Patents by Inventor Alistair I. Fleming
Alistair I. Fleming 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: 9615876Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube (8) having a distal end portion, and a bipolar electrosurgical electrode assembly (13) located at the distal end of the tube. The electrosurgical electrode assembly (13) comprises first and second electrodes (14, 16) separated by an insulation member (15). When an electrosurgical cutting voltage is applied to the electrode assembly (13), and relative movement is initiated between the tube (8) and the tissue, a slug of resected tissue is formed within the tube such that it can be removed from the body cavity of the patient. The bipolar electrosurgical assembly (13) has a first circumferential region (A) and a second circumferential region (B), the first circumferential region (A) being longer than the second circumferential region (B), the bipolar electrosurgical assembly being adapted to cut tissue preferentially in the first circumferential region (A) as compared with the second circumferential region (B).Type: GrantFiled: October 30, 2014Date of Patent: April 11, 2017Assignee: GYRUS MEDICAL LIMITEDInventors: Andrew E. Jenkins, Hollie E. Johnston, Alistair I. Fleming
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Publication number: 20150057660Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube (8) having a distal end portion, and a bipolar electrosurgical electrode assembly (13) located at the distal end of the tube. The electrosurgical electrode assembly (13) comprises first and second electrodes (14, 16) separated by an insulation member (15). When an electrosurgical cutting voltage is applied to the electrode assembly (13), and relative movement is initiated between the tube (8) and the tissue, a slug of resected tissue is formed within the tube such that it can be removed from the body cavity of the patient. The bipolar electrosurgical assembly (13) has a first circumferential region (A) and a second circumferential region (B), the first circumferential region (A) being longer than the second circumferential region (B), the bipolar electrosurgical assembly being adapted to cut tissue preferentially in the first circumferential region (A) as compared with the second circumferential region (B).Type: ApplicationFiled: October 30, 2014Publication date: February 26, 2015Inventors: Andrew E. JENKINS, Hollie E. JOHNSTON, Alistair I. FLEMING
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Patent number: 8900230Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube (8) having a distal end portion, and a bipolar electrosurgical electrode assembly (13) located at the distal end of the tube. The electrosurgical electrode assembly (13) comprises first and second electrodes (14, 16) separated by an insulation member (15). When an electrosurgical cutting voltage is applied to the electrode assembly (13), and relative movement is initiated between the tube (8) and the tissue, a slug of resected tissue is formed within the tube such that it can be removed from the body cavity of the patient. The bipolar electrosurgical assembly (13) has a first circumferential region (A) and a second circumferential region (B), the first circumferential region (A) being longer than the second circumferential region (B), the bipolar electrosurgical assembly being adapted to cut tissue preferentially in the first circumferential region (A) as compared with the second circumferential region (B).Type: GrantFiled: April 15, 2010Date of Patent: December 2, 2014Assignee: Gyrus Medical LimitedInventors: Andrew E. Jenkins, Hollie E. Johnston, Alistair I. Fleming
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Patent number: 8343148Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube having a distal end portion, and a bipolar electrosurgical electrode assembly located at the distal end of the tube. The electrosurgical electrode assembly comprises first and second electrodes separated by an insulation member. When an electrosurgical cutting voltage is applied to the electrode assembly, and relative movement is initiated between the tube and the tissue, a core of severed tissue is formed within the tube such that it can be removed from the body cavity of the patient. The tube comprises a twin-walled construction with an inner wall, an outer wall and an air gap therebetween. This twin-walled construction reduces the heat that is able to travel proximally along the tube.Type: GrantFiled: April 27, 2009Date of Patent: January 1, 2013Assignee: Gyrus Medical LimitedInventors: Alistair I. Fleming, Julian M. Ebbutt, Andrew E. Jenkins, Hollie Johnston, Rhodri G. James
