Medical System For Annuloplasty

A removable and flexible elongate displacement unit for temporary insertion into a coronary sinus adjacent a defective mitral valve having an annulus, wherein said displacement unit has

• a delivery state for delivery into said coronary sinus, and
• an activated state to which the displacement unit
• is temporarily and reversibly transferable from said delivery state, said displacement unit comprises
• a proximal reversibly expandable portion,
• a distal anchoring portion being movable in relation to said proximal expandable portion in a longitudinal direction of said displacement unit to said activated state in which the shape of the annulus is modified to a modified shape.

Method for treating a defective mitral valve having an annulus, said method comprising:

• inserting a flexible and removable elongate displacement unit in a delivery state into a coronary sinus adjacent said valve,
• positioning a proximal expandable portion against a tissue wall at the entrance of said coronary sinus,
• positioning a distal anchoring portion inside said coronary sinus,
• activating said displacement unit in an activated state whereby said distal anchoring portion is moved in a longitudinal direction of said displacement unit to reduce the distance between said distal anchoring portion and said proximal expandable portion such that the shape of the annulus is modified to a modified shape,
• fixating an annuloplasty device at the mitral valve annulus when said modified shape is obtained, whereby said annuloplasty device comprises a fixation structure that is adapted to retain said modified shape,
• removing said elongate displacement unit after temporary activation in the activated state.