Abstract: The invention relates to an aiming device (15) for the placement of Kirschner-wires in orthopedics/traumatology. The aiming device (15) comprises an adjustable aiming block (10) which is displaceably attached to a forceps (20). The fixation of the aiming device at the bone (30) can be varied by clamping the forceps (20) more or less strongly. The aiming block (10) can be displaced to the periost (31) and be fixed. The aiming device (15) according to the invention allows the alignment of the guidance (2) of the Kirschner-wire (1) about an axis of rotation (12). Before the Kirschner-wire (1) is inserted in the bone (30) its position and direction can be intraoperatively represented and aligned in at least two non-parallel planes of projection (P1, P2) by means of fluoroscopy and/or navigation. Repeated drilling and mistaken positioning of the Kirschner-wire (1) can so be avoided. Thus, allowing to reduce the time of operation and the exposure of the patient to radiation.

Abstract: The invention relates to an aiming device (15) for the placement of Kirschner-wires in orthopaedics/traumatology. The aiming device (15) comprises an adjustable aiming block (10) which is displaceably attached to a forceps (20). The fixation of the aiming device at the bone (30) can be varied by clamping the forceps (20) more or less strongly. The aiming block (10) can be displaced to the periost (31) and be fixed. The aiming device (15) according to the invention allows the alignment of the guidance (2) of the Kirschner-wire (1) about an axis of rotation (12). Before the Kirschner-wire (1) is inserted in the bone (30) its position and direction can be intraoperatively represented and aligned in at least two non-parallel planes of projection (P1, P2) by means of fluoroscopy and/or navigation. Repeated drilling and mistaken positioning of the Kirschner-wire (1) can so be avoided. Thus, allowing to reduce the time of operation and the exposure of the patient to radiation.

Abstract: An aiming device for insertion of a Kirschner-wire to treat a target bone, comprises an aiming block permitting placement of a Kirschner-wire against the target bone and a forceps connected to the aiming block, the forceps being configured to clamp to the target bone.

Abstract: A cannula (1) comprising A) a central axis (2), a front end (3), a rear end (4) and a channel (5) coaxial or parallel to said central axis (2) and defining a peripheral wall (12) of said cannula (1); B) referencing means (15) at said rear end (4), so that said cannula (1) can be brought in a desired position relative to a cavity (120) in a bone; wherein C) said cannula (1) further comprises at least two perforations (8) penetrating said peripheral wall (12) transversely to said central axis (2); and D) said at least two perforations (8) are arranged in a portion (16) of said peripheral wall (12) which extends over an arc (18) orthogonal to said central axis (2) with a central angle ?<270°.

Abstract: Method and device for determining the local mechanical resistance inside of a porous body having a variable density and/or porosity, in particular inside of a porous bone structure comprising the following steps: selecting a site of said porous body destined to receive a fixation element, in particular a screw or a bone implant; drilling a hole into said porous body; and measuring a mechanical parameter of the porous structure surrounding said drilled hole by inserting a suitable tool (1) into said drill hole.

Abstract: A cannula (1) comprising A) a central axis (2), a front end (3), a rear end (4) and a channel (5) coaxial or parallel to said central axis (2) and defining a peripheral wall (12) of said cannula (1); B) referencing means (15) at said rear end (4), so that said cannula (1) can be brought in a desired position relative to a cavity (120) in a bone; wherein C) said cannula (1) further comprises at least two perforations (8) penetrating said peripheral wall (12) transversely to said central axis (2); and D) said at least two perforations (8) are arranged in a portion (16) of said peripheral wall (12) which extends over an arc (18) orthogonal to said central axis (2) with a central angle ?<270°.

Abstract: An aiming device for insertion of a Kirschner-wire to treat a target bone, comprises an aiming block permitting placement of a Kirschner-wire against the target bone and a forceps connected to the aiming block, the forceps being configured to clamp to the target bone.

Abstract: A method for applying bone cement into a bone structure that includes the steps of: selecting at least one region in a bone where the trabecular bone structure is to be augmented, producing at least one cavity (20) communicating with said at least one bone region, applying a fluid jet lavage towards said at lest one bone region, and providing bone cement to said at least one bone region.

