An assistive robotic glove is any powered device that helps someone with weakness or too little movement in their natural hand to know objects.
The device might be a glove or it might be a hand exoskeleton — it doesn't matter. The main feature is to augment the user's grasping capabilities.
That is usually necessary since the natural hand has lost function due to paralysis, arthritis, or another disease or injury. Design Considerations for Assistive Robotic Gloves
You can find two driving considerations when designing assistive robotic gloves:
The user's degree of movement and/or strength in the natural hand. The fact the natural hand continues to be present.
Their education of movement and/or strength in the natural hand is very important as it dictates the level of required augmentation. If the natural hand has complete movement but is weak, the design requirement is only to tighten or strengthen the hand's grip following the thumb and fingers have moved right into a grasping position. The NUADA glove is an excellent example with this design. It never forces the digits to go but it could augment the user's grip sufficiently to lift 40 kilograms, which is roughly equivalent to the unisex average maximum grip force of an all natural hand.
If the consumer cannot move his hand, then your assistive device must move it for him. In cases like this, designers should be very careful to not damage the natural hand.
Note how a Neomano will force the user's index and middle fingers to close but only under direct control via control buttons. Also, the grip strength is limited by a lift capacity of only 2 kilograms, so even if an individual accidentally forces the fingers to close at the wrong time, this really is unlikely to cause injury.
There is another subtlety to this glove: the user should have the ability to at least relax his fingers to simply help open them. This is because the glove cannot force the fingers open. It can just only help close them. When an individual causes the glove release a an item, all it will is basically release the stress which was previously placed on the fingers via the artificial tendons. The fingers will need to have sufficient mobility to make the most of this relaxed state.