A composite fiber structure with improved flexibility and responsiveness, and a method for manufacturing the same, and more particularly, through an interdigitated structure of composite fibers into which a liquid metal is injected, it is possible to have flexibility and fast responsiveness at the same time.

A composite fiber structure with improved flexibility and responsiveness, and a method for manufacturing the same, and more particularly, through an interdigitated structure of composite fibers into which a liquid metal is injected, it is possible to have flexibility and fast responsiveness at the same time.

A three-dimensionally shaped round metallic wire having a cross-section non-circular portion in a predetermined portion without performing additional processing and having specified dimensional accuracy and accuracy of form. In an intermediate step in which the round metallic wire is processed in a predetermined three-dimensional shape, a cross-section non-circular portion forming machine 20 which forms the cross-section non-circular portion having a non-circular cross-sectional shape in at least one position is included. At the time of bending, the cross-section non-circular portion is held by a wire holding portion of a bending machine 30, and the bending is performed in the predetermined three-dimensional shape. Holding the cross-section non-circular portion causes relative rotation between the cross-section non-circular portion and the wire holding portion to be suppressed as compared with a case of the cross-section circular shape. Accordingly, bending accuracy in the three-dimensional shape for the round metallic wire is improved.

A method for making spring includes providing a wire at a working plane by a wire feeding machine; shaping the wire by a first working tool based on a first structure for the spring; and shaping the wire by a second working tool based on a second structure for the spring. In particular, the first working tool and the second working tool are configured to be movable in a reversed-reciprocation way along a direction perpendicular to the working plane.

A wire feeding unit includes a pair of wire feeding portions, wherein each of the wire feeding portions includes a driving roller which is driven by rotation power, a belt which is connected to the driving roller to rotate and is brought into contact with a wire while being rotated, at least one driven rollers which are rotated by being coupled with the driving roller by the belt, and a guide portion which is placed to pressurize the belt to one side and guides a position of the belt such that the wire is moved by the belt, wherein the pair of wire feeding portions are symmetrically disposed and one of the guide portions is disposed to face the one side of the other.

A wire bending apparatus includes a base portion, a supplying portion configured to move the orthodontic wire along a length direction of the orthodontic wire, a bushing holding portion configured to hold at least a portion of a distal end of the supplied orthodontic wire to restrict the orthodontic wire from moving in a width direction of the orthodontic wire, and a bending portion which is positioned on the base portion so as to be rotatable about a rotation center axis and bends the portion of the distal end of the orthodontic wire held by the bushing holding portion to a predetermined angle with respect to a supply direction of the orthodontic wire as the bending portion is rotated.

A wire feeding unit includes a driving motor; a driving roller which rotates by a driving force of the driving motor; a plurality of driven rollers arranged such that outer circumferential surfaces thereof are positioned on a same line; a belt which interlocks the driving roller and the plurality of driven rollers and is brought into contact with a wire, which is drawn into a side of the driven rollers, on a side of the plurality of driven rollers; and a plurality of idlers which support the wire on a side in which the wire and the belt are in contact with each other and assist feeding of the wire along a feeding direction of the belt in a free-rotation state.

The present invention relates to a stent that uses a shape memory alloy wire, the stent being an expansion device installed on a part of a body lumen, which is constricted, or which has been constricted, so as to widen the passage of the lumen in response to the lesion part. The purpose of the present invention is to provide a method for manufacturing a stent using a shape memory alloy wire such that the stent maintains a high degree of conformability in a bent portion of a body lumen in which the same is inserted while substantially improving rigidness and durability against continuously applied fatigue, a stent manufactured thereby, and a jig for manufacturing the same.

The present invention relates to a stent that uses a shape memory alloy wire, the stent being an expansion device installed on a part of a body lumen, which is constricted, or which has been constricted, so as to widen the passage of the lumen in response to the lesion part. The purpose of the present invention is to provide a method for manufacturing a stent using a shape memory alloy wire such that the stent maintains a high degree of conformability in a bent portion of a body lumen in which the same is inserted while substantially improving rigidness and durability against continuously applied fatigue, a stent manufactured thereby, and a jig for manufacturing the same.

A system and a method is provided in which a CAD system receives a solid model and receives user input to select points on the surface of the solid model, to create a wire part program file based on the selected points, and to transmit the wire part program file to a bending machine. The wire part program files is configured such that the bending machine will manufacture a wire based on the wire part program file.