Abstract: In an assemble of a balloon catheters (2, 3), there are provided an elongate lumen tube (21, 31), a balloon portion (22, 32) provided at a distal end of the elongate lumen tube (21, 31) and a terminal tool (23, 33) placed at proximal ends of the balloon catheters (2, 3). The balloon catheters (2, 3) have inner tubes (25, 35) into which a guide wire (10) is inserted, and having outer tubes (27, 37) around the inner tubes (25, 35) to be in communication with balloons (B) of the balloon portions (22, 32). The elongate lumen tubes (21, 31) join the balloon catheters (2, 3) together in integral therewith. Latitudinal cross sections of the outer tubes (27, 37) are substantially a semi-circular, fan-like or trapezoidal or oval configuration, otherwise the cross sections are a trapezoidal or rectangular configuration with one lateral side deformed into an arcuate configuration.

Abstract: In a medical treatment equipment (1), a sheath body (5) has a deformed tight coil structure in which a plurality of wire elements (7, 8) are formed triangular in cross section, and helically wound with one coil line turn alternately arranged in neighborhood of other coil line turn. An apex of the triangular cross section of the one coil line turn facing an inner diameter side of the sheath body 5, and an apex of the triangular cross section of the other coil line turn facing an outer diameter side of the sheath body 5. Lateral sides of neighboring triangular cross sections are relatively slidable each other at a mutual neighborhood side (9) in a radial direction when the sheath body (5) is bent. This prevents the sheath body (5) from developing a line gap (C) between coil line turns of the deformed tight coil structure, and protecting the sheath body (5) against a tensile load which would otherwise be applied when the sheath body (5) is curvedly bent within a somatic cavity.

Abstract: A medical guide wire (1) has a helical spring body (3), a distal end portion of which has a radiopaque helical portion (31), and an elongate core (2) placed within the helical spring body (3). The elongate core (2) has a distal end portion (21) diametrically thinned and having a proximal end portion (22) diametrically thickened. A securement portion (10) is provided in which the distal end of the helical spring body (3) and the distal end of the elongate core (2) are air-tightly bonded. A floatage chamber (5) is formed within the radiopaque helical portion (31).

Abstract: A spiral rope R for liana raising includes a core member 10 and a side member 20. The side member 20 is wound around the core member 10 in the winding direction of a twiner B1 of a liana B which grows up in the Northern Hemisphere of the earth.

Abstract: In a medical guide wire, a front end of a core member is tapered off or diametrically reduced successively as it approaches a leading end tip to form a frustoconical configuration. A helical spring and the core member are spaced to form a non-integral zone extending at least 20 mm from a front end of the diameter-reduced front end portion. An inner circumference of the helical spring and an outer circumference of the core member are concentrically secured to form a plurality of securement points aligned in the lengthwise direction at regular spans so as to enable an operator to steer the guide wire with an improved rotation-following capability.

Abstract: In a medical guide wire (1) formed by a helical hollow wire body which is arranged to retractably move against a needle tip (6), the helical hollow wire body is formed into a wire-stranded helical hollow tube (2) by stranding a multitude of wire coil elements (3). The wire coil elements (3) of a wire-stranded helical hollow tube (2) has a stranding angle (?1) of 55 degrees or less against an axial direction of the wire-stranded helical hollow tube (2), and having an angle more than plus 2 degrees or an angle less than minus 2 degrees against a knife edge angle (?2) of the needle tip (6), thus preventing the wire coil elements (3) from inadvertently hitched in the needle tip (6), and thereby enabling manipulators to a smooth insertion and pull operation so as to improve a curability when the wire-stranded helical hollow tube (2) is retractably manipulated against the needle tip (6).

Abstract: In a medical guide wire 1, a rear half of a leading bulge portion (ellipsoidal helical spring) 5 forms a truncated cone shaped front catheter engagement portion 8. An inner wall of a balloon catheter 2 forms a flared end portion 2A which absorbably fits into the front catheter engagement portion 8 due to the physical adhesion so to provisionally connect the balloon catheter 2 to the front catheter engagement portion 8. The medical guide wire 1 and the balloon catheter 2 are inserted into the blood vessel with one single step procedure when the medical guide wire 1 is introduced into the blood vessel to place the balloon portion 10 at the stricture blood vessel area (P).

