A rolling bearing, in particular a ball bearing, in particular for use in a surgical instrument, which is designed for forwarding or transmitting electrical signals and has for this purpose at least one signal line or signal path integrated in the rolling bearing. A sleeve, in particular for use in a surgical instrument, is designed for forwarding or transmitting electrical signals and has for this purpose at least one signal line or signal path integrated in the sleeve. A surgical instrument, in particular a hand-held milling cutter, includes at least one ball bearing and at least one sleeve, each having a respective method of production.

A movement transfer mechanism for a surgical scoping device, wherein a rotational proximal input force is transformed into a longitudinal force that is conveyed down the length of an instrument channel of the scoping device, where it is transformed again into an operational movement of a distal instrument. The operational movement can be rotational movement, but may be any movement that changes the orientation or configuration of the distal instrument. By conveying a linear force along the instrument channel rather than a twisting force, the problems of slipping and discontinuous operation of the distal instrument due to friction between the instrument and the instrument channel can be reduced or eliminated.

Systems and methods related to hydrodynamic bearings for use in X-ray sources are provided. In one aspect, a hydrodynamic bearing system includes a sleeve assembly including a cross-member fluidically dividing a first interior cavity from a second interior cavity, a first shaft positioned in the first interior cavity, and a second shaft positioned in the second interior cavity. The hydrodynamic bearing system may further include a first journal bearing including a first fluid interface surrounding at least a portion of the first cantilever shaft and configured to support radial loads and a second journal bearing including a second fluid interface surrounding at least a portion of the second cantilever shaft and configured to support radial loads.

An imaging system (100) includes an annular bearing (404) with an iso-center (406). The annular bearing includes a stationary side (404.sub.1) and a rotatable side (404.sub.2) with at least one alignment feature (420). The imaging system further includes a rotating gantry (410) mechanically coupled to the rotatable side. The imaging system further includes an imaging component (412, 416, 418). The imaging components includes at least one complementary alignment feature (602, 804) that is complementary to the at least one alignment feature (420, 802, 1200) of the rotatable side. The rotating gantry is between the imaging component and the rotatable side, and the imaging component is aligned with the iso-center through the at least one alignment feature and the at least one complementary alignment feature.

The invention relates to a flexible catheter (1) with a drive shaft (2), with a sleeve (6) surrounding the drive shaft (2) and with a sheath (7) surrounding the drive shaft (2) and the sleeve (6), wherein the drive shaft, the sleeve (6) and the sheath (7) are pliable, wherein the drive shaft (2) at a proximal end of the drive shaft (2) comprises a coupling element (5) for connecting the drive shaft (2) to a drive motor (18), wherein the drive shaft (2) at least regionally consist of a alloy which contains at least 10% by weight of chromium, nickel and cobalt in each case. The invention moreover relates to a blood pump arrangement with such a catheter.

A securable rail guide contains a guide rail, a runner rail arranged in the guide rail and able to travel along the guide rail, and a securing unit which is embodied to fix the runner rail in position in the guide rail in a releasable manner. A locking unit is arranged on the guide rail and is embodied to secure the runner rail in a locked position, and an unlocking unit is arranged on the runner rail. The locking unit and the unlocking unit are parts of the securing unit. The unlocking unit is operatively connected to the locking unit such that an actuation of the unlocking unit releases the runner rail to allow a free movement along the guide rail. This configuration provides a separation of the locking and unlocking mechanisms, as a result of which an independent configuration of the stability of the overall locking mechanism is possible.

In one embodiment, a rotating anode type X-ray tube comprises a fixed shaft having a first surface, a rotor, a cathode emitting electrons, and an anode target. The rotor comprises a first cylinder having a second surface, a second cylinder, and a third cylinder. A first threaded portion on an inner surface of the first cylinder and a second threaded portion on an outer peripheral surface of the third cylinder are tightened. A screw member is screwed in a third threaded portion on an inner peripheral surface of a hole which penetrates the third cylinder, and a tip portion of the screw member presses the second cylinder against the second surface.

A flexure joint apparatus includes a first fixing unit, at least one first flexure extending from the first fixing unit, and a connection member having a first head elastically supported by the at least one first flexure.

A ball and socket joint assembly is disclosed that includes a body defining a cavity, a collet disposed in the cavity to receive a ball of a connector, and an actuator shaft coupled to the collet for rotating and translating the collet in the cavity. The cavity has a distal opening to accept the ball and an engagement feature extending into the cavity. The collet has an outer diameter larger than the opening in the body when the ball is disposed in the collet, and the collet has a corresponding engagement feature around at least a portion of the outer surface for receiving the engagement feature and converting rotation of the compression member into translation of the compression member along a proximal-distal axis of the body. The collet is compressed against the opening of the cavity when the collet is advanced distally against the opening.

A bearing configuration for the rotational mounting of a component provided for rotational movement includes a positionally fixed sleeve on which the component is rotatably mounted by one or more bearing elements or a plain-bearing. A pressure element is provided in the interior of the sleeve for readily expanding the sleeve and placing the sleeve in frictional contact with the component which is spaced apart from the sleeve by an air gap. A medical examination device having the bearing configuration is also provided.