Device promoting venous return of lower limbs of patient

Abstract

The invention relates to a device promoting venous return of lower limbs of a patient. The device comprises a pressure resistance housing in the shape of a sleeve, an omega-shaped sac body and an airtight mechanism, wherein the pressure resistance housing consists of two hinged U-shaped modules; the omega-shaped sac body is adhered to the pressure resistance housing; an inlet and an outlet are respectively formed in positions adjacent to two ends of the sac body; the airtight mechanism comprises two sealing strips, two omega-shaped inserting rings and two elastic rings which can tightly sleevelegs. The device disclosed by the invention is especially applied to a patient being not smooth in venous return of lower limbs and staying in the bed for a long term; after the device sleeves the legs of the patient, a sealed space is formed between the whole device and the legs; and gas or liquid is inflated and deflated, so that the sac body is inflated or contracted, positive pressure stimulation and negative pressure stimulation can be performed on the legs, and the application is safe and comfortable.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a device for promoting the venous return of a patient's lower limbs. Background technique [0002] Because of various reasons, patients who have been bedridden for a long time have a high risk of lower extremity venous thrombosis. Once lower extremity venous thrombosis forms, poor perfusion of the lower extremities may occur. In severe cases, gangrene may occur, leading to amputation or even death. Pulmonary embolism, in part, can also lead to cerebral vascular embolism through abnormal channels between the original atrium or ventricle of the patient, and the clinical prognosis is extremely poor. [0003] At its root, venous thrombosis of the lower extremities is, on the one hand, a hypercoagulable state that may exist in the patient, which can be resolved by oral anticoagulant drugs; on the other hand, it is more critical that the lower extremity venous muscle pump funct...

AI Technical Summary

Problems solved by technology

[0004] Existing devices for promoting venous return mainly fall into two categories: simple external pressure or lower limb nerve stimulation. The former simulates the function of a muscle pump by simply squeezing the leg muscles, especially the calf muscles, but only for positive pressure-baseline cycles. Pressure has a limited effect on blood return, and long-term positive pressure alone has the risk of damaging veins; the latter uses percutaneous electrical stimulation of lower limb nerves to induce calf muscle contraction, which will bring discomfort to patients on the one hand, and on the other. On the one hand, long-term chronic irritation has the risk of causing local skin and deep nerve damage

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