The present invention relates to a finger joint rehabilitation device which assists a finger joint extension movement, said finger joint rehabilitation device being provided with: bellows which comprise a bottomed cylindrical body disposed straddling at least one finger joint, along the surface of the skin on the extending-direction side of the finger being rehabilitated, and which are free to expand and contract in an axial direction and are free to bend in a bending direction a pipe which communicates with the bellows and an internal pressure regulating unit which causes a working fluid within the bellows to be expelled via the pipe, resulting in a negative pressure inside the bellows, and causing the bellows to contract, thereby causing a force to be generated, assisting the extension movement of the finger joint. The bellows are provided with: sandwiching portions which are formed on the side surfaces of the bellows and which sandwich the outer periphery of the finger by means of the urging of an elastic force of a pair of elastically deformable fixed pieces, and a cap portion which is formed on an end portion, in the fingertip direction, of the bellows, and which has a recessed portion into which the finger can be inserted.La présente invention concerne un dispositif de rééducation des articulations du doigt qui aide au mouvement dextension des articulations du doigt, ledit dispositif de rééducation des articulations du doigt étant pourvu : dun soufflet, qui comprend un corps cylindrique formant cage, disposé de manière à chevaucher au moins une articulation de doigt, le long de la surface de la peau du côté dextension du doigt étant rééduqué, et qui est libre de se dilater et de se contracter dans une direction axiale et de fléchir dans une direction de flexion dun tuyau qui communique avec le soufflet dune unité de régulation de la pression interne qui amène un fluide actif à lintérieur du soufflet à être expulsé par le tuyau, ce qui mène à une pression négat
