ASAHI INTECC CO., LTD. Patent applications |
Patent application number | Title | Published |
20160089514 | Guide Wire - A guide wire includes (1) a core shaft, (2) a coil body covering a distal end portion of the core shaft and having spirally wound multiple element wires, and (3) a distal end fixed portion by which a distal end of the core shaft is fixed to a distal end of the coil body. The distal end of the coil body includes (i) a fixed portion in which adjacent ones of the multiple element wires are fixed to each other and (ii) a gap portion in which adjacent ones of the multiple element wires are not fixed to each other to provide a gap between the adjacent ones of the multiple element wires in the gap portion, as viewed in a cross section that is perpendicular to a longitudinal axis of the guide wire. The distal end fixed portion enters into the gap portion. | 03-31-2016 |
20140364865 | PUSHER GUIDEWIRE - In a pusher guidewire, a front end coil has a free rear end that is not fixed to a first front end portion of a core shaft. By pulling the core shaft toward the rear end, the free rear end catches a gap of a partially-deployed stent. By rotating the core shaft in this state, a front end portion of the stent deployed from a front end opening of a catheter is wrapped around the outer circumference of the front end coil. Further pulling the core shaft toward the rear end with the wrapped stent retrieves the partially-deployed stent into the catheter, thereby preventing the stent from damaging the inner wall of a normal blood vessel. | 12-11-2014 |
20140324148 | PUSHER GUIDE WIRE - In a pusher guide wire, a protective film is suspended with respect to a core shaft with a distal end thereof being fitted in a distal-end holder and a proximal end thereof being fitted in a proximal-end holder. Hence, the frictional resistance generated between the protective film and a stent when the core shaft is rotated is reduced. Thus, the protective film is prevented from coming off the core shaft, the stent is prevented from being damaged, and the transmissibility of rotation of the pusher guide wire is improved. Consequently, the position where the stent is to be released is easily adjustable. | 10-30-2014 |
20140323918 | GUIDEWIRE - A coil-type guidewire includes a core shaft, a coil body, and a plurality of bonding portions that bond the core shaft and the coil body to each other. At least one loosely wound coil portion is provided in at least one of regions bounded by the bonding portions, and densely wound coil portions are disposed near the bonding portions. | 10-30-2014 |
20140236124 | CATHETER - A catheter has an intermediate layer with a constant thickness in first and second adjacent portion, and the adhesive strength between the intermediate layer and an inner layer is uniform. When the catheter is curved, the movement of a braid caused by the curving of the catheter can be uniformly suppressed within the adjacent first and second portions. Even if, when the catheter is curved, a tensile stress towards a proximal end acts upon a first outer layer at the first portion and a tensile stress towards a distal end acts upon a second outer layer at the adjacent second portion, the first and second outer layers are caught by an uneven contour of the intermediate layer by an anchor effect, so that it is possible to prevent peeling of the first and second outer layers from the intermediate layer. | 08-21-2014 |
20140214007 | SLITTED PIPE AND GUIDE WIRE USING THE SAME - A slitted pipe includes a first slit helically extending in a longitudinal direction of the slitted pipe, the first slit being divided by girders at predetermined intervals, and a second slit helically extending in the longitudinal direction with a helical direction preferably in a direction opposite from a helical direction of the first slit, and disposed at an angle to the first slit, the second slit crossing through the girders. | 07-31-2014 |
20140214006 | CATHETER - A catheter includes an inner layer, and a braid provided on an outer periphery of the inner layer. The braid includes a first wire and a second wire that are woven together. The catheter further includes a tip provided on a distal end of the inner layer and a distal end of the braid. A residual portion having a sharp shape formed at a distal end of the first wire when the first wire is cut is not left untreated, but is formed into a bulging portion. | 07-31-2014 |
20140188004 | GUIDEWIRE - A guidewire includes a linear portion, a curved portion that is provided distally of the linear portion, a boundary portion that is provided between the linear portion and the curved portion, a lubricant portion that is provided on a surface of the linear portion, and a low lubricant portion that is provided at least on a surface of the boundary portion disposed on a side of the guidewire opposite of a direction toward which the curved portion is curved, a lubricating ability of the low lubricant portion being lower than that of the lubricant portion. | 07-03-2014 |
