Aspects of the invention include devices and methods for correcting a torso deformity of a patient. The devices include a suction chamber for placement around the torso deformity and to provide negative pressure to the torso deformity； and a measurement component coupled to the suction chamber. The measurement component is adapted to indicate a relative distance between the torso deformity and a distal surface of the suction chamber. The methods include positioning a torso deformity correcting device around a torso deformity on a torso of a patient. The methods further include withdrawing air from the suction chamber to apply negative pressure within the suction chamber to displace the torso deformity, and setting a negative pressure level by measuring the relative distance of the torso deformity and the distal surface of the suction chamber that is indicated by the measurement component.
