The problem of immobility of legs leading to a potentially life threatening condition including deep venous thrombosis (DVT) is well known. The reduced mobility of leg affects a large number of patients in a wide range of clinical scenarios spanning from swelling of the legs to pulmonary embolism. In normal human beings, an elegant system of venous return, both active and passive is responsible for prevention of deep venous thrombosis. The paper proposes a prophylaxis and exercise device that mimics the natural principles of venous return to promote the blood flow. The device is based on electromechanical actuation, and simultaneous alternating compression mechanism, that is compact and, suitably form fitted in design and additionally requires no specialised training for the usage. The device was tested on a healthy volunteer on two different days and findings support the efficacy of the prophylaxis and exercise device in significantly improving the blood flow rate in the lower limb. The prototype device is considered as a major step towards designing a clinically validated lower limb device.

中文翻译：

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一种下肢预防和锻炼装置的设计

导致包括深静脉血栓形成 (DVT) 在内的潜在危及生命的状况的腿不能活动的问题是众所周知的。从腿部肿胀到肺栓塞，腿部活动能力下降会影响广泛的临床场景中的大量患者。在正常人中，一个优雅的静脉回流系统（主动和被动）负责预防深静脉血栓形成。该论文提出了一种模仿静脉回流的自然原理以促进血液流动的预防和锻炼装置。该装置基于机电驱动和同步交替压缩机构，结构紧凑，设计合理，无需专门培训即可使用。该设备在不同的两天在一名健康志愿者身上进行了测试，结果支持预防和锻炼设备在显着改善下肢血流量方面的功效。该原型设备被认为是设计临床验证下肢设备的重要一步。