20140163420 | GUIDEWIRE - In a guidewire, a second curved portion has a higher flexibility than a first curved portion and a third curved portion. Thus, a portion around the second curved portion can bend to a large degree. Consequently, a distal tip of the guidewire, in a state of being stuck on a side branch, can be released from the side branch and a distal region can be prevented from being rotated around the second curved portion. | 06-12-2014 |
20140142557 | GUIDEWIRE - A guidewire includes a core shaft, an outer coil body that covers an outer periphery of the core shaft, and an inner coil body that covers a distal portion of the core shaft in the outer coil body. A distal end and a proximal end of the inner coil body are free ends having no bonding portions. A bonding portion bonds the inner coil body to only one of the core shaft and the outer coil body. | 05-22-2014 |
20140046301 | CATHETER - A body of a catheter includes an inner layer, a braid, and an outer layer. The braid includes first and second wires. The first and second wires can be joined together such that the distal end portion of the first wire winds itself around a side surface of the second wire. A joint includes a first joint portion positioned at the intersection point, a second joint portion positioned beyond the first wire in a width direction of the first wire, and a third joint portion positioned beyond the second wire in a width direction of the second wire. Thus, even when the first and second wires have small thicknesses for size reduction of the braid, the first and second wires can be joined together with high joint strength by increasing the area of the second joint portion or the thickness of the third joint portion. | 02-13-2014 |
20140031796 | CATHETER - A catheter includes an inner layer, a braid, an outer layer, and a distal tip. A recessed region having a first side and a second side is formed in a distal end portion of the braid, a length of the first side being longer than the sum of a wire width of a first wire and a distance between two adjacent first wires, a length of the second side being longer than the sum of a wire width of a second wire and a distance between two adjacent second wires. The distal tip is bonded to the inner layer in the recessed region. By providing the recessed region, the number of peaks formed in the distal end portion of the braid is made smaller than that in the existing case. | 01-30-2014 |
20140031719 | GUIDEWIRE - A guidewire includes a first junction that joins a distal end of an inner coil body and a portion of a core shaft positioned a non-zero distance away from a distal end toward a proximal end; a second junction that joins a proximal end of the inner coil body and the core shaft; a third junction that joins a distal end of the outer coil body and the distal end of the core shaft; and a fourth junction that joins a proximal end of the outer coil body and the core shaft. The outer coil body includes a tapered coil portion and a uniform-diameter coil portion. The inner coil body is disposed inside the uniform-diameter coil portion of the outer coil body. The inner coil body is joined to the core shaft at only the first and second junctions but is not joined to the outer coil body. | 01-30-2014 |
20130289445 | GUIDEWIRE - A guidewire includes a core shaft including a distal end portion and a proximal end portion, an outer coil disposed so as to cover the distal end portion, and an inner coil disposed inside of the outer coil. The outer coil includes a first bent portion that is bent at a first angle in a first direction. The inner coil includes a second bent portion that is bent at a second angle in the first direction. The second angle is larger than the first angle. | 10-31-2013 |
20130152541 | WIRE ROPE - A wire rope for use in a medical procedure includes a multi-strand coil formed by twisting multiple metal wires together. In the wire rope, gaps are located between the multiple metal wires along an axis of the multi-strand coil. The gaps between the multiple metal wires include a first gap and a second gap that differ in width. | 06-20-2013 |
20130131642 | GUIDEWIRE - A guidewire includes a core wire, a coil body that covers the core wire, a tip portion that fixes a distal end of the core wire to a distal end of the coil body, and a resin layer formed on an outer peripheral surface of the core wire. A gap is provided between an outer peripheral surface of the resin layer and an inner peripheral surface of the coil body, so that the resin layer and the coil body are not in contact with each other. | 05-23-2013 |
