Patents Assigned to Salviac Limited
  • Publication number: 20060286145
    Abstract: A delivery and deployment system for a self-expanding stent comprises a proximal handle having a rotatable thumbscrew and a sliding component which is attached to a distal stent restraining sheath. A rigid open coil spring is provided for converting rotation of the thumbscrew into translation of the sliding component). The spring is attached to the thumbscrew. The sliding component is located between adjacent coils of the spring. Rotation of the thumbscrew twists the spring and slowly slides the sliding component and hence the distal sheath in the proximal direction to uncover the stent, removing the constraint on the stent which is accurately deployed at the site of interest. The handle has a guide elongate channel which constrains the sliding component so that it cannot move in a rotational direction.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 21, 2006
    Applicant: Salviac Limited
    Inventors: Steven Horan, Eamon Brady, Martin Keegan
  • Patent number: 7144408
    Abstract: An embolic protection filter system comprises a collapsible embolic protection filter 62 having a collapsed configuration for delivery of the filter, and a deployed configuration and a temporary lumen defining member 60. The lumen defining member 60 is used for loading a filter-containing delivery catheter 63 onto a guidewire 65. After loading, the member 60 can be removed by pulling on a tab 61.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: December 5, 2006
    Assignee: Salviac Limited
    Inventors: Martin Keegan, Eamon Brady, Brendan Casey, David Vale, John Neilan, Morgan Tierney
  • Patent number: 7094243
    Abstract: A catheter (2) is used in medical applications, for example for the retrieval of a sample from a patient or the insertion or retrieval of medical devices such as filters, stents (3) to and from the patient. The catheter (2) includes an expandable tip (6) at a leading portion of a catheter tube portion (5). This expandable tip (6) can retrieve or deliver samples, medical devices, etc. (3), which are slightly larger than the dimensions of a main catheter tube (5) inserted into the patient. The expandable tip (6) can also include extension members (10) which provide axial support to the expandable tip (6) but which still allow expansion in the radial direction.
    Type: Grant
    Filed: March 7, 2003
    Date of Patent: August 22, 2006
    Assignee: Salviac Limited
    Inventors: Patrick Mulholland, Gerard O'Carroll, Dominic Conlon, David Vale, Eamon Brady
  • Patent number: 7037320
    Abstract: A support 103 for an embolic protection device comprises round wires 116 which may form one or more support hoops for a filter body. The circumferential hoop formed by the wires 116 ensures that in the expanded position, the filter body 102 will be supported by the support frame 103 in circumferential apposition with the interior wall of the vasculature. The wires 116 may have a strain distributing linkage element in the form of a loop 120 in. The loop 120 acts as a diameter or circumference adjuster allowing an embolic protection device to adapt to different vessel contours and sizes whilst maintaining apposition with the vessel wall. The strain relieving geometry of the loops enhances the compliance of the bend points without creating a weakened hinge point, thus ensuring that there is no discontinuity in the circumferential seal against the vessel wall.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: May 2, 2006
    Assignee: Salviac Limited
    Inventors: Eamon Brady, David Vale, Ronald Kellly, John Neilan, Steven Horan, Gerard Rabitte, Gerry McCaffrey
  • Publication number: 20060089663
    Abstract: An embolic protection device has a collapsible filter element (105) mounted on a carrier such as a guidewire (101). The filter element (105) collapses into the outer end of a catheter (118) for deployment and retrieval through a vascular system of a patient. The filter element (105) has a collapsible filter body with a proximal inlet end and a distal outlet end. The proximal inlet end has inlet openings sized to allow blood and embolic material enter the filter body. The outlet end has outlet openings which allow through passage of blood but retain embolic material within the filter body. After use, the catheter (118) is movable along the guidewire (101) to engage the proximal end of the filter element and close the inlet openings before sliding over the filter element from the proximal end to the distal end to progressively collapse the filter body on the guidewire (101) for retrieval.
