Patents Represented by Attorney Richard J. Godlewski
  • Patent number: 8262718
    Abstract: A stent graft introducer (1) which includes a handle arrangement which by telescopic movement of a slide or slide portions (104, 106) into a handle portion (100) causes controlled sequential deployment of a stent graft (14). Stops (218, 217, 218, 219) ensure actions are carried out in a selected order. A sheath (116) of the introducer is fixed to a slide portion such that with retraction of the slide portion the sheath is withdrawn from a stent graft retained on the introducer and at a selected position trigger wires retaining the stent graft onto the introducer are also released. Interconnections between the slides and the handle are provided to prevent relative rotation and re-extension after full retraction.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: September 11, 2012
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies LLC
    Inventors: Timothy A. Chuter, Michael Lawrence-Brown, David E. Hartley
  • Patent number: 8235946
    Abstract: There is disclosed a tri-leaflet valve (100) in which the leaflets (102) extend for substantially the entire length of the valve (100). The valve (100) is provide with a waist (106). An element (16) inserted in the tri-leaflet valve (100) can be sealed by closure of the valve (100), for example by pressurization or twisting. The seat is more effective then prior art seals.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: August 7, 2012
    Assignee: Cook Medical Technologies LLC
    Inventor: Arne Molgaard-Nielsen
  • Patent number: 8226706
    Abstract: A fenestrated stent graft with a tubular side arm extending there from in which the side arm can be turned inside out to extend into the stent graft during deployment of the stent graft and extended out during deployment. Also disclosed is a deployment device for such a side arm stent graft which has a deployment catheter and a side arm guide, the side arm guide is releasably fastened at a proximal end to the branch tube and is able to be moved independently of the deployment catheter such that the branch tube can be extended from the tubular body of the stent graft while it is fastened onto the side arm guide. The side arm guide can be formed from a side arm catheter and a side arm guide wire carried in the side arm catheter.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: July 24, 2012
    Assignees: Cook Medical Technologies LLC, William A. Cook Australia Pty. Ltd.
    Inventors: David Ernest Hartley, Erik E. Rasmussen, Krasnodar Ivancev
  • Patent number: 8172895
    Abstract: A method of sizing of a stent graft (20) including placement of fenestrations (30, 32) to ensure access to side branch vessels (13, 15) through the fenestrations when the stent graft is introduced into a body vessel and an assembly method for a stent graft including temporary diameter reduction arrangements to enable partial release of a stent graft to assist with positioning of fenestrations with respect to side branch vessels. The method includes spacing the fenestrations to be the same circumferential distance as the side branch vessels irrespective of the diameter of the stent graft.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: May 8, 2012
    Assignees: Cook Medical Technologies LLC, William A. Cook Australia Pty. Ltd.
    Inventors: John Lennon Anderson, David Ernest Hartley, Michael Lawrence-Brown
  • Patent number: 8167926
    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: November 7, 2007
    Date of Patent: May 1, 2012
    Assignees: Cook Medical Technologies LLC, William A. Cook Australia Pty. Ltd.
    Inventors: David Ernest Hartley, Krasnodar Ivancev
  • Patent number: 8167930
    Abstract: A stent graft (2) for treatment of an emergency rupture of, for instance, the aorta adjacent the aortic bifurcation. The stent graft comprising a tubular body (8) with a bifurcation (10) in the tubular body defining a first long leg (12) and a second short leg (14). The second leg has a valve arrangement (18) to prevent fluid flow through the second leg from the stent graft. The valve can be opened from external of the stent graft for the placement of a leg extension stent graft (90) therethrough.