20130110002 | GUIDEWIRE | 05-02-2013 |
20130110001 | GUIDEWIRE | 05-02-2013 |
20130046202 | GUIDEWIRE - A guidewire includes a core shaft, a hollow coil body, and a hollow resin body. The core shaft includes a distal portion, a proximal portion, and a center portion that is sandwiched between the distal portion and the proximal portion. The hollow coil body covers the distal portion when the distal portion is enclosed within the hollow coil body. The hollow resin body covers the center portion when the center portion is enclosed within the hollow resin body. The center portion has a tapered shape such that the diameter of the center portion decreases from a proximal end portion side of the center portion toward a distal end portion side of the center portion, and a rigidity of the hollow resin body is higher than a rigidity of the hollow coil body. | 02-21-2013 |
20130022952 | VASCULAR STENOSIS MODEL - A vascular stenosis model includes a stenosis region model and a transparent holding die including a groove that enables the stenosis region model to be held. The transparent holding die includes a first member and a second member that are separable from each other. In vertical sectional view of the transparent holding die, the groove is positioned at either an upper side or a lower side of a boundary between the first member and the second member. | 01-24-2013 |
20130018358 | CATHETERAANM WATANABE; NobuyoshiAACI Kasugai-shiAACO JPAAGP WATANABE; Nobuyoshi Kasugai-shi JPAANM ISHIKAWA; MasatomoAACI Seto-shiAACO JPAAGP ISHIKAWA; Masatomo Seto-shi JP - A catheter includes a proximal shaft, a distal shaft including a proximal end portion having an inner cavity into which a distal end portion of the proximal shaft is fitted, and a core wire extending through the inner cavity of the distal shaft. The core wire has a proximal end portion that is joined to a cutout portion formed in the distal end portion of the proximal shaft. Joining means are formed along a joint surface between the proximal end portion of the core wire and the cutout portion. When the joining means are divided into first joining means and second joining means along a longitudinal axis of the catheter, a length of one of the first joining means and the second joining means is larger than a length of the other of the first joining means and the second joining means. | 01-17-2013 |
20130006221 | GUIDEWIRE - A guidewire includes a core shaft, a coil body that covers the core shaft, and a joining portion formed of metal solder that couples the core shaft and the coil body. The coil body includes a tungsten wire and a noble metal plating layer that covers at least a portion of a surface of the tungsten wire. A surface of the noble metal plating layer has a first uneven shape, including at least one recess and at least one protrusion. | 01-03-2013 |
20120323145 | GUIDEWIRE - A guidewire includes a core shaft having front and rear sections including a front end portion and a rear section, respectively, an outer coil body that covers the front section, and an inner coil body that is disposed within the outer coil body between the outer coil body and the core shaft, and covers the front section. The outer coil body includes a cylindrical large-diameter section positioned adjacent the rear end portion, a cylindrical small-diameter section positioned adjacent the front end portion, and a tapered section that connects the cylindrical large-diameter section to the cylindrical small-diameter section with a connecting portion provided therebetween, the tapered section having a diameter that decreases from an end adjacent the rear end portion to an end adjacent the front end portion. The inner coil body is disposed at least in the tapered section. | 12-20-2012 |
20120310217 | GUIDEWIRE - A guidewire includes a core shaft, a coil body, and a tip portion. The coil body covers a distal end portion of the core shaft. The tip portion is formed by coupling a distal end of the coil body and a distal end of the core shaft using metal solder. The tip portion includes an outside diameter decreasing portion and a hemisphere-shaped portion. The outside diameter of the outside diameter decreasing portion decreases linearly in a direction of a distal end. The hemisphere-shaped portion is positioned at a distal end of the outside diameter decreasing portion. | 12-06-2012 |
20120297747 | ROPE WITH SPIRAL TEETH - A rope with spiral teeth includes a first rope including a first core material with a first resin covering the first core material and a second rope including a second core material with a second resin covering the second core material. The second rope is spirally wound around an outer circumferential surface of the first rope. At least one of the first resin and the second resin contains an infrared reflectance adjusting material to make a temperature rise characteristic of the first resin and a temperature rise characteristic of the second resin different from each other, and the first rope and the second rope are bonded together, preferably without adhesive. | 11-29-2012 |
