Abstract: A method for transferring objects includes providing a medium in a reservoir, the medium containing objects; providing a substrate having an acceptor surface, the acceptor surface facing an opening of the reservoir; determining a first target focus point in the medium; and generating a first laser pulse or first laser pulse train focused onto the first target focus point. Pulse intensity of the first laser pulse or pulse train at the first target focus point and/or pulse duration of the first laser pulse or pulse train is/are chosen to generate a droplet of the medium ejected towards the acceptor surface. A center wavelength of the first laser pulse or pulse train is larger than 500 nm, larger than 650 nm, or between 0.9 ?m and 1.35 ?m. The first target focus point is determined relative to the position of at least one object of the objects.

Abstract: A needle assembly (10) for relieving a pneumothorax and/or a hemothorax, the needle assembly (10) comprising a canula (12), the canula (12) comprising: a distal end portion (20) comprising a cutting end (22) for puncturing a thoracic cavity wall (24), a proximal end portion (14) for removing a fluid or gas from a thoracic cavity (28), a first curved portion (18) between the distal end portion (20) and the proximal end portion (14), an intermediate portion (16) between the first curved portion (18) and the proximal end portion (14), and a first fixing bulge (42) arranged between the first curved portion (18) and the intermediate portion (16), wherein an outer diameter of the canula (12) at the first fixing bulge (42) is increased with respect to the diameter (D1) of the intermediate portion (16), said first fixing bulge (42) being arranged such as to be placed at or close to the inner surface (24) of the thoracic cavity wall (24i), when the canula (12) is inserted for relieving the pneumothorax, such as to pre