Abstract: In a heat mold device 1 for a guide wire 9, the metallic mold body 2 is made from the material, the thermal expansional coefficient of which is the same of a metallic coild wire 91 to stabilize a shape-forming configuration 94. A plurality of the mold bodies 2 are arranged in a mold frame 6A to make the reverse side 22 of one mold body 2 tightly contact with the overse side 21 of other mold body 2 among the neighboring mold bodies 2. A jig arm 7A sandwiches an array of metallic mold bodies 2 and the side plate 63 to serve as a securement member 7. Upon manufacturing the guide wire 9 well-suited to the medical field, the heat mold device 1 renders it possible to make a high quality guide wire with a high productivity.

Abstract: A wire-stranded hollow coil body (1) has a multitude of coil line elements (2) stranded along a predetermined circular line to form a flexible wire tube having a central axial hollow portion (3), the flexible wire tube is stranded under a strand-turn resistant load and heat treated to remove a residual stress upon formation so as to provide a high rotation-following capability and a high straightness. Further, a method provides a way to strand the coil line elements (2) under a strand-turn resistant load while heat treating the coil line elements (2).

Abstract: In a method of making a metallic thin wire 1, one single metallic thin wire 2 is prepared to have a predetermined length with a middle portion of the one single metallic thin wire 2 as a fixed portion. Front and rear half portions of the one single metallic thin wire 2 are twisted with a tensile weight W applied to the front and rear half portions in the lengthwise direction. The one single metallic thin wire 2 is processed with a heat treatment to remove a residual stress. This provides the metallic thin wire 1 with a high rotation-following capability and high torque transmissibility, thus enabling artisans to usefully apply the metallic thin wire 1 to a main wire component 25 of a medical tool and equipment.

Abstract: In a medical guide wire (1) provided to insure a smooth insertability for an improved treatment, a distal front portion (2A) of a flexible elongation core (2) is diametrically tapered or reduced progressively as approaching a distal end (T) of the flexible elongation core (2). A non-integral region (LA) is provided to form an annual space between the flexible elongation core (2) and a helical spring tube (3) to axially extend by at least 20 mm from the distal end (T) of the flexible elongation core (2). An intermediate region (L2) and a proximal region (L3) are provided to form a group of fixedly-connected portions (P) between the flexible elongation core (2) and the helical spring tube (3). The intermediate region (L2) axially extends by 50-125 mm and the proximal region (L3) extends by 125-300 mm each from the distal end (T). Spans between the fixedly-connected portions (P) of the proximal region (L3) is greater than spans between the fixedly-connected portions (P) of the intermediate region (L2).

Abstract: In a medical guide wire 1, a helical spring 3 has a radiopaque portion defined on a front helical spring tube 31 of the helical spring 3. An elongation core 2 has a thinned portion at a distal end portion 21 and a thickened portion at a proximal end portion 22, and the distal end portion 21 of the elongation core 2 is placed within the helical spring 3, both the distal end portions of the helical spring 3 and the elongation core 2 are firmly fixed so that an outer surface of the helical spring 3 is covered by a synthetic coat 4. A flotage chamber 5 is provided in the radiopaque portion of the helical spring 3 to give a buoyancy to a distal end portion 12 which is liable to hang by its weight upon manipulating the guide wire 1 in the blood streams.

Abstract: A wire-stranded hollow coil body (1) has a multitude of coil line elements (2) stranded along a predetermined circular line to form a flexible wire tube having a central axial hollow portion (3), the flexible wire tube is stranded under a strand-turn resistant load and heat treated to remove a residual stress upon formation so as to provide a high rotation-following capability and a high straightness.

Abstract: In a balloon catheter 1 in which a dilatable balloon portion 3 is secured to a distal end of a flexible and elongated shaft portion 2, at least two radiopaque ribbon markers M1, M2 are mutually spaced and provided on an outer surface of the elongated shaft portion 2 within the balloon portion 3. An inner interval L1 and an outer interval L2 between the ribbon markers M1, M2 are measurement rules determined by two different length units. The balloon catheter 1 contributes to treating a strictured area of the cardiovascular system with the use of the ribbon markers M1, M2, thus enabling manufacturers to put a drug-eluting stent into practical use which would be supposed to prevail widely in the medical field.

