Braided Or Woven Strands Surrounding Lumen Patents (Class 604/527)
  • Patent number: 10821267
    Abstract: Devices, systems, and methods are disclosed that help deliver catheters or other medical devices to locations within a patient's body. The device comprises a transporter catheter having a proximal end and a distal end, at least a first balloon located at the distal end, substantially at a tip of the transporter catheter, and at least a second balloon located between the distal end and the proximal end of the transporter catheter. The first balloon is an orienting balloon and the second balloon is an anchor balloon. The transporter catheter may include a single lumen or more than one lumen. The transporter catheter may include a shaft comprising an inner layer and an outer layer, the inner layer may be made of a material more flexible than the material of the outer layer. The outer layer may also comprise a braided-wire assembly, said braided-wire assembly being formed by braiding a plurality of flat wires or circular wires. The braided-wire assembly may wrap around the inner layer.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: November 3, 2020
    Assignee: VASOINNOVATIONS INC.
    Inventors: Rajendra Gurudas Sardesai, Samir Bipin Pancholy, Tejas Madhusudan Patel
  • Patent number: 10821273
    Abstract: Devices, systems, and methods are disclosed that help deliver catheters or other medical devices to locations within a patient's body. The device includes a transporter catheter having a proximal end and a distal end, at least a first balloon located at the distal end, substantially at a tip of the transporter catheter, and at least a second balloon located between the distal end and the proximal end of the transporter catheter. The first balloon is an orienting balloon and the second balloon is an anchor balloon. The transporter catheter may include a single lumen or more than one lumen. The transporter catheter may include a shaft including an inner layer and an outer layer, the inner layer may be made of a material more flexible than the material of the outer layer. The outer layer may also include a braided-wire assembly, said braided-wire assembly being formed by braiding a plurality of flat wires or circular wires. The braided-wire assembly may wrap around the inner layer.
    Type: Grant
    Filed: July 27, 2020
    Date of Patent: November 3, 2020
    Assignee: Vasoinnovations Inc
    Inventors: Rajendra Gurudas Sardesai, Samir Bipin Pancholy, Tejas Madhusudan Patel
  • Patent number: 10792469
    Abstract: Devices, systems, and methods are disclosed that help deliver catheters or other medical devices to locations within a patient's body. The device comprises a transporter catheter having a proximal end and a distal end, at least a first balloon located at the distal end, substantially at a tip of the transporter catheter, and at least a second balloon located between the distal end and the proximal end of the transporter catheter. The first balloon is an orienting balloon and the second balloon is an anchor balloon. The transporter catheter may include a single lumen or more than one lumen. The transporter catheter may include a shaft comprising an inner layer and an outer layer, the inner layer may be made of a material more flexible than the material of the outer layer. The outer layer may also comprise a braided wire assembly, said braided wire assembly being formed by braiding a plurality of flat wires or circular wires. The braided wire assembly may wrap around the inner layer.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: October 6, 2020
    Assignee: VASOINNOVATIONS INC.
    Inventors: Rajendra Gurudas Sardesai, Samir Bipin Pancholy
  • Patent number: 10695541
    Abstract: A method may include accessing an artery in communication with an ophthalmic artery of a subject, and advancing a microcatheter along the accessed artery so as to align a distal end of the microcatheter with an ostium of the ophthalmic artery, wherein the microcatheter includes a lumen having a guidewire positioned therein. In addition, the method includes proximally withdrawing the guidewire relative to the microcatheter so as to enable a distal portion of the microcatheter to assume a curved relaxed configuration, and cannulating the ostium with the distal portion of the microcatheter when the distal portion is in the curved relaxed configuration.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: June 30, 2020
    Assignee: J.D. Franco & Co., LLC
    Inventors: Michael Calhoun, Stephen Michael, Zachary Tegels
  • Patent number: 10632285
    Abstract: An apparatus includes a sheath configured to be at least partially inserted into a body of a patient, the sheath having a distal end and a proximal end; a housing coupled to the proximal end of the sheath; and a control mechanism operably coupled to the housing and slidable to move the sheath relative to the housing. The control mechanism includes a locking mechanism for locking the control mechanism in place relative to the housing; a deflection mechanism for articulating a distal end of the sheath; and a saddle slidable relative to the locking mechanism and the deflection mechanism. A device is coupled to the saddle and is extendable from and retractable within the sheath.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: April 28, 2020
    Assignee: Gyrus ACMI, Inc.
