CAREER: Manufacturing Tools for the Next Generation of Tissue Engineering, Manufacturing Education for the Next Generation of Engineers
职业:下一代组织工程的制造工具、下一代工程师的制造教育
基本信息
- 批准号:1552358
- 负责人:
- 金额:$ 50万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2016
- 资助国家:美国
- 起止时间:2016-05-01 至 2017-05-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
It is now conceivable to fabricate engineered tissues inside the human body through a "keyhole" surgery with a robotic, endoscopic 3D printer. This long-term vision has broad implications for healthcare; the way in which surgeons replace diseased and damaged tissue could be forever transformed. This Faculty Early Career Development (CAREER) award supports a study on the dynamics of material delivery in an endoscopic 3D printer, a necessary step to realize this vision. This award also supports an innovative program for high school students to design an assistive device for patients with a specific ambulation disability. An endoscopic 3D printer is composed of a rod-like end-effector (to deliver a fluid-phase material through a "keyhole" surgical site) and a chain of kinematic elements (to position this end-effector). With this form-factor, an endoscopic 3D printer will have dynamic coupling between the positioning and material delivery sub-systems of the end-effector (not observed in a standard 3D printer), and a higher fluidic resistance in the material delivery sub-system than a standard 3D printer. The first research objective is to establish the analytic input-output relationship for the end-effector and compare the output value to a computational model. To achieve this objective, the established Herschel-Bulkley constitutive model for non-Newtonian colloidal fluids will be used to describe the material while geometric constraints and boundary conditions relevant to an endoscopic 3D printer end-effector will be imposed. The output (flowrate) prediction from the input-output relationship will be compared to the predicted output value from a multi-physics computational model. The second objective is to test the hypothesis that the output rise time of a two-degree-of-freedom material delivery actuator (designed to mitigate the higher fluidic resistance) will be significantly lower than the output rise time of a nominal material delivery actuator. This hypothesis will be tested by experiments. The output rise time for the two different material delivery actuators will be measured by machine vision under dynamic flowrate references. The third objective is to establish the input-output relationships of the complete endoscopic 3D printer and compare outputs values to an experiment. To achieve this objective, a quasi-static kinematic model will be used to describe the serial chain of kinematic elements, which will then be coupled with the end-effector input-output relationship established in objectives one and two. Multiple output predictions (six positions and one flowrate) from the input-output relationships will be compared to measured values from experiments performed on a prototype endoscopic 3D printer.
现在可以想象,使用机器人内窥镜 3D 打印机通过“锁孔”手术在人体内制造工程组织。 这一长期愿景对医疗保健具有广泛的影响;外科医生替换患病和受损组织的方式可能会永远改变。 该学院早期职业发展 (CAREER) 奖项支持对内窥镜 3D 打印机中材料输送动力学的研究,这是实现这一愿景的必要步骤。该奖项还支持一项针对高中生的创新计划,为患有特定行走障碍的患者设计辅助设备。 内窥镜 3D 打印机由棒状末端执行器(用于通过“锁孔”手术部位输送液相材料)和一系列运动元件(用于定位该末端执行器)组成。 凭借这种外形尺寸,内窥镜 3D 打印机将在末端执行器的定位和材料输送子系统之间实现动态耦合(在标准 3D 打印机中未观察到),并且材料输送子系统中的流体阻力比标准 3D 打印机更高。 第一个研究目标是建立末端执行器的分析输入输出关系,并将输出值与计算模型进行比较。 为了实现这一目标,将使用已建立的非牛顿胶体流体的 Herschel-Bulkley 本构模型来描述材料,同时施加与内窥镜 3D 打印机末端执行器相关的几何约束和边界条件。 输入输出关系的输出(流量)预测将与多物理场计算模型的预测输出值进行比较。 第二个目标是测试以下假设:双自由度材料输送致动器(旨在减轻较高的流体阻力)的输出上升时间将显着低于标称材料输送致动器的输出上升时间。 这一假设将通过实验得到检验。两种不同材料输送执行器的输出上升时间将通过机器视觉在动态流量参考下测量。 第三个目标是建立完整内窥镜 3D 打印机的输入输出关系,并将输出值与实验进行比较。 为了实现这一目标,将使用准静态运动学模型来描述运动元件的串行链,然后将其与目标一和目标二中建立的末端执行器输入输出关系耦合。 来自输入输出关系的多个输出预测(六个位置和一个流量)将与原型内窥镜 3D 打印机上进行的实验的测量值进行比较。
项目成果
期刊论文数量(0)
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专利数量(0)
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David Hoelzle其他文献
A curved electrode electrostatic actuator designed for large displacement and force in an underwater environment
一种弯曲电极静电致动器,专为水下环境中的大位移和大力而设计
- DOI:
10.1088/1361-6439/aa7a47 - 发表时间:
2017 - 期刊:
- 影响因子:2.3
- 作者:
B. S. Preetham;Melinda A. Lake;David Hoelzle - 通讯作者:
David Hoelzle
A large displacement, high frequency, underwater microelectromechanical systems actuator
一种大位移、高频、水下微机电系统执行器
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:0
- 作者:
David Hoelzle;Clara K. Chan;Michael B Scott;Melinda A. Lake;A. Rowat - 通讯作者:
A. Rowat
Flexible adaptation of iterative learning control with applications to synthetic bone graft manufacturing
迭代学习控制的灵活适应及其在合成骨移植制造中的应用
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:0
- 作者:
David Hoelzle - 通讯作者:
David Hoelzle
A regulated environment for micro-organs defines essential conditions for intercellular Ca2+ waves
微器官的调节环境定义了细胞间 Ca2 波的必要条件
- DOI:
- 发表时间:
2016 - 期刊:
- 影响因子:0
- 作者:
C. Narciso;N. M. Contento;T. J. Storey;David Hoelzle;J. Zartman - 通讯作者:
J. Zartman
Reliability Guidelines and Flowrate Modulation for a Micro Robotic Deposition System
微型机器人沉积系统的可靠性指南和流量调制
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:0
- 作者:
David Hoelzle - 通讯作者:
David Hoelzle
David Hoelzle的其他文献
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{{ truncateString('David Hoelzle', 18)}}的其他基金
PFI-RP: Materials and surgical characterization for minimally invasive additive manufacturing of synthetic tissues inside the body
PFI-RP:体内合成组织微创增材制造的材料和手术表征
- 批准号:
1919204 - 财政年份:2019
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
SNM: Manufacturing Autonomy for Directed Evolution of Materials (MADE-Materials) for Robust, Scalable Nanomanufacturing
SNM:材料定向进化(MADE-Materials)的制造自主权,实现稳健、可扩展的纳米制造
- 批准号:
1727894 - 财政年份:2017
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
Collaborative Research: A Novel Control Strategy for 3D Printing of Micro-Scale Devices
协作研究:微型设备 3D 打印的新型控制策略
- 批准号:
1737688 - 财政年份:2016
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
CAREER: Manufacturing Tools for the Next Generation of Tissue Engineering, Manufacturing Education for the Next Generation of Engineers
职业:下一代组织工程的制造工具、下一代工程师的制造教育
- 批准号:
1708819 - 财政年份:2016
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
Collaborative Research: A Novel Control Strategy for 3D Printing of Micro-Scale Devices
协作研究:微型设备 3D 打印的新型控制策略
- 批准号:
1434660 - 财政年份:2014
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
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