Abstract: A medical instrument has an instrument insert (4) and an instrument handle (2) which are detachably connected to one another via a locking connection. A grip (24; 57) and a closure (26; 50) are provided for securing the locking connection. The closure (26; 50) may be moved into an unsecured position by movement of the grip (24; 57) as well as independently of a movement of the grip (24; 57).

Abstract: A seal (10) is used for closing-off a proximal-side access port of an access instrument into a body. It has a cap (12) having a wall (14) covering the access port and a circumferential collar (16), which can be put over an edge of the access port. At least two approximately circular-segment-shaped openings are present in the wall (14), wherein a flexible dome sits on each opening and, on the proximal side, has, compared to the circular-segment-shaped openings, a smaller entry port (26, 28).

Abstract: A medical instrument serves for creating an access for a minimally invasive intervention and has a body having a longitudinal axis. The body is assembled of at least two parts, each of said parts having edges extending along a direction of said axis. Each of said parts having edges extending along a direction of said axis. Each part has a distal section merging into a proximal section standing outwardly from said longitudinal axis. In a first position, the distal end section of the parts are joined along said edges to form a distal body with the proximal section standing away. In a second position, the proximal sections of said parts are joined along said edges to form a hollow proximal body with said distal end section spreaded outwardly. The edges are provided with interacting features which are designed to block a lateral sliding of said joined parts transversely to said edges.