An anastomosis device, comprising: a body formed from a woven shape-memory wire and defining a central lumen, the body being configurable between an expanded position in which the body assumes a generally tubular configuration having a wire mesh wall adapted for insertion into a lumen of an anastomotic site and a rest position in which the body assumes an annular configuration having a plurality of petals with petal tips that define an outer periphery, the rest position being effective to hold opposed tissues of the anastomotic site in apposition and to apply a pressure to the opposed tissues such that the pressure decreases from the outer periphery to an inner periphery of the device, wherein the plurality of petals comprise a superior set of adjacent petals and an inferior set (206") of adjacent petals, and the device is adapted to receive the opposed tissues between the inferior and superior sets of petals, wherein, in a rest position, each petal of the superior set and inferior set (206") of adjacent petals is formed by adjacent arms (210, 212) connected by a tip that extends along a portion of the outer periphery of the device, the tip having a first radius and each arm being connected to the tip at a bend that has a second radius, the first radius being greater than the second radius, characterised in that the adjacent arms (210, 212) of each petal are oriented in a plane that is substantially perpendicular to a central axis extending through the central lumen of the device, at least a portion of the adjacent arms (210', 212') of the superior set of petals including an arc portion having an inferior facing opening, and at least a portion of the adjacent arms (210", 212") of the inferior set (206") of petals including an arc portion having a superior facing opening. a body formed from a woven shape-memory wire and defining a central lumen, the body being configurable between an expanded position in which the body assumes a generally tubular configuration having a wire mesh wall adapted for insertion into a lumen of an anastomotic site and a rest position in which the body assumes an annular configuration having a plurality of petals with petal tips that define an outer periphery, the rest position being effective to hold opposed tissues of the anastomotic site in apposition and to apply a pressure to the opposed tissues such that the pressure decreases from the outer periphery to an inner periphery of the device, wherein the plurality of petals comprise a superior set of adjacent petals and an inferior set (206") of adjacent petals, and the device is adapted to receive the opposed tissues between the inferior and superior sets of petals, wherein, in a rest position, each petal of the superior set and inferior set (206") of adjacent petals is formed by adjacent arms (210, 212) connected by a tip that extends along a portion of the outer periphery of the device, the tip having a first radius and each arm being connected to the tip at a bend that has a second radius, the first radius being greater than the second radius, characterised in that the adjacent arms (210, 212) of each petal are oriented in a plane that is substantially perpendicular to a central axis extending through the central lumen of the device, at least a portion of the adjacent arms (210', 212') of the superior set of petals including an arc portion having an inferior facing opening, and at least a portion of the adjacent arms (210", 212") of the inferior set (206") of petals including an arc portion having a superior facing opening.