Mechanical design of a knee prosthesis for transfemoral amputation

Gustavo Fernando Vintimilla Leon; Santiago Ferrandiz Bou; Christian Mauricio Cobos Maldonado; Fernando Vladimir Pintado Albarracin

doi:10.1109/ANDESCON50619.2020.9271991

Mechanical design of a knee prosthesis for transfemoral amputation

Gustavo Fernando Vintimilla Leon, Santiago Ferrandiz Bou, Christian Mauricio Cobos Maldonado, Fernando Vladimir Pintado Albarracin

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

In the present investigation, the design and simulation of a polycentric knee mechanism with four-bar of voluntary control is performed, posing its mathematical model using the vector loop equation, so that its instantaneous center of rotation (CIR) meets the stability criteria established by Hosmer-Dorrance. The design of a four-bar system and the clamping for a hydraulic actuator were performed, followed by the simulation using finite elements in SolidWorks. The results obtained indicate that the maximum Von Mises tension in the four-bar mechanism is 5.161x107N/m2 and 3.834x107N/m2 in the actuator clamp, with a safety factor of the entire system greater than 1, guaranteeing to support a maximum weight of 102Kg. A prototype was built by additive and subtractive manufacturing, verifying the correct operation of the system, complying with angular displacements.

Original language	English
Title of host publication	2020 IEEE ANDESCON, ANDESCON 2020
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728193656
DOIs	https://doi.org/10.1109/ANDESCON50619.2020.9271991
State	Published - 13 Oct 2020
Event	2020 IEEE ANDESCON, ANDESCON 2020 - Quito, Ecuador Duration: 13 Oct 2020 → 16 Oct 2020

Publication series

Name	2020 IEEE ANDESCON, ANDESCON 2020

Conference

Conference	2020 IEEE ANDESCON, ANDESCON 2020
Country/Territory	Ecuador
City	Quito
Period	13/10/20 → 16/10/20

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Keywords

Knee
Polycentric mechanism
Prototype
Simulation
Stability
Transfemoral
Voluntary control

Access to Document

10.1109/ANDESCON50619.2020.9271991

Cite this

@inproceedings{76e5359438d54785b111705f63661752,

title = "Mechanical design of a knee prosthesis for transfemoral amputation",

abstract = "In the present investigation, the design and simulation of a polycentric knee mechanism with four-bar of voluntary control is performed, posing its mathematical model using the vector loop equation, so that its instantaneous center of rotation (CIR) meets the stability criteria established by Hosmer-Dorrance. The design of a four-bar system and the clamping for a hydraulic actuator were performed, followed by the simulation using finite elements in SolidWorks. The results obtained indicate that the maximum Von Mises tension in the four-bar mechanism is 5.161x107N/m2 and 3.834x107N/m2 in the actuator clamp, with a safety factor of the entire system greater than 1, guaranteeing to support a maximum weight of 102Kg. A prototype was built by additive and subtractive manufacturing, verifying the correct operation of the system, complying with angular displacements.",

keywords = "Knee, Polycentric mechanism, Prototype, Simulation, Stability, Transfemoral, Voluntary control",

author = "{Vintimilla Leon}, {Gustavo Fernando} and {Ferrandiz Bou}, Santiago and {Cobos Maldonado}, {Christian Mauricio} and {Pintado Albarracin}, {Fernando Vladimir}",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.; 2020 IEEE ANDESCON, ANDESCON 2020 ; Conference date: 13-10-2020 Through 16-10-2020",

year = "2020",

month = oct,

day = "13",

doi = "10.1109/ANDESCON50619.2020.9271991",

language = "English",

series = "2020 IEEE ANDESCON, ANDESCON 2020",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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address = "United States",

}

Vintimilla Leon, GF, Ferrandiz Bou, S, Cobos Maldonado, CM & Pintado Albarracin, FV 2020, Mechanical design of a knee prosthesis for transfemoral amputation. in 2020 IEEE ANDESCON, ANDESCON 2020., 9271991, 2020 IEEE ANDESCON, ANDESCON 2020, Institute of Electrical and Electronics Engineers Inc., 2020 IEEE ANDESCON, ANDESCON 2020, Quito, Ecuador, 13/10/20. https://doi.org/10.1109/ANDESCON50619.2020.9271991

Mechanical design of a knee prosthesis for transfemoral amputation. / Vintimilla Leon, Gustavo Fernando; Ferrandiz Bou, Santiago; Cobos Maldonado, Christian Mauricio et al.
2020 IEEE ANDESCON, ANDESCON 2020. Institute of Electrical and Electronics Engineers Inc., 2020. 9271991 (2020 IEEE ANDESCON, ANDESCON 2020).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Mechanical design of a knee prosthesis for transfemoral amputation

AU - Vintimilla Leon, Gustavo Fernando

AU - Ferrandiz Bou, Santiago

AU - Cobos Maldonado, Christian Mauricio

AU - Pintado Albarracin, Fernando Vladimir

PY - 2020/10/13

Y1 - 2020/10/13

N2 - In the present investigation, the design and simulation of a polycentric knee mechanism with four-bar of voluntary control is performed, posing its mathematical model using the vector loop equation, so that its instantaneous center of rotation (CIR) meets the stability criteria established by Hosmer-Dorrance. The design of a four-bar system and the clamping for a hydraulic actuator were performed, followed by the simulation using finite elements in SolidWorks. The results obtained indicate that the maximum Von Mises tension in the four-bar mechanism is 5.161x107N/m2 and 3.834x107N/m2 in the actuator clamp, with a safety factor of the entire system greater than 1, guaranteeing to support a maximum weight of 102Kg. A prototype was built by additive and subtractive manufacturing, verifying the correct operation of the system, complying with angular displacements.

AB - In the present investigation, the design and simulation of a polycentric knee mechanism with four-bar of voluntary control is performed, posing its mathematical model using the vector loop equation, so that its instantaneous center of rotation (CIR) meets the stability criteria established by Hosmer-Dorrance. The design of a four-bar system and the clamping for a hydraulic actuator were performed, followed by the simulation using finite elements in SolidWorks. The results obtained indicate that the maximum Von Mises tension in the four-bar mechanism is 5.161x107N/m2 and 3.834x107N/m2 in the actuator clamp, with a safety factor of the entire system greater than 1, guaranteeing to support a maximum weight of 102Kg. A prototype was built by additive and subtractive manufacturing, verifying the correct operation of the system, complying with angular displacements.

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KW - Polycentric mechanism

KW - Prototype

KW - Simulation

KW - Stability

KW - Transfemoral

KW - Voluntary control

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M3 - Conference contribution

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T3 - 2020 IEEE ANDESCON, ANDESCON 2020

BT - 2020 IEEE ANDESCON, ANDESCON 2020

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ER -

Mechanical design of a knee prosthesis for transfemoral amputation

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Bibliographical note

Keywords

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