20120271232 | CATHETER - A catheter includes an inner shaft having a tubular inner layer, a braid arranged on the tubular inner layer, and an outer layer made of resin and covering the braid. The catheter also includes a tubular tip attached to a front end of the inner shaft, the tubular tip has a portion that is thicker than the front end of the inner shaft, and an outer diameter that decreases toward a front end thereof. | 10-25-2012 |
20120265294 | STENT - A stent, having a central axis that extends in a longitudinal direction of the stent, includes a first strand group and a second strand group. The first strand group and the second strand group are woven together. The first strand group is wound in a right-handed spiral around the central axis and the second strand group is wound in a left-handed spiral around the central axis. A maximum diameter of first strands constituting the first strand group is different from a maximum diameter of second strands constituting the second strand group. | 10-18-2012 |
20120265100 | MEDICAL GUIDEWIRE - A guidewire includes a core shaft, an outer coiled body covering at least a portion of the core shaft, and an inner coiled body positioned between the outer coiled body and the core shaft. The inner coiled body covers the at least a portion of the core shaft and a resin material is filled between the inner coiled body and one of the outer coiled body and the core shaft to form a resin layer. Preferably, a space between the inner coiled body and the other of the outer coiled body and the core shaft is not filled with the resin material. | 10-18-2012 |
20120253321 | GUIDEWIRE - A guidewire includes a core shaft and a coil body that covers at least a distal end portion of the core shaft. Along a center line in a longitudinal-axis direction of the core shaft, the distal end portion of the core shaft has a first pre-assembly curvature with respect to a proximal end of the core shaft. Along a center line in a longitudinal-axis direction of the coil body, at least a distal end portion of the coil body has a second pre-assembly curvature with respect to a proximal end of the coil body. The first pre-assembly curvature is less than the second pre-assembly curvature. When the core shaft and the coil body are coupled to each other, a distal end portion of the guidewire has, along a center line in a longitudinal-axis direction of the guidewire, a third curvature with respect to a proximal end of the guidewire. | 10-04-2012 |
20120253319 | GUIDEWIRE - A guidewire includes a core shaft having a front end portion and a rear end portion, a helical coil in which the front end portion is inserted, and a solder part with which the front end portion and the helical coil are bonded to each other. The helical coil is formed of a wire having a plurality of grooves in a surface of the wire, the grooves being formed such that more grooves are formed along an axial direction of the wire than along a circumferential direction of the wire. | 10-04-2012 |
20120245488 | GUIDEWIRE - A guidewire includes a core shaft and a coil. The core shaft has a diameter that decreases from a proximal end portion toward a distal end portion, and the coil is wound around an outer periphery of the distal end portion. The distal end portion includes a most distal end portion that is positioned at a most distal end of the distal end portion, and an intermediate portion that is connected to the most distal end portion. The cross-sectional shape of the most distal end portion is a rectangular shape. The cross-sectional shape of the intermediate portion gradually changes from the rectangular shape to a circular shape in a direction from the most distal end portion toward the proximal end portion. The length of the most distal end portion is shorter than the length of the intermediate portion. | 09-27-2012 |
20120233976 | WIRE ROPE - A wire rope includes a rope body having a plurality of strands that are twisted, each strand including a plurality of wires. A gap between the strands of the rope body is filled with a first material that differs from a material that makes up the plurality of wires. The first material is exposed from the gap between the plurality of strands at a surface of the rope body, to define a first-material spiral portion that is spirally formed around an axial line of the rope body is formed at the surface of the rope body. | 09-20-2012 |