    Type: Grant
    Filed: November 7, 2007
    Date of Patent: May 1, 2012
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies LLC
    Inventors: Robert James Allen, David Ernest Hartley, Werner D. Ducke
  • Patent number: 8163005
    Abstract: A vascular band (1) comprises a biocompatible flexible material (2) and a plurality of radiopaque bars (4) extending transversely across the width of the material and spaced apart along the length of the biocompatible material. The bars provide some rigidity to the flexible material in the width direction thereby preventing buckling of the band in use and the radiopaque nature of the bars enable visualization of a landing zone for a stent graft during deployment thereof. The bars can be crimped or woven into the material. The band can be stitched, stapled, or hooked around a vessel.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: April 24, 2012
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies LLC
    Inventor: Michael Lawrence-Brown
  • Patent number: 8118854
    Abstract: An endovascular delivery device (2) for a stent graft which has a pusher catheter (4), a flexible sheath (10) over the pusher catheter and at least one auxiliary catheter (32) extending between the pusher catheter and the flexible sheath. The pusher catheter has one or more longitudinal grooves (30) on its outside surface and the auxiliary catheter or catheters extend along the longitudinal grooves. A guide wire in the auxiliary catheter can be used to pre-catheterize a fenestration in the stent graft and a branch stent or stent graft delivered through the auxiliary catheter.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: February 21, 2012
    Assignee: Cook Medical Technologies LLC
    Inventor: Jason S. Bowe
  • Patent number: 8118855
    Abstract: A curve forming stent graft for curved vessels such as the thoracic arch. The stent graft has a tubular body zig zag self expanding stents fastened to and supporting the tubular body. The zig zag self expanding stents comprising struts and points between adjacent struts thereby defining proximal end points and distal end points. A temporary diameter constriction arrangement associated with the least some of the plurality of zig zag self expanding stents comprises a pair of adjacent distal end points being releasably retained adjacent each other whereby at rest the tubular body of the stent graft is in a substantially sawtooth form and when released in a curved configuration a distal end point of a stent overlaps a proximal end point of a distally adjacent stent to facilitate curvature of the stent graft in a curved vessel.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: February 21, 2012
    Assignees: Cook Medical Technologies LLC, William A. Cook Australia Pty. Ltd.
    Inventors: David Ernest Hartley, Blayne A. Roeder, Werner D. Ducke
  • Patent number: 8118784
    Abstract: The haemostatic valve assembly (10) includes a housing (14) with a chamber (16) therewithin. A flexible valve element (26) is located in the chamber (16) and supported by the housing (14). A source (28) of pressurized fluid can be fed into the chamber (16) through a port (18) in the housing (14). A catheter, dilator, pusher or other elongate insert fed through the haemostatic valve assembly (10) can be sealed by the application of fluid pressure into the chamber (16), which causes the sides of the valve element (26) to press against the insert (24) thereby to provide an effective seal.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: February 21, 2012
    Assignee: Cook Medical Technologies LLC
    Inventor: Arne Molgaard-Nielsen
  • Patent number: 8092468
    Abstract: A deployment handle (112) for an implant deployment device (10) facilitates withdrawal of a sheath (18). The deployment handle (112) includes two separate actuators: a trigger (130) and a sliding actuator (330). The trigger (130) can be used to effect small step-wise movement of a carriage (120) that is connected to a sheath (18) to be withdrawn. The sliding actuator (330) can be used to effect continuous movement of a carriage (120) to withdraw a sheath (18). In order to transmit movement of either the trigger (130) or the sliding actuator (330) to the carriage (120), a flexible rack (380) is used. The flexible rack (380) includes upper teeth (390) and lower teeth (395) for engagement with the trigger (130) and the sliding actuator (330) respectively. The ability of the flexible rack (380) to bend back on itself means that unnecessary elongation of the deployment handle (112) is avoided.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: January 10, 2012
    Assignee: Cook Medical Technologies LLC
    Inventor: Palle Hansen
  • Patent number: 8092516
    Abstract: A rotationally-symmetric stent graft for deploying in a curved vessel has identical spaced stents along its length, with the stents being further apart in the region of the greatest curvature. The ends of the stents are parallel to each other and to the ends of the graft. The inter-stent spacing may vary along the entire length of the graft or only adjacent one end.
    Type: Grant
    Filed: November 6, 2009
    Date of Patent: January 10, 2012
    Assignee: Cook Medical Technologies LLC
    Inventors: Erik Rasmussen, Kim Moegelvang Jensen
  • Patent number: 8066756
    Abstract: A deployment device for deploying stents, stent-grafts and other implants into a patient includes a catheter (112) with a containment sheath (116). Held onto the catheter (112) is a stent-graft structure (120). The containment sheath (116) extends over the entirety of the stent graft section (122) so as to constrain it in its entirety on the catheter (112), until the sheath (116) is removed. The containment sheath (116) extends from the distal position (126) of the stent graft section (122) to the tip (114) and then into the central lumen (128) of the catheter (112). It may extend throughout the lumen (128) to the proximal end of the deployment device (10), in other words to the external manipulation section of the delivery device (10). The sheath (116) is withdrawn by pulling towards the external manipulation section of the delivery device. As this is effected, the containment sheath (116) is pulled over the end (114) of the catheter and into the central lumen (128) of the catheter (112).
