Lower limb negative pressure device applicable to magnetic resonance imaging

Abstract

The invention provides a lower limb negative pressure device suitable for MR imaging. The lower limb negative pressure device comprises a medical stretcher, a negative pressure device body and a computer control platform. The negative pressure device is provided with a negative pressure cylinder, a negative pressure pump and a ventilation pipeline, and the negative pressure cylinder is installed on the medical stretcher; the negative pressure cylinder is composed of a plurality of connecting rings and a bottom plate, the connecting rings are connected through folding PVC cylinders, the connecting rings and the bottom plate are connected through folding PVC cylinders, the bottom plate is arranged at the rear end of the negative pressure cylinder and fixedly connected with the medical stretcher, and the connecting rings can slide in a telescopic mode along the surface of the medical stretcher. The medical stretcher has the advantages that clinical conventional MR imaging equipment is automatically adapted through the non-magnetic medical stretcher and the automatic telescopic negative pressure cylinder, and when MR imaging is conducted on a subject, practices such as systemic circulation redistribution adjustment, intracranial pressure reduction and heart and brain anti-load training are conducted through negative pressure suction loads controlled by the computer control platform.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a lower limb negative pressure device suitable for magnetic resonance (Magnetic Resonance, MR) imaging. Background technique [0002] Lower body negative pressure (LBNP) is the application of subatmospheric pressure on the lower part of the body to divert systemic blood from the upper body to the lower body. In the process of applying lower body negative pressure, the negative pressure level ranges widely (5mmHg to 100mmHg), and the duration ranges from minutes to hours. The systemic circulation redistribution caused by mild lower body negative pressure can stimulate the sympathetic nervous system to maintain blood pressure stability, Severe lower body negative pressure can cause a decrease in effective circulatory blood volume, resulting in a decrease in cardiac output, insufficient cerebral blood supply, and other shock-like circulatory changes [Campbell et al. Aerosp M...

AI Technical Summary

Problems solved by technology

②At present, the cavity of the mainstream medical imaging system is small and deep, and the environment is noisy. The medical staff may not observe the syncope and hypotension reactions of the subjects in which the negative pressure is applied, and a reliable monitoring system needs to be further established.

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