Abstract: An endovascular device providing several elements to help mechanically break up and/or lyse a clot inside vessels and/or remove a clot via aspiration, irrigation, maceration and/or rotation, without a filter. According to some embodiments, the devices are adapted to irrigate a blood vessel during thrombectomy; to macerate an obstruction during thrombectomy, to block blood flow in a blood vessel during aspiration of a thrombus.

Abstract: Methods for removing blockages and preventing thromboembolic injuries, by advancing to a blockage a first tubular, endovascular device receiving irrigating fluid through a proximal opening, having a circumferential wall, lumen, at least one distal side hole oriented angularly to a distal opening; ejecting fluid from the side hole(s) to irrigate a blockage; introducing a second catheter for aspiration, comprising a circumferential wall having a proximal and distal opening, a flared, semi-permeable filter at the distal end for removal of emboli through the second lumen; advancing the second device to a blood vessel receiving blood from the blocked vessel, aspirating the blockage, axially rotating the first endovascular device having at least one half-loop to macerate an obstruction, capturing and removing emboli from the blockage through the second endovascular device which prevents emboli from causing further blockage of blood vessels. Variants of said method including a third rotatable device.

Abstract: The described invention provides several aspects designed to help mechanically break up a clot inside vessels and/or remove a clot via aspiration simultaneously. According to some embodiments, the devices are adapted to irrigate a blood vessel during thrombectomy; to macerate an obstruction during thrombectomy, to block blood flow in a blood vessel during aspiration of a thrombus; or to capture and remove distal emboli. With the described invention, when used to ameliorate arterial clots, irrigation and aspiration are performed simultaneously in conjunction with a balloon or occlusive catheter to reverse flow of the vessel. With the described invention, when used to ameliorate venous clots and most arterio-venous dialysis grafts, a filter-tipped aspirator is used downstream from the clot to capture and remove dislocated emboli.

Abstract: The described invention provides several aspects designed to help mechanically break up a clot inside vessels and/or remove a clot via aspiration simultaneously, and a method of using same. According to some embodiments, the devices are adapted to irrigate a blood vessel during thrombectomy; to macerate an obstruction during thrombectomy, to block blood flow in a blood vessel during aspiration of a thrombus; or to capture and remove distal emboli. With the described invention, when used to ameliorate arterial clots, irrigation and aspiration are performed simultaneously in conjunction with a balloon or occlusive catheter to reverse flow of the vessel. With the described invention, when used to ameliorate venous clots and most arteriovenous dialysis grafts, a filter-tipped aspirator is used downstream from the clot to capture and remove dislocated emboli. An optional embodiment protects the three Great Vessels of the heart, unlike the prior art.

Abstract: The described invention provides several aspects designed to help mechanically break up and/or lyse a clot inside vessels and/or remove a clot via aspiration. According to some embodiments, the devices are adapted to irrigate a blood vessel during thrombectomy; to macerate an obstruction during thrombectomy, to block blood flow in a blood vessel during aspiration of a thrombus; or to capture distal emboli.

Abstract: An apparatus for harvesting aquatic animals has a cod end portion and an elongate lengthener portion. The cod end portion has an open leading end and a closed trailing end and side wall(s), the side wall(s) and the trailing end being substantially impervious to water. The elongate lengthener portion has a leading end, a trailing end, and side wall(s), at least a major part of the side wall(s) comprising a material substantially impervious to water. The trailing end of the lengthener portion is operatively connected to the leading end of the cod end portion. The elongate lengthener portion comprises a plurality of escapements through which water can pass from an interior to an exterior of the apparatus to cause a general reduction in the water flow rate inside the apparatus when the apparatus is submerged in a body of water and there is water flow relative to the apparatus.

Abstract: A fish-sorting system for sorting fish in a dragged fishing net (1), wherein the fish are actively sorted by means of a detection device (2, 3) which detects at least one size of a fish to be sorted; a processing unit which compares the size detected by the detection means (2, 3) with the desired size; and a sorting device (4) which retains fish in the fishing net (1) of a size greater than the desired size and which releases fish of a size smaller than the desired size from the fishing net (1) on the basis of the comparison between the detected size and the desired size carried out by the processing unit.

