Abstract: A tissue marker for insertion into a human or animal body during a surgical procedure is described which comprises a first marker element and at least one second marker element, the first and at least one second marker element contain a biodegradable material. According to the technical solution described the first marker element comprises a hollow body containing chitosan and the second marker element is located inside the hollow body of the first marker element.

Abstract: A medical instrument (1) for reducing the blood flow through a blood vessel of a human or animal is described, having a band element (2), which is fastened to a handling unit (4) and which has a movable band portion (5), the movement of which makes it possible to change the size and/or shape of a surface area (9), which is enclosed by a loop (6) formed by the band element (2). The technical solution described is characterized in that at least one fixing means (10) is provided for at least temporarily locking the movable band portion (5), and in that, by actuation of the actuation element (8), the movable band portion (5) can be transferred in a targeted manner from the locked position to a position for increasing or decreasing the surface area (9) enclosed by the loop (6).

Abstract: Described is a medical instrument (1) for the minimally invasive removal of biological material from a human or animal body with a hollow needle (2), which, at a distal end (4) delimiting an interior (3) of the hollow needle (2), includes a peripheral edge (5) having a cutting edge, at least in sections, and with a cutting wire (6), which is arranged such that the cutting wire (6) can be moved relative to the hollow needle (2) at least partially outside the interior (3).

Abstract: The invention relates to a headlamp/camera unit, especially for medical uses, comprising at least one lamp, an especially electronic camera, a support device that supports the at least one lamp and the camera on the head of a person, and an optical sighting mechanism that projects at least one aiming mark into the image field of the camera illuminated by the lamp.