摘要:
A catheter is provided that is capable of achieving an improvement in operability when the catheter is introduced into a human body. A guide wire port 21 is formed in a midway position, in an axial line direction, of a peripheral wall portion 23 of an outer shaft 15 of a balloon catheter 10. A core wire 30, which extends across the guide wire port 21 in the axial line direction is provided in an outer tube hole 15a of the outer shaft 15. The core wire 30 is provided with a leading end side area 31, which is further to a leading end side than the guide wire port 21, and a tapered area 32, which is provided on a base end side of the leading end side area 31. The tapered area 32 is provided continuously from the base end side of the leading end side area 31 and has a first tapered area 34, which includes a same position as the guide wire port 21 in the axial line direction, and a second tapered area 35, which is provided continuously from a base end side of the first tapered area 34. A rate of increase of a transverse cross-sectional area from the leading end side toward the base end side is larger in the first tapered area 34 than in the second tapered area 35.
摘要:
A catheter of the invention includes an elongated flexible tubular main body; a plurality of manipulation wires inserted through the tubular main body and having tips connected to a distal part of the tubular main body; a manipulation-part main body provided at a base end of the tubular main body; and a bending manipulation part. The bending manipulation part has an engagement part engaging with base ends of the manipulation wires, and individually applies pulling force to the plurality of manipulation wires through pulling operations so as to bend the distal part of the tubular main body. The bending manipulation part is provided so as to be movable with respect to the manipulation-part main body. The path lengths of the plurality of manipulation wires from the tips thereof to the engagement part are simultaneously increased or decreased when the bending manipulation part and the manipulation-part main body move relative to each other.
摘要:
A multi-lumen catheter including an elliptical cross-sectional profile configuration that enhances fluid flow rate while minimizing the average diameter of the catheter body is disclosed. In one embodiment the catheter includes an elongate catheter tube defining a plurality of lumens. At least a portion of the longitudinal length of the catheter tube may define an elliptical cross section, in turn defined by a major axis and a minor axis. In one embodiment, a ratio of the major axis to the minor axis of the elliptical cross section is between about 1.3 and about 1.4. The catheter body can define two, three, or more lumens. In one embodiment, a dual-lumen catheter tube includes an aspect ratio of about 1.1:1, and each lumen thereof includes an inner surface defined by a plurality of radii and an hourglass-shaped septum.
摘要:
[Problem] Provided is a balloon catheter in which a balloon can smoothly deflate even when being pulled. [Means for Resolution] A balloon catheter(10) includes a balloon(100) that can dilate and deflate; a hollow-shaped distal shaft(110) that communicates with the balloon and in which an inner shaft(140) is inwardly provided; a hollow-shaped intermediate shaft(120) that is connected to a proximal end side of the distal shaft so as to communicate therewith; a hollow-shaped proximal shaft (130) that overlaps a proximal end side of the intermediate shaft so as to be connected thereto and that communicates with the intermediate shaft; and a reinforcement body(150) that is extended from the proximal shaft to the distal shaft and is fixed to the proximal shaft, in which the intermediate shaft is more flexible than the distal shaft, and in an overlapped portion (121) in which the intermediate shaft and the proximal shaft overlap each other, a non-fixing portion(123) in which the intermediate shaft and the proximal shaft overlap each other without being fixed extends to a distal end side relative to a fixing portion(122) in which the intermediate shaft is fixed to the proximal shaft.
摘要:
An improved catheter is described. The catheter may have an inflation lumen reinforced with a metal support, such as a coil, to prevent collapse and deflation of the inflation lumen, while leaving a minimal impact on the size of the catheter. The catheter may be manufactured with a temperature sensing strip permanently integrated into the catheter during the manufacturing process. The temperature sensing strip is able to wirelessly send information regarding a patient's temperature to an external display, where it may be available for viewing by a care provider. Additionally, the drainage lumen of the catheter is preferably coated with a hydrophobic coating or treatment, and/or formed to include a patterned microstructure surface design, such as superhydrophobic patterned surface.
摘要:
A tubular body includes an elongated inner layer that demarcates a main lumen; a wire reinforcing layer that is formed by winding a reinforcing wire around the inner layer; a resinous elongated sub-tube that is arranged so as to extend along a longitudinal direction of the main lumen outside the wire reinforcing layer and demarcates a sub-lumen having a smaller diameter than the main lumen; a resinous outer layer that sheaths the wire reinforcing layer and the sub-tube; and a retaining wire. An operating wire is movably inserted through the sub-lumen, and has a tip connected to a distal portion of the tubular body. An operating part is operated to pull the operating wire to bend the distal portion of the tubular body. The retaining wire is sheathed by the outer layer, and winds together the sub-tube and the wire reinforcing layer. In a medical instrument (catheter), the retaining wire is in contact with a peripheral surface of the sub-tube on both an external diameter side and an outer surface of the wire reinforcing layer.
摘要:
A central access vena cava filter catheter having a multi-lumen catheter body with plural longitudinally extending parallel lumens within the single catheter body, a vena cava filter member disposed at a distal end of the catheter body and an outer sheath concentrically disposed about the multi-lumen catheter body and the vena cava filter member. The vena cava filter member may be removably coupled to the multi-lumen catheter for temporary placement and retrieval under recommended indications.