Abstract: In a medical guide wire 1, a rear half of a leading bulge portion (ellipsoidal helical spring) 5 forms a truncated cone shaped front catheter engagement portion 8. An inner wall of a balloon catheter 2 forms a flared end portion 2A which absorbably fits into the front catheter engagement portion 8 due to the physical adhesion so to provisionally connect the balloon catheter 2 to the front catheter engagement portion 8. The medical guide wire 1 and the balloon catheter 2 are inserted into the blood vessel with one single step procedure when the medical guide wire 1 is introduced into the blood vessel to place the balloon portion 10 at the stricture blood vessel area (P).

Abstract: In a medical guide wire (1), a front end (2A) of the core member (2) is tapered off or diametrically reduced successively as approaching a leading end tip (4) to form a frustocone-shaped configuration (5). A helical spring (3) and the core member (2) are spaced to form a non-integral zone (L) extending at least 20 mm from a front end of the diameter-reduced front end portion (1A). An inner circumference of the helical spring (3) and an outer circumference of the core member (2) are concentrically secured to form a plurality of securement points (P) aligned in the lengthwise direction at regular spans (S) so as to enable a manipulator to a good steerability with an improved rotation-following capability.

Abstract: A medicinal liquid injection catheter includes a flexible main body, a needle-like tubular member, a medicinal liquid supply device, and a balloon. The tubular member is inserted in the main body and an end portion of the tubular member projects from a side hole provided in the main body. The medicinal liquid supply device accommodates a medicinal liquid, and is connected to the tubular member to supply the medicinal liquid through the tubular member. The balloon is attached to an outer portion of the main body and the balloon is expansible in substantially the same direction as a direction in which the portion of the tubular member projects. The medicinal liquid injection catheter additionally includes first and second guide wires. The second guide wire projects from the main body in a direction which intersects a direction in which the first guide wire projects from the main body.

Abstract: A medicinal liquid injection catheter includes a flexible main body, a needle-like tubular member, a medicinal liquid supply device, and a balloon. The tubular member is inserted in the main body and an end portion of the tubular member projects from a side hole provided in the main body. The medicinal liquid supply device accommodates a medicinal liquid, and is connected to the tubular member to supply the medicinal liquid through the tubular member. The balloon is attached to an outer portion of the main body and the balloon is expansible in substantially the same direction as a direction in which the portion of the tubular member projects. The medicinal liquid injection catheter additionally includes first and second guide wires. The second guide wire projects from the main body in a direction which intersects a direction in which the first guide wire projects from the main body.

Abstract: In a medical treatment tool (1, 1A, 1B), a flexible linear wire forms a main linear wire portion (2) provided by a wire-stranded helical hollow tube (6) coated with an outer protective layer (8). An operational core elongation (4) is slidably inserted into the main linear wire portion (2) of the wire-stranded helical hollow tube (6). A front end of the main linear wire portion (2) is connected to a front end of the operational core elongation (4), and a rear end of the operational core elongation (4) is connected to a hand access portion (5) placed at a rear end of the main linear wire portion (2). A diametrically expandable portion (3) is formed at a distal end portion of the main linear wire portion (2) by exposing the wire-stranded helical hollow tube (6) outside from the outer protective layer (8).

Abstract: In a medical guide wire (1) formed by a helical hollow wire body which is arranged to retractably move against a needle tip (6), the helical hollow wire body is formed into a wire-stranded helical hollow tube (2) by stranding a multitude of wire coil elements (3). The wire coil elements (3) of a wire-stranded helical hollow tube (2) has a stranding angle ?1) of 55 degrees or less against an axial direction of the wire-stranded helical hollow tube (2), and having an angle more than plus 2 degrees or an angle less than minus 2 degrees against a knife edge angle (?2) of the needle tip (6), thus preventing the wire coil elements (3) from inadvertently hitched in the needle tip (6), and thereby enabling manipulators to a smooth insertion and pull operation so as to improve a curability when the wire-stranded helical hollow tube (2) is retractably manipulated against the needle tip (6).