Lumen Enforced By Embedded Or Coiling Strands Patents (Class 604/526)
  • Patent number: 10639022
    Abstract: Retraction guidewires are disclosed, including retraction guidewires configured to transition from an elongate configuration for delivery to a treatment site through an organ wall to a deployed configuration for retraction of the organ wall, for example. The deployed configuration includes a stem portion and a dome portion having a distal end and a proximal end, the stem portion extending proximally from the distal end of the dome portion.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: May 5, 2020
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: David C. Keach, Nathan K. Mooney
  • Patent number: 10500371
    Abstract: A wall (39) of a catheter (38) (a) includes a braided portion (41) having an outer surface (45), an inner surface (47), and a braided interior (53) between the outer and inner surfaces (45, 47), and (b) is shaped to define first and second longitudinally-running channels (27a, 27b) therethrough. A distal portion of the catheter (38) is shaped to define first and second lateral openings (26a, 26b). An angle between (a) a first line (76) running between the first and second lateral openings (26a, 26b), and (b) a second line (78) that is parallel to a central longitudinal axis of the catheter (38) when the catheter (38) is straight, is between 30 and 150 degrees.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: December 10, 2019
    Assignee: TRANSSEPTAL SOLUTIONS LTD.
    Inventors: Elad Sapir, Eyal Teichman, Francesco Maisano
  • Patent number: 10188421
    Abstract: Methods of providing sympathetic nerve blocks comprise inserting a portion of a catheter into a subject. A distal end of the catheter is positioned on a lateral side of at least one vertebra of a vertebral column of the subject proximate to a portion of a sympathetic nervous system of the subject. A medication is supplied through the catheter to effect a sympathetic nerve block in the subject. Methods of alleviating pain in lower extremities of subjects comprise inserting a portion of a catheter into a subject and supplying a medication through the catheter. Catheters and catheter assemblies may be used in administering such sympathetic nerve blocks. Catheters and catheter assemblies may be used in administering medication to one or more of a peripheral nervous system of a subject and a spinal cord of a subject.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: January 29, 2019
    Assignee: Custom Medical Applications, Inc.
    Inventors: Douglas J. Spiel, N. Sandor Racz
  • Patent number: 10179224
    Abstract: An enhanced flexibility neurovascular catheter is provided, such as for distal neurovascular access or aspiration. The catheter includes an elongate flexible body, having a proximal end, a distal end and a side wall defining a central lumen. A distal zone of the side wall includes an outer jacket surrounding a helical coil, and the outer jacket is formed from a plurality of tubular segments positioned coaxially about the coil. A proximal one of the tubular segments has a durometer of at least about 60D, and a distal one of the tubular segments has a durometer of no more than about 35D. An axially extending filament within the side wall extends at least about the most distal 10 cm of the length of the catheter. The axially extending filament serves as a tension support and resists elongation of the catheter wall under tension, such as when the catheter is being proximally retracted through tortuous vasculature.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: January 15, 2019
    Assignee: Incept, LLC
    Inventors: Yi Yang, Fred Khosravi, Lisa M. Young
  • Patent number: 9962066
    Abstract: In one embodiment of the invention, an apparatus for performing surgical procedures is disclosed including a flexible entry guide tube, and a first steering device. The flexible entry guide tube has one or more lumens extending along its length from a proximal end to substantially at or near a distal end. At least one of the one or more lumens is an instrument lumen with open ends to receive a flexible shaft of a surgical tool to perform surgery near the distal end of the flexible entry guide tube. The first steering device is insertable into the instrument lumen to shape the flexible entry guide tube as it is inserted through an opening in a body and along a path towards a surgical site. The apparatus may further include a flexible locking device to couple to the flexible entry guide tube and selectively rigidize the flexible entry guide tube to hold its shape. The flexible entry guide tube may be steered by remote control with one or more actuators.
    Type: Grant
    Filed: June 30, 2008
    Date of Patent: May 8, 2018
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Theodore W. Rogers, David Q. Larkin
  • Patent number: 9913933
    Abstract: In various embodiments of the present disclosure, a surgical catheter is provided. The present disclosure provides a catheter shaft that includes a distal portion and a proximal portion. The proximal portion comprises a handle operably connected to the distal portion of the elongated structure. The distal portion three radially positioned polymeric layers. At least two of the layers include chemically dissimilar polymers and at least one of the three layers includes functionalized polyvinylidene fluoride (PVDF).
