Other

Taewoong Medical Co., Ltd.

Kyoung-Min Shin

Jae-Hyung Park

Jin-wook Jung

Woong-Hee Son

Jong-Taek Lee

Jin-Wook Jung

Soon-Hyung Hong

Chang Il Kwon

A high-frequency treatment device includes a tubular body having a front end portion and a rear end portion; an operating handle having a high-frequency port and a main push rod extending through the body, the operating handle slidably fitted to the body; a front tube having a rear end portion connected to the front end portion of the body; an auxiliary push rod rotatably connected to the main push rod, the auxiliary push rod extending into the front tube; a wire fixed to the auxiliary push rod, the wire extending through the front tube; a rotary knob rotatably attached to the body, the rotary knob configured to rotate together with the auxiliary push rod and the wire; and an arc-shaped knife fixed to the wire and connected to the high-frequency port of the operating handle via the wire, the auxiliary push rod and the main push rod.

High-frequency treatment device

Disclosed herein is a flexible self-expandable stent using shape memory alloy for expanding stenosal portions and method and apparatus for fabricating the same. The self-expandable stent using shape memory allow, comprises a first cylindrical stent member comprised of a first wire formed of super elastic shape memory alloy, the first wire being bent a large number of times while being extended upwardly and downwardly a large number of times, so the first wire forms a plurality of variable rhombic spaces by forming a plurality of intersections for causing the first wire to be intersected with itself to resist longitudinal constriction of the first cylindrical stent member and a plurality of interlocked points for causing the first wire to be interlocked with itself at spaced positions to allow longitudinal constriction of the first cylindrical stent member; and a second cylindrical stent member comprised of a second wire formed of super elastic shape memory alloy, the second wire being diagonally extended in parallel with the previously positioned first wire and passed alternately under and over the first wire so as to divide each of a plurality of rhombic spaces formed in the first cylindrical stent member into four equal parts, thereby preventing the first and second cylindrical stent members from being separated from each other.

Flexible self-expandable stent using shape memory alloy and method and apparatus for fabricating the same

A stent ( ), made of a shape-memory alloy and inserted into a stenosed vessel ( ), and a stent foundation device for inserting such a stent ( ) into a desired part ( ) of the stenosed vessel ( ) are disclosed. The stent ( ) consists of a net-structural hollow cylindrical body ( ) made by knitting one longitudinal superelastic shape-memory alloy wire while repeatedly crossing the wire at various points so as to form a plurality of diamond-shape meshes ( ). The stent foundation device consists of an actuation steel core ( ), a moveable tube ( ) and an insert tube ( ), which are received within an outside hollow tube ( ) while being axially movable within the outside tube. ( ). In the above device, an insert tip ( ) is connected to the front end of the insert tube ( ). The insert tip ( ) has a step ( ) forming a fitting end, at which the insert tip ( ) is partially fitted into the front end of the outside tube ( ) and is connected to the front end of the insert tube ( ). A thread ( ) is fixed at one end thereof to the insert tube ( ) at a position spaced apart from the step ( ) of the insert tip ( ) by a distance. The above thread ( ) holds the stent ( ) on the insert tube ( ) within the outside tube ( ).

Flexible and self-expandable stent and inserting device for such stents

Growing community of inventors

Seoul, South Korea

Kyoung-Min Shin