    Type: Application
    Filed: March 8, 2005
    Publication date: April 27, 2006
    Applicant: Salviac Limited
    Inventors: Paul Gilson, Eamon Brady, Padraig Maher, David Vale, Charles Taylor
  • Patent number: 7018372
    Abstract: A catheter 1 suitable for advancement through a body passageway of a patient. The catheter 1 comprises a catheter body 4 which is flexible to provide the necessary trackability for the catheter 1 to advance through a body passageway, and two stainless steel reinforcement wires 5 extending along the catheter body 4 which provide the necessary pushability to advance the catheter 1 through the passageway. The reinforcements 5 are positioned diametrically opposed to one another by approximately 180 degrees on opposite sides of the longitudinal axis of the catheter 1, and the catheter body 4 is relatively soft and twistable. This configuration enables the entire catheter 1 to spontaneously twist during advancement so that the reinforcements 5 orientate themselves along a plane of neutral bending during advancement of the catheter 1. In this way, any resistance to the trackability of the catheter 1 due to the stiff reinforcements 5 is minimized.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: March 28, 2006
    Assignee: Salviac Limited
    Inventors: Brendan Casey, Avril O'Higgins, Eamon Brady, Patrick Griffin
  • Patent number: 7014647
    Abstract: An embolic protection device has a support frame incorporating tethering features for connecting the support frame distally and/or proximally and/or intermediately to a carrier. Tethers may also be used additionally or alternatively for connecting various elements of a support frame. The tethers may be used to connect a support hoop 503 to a tubular member 504. The tethers provide added safety and stability to the frame without any increase in the length of the device when wrapped down for delivery.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: March 21, 2006
    Assignee: Salviac Limited
    Inventors: Eamon Brady, David Vale, Ronald Kellly, John Neilan, Steven Horan, Gerard Rabitte, Gerry McCaffrey
  • Publication number: 20050288705
    Abstract: An embolic protection device 100 comprises a collapsible filter element 105 for delivery through a vascular system of a patient. The filter element 105 comprising a collapsible filter body 110 and a filter support frame 111 contacting the filter body 110. The collapsible filter body 110 has an inlet end and an outlet end, the inlet end of the filter body having one or more inlet openings 117 sized to allow blood and embolic material enter the filter body 110, the outlet end of the filter body having a plurality of outlet openings 119 sized to allow through passage of blood but to retain undesired embolic material within the filter body 110. The filter support frame 111 is movable between a collapsed position for movement through the vascular system and an extended outwardly projecting position to support the filter body 110 in the expanded position.
    Type: Application
    Filed: March 1, 2005
    Publication date: December 29, 2005
    Applicant: Salviac Limited
    Inventors: Paul Gilson, Michael Gilvarry, Eamon Brady, David Vale, Steven Horan
  • Publication number: 20050283184
    Abstract: An embolic protection device has a collapsible filter element (105) mounted on a carrier such as a guidewire (101). The filter element (105) collapses into the outer end of a catheter (118) for deployment and retrieval through a vascular system of a patient. The filter element (105) has a collapsible filter body with a proximal inlet end and a distal outlet end. The proximal inlet end has inlet openings sized to allow blood and embolic material enter the filter body. The outlet end has outlet openings which allow through passage of blood but retain embolic material within the filter body. After use, the catheter (118) is movable along the guidewire (101) to engage the proximal end of the filter element and close the inlet openings before sliding over the filter element from the proximal end to the distal end to progressively collapse the filter body on the guidewire (101) for retrieval.
