Patents by Inventor Hugh Van Liew
Hugh Van Liew 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: 10472100Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurized canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimizing the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: GrantFiled: May 8, 2015Date of Patent: November 12, 2019Assignee: BTG International Ltd.Inventors: David Dakin Iorwerth Wright, Anthony David Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey D. Moggridge, Hugh Van Liew
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Publication number: 20160101881Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: ApplicationFiled: May 8, 2015Publication date: April 14, 2016Inventors: David Dakin Iorwerth WRIGHT, Anthony David HARMON, Nikki ROBINSON, Garry HODGES, Adil KADAR, Geoffrey D. MOGGRIDGE, Hugh VAN LIEW
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Publication number: 20140221501Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: ApplicationFiled: April 9, 2014Publication date: August 7, 2014Applicant: BTG International Ltd.Inventors: David Dakin Iorwerth WRIGHT, Anthony David HARMAN, Nikki ROBINSON, Garry HODGES, Adil KADAR, Geoffrey D. MOGGRIDGE, Hugh VAN LIEW
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Patent number: 8734833Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurized canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimizing the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: GrantFiled: November 2, 2012Date of Patent: May 27, 2014Assignee: BTG International Ltd.Inventors: David Dakin Iorwerth Wright, Anthony David Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey D. Moggridge, Hugh Van Liew
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Publication number: 20130059923Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: ApplicationFiled: November 2, 2012Publication date: March 7, 2013Applicant: BTG INTERNATIONAL LTD.Inventors: David Dakin Iorwerth Wright, Anthony David Harman, Nikki Robinson, Garry Hodges, SR., Adil Kadar, Geoffrey D. Moggridge, Hugh Van Liew
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Patent number: 8323677Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurized canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimizing the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: GrantFiled: April 23, 2010Date of Patent: December 4, 2012Assignee: BTG International Ltd.Inventors: David Dakin Iorwerth Wright, Anthony David Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey D. Moggridge, Hugh Van Liew
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Patent number: 8048439Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurized canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimizing the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: GrantFiled: May 13, 2005Date of Patent: November 1, 2011Assignee: BTG International Ltd.Inventors: David Dakin Iorwerth Wright, Anthony David Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey D. Moggridge, Hugh Van Liew, William John Jenkins
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Publication number: 20100203171Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: ApplicationFiled: April 23, 2010Publication date: August 12, 2010Applicant: BTG International Ltd.,Inventors: David Dakin Iorwerth WRIGHT, Anthony David Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey D. Moggridge, Hugh Van Liew
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Patent number: 7763269Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: GrantFiled: November 17, 2004Date of Patent: July 27, 2010Assignee: BTG International Ltd.Inventors: David Dakin Iorwerth Wright, Anthony David Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey D. Moggridge, Hugh Van Liew
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Patent number: 7731986Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: GrantFiled: November 17, 2004Date of Patent: June 8, 2010Assignee: BTG International Ltd.Inventors: David Dakin Iorwerth Wright, Anthony David Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey D. Moggridge, Hugh Van Liew
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Publication number: 20080274060Abstract: A foam is described for injection treatment of varicose veins. The foam comprises a sclerosant liquid, e.g. polidocanol solution, and a gas. The gas comprises xenon, optionally together with at least one other physiologically acceptable gas which is readily absorbed in the body or blood of a patient. The gas comprises only a minimal amount of gaseous nitrogen, between 0.0001% and 0.8%.Type: ApplicationFiled: May 12, 2006Publication date: November 6, 2008Inventors: David Dakin Iorwerth Wright, Anthony David Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Hugh Van Liew, Geoffrey D. Moggridge, William John Jenkins
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Publication number: 20070104651Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: ApplicationFiled: November 17, 2004Publication date: May 10, 2007Inventors: David Wright, Anthony Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey Moggridge, Hugh Van Liew
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Publication number: 20070003488Abstract: A therapeutic foam for the treatment of, inter alia, varicose veins comprises a sclerosing solution foamed with a physiological gas such as carbon dioxide, oxygen or a mixture thereof. The foam has a nitrogen content of less than 0.8%. It may be generated using a pressurised canister system incorporating a fine mesh of micron dimensions through which the gas and sclerosing liquid are passed to make the foam. Alternatively, the foam may be generated by passing gas and solution between two syringes through a fine mesh. Techniques are described for minimising the amount of nitrogen in a canister or syringe based product. A technique for generating and delivering foam simultaneously using a syringe based device is also disclosed.Type: ApplicationFiled: November 17, 2004Publication date: January 4, 2007Inventors: David Wright, Anthony Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey Moggridge, Hugh Van Liew
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Publication number: 20060280690Abstract: Present application discloses a device for generating and dispensing a foam for therapeutic use comprising a) a housing, b) a first chamber with gas at a substantially atmospheric pressure, a second chamber with at least one sclerosant agent c) an outlet for dispensing gas and the solution in the form of a foam d) the flow path for mixing the gas and the solution e) a foaming unit.Type: ApplicationFiled: November 17, 2004Publication date: December 14, 2006Inventors: David Wright, Anthony Harman, Nikki Robinson, Garry Hodges, Adil Kadar, Geoffrey Moggridge, Hugh Van Liew