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Upper Limb Prostheses

FERRANDINI Emilie ESIL - GBM 3. Upper Limb Prostheses. Upper Limb Prostheses. Study of prosthetic hand. Study of prosthetic hand. Mr. BRUNET - Mr. DANIELS - Mr. FRAJUT. Synopsis. Introduction. Active Prostheses. Study of the hand. Hydraulic hand prosthesis. Evolutions. Conclusion.

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Upper Limb Prostheses

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  1. FERRANDINI Emilie ESIL - GBM 3 Upper Limb Prostheses Upper Limb Prostheses Study of prosthetic hand Study of prosthetic hand Mr. BRUNET - Mr. DANIELS - Mr. FRAJUT

  2. Synopsis • Introduction. • Active Prostheses. • Study of the hand. • Hydraulic hand prosthesis. • Evolutions. • Conclusion.

  3. Introduction • 85 000 people with just one hand in Europe. • Causes : accident, war, disease … • First prostheses : only cosmetic. • 1960 : first functional prosthetic hand. • Two main types : • passive prostheses. • active prostheses.

  4. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Active Prostheses Body-powered prostheses • Requirements • possess at least one gross body movement • sufficient residual limb and musculature

  5. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Active Prostheses Electrically powered prostheses • Use of small electrical motors. • Myoelectric control : most popular.

  6. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Study of the Hand Hand anatomy • Movement and rotation around 3 axes. • Flexion and extension of each finger. • Thumb opposition.

  7. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Study of the Hand Hand Representation • Degrees of freedom (DOF) • Interphalangeal : 1 DOF • Metacarpophalangeal : 2 DOF • Thumb : 2 DOF • Wrist : 6 DOF

  8. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Hydraulic Hand Prosthesis • Patients needs • An increase of functionality. • A reduction of weight. • A better cosmetic appearance. • A tactile feedback system. • Other requirements • Low power consumption. • Compactness.

  9. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions General Considerations • Why hydraulic system ? • Weight requirements. • Power • Cosmetic • Feedback signal micropump

  10. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Ultralight Prosthesis • Pump and valves far away from the hand. • Reduced stress • Lightness impression

  11. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Multifunctional Prosthesis

  12. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Evolutions • Communication with prostheses. • Feedback system. • Prosthesis attachment.

  13. Active Prostheses Study of the Hand Hydraulic Hand Prosthesis Evolutions Evolutions • Reduction of energy consumption.

  14. Conclusion • Only Cosmetic • Difficult design  Simplest functions • New technologies and materials • Importance of patient’s needs

  15. Thank You For Your Attention Thank You For Your Attention

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