Abstract: Method and device for determining the local mechanical resistance inside of a porous body having a variable density and/or porosity, in particular inside of a porous bone structure comprising the following steps: selecting a site of said porous body destined to receive a fixation element, in particular a screw or a bone implant; drilling a hole into said porous body; and measuring a mechanical parameter of the porous structure surrounding said drilled hole by inserting a suitable tool (1) into said drill hole.

Abstract: The invention relates to an automatic dishwasher (1) which can be operated in several operating modes (71, 72, 73, 74). The automatic dishwasher (1) proposed according to the invention can be switched from a first operating mode (71) to a second operating mode (72) only when a third operating mode (73) called kosher operation is executed. During the third operating mode (73) “Kosher operation”, the interior of the automatic dishwasher (1) is cleaned with a heated cleaning fluid whose temperature lies above the maximum temperature occurring in the normal operation of the automatic dishwasher (1). The endless conveyor belt (10) of the automatic dishwasher (1) is treated by a cleaning device (43) during the third operating mode (73) “Kosher operation”; moreover, a water tank (25) of the automatic dishwasher (1) is heated to a higher temperature than the temperature which occurs in the normal operation of the automatic dishwasher (1).

Abstract: A device to be used in combination with a surgical navigation system for defining the position of a straight line determined by an operating surgeon within a three-dimensional coordinate system in an operating theater. The devices includes a body (1) with a surface (2) and at least three markers (3) which emit waves (19) and the position of which can be determined within a three-dimensional coordinate system by a position detector belonging to the surgical navigation system. A laser (4) mounted on the body (1) emits a laser beam (5), directed away from the body (1), which has a geometrical central beam (6) and a wavelength in the visible range. The laser beam (5) is emitted in a geometrically defined position relative to the markers (3) so that the position of the central beam (6) relative to the three-dimensional coordinate system can be calculated from the previously measured positions of the markers (3) by a computer, which is also part of the surgical navigation system.

Abstract: A device for moving an X-ray apparatus embodied in the form of a C-bow (9) in a controlled manner, the C-bow (9) being mounted on a pedestal (31) provided with motor-driven rollers (3) controllable in their direction of travel in such a way that it is displaceable in parallel in relation to at least two axes (18;19) and rotatable relative to three axes (18; 19, 21), each movement of the C-bow (9) with respect to a coordinate system (29) which is stationary relative to the room being carried out via controllable drive devices (6;7;37;38). These drive devices (6; 7; 37; 38) are controlled either by means of a control device (39;48) or via a computer (23), said control device being operated either via a sterile control console or by voice control. Any positions and projections of the C-bow (9) that have once been adjusted may be stored in the computer (23), so that a desired position and projection may be reproduced again.

Abstract: A device to be used in combination with a surgical navigation system for defining the position of a straight line determined by an operating surgeon within a three-dimensional coordinate system in an operating theatre, including a body (1) with a surface (2) and at least three markers (3) which emit waves (19) and the position of which can be determined within a tree-dimensional coordinate system by a position detector belonging to the surgical navigation system. A laser (4) mounted on said body (1) emits a laser beam (5), directed away from the body (1), which has a geometrical central beam (6) and a wave length in the visible range. The laser beam (5) is emitted in a geometrically defined position in relation to the markers (3) so that the position of the central beam (6) in relation to the three-dimensional coordinate system can be calculated from the previously measured positions of said markers (3) by a computer which is also part of the surgical navigation system.

Abstract: The method concerns automatic guiding a C-arm X-ray device equipped with a motorized exact positioning unit and essentially comprises the steps of: A) determining the position of the plane of projection (2); E) measuring the position and orientation of the reference element (3) at the bone (4) or bone joint; F) referencing the position of the plane of projection (2) to the position of the reference element (3); H) measuring the actual position and orientation of the displaced bone (4); I) determining the deviation between the actual position of the reference element (3) and the position of the reference element (3) as referenced under step F); K) determining the new position of the C-arm X-ray device (1) in order to reset the plane of projection (2) as referenced under step F); and L) guiding the C-arm X-ray device (1) in the new position as determined under step K) by means of automatic controlling means.