20120226231 | BALLOON CATHETER - A balloon catheter includes a core wire and an opening control portion. The core wire is formed of a long wire disposed in an outer shaft and includes a pushing portion. The opening control portion is provided in the outer shaft and has a control hole that communicates with an inflation lumen. The opening area of the control hole in the opening control portion is partially closed when the pushing portion of the core wire comes into contact with the control hole. | 09-06-2012 |
20120220896 | GUIDEWIRE - A guidewire includes a core shaft having a tip portion and a rear end portion, and a hollow stranded-wire body formed by twisting a plurality of strands. The core shaft includes a small-diameter portion including the tip portion and extending over a predetermined area from the tip portion toward the rear end portion, and a large-diameter portion located nearer to the rear end portion than the small-diameter portion and extending over a predetermined area in the direction from the tip portion toward the rear end portion. The small-diameter portion is inserted into the hollow stranded-wire body and covered with the hollow stranded-wire body to partially constitute an outer circumferential surface of the guide wire. | 08-30-2012 |
20120197159 | GUIDEWIRE - A guidewire includes a core shaft, and a coiled body wound around the outer circumferential surface of the core shaft. A bulged portion is provided at the tip portion of the core shaft. The front end of the coiled body is bonded to the front end of the core shaft with a bonding portion. The bonding portion is provided to enclose the bulged portion provided at the tip portion of the core shaft. | 08-02-2012 |
20120191070 | GUIDEWIRE - A guidewire includes a core shaft having a first tip portion and a first rear end portion, and a coiled body having a second tip portion and a second rear end portion and wound around the outer circumferential surface of the first tip portion. The core shaft further includes a first cylindrical portion, a second cylindrical portion, and a third cylindrical portion. The second cylindrical portion has an outer diameter larger than an outer diameter of the first cylindrical portion and smaller than the maximum diameter of the coiled body, and the third cylindrical portion has an outer diameter larger than an outer diameter of the second cylindrical portion and smaller than the maximum diameter of the coiled body. | 07-26-2012 |
20120179141 | MEDICAL GUIDEWIRE - Provided is a guidewire including a core shaft, an outer flexible tube, a stranded wire that extends parallel to the core shaft, and a hollow stranded-wire coil disposed in the outer flexible tube. The hollow stranded-wire coil is formed of multiple strands and surrounds the distal end portion of the core shaft and the stranded wire. Distal ends of the hollow stranded-wire coil, the core shaft, and the stranded wire are joined to a distal end of the outer flexible tube. | 07-12-2012 |
20120109109 | AUXILIARY DILATOR AND CATHETER ASSEMBLY HAVING THE SAME - An object of the present invention is to provide a device used in an operation using a catheter assembly and the catheter assembly having the device, which allows a hole formed in a body surface to have a minimum size and a catheter to be smoothly inserted into the body. An auxiliary dilator includes a body part having a tapered portion tapering toward a front end of the auxiliary dilator. The body part surrounds an extension part of a main dilator with a front end entry portion of the extension part protruding from the tapered portion, and a separation part attached to the body part enabling the body part to be removed from the main dilator. | 05-03-2012 |
20120103174 | HELICAL TOOTHED ROPE - A helical toothed rope includes a rope body including a first resin coating and a linear body including a second resin coating. The linear body is wound around the outer surface of the rope body, and the second resin coating is fusion-bonded to the first resin coating. | 05-03-2012 |
20120095448 | CATHETER ASSEMBLY - A catheter assembly includes a catheter and a dilator. The catheter has a first curved portion at a front end portion thereof. The dilator includes a protruding portion, a low stiffness portion, and a high stiffness portion. The protruding portion is arranged on a front end portion of the dilator. At least part of the protruding portion protrudes from a front end of the catheter when the dilator is inserted into the catheter. The low stiffness portion is arranged on a rear side of the protruding portion and at a position corresponding to the first curved portion of the catheter, and has a lower flexural stiffness than the protruding portion. The high stiffness portion is arranged on a rear side of the low stiffness portion and has a higher flexural stiffness than the low stiffness portion. | 04-19-2012 |
