AI-controlled adaptive fitting device for prosthetics and wearable technologies

**“人的身体会改变形状，但假肢的插座不会。”**我们的身体在晚上比早上大约短1.5厘米。我们的脚和手在晚上更大。我们大多数人都没有注意到这些变化，因为我们穿着柔软的衣服。然而，如果你失去了一条腿，你必须戴上一个固定在你身体上的u形假肢，这个假肢的结构被称为“插座”。插座由硬塑料制成，以承载身体重量和手工制作，以确保最佳的定制配合，遵循树桩的轮廓。然而，75%的截肢者不满意，因为残肢每小时都会改变形状，而他们定制的刚性支架却不会。这会导致持续的皮肤摩擦，造成疼痛的出血伤口和溃疡。在截肢者的余生中，每年更换多达4次插座是目前在英国、欧盟和美国花费71亿英镑公共资金的最佳解决方案（不包括伤口护理费用：仅在英国就有24亿英镑（UK- government /APPG;2019））。截肢者需要像健全人一样，不受身体状况的阻碍，过自信而富有成效的生活。因此，帝国理工学院，MTC和unhinder开发了Roliner，使数百万人的生活独立。**用途：**护套是一种袖子状的装置，在装上义肢之前先戴在残肢上。**方法：** Roliner使用人工智能来了解树桩每小时/每天的变化，并适应它们。Roliner的人工智能可以读取残肢和眼槽之间的实时传感器数据，通过应用程序了解截肢者的舒适度偏好，并通过给Roliner的微通道充气或放气，无缝地、持续地调整假肢的安装。**影响：**假肢装配是截肢者维持日常活动的最大障碍。截肢者的生活依赖于装配诊所，因此，在截肢的第一年，六分之一的截肢者失去了工作。44.3%的工作年龄截肢者在经济上不活跃，造成48.9亿英镑的生产力损失（PapworthTrust,2016）。Roliner的人工智能模拟临床实践，提供类似健全身体的行走体验，将减少生产力损失，减少对医院的依赖，并可能为NHS节省10亿英镑的插孔调整费用和24亿英镑的插孔伤口费用。由于生活质量和活动能力下降，截肢者的肌肉会迅速丧失。35岁的截肢者每天用义肢行走超过500米的概率为74%；而只有34%的人在60岁时几乎只能坐轮椅（资料来源：Geertzen，Jan等人；2005-声称下肢截肢者的行走距离。-残疾与康复）。凭借其首创的无缝人工智能适应性，Roliner可以将步行性能提高3倍，提供类似于健全人的步行体验。减少由插孔引起的伤口可以减少感染的风险，增加活动能力，从而减少肌肉损失。

**"Human body changes shape, but prosthetic sockets don't."**Our bodies are approximately 1.5 cm shorter in the evening, compared to morning. Our feet and hands are larger in the evening. Most of us don't notice these changes because we wear flexible clothes.However, if you lose a leg, you must wear a prosthetic limb attached to your body with a rigid U-shaped structure called a _socket_. Sockets are made of hard plastics to carry the bodyweight and hand-made to ensure the best custom fit by following the stump's contour. However, 75% of amputees are unhappy because the stump changes shape on an hourly basis while their custom-made rigid sockets don't. This leads to constant skin rubbing causing painful bleeding wounds and ulcers. Replacing sockets up to 4 times annually for the rest of amputees' lives is currently the best solution costing £7.1billion of public money in the UK, EU and US each year (Excluding cost of wound care: £2.4billion in the UK alone(UK-Government/APPG;2019)).Amputees need a confident and productive life unhindered by their condition, like able-bodied. Therefore, Imperial College London, MTC and Unhindr developed Roliner to make lives of millions independent.**What:** Roliner is a sleeve-like device worn on the stump before putting the prosthetic limb on.**How:** Roliner uses Artificial Intelligence to understand the hourly/daily changes in the stump and adapts to them. Roliner's AI reads real-time sensors' data between the stump and socket, learns amputees' comfort preferences via an app, and seamlessly and continuously adjust the fitting by inflating/deflating Roliner's micro-channels.**Impact:** Prosthetic limb fitting is the biggest barrier for amputees to maintain their daily activities. Amputees live dependent on fitting clinics, and therefore, within the first year of amputation, 1 in 6 amputees lose their jobs. 44.3% working-age amputees are economically inactive, costing £4.89billion in productivity loss(PapworthTrust,2016). Roliner's AI mimicking the clinical practice and providing able-bodied-like walking experience will reduce productivity loss, hospital dependency, and potentially save the NHS £1billion in socket adjustments, £2.4billion in socket wounds.Due to reduced quality-of life and activity, amputees rapidly lose muscles. The probability of an amputee walking with a prosthetic leg more than 500metres a day is 74% at age 35; while only 34% at age 60, becoming almost wheelchair-bound(Source:Geertzen,Jan et.al;2005-Claimed-walking-distance-of-lower-limb amputees.-Disability-and-rehabilitation). With first-of-its-kind seamless AI-adaptation, Roliner could increase walking performance x3 times, providing able-body-like walking experience. Reducing socket-induced wounds reduces risk of infection, increases mobility, which reduces muscle loss.