6 results about "Dye injection" patented technology

The application is suitable for the technical field of human body examination, and provides a medical endoscope fluorescence camera system, which comprises a fluorescent dye injection unit for guiding fluorescent dye to a target area, wherein the fluorescent dye generates specific fluorescent signals in the diseased tissue of the target area, the fluorescent dye is a chemical substance with target area lesion recognition capability, and the fluorescent dye generates fluorescent signals of specific wavelengths under specific excitation light irradiation under the metabolism or biological response of the target area, so as to detect canceration characteristics; the system further comprises an endoscope camera unit; the system effectively solves the segmentation problem of fluorescent images in different areas through adaptive partition threshold segmentation of a signal intensity analysis unit, image definition analysis and an Otsu method, and improves the recognition accuracy of the diseased area. A display device combines a graphical user interface to provide intuitive operation, helps doctors to analyze the lesion in real time, and achieves the purpose of improving the accuracy and efficiency of target area lesion diagnosis.

The invention relates to the field of medicine, and discloses a manufacturing method of a 3D printing liver cancer resection operation guide plate, which comprises the following steps: CT data acquisition: performing liver enhanced scanning to obtain multi-stage DICOM format data; a liver resection range is planned and a surgical section is determined by applying 3D visualization software on the basis of a portal vein 4-level branch drainage basin; 3-matic Medial and other engineering software are applied, and the liver surface and parenchyma inner operation guide plate is designed based on the operation section; a 3D printer is used for printing the digital operation guide plate into a physical model for operation positioning and navigation. Traditional liver cancer operation planning is established on the basis of a standard liver segmentation method and is lack of individuation. At present, the problems of complicated operation, low success rate, poor repeatability and the like exist when a liver pedicle blocking method and a dye injection method are mainly applied to surgical path navigation. The invention relates to a manufacturing method of a 3D printing liver cancer resection operation guide plate. Scientific planning and accurate navigation of an operation are realized through a 3D digital technology. Through the technical method, the radical treatment and safety of an operation are improved, and the liver cancer treatment effect is improved.

The application relates to the technical field of textile printing and dyeing, and discloses a waterless printing and dyeing process intelligent control method and system.The method comprises the following steps: collecting dye dispersion and fabric fiber density data in a waterless medium, and generating an initial concentration distribution map; inputting a convolutional neural network to identify concentration instability regions and local deviation values; if the deviation exceeds a preset threshold, iteratively optimizing dye injection parameters to obtain an optimized concentration distribution map; segmenting the regions and extracting dye penetration path vectors of high fiber density regions; determining regional adsorption adjustment coefficients through a support vector machine; updating the parameters to obtain a dynamic concentration regulation sequence; iteratively optimizing the final uniform coloring distribution through coloring simulation; and extracting quality indicators to optimize process parameters and determine a production compatibility scheme.The application solves the problem of uneven dye dispersion through multi-dimensional data fusion and intelligent algorithm regulation, and improves coloring uniformity, process stability and production compatibility.

This invention concerns asystem for performing organ tissue perfusion assessment and for detecting and / or assessing the risk for a possible post-operative organ leakage, said system comprising at least i) a pressurization module configured to increase pressure inside a target organ in a body cavity, ii) pressure sensor means configured to measure pressure in the target organ and possibly in the body cavity, iii) possibly a dye injection means to introduce dye to the organ though intravenous injection or other means, and iiii) image capturing and processing means comprising a processing unit configured to process captured images of the target organ at different phases or values of pressurization of the target organ, wherein the image processing unit is configured to provide a quantity of perfusion at the organ, possibly at an anastomotic or resection line or site of said organ, by comparing differences in image characteristics of the target organ and correlating them with sensed pressures of said organ, and possibly also with sensed pressure differentials between the target organ and the body cavity.

The invention discloses a mammary gland calcification focus dye positioning method and a dye positioning needle, and relates to the technical field of medical instruments.The dye positioning needle is used for being installed on a three-dimensional positioning arm of a molybdenum target host and comprises a needle cylinder, dye is contained in the needle cylinder, one end of the needle cylinder is provided with a liquid outlet end, and a piston is further arranged in the needle cylinder in a sliding mode; the piston is configured to drive the dye to be discharged from the liquid outlet end during sliding; the needle head comprises a base part and a needle tube, the base part is detachably mounted at the liquid outlet end of the needle cylinder, and the needle tube is used for guiding the dye discharged from the liquid outlet end to be injected into the breast so as to mark and position boundary dyeing of a breast focus. The dye positioning needle injects dye into the four boundaries of the innermost side, the outermost side, the uppermost end and the lowermost end of the mammary gland calcification focus under the guidance of the molybdenum target machine positioning system, and dye marking positioning is achieved. And meanwhile, dye mark positioning of the four boundaries is combined with center point positioning of the metal guide wire, so that crossed three-dimensional boundary positioning can be realized.

To provide a dye injection device capable of uniformly absorbing a dye into a yarn.SOLUTION: A lower base 1 and an upper base 2 are provided, a plurality of passages 3 through which yarns to be dyed respectively pass are defined between the lower base 1 and the upper base 2, a plurality of first downstream passages 14 extending from a pipe set of a dye dispensing device to the passages 3 are formed in the lower base 1, and a plurality of first upstream passages 44 extending from the pipe set of the dye dispensing device to the passages 3 are formed in the upper base 2.SELECTED DRAWING: Figure 5