    Inventors: Ming J. Cheng, Allen Palmer, Yoshinari Okita
  • Patent number: 10485948
    Abstract: A method of manufacturing a catheter assembly generally includes providing a catheter shaft having an outer layer and an inner reinforcing layer; removing at least a portion of the outer layer from a length of the distal end of the catheter shaft in order to expose a distal segment thereof; providing an inner jacket segment; axially engaging the inner jacket segment with an interior surface of the distal segment of the catheter shaft; providing an outer jacket segment around at least the exposed exterior region of the distal segment of the catheter shaft; and bonding the distal segment of the catheter shaft to the inner jacket segment and the outer jacket segment.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: November 26, 2019
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Troy T. Tegg, Richard E. Stehr, Alan M. Fuentes, Linda Nemec
  • Patent number: 10071223
    Abstract: Described herein is a hose, wherein the hose has a length having a distal end and a proximal end, and an inner diameter and an outer diameter. The hose is comprised of a first layer; and a second layer, wherein the first layer and the second layer extend along at least a portion of the length and wherein a longitudinal compressive force applied to either the distal end or the proximal end of the hose causes the first layer to lock against the second layer.
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: September 11, 2018
    Assignee: Edwards Lifesciences Corporation
    Inventor: Daniel C. Anderson
  • Patent number: 10071222
    Abstract: Catheters, sheaths, or other tubular devices are provided that include a proximal end, a distal end sized for introduction into a patient's body, and a steerable distal portion carrying a plurality of electrodes. The tubular device includes a primary lumen extending between the proximal and distal ends; a steering element lumen adjacent the primary lumen; a plurality of wires extending proximally from the electrodes, and reinforcement members including windings extending helically along at least the distal portion, at least some of the windings passing between the primary and steering element lumens and wires, and at least some of the windings surrounding the primary lumen and one or both of the steering element lumen and the wires. In one embodiment, a steering element is slidably disposed within the auxiliary lumen. Apparatus and methods for making such tubular devices are also provided.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: September 11, 2018
    Assignee: CLPH, LLC
    Inventors: Stephen Arie Leeflang, Christian Scott Eversull
  • Patent number: 10046138
    Abstract: Ureteral access sheaths can have a nonuniform axial-stiffness. A nonuniform axial-stiffness ureteral access sheath can have an inner liner defining a longitudinally extending and generally uniform bore. A non-uniform axial-stiffness outer jacket can define a longitudinally tapered outer surface, and a reinforcement layer can be encapsulated between the inner liner and the non-uniform axial-stiffness outer jacket. The reinforcement layer can have a non-uniform axial-stiffness. For example, a proximal portion of the reinforcement layer can be thicker than a distal portion of the reinforcement layer. A coil of wire can be included in the reinforcement layer, and a diameter of the wire in a proximal portion of the reinforcement layer can be larger than a diameter of the wire in a distal portion of the reinforcement layer. In some instances, the diameter of the wire tapers from the proximal portion to the distal portion.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: August 14, 2018
    Assignee: Gyrus ACMI, Inc.
