[LEHMANN, Walter, KAYSER, Thomas, TROMMER, Martin, NASAROW, Christian] Quarzstrasse 8 63450 Hanau;Poelitzstrasse 22 04155 Leipzig;Hinrichsenstrasse 21 04105 Leipzig;Carl-Maria-von-Weber-Strasse 21 06749 Bitterfeld-Wolfen;Paul-Michael-Strasse 12-14 04179 Leipzig In a known method for producing quartz glass granules by sintering a bed of pourable SiO2 granulated material made of porous granulated material particles, the bed is heated and vitrified, forming quartz glass particles. In order to make it possible, proceeding from porous SiO2 granulated material, to continuously and cost-effectively produce transparent synthetic quartz glass granules having a low hydroxyl group content, according to the invention the vitrification of the porous granulated material particles is carried out in a vacuum or in a helium-containing atmosphere using at least one laser beam, in that the granulated material bed is produced on a carrier and is continuously moved by means of or on said carrier relative to the laser beam during vitrification, wherein the granulated material particles have a mean grain size of between 200 and 1000 μm and the laser beam is directed with glancing incidence at the granulated material bed.

[Marcel Seeber, Andreas Karguth, Christian Trommer] DE Jena The invention describes a retaining and positioning device of a surgical instrument and/or of an endoscope for minimally invasive surgery, more particularly for use within a surgical robot system, including a first axis of rotation, around which a retaining element can be rotated. The first axis of rotation always intersects with a longitudinal axis of at least one surgical instrument and/or of an endoscope in a pivotal point by means of a thrust drive being attached to the retaining element, to which thrust drive an instrument drive unit can be rotatably arranged around the pivotal point. The instrument drive unit has a telescopic arrangement via which the surgical instrument can be moved in a translational manner along the longitudinal axis thereof by means of a guide arrangement in the body in such a manner that the longitudinal axis of the surgical instrument is variably adjustable relative to the telescopic arrangement.

[KARGUTH ANDREAS, TROMMER CHRISTIAN, GUDE GERALF, ZIEGENSPECK NILS, SCHRUMPF THOMAS] DE

[ZIEGENSPECK NILS, TROMMER CHRISTIAN, GUDE GERALF, SCHRUMPF THOMAS, KARGUTH ANDREAS] DE The invention relates to an operating device (42) for a robot-assisted surgery system (10) comprising a manually actuatable operating element (124) as well as an interface (100) for attaching the operating device (42) to a holding unit (50). When attached to the holding unit (50), the operating element (124) is rotatable relative to the interface (100) about three axes of rotation (106, 114, 126) running orthogonally to each other, these three axes of rotation (106, 114, 126) intersecting in a common point of intersection (150).

[Ziegenspeck, Nils, Trommer, Christian, Gude, Geralf, Schrumpf, Thomas, Karguth, Andreas] Ernst-Ruska-Ring 23, 07745 Jena, DE

[Andreas KARGUTH, Christian TROMMER] DE Jena An instrument support device for a manipulator of a robotic surgical system, comprising: an arm having first, second and third arm elements; an interface for connecting the first arm element to the manipulator via a rotational joint; a torsional joint connecting the first and second arm elements; a first rotational joint connecting the second and third arm elements; a sliding joint connecting the third arm element to an instrument mounting for receiving a surgical instrument with a longitudinal axis; and a controller with drives for moving the arm elements and instrument mounting. The instrument mounting is connected to the third arm element via a second rotational joint, the rotational axes of the first and second rotational joints lie parallel to each other, and the longitudinal axis is guidable through a pivot point on the rotational axis of the torsional joint in an extension from the second arm element, without constraint.

[Nils Ziegenspeck, Christian Trommer, Geralf Gude, Thomas Schrumpf, Andreas Karguth] DE Jena An operating device (42) for a robot-assisted surgery system (10) comprising a manually actuatable operating element (124) as well as an interface (100) for attaching the operating device (42) to a holding unit (50). When attached to the holding unit (50), the operating element (124) is rotatable relative to the interface (100) about three axes of rotation (106, 114, 126) running orthogonally to each other, these three axes of rotation (106, 114, 126) intersecting in a common point of intersection (150).

[OTTER, Matthias, LEHMANN, Walter, HÜNERMANN,Michael, NIELSEN, Nils Christian, TROMMER, Martin] Quarzstasse 8, 63450 Hanau, DE

[ANDREAS KARGUTH, CHRISTIAN TROMMER, GERALF GUDE, NILS ZIEGENSPECK, THOMAS SCHRUMPF] DE

[SEEBER MARCEL, KARGUTH ANDREAS, TROMMER CHRISTIAN] DE