Abstract: A cannula arrangement includes a cannula support and a cannula held thereon. A distal flow-through channel end section of a flow-through channel of the cannula support has a stepped cross-sectional shape as seen in axial section, with multiple mutually different cross-sectional dimensions decreasing in the axial direction. Each one of the cross-sectional dimensions defines its own receiving section for the respective cannula to be received therein. Each one of the cross-sectional dimensions of the receiving sections is embodied to receive the cannula with a corresponding cross-sectional cannula dimension in each case.

Abstract: The invention relates to a safety needle arrangement (1) comprising a main part (2), a cannula support (6), a cannula (10), a proximal end of which is retained on a distal end (7) of the cannula support (6), an adjusting element (15) which is operatively arranged between the main part (2) and the cannula support (6), and a locking device (19) with multiple first and second locking elements (20, 21) which are engaged with one another. The first locking elements (20) are arranged in the region of a proximal end (4) of the main part (2) and are formed by projections (22) which are arranged diametrically opposite one another. The second locking elements (21) are arranged in the region of a proximal end (8) of the cannula support (6) and are formed by recesses (24) which are arranged diametrically opposite one another.

Abstract: The invention relates to a safety needle arrangement (1) comprising a main part (2), a cannula support (6), a cannula (10), a proximal end of which is retained on a distal end (7) of the cannula support (6), an adjusting element (15) which is operatively arranged between the main part (2) and the cannula support (6), and a locking device (19) with multiple first and second locking elements (20, 21) which are engaged with one another. The first locking elements (20) are arranged in the region of a proximal end (4) of the main part (2) and are formed by projections (22) which are arranged diametrically opposite one another. The second locking elements (21) are arranged in the region of a proximal end (8) of the cannula support (6) and are formed by recesses (24) which are arranged diametrically opposite one another.

Abstract: The invention relates to a medical removal unit (1) for blood, comprising a needle carrier (2), at least one cannula (3), which has a distal and a proximal cannula segment (6, 7), and a hose-shaped sleeve (4), which has a closed sleeve end (12) and an open sleeve end (11). The sleeve (4) is fastened to a proximal needle-carrier end (10) by means of the open sleeve end (11) and surrounds the proximal cannula segment (7) in a sealing manner in such a way that an accommodating chamber (13) is formed. An air removal device (14) connects the accommodating chamber (13) to the outer environment in order that air flows out of the accommodating chamber and is formed by at least one outflow channel (15) arranged or formed in the needle carrier (2).

Abstract: There is disclosed a hull for a sea-going vessel of displacement type having a flat bottomed midship section (100) of a constant cross-section which is substantially rectangular in cross section below the water line, and a converging bow portion (200) extending from said midship section, said bow portion having a curved transition (H) between the bottom (F) thereof and each hull side, the transition (C) between bottom and sides along the bilges in said midship section being relatively sharp, and in particular of radius less than 0.5 m, for example 0.025 m. The stern section (300) shape includes two propulsion arches each formed by an inclined, substantially part-cylindrical surface (S) extending from the flat bottom aft and upward to join the transom. The hull form provides a working vessel with extremely efficient roll-damping, yet sufficient transit speed for worldwide operation. The hull form can be constructed at relatively low cost, avoiding for the most part the need to form compound curves.

Abstract: There is disclosed a hull for a sea-going vessel of displacement type having a flat bottomed midship section (100) of a constant cross-section which is substantially rectangular in cross section below the water line, and a converging bow portion (200) extending from said midship section, said bow portion having a curved transition (H) between the bottom (F) thereof and each hull side, the transition (C) between bottom and sides along the bilges in said midship section being relatively sharp, and in particular of radius less than 0.5 m, for example 0.025 m. The stern section (300) shape includes two propulsion arches each formed by an inclined, substantially part-cylindrical surface (S) extending from the flat bottom aft and upward to join the transom. The hull form provides a working vessel with extremely efficient roll-damping, yet sufficient transit speed for worldwide operation. The hull form can be constructed at relatively low cost, avoiding for the most part the need to form compound curves.