    Inventors: Rich Faherty, Anthony Tremaglio
  • Patent number: 9937319
    Abstract: Apparatus, systems, and methods are provided for delivering a lead or other instrument into a patient's body using a tubular device including a proximal end, a distal end sized for introduction into a body lumen, and a lumen extending therebetween, thereby defining a longitudinal axis. The tubular device includes a sidewall surrounding the lumen including a reinforcing layer embedded in one or more layers of base material, and a slittable seam in the sidewall extending from the proximal end partially towards the distal end substantially parallel to the longitudinal axis. In addition, slitter devices are for slitting, splitting, or opening the slittable seam. Methods are also provided for making catheters or other tubular devices including slittable, e.g., re-welded longitudinal seams that may be preferentially slit, split, or otherwise opened.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: April 10, 2018
    Inventors: Stephen A. Leeflang, Christian S. Eversull
  • Patent number: 9839771
    Abstract: Apparatus and methods are provided for accessing body lumens and/or for delivering instruments into body lumens, e.g., vessels within a patient's vasculature. A flexible sheath is provided that is expandable from a contracted condition to an enlarged condition wherein the sheath at least partially defines a lumen therein. The sheath is lubricious and has a relatively thin wall, thereby providing a collapsible/expandable guide for delivering fluids and/or instruments through tortuous anatomy and/or into relatively narrow passages. The sheath is advanced from an entry site to a body lumen in the contracted condition. Once the sheath reaches a target body lumen, the sheath is expanded to the enlarged condition, thereby defining a lumen within the sheath, and fluids and/or instruments are introduced into the body lumen via the sheath lumen. Upon completing the procedure, the sheath is removed from the body lumen.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: December 12, 2017
    Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
    Inventors: Christian Scott Eversull, Nicholas J. Mourlas, Stephen Arie Leeflang, Asha Shrinivas Nayak, David John Miller
  • Patent number: 9833596
    Abstract: A catheter includes an electromechanical polymer (EMP) actuator disposed in a steerable tip at the distal end of the catheter. When activated, the EMP actuator deflects the steerable tip through an angle between 0 and 270 degrees, thus permitting the operator to steer the steerable tip through the vasculature. The steerable tip also has at least a first relatively stiff region and a second relatively flexible region, and the EMP actuator is provided next to the first relatively stiff region so that the steerable tip may toward the flexible region when activated. In one implementation, an external interface allows a user to select by name one of many sets of control signals, with each set of control signals being signals calibrated for configuring the catheter to mimic a known catheter.
    Type: Grant
    Filed: August 30, 2013
    Date of Patent: December 5, 2017
    Assignee: Novasentis, Inc.
    Inventors: Richard Ducharme, Mark Levatich, Christophe Ramstein
  • Patent number: 9615949
    Abstract: A delivery device for deploying an expandable prosthesis and method of use thereof are described. The delivery device includes an outer sheath that is capable of retracting in a proximal direction and resheathing over the prosthesis in a distal direction. The device includes a drive pulley that can engage gears to retract or resheath the outer catheter in relation to the prosthesis. In some embodiments, the delivery device may include a reinforced outer sheath disposed over an inner elongate member, the reinforced outer sheath comprising a proximal section reinforced with a braid, a distal section reinforced with a coil and an overlapping section extending between the proximal section and the distal section. Additionally or alternatively, the delivery device may include a stabilizing element for releasably holding the stent to the inner catheter.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: April 11, 2017
    Assignee: Cook Medical Technologies LLC
    Inventors: Michael Ryan, Donagh O'Sullivan, Fionan Keady
  • Patent number: 9545496
    Abstract: 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.
    Type: Grant
    Filed: December 9, 2013
    Date of Patent: January 17, 2017
    Assignee: ASAHI INTECC CO., LTD.
    Inventors: Tadanori Hiroshige, Makoto Nishigishi, Kenji Kaneda, Tatsuhiko Kajii
  • Patent number: 9427551
    Abstract: Catheters, sheaths, or other tubular devices are provided that include a proximal end, a distal end sized for introduction into a patient's body, and a steerable distal portion. The tubular device includes a primary lumen extending between the proximal and distal ends; an auxiliary lumen adjacent the primary lumen; and one or more reinforcement members including windings extending helically along at least the distal portion, at least some of the windings passing between the primary and steering element lumens and at least some of the windings surrounding both the primary and steering element lumens. In one embodiment, a steering element is slidably disposed within the auxiliary lumen. Apparatus and methods for making such tubular devices are also provided.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: August 30, 2016
    Assignee: CLPH, LLC
    Inventors: Stephen A. Leeflang, Christian S. Eversull
  • Patent number: 9227036
    Abstract: A catheter sheath for an irrigation catheter comprises an elongate member having a proximal end and a distal end and defining a lumen extending from the proximal end to the distal end. At least one electrode is arranged on the elongate member. A plurality of elongate elements are contained in the elongate member, the elongate elements comprising at least one electrical conductor and at least one element of a non-conductive material arranged adjacent the at least one electrical conductor to form at least one non-conductive region associated with the elongate member. At least one passage extends through a wall of the elongate member to intersect the non-conductive region and to be in communication with the lumen of the elongate member. The at least one passage has an outlet opening in, or adjacent, the at least one electrode.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: January 5, 2016
    Assignee: CathRX LTD
    Inventors: Neil Lawrence Anderson, Evan Ka-Loke Chong, James Panos, Zoran Milijasevic
  • Patent number: 9149600
    Abstract: The present disclosure provides various embodiments of methods of forming a tapering distal tip for a catheter. An exemplary method includes providing a mandrel and a holding hypotube, placing a tip first material with a first outer diameter over the mandrel and the hypotube, placing a tip second material with a second outer diameter over the mandrel and under the first material, placing a shrink tube of heat-shrink material around at least a junction of the first material and second material, heating the shrink tube, cooling the first material and second material, and removing the shrink tube and the hypotube. The first outer diameter is greater than the second outer diameter.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: October 6, 2015
    Assignee: Volcano Corporation
    Inventors: Jeremy Stigall, Chris LeBlanc
  • Patent number: 9114229
    Abstract: A dual braided catheter shaft includes an inner helical braid and outer helical braid than encapsulate an axially extending steering wire there between. In one embodiment, the shaft includes an inner polymer jacket, an inner braid formed on the inner jacket, a steering wire disposed along an outside surface of the inner braid, an outer braid formed over the inner braid and steering wire assembly and an outer jacket formed on the outer braid. The braiding parameters of the inner and outer braids can be varied along the length of the catheter to provide varying mechanical properties.