20120089127 | MEDICAL GUIDEWIRE - Provided is a guidewire including a core shaft, an outer flexible tube, a stranded wire that extends parallel to the core shaft, and a hollow stranded-wire coil disposed in the outer flexible tube. The hollow stranded-wire coil is formed of multiple strands and surrounds the distal end portion of the core shaft and the stranded wire. Distal ends of the hollow stranded-wire coil, the core shaft, and the stranded wire are joined to a distal end of the outer flexible tube. | 04-12-2012 |
20120089126 | MEDICAL GUIDEWIRE - Provided is a guidewire including a core shaft, an outer flexible tube, and an inner flexible tube that surrounds a distal end portion of the core shaft. The inner flexible tube is disposed in the outer flexible tube so that a distal end thereof is positioned between the distal end of the core shaft and a proximal end of the core shaft so as to be separated from the core shaft. A first joint is formed so as to join the distal end of the inner flexible tube to the core shaft. At least one second joint is formed so as to join the outer flexible tube to the inner flexible tube. The at least one second joint is positioned between the first joint and the proximal end of the core shaft. | 04-12-2012 |
20120041421 | GUIDEWIRE - A guidewire having high rotational torque transmissibility and high pushing torque transmissibility and having favorable restorability is provided. The guidewire has an outer coil having a tapered coil portion constituted by at least one strand wound to decrease an outer diameter toward a front end of a core shaft and an inner coil arranged inside the outer coil. An outer diameter on a front side of the inner coil arranged on a front side of the tapered coil portion is smaller than an outer diameter on a rear side of the inner coil. | 02-16-2012 |
20120041420 | GUIDEWIRE - A guidewire includes a core shaft and a coil body wound around an outer periphery of the core shaft. A distal end portion of the core shaft and a distal end portion of the coil body is fixed to each other to form a most distal end portion. The coil body includes a linear portion and a bent portion, the linear portion extending in a distal direction from a proximal end of the coil body, the bent portion being provided on a distal side of the liner portion. The core shaft and the coil body located in the bent portion are fixed to each other with a fixing member. | 02-16-2012 |
20120029476 | GUIDEWIRE - A guidewire includes a core shaft and a coil body wound around an outer periphery of the core shaft. A distal end portion of the core shaft and a distal end portion of the coil body are fixed to each other with a most distal end portion. The coil outer diameter of the coil body in the most distal end portion is nonuniform. | 02-02-2012 |
20110319923 | BALLOON CATHETER - An object of the present invention is to provide a balloon catheter integrated with a guidewire in which a stepped portion is prevented from being formed between a coil portion of the guidewire and a front end portion of the balloon catheter and thus crossability of the balloon catheter is improved. The balloon catheter includes a transition part made of resin that smoothly connects an external shape of an outer coil of a front end coil part and an external shape of a tip portion of a front side inner shaft. | 12-29-2011 |
20110319922 | BALLOON CATHETER - An aspect of the present invention is a balloon catheter integrated with a guidewire. An object thereof is to provide a balloon catheter allowing smooth connection between a coil portion of the guidewire and a front end portion of the balloon catheter by preventing the stepped portion from being formed therebetween and allowing the tip portion of the guidewire to sufficiently exhibit characteristics thereof without providing any additional element. The balloon catheter includes: a protruding portion formed of an inner coil which is arranged inside a front end coil part and which extends from a rear end of the front end coil part to surround a core shaft; and a front end opening part of a guidewire lumen that is provided at a front end of a catheter body and into which the protruding portion is inserted. | 12-29-2011 |
20110301501 | GUIDEWIRE - An object of the present invention is to provide a guidewire capable of measuring a lesion location present in a vascular channel, preventing perforation of a vessel or the like by improving flexibility of a lesion measuring part, measuring a lesion of a peripheral portion by improving insertability of the guidewire into the peripheral portion of a tubular organ such as a vessel, and accurately measuring a lesion location inside a vascular channel even under heartbeats. The guidewire includes a core shaft and a coiled body wound around a front end of the core shaft. The coiled body is made of a coil of strand. The coil of strand is formed by arranging a radiopaque coil of strand and a radiolucent coil of strand alternately in line and connecting them with each other. | 12-08-2011 |
