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Loss of joints and severed sensory pathway cause reduced mobility capabilities in lower limb amputees. Although prosthetic devices attempt to restore normal mobility functions, lack of awareness and control of limb placement increase the risk of falling and causing amputee to have high level of visual dependency. Haptic feedback can serve as a cue for gait events during ambulation thus providing sense...
This paper presents the design of a new haptic feedback device for transradial myoelectric upper limb prosthesis that allows the amputee person to perceive the sensation of force-gripping and object-sliding. The system designed has three mechanical-actuator units to convey the sensation of force, and one vibrotactile unit to transmit the sensation of object sliding. The device designed will be placed...
Haptic feedback to lower limb amputees is essential to maximize the functionality of a prosthetic device by providing information to the user about the interaction with the environment and the position of the prostheses in space. Severed sensory pathway and the absence of connection between the prosthesis and the Central Nervous System (CNS) after lower limb amputation reduces balance control, increases...
One of the capability of a prosthetic hand device that is highly preferred is that it should be able to mimic the functionality of the lost arm, and that loss includes the tactile sensory system. A miniature DC motor has been identified to be the best haptic actuator to deliver the required sensory feedback. Experiments and simulations were carried out to predict the transient responses, driving frequencies...
Haptic feedback for upper-limb prostheses is desirable to enable a user to interact naturally with his or her environment, including operating the limb without vision and performing activities of daily living. We present a noninvasive method of providing one type of haptic feedback, vibration, to an upper-limb prosthesis user to enable discrimination of environment properties. Using a telemanipulation...
We are developing a multi-function haptic device that displays pressure, vibration, shear force, and temperature to the skin of upper extremity amputees, especially those who have undergone targeted nerve reinnervation (TRI) surgery. This paper presents the design of the thermal display portion of this device. Through psychophysical temperature discrimination tests, the unique thermal response characteristics...
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