Patents by Inventor Geoffrey Douglas Tansley
Geoffrey Douglas Tansley 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).
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Patent number: 8900114Abstract: There is provided a pulsatile blood pump (10) for implantation into a patient. The pulsatile blood pump comprises a substantially tubular body (12) a flexible membrane (14) and a port (16). The substantially tubular body is for replacing a resected portion of a blood vessel of the patient. The substantially tubular body has first and second ends with a blood passageway extending therebetween for the passage of blood. The flexible membrane is attached to the tubular body so as to form a fluid chamber between the flexible membrane and an inner surface of the tubular body. The flexible membrane thereby separates the fluid chamber from the blood passageway. The tubular body comprises the port.Type: GrantFiled: September 29, 2008Date of Patent: December 2, 2014Assignee: Nottingham University Hospitals NHS TrustInventors: Geoffrey Douglas Tansley, David Richens
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Patent number: 8870552Abstract: A pump assembly and estimation and control system therefor, the pump adapted for continuous flow pumping of blood. In a particular form, the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is exclusively hydrodynamically suspended therein against movement in three translational and two rotational degrees of freedom as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top surfaces thereof.Type: GrantFiled: August 24, 2012Date of Patent: October 28, 2014Assignee: Thoratec CorporationInventors: Peter Joseph Ayre, Geoffrey Douglas Tansley, Peter Andrew Watterson, John Campbell Woodard
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Publication number: 20130052038Abstract: A pump assembly and estimation and control system therefor, the pump adapted for continuous flow pumping of blood. In a particular form, the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is exclusively hydrodynamically suspended therein against movement in three translational and two rotational degrees of freedom as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top surfaces thereof.Type: ApplicationFiled: August 24, 2012Publication date: February 28, 2013Applicant: Thoratec CorporationInventors: Peter Joseph Ayre, Geoffrey Douglas Tansley, Peter Andrew Watterson, John Campbell Woodard
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Patent number: 8366381Abstract: A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular from the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrodynamically suspended therein as the impeller rotates within the fluid 105 urged by electromagnetic means external to the pump cavity 106, 203. Hydrodynamic suspension is assisted by the impeller 100, 204 having deformities therein such as blades 8 with surfaces tapered from the leading edges 102, 223 to the trailing edges 103, 224 of bottom and top edges 221, 222 thereof.Type: GrantFiled: July 12, 2011Date of Patent: February 5, 2013Assignee: Thoratec CorporationInventors: John Campbell Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
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Patent number: 8366599Abstract: An axial flow rotary blood pump including an impeller adapted to be magnetically rotated within a housing by the interaction of magnets disposed on or in the impeller and stators disposed on or in the housing. The impeller includes at least one support ring supporting a plurality of blades, and a hydrodynamic bearing that operates at least axially and radially in respect of an axis of rotation of the impeller.Type: GrantFiled: August 20, 2010Date of Patent: February 5, 2013Assignee: Thoratec CorporationInventors: Geoffrey Douglas Tansley, Martin Christopher Cook, John Campbell Woodard
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Patent number: 8282359Abstract: A pump assembly and estimation and control system therefor, the pump adapted for continuous flow pumping of blood. In a particular form, the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is exclusively hydrodynamically suspended therein against movement in three translational and two rotational degrees of freedom as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top surfaces thereof.Type: GrantFiled: August 10, 2009Date of Patent: October 9, 2012Assignee: Thoratec CorporationInventors: Peter Joseph Ayre, Geoffrey Douglas Tansley, Peter Andrew Watterson, John Campbell Woodard
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Publication number: 20120016178Abstract: A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular from the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrodynamically suspended therein as the impeller rotates within the fluid 105 urged by electromagnetic means external to the pump cavity 106, 203. Hydrodynamic suspension is assisted by the impeller 100, 204 having deformities therein such as blades 8 with surfaces tapered from the leading edges 102, 223 to the trailing edges 103, 224 of bottom and top edges 221, 222 thereof.Type: ApplicationFiled: July 12, 2011Publication date: January 19, 2012Applicant: Thoratec CorporationInventors: John Campbell Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
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Patent number: 8002518Abstract: A pump assembly adapted for continuous flow pumping of blood. In a particular form the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is hydrodynamically suspended therein as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top edges thereof.Type: GrantFiled: December 31, 2008Date of Patent: August 23, 2011Assignee: Thoratec CorporationInventors: John Campbell Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
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Publication number: 20110065978Abstract: An axial flow rotary blood pump including an impeller adapted to be magnetically rotated within a housing by the interaction of magnets disposed on or in the impeller and stators disposed on or in the housing. The impeller includes at least one support ring supporting a plurality of blades, and a hydrodynamic bearing that operates at least axially and radially in respect of an axis of rotation of the impeller.Type: ApplicationFiled: August 20, 2010Publication date: March 17, 2011Applicant: Thoratec CorporationInventors: Geoffrey Douglas Tansley, Martin Christopher Cook, John Campbell Woodard
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Patent number: 7798952Abstract: An axial flow rotary blood pump including an impeller (5) adapted to be magnetically rotated within a housing by the interaction of magnets disposed on or in the impeller and stators disposed on or in the housing. The impeller includes at least one support ring (2) supporting a plurality of blades (4), and a hydrodynamic bearing (3) that operates at least axially and radially in respect of an axis of rotation of the impeller (5).Type: GrantFiled: October 8, 2004Date of Patent: September 21, 2010Assignee: Thoratec CorporationInventors: Geoffrey Douglas Tansley, Martin Christopher Cook, John Campbell Woodard