20110245730 | GUIDEWIRE - An object of the present invention is to provide a guidewire preventing cracks from being generated at a hydrophilic coating agent and excellent in lubricity by securing flexibility of the hydrophilic coating agent on its surface side even in a case of using the cross-linked hydrophilic coating agent. The guidewire includes a core shaft, a coiled body provided at a tip portion of the core shaft, a most distal portion fixing a front end of the core shaft and a front end of the coiled body, and a hydrophilic coating agent coating the coiled body and the most distal portion and cross-linked by a cross-linking agent. The degree of cross-linking of the hydrophilic coating agent decreases from a side of the coiled body toward a surface side. | 10-06-2011 |
20110245729 | GUIDEWIRE - An object of the present invention is to provide a guidewire in which the movement of coils of strand is not inhibited by a hydrophilic coating agent, and flexibility of a coiled body is secured even in a case where its coiled body is coated with the hydrophilic coating agent. The guidewire includes a core shaft, a coiled body including coils of strand wound around an outer circumference of the core shaft, and a hydrophilic coating agent coating at least a part of the coiled body. At least the part of the coiled body is coated with the hydrophilic coating agent so that a gap may be formed between the coils of strand. | 10-06-2011 |
20110208092 | GUIDEWIRE - An object of the present invention is to provide a guidewire capable of obtaining a sufficient tip load, and also preventing as much as possible a distal portion from being twisted or bent. The guidewire has an outer coil and an inner coil. The outer coil has a taper coil portion with its outer diameter gradually decreasing toward the front end of the core shaft. The inner coil surrounds a distal side portion of the core shaft inside the outer coil. The rear end of the inner coil is joined only to the core shaft on the front side of a position where the taper coil portion of the outer coil has a maximal outer diameter. | 08-25-2011 |
20110178504 | MEDICAL GUIDEWIRE - There is provided a medical guidewire, which is capable of reducing the sliding resistance generated in the case of pulling the medical guidewire inside a catheter, a tubular organ or an intracorporeal tissue, and thus has favorable manipulability for a physician who performs an operation. An area between a proximal end portion of a coiled body and a core shaft is formed in streamlined shape. It is thus possible to reduce the sliding resistance generated in the case of pulling the medical guidewire inside the catheter, the tubular organ or the intracorporeal tissue. Hence it is possible to provide the medical guidewire with favorable manipulability for the physician who performs the operation. It is to be noted that the streamlined shape is preferably formed by use of a brazing material that joins the proximal end portion of the coiled body with the core shaft. | 07-21-2011 |
20110178436 | MEDICAL GUIDEWIRE - There is provided a medical guidewire which reduces the resistance with a curved guiding catheter, and has improved durability that can keep the resistance reduced for a long time. A core shaft of the medical guidewire has a second cylindrical part, with a smaller diameter than that of a coiled body, on a proximal end side of the coiled body. This second cylindrical part is coated with a hydrophilic material. Further, the hydrophilic material coated on the second cylindrical part has a larger thickness than a hydrophilic material coated on the coiled body. | 07-21-2011 |
20110160705 | GUIDEWIRE - An object of the present invention is to provide a guidewire having high safety and improved flexibility and rotation followability. This guidewire has an inner coil that surrounds a distal side portion of a core shaft, and an outer coil that surrounds the inner coil and the distal side portion of the core shaft. A front end of the outer coil and a front end of the inner coil are joined to a tip of the core shaft by a tip plug. Further, the guidewire has a coil joint that joins only the outer coil and the inner coil to each other. With this configuration, the flexibility of the inner coil is maintained. Moreover, rotation of a proximal side of the guidewire is transmitted to the inner coil not only from the core shaft but also from the outer coil. This leads to improvement in rotation followability. | 06-30-2011 |