    Type: Grant
    Filed: May 21, 2012
    Date of Patent: August 25, 2015
    Assignee: ST. JUDE MEDICAL, AF DIVISION, INC.
    Inventor: Allan M. Fuentes
  • Patent number: 9114236
    Abstract: A non-compliant medical balloon comprises a base balloon including a pair of spaced-apart, generally conical end sections and a generally cylindrical center section connected therebetween. A braided fabric sleeve surrounds at least a portion of the base balloon, wherein the sleeve is formed of at least three substantially inelastic fibers intertwined in such a way that no two of the three fibers are twisted exclusively around one another. The sleeve is permanently affixed to the outer surface of the base balloon so as to prevent excessive expansion of the base balloon when the base balloon is internally pressurized.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: August 25, 2015
    Assignee: BARD PERIPHERAL VASCULAR, INC.
    Inventors: William F. Davies, Jr., Lanny R. Pepper, Kelli L. Hayes
  • Patent number: 9108017
    Abstract: A method for manufacturing a kink-resistant tube having drainage holes is provided. A wire is coated with plastic material and wound around a mandrel forming a plurality of windings. The wound coated wire is heated until the plastic coating material melts and bonds the wire windings to form a wire-reinforced sheath having wire-containing sections and non-wire containing sections. Alternatively, a coated or non-coated wire is wound around a mandrel together with separate polymer filament material and then heated. A filament having an elongated cross-section may be employed with the major axis of the elongated cross-section substantially parallel to the longitudinal axis of the sheath. At least one non-wire containing section is identified by passing light through at least one wall of the wire-reinforced sheath. Image capture and analysis via an optical system and microprocessor automatically identify regions to target a drill for forming holes in the non-wire containing sections.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: August 18, 2015
    Assignee: Applied Medical Resources Corporation
    Inventors: Edward D. Pingleton, Ghassan Sakakine, Boun Pravong, Michael Palermo, Nathalie Raad
  • Patent number: 8986284
    Abstract: 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.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: March 24, 2015
    Assignee: Asahi Intecc Co., Ltd.