Abstract: A netting arrangement for use in trawling is described. The arrangement includes a grid portion 120 which is desirably collapsible and is formed from a plurality of loops. Each of the loops are provided with four sides, two sides having a substantially rigid nature and being separated from one another by flexible interconnectors. A netting and ramp arrangement is also described wherein the ramp assists in the selective expulsion of juvenile and small fish from the net.

Abstract: A device for reducing the catch of unwanted species of organisms in fishing trawls which allows the retention of shrimp and the escape of fish from the trawl. The device features a longer, smaller diameter cylinder nested within a shorter, larger diameter cylinder in such a way as to create a continuous escape opening around the entire circumference of the net. The trawl bag is attached to the downstream end of the outer cylinder and the trawl body is attached to the upstream end of the inner cylinder. Flow blocking plates, set at an approximate 45° angle ahead of the escape opening, create an area of reduced water flow in and around the escape opening. Fish naturally move into the slower water flow and into the escape opening. Fish then move out of the trawl. Shrimp, being weaker in their swimming abilities are unable to move into the slower water areas and are therefore carried into the trawl bag and are captured.

Abstract: A netting arrangement for use in trawling is described. The arrangement includes a grid portion 120 which is desirably collapsible and is formed from a plurality of loops. Each of the loops are provided with four sides, two sides having a substantially rigid nature and being separated from one another by flexible interconnectors. A netting and ramp arrangement is also described wherein the ramp assists in the selective expulsion of juvenile and small fish from the net.

Abstract: A device for reducing the catch of unwanted species of organisms in fishing trawls which allows the retention of shrimp and the escape of fish from the trawl. The device features a longer, smaller diameter cylinder nested within a shorter, larger diameter cylinder in such a way as to create a continuous escape opening around the entire circumference of the net. The trawl bag is attached to the downstream end of the outer cylinder and the trawl body is attached to the upstream end of the inner cylinder. Flow blocking plates, set at an approximate 45° angle ahead of the escape opening, create an area of reduced water flow in and around the escape opening. Fish naturally move into the slower water flow and into the escape opening. Fish then move out of the trawl. Shrimp, being weaker in their swimming abilities are unable to move into the slower water areas and are therefore carried into the trawl bag and are captured.

Abstract: A device (10) having a cylinder housing (12) with a bore (12a) receives a piston sleeve (14) in which a tapered bore is formed in radially movable sections extending from the piston head. A rope gripping split sleeve (16) having a tapered outer circumference and formed of separable sections which are radially movable but maintained in axial alignment is received in the tapered bore of the piston sleeve. A rope is placed in the split sleeve which is inserted in the piston sleeve and in turn in the housing bore. A valve (18) disposed in the head (14a) of the piston sleeve allows piston movement inwardly but resists outward movement of the piston, allowing a metering fluid flow providing a timed release of the rope dependent on the force level applied. In a second embodiment device (100) includes a piston rod (122) attached to the piston sleeve which extends through a guide plug (116) into a compression chamber.

Abstract: The apparatus for separating target and non-target species harvested from a waterbody includes a catch boat towable behind a trawler for towing concomitantly with a trawl net towed behind the trawler. An elongate intake conduit having first and second ends extends between the catch boat and the rearmost, that is, downstream end of the trawl net. The first end of the intake conduit is mountable to, so as to be in fluid communication with, an aperture in the trawl net, when the trawl net is submerged in the waterbody. The second end of the intake conduit is opposite the first end of the intake conduit and is mounted to the catch boat in fluid communication with a first fluid reservoir in the catch boat. Fluid containing harvest species and by-catch is urged along the intake conduit from the first end to the second end of the intake conduit so as to discharge fluid from the second end of the intake conduit into the first fluid reservoir. Fluid and by-catch are discharged from the catch boat.

Abstract: The invention concern device placed in a fishing trawl for sorting out marine species not to be caught. The device is inserted in the after part of the trawl, near the trawl bag. The device is a venturi-type narrowing (2) comprising outslip unit (11) being placed in front end of the narrowing, forming a part of the trawl. The outslip unit allows selection of marine species not to be caught. The fish to escape is directed towards the outslip unit (11).

Abstract: Acoustic devices, attached to fishing nets, reduce or avoid by-catch of marine animals during fishing operations. The acoustic devices emit a deterrent signal to a particular marine animal on actuation by the approach of the animal. At least one of the devices is an active device that detects marine animal emitted stimuli and responds with a suitable response emission.