Abstract: The invention relates to an ablation apparatus for intracardiac treatments which comprises a high-frequency source whose power output is controlled in a power-or temperature-controlled mode. Ablation catheters which each comprise at least one energy-emitting pole can be used with the apparatus, the or each pole comprising at least one temperature sensor for measuring the temperature of a tissue. The temperature sensors of the poles are either thermistors or thermocouples. The instrument further comprises a sensor-detection system and corresponding devices by means of which the power output can be automatically regulated such that the power is regulated according to the actual catheter type. To that end, it is not necessary to use a specially coded catheter and no special manual operations are necessary for adjusting the catheter type.

Abstract: A method is described for the operation of a radiofrequency ablation instrument comprising a radiofrequency energy source having a plurality of regulatable outputs, with a plurality of electrodes being connectable to its outputs. A respective power value and/or current value representative of the power and/or the current transmitted by the radiofrequency energy source is detected for each output. The voltage delivered from the radiofrequency energy source is regulated in dependence on the detected power value and/or current value in such a way that the latter corresponds substantially to a predetermined power value and/or current value. A predetermined phrase relationship is in each case maintained between the currents or between the voltages at the outputs of the radiofrequency energy source. Furthermore, a corresponding apparatus is described.

Abstract: The ablation catheter with a plurality of poles is used for the intracardial treatment of heart tissue. It has connectors for electrical connections to an HF generator and to an ECG measuring apparatus. At least two poles are connected via a condenser. This condenser is selected in such a manner that an HF energy output via the two poles and an ECG pickup between these two poles are possible at the same time.

Abstract: The apparatus for a cardiological therapy, in particular an ablation apparatus, comprises an ultrasonic transducer and an applicator which is arranged at the transducer and provided for an endocardial energy output. An echocardiographic thickness measurement of the myocardium can be performed by means of the transducer. Control means are provided by means of which the energy output is metered with the applicator and can be performed in a manner matched to the measured thickness.

Abstract: The heart catheter has at least one electrode pole, which is arranged on a spreadable device at the distal end of a catheter shaft. The device comprises at least two struts manufactured from an elastic material, which can be spread out following the contours of a cavity of the heart, in particular of a vestibule. Means are provided with which the electrode pole is displaceable along a strut.

Abstract: The connection element for an outer end piece of a surgical electrode is provided for application for the surface of the body of a heart patient. It provides a mechanical and an electrical connection between the outer end piece and a connection socket. It is advantageous to use one or a plurality of electrodes for the temporary monitoring and/or stimulation of the heart activity. One indifferent electrode arranged on the surface of the body, which is preferably mounted on a baseplate of the connection element, is associated with the or each unipolar electrode.

Abstract: A device (1) serves for creating perforations, borings or perfusion channels in the heart wall (2), especially in the myocardium, for generating channels running in the heart wall (2) for supplying it with blood. So that the chest cavity need not be opened in an operation for introducing such perforations, the device (1) has a catheter (4) introducible intracardially into the heart (3), which has at least one electrode or pole on its operating end and has a connection of this electrode or pole to a high frequency generator (5). Moreover, this distal operating end has at least one needle (6) insertible into the heart wall (2) from the inside, which needle functions as a coagulation tool, so that the lumen of the channel generated by it remains open and can be supplied with fresh blood from the interior of the heart (3).

Abstract: The defibrillation electrode is intended for a temporary and epicardial use after heart operations. For the purpose of local stimulation of the surface of the heart the electrode comprises at its distal end a wire having a distal end which can be drawn out of an anchoring position. The stimulation wire or a plurality of stimulation wires is or are preformed in such a manner that it or they fractally covers or cover a global surface of influence largely uniformly and with relatively large radii of curvature. The surface of influence has a largely iso-diametral form.

Abstract: The electrical connector (1) with a socket section (2) and a plug section (3) contains a clip (4) by which the pin (5) of the plug section (3) can be clamped in the axial direction and secured against unintentional withdrawal. In addition there is protection against contact with the live parts of the connector (1) which nevertheless permits the rotation of the clip (4) so that it can be closed and opened. Essentially, the plug section (2) has a sleeve (13) which surrounds the pin (5) externally and in spaced relationship to it and is rotatable in relation to the plug section (2), which sleeve (13) is of such an axial length and inner dimensions that, with the pin (5) inserted into the clip (4), the sleeve (13) is axially movably pushed in an axial direction onto the component serving to rotate the conical section (6) of the clip (4) and at the same time is coupled thereto in the direction of rotation.

Abstract: The apparatus for performing diagnostic and/or therapeutical heart interventions comprises a catheter (1) which contains a guided catheter (2), a guiding catheter (3) surrounding the guided catheter and a guide wire (4) extending within a lumen (20) of the guided catheter. Means (7) are provided which permit a controlled change of position of the guide wire in a chamber of the heart. The catheter is a first catheter (1) whose guide wire is in connection with the distal end (30') of a second catheter (1') or can be connected thereto respectively. The second catheter can be positioned in the heart in such a manner that its distal end takes on a stationary position independent of the change in position of the guide wire.

Abstract: A method and system for therapy of cardiac arrythmias is provided which uses a directional electric field applied via ablation electrode for cardiac ablation together with an ultrasonic imaging system including an ultrasonic marking transducer mounted fixedly in the vicinity of the ablation electrode and having ultrasonic sensitivity characteristics either in the same direction as the ablation field or in some other direction determined by a certain defined angle relative to the direction of the ablation field.