Artificial muscle, exoskeleton, related method and system

An artificial muscle for a soft exoskeleton, the artificial muscle comprising:

• a first tendon and a second tendon, each of the first tendon and the second tendon comprising an attachment means for attachment of said artificial muscle to a muscle connector of the exoskeleton;
• a muscle core made of a deformable material extending between said first tendon and said second tendon, the muscle core comprising an outer sleeve;
• wherein each of said first and said second tendon is adapted for receiving a respective end of said muscle core;
• wherein said artificial muscle comprises means for connection of said muscle core to an actuator for generating an actuation;
• wherein said muscle core is adapted to undergo a change in length when being actuated, thereby causing said first and said second tendon to move towards each other when said actuation is on or increased, and to move away from each other when said actuation is off or reduced;
• wherein said muscle core further comprises one or more inner sleeves extending between said first and second tendons;
• and wherein said outer sleeve extending between said first and second tendons circumferentially surrounds the one or more inner sleeves, and
• wherein said one or more inner sleeves is at least two inner sleeves.