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 13, 2018
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventors: Xiaoping Guo, David P. Johnson
  • Patent number: 9913959
    Abstract: Medical devices, perfusion systems, and methods for detecting a pressure within a space in a subject and for perfusion of fluid into a space in a subject. The space may be a fluid-filled space, or a space that is depleted of fluid due to an obstruction to fluid flow into the space. Methods for forming the medical devices.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: March 13, 2018
    Assignee: Endophys Holdings, LLC
    Inventors: Phillip D. Purdy, Steven J. Ferry
  • Patent number: 9913966
    Abstract: A balloon catheter comprises a balloon, an outer tube connected to a proximal end of the balloon, an inner tube disposed inside the outer tube and having a distal end attached to a distal end of the balloon, a protruded-depressed portion formed on an outer periphery of the inner tube, and a core wire disposed between the outer tube and the inner tube. The core wire has a bulged portion sandwiched between the outer tube and a depressed portion of the protruded-depressed portion. The balloon catheter can transmit a force from the core wire to both the outer tube and the inner tube regardless of whether the force is generated by pushing or pulling a proximal end portion of the balloon catheter. Additionally, the core wire can move appropriately to maintain the flexibility of the balloon catheter even when the balloon catheter bends.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: March 13, 2018
    Assignee: ASAHI INTECC CO., LTD.
    Inventors: Takeharu Katsurada, Takeshi Mogi
  • Patent number: 9801746
    Abstract: A stent indwelling device includes a guide catheter and a pusher catheter. The guide catheter includes: a core section; an outer layer section surrounding an outer circumference of the core section; a stent protection section disposed between the core section and the outer layer section, being longer than a dimension of a tube stent, having stiffness resisting compression inward in a radial direction perpendicular to a longitudinal axis of the guide catheter, and having flexibility in a direction in which the guide catheter is curved; and a stopper configured to allow expansion of the stent protection section in a direction along the longitudinal axis and restrict movement of the stent protection section in the direction with respect to the core section.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: October 31, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Chieko Ogawa, Yutaka Yanuma
  • Patent number: 9750625
    Abstract: A catheter delivery device for a self-expanding stent is described. The delivery device includes a distal catheter component and a distal sheath that releases the stent by moving proximally relative to the distal catheter component and the stent. A proximal catheter shaft including a tube and a pull wire within a lumen of the tube may be provided, the pull wire being attached to the distal sheath such that pulling the pull wire proximally relative to the tube pulls the distal sheath proximally to release the stent progressively. A casing tube may be provided to surround the catheter shaft, the casing tube having a distal end that receives telescopically a proximal end of the distal sheath.
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: September 5, 2017
    Assignee: C.R. Bard, Inc.
    Inventor: Juergen Dorn
  • Patent number: 9622892
    Abstract: A sheath for deploying a medical device to a target site in the body of a patient. A tubular inner liner has a proximal portion, a distal portion, and an outer surface. An outer jacket has a proximal portion, a distal portion, and an inner surface. A reinforcing member is received within a length of the outer jacket. The outer jacket is positioned longitudinally around the inner liner and bonded to the outer surface of the liner. The reinforcing member, which may be a triaxial braid, or an encapsulated longitudinal reinforcing wire, extends along the outer jacket length and is configured for inhibiting elongation of the sheath upon deployment of the device.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: April 18, 2017
    Assignee: COOK MEDICAL TECHNOLOGIES LLC
    Inventors: Brett O. Baker, Carrie L. Fercik Grant, James C. Merk, Scott E. Boatman, David A. Drewes, Jr., Michael D. Deckard
  • Patent number: 9370639
    Abstract: A variable stiffness catheter having two concentric coils. A first coil is fixed with relation to the body of the catheter and a second coil is able to rotate in the space between adjacent turns of the first coil. The second coil translates axially in response to being rotated. When the second coil is advanced to its distal position, the stiffness is maximized. When the second coil is refracted proximally, the stiffness of the coil is reduced.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: June 21, 2016
