3 results about "Central venous pressure" patented technology

The application provides a central venous pressure monitoring horizontal positioning assembly, relates to the technical field of medical devices, and is used for improving the accuracy and reliability of measurement results. The central venous pressure monitoring horizontal positioning assembly comprises a transfusion rod, a locking piece, a support frame and a horizontal positioner. The transfusion rod comprises a rod body, a base and a plurality of rollers. The top end of the rod body is provided with a hook for hanging a transfusion bag. The base is arranged at the bottom end of the rod body. The plurality of rollers are arranged on the surface of the base away from the rod body. The locking piece is detachably connected with the rod body. The support frame is connected with one end of the locking piece. The support frame has a containing groove with a first opening and a second opening. The horizontal positioner is arranged in the containing groove. The horizontal positioner is provided with an infrared level meter. The light outlet end of the infrared level meter is opposite to the first opening. The connecting piece is connected with the horizontal positioner and opposite to the second opening. The connecting piece is provided with a clamping groove for clamping a pressure sensor.

This invention discloses a parameter identification method for a lumped parameter model of systemic circulation, belonging to the field of lumped parameter model technology. The method includes: constructing the state equation of the lumped parameter model of systemic circulation based on Kirchhoff's voltage and current laws to obtain the systemic circulation control equation; calculating the duration ratio of systolic to diastolic phases and stroke volume based on routine clinical measurement data, constructing classic aortic pressure and flow waveforms, and performing registration processing; calculating central venous pressure and flow based on routine clinical measurement data; and using the registered aortic inlet pressure and flow, central venous pressure and flow, and systemic circulation control equations to calculate the values ​​of each parameter in the parameter model. This invention, by periodically stretching the classic reference waveform, matches the waveform extreme values ​​with the patient's measured blood pressure and cardiac output, indirectly reconstructing the aortic inlet pressure and flow curve reflecting individual characteristics under non-invasive conditions, significantly improving the model's individualization and clinical compatibility.

The invention relates to the field of biomedical engineering technology and information processing, and discloses a trend prediction method and system based on multi-physiological signal fusion, a terminal and a storage medium, and the method comprises the steps: obtaining a venous pressure analog signal collected by a sensor or a radar, and carrying out the automatic calibration and digital processing of the venous pressure analog signal, obtaining central venous pressure data; processing the central venous pressure data based on a waveform feature automatic deconstruction algorithm to obtain hemodynamic feature parameters; and predicting the hemodynamic characteristic parameters according to a preset clinical knowledge rule to obtain clinical decision prompt information. According to the central venous pressure monitoring system and method, intelligent analysis and fusion prediction are conducted on the continuously-collected venous pressure signals, hierarchical clinical decision prompt information is obtained, and the automation, continuity and clinical decision support capacity of central venous pressure monitoring are greatly improved.