    Type: Application
    Filed: December 15, 2004
    Publication date: December 22, 2005
    Applicant: Salviac Limited
    Inventors: Paul Gilson, Eamon Brady, Padraig Maher, David Vale, Charles Taylor
  • Patent number: 6964672
    Abstract: An embolic protection device comprises a collapsible filter body and a filter support for the filter body. The filter support comprises a support frame defined by at least two wire segments having terminations. The terminations of adjacent segments are fixed relative to one another and extend generally parallel in a bifilar manner for enhanced trackability and flexibility.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: November 15, 2005
    Assignee: Salviac Limited
    Inventors: Eamon Brady, David Vale, Ronald Kelly, John Neilan, Steven Horan, Gerard Rabitte, Gerry McCaffrey
  • Publication number: 20050209634
    Abstract: An embolic protection device has a support frame incorporating tethering features for connecting the support frame distally and/or proximally and/or intermediately to a carrier. Tethers may also be used additionally or alternatively for connecting various elements of a support frame. The tethers may be used to connect a support hoop 503 to a tubular member 504. The tethers provide added safety and stability to the frame without any increase in the length of the device when wrapped down for delivery.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 22, 2005
    Applicant: Salviac Limited
    Inventors: Eamon Brady, David Vale, Ronald Kelly, John Neilan, Steven Horan, Gerard Rabitte, Garry McCaffrey
  • Publication number: 20050209635
    Abstract: An embolic protection device has a collapsible filter element (105) mounted on a carrier such as a guidewire (101). The filter element (105) collapses into the outer end of a catheter (118) for deployment and retrieval through a vascular system of a patient. The filter element (105) has a collapsible filter body with a proximal inlet end and a distal outlet end. The proximal inlet end has inlet openings sized to allow blood and embolic material enter the filter body. The outlet end has outlet openings which allow through passage of blood but retain embolic material within the filter body. After use, the catheter (118) is movable along the guidewire (101) to engage the proximal end of the filter element and close the inlet openings before sliding over the filter element from the proximal end to the distal end to progressively collapse the filter body on the guidewire (101) for retrieval.
    Type: Application
    Filed: March 1, 2005
    Publication date: September 22, 2005
    Applicant: Salviac Limited
    Inventors: Paul Gilson, Eamon Brady, Padraig Maher, David Vale, Charles Taylor
  • Patent number: 6918921
    Abstract: An embolic protection device comprises a collapsible filter element for delivery through a vascular system of a patient The filter element comprises a collapsible filter body 2 and a filter support 3 for the filter body. The filter body has an inlet end 4 and an outlet end 5, the inlet end 4 of the filter body has one or more inlet openings 6 sized to allow blood and embolic material enter the filter body 2 and the outlet end 5 of the filter body has a plurality of outlet openings 107 sized to allow through passage of blood but to retain undesired embolic material within the filter body 2. The filter support 3 is movable between a collapsed position for movement through the vascular system, and an extended outwardly projecting position to support the filter body in an expanded position The filter support 3 comprises a generally tubular support frame defined by at least one wire 16.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: July 19, 2005
    Assignee: Salviac Limited
    Inventors: Eamon Brady, David Vale, Ronald Kelly, John Neilan, Steven Horan, Gerard Rabitte, Gerry McCaffrey
  • Patent number: 6887256
    Abstract: An assembly for loading a collapsible embolic protection filter 1 into a catheter 2, comprises a catheter 2 defining a reception space at a distal end of the catheter 2 for receiving a collapsed embolic protection filter 1; and a separate removable pushing device 8 for delivering the embolic protection filter 1 into the reception space. The pushing device 8 comprises an elongate stem 71 with a proximal stop 72 for engagement with the filter 1. A separate loading device 7 to collapse the embolic protection filter 1 is also provided. The loading device 7 defines an inlet end and an outlet end, the outlet end being configured for co-operative alignment with the reception space.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: May 3, 2005
    Assignee: Salviac Limited
    Inventors: Paul Gilson, Charles Taylor, Patrick Griffin, Michael Gilvarry, David Vale, Eamon Brady
  • Publication number: 20040267302
    Abstract: A collapsible filter element for a transcatheter embolic protection device, the filter element comprises a collapsible filter body of polymeric material which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filer element. A proximal inlet portion of the filter body has one or more inlet openings sized to allow blood and embolic material enter the filter body. A distal outlet portion of the filter body has a plurality of generally circular outlet openings sized to allow through-passage of blood, but to retain embolic material within the filter body. The distal outlet portion of the filter body in the region of the outlet openings has means for reducing shear stress on blood passing through the outlet openings. The shear stress reducing means includes lead-in and lead-out radiussed portions of the filter body leading to the outlet holes.
    Type: Application
    Filed: October 22, 2003
    Publication date: December 30, 2004
    Applicant: SALVIAC Limited
    Inventors: Paul Gilson, Eamon Brady, Michael Gilvarry
  • Publication number: 20040260308
    Abstract: A medical catheter for the transvascular deployment of a collapsible medical device such as a filter has a tubular body formed by an inner tubular core surrounded by an outer thin-walled tube which is fixed to the core. The outer thin-walled tube extends outwardly beyond a distal end of the core to form a fixed thin-walled medical device embracing pod. The filter is carried on a guidewire which is slidably engagable within a central lumen of the core and the filter can be collapsed against the guidewire for loading within the pod. With the filter thus loaded within the pod the distal end of the catheter can be manoeuvred through a patient's vascular system to a desired deployment site where the filter is discharged from the pod allowing the filter to expand within the blood vessel for use filtering blood flowing through the blood vessel.