    Assignee: Cook Medical Technologies, LLC
    Inventors: Trevor Plassman, Logan Michael Cage
  • Patent number: 9358599
    Abstract: An apparatus produces a tubular structure having a longitudinal axis and at least one form extending helically inward from the structure relative to the longitudinal axis. The apparatus includes an extruder including at least two spaced apart extrusion die surfaces adapted to extrude plastic state material therethrough. At least one extrusion die has at least one nonplanar channel having facing nonplanar surfaces configured and disposed such that during extrusion of the material through the at least one extrusion die, material flowing into the channel creates the at least one form. The channel surfaces direct material flow such that the at least one form and the structure exiting the extruder and last contacted by the at least one die of the extruder collectively helically rotate about the longitudinal axis.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: June 7, 2016
    Assignee: GYRE Innovations LP
    Inventors: Stephen Mettee, II, Clay Tully, Stephen W. Tansey
  • Patent number: 9339627
    Abstract: A non-compliant medical balloon, where the non-compliant medical balloon may be changed from a deflated state to an inflated state by increasing pressure within the balloon, is made with a first fiber layer, a second fiber layer over said first fiber layer such that the fibers of the first fiber layer and the fibers of the second fiber layer form an angle and a binding layer coating the first fiber layer and said second fiber layer. The interior surface area of the non-compliant medical balloon remains unchanged when the balloon changes from a deflated state to an inflated state.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: May 17, 2016
    Assignee: BARD PERIPHERAL VASCULAR, INC.
    Inventor: James P. Beckham
  • Patent number: 9321850
    Abstract: Methods are provided for reducing one or more dimensions of individual pieces of biomass; treating biomass, such as size-reduced biomass; changing a molecular structure of a biomass material; and, optionally, subjecting the biomass to a primary process to form a product. The methods include processing biomass materials using a screw extrusion process, and treating the biomass material with a screw extrusion process in size-reduction and treating steps.
    Type: Grant
    Filed: December 22, 2014
    Date of Patent: April 26, 2016
    Assignee: XYLECO, INC.
    Inventor: Marshall Medoff
  • Patent number: 9272119
    Abstract: A method for manufacturing a catheter member having at least one lumen is disclosed herein. The method includes, winding a sacrificial coil over a mandrel in a first direction and winding a reinforcement coil over the sacrificial coil in a second direction. A polymer is then laminated over the sacrificial coil and the reinforcement coil. After the polymer is laminated, the mandrel is removed and the sacrificial coil is removed to thereby form the catheter member having the lumen.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: March 1, 2016
    Assignee: Covidien LP
    Inventors: Adam Cohen, Hao Wang
  • Patent number: 9254157
    Abstract: A device and method for treating bone fractures/lesions using an inflatable body is provided. The inflatable body includes a balloon having a substantially flat horizontal surface for quick easy insertion into bone beneath the fracture so as to align misaligned fragments of the fracture and/or to collapsed bone. The body has a shape and size to compress at least a portion of the cancellous bone to form a cavity in the cancellous bone and/or to restore the original position of the outer cortical bone, if fractured or collapsed. The inflatable body has a stylet attached to it's distal end so that once the inflatable body is deflated it can be twisted about the stylet to have a smaller profile so as to be easily withdrawn from the bone.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: February 9, 2016
    Assignee: KYPHON SARL
    Inventors: Masourmeh Mafi, Bryan Auyoung, Todd Jenkins, Warren Sapida
  • Patent number: 9125800
    Abstract: An indicator assembly for use with a non-vascular catheter device. The indicator assembly includes: a first retainer secured to a catheter tube, the first retainer being an indwelling retainer which is deployed within a non-vascular lumen or cavity of the body; a second retainer secured to the catheter tube, the second retainer deployed outside the human body; and an indicator located outside the body on the catheter tube between the first retainer and the second retainer. The first retainer and the second retainer are configured to maintain substantially the same position with respect to each other on the tube and the indicator is configured to signal a change in position with respect to either the first or the second retainer, thereby indicating a change in the length of a stoma.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: September 8, 2015
    Assignee: AVENT, INC.
