Expect more from your helmet: development of a helmet to prevent broken necks in head-first impact

对您的头盔抱有更多期望：开发一种头盔，以防止头部先行撞击时颈部折断

• 批准号: 557100-2020
• 负责人: Cripton, Peter
• 金额: $ 8.23万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Idea to Innovation
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=706602
• 关键词: Expect; more; your; helmet; development

The PIVOT Protection System is an add-on mechanism that can be added to existing helmets that helps protect the user's cervical spine upon impact. Individuals participating in extreme sports such as motocross, BMX, and mountain biking are increasingly susceptible to head-on impacts at high speeds. The orientation of the user's body upon impact can drastically change the mode of injury, with the most dangerous orientation being a slight flexion in the neck. This mode of impact applies a direct axial load on the spine and can result in life-altering injuries such as quadriplegia. That being said, the risk of these injuries can be greatly reduced if the head and neck are rotated out of this vulnerable orientation upon impact; this is exactly what the PIVOT Protection System does. By using a two shell design and mechanism that rotates the inner shell and head with respect to the outer shell. Multiple prototypes have been created and fit to commercial downhill mountain biking helmets. Preliminary testing has shown promising results including decreases in the load on the spine by over 40% and a corresponding decrease in the impact the head feels. No protection system like PIVOT exists on the market today. Other companies such as MIPS (Multi Impact Protection System) have taken a similar approach to solve a very different problem; that being brain injury. MIPS's system allows for the relative motion of the head in all directions with respect to the helmet. In order for the system to function, a significant component of the impact vector must be acting parallel to the impact surface, thus inducing rotation. If the impact vector is primarily axial (that is, acting perpendicular to the impact surface) the MIPS system simply cannot provide rotational motion. This renders the MIPS system (and others like it) ineffective in the compressive axial impacts that can cause spinal cord injury.

PIVOT保护系统是一种附加机制，可以添加到现有的头盔，有助于保护用户的颈椎受到冲击。参加摩托车越野赛、小轮车和山地自行车等极限运动的个人越来越容易受到高速迎面撞击的影响。使用者身体在撞击时的方向会极大地改变受伤的模式，最危险的方向是颈部的轻微弯曲。这种撞击方式会对脊柱施加直接的轴向载荷，并可能导致改变生命的伤害，如四肢瘫痪。 也就是说，如果头部和颈部在撞击时从这个脆弱的方向旋转出来，这些伤害的风险可以大大降低;这正是PIVOT保护系统所做的。通过使用双壳体设计和相对于外壳旋转内壳体和头部的机构。多个原型已经创建并适合商业下坡山地自行车头盔。初步 测试已经显示出有希望的结果，包括脊柱上的负荷减少超过40%，并且头部感觉到的冲击相应减少。 目前市场上还没有像PIVOT这样的保护系统。其他公司，如MIPS（多冲击保护系统）采取了类似的方法来解决一个非常不同的问题;这是脑损伤。MIPS的系统允许头部相对于头盔在所有方向上的相对运动。为了使该系统发挥作用，撞击矢量的重要分量必须平行于撞击表面，从而引起旋转。如果撞击矢量主要是轴向的（即，垂直于撞击表面作用），则MIPS系统根本不能提供旋转运动。这使得MIPS系统（和其他类似系统）在可能导致脊髓损伤的压缩轴向冲击中无效。