A prosthesis for repairing a hernia defect, comprising: a patch body having a periphery, a first axis and a second axis perpendicular to the first axis, the first axis and the second axis intersecting at approximately a center of the patch body, an upper portion of the patch body on one side of the first axis and a lower portion of the patch body on the other side of the first axis; a support member to assist in unfurling the patch body from the reduced configuration to an expanded configuration, the support member including a first portion that is positionable on the upper portion of the patch body and a second portion that is positionable on a lower portion of the patch body; characterised in that the support member is self-expanding and in that the prosthesis is further provided with a hoisting frame releasably attachable to the patch body, the hoisting frame defining an open interior and including a translation component extending through the open interior; and a tether attached to the translation component, a free end of the tether extendable away from the translation component and through the patch body when the hoisting frame is releasably attached to the patch body, a pulling force on the free end of the tether in an outward direction away from the patch body being directed by the translation component in the direction of a first pair of spaced apart locations on opposite sides of the second axis at the upper portion of the patch body when in the expanded configuration and a second pair of spaced apart locations on opposite sides of the second axis at the lower portion of the patch body; wherein the patch body and the hoisting frame when releasably attached to the patch body are manipulable into a reduced configuration for insertion through a narrow incision or cannula into a patient. a patch body having a periphery, a first axis and a second axis perpendicular to the first axis, the first axis and the second axis intersecting at approximately a center of the patch body, an upper portion of the patch body on one side of the first axis and a lower portion of the patch body on the other side of the first axis; a support member to assist in unfurling the patch body from the reduced configuration to an expanded configuration, the support member including a first portion that is positionable on the upper portion of the patch body and a second portion that is positionable on a lower portion of the patch body; characterised in that the support member is self-expanding and in that the prosthesis is further provided with a hoisting frame releasably attachable to the patch body, the hoisting frame defining an open interior and including a translation component extending through the open interior; and a tether attached to the translation component, a free end of the tether extendable away from the translation component and through the patch body when the hoisting frame is releasably attached to the patch body, a pulling force on the free end of the tether in an outward direction away from the patch body being directed by the translation component in the direction of a first pair of spaced apart locations on opposite sides of the second axis at the upper portion of the patch body when in the expanded configuration and a second pair of spaced apart locations on opposite sides of the second axis at the lower portion of the patch body; wherein the patch body and the hoisting frame when releasably attached to the patch body are manipulable into a reduced configuration for insertion through a narrow incision or cannula into a patient. <EOS>