Abstract: A catheter includes a tubular body having a channel having its ends opening out respectively at the ends of the tubular body, injector element for injecting fluid into the channel, a tubular endpiece having a channel with ends opening out respectively at the ends of the tubular endpiece, and element for connecting the endpiece and the body together so that the end of the channel and the end of the channel are in alignment on an axis, the connection element being constituted essentially by a ring that partially covers the body and the endpiece, and being also arranged in such a manner that the connection can be broken by exerting a force couple of predetermined value respectively on the endpiece and on the body. The invention is applicable to safety catheters for performing endovascular treatments by injecting embolic fluid, for example for treating arteriovenous malfunctions.

Abstract: A catheter includes a tubular body having a channel having its ends opening out respectively at the ends of the tubular body, injector element for injecting fluid into the channel, a tubular endpiece having a channel with ends opening out respectively at the ends of the tubular endpiece, and element for connecting the endpiece and the body together so that the end of the channel and the end of the channel are in alignment on an axis, the connection element being constituted essentially by a ring that partially covers the body and the endpiece, and being also arranged in such a manner that the connection can be broken by exerting a force couple of predetermined value respectively on the endpiece and on the body. The invention is applicable to safety catheters for performing endovascular treatments by injecting embolic fluid, for example for treating arteriovenous malfunctions.

Abstract: The present invention relates to devices for closing off an aneurysm 1 or the like in a blood vessel 2 such as an artery. The device of the invention comprises a catheter 10 suitable for sliding in translation in the blood vessel 2, a set of rings 11, 12, 13, ... substantially all of the same diametral section, each ring being suitable for deploying radially between first and second section values that are respectively less than and substantially equal to the inside section of the blood vessel, the set of rings 11-13 being engaged on the catheter 10 when the rings are in the configuration in which their section has the first value, the rings being substantially touching, a flexible and elastic sheath 15 surrounding and touching the set of rings 11-13, and means 16 for controlling radial deployment of the rings to bring their section from the first value to the second value. The device is particularly suitable for treating cerebral aneurysms.