Abstract: In order to improve the quality of the drilling process in a surgical drilling apparatus for perforating the cranium including a drill plate which can be placed upon the cranium and a drill which is guided in the drill plate, it is proposed that the drill be accommodated in a mounting which is rotatably mounted on the drill plate, said drill being displaceable along the rotational axis and being accommodated so as to be non-rotatable relative to said mounting, and in that the drill be displaceable towards the mounting against the effect of a spring.

Abstract: To design as simply as possible an implant for fixing a bone plate in an opening of a bone plate and to avoid use of a complicated applicator, it is proposed that the implant be designed as a U-shaped clip, with a bridge and two contact arms protruding transversely from the bridge, the contact arms being capable of receiving a bone plate between them and thereby fixing the clip on the bone plate with the contact arms lying against the upper side and the lower side, respectively, of the bone plate, and with at least one projection on the outer side of the bridge facing away from the contact arms for fixing the clip on the other bone plate, so that a displacement of the clip relative to the other bone plate in the longitudinal direction of the bridge is prevented in at least one direction.

Abstract: In a bipolar grasping instrument with two clamping jaws movable relative to each other, electrically isolated from one another and each connectable to a pole of an electric high-frequency voltage source, each of the clamping jaws comprising two clamping elements arranged in spaced relation to one another, forming between them a longitudinal slot and each having a clamping surface, and with a cutting device comprising a cutting element displaceable in the longitudinal slots of the clamping jaws and having a cutting edge, in order to improve the design of the drive mechanism and the operability, it is proposed that the cutting element be arranged in the longitudinal slot of the one clamping jaw such that its cutting edge is contained in the longitudinal slot between the clamping elements of this clamping jaw and does not extend beyond its clamping surfaces in the direction towards the other clamping jaw, and that the clamping elements of this clamping jaw be elastically movable relative to the cutting element o

Abstract: With an insertion catheter for inserting a vascular prosthesis into a vessel, with an elongate, substantially tubular catheter cover having a proximal and a distal end, with an outlet for the vascular prosthesis provided at the distal end, in order to make insertion of the vascular prosthesis into the vessel particularly safe and simple, in particular, to provide the vascular prosthesis with protection against twisting, it is proposed that the outlet have a cross-sectional shape differing from a circular shape, and that the cross-sectional area defined by the outlet area be smaller than the cross-sectional area of the vascular prosthesis inserted in the vessel in the opened, unexpanded state.

Abstract: In order to configure, in such a way as to be capable of being employed in a simple and secure manner and produced cost-effectively, a surgical connecting element for fixing adjacently arranged bone plates, comprising a first bearing element, a second bearing element and a coupling element, by means of which the first and second bearing element can be coupled to each other in such a way that bone plates lying between the first and second bearing element can be fixed, it is proposed that the second bearing element and the coupling element be so designed and adapted to each other that, by relative movement between the coupling element and the second bearing element transversely to a clamping direction, the bone plates are fixable between the first and the second bearing element.

Abstract: In order to reliably configure the positioning of the clip in the cartridge in any phase, even during removal, in the case of a cartridge for receiving U-shaped clips having a web and two arms projecting therefrom, with a support abutting the underside of the web and with clamping members, which abut the web laterally at least on one side and are elastically removable from this web transversely to the plane of the clip, it is proposed that additional clamping members are provided, which abut the arms laterally at least on one side and are elastically removable from these arms transversely to the plane of the clip, and which are pressed elastically against the arms independently of the clamping members abutting the web.

Abstract: In order to simplify the structure and production in the case of a surgical clip with two clamping arms, which may be swivelled relative to one another around a rotational axis and in one clamping position have a clamping region where they essentially abut one another, said clamping arms respectively having a free end and an end provided with a bearing, wherein a joint shaft defining the rotational axis is disposed in the two bearings, and with a tension element assigned to the two clamping arms and holding these under prestress in the clamping position, it is proposed that the shaft is formed by the tension element.

Abstract: In order to design a surgical, tubular-shafted instrument comprising a shaft, an operating rod mounted for displacement in the shaft, a handle part for actuating the operating rod and connecting means which connect the handle part and the shaft detachably to one another, wherein the shaft can be secured in an axial direction in an inner sleeve of the handle part by means of a locking member which is displaceable radially in the inner sleeve and dips into a recess of the shaft, the radial outward movement of this locking member being limited by a stop element which can be displaced into a position releasing the radial outward movement of the locking member, and wherein holding means are provided, by means of which the stop element can be fixed in a release position and which can be acted upon by the shaft in such a manner that this fixing can be released due to displacement of the shaft in the inner sleeve, in such a manner that the construction of such an instrument is simplified it is suggested that the hold

Abstract: In order to make an improved securing of the plastic sheath on the holder possible in a surgical tubular-shafted instrument with a shaft, at the distal end of which at least one tool is arranged on a holder which, for its part, is secured in position on the shaft, and with a plastic sheath partially covering the holder, it is suggested that the plastic sheath engage at its edge beneath projections on the holder.

