The Functional Importance of Powered Wrist Flexion/Extension and Simultaneous Control for Upper Limb Prostheses
上肢假肢动力手腕屈曲/伸展和同步控制的功能重要性
基本信息
- 批准号:10165765
- 负责人:
- 金额:$ 56.58万
- 依托单位:
- 依托单位国家:美国
- 项目类别:
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-09-12 至 2023-05-31
- 项目状态:已结题
- 来源:
- 关键词:AcademyActivities of Daily LivingAddressAlgorithmsAmputationArtificial ArmBathingClinicalCross-Over StudiesDataDevicesFemaleFingersFreedomHandHomeHumanIndividualIntuitionJoint ProsthesisLengthLimb ProsthesisLimb structureManualsMeasurementMethodsMovementOrthotic DevicesOutcomeOutcome MeasureParticipantPattern RecognitionPattern Recognition SystemsPerformancePhase I Clinical TrialsPositioning AttributeProsthesisProtocols documentationQuality of lifeRadialRandomizedRecommendationResearchRotationScienceSelf CareSignal TransductionSystemTestingTimeTrainingUpper ExtremityWorkWristWritingarmbaseclinical implementationcommercializationdexteritydisabilityexperiencefeedingflexibilityfunctional improvementfunctional outcomesgraspimprovedimproved functioninglimb amputationmyoelectric controlnovelpowered prosthesisprosthesis controlprosthesis wearerpsychologicrecruitresidual limbsocialtechnology developmenttool
项目摘要
Project Abstract
The human wrist, which positions the hand to accomplish many essential tasks of daily living, provides three
degrees of freedom (DOFs): rotation, flexion/extension, and ulnar/radial deviation. Current powered prosthetic
wrists provide only wrist rotation; no available powered device provides wrist extension/flexion, which likely
reduces the functional ability of individuals with transradial amputations. We have developed a robust 2-DOF
wrist that provides independently controlled rotation and extension/flexion; we proposed to conduct a phase 1
clinical trial to determine whether this wrist provides better functional performance than a 1-DOF wrist (rotation
only). In addition, we have developed a pattern recognition (PR)-based control system, now commercially
available, which will be used to control devices in this trial. PR of electromyographic (EMG) signals from the
residual limb provides seamless sequential control of arm DOFs, making control easier and more intuitive than
conventional myoelectric control systems that require the user to switch the prosthesis into different modes to
control different DOFs. However, current PR systems do not allow the simultaneous control of DOFs provided
by an intact arm. We have developed a new PR algorithm, based on a novel control method called probabilistic
weighted regression that, in preliminary studies, has demonstrated robust control of a multi-DOF prosthesis.
Thus we will also evaluate the functional benefits of simultaneous PR control compared to sequential PR control.
We will recruit up to 20 individuals with mid-length, unilateral transradial amputations to participate in the trial,
anticipating that at least 14 subjects will complete all three aims. For Aim 1 we will fit participants with a prosthesis
comprising a 1-DOF wrist and either a single- or a multi-DOF terminal device. For each test condition, we will
train participants to use sequential PR control and perform initial functional testing using a comprehensive
toolbox of outcome measures, compiled based on recommendations from the Academy of Prosthetics and
Orthotics and our prior research experience. Participants will then take the prosthesis home and use it for
everyday tasks for six weeks, allowing extensive practice to optimize their functional control of the device. At the
end of the home trial, participants will perform the same outcome measures to assess function. We will repeat
this sequence for Aim 2, where participants will evaluate the same two prostheses except with the 2-DOF wrist.
Finally, for Aim 3, we will follow the same protocol to compare sequential and simultaneous PR control of a
prosthesis with a 1-DOF hand and a 2-DOF wrist. We expect that both the 2-DOF wrist and the simultaneous
PR control system will provide improved function over the 1-DOF wrist and sequential control, respectively. This
study will provide a quantitative assessment of the benefits of a 2-DOF wrist and of simultaneous PR control,
which is necessary for commercialization and further development of these technologies to improve prosthetic
options, and functional ability, for individuals with transradial amputations.
项目摘要
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Levi John Hargrove其他文献
Levi John Hargrove的其他文献
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{{ truncateString('Levi John Hargrove', 18)}}的其他基金
A Neuromusculoskeletal Interface for Bionic Arms: A Randomized Crossover Study
仿生手臂的神经肌肉骨骼接口:随机交叉研究
- 批准号:
10577128 - 财政年份:2023
- 资助金额:
$ 56.58万 - 项目类别:
Understanding how Powered Componentry Impacts K2-Level Transfemoral Amputee Gait
了解动力组件如何影响 K2 级经股截肢者步态
- 批准号:
10585944 - 财政年份:2023
- 资助金额:
$ 56.58万 - 项目类别:
The Functional Importance of Powered Wrist Flexion/Extension and Simultaneous Control for Upper Limb Prostheses
上肢假肢动力手腕屈曲/伸展和同步控制的功能重要性
- 批准号:
10450839 - 财政年份:2018
- 资助金额:
$ 56.58万 - 项目类别:
Intuitive Control of a Hybrid Prosthetic Leg During Ambulation
混合假肢在行走过程中的直观控制
- 批准号:
9789362 - 财政年份:2014
- 资助金额:
$ 56.58万 - 项目类别:
Intuitive Control of a Hybrid Prosthetic Leg During Ambulation
混合假肢在行走过程中的直观控制
- 批准号:
10200864 - 财政年份:2014
- 资助金额:
$ 56.58万 - 项目类别:
Adaptive Recalibration of a Prosthetic Leg Neural Control System
假肢神经控制系统的自适应重新校准
- 批准号:
9054885 - 财政年份:2014
- 资助金额:
$ 56.58万 - 项目类别:
Adaptive Recalibration of a Prosthetic Leg Neural Control System
假肢神经控制系统的自适应重新校准
- 批准号:
8921846 - 财政年份:2014
- 资助金额:
$ 56.58万 - 项目类别:
Intuitive Control of a Hybrid Prosthetic Leg During Ambulation
混合假肢在行走过程中的直观控制
- 批准号:
10456766 - 财政年份:2014
- 资助金额:
$ 56.58万 - 项目类别:
Pathophysiology and Rehabilitation of Neural Dysfunction
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- 批准号:
10612004 - 财政年份:1992
- 资助金额:
$ 56.58万 - 项目类别:
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