Abstract: Ends of an outer spiral and an inner spiral of similar dimensions but wound in opposite directions are joined to form a double spiral stent which may be covered to make it a stent graft. The dimensions are related by the formula of C=(Lw?Ls)/N where C is circumference of the spiral, Lw the length of the wire, N the number of turns and Ls the length of the spiral. Thus when length of spiral (Ls) is increased and decreased by compression and stretching, circumference (C) inversely varies with Ls, as N and Lw do not change. Ls and thus C are controlled by a control wire in a control tube attached to the ends of the double spiral being changed either by screwing male threads on the control wire into and out of female threads in the control tube.

Abstract: A device for steering J-tip guidewire through true lumen of artery to puncture site where an occlusion abuts artery wall and stylet wire in lumen of J-tip guidewire provides axis for screwing it between intimal and medial layers of artery wall and stiffens it sufficiently to transform J-tip to loop that dissects a false lumen between intimal and medial layers around occlusion to its end where tamping balloons push aside intimal layer and occlusion so false lumen and true lumen coincide allowing intimal layer to be safely pierced by stylet wire allowing blood flow through previously occluded artery segment.

Abstract: A lateral incision catheter device is described which has a first shell formed as a hollow semi-spherical surface of hard, rigid material with circumference approximately that of half a true circle, and having a longitudinal axis longer or shorter than that of a true circle, and the shell edge on each side of the longitudinal axis being a cutting surface, and with a first catheter passing through and being bonded to the first shell on the longitudinal axis of the first shell near the distal end of the first catheter and a second shell essentially the same as the first but slightly larger and bonded to the distal end of a slightly larger catheter so as to surround the first and having an opening on the longitudinal axis for the distal end of first catheter to enter and thus serve as the axis for both concentric shells.

Abstract: A device for steering J-tip guidewire through true lumen of artery to puncture site where an occlusion abuts artery wall and stylet wire in lumen of J-tip guidewire provides axis for screwing it between intimal and medial layers of artery wall and stiffens it sufficiently to transform J-tip to loop that dissects a false lumen between intimal and medial layers around occlusion to its end where tamping balloons push aside intimal layer and occlusion so false lumen and true lumen coincide allowing intimal layer to be safely pierced by stylet wire allowing blood flow through previously occluded artery segment.

Abstract: A centerboard shaped like a long board has width that spreads a vessel opening to a slit with free edges drawn against centerboard. Needle pairs are two shafts temporarily attached to needle noses located in openings at 2 mm intervals across centerboard width. Pushing a wedge between pairs spreads needle noses about 1 mm on either side of centerboard. Suture loops ends are attached to needle noses of each pair. An outboard has legs like long boards on either side of the centerboard with a foot on each leg pointing away from centerboard on either side of slit outside vessel. Needle nose housings in each foot are directly opposite needle noses. Operator turning a screw pushes needle noses through free edges and into needle nose housings where detents hold needle noses and shafts detach. Removing device from body brings suture ends outside with suture loops across slit in ideal 2×2 pattern.

Abstract: Centerboard entering vessel opening spreads it to a slit. Needle pairs in slots across centerboard width are at about 2 mm intervals inside vessel. Pushing a wedge or bridge wire between pairs spreads needle noses about 1 mm on either side of free edge of slit. Suture loop ends are attached to each pair. An outboard has legs on either side of centerboard with a foot on each leg that stands on either side of slit outside vessel. Needle nose housings in each foot are directly opposite needle noses. Operator turning a screw pushes needle noses through vessel wall overcoming resistance in calcified vessels and housings hold needle noses by detents. Removing device from body brings suture ends outside with suture loops across slit in ideal 2×2 pattern. Alternative configurations provide means of joining and cutting suture ends, with preformed knots slid to opening or clamping ends together with a clip.

Abstract: The present invention is a combination anastomosis device that both sutures and seals connections between two native body tubes and a graft—better proof against leaks than prior art of suturing alone or as some propose, by sealing. The invention is also a combination of supporting devices and methods that allow the anastomoses to be performed in seconds rather than the minutes required by present art, causing no more collateral bodily damage than percutaneous entry, requiring no time on a cardiac bypass system, either no heart stoppage or less than a minute thus potentially increasing the population who can tolerate coronary bypass as an out-patient procedure. The tract of application is not limited to coronary but includes vascular, urinary, pulmonary, alimentary, cerebral-spinal or other mammalian tract. May be manufactured of biodegradeable or biocompatible material and graft may be harvested or synthetic.

Abstract: Various cutting devices and systems are described that excise and/or incise tissue from a target site. For example, the wall of an artery and/or adventitial to the artery wall from inside the artery. According to embodiments of the invention, a lateral incision catheter device configured to be introduced intra-luminally to a pre-selected site in the body is provided, generally including a rotating first catheter, including a proximal end, a distal end and lumen positioned therebetween; a first shell to a first rotating catheter and having a cutting surface; a second shell attached to a second catheter, whereby rotation of the first rotating catheter causes the first shell to rotate with respect to the second shell so as to permit the cutting surface to cut tissue at the pre-selected site.