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Publication number: 20100204539Abstract: There is provided a pulsatile blood pump (10) for implantation into a patient. The pulsatile blood pump comprises a substantially tubular body (12) a flexible membrane (14) and a port (16). The substantially tubular body is for replacing a resected portion of a blood vessel of the patient. The substantially tubular body has first and second ends with a blood passageway extending therebetween for the passage of blood. The flexible membrane is attached to the tubular body so as to form a fluid chamber between the flexible membrane and an inner surface of the tubular body. The flexible membrane thereby separates the fluid chamber from the blood passageway. The tubular body comprises the port.Type: ApplicationFiled: September 29, 2008Publication date: August 12, 2010Inventors: Geoffrey Douglas Tansley, David Richens
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Publication number: 20100185280Abstract: A pump assembly and estimation and control system therefor, the pump adapted for continuous flow pumping of blood. In a particular form, the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is exclusively hydrodynamically suspended therein against movement in three translational and two rotational degrees of freedom as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top surfaces thereof.Type: ApplicationFiled: August 10, 2009Publication date: July 22, 2010Applicants: Ventrassist Pty. Ltd, University of TechnologyInventors: Peter Joseph Ayre, Geoffrey Douglas Tansley, Peter Andrew Watterson, John Campbell Woodard
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Publication number: 20090155049Abstract: A pump assembly 1, 33, 200 adapted for continuous flow pumping of blood. In a particular form the pump 1, 200 is a centrifugal pump wherein the impeller 100, 204 is entirely sealed within the pump housing 2, 201 and is exclusively hydrodynamically suspended therein as the impeller rotates within the fluid 105 urged by electromagnetic means external to the pump cavity 106, 203. Hydrodynamic suspension is assisted by the impeller 100, 204 having deformities therein such as blades 8 with surfaces tapered from the leading edges 102, 223 to the trailing edges 103, 224 of bottom and top edges 221, 222 thereof.Type: ApplicationFiled: December 31, 2008Publication date: June 18, 2009Applicants: Ventrassist Pty Ltd., University of Technology at SydneyInventors: John Campbell Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
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Patent number: 7156802Abstract: This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blades with the edges of the blades used as hydrodynamic thrust bearings and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.Type: GrantFiled: August 5, 2003Date of Patent: January 2, 2007Assignee: Ventrassist Pty Ltd. and University of Technology, SydneyInventors: John Campbell Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
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Patent number: 6866625Abstract: A pump assembly and estimation and control system therefor, the pump adapted for continuous flow pumping of blood. In a particular form, the pump is a centrifugal pump wherein the impeller is entirely sealed within the pump housing and is exclusively hydrodynamically suspended therein against movement in three translational and two rotational degrees of freedom as the impeller rotates within the fluid urged by electromagnetic means external to the pump cavity. Hydrodynamic suspension is assisted by the impeller having deformities therein such as blades with surfaces tapered from the leading edges to the trailing edges of bottom and top surfaces thereof.Type: GrantFiled: April 20, 2000Date of Patent: March 15, 2005Assignees: Ventrassist Pty Ltd, University of TechnologyInventors: Peter Joseph Ayre, Geoffrey Douglas Tansley, Peter Andrew Watterson, John Campbell Woodard
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Publication number: 20040147802Abstract: An implantation regime for a ventricular assist device (VAD) comprising implanting a first VAD (13) intended for short term use for a predetermined period of time and then determining whether the heart can operate without further assistance after this period of time. A second VAD (30) intended for long term use may then be implanted if necessary. Also disclosed are percutaneous leads (40) that have surface treatments (45, 47) to enable tissue ingrowth in certain areas and prevent tissue ingrowth in other areas, and an embolisation device (21, 22) carrying a coagulating material (27) for sealing an implanted cannula (15, 16) between the use of the first and second VADs.Type: ApplicationFiled: February 10, 2004Publication date: July 29, 2004Inventors: John Campbell Woodard, Geoffrey Douglas Tansley
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Publication number: 20040030216Abstract: This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blades with the edges of the blades used as hydrodynamic thrust bearings and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.Type: ApplicationFiled: August 5, 2003Publication date: February 12, 2004Inventors: John Campbell Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
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Patent number: 6609883Abstract: This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blades with the edges of the blades used as hydrodynamic thrust bearings and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.Type: GrantFiled: December 11, 2000Date of Patent: August 26, 2003Assignees: Ventrassist Pty Ltd, University of Technology SydneyInventors: John Campbell Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
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Publication number: 20010004435Abstract: This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blades with the edges of the blades used as hydrodynamic thrust bearings and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.Type: ApplicationFiled: December 11, 2000Publication date: June 21, 2001Inventors: John Campbell Woodard, Peter Andrew Watterson, Geoffrey Douglas Tansley
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Patent number: 6227797Abstract: This invention relates to rotary pumps adapted, but not exclusively, for use as artificial hearts or ventricular assist devices and, in particular, discloses in preferred forms a seal-less shaft-less pump featuring open or closed (shrouded) impeller blades with the edges of the blades used as hydrodynamic thrust bearing and with electromagnetic torque provided by the interaction between magnets embedded in the blades and a rotating current pattern generated in coils fixed relative to the pump housing.Type: GrantFiled: March 30, 1999Date of Patent: May 8, 2001Assignee: VentrAssist Pty Ltd and University of TechnologyInventors: Peter Andrew Watterson, Geoffrey Douglas Tansley, John Campbell Woodard