A medical implant deployment system (10, 210, 310) for use in placing an implant at a preselected site within a vessel or lumen comprising: a flexible catheter (20, 220, 320) having proximal (24, 224, 324) and distal ends (22, 222, 322) and a lumen (26, 226, 326) extending therethrough, an elongated flexible delivery member (30, 230) having proximal (34, 234) and distal regions (32, 232) and a lumen extending therethrough, said delivery member (30, 230) being positioned within the lumen (26, 226, 326) of said catheter, a medical implant (40, 90, 140, 240, 340) having proximal (44, 92, 144, 244, 344) and distal ends (42, 91, 142, 242, 342) and a coupling member (46, 96, 146, 246, 346) positioned at said implant proximal end (44, 92, 144, 244, 344), said coupling member including an aperture (47, 97, 147, 247, 347) and an engagement portion (48, 98, 148, 248, 348), said implant being positioned within the lumen (26, 226, 326) of said catheter and said implant being releasably coupled to said delivery member (60, 160, 250, 350), a delivery member distal assembly positioned at the distal region (32, 232) of said delivery member (30, 230) including a tubular housing member (60, 160, 250, 350) having proximal (64, 164) and distal regions (62, 162) and a lumen (66, 166) extending therethrough, wherein the proximal region (64, 164) of said tubular housing member is fixedly coupled to said delivery member (30, 230), a resilient engagement member (70, 170, 270, 370) having proximal (72, 172, 272, 372) and distal ends (74, 174, 274, 374) and a tip member (76, 176, 276, 376) in the form of a spherical bead or a rounded disk positioned at said distal end (74, 174, 274, 374) of said engagement member wherein said engagement member (70, 170, 270, 370) extends through the lumen of said tubular housing member and the distal end of said engagement member extends distal to the distal region of said tubular housing member and is positioned within said coupling member aperture, and said tip member engages said engagement portion of said coupling member, and an elongate release member (80, 180, 280) having proximal (82, 182, 282) and distal ends (84, 184, 284) and being positioned within the lumen (66, 166, 257, 357) of said tubular housing member (60, 160, 250, 350), said release member having a first configuration wherein the distal end (84, 184, 284) of said release member is positioned through said coupling member aperture (47, 97, 147, 247, 347) adjacent said engagement member (70, 170, 270, 370) and in cooperation with said engagement member restricts the uncoupling of said coupling member from said engagement member and a second configuration wherein the distal end of said release member allows the uncoupling of said coupling member from said engagement member, said release member being in said first configuration and being operable between said first and second configurations. a flexible catheter (20, 220, 320) having proximal (24, 224, 324) and distal ends (22, 222, 322) and a lumen (26, 226, 326) extending therethrough, an elongated flexible delivery member (30, 230) having proximal (34, 234) and distal regions (32, 232) and a lumen extending therethrough, said delivery member (30, 230) being positioned within the lumen (26, 226, 326) of said catheter, a medical implant (40, 90, 140, 240, 340) having proximal (44, 92, 144, 244, 344) and distal ends (42, 91, 142, 242, 342) and a coupling member (46, 96, 146, 246, 346) positioned at said implant proximal end (44, 92, 144, 244, 344), said coupling member including an aperture (47, 97, 147, 247, 347) and an engagement portion (48, 98, 148, 248, 348), said implant being positioned within the lumen (26, 226, 326) of said catheter and said implant being releasably coupled to said delivery member (60, 160, 250, 350), a delivery member distal assembly positioned at the distal region (32, 232) of said delivery member (30, 230) including a tubular housing member (60, 160, 250, 350) having proximal (64, 164) and distal regions (62, 162) and a lumen (66, 166) extending therethrough, wherein the proximal region (64, 164) of said tubular housing member is fixedly coupled to said delivery member (30, 230), a resilient engagement member (70, 170, 270, 370) having proximal (72, 172, 272, 372) and distal ends (74, 174, 274, 374) and a tip member (76, 176, 276, 376) in the form of a spherical bead or a rounded disk positioned at said distal end (74, 174, 274, 374) of said engagement member wherein said engagement member (70, 170, 270, 370) extends through the lumen of said tubular housing member and the distal end of said engagement member extends distal to the distal region of said tubular housing member and is positioned within said coupling member aperture, and said tip member engages said engagement portion of said coupling member, and an elongate release member (80, 180, 280) having proximal (82, 182, 282) and distal ends (84, 184, 284) and being positioned within the lumen (66, 166, 257, 357) of said tubular housing member (60, 160, 250, 350), said release member having a first configuration wherein the distal end (84, 184, 284) of said release member is positioned through said coupling member aperture (47, 97, 147, 247, 347) adjacent said engagement member (70, 170, 270, 370) and in cooperation with said engagement member restricts the uncoupling of said coupling member from said engagement member and a second configuration wherein the distal end of said release member allows the uncoupling of said coupling member from said engagement member, said release member being in said first configuration and being operable between said first and second configurations.