4 results about "Brachial artery" patented technology

This invention discloses a non-invasive method for estimating central aortic pressure (PWV) driven by a vascular tree network, relating to the field of cardiovascular hemodynamic modeling. The method includes: collecting clinical data and scaling the vessel length and reference area; calculating the flow waveforms of the aorta and its branches based on the 4D-Flow MRI velocity field to determine the blood flow distribution ratio; constructing an eight-branch vascular tree network model based on the pressure propagation path from the aorta to the brachial artery; selecting a section on the descending aorta's central axis to calculate the flow waveform and inversely calculating PWV; constructing a dataset using sensitivity analysis and one-dimensional positive problem simulation to pre-train the neural network; performing PINN patient-specific fine-tuning on the model; extracting the aortic pressure waveform using the fine-tuned model, calculating the central aortic pressure value, and outputting patient-specific parameters and distribution results. The input waveform constructed based on non-invasive clinical data in this invention can adapt to different patient-specific differences, significantly improving the model's individualization and clinical compatibility.

The utility model discloses a kind of pneumatic-tyre type brachial artery hemostasis compressor, comprising: air cushion, it is rectangular structure when flattening, for covering the upper arm and lower arm area of patient's arm, and the middle area of air cushion is equipped with compression part corresponding brachial artery position;Connecting belt, along the circumferential direction of air cushion, is fixed to the side edge of air cushion;Pressing air bag, communicate with air cushion by air pipe, for inflating into air cushion to make compression part extrude brachial artery;Pressure gauge, set on air cushion surface, for real-time monitoring air cushion internal pressure;Air valve, set between air pipe and pressing air bag, for control after inflating air cushion pressure retention;Wherein, after inflating air cushion is compressed brachial artery by upper and lower arm covering, and connecting belt is fixed after circumferential circumferential around of arm, limit elbow joint bending.The utility model can avoid elbow joint bending, make arm keep fixed posture, compression part accurate corresponding brachial artery point when inflating.

The application relates to a data collection method and device, computer equipment and a computer readable storage medium. The method comprises the following steps: in response to a timer interrupt instruction, entering a timer interrupt program, starting a clock counter and recording an initial count value; in the timer interrupt program, starting an electrocardiogram measurement module, a heart sound measurement module and a blood pressure measurement module according to a preset order according to preset assembly instructions, and measuring state data corresponding to a user; when the current count value of the clock counter reaches a threshold value, closing the electrocardiogram measurement module, the heart sound measurement module and the blood pressure measurement module according to the preset order based on the corresponding assembly instructions to obtain a target data set; based on the initial count value and the current count value, a data collection duration is obtained, and based on the target data set and the data collection duration, target state data is obtained. The method can realize high-precision synchronous collection of electrocardiogram data, heart sound data and brachial artery pressure data.

The utility model discloses a brachial artery hemostat with air bag, including the clamping plate, the tourniquet and the fixed band of connection on the clamping plate, the clamping plate has the arc shape of bionic human body arm appearance's arc support surface, is provided with air bag pad on the arc support surface, is provided with a plurality of through air holes on air bag pad, the tourniquet is movably connected on the clamping plate, is provided with silica gel pressure block on the tourniquet. The arc support surface of bionic human body arm appearance on the clamp can better support the shape of patient's arm, improve arm stress uniformity, the elastic soft air bag pad on the arc support surface can improve patient comfort, avoid rigid extrusion to patient's arm, a plurality of air holes on air bag pad can guarantee the air permeability of arm skin, the tourniquet of removal setting can adjust position according to the position of patient's wound, and silica gel pressure block can carry out flexible pressing to the wound on arm, avoid the tissue ischemia and injury caused by pressing too much while pressing the wound and carrying out compression hemostasis.