an outer shaft having an outer shaft lumen, an outer shaft distal portion, and an outer shaft distal lip;

an inner shaft having an inner shaft lumen and an inner shaft external surface;

a grabbing element attached to a distal edge of the inner shaft and having a grabbing element distal surface, a grabbing element proximal surface, a grabbing element circumferential surface, a grabbing element inner opening, and surface features disposed along at least one of the grabbing element distal surface, the grabbing element proximal surface, or the grabbing element circumferential surface,

wherein at least a portion of the outer shaft is disposed around at least a portion of the inner shaft, so as to enable relative axial movement between the inner shaft and the outer shaft, thereby facilitating positioning of the grabbing element between a first state and a second state;

wherein the grabbing element is rotatable about a central axis thereof,

wherein the central axis of the grabbing element is directed in a distally oriented direction, orthogonal to the grabbing element distal surface, and

wherein the surface features are atraumatic surface features, configured to releasably engage and grasp a tissue via the surface features, without cutting, dissecting or penetrating it, during rotational movement of the grabbing element

around its central axis, and to retain the tissue engaged therewith after rotational movement is halted.