Abstract: A method is described for shearing a tissue wall between a first cavity and an adjacent second cavity in a human or animal body. The tissue wall has a periphery forming an edge of an opening between the first cavity and the second cavity. A first member is placed into the first cavity, such that the first member is adjacent the wall. A second member is placed in the second cavity, proximate the first member. The first and second members have materials which magnetically attract one another. The first member and the second member are placed such that there is magnetic attraction between the first member and the second member through the wall and thereby compress an overlapping portion of the wall to create pressure necrosis. The first member and the second member are connected by a thread, wherein the thread extends over the edge of the opening.

Abstract: A device for shearing tissue in a human or animal body may include a first member made of a first material and a second member made of a second material. A thread is connected to the first member and to the second member, and the first and second materials show magnetic attraction between one another. A means is provided for pulling the thread between the first and second members.

Abstract: A device for cold plasma endoscopy may include a cold plasma generating system, a catheter and electrically conductive means. The cold plasma generating system includes a gas source, an electrical source, a dielectric chamber, a first electrode surrounding the dielectric chamber and electrically connected to the electrical source. The catheter has a first lumen for carrying the cold plasma fluidly connected to the dielectric chamber at a proximal end and having an opening at a distal end for delivering the cold plasma. The electrically conductive means extend inside the first lumen. The electrical source is configured to apply a pulsed excitation signal to the first electrode. The device includes remotely actuated deployable confinement means for creating a confined space, wherein the opening of the first lumen is arranged in the confined space, the deployable confinement means allowing for confining the plasma substantially within the confined space.

Abstract: A device for shearing tissue in a human or animal body may include a first member made of a first material and a second member made of a second material. A thread is connected to the first member and to the second member, and the first and second materials show magnetic attraction between one another. A means is provided for pulling the thread between the first and second members.