    Inventors: Andrew T. Baker, Jennifer S. Stadelman, Dwayne J-K Jackson, Sridhar Ranganathan, Phillip A. Schorr, James M. Takeuchi
  • Publication number: 20150119859
    Abstract: The present disclosure provides a strong, flexible catheter shaft for use in a catheter system. The flexible catheter shaft includes a braided polyimide tube including one or more outer layers of material of varying flexibility. The flexible catheter shaft provides a shaft having sufficient stiffness and kink resistance to allow an operator to advance an electrode basket connected to the flexible catheter shaft through a guide catheter to a target ablation site without causing vessel trauma. The distal tip of the flexible catheter shaft is designed to have sufficient flexibility to reduce any risk of kicking out a guide catheter when tracking the electrode basket around turns into side branches or bifurcations in the vasculature of a patient and includes a distal spring coil.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 30, 2015
    Inventors: Tobias Cajamarca, Gregory James Dakin, Jeffrey John Strong
  • Publication number: 20150080858
    Abstract: A method of manufacturing a catheter includes wrapping a sheet of material having an inner adhesive layer around a reinforcement member. The catheter manufactured is a resilient tube having a channel extending therethrough. The resilient tube has an adhesive inner layer and a bendable reinforcement member which extends through the channel.
    Type: Application
    Filed: September 18, 2013
    Publication date: March 19, 2015
    Inventor: Gerald Moss
  • Publication number: 20150051541
    Abstract: Provided is a medical instrument which can reliably protect a sub-lumen and a method of manufacturing the medical instrument. In such a medical instrument, a catheter includes a resin tubular main body (sheath), in which a main lumen and a sub-lumen which is disposed on an outer peripheral side of the main lumen and extends along a longitudinal direction of the main lumen, are formed; a reinforcement layer which is disposed between the main lumen and the sub-lumen and surrounds the main lumen; and a wire which is disposed further on an outer peripheral surface side of the tubular main body than the sub-lumen and is disposed so as to surround the outer periphery of the main lumen. The wire is embedded in the tubular main body and supports the outer peripheral surface of the tubular main body.
    Type: Application
    Filed: March 25, 2013
    Publication date: February 19, 2015
    Applicant: SUMITOMO BAKELITE CO., LTD.
    Inventors: Kenichi Kanemasa, Hayao Tanaka, Yoshihiro Abe
  • Patent number: 8945060
    Abstract: Medical device (10) for delivering therapeutic material to a patient. The device comprises an access sheath (12) having a proximal section (18) extending to a distal section (20). A working lumen (22) is formed in the proximal and distal sections. The distal section has a plurality of side ports (48) formed therethrough in fluid communication with the working lumen. The distal section has a deflection section (42) actuatable to bend at an angle for positioning the side ports in the patient. A needle assembly (14) is configured to move within the working lumen between a retracted position and an extended position. In fluid communication with a central lumen is a plurality of needles (80). The needles are disposed within the access sheath in the retracted position and the needles extend through the side ports outwardly from the access sheath in the extended position.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: February 3, 2015
    Assignee: Cook Medical Technologies LLC
    Inventor: Tyler Joseph Bunch
  • Patent number: 8939960
    Abstract: Methods for easy, atraumatic access to areas of the vasculature that are otherwise difficult to access, using steerable guide catheters constructed with components that are selected to provide optimal navigability, torque transfer, and push ability for a variety of typical percutaneous access routes. The catheter wall thickness in the deflecting segment of the guide catheter is about 1 French (? mm) or less, and includes a slotted deflection tube, and this construction allows a very tight turning radius which in turn enables guide catheter access to regions of the vasculature that are otherwise inaccessible.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: January 27, 2015
    Assignee: BioCardia, Inc.