    Inventors: Shuichi Kuwada, Fumiyoshi Oshima, Kazutaka Yamada
  • Patent number: 8926560
    Abstract: Distal access balloon guide catheter system and methods for delivering implantable devices, catheters, or substances in or near and/or restoring flow through body lumens, such as blood vessel lumens, or inflating balloons affixed to the distal end of the guide catheter system are described. A Distal access balloon guide catheter having a proximal region, an optional medial region of intermediate flexibility, and distal region possessing high flexibility, high resistance to kinking and a large lumen to wall thickness ratio. The balloon is inflated by means of a kink-resistant secondary lumen embedded within the walls of the balloon guide catheter system tubing.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: January 6, 2015
    Assignee: Covidien LP
    Inventors: James Dinh, Maricruz Castenada, Lynn Miyeko Shimada, Seferino Enrique Torres, Brian Michael Strauss, Jeffrey J. Valko
  • Patent number: 8920369
    Abstract: Steerable medical delivery devices and their methods of use.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: December 30, 2014
    Assignee: Shifamed Holdings, LLC
    Inventors: Amr Salahieh, Jonah Lepak, Emma Leung, Tom Saul, Jean-Pierre Dueri, Brice Arnault De La Menardiere, Clayton Baldwin
  • Patent number: 8920870
    Abstract: A catheter comprising an outer shaft comprising a first section of electroactive polymer. The first section of electroactive polymer affecting either the flexibility of the catheter or the steerability of the catheter.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: December 30, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Jan Weber
  • Patent number: 8911400
    Abstract: Embodiments of the invention include a catheter, comprising: a lumen having a distal end and a proximal end; one or more marker bands circumferentially arranged around the lumen; a support structure extending from the proximal end of the lumen to the most distal marker band; and a top jacket positioned annularly with respect to the lumen, comprising five durometers of material, wherein the support structure and top jacket alternate along the length of the catheter.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: December 16, 2014
    Inventor: Steven J. Ferry
  • Publication number: 20140330253
    Abstract: The application relates to a tube for being introduced into an object. The tube (1), which is preferentially a catheter, comprises a tube-like braid (2) made from electrically conductive strands (3), wherein ends (4) of the strands (3) are staggered in the longitudinal direction of the tube (1). Since the ends of the strands are staggered in the longitudinal direction of the tube, local radio frequency heat generated during a magnetic resonance imaging procedure is not concentrated at a single longitudinal location, but distributed along a staggered region in the longitudinal direction of the tube, in which the ends of the electrically conductive strands are staggered. This distribution of the radio frequency heat along the longitudinal direction of the tube reduces the maximum temperature produced by radio frequency heating and, thus, the likelihood of damaging the object, in which the tube is to be introduced, due to heat.
    Type: Application
    Filed: November 29, 2012
    Publication date: November 6, 2014
    Inventor: Steffen Weiss
  • Publication number: 20140323964
    Abstract: Catheters, sheaths, or other tubular devices are provided that include a proximal end, a distal end sized for introduction into a patient's body, and a steerable distal portion. The tubular device includes a primary lumen extending between the proximal and distal ends; an auxiliary lumen adjacent the primary lumen; and one or more reinforcement members including windings extending helically along at least the distal portion, at least some of the windings passing between the primary and steering element lumens and at least some of the windings surrounding both the primary and steering element lumens. In one embodiment, a steering element is slidably disposed within the auxiliary lumen. Apparatus and methods for making such tubular devices are also provided.
    Type: Application
    Filed: March 17, 2014
    Publication date: October 30, 2014
    Inventors: Stephen A. Leeflang, Christian S. Eversull
  • Patent number: 8864744
    Abstract: A catheter includes a braid assembly having a dual-laminate coating. The braid assembly includes a plurality of braid members interwoven to provide for interstices between the braid members, each braid member having an electrically conductive element, a flexible non-electrically-conductive polymer coating that insulates the electrically conductive element and a thermoplastic bonding adhesive coating. The braid assembly is formed between an inner polymer layer and an outer polymer layer. One or more of the braid members may be coupled to an energy delivery element.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: October 21, 2014
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Robert F. Howat, Alan Fuentes
  • Patent number: 8858530
    Abstract: 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.
    Type: Grant
    Filed: May 28, 2013
    Date of Patent: October 14, 2014
    Assignee: Asahi Intecc Co., Ltd.
    Inventors: Makoto Nishigishi, Fumiyoshi Ashima, Shuichi Kuwada
  • Publication number: 20140303599
    Abstract: A catheter assembly includes an inner liner made of flexible material and an outer layer having a steering mechanism. The steering mechanism includes at least one flat wire and a corresponding lumen through which the flat wire may travel. The steering mechanism may also include at least one pull ring to which the flat wires are attached. A layer of heat shrink material may encompass the outer layer. A braided wire assembly may also be provided in the outer layer, and may be formed by braiding a plurality of flat wires into a wire mesh. The overall cross-section of the catheter assembly is preferably substantially circular. A catheter shaft may include a plurality of segments of differing hardness characteristics. The outer layer typically comprises a melt processing polymer such that the catheter assembly may be laminated using heat.
