Patents Assigned to Tayside Flow Technologies Ltd
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Patent number: 8454675Abstract: An internal formation for a conduit. The formation has a longitudinally extending member adapted to extend along an inside surface of at least a portion of the length of the conduit. The longitudinally extending member has an asymmetric profile in a direction transverse of the longitudinal axis of the member.Type: GrantFiled: May 24, 2004Date of Patent: June 4, 2013Assignee: Tayside Flow Technologies Ltd.Inventors: John Graeme Houston, Robert Gordon Hood, Peter Arno Stonebridge, John Bruce Cameron Dick
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Patent number: 8389088Abstract: A tubular conduit (1) is disclosed. The tubular conduit comprises a tubular portion made from a flexible material and an axially extending external helical formation (16) located around the outside of the tubular portion. The external helical formation (16) is for supporting the tubular portion. Optionally the tubular portion also comprises an axially extending internal helical protrusion (15), which imparts a helical flow to a fluid passing through the tubular portion. It is preferred that the tubular conduit (1) is a vascular graft.Type: GrantFiled: March 23, 2005Date of Patent: March 5, 2013Assignee: Tayside Flow Technologies Ltd.Inventors: Robert Gordon Hood, Craig McLeod Duff
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Publication number: 20120130314Abstract: A vascular access graft (1) comprises an elongate conduit (2) having proximal and distal ends (3, 4). At least a portion of the elongate conduit (2) has a self-sealing property such that the portion remains impermeable after puncturing by a dialysis needle. The vascular access graft (1) also comprises a helical fin (6) projecting inwardly from the inner surface (5) of the elongate conduit (2) and extending parallel to the axis of the elongate conduit (2).Type: ApplicationFiled: May 19, 2010Publication date: May 24, 2012Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: Peter Arno Stonebridge, John Bruce Cameron Dick, John Graeme Houston, Robert Gordon Hood
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Publication number: 20100298924Abstract: A tubular graft (1) comprises an elongate conduit (2) having distal and proximal ends (3, 4). The tubular graft (1) also comprises a helical fin (10) projecting inwardly from the inner surface of the elongate conduit (2) and extending parallel to the axis of the elongate conduit (2). The helical fin (10) extends from the distal end (3) of the elongate conduit (2) to a point (11) short of the proximal end (4) of the elongate conduit (2).Type: ApplicationFiled: May 19, 2009Publication date: November 25, 2010Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: John Graeme Houston, John Bruce Cameron Dick, Robert Gordon Hood, Peter Arno Stonebridge
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Publication number: 20100198337Abstract: A helical formation within a conduit and a method of determining the helix angle of the helical formation are disclosed. The method includes specifying the internal dimensions of the conduit and an intended fluid mass flow through the conduit. The helix angle is determined from the pressure drop and the turbulent kinetic energy for a conduit having the specified internal dimensions and intended fluid mass flow.Type: ApplicationFiled: April 8, 2010Publication date: August 5, 2010Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: John Graeme Houston, Robert Gordon Hood, Peter Arno Stonebridge, Allan Thomson
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Patent number: 7721767Abstract: A Method of Determining the Helix Angle of a Helical Formation for a Conduit. A method of determining the helix angle of a helical formation (4) within a conduit (1). The method includes specifying the internal dimensions of the conduit (1) and an intended fluid mass flow through the conduit (1). The helix angle is determined from the pressure drop and the turbulent kinetic energy for a conduit (1) having the specified internal dimensions and intended fluid mass flow.Type: GrantFiled: December 13, 2002Date of Patent: May 25, 2010Assignee: Tayside Flow Technologies Ltd.Inventors: John Graeme Houston, Robert Gordon Hood, Peter Arno Stonebridge, Allan Thomson
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Patent number: 7503226Abstract: A method of assessing the effect of a conduit section (11) on flow characteristics of a first fluid in a first conduit system (1). A first fluid is caused to flow through the first conduit system (1). A transverse flow parameter of the first fluid in the first conduit system (1) downstream of the conduit section (11) is detected. At least one transverse flow characteristic of the first fluid is determined from the detected transverse flow parameter. The effect of the conduit section (11) is then assessed from the determined flow characteristics.Type: GrantFiled: September 18, 2002Date of Patent: March 17, 2009Assignee: Tayside Flow Technologies LtdInventors: John Graeme Houston, Peter Arno Stonebridge, John Bruce Cameron Dick, Robert Gordon Hood, Allana Johnstone, Christophe Emmanuel Sarran, Craig McLeod Duff
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Publication number: 20070270939Abstract: A drug delivery device (1) is disclosed. The device comprises a vascular implant having a helical formation (4) that is capable of inducing helical flow of blood passing it. A drug is releasably associated with the helical formation.Type: ApplicationFiled: February 4, 2005Publication date: November 22, 2007Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: Robert Hood, Craig Duff
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Publication number: 20070204445Abstract: A tubular conduit (1) is disclosed. The tubular conduit comprises a tubular portion made from a flexible material and an axially extending external helical formation (16) located around the outside of the tubular portion. The external helical formation (16) is for supporting the tubular portion. Optionally the tubular portion also comprises an axially extending internal helical protrusion (15), which imparts a helical flow to a fluid passing through the tubular portion. It is preferred that the tubular conduit (1) is a vascular graft.Type: ApplicationFiled: March 23, 2005Publication date: September 6, 2007Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: Robert Hood, Craig Duff
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Publication number: 20070129783Abstract: A tubular graft comprising an internal helical formation which imparts helical flow on fluid passing through the tubular graft. One end of the tubular graft is tapered from an inner base to an outer tip.Type: ApplicationFiled: September 5, 2006Publication date: June 7, 2007Applicant: TAYSIDE FLOW TECHNOLOGIES LTD.Inventors: Robert Hood, Craig Duff