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Publication number: 20110184409Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube (8) having a distal end portion, and a bipolar electrosurgical electrode assembly (13) located at the distal end of the tube. The electrosurgical electrode assembly (13) comprises first and second electrodes (14, 16) separated by an insulation member (15). When an electrosurgical cutting voltage is applied to the electrode assembly (13), and relative movement is initiated between the tube (8) and the tissue, a slug of resected tissue is formed within the tube such that it can be removed from the body cavity of the patient. The bipolar electrosurgical assembly (13) has a first circumferential region (A) and a second circumferential region (B), the first circumferential region (A) being longer than the second circumferential region (B), the bipolar electrosurgical assembly being adapted to cut tissue preferentially in the first circumferential region (A) as compared with the second circumferential region (B).Type: ApplicationFiled: April 15, 2010Publication date: July 28, 2011Inventors: Andrew E. JENKINS, Hollie E. Johnston, Alistair I. Fleming
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Patent number: 7901401Abstract: An electrosurgical system comprises a generator and an instrument including a first electrode, a second electrode, and an insulating spacer separating the first and second electrodes. The generator repeatedly measures a characteristic of the radio frequency output such as the impedance between the first and second electrodes. The generator analyses the impedance measurements, and interrupts the radio frequency signal when the rate of change of the impedance is such as to indicate the onset of a “flare-out”. In this way, the power is reduced before the flare-out leads to permanent damage or failure of the instrument.Type: GrantFiled: April 30, 2007Date of Patent: March 8, 2011Assignee: Gyrus Medical LimitedInventors: Alistair I Fleming, Huw L Jones
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Publication number: 20090292281Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube having a distal end portion, and a bipolar electrosurgical electrode assembly located at the distal end of the tube. The electrosurgical electrode assembly comprises first and second electrodes separated by an insulation member. When an electrosurgical cutting voltage is applied to the electrode assembly, and relative movement is initiated between the tube and the tissue, a core of severed tissue is formed within the tube such that it can be removed from the body cavity of the patient. The tube comprises a twin-walled construction with an inner wall, an outer wall and an air gap therebetween. This twin-walled construction reduces the heat that is able to travel proximally along the tube.Type: ApplicationFiled: April 27, 2009Publication date: November 26, 2009Inventors: Alistair I. Fleming, Julian M. Ebbutt, Andrew E. Jenkins, Hollie Johnston, Rhodri G. James
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Publication number: 20080065129Abstract: A tissue morcellating device (1) is provided for morcellating tissue within a body cavity of a patient. The morcellating device (1) comprisies a hollow tube (3) having a distal end portion, and tissue cutting means (5) located at the distal end of the tube, such that, when relative movement is initiated between the tube and the tissue, a core of severed tissue is formed within the tube for removal from the body cavity of the patient through the hollow tube. The hollow tube (3) is provided with a stop mechanism (7) which is longitudinally adjustable with respect to the hollow tube (3), the stop mechanism being provided with a shoulder (8) for limiting the longitudinal insertion of the tube into the patient's body.Type: ApplicationFiled: September 20, 2006Publication date: March 13, 2008Applicant: Gyrus Medical LimitedInventors: Kester J. Batchelor, Alistair I. Fleming, Rhodri G. James, Thomas R. K. Edwards
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Patent number: 7220260Abstract: An electrosurgical system comprises a generator and an instrument including a first electrode, a second electrode, and an insulating spacer separating the first and second electrodes. The generator repeatedly measures a characteristic of the radio frequency output such as the impedance between the first and second electrodes. The generator analyses the impedance measurements, and interrupts the radio frequency signal when the rate of change of the impedance is such as to indicate the onset of a “flare-out”. In this way, the power is reduced before the flare-out leads to permanent damage or failure of the instrument.Type: GrantFiled: June 19, 2003Date of Patent: May 22, 2007Assignee: Gyrus Medical LimitedInventors: Alistair I. Fleming, Huw L Jones
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Publication number: 20040002745Abstract: An electrosurgical system comprises a generator and an instrument including a first electrode, a second electrode, and an insulating spacer separating the first and second electrodes. The generator repeatedly measures a characteristic of the radio frequency output such as the impedance between the first and second electrodes. The generator analyses the impedance measurements, and interrupts the radio frequency signal when the rate of change of the impedance is such as to indicate the onset of a “flare-out”. In this way, the power is reduced before the flare-out leads to permanent damage or failure of the instrument.Type: ApplicationFiled: June 19, 2003Publication date: January 1, 2004Applicant: GYRUS MEDICAL LIMITED.Inventors: Alistair I. Fleming, Huw L. Jones