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: November 29, 2011
    Assignee: Cook Medical Technologies LLC
    Inventors: Erik E. Rasmussen, Lars S. Nimgaard
  • Patent number: 8043354
    Abstract: A stent graft introducer for intraluminal deployment of a stent graft (26), the introducer comprising a stent graft release mechanism (6) to allow partial release of the stent graft (26) when carried on the introducer, whereby control of the stent graft can be maintained while allowing access into the lumen of the stent graft from at least one end of the stent graft. The partial release can comprise partial release of one end of the stent graft.
    Type: Grant
    Filed: June 15, 2005
    Date of Patent: October 25, 2011
    Assignees: William A. Cook Australia Pty. Ltd., The Cleveland Clinic Foundation, Cook Medical Technologies LLC
    Inventors: Roy K. Greenberg, David Ernest Hartley, Michael Lawrence-Brown
  • Patent number: 8034093
    Abstract: An endoscopic or laparoscopic conduit delivery device (1) includes first and second separately manipulable introducers (3, 5) with a laparoscopic conduit (80) having first and second ends (83, 84) and an intermediate portion being mounted onto the introducers in a substantially U shape. The first end and a first portion of the laparoscopic conduit is retained onto the first introducer and the second end and a second portion of the laparoscopic conduit is retained on the second introducer and the intermediate portion extends between the first and second introducers. A main sheath (42) is over the first and second introducers. The endoscopic or laparoscopic conduit delivery device is introduced to a body cavity through an endoscopic or laparoscopic port (50).
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: October 11, 2011
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Michael Lawrence-Brown, Shirley Jansen
  • Patent number: 8021412
    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 20, 2007
    Date of Patent: September 20, 2011
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Werner Dieter Ducke
  • Patent number: 7998189
    Abstract: A stent-graft (100) is provided with a tightenable loop element (122) having a first end terminated in a self-tightening knot (142) and a second end (138) which is received in and can slide in the knot (142). The loop (122) is fitted to the stent-graft (100) in a manner as to cause curvature of the stent-graft (100) upon tightening of the loop. An introducer assembly is also disclosed which includes a cannula (132, 150) within which a pull cord (136) and release wire (134) are located.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: August 16, 2011
    Assignee: Cook Medical Technologies LLC
    Inventors: Tilo K├Âlbel, Martin Malina
  • Patent number: 7998187
    Abstract: A connection socket (12) for an end of a stent graft or a side arm (10) of a stent graft. The connection socket has a first resilient ring (14) around the arm at its end, a second resilient ring (16) spaced apart along the arm from the first ring and optionally a zig zag resilient stent (20) between the first and second rings. Each of the rings is of slightly lesser diameter than the side arm. The zig-zag resilient stent can be a compression stent.
    Type: Grant
    Filed: September 21, 2005
    Date of Patent: August 16, 2011
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies LLC
    Inventors: David Ernest Hartley, Eric L. G. Verhoeven
  • Patent number: 7993383
    Abstract: A stent assembly (42) adapted for endoluminal placement by endovascular deployment for the treatment of a false lumen (10) associated with a vascular dissection. The stent assembly has a number of self expanding stents (35) connected together to define an elongate substantially cylindrical lumen wall engaging surface. The stents are adapted to provided pressure on the wall of the lumen adjacent to and extending away from a rupture. A deployment device (40) for the stent assembly includes a sheath (48) and a retention and release arrangement (50) to retain the proximal end (37) of the stent graft to the deployment device. Release of the stent assembly is by withdrawal of the sheath before release of its proximal end by the use of a trigger wire (54) of the retention and release arrangement.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: August 9, 2011
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies lLC
    Inventors: David Ernest Hartley, Erik E. Rasmussen, Thomas C. McIntyre
  • Patent number: 7996272
    Abstract: A system for designing and ordering a stent graft is described. The system includes a user interface for designing and ordering the stent graft, and a centralised data processor remote from and in communication with the user interface for processing and storing entered information. The user interface further includes a selection portion for selecting a stent graft design and a design portion for entering a plurality of design parameters related to the stent graft design. A verification portion is also provided to verify details of a completed stent graft design with an ordering portion to order the completed stent graft design. In one embodiment the verification portion includes the capability to display a 3-dimensional view of the completed stent graft design.
    Type: Grant
    Filed: October 12, 2006
    Date of Patent: August 9, 2011
    Assignees: William A. Cook Australia Pty. Ltd., Cook Medical Technologies LLC
    Inventors: Allan Joseph Hilling Smith, David Andrew Coulson