Abstract: A current supply arrangement (22) is used for electrical supply of two electrodes (18, 19), as well as for mechanical force transmission in a thermofusion instrument. Due to the configuration of the two electrical conductors (23, 28) as upright arranged flat parts and the force concerned coupling thereof in an interlocking section (32), the electrical conductors (23, 28) can be used as mechanical stiffening elements, whereby a filigree, gap-free, easily and reliably sterilizable configuration is achieved. The current supply of the instrument (10) is provided via one single cable (20) only, which is provided only on one of the two jaws (11, 12).

Abstract: A coagulation instrument including an insulator unit having at least two plastic bodies between which an anchor section of an electrode is arranged. The anchor section has at least one anchor opening, preferably multiple anchor openings serving for form-fit coupling of the electrode to the insulator unit. At least one of the two plastic bodies is provided with an extension that extends into or through the anchor opening. The extension can extend into the other of the two plastic bodies. Alternatively, at least one of the two plastic bodies can comprise one or more extensions that extend at least into an anchor opening or through the anchor opening and potentially into the other of the two plastic bodies.

Abstract: A knife cartridge for use in a surgical instrument. The knife cartridge includes a blade that can be operated by a second operating element. The blade is held in a blade housing that can be transferred from a first locking position (passive position) into a second locking position (active position) by a first operating element. In the passive position the blade housing is completely located inside the cartridge housing and the blade is locked therein. In the active position the blade housing projects out of the cartridge housing. Only in the active position a locking between the blade housing and blade can be released, whereby also only then a driving connection is established between the second operating element and the blade.

Abstract: An electrosurgical instrument with first and second branches that are pivotably supported by a support pin is disclosed. The first branch has a first tissue contact surface and the second branch has a second tissue contact surface. The two tissue contact surfaces are electrically connected with an electric connection device at the first branch. The electric connection is at least partly established via a respective conductor. The second conductor is integrally formed by one single body. The second conductor has a contact section with at least one contact part in contact with an electrically conductive circumferential surface of the support pin, such that an electric rotation connection is established between the contact section and the support pin. In this manner the second conductor arranged in the first branch can establish an electric connection with the second branch via the support pin and further with the second tissue contact surface.

Abstract: An electrosurgical instrument with first and second branches pivotably arranged at a hinge is disclosed. The hinge is formed by a support pin at the second branch and a corresponding support cavity at the first branch. At one side adjacent to the hinge location at which the support pin extends into the support cavity, a knife guide cavity is provided in the second branch for a moveable guided support of a knife. Parallel to the pivot axis defined by the hinge, the knife guide cavity is arranged adjacent to an axial end of the support pin. The hinge or the hinge location formed by the hinge at which the support pin is arranged in the support cavity is only arranged on one side of the knife guide cavity viewed in a direction parallel to the pivot axis. The respective other side is free from hinge components.

Abstract: A knife cartridge for use in a surgical instrument. The knife cartridge includes a blade that can be operated by a second operating element. The blade is held in a blade housing that can be transferred from a first locking position (passive position) into a second locking position (active position) by a first operating element. In the passive position the blade housing is completely located inside the cartridge housing and the blade is locked therein. In the active position the blade housing projects out of the cartridge housing. Only in the active position a locking between the blade housing and blade can be released, whereby also only then a driving connection is established between the second operating element and the blade.

Abstract: An instrument capable of being repeatedly sterilized. The instrument has handle pieces that are configured as a housing. The housing includes housing shells that are joined to one another at butt joints without a gap. The interior of the butt joints may be completely filled with a casting compound.

Abstract: A surgical instrument having a first jaw and a second jaw arranged in a hinged manner with respect to each other. A tool is slidably supported in a longitudinal direction in a tool channel, preferably in or on the first jaw. The tool may be moved in longitudinal direction by an actuation device. The actuation device has an actuation element and a drive element that are pivotably supported around a pivot axis, preferably on the first jaw. A rotational coupling may be established between the actuation element and the drive element via a coupling device.

Abstract: An operation device for operating a tool of a surgical instrument. The operation device has an operation element that is pivotably supported between an initial position and a working position. The operation element is movably coupled with the tool by means of a coupling device comprising a coupling link or consisting of a coupling link. The coupling link is elastically deformable and effectuates a resetting torque due to the elastic deformation in case the operation element is deflected out of the initial position, wherein the resetting torque urges the operation element back in the initial position.

Abstract: An instrument (10) that comprises a cartridge seat (24) for a knife cartridge (25). The knife cartridge (25) holds a knife (30), preferably in protected safe position in which the blade (32) of the knife (30) is reliably retained inside the housing (26) of the knife cartridge (25) during non-use, particularly if the knife cartridge (25) is not inserted in the sealing instrument (10). This concept leads to increased handling safety for the medical staff.

Abstract: An electrosurgical instrument with first and second branches pivotably arranged at a hinge is disclosed. The hinge is formed by a support pin at the second branch and a corresponding support cavity at the first branch. At one side adjacent to the hinge location at which the support pin extends into the support cavity, a knife guide cavity is provided in the second branch for a moveable guided support of a knife. Parallel to the pivot axis defined by the hinge, the knife guide cavity is arranged adjacent to an axial end of the support pin. The hinge or the hinge location formed by the hinge at which the support pin is arranged in the support cavity is only arranged on one side of the knife guide cavity viewed in a direction parallel to the pivot axis. The respective other side is free from hinge components.

Abstract: An electrosurgical instrument with first and second branches that are pivotably supported by a support pin is disclosed. The first branch has a first tissue contact surface and the second branch has a second tissue contact surface. The two tissue contact surfaces are electrically connected with an electric connection device at the first branch. The electric connection is at least partly established via a respective conductor. The second conductor is integrally formed by one single body. The second conductor has a contact section with at least one contact part in contact with an electrically conductive circumferential surface of the support pin, such that an electric rotation connection is established between the contact section and the support pin. In this manner the second conductor arranged in the first branch can establish an electric connection with the second branch via the support pin and further with the second tissue contact surface.