摘要:
An ablation device for cardiac tissue, in particular for forming a circular lesion around a vessel orifice in the heart, comprises a catheter which, in the region of its distal end, is provided with an abutment device for holding the distal end on a cardiac vessel orifice, and a linear ablation applicator which is disposed proximally or distally relative to the abutment device of the catheter and is movable from a straight passive position into a radially expanded, approximately circular-arc-type encircling ablation position.
摘要:
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.
摘要:
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. Rotating the sleeve (13) when the electrical connector is assembled can thus close the clip and contra-rotating it opens said clip, the conical section (6) then moving axially in relation to the sleeve but being also driven in the direction of rotation. At the same time, the sleeve (13) protects the pin (5) against undesired contact even when the connector (1) is disassembled.
摘要:
An ablation catheter arrangement includes an ablation generator, a rinsing liquid source for providing a liquid for rinsing the treatment area in which ablation is performed, and an ablation catheter connectable to the ablation generator and to the rinsing liquid source. The ablation catheter has an ablation area, at least one rinsing opening, and a rinsing bath for supplying rinsing liquid to the treatment area. A blood pressure measurement device detects the intracardiac blood pressure over the liquid column of the rinsing liquid, and communicates with the rinsing channel of the ablation catheter by fluid connection.
摘要:
Apparatus are provided for performing a procedure within a patient's body that include a tubular member including proximal and distal ends, a central axis or region extending therebetween, and a distal portion extending distally from an intermediate portion to the distal end. One or more accessory lumens and a steering element lumen extend between the proximal and distal ends, the steering element lumen offset from the central region within the distal portion such that a steering plane intersects the steering element lumen and the central axis. The distal portion includes a core member extending between the intermediate portion and the distal end, and stabilization elements embedded in the core member adjacent the accessory lumen and defining a stabilization plane that intersects the steering plane at a location offset from the central region, e.g., closer to the accessory lumen than the steering element lumen.
摘要:
An electrode catheter that includes an elongate electrode catheter body having a distal end and a proximal end, at least one electrode pole in the area of the distal end of the electrode body, and at least one supply line, which runs insulated in the electrode body in the main direction (H) from the proximal end to the distal end, to the at least one electrode pole, wherein the at least one supply line is configured to desensitize the electrode catheter to the radiation of an electromagnetic field of an interfering frequency having a specific wavelength(λ), with the supply line changing its run direction at least twice in such a way that it runs at least once opposite to the main direction (H), the distance (L1,L2) between two direction changes (R) is shorter than half of the wavelength (λ/2) of the interfering frequency.
摘要:
A device for fastening permanently or temporarily implantable medical devices includes a main body (1) having a first end (1a) and a second end (1b), a flexible and extensible body section (2) therebetween, and a first inflexible and inextensible body support (3) which is fixedly attached to the body section (2) at the second end (1b) of the main body (1), whereby the extensible section (2) can be converted from an unextended state to an extended state in which it is lengthened in comparison with the unextended state. At least one first flexible finger-shaped anchor (4) protrudes away from the main body (1) and is attached to the first body support (3) at an anchor mount (4a). At least one first flexible retraction device (5) is provided for retraction of a respective first anchoring means (4), wherein the retraction device (5) is connected to the body section (2) and to the anchor (4). On conversion of the body section (2) from the unextended state to the extended state, the retraction device (5) does not expand, so that the respective anchors (4) are moved in the direction of the main body (1).
摘要:
The invention concerns an implantable electrode which includes at least one electrical conductor having a proximal connecting region for a pulse generator and at least one working electrode which can be connected to the pulse generator by way of the conductor. The object of the invention is inter alia further to improve the compatibility of implanted electrodes. That is achieved in that the implantable electrode includes at least one portion which contains elementary magnesium.