The University of Bologna and the INAIL Prostheses Centre are collaborating for the design of new high-functionality prostheses addressed to upper limb amputees with a high-level amputation, who are currently rehabilitated by inadequate commercial solutions. This study deals with the development of a new powered humeral rotator that should integrate the prosthesis previously developed by the research group, which is already provided with a terminal device, a wrist rotator, an elbow joint and a prototype of shoulder articulation composed of two powered revolute joints. This paper focuses on the design methodology that was followed to retrieve the design input data necessary for the development of the humeral rotator. The methodology is mainly based on kinematic and kinetostatic analyses of multibody models of upper limb prostheses. The kinematic simulations are used to define the ability of the arm models (that have less than the six degrees of freedom required for generically positioning and orienting the terminal device) to perform important activities of daily living satisfactorily, i.e. with an acceptable accuracy. Kinetostatic analyses are then performed to determine the loads acting on the humeral rotator when performing the mentioned activities, thus making it possible to define fundamental design guidelines and technical specifications.

Determination of the Design Specifications of a Powered Humeral Rotator for a Myoelectric Prosthesis

TRONCOSSI, MARCO;PARENTI CASTELLI, VINCENZO
2011

Abstract

The University of Bologna and the INAIL Prostheses Centre are collaborating for the design of new high-functionality prostheses addressed to upper limb amputees with a high-level amputation, who are currently rehabilitated by inadequate commercial solutions. This study deals with the development of a new powered humeral rotator that should integrate the prosthesis previously developed by the research group, which is already provided with a terminal device, a wrist rotator, an elbow joint and a prototype of shoulder articulation composed of two powered revolute joints. This paper focuses on the design methodology that was followed to retrieve the design input data necessary for the development of the humeral rotator. The methodology is mainly based on kinematic and kinetostatic analyses of multibody models of upper limb prostheses. The kinematic simulations are used to define the ability of the arm models (that have less than the six degrees of freedom required for generically positioning and orienting the terminal device) to perform important activities of daily living satisfactorily, i.e. with an acceptable accuracy. Kinetostatic analyses are then performed to determine the loads acting on the humeral rotator when performing the mentioned activities, thus making it possible to define fundamental design guidelines and technical specifications.
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/100662
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 2
social impact