4 results about "Doppler flow" patented technology

The present application belongs to the technical field of anatomical hemodynamic data processing, and relates to a VTE dynamic early warning method and system based on anatomical hemodynamic coupling; the present application synchronously collects ultrasonic structure images and Doppler blood flow signals, extracts time-varying vorticity features and key anatomical constraint sets, generates an expected blood flow atlas by using a fluid dynamics simulation model, compares in real time to monitor continuous deviation events, and traces back to analyze to generate root cause candidate points; the system further constructs a dynamic risk field and a dynamic root cause field, which are updated in correlation to form a dynamic coupling field, realizing continuous and individualized tracking of the health status of blood vessels; finally, according to the dynamic coupling field situation, graded early warning data containing early warning state levels, risk visualization and traceability prompts are output; the present application improves the timeliness and diagnosis direction of early warning, and provides precise and dynamic risk assessment and decision support for clinical use.

This utility model discloses a flow metering device for pipe corridors, relating to the field of pipe corridor flow metering technology. It includes a fixed plate connected to the inner wall of the corridor, a fixed ring mounted on the fixed plate, and a Doppler flow meter positioned on the fixed ring. A transmission line is located at the rear end of the Doppler flow meter and connected to a processor. A quick-release mechanism is provided between the fixed ring and the fixed plate. The quick-release mechanism includes a fixed sleeve fixedly connected to the surface of the fixed ring. By pressing a button, the button drives the guide sleeve to move, which in turn drives the guide block to move through a guide groove. The guide block drives the sliding column to rotate, and the sliding column adjusts the locking block to unlock or lock, facilitating quick installation of the fixed ring. The button is embedded in the fixed sleeve, effectively reducing direct water erosion. The use of the locking block and fixed seat for easy fixing avoids structural damage caused by water erosion and extends service life.

This invention relates to the field of medical device technology and discloses a multi-dimensional biomimetic experimental device for whole-body vascular interventional shunt stents, comprising a mobile platform and a multi-dimensional detection matrix: a stent plate is fixedly connected to one side of the mobile platform, a stent rod is fixedly connected to the outside of the stent plate, a main trunk segment is provided inside the stent rod, and multiple lateral trunk segments are provided outside the main trunk segment; a reservoir, a peristaltic pump, and a pressure control valve are fixedly connected to the outside of the stent plate; a disassembly component one is provided at one end of the main trunk segment, and a disassembly component two is provided at one end of each lateral trunk segment or branch segment; the multi-dimensional detection matrix includes a miniature pressure sensor, an ultrasonic Doppler blood flow velocity measurement module, and a particle image velocity measurement system. Through the main trunk segment, lateral trunk segment, and branch segment, combined with the rapid sealing and snapping of modular disassembly components one and two, high-precision biomimetic simulation of the vascular bed in different parts of the human body is achieved.

This application relates to a blood flow parameter measurement device, equipment, storage medium, ultrasound probe, and system, belonging to the field of medical devices. The blood flow parameter measurement device includes: a first acquisition module for acquiring first measurement parameters obtained by a first transducer group in imaging mode; a second acquisition module for acquiring second measurement parameters obtained by a second transducer group in imaging mode or Doppler blood flow detection mode; both the first and second measurement parameters include vessel location, vessel depth, vessel diameter, and Doppler angle; a correction module for combining and calculating the first and second measurement parameters to correct the vessel diameter and Doppler angle; and a monitoring module for monitoring the hemodynamic parameters of the target object based on the corrected vessel diameter and Doppler angle. The technical solution of this application can output stable hemodynamic evaluation results.