Abstract: In order to be able to simplify the construction of a magazine for a surgical clip applicator comprising a receiving chamber for clips which are arranged one behind the other, are displaceable in the receiving chamber towards its open end and have two arms connected via a bridge and pivotable away from one another into an open position contrary to an elastic force and projections associated with these arms and projecting rearwards beyond the bridge, and comprising two opening tools which are located opposite one another, are movable towards one another like pincers and can be abutted on the projections of the respectively foremost clip, it is suggested that the opening tools be connected in a hinge-like manner to an advancing element displaceable in the magazine parallel to the direction of displacement of the clips and during its advancing movement in the direction towards the open end of the receiving chamber come to rest on a deflection surface of the magazine and thereby be pivoted inwards transversely to

Abstract: To design as simply as possible an implant for fixing a bone plate in an opening of a bone plate and to avoid use of a complicated applicator, it is proposed that the implant be designed as a U-shaped clip, with a bridge and two contact arms protruding transversely from the bridge, the contact arms being capable of receiving a bone plate between them and thereby fixing the clip on the bone plate with the contact arms lying against the upper side and the lower side, respectively, of the bone plate, and with at least one projection on the outer side of the bridge facing away from the contact arms for fixing the clip on the other bone plate, so that a displacement of the clip relative to the other bone plate in the longitudinal direction of the bridge is prevented in at least one direction.

Abstract: In order to reliably configure the positioning of the clip in the cartridge in any phase, even during removal, in the case of a cartridge for receiving U-shaped clips having a web and two arms projecting therefrom, with a support abutting the underside of the web and with clamping members, which abut the web laterally at least on one side and are elastically removable from this web transversely to the plane of the clip, it is proposed that additional clamping members are provided, which abut the arms laterally at least on one side and are elastically removable from these arms transversely to the plane of the clip, and which are pressed elastically against the arms independently of the clamping members abutting the web.

Abstract: In order to improve the quality of the drilling process in a surgical drilling apparatus for perforating the cranium including a drill plate which can be placed upon the cranium and a drill which is guided in the drill plate, it is proposed that the drill be accommodated in a mounting which is rotatably mounted on the drill plate, said drill being displaceable along the rotational axis and being accommodated so as to be non-rotatable relative to said mounting, and in that the drill be displaceable towards the mounting against the effect of a spring.

Abstract: In a clip applicator having a handle, a magazine mountable on the handle and containing a number of clips, and a movable actuating grip on the handle, which is in direct or indirect engagement with a clip advancing device in the magazine when the magazine is mounted on the handle, to ensure that the coupling between the actuating grip on the handle and the clip advancing device in the magazine is in any event successful when mounting the magazine, it is proposed that a locking device be arranged on the handle for locking when in a lock position the actuating grip in an engagement position in which the engagement with the clip advancing device is able to be made upon mounting the magazine and for releasing the actuating grip when in a release position.

Abstract: In the case of a U-shaped surgical clip having two arms that are connected to one another via a deformable web, in order to stabilise the inherently deformable web in the non-deformed state it is proposed that the web bears, at least in some sections, a parallel web which is fixed on either side of the web and which restricts the deformability of the web in the reinforcing section of the web in which the parallel web and web are disposed next to one another.

Abstract: A U-shaped surgical clip having two arms is provided. The arms are connected to one another via a deformable web. In order firstly to increase the application safety and secondly to simplify application, it is proposed that, via the junction point of the arms with the web, the arms comprise rearwardly projecting extensions. Interacting catches are disposed at these extensions and/or at the deformable web. The catches fix the extensions to one another and/or fix the web to these extensions when the web is deformed upon the compression of the arms and is forced against the extensions.

Abstract: In order to achieve as uniform a distribution of pressure as possible during the application to the brain of a brain spatula with a band-like strip consisting of a pliable and inherently stable material it is suggested that the strip be enveloped by a soft, elastically deformable material which projects laterally beyond the strip at the side edges of the strip and the deformability of which increases from the side edges of the strip towards the edge of the soft material.

Abstract: In order to allow a particularly small construction of a scissors-like tool for a surgical instrument with two interconnected arms which are pivotable elastically between a spread open position and a virtually closed position by engagement of a sleeve over the outside to a greater or lesser extent, this sleeve being axially displaceable relative to and engaging around the scissors-like tool, it is suggested that for forming the arms a rod consisting of elastic material have a diametric, front recess starting from its free end and followed by an additional, diametric, rear recess which is turned through 90.degree.

Abstract: In a surgical tubular-shafted instrument comprising a tubular shaft and a gripping part connected thereto, a tool pivotable about an axis of rotation extending transversely to the longitudinal axis of the shaft, and a push element in the shaft, the push element being movable by the gripping part in the longitudinal direction of the shaft and being in engagement with the tool by using projections and recesses arranged in spaced relation to the axis of rotation of the tool such that the tool is pivotable about its axis of rotation upon displacement of the push element, in order to make higher loading possible with small dimensions, it is proposed that a ring-shaped cage be arranged on the push element and surround the axis of rotation of the tool and the point of engagement of the projection and the recess, and the inside wall of the cage carry the projection or the recess of the push element.

Abstract: In a surgical instrument, in particular, a tubular-shafted instrument, comprising two grips pivotally movable relative to one another for moving two tools movable relative to one another, and a releasable locking mechanism for securing the grips in various positions moved towards one another against movement away from one another, in order to make operation with one hand possible, it is proposed that a locking lever be pivotally mounted on one grip, the free end of the locking lever being longitudinally displaceable along a displacement path on the other grip upon pivotal movement of the grips, that a toothing be arranged along the displacement path of the free end for engagement with a toothing at the free end of the locking lever such that an opening movement of the grips is prevented, and that for release of the engagement of the two toothings the displacement path be adjustable such that the toothings disengage.