A feasible route for the design and manufacture of customised respiratory protection through digital facial capture.
A feasible route for the design and manufacture of customised respiratory protection through digital facial capture.
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DOI：
10.1038/s41598-021-00341-3
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发表时间：
2021-11-02
影响因子：
4.6
通讯作者：
Cox SC
中科院分区：
文献类型：
--
作者：
Carter LN;Reed CA;Morrell AP;Fong AKH;Chowdhury R;Miller E;Alberini F;Khambay B;Anand S;Grover LM;Coward T;Addison O;Cox SC
世界卫生组织（WHO）认识到在COVID-19大流行期间，一线工作人员需要有效保护，呼吁全球个人防护设备制造量增加40%。目前的设备具有高的配合失败率，使得相当大比例的用户暴露于病毒感染的风险。在非接触式、便携式和广泛可用的3D扫描技术的驱动下，提出了一种工作流程，通过该工作流程，使用相关的面部参数对用户的面部进行快速分类。然后，设备设计将沿着半定制或完全定制的路线进行。半定制设计使用提取的眼睛到下巴的距离来将用户分类到通过200名参与者的队列（包含87.5%的队列）建立的预定尺寸的括号中。用户的鼻部轮廓近似为高斯曲线，以进一步将选择细化为三个子集中的一个。柔性硅胶提供了面部界面，可适应真实鼻轮廓和近似轮廓之间的微小不匹配，在这个具有挑战性的区域保持良好的密封。重要的是，具有外围面部参数的用户被标记为完全定制的路线，从而将硅胶界面映射到3D扫描数据。这两种方法允许大规模制造有限数量的设计变化，目前通过半定制方法有九种，同时确保有效的器械配合。此外，劳动密集型的完全定制设计的目标是那些用户谁将最大的受益。通过涵盖这两种方法，所提出的工作流程平衡了制造规模扩大的可行性与各种用户，以提供尽可能广泛的适配设备。新的流动可视化的模型面上提出了定性的原型设备，以支持工作流方法的拟合测试。
The World Health Organisation has called for a 40% increase in personal protective equipment manufacturing worldwide, recognising that frontline workers need effective protection during the COVID-19 pandemic. Current devices suffer from high fit-failure rates leaving significant proportions of users exposed to risk of viral infection. Driven by non-contact, portable, and widely available 3D scanning technologies, a workflow is presented whereby a user’s face is rapidly categorised using relevant facial parameters. Device design is then directed down either a semi-customised or fully-customised route. Semi-customised designs use the extracted eye-to-chin distance to categorise users in to pre-determined size brackets established via a cohort of 200 participants encompassing 87.5% of the cohort. The user’s nasal profile is approximated to a Gaussian curve to further refine the selection in to one of three subsets. Flexible silicone provides the facial interface accommodating minor mismatches between true nasal profile and the approximation, maintaining a good seal in this challenging region. Critically, users with outlying facial parameters are flagged for the fully-customised route whereby the silicone interface is mapped to 3D scan data. These two approaches allow for large scale manufacture of a limited number of design variations, currently nine through the semi-customised approach, whilst ensuring effective device fit. Furthermore, labour-intensive fully-customised designs are targeted as those users who will most greatly benefit. By encompassing both approaches, the presented workflow balances manufacturing scale-up feasibility with the diverse range of users to provide well-fitting devices as widely as possible. Novel flow visualisation on a model face is presented alongside qualitative fit-testing of prototype devices to support the workflow methodology.
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影响因子：
--
作者：
Burgess, GL;Mashingaidze, MT
通讯作者：
Mashingaidze, MT
影响因子：
3.7
作者：
Shaheen E;Willaert R;Miclotte I;Coropciuc R;Bila M;Politis C
通讯作者：
Politis C
DOI：
10.1080/15459624.2017.1296233
发表时间：
2017-01-01
影响因子：
2
作者：
Zhuang, Ziqing;Bergman, Michael;Shaffer, Ronald
通讯作者：
Shaffer, Ronald
DOI：
10.1080/15459621003729909
发表时间：
2010-01-01
影响因子：
2
作者：
Oestenstad, Riedar Kent;Bartolucci, Alfred A.
通讯作者：
Bartolucci, Alfred A.
影响因子：
4.4
作者：
MacIntyre CR;Wang Q;Cauchemez S;Seale H;Dwyer DE;Yang P;Shi W;Gao Z;Pang X;Zhang Y;Wang X;Duan W;Rahman B;Ferguson N
通讯作者：
Ferguson N