20110160703 | GUIDEWIRE - An object of the present invention is to provide a guidewire having high safety and improved flexibility and rotation followability, and capable of directing a catheter with ease. A guidewire of the present invention has an inner coil that surrounds a distal side portion of a core shaft, and an outer coil that surrounds the inner coil and the distal side portion of the core shaft. The core shaft has a second flat part in flattened shape in substantially contact with an inner peripheral surface of the inner coil. With this configuration, the distal side portion of the guidewire is protected by a double coil structure, while having high torsional stiffness. This leads to improvement in safety and rotation followability, while allowing a catheter to be directed with ease. | 06-30-2011 |
20110144538 | GUIDEWIRE - Provided is a guidewire effectively usable for a retrograde approach. A guidewire has a body portion, and a first tip portion and a second tip portion provided at ends of the body portion. Flexural stiffnesses of the first tip portion and the second tip portion increase in a continuous or stepwise manner from the respective tips of the first and second tip portions toward the body portion. The flexural stiffness of the first tip portion is not smaller in value than the flexural stiffness of the second tip portion in first distance ranges from the respective tips of the first and second tip portions toward the body portion. The flexural stiffness of the first tip portion is smaller in value than the flexural stiffness of the second tip portion in second distance ranges beyond the respective first distance ranges of the first and second tip portions toward the body portion. | 06-16-2011 |
20110106056 | MEDICAL TUBE AND CATHETER USING THE SAME - Provided is a medical tube that is capable of preventing thrombi from adhering to the inside of a side hole thereof such that a required and sufficient opening area of the side hole is maintained, as well as of preventing a kink from being generated in, e.g., a catheter using the medical tube with the side hole. A side hole is provided through a side surface of a catheter body. A strand of a braid member in the vicinity of the side hole is covered with a resinous protective resin portion, thus being kept from exposure at the inner peripheral surface of the side hole. | 05-05-2011 |
20100318066 | MEDICAL GUIDEWIRE - Provided is a guidewire including a core shaft, an outer flexible tube, a stranded wire that is disposed parallel to a distal end portion of the core shaft, and an inner flexible tube that surrounds a distal end portion of the core shaft and the stranded wire. The inner flexible tube is disposed in the outer flexible tube so that a distal end thereof is positioned between the distal ends of the core shaft and the stranded wire and a proximal end of the core shaft so as to be separated from the distal ends of the core shaft and the stranded wire. A joint is formed so as to join the distal end of the inner flexible tube, the core shaft, and the stranded wire to each other. | 12-16-2010 |
20100318065 | MEDICAL GUIDEWIRE - Provided is a guidewire including a core shaft, an outer flexible tube, a stranded wire that extends parallel to the core shaft, and a hollow stranded-wire coil disposed in the outer flexible tube. The hollow stranded-wire coil is formed of multiple strands and surrounds the distal end portion of the core shaft and the stranded wire. Distal ends of the hollow stranded-wire coil, the core shaft, and the stranded wire are joined to a distal end of the outer flexible tube. | 12-16-2010 |
20100318001 | MEDICAL GUIDEWIRE - Provided is a guidewire including a core shaft, an outer flexible tube, and an inner flexible tube that surrounds a distal end portion of the core shaft. The inner flexible tube is disposed in the outer flexible tube so that a distal end thereof is positioned between the distal end of the core shaft and a proximal end of the core shaft so as to be separated from the core shaft. A first joint is formed so as to join the distal end of the inner flexible tube to the core shaft. At least one second joint is formed so as to join the outer flexible tube to the inner flexible tube. The at least one second joint is positioned between the first joint and the proximal end of the core shaft. | 12-16-2010 |
20100094258 | CATHETER - A catheter body includes a hollow coil whose outer and inner surfaces are coated with outer and inner resin layers. A resin tip is provided at a distal end of the catheter body. The tip has a tapered section at a distal end of the tip. Also, an axially extending braid is embedded in the catheter body and the tip to extend from the catheter body to the tip. | 04-15-2010 |
20090254107 | Catheter device - A catheter device (K, K | 10-08-2009 |
20090005706 | Medical guide wire - A medical guide wire | 01-01-2009 |
20080319419 | Medical catheter and a catheter assemble - In a medical catheter and a catheter assemble, a front opening | 12-25-2008 |
20080214959 | Medical guide wire - In a guide wire ( | 09-04-2008 |