Patents by Inventor David Ernest Hartley

David Ernest Hartley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Introducer with extension
    Patent number: 8663306
    Abstract: A stent graft delivery device (1) has an elongated extension piece (20) extending from its proximal end of the introducer portion (3). The elongate extension piece is selectively separable from the introducer portion. A plurality of auxiliary guide wires (50) extend from through the stent graft delivery device and through the elongate extension piece. The auxiliary guide wires can cross over at the proximal end of the extension piece and return. The stent graft delivery device can be introduced into a patient via a femoral artery and the elongated extension piece can extend out an artery of the thoracic arch whereby to extend the auxiliary guide wires out of such an artery to give through and through guide wires. Catheterization of pararenal arteries is then possible via a brachial route.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: March 4, 2014
    Assignee: Cook Medical Technologies LLC
    Inventors: Piotr Miroslaw Kasprzak, David Ernest Hartley, Werner Dieter Ducke, Blayne A. Roeder
  • Paraplegia prevention valve for stent grafts
    Patent number: 8636789
    Abstract: A stent graft defining a main lumen bounded by a wall of graft material is disclosed. The stent graft has a valve portion between proximal and distal portions. The valve portion is formed by a wall portion having a part-circumferential double layer portion comprising an inner underlap portion and an outer overlap portion, the double layer portion forming a passageway parallel to the main lumen. The passageway has an entrance mouth and an exit mouth. The passageway has an open condition where the underlap and overlap portions are spaced apart to form a vent lumen. The wall portion is broken by a narrow cut. The cut is openable by relative radial movement between its edges. This allows re-perfusion of an aneurism and perfusion of blood from within the lumen out towards blood vessels such as intercostals and can assist in minimizing the chance of paraplegia.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: January 28, 2014
    Assignee: Cook Medical Technologies LLC
    Inventors: Krasnodar Ivancev, Piotr Miroslaw Kasprzak, David Ernest Hartley
  • FENESTRATED STENT GRAFTS
    Publication number: 20130345785
    Abstract: A stent graft (1) including a tubular wall (3) with at least one fenestration (40) including a peripheral (37) reinforcement around at least part of the fenestration. There can also be a tubular extension (15). The side arm includes a stent (19) and a cover (17) and extends from and is in fluid communication with the fenestration and the stent graft. The stent may be a self expanding stent. The ring and/or tubular extension provides better support and sealing for an extension arm. The fenestration (40) can be circular or if towards the ends of the stent graft may be in the form of a U-shape (50) with an open end.
    Type: Application
    Filed: July 25, 2013
    Publication date: December 26, 2013
    Inventors: David Ernest Hartley, John Lennon Anderson, Michael Lawrence-Brown
  • Stent grafts for the thoracic aorta
    Patent number: 8603156
    Abstract: A method of temporarily reducing the diameter of a stent graft (10) and a stent graft with its diameter reduced. The stent graft has a tubular body and self expanding stents.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: December 10, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Werner Dieter Ducke
  • Stent grafts for the thoracic aorta
    Patent number: 8597346
    Abstract: A method of temporarily reducing the diameter of a stent graft (10) and a stent graft with its diameter reduced. The stent graft has a tubular body and self expanding stents.
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: December 3, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Werner Dieter Ducke
  • Radiopaque reinforcing member
    Patent number: 8579959
    Abstract: A reinforcement member (10) for a fenestration in a stent graft (30) comprises a composite wire (12) formed from wire strands of at least two types (14, 16, 18). A first type of wire strand comprises a metal alloy with shape memory characteristics and a second type of wire strand comprising a metal with radiopaque characteristics. The first type of wire strand and the second type of wire strand are twisted or braided together to form the composite wire and then formed into the circular ring with at least two turns of the composite wire forming the ring. The reinforcement member can be a circular ring mounted into a fenestration (40) in a wall (32) of a stent graft, or mounted around a stent graft, or it can be a substantially U-shaped edging along the edge of a scalloped fenestration (44).
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: November 12, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: Werner Dieter Ducke, David Ernest Hartley
  • STENT GRAFT ADAPTOR
    Publication number: 20130297001
    Abstract: A stent graft adaptor has an outer graft tube and an inner graft tube with the inner graft tube substantially concentric with and within the outer graft tube. A joining member extends between the inner tube and the outer tube. The s joining member can be a continuous fold of graft material extending from a proximal end of the outer tube to a proximal end of the inner tube. The inner tube has at least one self expanding stent on an outer surface thereof and the outer graft tube has at least one self expanding stent on an inner surface. The outer surface of the outer tube provides a sealing surface to engage against the wall of a vessel and the inner tube provides a sealing surface to engage with a corresponding sealing surface of a stent graft deployed through it. The outer sealing surface can include barbs.
