Intestinal lengthening device

A system, comprising:

• an implantable distraction device, the distraction device including a tubular member oriented along a longitudinal axis of the distraction device, a curved first attachment member coupled to the tubular member and configured to be sutured within a body lumen, a curved second attachment member coupled to the tubular member and configured to be sutured within a body lumen, the second attachment member being spaced apart from the first attachment member along the tubular member, at least one magnet coupled to the tubular member and movable relative to the tubular member, at least one of the first attachment member or the second attachment member being axially movable relative to the other of the first attachment member or the second attachment member between a first position and a second position to vary an axial distance between the first and second attachment members, the at least one magnet being configured such that motion of a magnetic field relative to the distraction device causes corresponding motion of the at least one magnet, and corresponding motion of one attachment member relative to the other;
• and
• a control device including a plurality of magnets configured to magnetically couple with the at least one magnet of the distraction device such that motion of the control device in a direction along a longitudinal axis of the distraction device, or motion of the control device perpendicular to the longitudinal axis of the distraction device, causes corresponding motion of one attachment member of the distraction device relative to the other.

A method, comprising:

• implanting a distraction device in a lumen of a patient's body, the distraction device including a tubular member oriented along a longitudinal axis of the distraction device, a curved first attachment member coupled to the tubular member and configured to be sutured within the body lumen, a curved second attachment member coupled to the tubular member and configured to be sutured within the body lumen, the second attachment member being spaced apart from the first attachment member along the tubular member, at least one magnet coupled to the tubular member and movable relative to the tubular member, at least one of the first attachment member or the second attachment member being axially movable relative to the other of the first attachment member or the second attachment member between a first position and a second position to vary an axial distance between the first and second attachment members, and the at least one magnet being configured such that motion of a magnetic field relative to the distraction device causes corresponding motion of the at least one magnet, and corresponding motion of one attachment member relative to the other;
• attaching the first and second attachment members to the lumen of the patient's body;
• applying a magnetic field to the at least one magnet of the distraction device from outside the lumen of the patient's body such that one attachment member moves longitudinally relative to the other attachment member to apply tension to tissue of the body lumen between the first and second attachment members.