    Inventors: Daniel Rosenman, Daniel Kayser, Michael Keleher, Nick Fravala, Richard Cook, Mark Tale, Frank Arko, Simon Stertzer, Peter A. Altman
  • Patent number: 8939931
    Abstract: Disclosed is an access catheter, having a distal segment which is moveable from a reduced outside diameter for positioning at a target site, and an enlarged outside diameter to create an enlarged internal working lumen. In one application, the catheter is configured for use as an intracranial aspiration catheter. Methods are also disclosed.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: January 27, 2015
    Assignee: Onset Medical Corporation
    Inventor: Gerard von Hoffmann
  • 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: 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: 20140276619
    Abstract: An intravenous catheter has a tip portion, an extendable portion and a proximal portion attached to a hub. The extendable portion has a refracted position and an extended position. A wire may be incorporated in the intravenous portion. The wire may have a receiver disposed in the tip portion. An extender tool is insertable and removable from the catheter. The extender is dimensioned to engage the receiver upon insertion into said catheter and lengthen the extendable portion of said catheter to said extended position when inserted.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: The Board of Trustees of the University of Illinois
    Inventor: Girish G. Deshpande
  • 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: 20140276643
    Abstract: In various embodiments of the present disclosure, a surgical catheter is provided. The present disclosure provides a catheter shaft that includes a distal portion and a proximal portion. The proximal portion comprises a handle operably connected to the distal portion of the elongated structure. The distal portion three radially positioned polymeric layers. At least two of the layers include chemically dissimilar polymers and at least one of the three layers includes functionalized polyvinylidene fluoride (PVDF).
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: St. Jude Medical, Cardiology Division, Inc.
    Inventors: Xiaoping Guo, David P. Johnson
  • Publication number: 20140243796
    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: Application
    Filed: February 26, 2014
    Publication date: August 28, 2014
    Applicant: ST. JUDE MEDICAL, ATRIAL FIBRILLATION DIVISION, INC.
    Inventors: Troy T. Tegg, Richard E. Stehr, Alan M. Fuentes, Linda Nemec
  • Publication number: 20140202462
    Abstract: The disclosure relates to medical tubes and methods of manufacturing medical tubes. The tube may be a composite structure made of two or more distinct components that are spirally wound to form an elongate tube. For example, one of the components may be a spirally wound elongate hollow body, and the other component may be an elongate structural component also spirally wound between turns of the spirally wound hollow body The tube need not be made from distinct components, however. For instance, an elongate hollow body formed (e.g., extruded) from a single material may be spirally wound to form an elongate tube. The elongate hollow body itself may in transverse cross-section have a thin wall portion and a relatively thicker or more rigid reinforcement portion. The tubes can be incorporated into a variety of medical circuits or may be employed for other medical uses.
    Type: Application
    Filed: May 30, 2012
    Publication date: July 24, 2014
    Applicant: FISHER & PAYKEL HEALTHCARE LIMITED
    Inventors: Elmo Benson Stoks, Charles Christopher North
  • Publication number: 20140207115
    Abstract: The invention primarily is directed to a medical tubing adapted for insertion into a body tissue or cavity and method of manufacturing different variations of the tubing along a length of the tubing. The tubing comprises a plurality of individual, discrete, generally ring-shaped elements arranged in series and fused or bonded together forming a continuous tubular structure. The ring-shaped elements may include a combination of flexible and rigid ring-shaped elements assembled along different portions or sections of the tubular structure. In another aspect of the invention, the medical tubing may further comprise a secondary lumen and a pull wire to control the tubular structure. In another aspect of the invention, the ring-shaped elements may vary in diameter and/or composition in different portions or sections of the tubular structure.
    Type: Application
    Filed: March 24, 2014
    Publication date: July 24, 2014
    Applicant: Applied Medical Resources Corporation
    Inventors: John R. Brustad, Said S. Hilal, Nabil Hilal, Charles C. Hart, Gary M. Johnson, Serene Wachli, Ghassan Sakakine, Donald L. Gadberry, Edward D. Pingleton, Matthew N. Petrime, Payam Adlparvar, Carl B. Hadley, Kenneth K. Vu
  • Publication number: 20140194856
    Abstract: Introducer sheath (10,30,40) having a flexible kink-resistant distal tip portion (26,32,42). A multilayer sheath structure is used, with an inner tube (12) such as PTFE having a coil (14) of wire wound therearound. A first length of outer tubing (20) such as of nylon is inserted over most of the coil-wound inner tube (12) in a manner exposing a distal length of coil-wound inner tube. A second length of outer tubing (22) with a softer durometer than first outer tubing length (20), is inserted over the exposed coil-wound inner tube and extends for a slight distance beyond the end of the coil. During heat application, the outer tubing lengths (20, 22) are melted to bond to each other and to flow between the spacings of the coil turns to bond to the roughened outer surface of the inner tube (12). The distal tip region corresponding to the second tubing length is flexible and is kink-resistant due to the coil (14).
