'cell adhesion growth' to a new height of'structure-function synchronous reconstruction', and provides a double technical guarantee of seed cells and tissue engineering supports for solving the clinical core pain point of postoperative scar adhesion and re-occlusion of the lacrimal passage obstruction disease.

The present application relates to the technical field of deep learning, and particularly relates to a kind of dynamic evaluation system of plastic surgery postoperative scar recovery based on deep learning, comprising: the gray image of dermoscope at different sampling moments is obtained, and scar area and microvessel area around scar are obtained by division;According to the area change of microvessel texture distribution feature in microvessel area scar area, determine recovery state index;When hyperplastic scar appears, determine the area and gray scale of hyperplastic scar in scar area, according to area feature and gray scale feature, determine the proliferation degree of hyperplastic scar;According to the proliferation degree in different gray images, adjust the recovery state index, obtain recovery evaluation coefficient, and determine recovery evaluation result according to recovery evaluation coefficient under different sampling moments.The present application can evaluate in time by combining overall recovery state and the proliferation of pathological scar area, effectively improve the accuracy and reliability of the evaluation result of scar recovery.