    Type: Application
    Filed: May 21, 2014
    Publication date: October 9, 2014
    Applicant: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Wayne Heideman, Allan M. Fuentes, Richard E. Stehr, Sarah Cumming, Mark Dustrude
  • Publication number: 20140276644
    Abstract: A catheter with an elastic reinforcement layer allows its catheter tube to expand from a native diameter to an expanded diameter. In this respect, a device or implant with a larger diameter than that of the catheter tube's native diameter size can be passed through the catheter without damage.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: HLT, Inc.
    Inventor: Dale K. Nelson
  • Publication number: 20140236124
    Abstract: 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.
    Type: Application
    Filed: January 17, 2014
    Publication date: August 21, 2014
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Naohiko MIYATA, Fumiyoshi OSHIMA
  • Patent number: 8795255
    Abstract: A catheter comprising an elongate tubular member having a proximal end, a distal end, and a passageway defining a lumen extending between the proximal and distal ends. The elongate tubular member comprises a relatively stiff proximal section and a relatively flexible distal section. The proximal section includes an inner tubular liner, a first stiffener comprising a metal alloy, and a second stiffener comprising a non-metal alloy. The first and second stiffeners are coaxially wound exterior to the proximal inner liner. The distal section includes a distal inner tubular liner and the second stiffener coaxially wound exterior to the distal inner liner. The first stiffener terminates before reaching the distal section.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: August 5, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Lex P. Jansen, Thomas Yung-Hui Chien, Perry Alvin Fukui, Jeffrey A. Sarge, Lawrence Charles Alpert
  • Publication number: 20140214006
    Abstract: 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.
    Type: Application
    Filed: December 9, 2013
    Publication date: July 31, 2014
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Tadanori HIROSHIGE, Makoto NISHIGISHI, Kenji KANEDA, Tatsuhiko KAJII
  • Patent number: 8758326
    Abstract: An elongate medical device includes a tubular member extending between a proximal end and a distal end that has a wall defining a lumen extending therethrough. The elongate medical device also includes a loop portion comprising a plurality of wires having proximal portions embedded into the wall and distal portions which are connected together to form a loop that is distal the distal end of the tubular member.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: June 24, 2014
    Assignee: Cook Medical Technologies LLC
    Inventor: Eric Richard Hennessy
  • Patent number: 8753312
    Abstract: A catheter assembly employs an outer catheter with a pre-formed distal end and an open lumen. An inner catheter having an open lumen and a pre-formed distal end is movably disposed within the outer catheter. Relative rotation and extension of the inner and outer catheters provides the distal end of the catheter assembly with an adjustable range of two- and three-dimensional shapes. The inner catheter can include sections of varying stiffness, such that extension of the inner catheter within the outer catheter modifies the shape of the outer catheter's pre-formed distal end. One or both of the outer and inner catheters includes an occlusion balloon attached to the distal end thereof. The adjustable shaping of the catheter assembly's distal tip provides an improved system for locating and cannulating cardiac venous structures, particularly the coronary sinus via the right atrium.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: June 17, 2014
    Assignee: Cardiac Pacemakers, Inc.
    Inventors: Wade A. Bowe, Eric T. Johnson
  • Patent number: 8753328
    Abstract: A catheter, such as an intravascular catheter, includes a longitudinally pre-oriented tubular substrate and reinforcing means surrounding and in contact with the substrate, the reinforcing means wound over the substrate, and a tubular superstrate surrounding the reinforcing means forcing the reinforcing means against the substrate and maintaining the reinforcing means wound over the substrate. The reinforcing means is a micro-tape having a width less than 0.5 mm and includes a filament layer having a cross sectional aspect ratio (width/height) of 2 to 20, wherein the filaments are fixated by a cured or solidified resin or wax, which constitutes 2 to 40 wt % of the micro-tape.
    Type: Grant
    Filed: December 4, 2008
    Date of Patent: June 17, 2014
    Assignee: Teijin Aramid B.V.
    Inventors: Jason Laurence Aherne, Peter Gerard Akker
  • Publication number: 20140148673
    Abstract: A catheter comprises a flexible polymer catheter body including a proximal shaft section and a distal working section, a wire support structure embedded within the distal working section of the catheter body, a proximal adapter mounted to the proximal shaft section of the catheter body, and a wire disposed within the catheter body. The wire has a proximal end and a distal end. The proximal end of the wire being operably connected to the proximal adapter, and the distal end of the wire is anchored to the wire support structure.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Applicant: HANSEN MEDICAL, INC.
