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This invention provides a statistical method and system for network alarm association rule mining and fault location. The method preprocesses network alarm data to remove frequently occurring jitter alarms and reduce data redundancy. It then scans the processed alarm data, calculates the number of alarm types, and establishes a timing matrix and a counting matrix. The method further scans the alarm data and processes it in segments using a sliding time window method, including processing alarms within the time window based on their alarm codes, occurrence times, and corresponding records in the timing matrix. Finally, it calculates the support and confidence of the corresponding alarm association rules based on the alarm co-occurrence frequency information in the counting matrix, thus obtaining and outputting association rules through alarm data processing. This invention effectively processes network alarm data while considering both operational efficiency and accuracy, thereby achieving more efficient and accurate network fault location.

This utility model relates to a deep vein catheter fixation patch, comprising a fixation patch body that can adhere to the skin at the puncture site. An opening for the catheter to pass through is provided on the fixation patch body. A puncture site disinfection pad surrounds the edge of the opening and contacts the skin at the puncture site. The first tip of the catheter passes through the opening and is fixed to the outer surface of the fixation patch body. A heat-sealing film covers the outer wall of the catheter. A second tip of the catheter is fixed to the outer surface of the fixation patch body. The puncture site disinfection pad surrounds the edge of the opening and directly contacts the skin at the puncture site. This continuously disinfects and sterilizes the skin around the puncture site, effectively inhibiting microbial growth. It can fill any gaps that may exist between the catheter and the skin, blocking the pathway for microorganisms to enter the body. The heat-sealing film covering the outer wall of the catheter forms a physical barrier, reducing contact between external microorganisms and the catheter, and preventing microorganisms from spreading along the outer wall of the catheter to the puncture site.