    Type: Application
    Filed: December 5, 2003
    Publication date: December 23, 2004
    Applicant: SALVIAC Limited
    Inventors: Paul Gilson, David Vale, Eamon Brady
  • Publication number: 20040127934
    Abstract: An embolic protection system 1 comprises a guidewire 99 for advancing through a vasculature, the guidewire 99 having a distal end and a proximal end; an embolic protection filter 1 having a filter body 41 with a distal end and a proximal end, the filter body 41 providing for a collapsed configuration and an expanded deployed configuration. The embolic protection filter body 41 has a guidewire path for slidably receiving the guidewire 99 to permit movement of the filter 1 relative to the guidewire 99 when the filter 1 is in the collapsed configuration and the expanded deployed configuration. A delivery catheter 2 is advanceable over the guidewire 99 for delivery of the embolic protection filter 1; the delivery catheter 2 having a proximal end and a distal end. The filter 1 is deployed from the distal end of the delivery catheter 2 into the expanded deployed configuration.
    Type: Application
    Filed: March 26, 2003
    Publication date: July 1, 2004
    Applicant: Salviac Limited
    Inventors: Paul Gilson, Charles Taylor, Patrick Grirrin, John Nielan, David Vale, Eamon Brady
  • Patent number: 6752819
    Abstract: A medical catheter for the transvascular deployment of a collapsaible medial device such as a filter has a tubular body formed by an inner tubular core surrounded by an outer thin-walled tube which is fixed to the core. The outer thin-walled tube extends outwardly beyond a distal end of the core to form a fixed thin-walled medical device embracing pod. The filter is carried on a guidewire which is slidably engagable within a central lumen of the core and the filter can be collapsed against the guidewire for loading within the pod. With the filter thus loaded within the pod the distal end of the catheter can be maneuvered through a patient's vascular system to a desired deployment site where the filter is discharged from the pod allowing the filter to expand within the blood vessel for use filtering blood flowing through the blood vessel.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: June 22, 2004
    Assignee: Salviac Limited
    Inventors: Eamon Brady, Paul Gilson, David Vale
  • Publication number: 20040093013
    Abstract: A collapsible filter element (40) for a transcatheter embolic protection device (1). The filter element (40) comprises a collapsible filter body (41) which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filter element (40). A proximal inlet portion of the filter body (41) has two inlet openings (50) sized to allow blood and embolic material enter the filter body (41), and a distal outlet portion of the filter body (41) has a plurality of small outlet openings (51) to allow through-passage of blood, but to retain embolic material within the filter body (41). The filter body (41) is of an oriented polymeric material.
    Type: Application
    Filed: March 31, 2003
    Publication date: May 13, 2004
    Applicant: SALVIAC Limited
    Inventors: Eamon Brady, Ronald Kelly
  • Patent number: 6726701
    Abstract: A collapsible filter element for a transcatheter embolic protection device, the filter element comprises a collapsible filter body of polymeric material which is movable between a collapsed stored position for movement through a vascular system and an expanded position for extension across a blood vessel such that blood passing through the blood vessel is delivered through the filer element. A proximal inlet portion of the filter body has one or more inlet openings sized to allow blood and embolic material enter the filter body. A distal outlet portion of the filter body has a plurality of generally circular outlet openings sized to allow through-passage of blood, but to retain embolic material within the filter body. The distal outlet portion of the filter body in the region of the outlet openings has means for reducing shear stress on blood passing through the outlet openings. The shear stress reducing means includes lead-in and lead-out radiussed portioins of the filter body leading to the outlet holes.
    Type: Grant
    Filed: November 7, 2001
    Date of Patent: April 27, 2004
    Assignee: Salviac Limited
    Inventors: Paul Gilson, Eamon Brady, Michael Gilvarry