Erbe Elektromedizin Gmbh

Volker Mayer

Achim Brodbeck

Heiko Schall

Markus Schmid

Martin Georg Fritz

Daniel Schaeller

Daniel Schäller

Waldemar Wandel

Matthias Voigtländer

Rolf Weiler

Tobias Amann

Marcus Amann

Martina Düppuis

Martina Heim

Frank Straub

A probe that is particularly usable as a radio frequency ablation probe and comprises an inner cooling in order to keep the at least one electrode at the tissue wet and to avoid excessive heating. In the area of the electrode the hose wall of the hose supporting the electrode comprises an increased heat conductivity, whereas apart from that it has a comparably low heat conductivity outside of the electrode carrying distal end section. The increase of the heat conductivity in the distal end section can be achieved by reduction of the wall thickness, by selection of a suitable plastic, by arrangement of heat transfer bodies in the hose wall or by a combination of two or more of these features.

Ablation probe

An apparatus for supply of coolant, particularly COthat is preferably provided in bottles, to cryosurgical instruments. The device may be a mechanical or thermal compression device. A pump may supply the COtaken from the bottle in a buffer container with a desired operation pressure. The pressure in the gas bottle can be less than the desired operation pressure. The apparatus includes a tempering device that is configured to bring the coolant to a desired temperature, particularly a temperature that is higher than the temperature in the gas bottle or in another storage container.

Apparatus and method for supplying coolant to a medical instrument

A branch of an instrument comprising a metal part, which is embodied in one piece seamlessly, which comprises the electrode support as well as the electrode plate and connection webs. Preferably, this metal part is produced in an additive production method, for example selective laser melting (SLM). The branches are suitable for instruments for open surgery as well as for laparoscopic and flexible endoscopic instruments.

Surgical instrument comprising electrode support

A tool () for the coagulation and dissection of biological tissue including a counter-bearing () that has at least one recess () open toward the outside and/or one or more hollow chambers (). The recess () or the hollow chamber () is configured to provide a force/path elasticity characteristic curve with a plateau-like region II, V, during compression and reexpansion. The path section x in which the elasticity characteristic curve indicates the plateau II, IV preferably is as long as the tissue to be dissected is thick, and is, for example, in the range of 0.2 to 1.5 mm. As a result, the force exerted on the tissue during the cutting operation remains substantially constant in the effective work region.

Instrument for grasping, dissecting and/or coagulating biological tissue

An instrument () provided for simultaneous coagulation and dissection of tissue has tissue receptacles between the cutting electrode and the sealing electrode for the formation of tissue bulges to secure the tissue in the tool during the sealing process. In order to make it possible to form voluminous tissue bulges and to prevent their atrophy, the cutting electrode is supplied by a current limiting component, preferably in the form of a coupling capacitor. Thereby, in particular, in tissue that can be cut through easily, but which requires a long time for sealing, a high degree of process safety is achieved.

System for simultaneous tissue coagulation and tissue dissection

A branch is produced by means of an additive 3D production process for producing a metal part, which comprises at least two parts, namely a support section and a functional section. The metal part is a single-pieced part, in which the support section and the functional section are seamlessly interconnected by means of corresponding connecting webs. After the material is applied, the connecting webs are removed.

Method for producing a branch and surgical instrument comprising a tool having a branch

A surgical instrumentsuitable for sealing tissue includes a toolwith at least one branchcomprising an electrode unit, which consists of a sheet metal part. The partis anchored in a positive manner in a plastic body. Strip sections,of the metal partextend into the plastic body, encompassing openings,or slits,, through which the plastic bodyextends. A positive anchoring of the sheet metal partin the plastic bodyand minimizing of the heat introduction into the plastic bodyis thus attained. The thermal capacity of the sheet metal partand the thermal conductivity of the plastic bodyare low, so that consistently positive coagulation results are reached even after repeated use in short succession, regardless of the initial temperature of the tissue contact surfaces

Instrument for sealing vessels

A sealing instrument () including two branches () with sealing jaws () acted on by a sealing voltage preferably between 80 and 120 volts. Tissue receptacles () are separated from one another by a wall-like extension (), which at its lower edge carries a cutting electrode (), are defined between the branches (). A cutting voltage from 300 to 500 volts is applied between a branch () and the cutting electrode. When the branches are closed the grasped tissue is sealed simultaneously between the sealing jaws (and) and is severed by the cutting electrode (). Even though the tissue is severed completely; for example after 0.3 to 0.5 seconds and the sealing requires more time, the rolls of tissue grasped in the tissue receptacles () act as form-fitting protection of the vessel edges in the tool ().

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Tuebingen, Germany

Volker Mayer