    Type: Application
    Filed: March 13, 2013
    Publication date: November 7, 2013
    Applicant: COOK MEDICAL TECHNOLOGIES LLC
    Inventors: Piotr Miroslaw Kasprzak, Werner Dieter Ducke, David Ernest Hartley, Blayne A. Roeder
  • Side branch stent graft construction
    Patent number: 8574288
    Abstract: A stent graft has a tubular body of a biocompatible material and at least one fenestration. A tubular side branch is stitched into the fenestration with a portion of the side branch extending within the tubular body and a portion of the side branch extending exteriorly of the tubular body. The stitching by which the side branch is mounted into the fenestration extends circumferentially and diagonally from one end of the side branch to the other such that the side branch extends from the tubular body at an angle thereto. The tubular side branch may have a reinforcement stent having at least one helical wire segment.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: November 5, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Susan Morriss, Werner Dieter Ducke, Timothy A. M. Chuter
  • Bifurcated/branch vessel prosthesis
    Patent number: 8545549
    Abstract: A stent graft has a tubular wall (1) defining a main lumen with at least one fenestration (15) in the wall. A tube (17) extends from the fenestration into the main lumen and is in fluid communication with the main lumen. An extension leg stent graft can be deployed from a branch vessel into the fenestration to seal into the tube. A flared guide (89) associated with the fenestration can be provided interiorly or exteriorly. There is also disclosed a bifurcated intraluminal prosthesis having a body (1), a first leg (7) and a second leg (17), the first leg extending from the body and the second leg extending into the body.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: October 1, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Robert James Allen, Brian Ridley Hopkinson
  • Anchor wire arrangement
    Patent number: 8506616
    Abstract: An endoluminal stent graft deployment system incorporating an anchor wire system for temporary anchoring of a stent graft on a delivery device. The anchor wire system has an anchor wire extending from the distal end of the device and releasably retained to the portion of the stent graft by a releasable retention system. The releasable retention system includes a bead on the proximal end of the anchor wire and an anchor release wire which has fastening arrangement to retain the release wire distally of the bead. The anchor release wire extends to a distal end of the deployment system so that the anchor wire release wire can be withdrawn thereby releasing the anchor wire.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: August 13, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Wolf Stelter, Michael Lawrence-Brown
  • Stent graft with valve arrangement
    Patent number: 8480726
    Abstract: A stent graft (10) has a tubular body with a side aperture (16) covered by a valve arrangement (18) and an arrangement to hold the valve open (32) with a release wire (30). Retraction of the release wire closes the valve. The stent graft can have a tubular body with a first bifurcation (134) with first and second legs (130, 132) extending from the bifurcation. The side aperture and valve arrangement can be in one of the legs. One of the legs (132) has a further bifurcation (142) to define a side arm (140). The stent graft can be deployed into the vasculature of a patient with the tubular body being in an aorta of the patient, a first leg extending down an iliac artery, a second leg being directed towards a contralateral iliac artery and the side arm directed to an internal artery of the contralateral iliac artery.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: July 9, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: Kylie F. Cunningham, Werner Dieter Ducke, David Ernest Hartley, Chantelle King, Blayne A. Roeder
  • Deployment device
    Patent number: 8475514
    Abstract: A stent graft deployment device (10) has a tubular fixed handle (34, 36) to be gripped and held by a user and an elongate release handle (30) extending through the fixed handle so that the release handle can be moved through the fixed handle. The deployment device assembly has a pusher (38) and a sheath (18) to cover a stent graft (64) on the pusher. The pusher is connected to the fixed handle and the sheath is connected to the release handle so that retraction of the release handle through the fixed handle causes the sheath to be retracted from the stent graft on the pusher. The fixed handle includes a grip component (34) that grips the pusher and a rotator component (36) that grips a release clamp (48) on the pusher. The release clamp has trigger wires for the release of the stent graft attached to it.