    Inventor: Joseph Bogusky
  • Patent number: 8734699
    Abstract: A catheter assembly includes an inner liner made of flexible material and an outer layer having a steering mechanism. The steering mechanism includes at least one flat wire and a corresponding lumen through which the flat wire may travel. The steering mechanism may also include at least one pull ring to which the flat wires are attached. A layer of heat shrink material may encompass the outer layer. A braided wire assembly may also be provided in the outer layer, and may be formed by braiding a plurality of flat wires into a wire mesh. The overall cross-section of the catheter assembly is preferably substantially circular. A catheter shaft may include a plurality of segments of differing hardness characteristics. The outer layer typically comprises a melt processing polymer such that the catheter assembly may be laminated using heat.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: May 27, 2014
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Wayne Heideman, Allan M. Fuentes, Richard E. Stehr, Sarah Cumming, Mark Dustrude
  • Patent number: 8728055
    Abstract: The present invention is a splitable/peelable reinforced flexible tubular body (10) for a catheter or sheath (12). The body (10) comprises a proximal end (14), a distal end (16), a wall structure (18), and a lumen (20) defined by the wall structure (18). The wall structure (18) extends between the ends and includes a reinforcement layer (22) within the wall structure (18) and a separation line (26) extending longitudinally along the wall structure (18). The separation line (26) is adapted to facilitate the splitting/peeling of the wall structure (18) to allow a medical device such as a pacemaker lead to be removed from within the tubular body (10).
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: May 20, 2014
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Richard E. Stehr, Xiaoping Guo
  • Patent number: 8702680
    Abstract: The intravascular catheter has two segments; a proximal segment with high stiffness and a distal segment with lower stiffness. The catheter can also have an intermediate segment of lower stiffness than the proximal segment and higher stiffness than the distal segment. The catheter comprises a polymeric inner tube, a reinforcing inner jacket which is spirally wound over the inner tube and which becomes progressively softer from a proximal end to a distal end, and a polymeric outer sheath extruded over the inner jacket according to the teachings of U.S. Pat. No. 5,445,624. The reinforcing jacket comprises helical coiled wires or fibers of various materials and layers wound over the inner tube in order to provide improved multi-axial mechanical properties, such as torque, compression, tension and anti-kinking characteristics.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: April 22, 2014
    Assignee: Depuy Synthes Products, LLC
    Inventors: Oscar Jimenez, Roberto Echarri, Kenneth Verduin
  • Publication number: 20140107575
    Abstract: This is a balloon catheter having at least two lumens. One of the lumens is a large working lumen. The balloon catheter is especially useful as a guide catheter or micro catheter and may be used in a variety of therapeutic and diagnostic procedures. In particular, it has value in treating neurovascular embolic strokes in combination with other devices which are delivered to the stroke site through that working lumen. The remainder of the lumens typically are used to inflate and to deflate the balloon.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 17, 2014
    Applicant: CONCENTRIC MEDICAL, INC.
    Inventors: John Miller, Martin Dieck, Maria Aboytes, Ryan K. Pierce
  • Patent number: 8663196
    Abstract: An endovascular sheath apparatus 2 is provided. The endovascular sheath apparatus 2 includes an inner tube 12 that includes a lumen 26 for introducing medical fluids or devices and an outer surface. The apparatus 2 further includes an outer tube 22 with an interior surface. The outer and inner surfaces define a cavity 28 therebetween. The apparatus 2 still further includes a stiffening component 20 which in one embodiment includes a braided material that is at least partially received in at least part of the cavity 28. An actuating mechanism 18 cooperates with the stiffening component 20. A method of providing intravascular delivery of a sheath includes the steps of providing an inner tube 12; positioning a stiffening component 20 around the inner tube 12; and deploying an actuating mechanism 18 that cooperates with the stiffening component 20, a stiffness characteristic of which being adjustable extra-corporeally by movement of the actuating mechanism in combination with the stiffening component.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: March 4, 2014
    Assignee: Kassab Kughn Endovascular Devices LLC
    Inventors: Elias Habib Kassab, Mark Edwin Zyzelewski
  • Publication number: 20140046301
    Abstract: 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.
    Type: Application
    Filed: May 28, 2013
    Publication date: February 13, 2014
    Applicant: ASAHI INTECC CO., LTD.
