Abstract: The invention proposes a device for minimally invasive intervention in the skeletal region, in particular on the spinal column, having at least a cannula with a distal end generally bevelled in shape relative to a symmetrical axis of the cutting tool and an optical probe (endoscope) for insertion through the cavity of the cannula. The device is further characterized in that the cannula takes the form of a hollow cutting tool, in which the most distal region of the distal end comprises a cutting edge, which is incorporated into the edge of the wall of the cutting tool.

Abstract: When processing bone tissue, the work site is often out of alignment with the insertion path of a tool device. A tool device (1) is provided with an endoscope (2), through the working channel (2.1) of which a guiding part (3) and a tool part (5) guided in this can be moved with their distal ends to a distal working area. The tool part (5) has a tool shaft (5.1) with a rotating tool (5.3). In the tool device there is a secure connection between the endoscope and the guiding part, during the task, and, this connection can be established in a simple manner prior to the beginning of the task and it can also be released again in a simple manner after the task ends. The guiding part (3) is able to be connected rigidly with the endoscope (2) axially.

Abstract: In a facet joint reamer with a shank and teeth at the distal end, the distal end is widened compared with the remainder of the shank.

Abstract: A cutter for spine surgery is provided, especially for use in the area of the delicate cervical spine. The cutter includes a cylindrical cutter shank with cutter teeth formed at the distal end thereof. The cutter teeth at the distal end of the cutter shank are formed by grooves in the wall of the cutter shank. The grooves become deeper and expand from the outer radius of the cutter shank towards the distal end such that teeth narrowing towards the distal end with increasing height are formed between them. This guarantees especially gentle cutting in the area of the cervical spine, without surrounding delicate tissue being additionally jeopardized.

Abstract: The present invention refers to a premounted mechanical seal unit, particularly for a fire extinguishing pump, comprising a rotating seal ring (2), a stationary seal ring (3), the rotating seal ring (2) and the stationary seal ring (3) defining a seal gap (4) thereinbetween, an inner sleeve (5) which is connected to the rotating seal ring (2), an outer sleeve (6) which is connected to the stationary seal ring (3), and a securing element (10) which secures the outer sleeve (6) to the inner sleeve (5), wherein the inner sleeve (5) and the outer sleeve (6) in axial direction (X-X) each have a length greater than a sum of the axial lengths of the rotating seal ring (3), and wherein the inner sleeve (5) comprises a first form closure device (7) on a first axial end and a second form closure device (8) on a second axial end.

Abstract: Surgical instrument with a handpiece having a drive and with a surgical tool, which has a tube and a working part with a shaft and with a tool head, the tube of the surgical tool can be detachably connected to the handpiece by a first coupling part and the shaft of the working part can be detachably connected to a drive shaft in the form of a pin of the drive by a second coupling part simultaneously.

Abstract: A method for manufacturing bone milling cutters, wherein a milling cutter toothing (12) is created at a distal face of a tubular milling cutter shaft (10) of a bone milling cutter at a given outer diameter (D) of the milling cutter shaft (10). The following steps are carried out: determining the tube circumference (U) of the milling cutter shaft (10); ascertaining an average desired tooth height (Hgew) of the milling cutter toothing (12); ascertaining the desired tooth period length (LZ?) of the milling cutter toothing from the desired tooth height (Hgew) at given parameters of a tooth period pattern; dividing the tube circumference (U) by the desired tooth period length (LZ); rounding the results to an even number value (Qz); and dividing the tube circumference (U) by the value (Qz) in order to obtain the tooth period length (LZ).

Abstract: A retaining ring for a seal ring of a mechanical seal assembly comprises a recess (8) inserted at the side of one of its axial ends for a sealing receipt and force-fit assembly of the seal ring (2). In the recess (8), an engaging ring (10) made of a flexible material and having a corrugated profile at its inner periphery is retained, wherein at least the elevations (15) of the corrugated profile may be brought in a force-fit engagement with the outer periphery of the seal ring, when the seal ring is moved into the engaging ring by an external mounting force. Each elevation has a leading flange in direction (P) of the mounting movement having a inclination angle ?2 larger than ?1 of a lagging flange (18).

Abstract: A device and method are provided for clips or staples as an effective substitute for suture material when joining body tissue or covering body tissue with a mesh, such as is particularly used in fracture operations. The device for applying a medical lockable clip (1) in a tissue area, includes a) an automatic advancing mechanism oriented in the direction of the tissue area from a starting position and having a guide in the advancing direction for the clip, wherein the clip has two gripper teeth oriented in the advancing direction, b) a stop for the advancing mechanism, and c) a locking element displaceable with the advancing mechanism and having a locking mechanism on the clip side for locking the clip, wherein d) the locking element is displaceable together with and parallel to the advancing mechanism, and e) the stop does not limit the motion of the locking element.

