Development of a Novel Device to Measure Socket Pistoning

新型套筒活塞测量装置的研制

• 批准号: 9137137
• 负责人: Alena Grabowski
• 金额: --
• 依托单位: VA EASTERN COLORADO HEALTH CARE SYSTEM
• 依托单位国家: 美国
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-07-01 至 2018-06-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9137137
• 关键词: Activities of Daily Living; Amputation; Appointment; Appointments and Schedules; Bulla; Clinic; Clinical; Colorado; Computer software; Custom; Data; Development; Devices; Diagnostic radiologic examination; Educational process of instructing; Ensure; Equipment; Evaluation; Feedback; Guidelines; Healthcare Systems; Interview; Knee bone; Knee joint; Lead; Leg; Life; Life Style; Limb structure; Location; Magnetism; Measurement; Measures; Methods; Microprocessor; Modification; Motion; Movement; Musculoskeletal; Patients; Persons; Prosthesis; Publishing; Quality of life; Questionnaires; Radio-Opaque; Reading; Rehabilitation therapy; Research; Research Personnel; Signal Transduction; Skin; Structure; System; Tantalum; Techniques; Technology; Time; Training; Veterans; Walking; Wireless Technology; Work; abstracting; cost; design; experience; functional restoration; graphical user interface; human subject; improved; improved functioning; meetings; novel; portability; prosthetic socket; prototype; public health relevance; rehabilitation technology; residual limb; skin irritation; tool

 DESCRIPTION (provided by applicant): Project Summary/Abstract Socket pistoning, defined as the axial movement of the residual limb within a prosthetic socket, leads to discomfort and skin damage such as blisters, skin breakdown, and callouses in Veterans with an amputation. Most previous research has assessed pistoning statically, but this does not represent the pistoning that takes place during typical activities encountered in daily life. Two previous studies have assessed pistoning dynamically, but required expensive equipment and socket modification. Developing an inexpensive tool that does not require socket modification and can accurately measure socket pistoning dynamically could improve socket comfort and fit for Veterans with amputations, allowing them to regain the greatest possible level of functional ability and activity. The purpose of the proposed project is to design, develop, validate, and clinically implement a novel measurement device that is inexpensive, requires no socket modification, and accurately and quantitatively measures socket pistoning in Veterans with transtibial and transfemoral amputations. Using technology such as non-contact potentiometers and wireless transceivers, an accurate, portable, and inexpensive prototype has been developed. The first aim of the proposed work is to further design and develop this dynamic socket pistoning measurement device so that it can be used in a clinical setting. Five devices and a user interface will be assembled and calibrated. The devices will be small (7cm x 4cm x 3cm), inexpensive (cost <$500), portable (battery-powered and wireless), and require no socket modification. The second aim is to validate the socket pistoning measurement device. To assess dynamic socket pistoning, data will be collected simultaneously from the socket pistoning measurement device, dynamic stereo radiography system, and Vicon motion capture system, while an anthropomorphic representative limb is moved up and down at 1-2 Hz within a 40 mm range inside a custom-fabricated socket, an axial movement typical for walking. When the socket pistoning measurement device results are less than 2 mm different from the dynamic stereo radiography and Vicon systems, and have a signal drift of less than 1% over five minutes, the device will be implemented in the clinic. The final aim is to clinically implement the socket pistoning measurement device on Veterans with an amputation at the VA Eastern Colorado Health Care System Jewell Regional Amputation Clinic to practically assess system design and function. Three prosthetists will implement the socket pistoning measurement device during their regularly scheduled appointments on 20 Veterans with transtibial or transfemoral amputations. Both the patients and prosthetists will evaluate the device for ease of use, comfort and applicability. The accurate quantification of socket pistoning dynamically and in a clinical setting will provide an objective measure of socket comfort and fit; thus giving beneficial information to prosthetists and researchers that could improve socket fabrication techniques and assessment of socket comfort. Properly fitting sockets and the reduction of socket pistoning have the potential to reduce residual limb skin problems, make ambulation more comfortable, and encourage a more active lifestyle among Veterans with a leg amputation.

 描述（由申请人提供）： 项目摘要/摘要 接受腔活塞运动，定义为残肢在假肢接受腔内的轴向运动，会导致截肢退伍军人的不适和皮肤损伤，例如水泡、皮肤破裂和老茧。但这并不代表日常生活中遇到的典型活动中发生的活塞运动，之前的两项研究已经动态地评估了活塞运动，但需要昂贵的设备和插座改造来开发一种廉价的工具。需要接受窝修改并能够动态准确地测量接受窝活塞运动，可以提高接受截肢退伍军人的接受窝舒适度和贴合度，使他们能够恢复最大程度的功能能力和活动。 该项目的目的是设计、开发、验证和临床实施一种新型测量装置，该装置价格低廉，无需修改接受腔，并使用非接触式等技术准确、定量地测量经过胫骨和股骨截肢的退伍军人的接受腔活塞运动。电位计和无线收发器，开发了一种精确、便携式且廉价的原型。拟议工作的首要目标是进一步设计和开发这种动态插座活塞测量装置，以便将其用于临床。将组装和校准五个设备和一个用户界面。这些设备体积小（7 厘米 x 4 厘米 x 3 厘米），价格便宜（成本< 500 美元），便于携带（电池供电和无线），并且无需修改插座。目的是验证承窝活塞测量装置，为了评估动态承窝活塞，将同时从承窝活塞测量装置、动态立体放射成像系统和Vicon运动捕捉系统收集数据，同时使用拟人化的代表性肢体。在定制的接受腔内以 1-2 Hz 的频率在 40 毫米范围内上下移动，这是步行时典型的轴向运动。当接受腔活塞测量装置的结果与动态立体放射成像和 Vicon 系统的误差小于 2 毫米时，并且五分钟内信号漂移小于 1%，该设备将在诊所中使用。最终目标是在 VA 东科罗拉多州医疗保健系统的截肢退伍军人身上应用插座活塞测量设备。 Jewell 区域截肢诊所将在定期预约中对 20 名进行小腿或股骨截肢的退伍军人实施插座活塞测量装置，以实际评估系统的设计和功能。患者和假肢师都将评估该装置的易用性和舒适度。临床环境中关节窝活塞运动的准确量化将提供关节窝舒适度和贴合度的客观测量，从而为假肢医师和研究人员提供可以改进的有用信息；插座制造技术和插座舒适度评估 正确安装插座和减少插座活塞有可能减少残肢皮肤问题，使行走更加舒适，并鼓励腿部截肢退伍军人采取更积极的生活方式。