    Inventors: Shuichi KUWADA, Fumiyoshi OSHIMA, Kazutaka YAMADA
  • Patent number: 8647323
    Abstract: A catheter shaft includes an inner layer of a first polymeric material, an intermediate layer of a second polymeric material, an outer layer of a third polymeric material, a first wire reinforcing layer encapsulated between the inner and intermediate layers, and a second wire reinforcing layer encapsulated between the outer and intermediate layers. Typically, the first wire reinforcing layer includes one or more metallic wires helically wound in one direction and the second wire reinforcing layer includes one or more metallic wires helically wound in the opposite direction. The intermediate layer is bonded to the inner and outer layers, as by extruding layers over one another or by thermal lamination or reflow bonding. Typically, the intermediate layer has a larger yield strain and/or a lower flexural modulus and/or a lower durometer than at least one of the inner layer and the outer layer.
    Type: Grant
    Filed: December 30, 2007
    Date of Patent: February 11, 2014
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Xiaoping Guo, David Johnson, Richard E. Stehr
  • Publication number: 20140031796
    Abstract: 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.
    Type: Application
    Filed: May 28, 2013
    Publication date: January 30, 2014
    Applicant: ASAHI INTECC CO. LTD.
    Inventors: Makoto NISHIGISHI, Fumiyoshi OSHIMA, Shuichi KUWADA
  • Patent number: 8622994
    Abstract: A flexible composite tube for medical applications is described. The tube has the ability to transmit a torque and to resist compression, tension, and kinking. The tube is also very flexible in bending, and has a small wall thickness. Different layers are used to obtain the desired properties. Torsional stiffness is obtained by embedding a braid in an elastomeric material. Resistance to kinks and to compression and tension is obtained by placing coils radially inward or outward of the braid. Smooth plastic layers are used to seal the assembly, and facilitate sliding in a body cavity.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: January 7, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Jeffrey Michael Wendlandt, Yem Chin
  • Patent number: 8562517
    Abstract: The invention relates to a medico-technical device for at least partially introducing into a body passage. Said device comprises an elongate, tubular, flexible internal body (2), an elongate exterior enveloping body (3) which surrounds, at least partially, said internal body (2) on the periphery thereof, and a device (4) for transferring the device (1) from a flexible state to a rigid state and vice-versa. The invention is characterized in that the internal body (2), which is in the form of a double tube (5), comprises an inner tube (6) which forms an inner wall (8) of the internal body (2) and an external tube (7) which forms an external wall (9) of the internal body (2), said external tube (7) surrounding the inner tube (6) in a concentric manner on the periphery thereof.
    Type: Grant
    Filed: August 8, 2006
    Date of Patent: October 22, 2013
    Inventor: Alexander Von Weymarn-Schärli
  • Publication number: 20130197481
    Abstract: A method of manufacturing a catheter shaft includes the steps of forming an inner layer of a first polymeric material, forming a plait matrix layer including a second polymeric material about the inner layer, and forming an outer layer of a third polymeric material about the plait matrix layer. The plait matrix layer includes a braided wire mesh partially or fully embedded within the second polymeric material, which is different from at least one of the first polymeric material forming the inner layer and the third polymeric material forming the outer layer. The second polymeric material has a higher yield strain and/or a lower hardness than at least the first polymeric material, and preferably both the first and the third polymeric materials. The first polymeric material and the third polymeric material may be different or the same. The catheter shaft may be formed by stepwise extrusion, co-extrusion, and/or reflow processes.
    Type: Application
    Filed: March 12, 2013
    Publication date: August 1, 2013
    Inventors: Xiaoping Guo, Richard E. Stehr
  • Publication number: 20130197482
    Abstract: A catheter set includes a catheter and a fixing device. The fixing device includes a tubular member which is formed in such a way as to increase or decrease in diameter under axial extension or compression. A first projection and a second projection are provided at both ends of the tubular member. A movable tubular body is disposed around the tubular member between the first projection and the second projection. A distal part is coupled to the tubular member by a support member. The distal part is disposed distally of the tubular member and is configured to at least contact a proximal portion of a tubular device for medical use through which the catheter runs.
    Type: Application
    Filed: March 14, 2013
    Publication date: August 1, 2013
    Applicant: TERUMO KABUSHIKI KAISHA
    Inventor: TERUMO KABUSHIKI KAISHA