An implant for retracting or/and supporting periurethral tissue enclosing a prostatic urethra along a length of prostate lobes (114a, 114b), the implant comprising: an elongated spine member having a spinal longitudinal axis (312, 210); a first elongated edge member and a second elongated edge member symmetrically opposing each other relative to said spinal longitudinal axis (312, 210), each said elongated edge member (314, 316) is interconnected to said spine member via at least one interconnecting member; and at least one tissue support member (322, 354, 356, 362) extending between said first elongated edge member and said spinal longitudinal axis(312, 210), and at least one other tissue support member (324, 350, 352, 360) extending between said second elongated edge member and said spinal longitudinal axis (312, 210), wherein each said tissue support member is sized and configured for supporting a portion of a prostatic lateral lobe (114a, 114b) when said spine member engages an anterior interlobar groove that extends between said prostatic lateral lobes (114a, 114b), and when said first and second elongated edge members (314, 316) engage corresponding posterolateral interlobar grooves (120a, 120b), wherein said spine member has a length being substantially less than a length of each of said first and second elongated edge members (314, 316), wherein said first elongated edge member is sized for positioning in a left posterolateral interlobar groove that extends between a left prostatic lateral lobe and a prostatic medial lobe, and said second elongated edge member is sized for positioning in a right posterolateral interlobar groove that extends between a right prostatic lateral lobe and said prostatic medial lobe. an elongated spine member having a spinal longitudinal axis (312, 210); a first elongated edge member and a second elongated edge member symmetrically opposing each other relative to said spinal longitudinal axis (312, 210), each said elongated edge member (314, 316) is interconnected to said spine member via at least one interconnecting member; and at least one tissue support member (322, 354, 356, 362) extending between said first elongated edge member and said spinal longitudinal axis(312, 210), and at least one other tissue support member (324, 350, 352, 360) extending between said second elongated edge member and said spinal longitudinal axis (312, 210), wherein each said tissue support member is sized and configured for supporting a portion of a prostatic lateral lobe (114a, 114b) when said spine member engages an anterior interlobar groove that extends between said prostatic lateral lobes (114a, 114b), and when said first and second elongated edge members (314, 316) engage corresponding posterolateral interlobar grooves (120a, 120b), wherein said spine member has a length being substantially less than a length of each of said first and second elongated edge members (314, 316), wherein said first elongated edge member is sized for positioning in a left posterolateral interlobar groove that extends between a left prostatic lateral lobe and a prostatic medial lobe, and said second elongated edge member is sized for positioning in a right posterolateral interlobar groove that extends between a right prostatic lateral lobe and said prostatic medial lobe.