A surgical assembly (100) including a surgical introducer (102) having a handle portion (103) and a needle element (101) extending to a free distal end, and a sliding mechanism (600) including a compressible member (610) and a sliding button (602) slidably coupled to the handle portion for longitudinal movement relative thereto and having a first retaining device (201) extending outwardly from a distal end and a projection (614) extending outwardly to a position adjacent the compressible member. First and second sheath elements (104,104a) each have a proximal end, a closed tapered distal end region (105,105a), a channel therein, and a side aperture (108,108a) at a predetermined distance from the distal tip. The needle element slidably extends through the side aperture and into the channel of the first sheath element. An implant (112) having first and second ends is coupled to the proximal ends of the first and second sheath elements respectively. The sliding button is slidable between a first resting position and a second more distal position wherein the retaining element can engage the side aperture, and wherein when so engaged the compressible member exerts a constant force on the sliding button and sheath element in a direction toward the first resting position of the sliding button.Linvention concerne un ensemble chirurgical (100) comprenant un introducteur chirurgical (102) comportant une portion-poignée (103) et un élément-aiguille (101) se prolongeant jusquà une extrémité distale libre, et un mécanisme coulissant (600) comprenant un élément compressible (610) et un bouton coulissant (602) couplé par coulissement à la portion-poignée pour un mouvement longitudinal et comportant un premier dispositif de retenue (201) se prolongeant vers lextérieur depuis une extrémité distale et une projection (614) se prolongeant vers lextérieur jusquà une position adjacente à lélément compressible. Un premier et un second élément de gaine (104,104a) comportent chacun une extr