Abstract: A mechanical seal assembly to be used in sterile applications comprises a pair of co-operating seal rings (2, 5), one of which is held rotationally fixed and the other of which is provided to rotate together with a rotating component, wherein one of the seal rings is axially movable and biased by a spring against the other seal ring, a retainer housing (1) at which the rotating seal ring is retained near an axial end thereof, a mounting member (12) which may be mounted rotationally fixed at the rotating member, and a rotatory force transmission device (10) for transmitting a rotatory force between the mounting member and the retainer housing. The rotatory force transmission device (10) comprises a transmitting ring (15) retained in press-fit at the retainer housing (1) near the other axial end thereof, the transmitting ring including at least one protruding engagement member (20) engaging in an aligned recess in the mounting member.

Abstract: The invention proposes a device for minimally invasive intervention in the skeletal region, in particular on the spinal column, having at least the following two elements: a cannula with a distal end generally bevelled in shape (22) relative to a symmetrical axis of the cutting tool (2); and an optical probe (endoscope) for insertion through the cavity of the cannula. The device is further characterized in that the cannula takes the form of a hollow cutting tool (2), in which the most distal region of the distal end comprises a cutting edge (26), which is incorporated into the edge of the wall of the cutting tool (2).

Abstract: A cutter for spine surgery is provided, especially for use in the area of the delicate cervical spine. The cutter includes a cylindrical cutter shank with cutter teeth formed at the distal end thereof. The cutter teeth at the distal end of the cutter shank are formed by grooves in the wall of the cutter shank. The grooves become deeper and expand from the outer radius of the cutter shank towards the distal end such that teeth narrowing towards the distal end with increasing height are formed between them. This guarantees especially gentle cutting in the area of the cervical spine, without surrounding delicate tissue being additionally jeopardized.

Abstract: A retaining ring for a seal ring of a mechanical seal assembly comprises a recess (8) inserted at the side of one of its axial ends for a sealing receipt and force-fit assembly of the seal ring (2). In the recess (8), an engaging ring (10) made of a flexible material and having a corrugated profile at its inner periphery is retained, wherein at least the elevations (15) of the corrugated profile may be brought in a force-fit engagement with the outer periphery of the seal ring, when the seal ring is moved into the engaging ring by an external mounting force. Each elevation has a leading flange in direction (P) of the mounting movement having a inclination angle ?2 larger than ?1 of a lagging flange (18).

Abstract: A mechanical seal assembly to be used in sterile applications comprises a pair of co-operating seal rings (2, 5), one of which is held rotationally fixed and the other of which is provided to rotate together with a rotating component, wherein one of the seal rings is axially movable and biased by a spring against the other seal ring, a retainer housing (1) at which the rotating seal ring is retained near an axial end thereof, a mounting member (12) which may be mounted rotationally fixed at the rotating member, and a rotatory force transmission device (10) for transmitting a rotatory force between the mounting member and the retainer housing. The rotatory force transmission device (10) comprises a transmitting ring (15) retained in press-fit at the retainer housing (1) near the other axial end thereof, the transmitting ring including at least one protruding engagement member (20) engaging in an aligned recess in the mounting member.

Abstract: A connector for a combination cable comprising at least one light guide and several electric lines has body, which can be introduced in the plugging direction into a socket and by means of which the connector can be held in the socket, a light guide holder having a light guide reception channel open at both sides and at least two contact elements in each case connectable to one of the electric lines.

Abstract: A method for manufacturing bone milling cutters, wherein a milling cutter toothing (12) is created at a distal face of a tubular milling cutter shaft (10) of a bone milling cutter at a given outer diameter (D) of the milling cutter shaft (10). The following steps are carried out: determining the tube circumference (U) of the milling cutter shaft (10); ascertaining an average desired tooth height (Hgew) of the milling cutter toothing (12); ascertaining the desired tooth period length (LZ?) of the milling cutter toothing from the desired tooth height (Hgew) at given parameters of a tooth period pattern; dividing the tube circumference (U) by the desired tooth period length (LZ); rounding the results to an even number value (Qz); and dividing the tube circumference (U) by the value (Qz) in order to obtain the tooth period length (LZ).

Abstract: A connector for a combination cable comprising at least one light guide and several electric lines has a body, which can be introduced in the plugging direction into a socket and by means of which the connector can be held in the socket, a light guide holder having a light guide reception channel open at both sides and at least two contact elements in each case connectable to one of the electric lines.

Abstract: In a facet joint reamer with a substantially cylindrical shank, teeth at the distal shank end and a handle at the proximal end, the shank and handle are separable.

Abstract: In a facet joint reamer with a shank and teeth at the distal end, the distal reamer end is widened compared with the shank diameter.