A system and method for treating a constricted bodily lumen, for example, a urethra constricted due to BPH. The method includes a planning stage, during which an area requiring treatment is visually identified, and an execution stage during which the lumen is expanded, a cut is formed in the inner surface of the tissue defining the lumen, and an implant is deployed in the cut. The implant can be an open C-shaped ring, and can be formed of a biodegradable material, or can be removed at a selected time after implantation. The system is formed of a planning device anchorable in the lumen and constructed to facilitate location of an area to be treated, and execution device constructed to deliver an implant, to expand the lumen, to form a cut in the inner surface of tissue defining the lumen, and to release the implant for deployment into the cut.