    Type: Application
    Filed: March 13, 2014
    Publication date: July 10, 2014
    Applicant: Cook Medical Technologies LLC
    Inventor: Fred T. Parker
  • Publication number: 20140194823
    Abstract: Tubing for use in gastrointestinal applications includes a hollow tube and a spring positioned inside the tube. The spring is corrosion resistant and helps to prevent kinking of the tubing when the tubing is bent. An encapsulant may be positioned over the spring. The spring may be co-extruded with the tubing.
    Type: Application
    Filed: December 23, 2013
    Publication date: July 10, 2014
    Applicant: Applied Medical Technology, Inc.
    Inventors: Grant W. Phillips, Derek M. Williams, George J. Picha
  • Patent number: 8740875
    Abstract: The present application relates to method of arresting telescopic endwise relative movement in a medical device between an end portion of an elongate member, preferably being a cylinder, and an end portion of a tube, preferably being a cylindrical tube, that receives the end portion of the elongate member. The method is of particular use in the construction of stent delivery systems. In one embodiment, the method comprises providing a length of deformable blocking material; imparting relative endwise movement to draw the blocking material, into the gap and reversing the direction until the blocking material length suffers deformation.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: June 3, 2014
    Assignee: C. R. Bard, Inc.
    Inventors: Martin Wuebbeling, Daniel Dietrich
  • 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: 8721826
    Abstract: A steerable kink resistant access device is provided having an elongated body and a steerable portion; methods for manufacturing the kink resistant device are also provided. The access sheath has an outside diameter sufficiently small so that it may be inserted into a body cavity or conduit. The access sheath typically has two internal lumen, a first lumen sized and configured as an access to a surgical site and a second lumen sized and configured to contain a tensioning device that, when acted upon, will deflect the steerable portion. The tensioning device may be directly or remotely attached to an actuation device that operates to control the tensioning and loosening of the tensioning device.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: May 13, 2014
    Assignee: Applied Medical Resources Corporation
    Inventors: Charles C. Hart, John R. Brustad, Nabil Hilal, Henry Kahle, Donald L. Gadberry
  • Patent number: 8708997
    Abstract: Introducer sheath (10,30,40) having a flexible kink-resistant distal tip portion (26,32,42). A multilayer sheath structure is used, with an inner tube (12) such as PTFE having a coil (14) of wire wound therearound. A first length of outer tubing (20) such as of nylon is inserted over most of the coil-wound inner tube (12) in a manner exposing a distal length of coil-wound inner tube. A second length of outer tubing (22) with a softer durometer than first outer tubing length (20), is inserted over the exposed coil-wound inner tube and extends for a slight distance beyond the end of the coil. During heat application, the outer tubing lengths (20,22) are melted to bond to each other and to flow between the spacings of the coil turns to bond to the roughened outer surface of the inner tube (12). The distal tip region corresponding to the second tubing length is flexible and is kink-resistant due to the coil (14).
    Type: Grant
    Filed: January 19, 2011
    Date of Patent: April 29, 2014
    Assignee: Cook Medical Technologies LLC
    Inventor: Fred T. Parker
  • 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
  • Publication number: 20140074070
    Abstract: A catheter (40) or sheath (14) is provided with a strengthening element (30) embedded within the walls of the catheter (40). The strengthening element (30) is formed of a plurality of short strengthening members (32) arranged in longitudinally overlapping manner but which are radially spaced from one another and fixed to one another by annular coupling elements (36). The strengthening element (32) is made of a metal or metallic material, whereas the coupling elements (36) are made of a non-conductive material. The coupling elements (36) prevent electrical conduction through the length of the catheter (40) but retain a strengthening structure which provides torque strength and kink resistance. The short sections of conductive strengthening members (32) provide shielding of electromagnetic waves but prevent the strengthening element (30) acting as an aerial.
