Abstract: A device for establishing the penetration depth of a tubular or rod-shaped sliding part in a receiving part and to a medical handpiece using such devices. There is an adjusting element that surrounds the sliding part and which can be adjusted in the longitudinal direction of the sliding part and can be blocked in the particular position by a clamping device to establish the penetration depth of the sliding part in the receiving part. The clamping device is formed by a rocker element that is arranged between the adjusting element and the sliding part. The rocker element can be moved between a first rotational position, which allows the adjusting element to be slid in the longitudinal direction of the sliding part, and a second rotational position, which blocks the adjusting element from being slid, by rotating the adjusting element transversely to the longitudinal direction of the sliding part.

Abstract: A device for establishing the penetration depth of a tubular or rod-shaped sliding part in a receiving part and to a medical handpiece using such devices. There is an adjusting element that surrounds the sliding part and which can be adjusted in the longitudinal direction of the sliding part and can be blocked in the particular position by a clamping device to establish the penetration depth of the sliding part in the receiving part. The clamping device is formed by a rocker element that is arranged between the adjusting element and the sliding part. The rocker element can be moved between a first rotational position, which allows the adjusting element to be slid in the longitudinal direction of the sliding part, and a second rotational position, which blocks the adjusting element from being slid, by rotating the adjusting element transversely to the longitudinal direction of the sliding part.

Abstract: In order to guide at least one suture thread (10) attached to a needle (11) through the edge region of a tissue opening and to retract the respective suture thread end from the tissue opening after it has been guided through the edge region of the opening, the surgical device is provided with a rod-shaped needle accommodation and guidance device (5), in which the respective needle (11) is displaceable by means of a pushing device to a needle accommodation region at the distal end of the device by way of an intermediate space region (12), which has a respective length that corresponding at least to the thickness of the wall of the tissue opening, and an outer shape that is reduced relative to the outer shape of the needle accommodation and guidance device in order to allow unhindered movement of the respective needle (11) from the needle accommodation and needle guidance device (5) to the distal end of the device, the device being further provided with a needle accommodation region on its distal end, having a