Interface Materials for Patients with Limb Amputation

适用于截肢患者的界面材料

• 批准号: 8129794
• 负责人: Joan E. Sanders
• 金额: $ 30.85万
• 依托单位: UNIVERSITY OF WASHINGTON
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-08-15 至 2015-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8129794
• 关键词: Adherence; Affect; Amputation; Amputees; Area; Biomechanics; Characteristics; Clinical; Custom; Data; Denture Liners; Development; Engineering; Evaluation; Funding; Future; Goals; Health; Industry; Injury; Limb structure; Materials Testing; Mechanics; Modeling; Online Systems; Orthotic Devices; Patient Care; Patients; Performance; Persons; Property; Prosthesis; Rehabilitation therapy; Research; Research Personnel; Residual state; Services; Skin; Soft Tissue Injuries; Suspension substance; Suspensions; System; Temperature; Testing; Thermal Conductivity; Time; To specify; Wheelchairs; base; clinically relevant; cost; design; health related quality of life; improved; instrumentation; performance tests; thermal stress; tool; voltage

DESCRIPTION (provided by applicant): The long-term goal of this project is the improved prescription and design of interface liner materials for patients with limb amputation so as to create prostheses that are mechanically stable and resist soft tissue injury during ambulation. The specific aims are to develop a suite of testing systems to evaluate commercially available interface liners, interpret the results, and communicate to practitioners how these different liners affect skin mechanics, limb- socket stability, and limb temperature. The developed suite should quickly and easily allow practitioners to evaluate materials for use with their patients and assist them in making informed decisions based upon the best available scientific evidence and mechanical testing data. Key features include properties of new prosthetic liners and to what degree the liners change their mechanical performance over time with continual and typical use. These material performance data are placed within a clinically relevant framework for evaluation and prescription. Further, development of this suite will allow continued provision of this service at a low cost well beyond the funding period. To achieve the aims, custom instrumentation is developed to test liners specifically for limb prosthetics application. The materials are tested for their abilities to provide: cushioning; prosthetic suspension; skin adherence; volume change accommodation; breathability; thermal conductivity; and durability. Both new liners and those used by patients for up to nine months are tested. Both conventional liners and "smart" liners, which change their properties upon an applied voltage or force, are tested. Biomechanical models are implemented to compare limb-socket interface mechanics, limb-socket stability, and thermal stresses on the residual limb for different liners during patient use. The data are then incorporated into a clear and easy-to- understand format presentation for use by practitioners, patients, researchers, and industry. The health relatedness of this application is an evaluation and dissemination strategy that has widespread use in rehabilitation treatment. Quantitative material data are presented in a clinically relevant format to improve amputee patient care and health-related quality of life. Liner selection and prescription should be enhanced, reducing the occurrence of skin breakdown and injury to persons with limb amputation. Further, this research will help to specify quantitative engineering needs of future liners. Potentially, the efforts described in the proposed application can be extended to other areas where the selection of the skin interface is of clinical importance, including wheelchair seating, footwear, insoles and orthotic devices. PUBLIC HEALTH RELEVANCE: The long-term goal of this project is a useful tool for prescription of interface liner materials for patients with limb amputation so as to create prostheses that are mechanically stable during ambulation and do not cause soft tissue injury.

描述（申请人提供）：该项目的长期目标是改进肢体截肢患者界面衬垫材料的处方和设计，以制造机械稳定且在行走过程中抵抗软组织损伤的假肢。具体目标是开发一套测试系统来评估市售的接口衬垫、解释结果并向从业者传达这些不同的衬垫如何影响皮肤力学、肢体插座稳定性和肢体温度。开发的套件应能够快速、轻松地允许从业者评估用于患者的材料，并帮助他们根据最佳可用的科学证据和机械测试数据做出明智的决定。主要特征包括新型假肢衬垫的特性，以及随着时间的推移，连续和典型使用衬垫的机械性能变化程度。这些材料性能数据被置于临床相关的评估和处方框架内。此外，该套件的开发将允许在资助期结束后继续以低成本提供该服务。为了实现这些目标，开发了定制仪器来测试专门用于肢体假肢应用的衬垫。这些材料经过测试，可提供以下功能： 缓冲；假肢悬吊；皮肤附着力；体积变化调节；透气性；导热系数；和耐用性。新的衬垫和患者使用长达九个月的衬垫都经过测试。传统衬垫和“智能”衬垫都经过测试，它们在施加电压或力时会改变其特性。采用生物力学模型来比较患者使用过程中不同衬垫的肢体-插座界面力学、肢体-插座稳定性以及残肢上的热应力。然后将数据合并成清晰且易于理解的格式演示，供从业人员、患者、研究人员和行业使用。该应用程序的健康相关性是一种在康复治疗中广泛使用的评估和传播策略。定量材料数据以临床相关格式呈现，以改善截肢患者的护理和健康相关的生活质量。应加强衬垫的选择和处方，减少截肢者皮肤破损和损伤的发生。此外，这项研究将有助于确定未来衬里的定量工程需求。潜在地，所提出的申请中描述的努力可以扩展到皮肤界面的选择具有临床重要性的其他领域，包括轮椅座椅、鞋类、鞋垫和矫形装置。 公共健康相关性：该项目的长期目标是为肢体截肢患者提供接口衬垫材料处方的有用工具，从而制造出在行走过程中机械稳定且不会造成软组织损伤的假肢。