    Type: Application
    Filed: March 6, 2013
    Publication date: March 13, 2014
    Applicant: Cook Medical Technologies LLC
    Inventor: Arne Molgaard Nielsen
  • 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
  • Patent number: 8663197
    Abstract: A flexible channel to be incorporated into an endoscopic insertion portion having a flexible portion at least in part of its length, for the purpose of providing a flexible passage internally of the endoscopic insertion portion. The flexible channel is composed of a flexible tube with a helical groove on and around its outer periphery, and a reinforcing coil fitted in the helical groove on the flexible tube. At the root of the helical groove, angular projections are formed at intervals in the longitudinal direction and the reinforcing coil is tightly pressed tightly against the angular projections.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: March 4, 2014
    Assignee: FUJIFILM Corporation
    Inventors: Akira Ogura, Joji Watanabe
  • Patent number: 8636716
    Abstract: A medical device including a shaft having an elongated inner member and an elongated tubular reinforcing member disposed over at least a portion of the inner member. In some embodiments, at least a portion of the outer surface of the inner member is spaced from the inner surface of the reinforcing member, defining a space substantially free of any other structures of the device. In some embodiments, the shaft can include a tip structure disposed on a distal portion of the inner member. In some such embodiments, the reinforcing member has a distal end, and the tip structure is disposed on the distal portion of the inner member adjacent the distal end of the reinforcing member. Additionally, in some embodiments, the reinforcing member can include a plurality of apertures defined therein, for example, to enhance the flexibility or other such characteristics of all or portions of the reinforcing member.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: January 28, 2014
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Stephen A. Griffin, Elaine Lim, Gregory E. Mirigian
  • 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: 8608646
    Abstract: An endoscope shaft made of a composite tube comprises an external tube and an internal tube which is softer and more resilient compared to the external tube as well as a helical spring for stiffening the composite tube. According to the invention, the helical spring in the relaxed state has an outer diameter which is larger than the inner diameter of the internal tube. Furthermore the helical spring is inserted in the internal tube preferably loosely at a spring bias, whereby it is radially pressed against the internal tube.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: December 17, 2013
    Assignee: Invendo Medical GmbH
    Inventors: Ilona Sabine Dillinger, Manfred Josef Grosshardt
  • Patent number: 8591495
    Abstract: A thin-walled introducer sheath is described. In some embodiments, the introducer sheath includes structural support components, such as wires, used in connection with a polymeric inner coating, a polymeric outer coating, or both. Further, in some embodiments, the wire components are annealed to reduce cold-work-related stresses and hardness. Use of annealed components may enable a reduction in the thickness of the polymeric outer coating in some applications.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: November 26, 2013
    Assignee: Fischell Innovations, LLC
    Inventors: Robert E. Fischell, Tim A. Fischell, David R. Fischell
  • Patent number: 8568369
    Abstract: An infusion catheter includes an elongate catheter body having a proximal body component and a distal body component. The distal body component includes a distal body outer surface and a distal body inner surface defining an infusion lumen. The distal body component further includes a skeleton, and a porous infusion control textile contacting the skeleton and extending circumferentially about a longitudinal axis of the catheter and defining a fluid emission profile thereof. The porous infusion control textile further includes a fiber network having a higher density space filling configuration at a proximal textile end and a lower density space filling configuration at a distal textile end, and defining a pressure sensitive flow rate property and a pressure insensitive flow distribution property of the fluid emission profile.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: October 29, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: Therese O'Day, Richard Earl Luedemann, Shyam Kuppurathanam
  • 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
  • Patent number: 8551073
    Abstract: A catheter device (K, K1, K2 and K3) has a flexible hollow tube body (1) formed by a plurality of austenitic stainless steel wires (2) cylindrically stranded to provide a hollow structure. An inner surface of the flexible hollow tube body (1) has a convex-concave structure represented by the stainless steel wires (2) to provide helical grooves (30). A leading distal end of the flexible hollow tube body (1) is formed into a knife-edge circle configuration to provide a knife-edge circle front (3), thus imparting a perforative capability to improve its quality and performance.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: October 8, 2013
    Assignees: Osamu Katoh, Asahi Intecc Co., Ltd.
    Inventors: Osamu Katoh, Shinji Ozawa, Tomihisa Kato