    Type: Grant
    Filed: August 13, 2008
    Date of Patent: July 2, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Werner Dieter Ducke
  • Fenestration for stent graft arrangements and stent graft including the same
    Patent number: 8470018
    Abstract: A fenestration (32) for a stent graft (30). The fenestration is an aperture in the biocompatible graft material and has at least one flap (38, 40) of a biocompatible graft material covering the aperture on the inside whereby the flap closes off the aperture but can be displaced to allow access through the fenestration. An array of such fenestrations may be placed on a stent graft to facilitate alignment of a branch vessel with a fenestration. A slip knot (46, 46) which can be released by forcing a dilator between the flaps can be used to hold the flaps together.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: June 25, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Krasnodar Ivancev
  • Iliac extension with flared cuff
    Patent number: 8449600
    Abstract: A leg extension (10) for a stent grafting system to connect between an aortic graft and an iliac graft. The leg extension is a tubular body (12) of a biocompatible graft material with self-expanding stents connected along the length of the tubular body and the tubular body having a distal end with a connection region. The connection region has a flared stent defining an external frusto-conical surface to provide a connection arrangement to engage within an internally flared portion of an iliac graft.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: May 28, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Werner Dieter Ducke
  • Thoracic arch stent graft and method of delivery
    Patent number: 8425585
    Abstract: A stent arrangement (12) and a stent graft (2) for curved lumens of the body. The stent graft has a tubular body (4) of a graft material, at least a portion of which may be arcuate to define an inner curved side (4b) and an outer curved side (4a) at least when deployed into the curved vessel. The stent graft has a plurality of self expanding stents (10, 12, 13) affixed thereto with a greater distance (11a) between the stents on the outer curved side than on the inner curved side. The stents can be normal, tapered on one or both ends or skewed. When mounted onto a deployment device a twist (152, 154) may be provided in the graft material between adjacent stents to nest the stents.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: April 23, 2013
    Assignee: Cook Medical Technologies LLC
    Inventors: Jeffry S. Melsheimer, David Ernest Hartley, Michael Lawrence-Brown, Gregory Paul Van Schie
  • Stent graft with internal tube
    Patent number: 8394136
    Abstract: A stent graft (1) with an internal tube (15) extending from the fenestration (11) within and towards an end of the tubular body (3) of the stent graft. An end of the tube remote from the fenestration is flared into a funnel or elliptical shape (17) to facilitate access into the internal tube from a main lumen of the stent graft. The flared portion is fastened (19) to the wall of the stent graft. The flared portion is held open with a resilient wire ring (21).
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: March 12, 2013
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Eric L. G. Verhoeven
  • Stent grafts for the thoracic aorta
    Patent number: 8377113
    Abstract: A method of temporarily reducing the diameter of a stent graft (10) and a stent graft with its diameter reduced. The stent graft has a tubular body and self expanding stents.
    Type: Grant
    Filed: May 12, 2008
    Date of Patent: February 19, 2013
    Assignees: William A. Cook Austraila Pty. Ltd., Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Werner Dieter Ducke
  • Introducer With Extension
    Publication number: 20130030514
    Abstract: A stent graft delivery device (1) has an elongated extension piece (20) extending from its proximal end of the introducer portion (3). The elongate extension piece is selectively separable from the introducer portion. A plurality of auxiliary guide wires (50) extend from through the stent graft delivery device and through the elongate extension piece. The auxiliary guide wires can cross over at the proximal end of the extension piece and return. The stent graft delivery device can be introduced into a patient via a femoral artery and the elongated extension piece can extend out an artery of the thoracic arch whereby to extend the auxiliary guide wires out of such an artery to give through and through guide wires. Catheterization of pararenal arteries is then possible via a brachial route.
    Type: Application
    Filed: March 18, 2011
    Publication date: January 31, 2013
    Inventors: Piotr Miroslaw Kasprzak, David Ernest Hartley, Werner Dieter Ducke, Blayne A. Roeder
  • Branch stent graft deployment and method
    Patent number: 8361134
    Abstract: A deployment system for introducing stent grafts which have a side arm or into which a side arm can be deployed. For instance the stent graft can be deployed into the thoracic arch of a patient. The deployment system including an introducer (1), an auxiliary catheter (13) disposed within the introducer and an auxiliary guide wire (14) disposed within the auxiliary catheter. The auxiliary guide wire extends to adjacent the proximal end (6) of the introducer an can be extended from the proximal end of the introducer so that it can be snared from a side branch artery (56) to assist with deployment of a side arm (23) of the stent graft into the side artery or for the deployment of a side arm stent graft into the stent graft.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: January 29, 2013
    Assignees: Cook Medical Technologies LLC, William A. Cook Australia Pty. Ltd.
    Inventors: David Ernest Hartley, Michael Lawrence-Brown, Wolf Stelter, Krasnodar Ivancev, Eric L. G. Verhoeven
  • Laparoscopic vascular access
    Patent number: 8357190
    Abstract: A laparoscopic vascular conduit arrangement has an elongate graft tube (1, 10) which is placed through a body cavity into a body vessel using a laparoscopic port sheath (70) with a distal valve (73) and a second sheath (80) with distal valve (86, 87). The graft tube (1, 10) extends through the laparoscopic port sheath so that the distal end (108) of the graft tube extends out of its valve and the proximal end of the graft tube extends out of the proximal end of the laparoscopic port sheath. The second sheath (80) is deployed into the distal end (108) of the graft tube (1, 10) such that the first valve (73) seals around the graft tube and the second sheath (84). The proximal end of the graft tube can be deployed into the vessel of the body to allow access into the vessel through the graft tube via the second valve. The conduit can be removed after use or used to provide vascular bypass.
    Type: Grant
    Filed: May 8, 2006
    Date of Patent: January 22, 2013
    Assignees: Cook Medical Technologies LLC, William A. Cook Australia Pty. Ltd.
    Inventors: Shirley Jane Fearn, David Ernest Hartley, Michael Lawrence-Brown