摘要:
A probe manipulator which has a grip device that can be held by a user in order to facilitate manipulation of a probe when the latter has been inserted into a channel of an endoscope. Connection devices are provided for releasably connecting the grip device to the probe in such a way that the probe may be rotated or displaced by rotation or displacement of the grip device. The connection device is connectable such that the probe need not be fed through the grip device, but that the grip device may be placed at any point along the length of the probe.
摘要:
An appliance for water-jet surgery is provided that includes a plurality of supply cylinder and piston arrangements in each of which is stored a working fluid that can be expelled, by means of the piston, through an outlet into a pressure conduit. At least one actuation device is provided to actuate the piston of each supply cylinder. By means of a change-over device to change the actuation from the piston of one supply cylinder to the piston of another supply cylinder, it is ensured that the working fluid can be expelled into the pressure conduit from consecutively emptying supply cylinders. As a result, an apparatus with a small structure that is achieved by simple means is disclosed.
摘要:
In surgery using monopolar HF (high frequency), there is a constant risk of patients suffering burns at the neutral electrode. The problem stems from the fact that numerous methods have been devised by which relatively high HF currents are applied for extended periods of time. The present disclosure solves said problem by providing a neutral electrode device to be used for applying an HF current to a biological tissue. The improved neutral electrode device comprises at least one latent heat accumulator for absorbing heat. Thus, heat peaks can be at least temporarily accumulated until the accumulated thermal energy can be safely released.
摘要:
An adapter is provided for a power connection element between a handle and an electrosurgical instrument to be attached to it. This provides an adapter that makes it possible to reduce organizational effort and costs in the production of electrosurgical instruments with monopolar electrodes. To this end, the adapter includes an insulating portion for adapting an insulating section of the power connection element and an electrically conductive portion for adapting at least one electrically conductive section of the power connection element. The insulating portion and the electrically conductive portion are configured in such a way that the insulating section and the electrically conductive section have their dimensions increased.
摘要:
The invention relates to an HF generator and to a method for limiting the output effective power of the HF generator, especially for performing HF surgical cutting and coagulation of human or animal tissue. According to the invention, the output voltage and the HF output current of the HF generator are detected by at least two detector devices, the peak values and the effective values of the HF output voltage and of the output current as well as the mean value of the output effective power of the HF generator are determined by an evaluation device, and the calculated mean value is compared to a defined maximum mean value of the output effective power of the HF generator by a comparison device. Afterwards, a modulation device modulates the HF output voltage using a pulse-shaped modulation signal. A control device controls the modulation device in such a manner that the pulse duration of the pulse-shaped modulation signal and/or the pulse duration between the pulse-shaped modulation signals is modified in order to keep the peak value of the output voltage constant when the calculated mean value of the output effective power is greater than the maximum mean value of the output effective power. Alternatively, the HF generator is equipped with a sensor for evaluating the intensity of electric arcs between an electrode connected to the HF generator and the tissue.
摘要:
The method disclosed herein permits the operator of an electrosurgical device to move a safety switch-off threshold for a contact resistance at a neutral electrode from a first value to a second and slightly higher value. This way, for patients with a relatively high resistance yielding a somewhat elevated contact resistance despite correct attachment of the neutral electrode, uninterrupted operation of the device is achievable.
摘要:
An appliance for water-jet surgery is provided that includes a plurality of supply cylinder and piston arrangements in each of which is stored a working fluid that can be expelled, by means of the piston, through an outlet into a pressure conduit. At least one actuation device is provided to actuate the piston of each supply cylinder. By means of a change-over device to change the actuation from the piston of one supply cylinder to the piston of another supply cylinder, it is ensured that the working fluid can be expelled into the pressure conduit from consecutively emptying supply cylinders. As a result, an apparatus with a small structure that is achieved by simple means is disclosed.
摘要:
An adapter is provided for a power connection element between a handle and an electrosurgical instrument to be attached to it. This provides an adapter that makes it possible to reduce organizational effort and costs in the production of electrosurgical instruments with monopolar electrodes. To this end, the adapter includes an insulating portion for adapting an insulating section of the power connection element and an electrically conductive portion for adapting at least one electrically conductive section of the power connection element. The insulating portion and the electrically conductive portion are configured in such a way that the insulating section and the electrically conductive section have their dimensions increased.
摘要:
A device for the treatment of human or animal tissue by means of a movable instrument is disclosed. The device comprises means for generating a magnetic stator field, in which the tissue is located. For example, the means for generating the magnetic stator field may be a magnetic resonance tomograph (MRT). At least one conductor loop is provided on or in the instrument, and a generator is provided for generating a current that flows through the conductor loop in order to generate a magnetic useful field, which, in conjunction with the stator field, generates a resulting action for applying a useful force to the instrument.
摘要:
The method disclosed herein permits the operator of an electrosurgical device to move a safety switch-off threshold for a contact resistance at a neutral electrode from a first value to a second and slightly higher value. This way, for patients with a relatively high resistance yielding a somewhat elevated contact resistance despite correct attachment of the neutral electrode, uninterrupted operation of the device is achievable.