摘要:
The invention relates to an implantable stent that can be used as a supporting sleeve in the region of an arterial constriction expandable in particular by means of a balloon catheter, wherein the wall of the stent is expandable and can be widened in a radial direction by virtue of the fact that the wall is formed at least in sections thereof from permanently deformable metal struts, characterised in that the stent consists of more than one tubular segment (10), wherein the segments (10) consist of metal struts (2) and wherein in each case two adjacent segments (10) are connected by at least one pair of eyelets (6) and (7), wherein the eyelets (6) and (7) are connected to each other by being embedded in plastic and in this manner the segments (10) are held together, and wherein at least one of the metal struts (2) has a predetermined breaking point in the middle segment section (40), which predetermined breaking point is produced as a result of the fact that two strut sections (3), (4) have eyelets (11), (12), respectively, which are connected to each other, likewise by being embedded in plastic, in such a manner that when a defined radial expansion is exceeded the metal struts (2) open as a consequence of the predetermined breaking point.
摘要:
The invention relates to a bipolar myocardial heart pacemaker electrode (1), consisting of a plug (2), a supply line (3), a cathode (4), an anode (5), surgical thread (7) and a fixation element (8), characterized in that the electrode (1) has an internal lumen and is freely movable on the thread (7); the thread (7) can be guided through the inner lumen of the electrode including the supply line and plug thereof, and distally supports the fixation element (8) in the form of a knot; the supply line (3) is externally insulated and has a distal cathode pole (4) tangentially arranged on the outside of the heart in the heart tissue (myocardium) in the usage position, wherein the cathode pole consists of a conically tapering coil and the supply line (3) has an anode pole (5) arranged proximally underneath the heart in the usage position.
摘要:
The invention relates to a multipolar esophageal electrode catheter that can be used for monitoring, stimulation, and cardioversion in cases of atrial fibrillation. Said catheter includes a flexible shaft (15) that has a proximal end and a distal end, and a multipolar electrode (3). The invention is characterized in that the distal end of the catheter is designed as an inflatable balloon (4) that is arranged on one side in such a way that the balloon helps orient the multipolar electrode (3) in the direction of the heart and press said electrode against the wall of the esophagus.
摘要:
The invention relates to an implantable epicardial electrode arrangement which permits measurement, monitoring, stimulation and defibrillation (cardioversion) of the human heart, in conjunction with a connectable heart pacemaker or defibrillator outside the body, and which can be easily removed at any time after use by being pulled out, wherein the electrodes fixed on the heart have a large surface area and are multipolar and can at the same time be used as sensing and stimulating electrodes; characterized in that the electrode arrangement has the shape of a tennis racket or is circular, elliptical, hexagonal, rectangular, oakleaf-shaped, star-shaped or cloverleaf-shaped and consists of at least two electrodes (1, 3) which are arranged over a large surface area, of a further electrode (2) which has at least one pole and is arranged between the electrodes (1, 3) arranged over a large surface area, and of a fixing device, wherein the defibrillation can take place between the mutually insulated poles of the electrodes (1, 3), and wherein the stimulation of the heart can take place between one of the electrodes (1 or 3) and a pole of the electrode (2).
摘要:
A device (1) for ablating or coagulating the mouth (2) or the outlet of a pulmonary vein (3) in the left atrium of a human heart (5) has a means (6) for destroying the tissue at this outlet or the mouth (2) of the pulmonary vein (3) and a guide wire (8) for guided delivery of this means (6) also with the aid of a catheter (7). To ensure that the means (6) can be applied, preferably with the aid of a pressure balloon (10), with sufficient force and precision onto the mouth (2), the guide wire (8) is magnetically fixed in the position of use, this fixing being provided by a counterpart (11), likewise with at least one magnet (12), for example in the oesophagus (13) or on the outer aspect of the pulmonary vein (3) (Fig. 2).