Patents by Inventor Douglas M. Macarthur
Douglas M. Macarthur 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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Publication number: 20210298744Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: ApplicationFiled: June 10, 2021Publication date: September 30, 2021Inventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Patent number: 11129660Abstract: The disclosed technology is directed to a RF power generator and feedback control system used to regulate the electrical power delivered to a cutting filament (i.e., a cutting electrode) of an electrosurgical instrument. The electrosurgical instrument uses the delivered energy to form a cutting arc for ablating a tissue mass to access a target tissue therein. The instrument forms a basket-like receptacle around the target tissue to excise the target tissue from the ablated tissue mass. As the instrument forms the receptacle, the length of exposed filament ablating the tissue changes. To this end, the RF power generator described herein is configured to vary the total power delivered during the deployment of the instrument based on a measurement of output power derived from a differential phase angle between a current sense output and a voltage sense output, in some embodiments, to maintain a uniform power density along the length of exposed filament.Type: GrantFiled: August 12, 2016Date of Patent: September 28, 2021Assignee: Covidien AGInventors: Douglas M. Macarthur, John F. Vacha, Albert Solbjor, Christopher Tocci, Christian A. Moses
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Patent number: 11033262Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: GrantFiled: November 30, 2017Date of Patent: June 15, 2021Assignee: Intuitive Surgical Operations, Inc.Inventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Patent number: 10383622Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: GrantFiled: December 29, 2017Date of Patent: August 20, 2019Assignee: ENDOEVOLUTION, LLCInventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Patent number: 10363079Abstract: An electrosurgical apparatus and method for cutting and resecting a tissue volume is described. The apparatus includes one or more electrosurgical filaments and capture components deployable by forward extension at or near a forward tip of an elongated shaft of the apparatus to form an elliptical path that defines, with the other capture components, a spheroidal receptacle configured to surround a tissue volume for resection. The elliptical path is formable by a first extension followed by a second extension, said first extension having a first axial component and a radial expansion component, and said second extension having a second axial component and a radial contraction component, where at least one of the capture components is of varying stiffness.Type: GrantFiled: August 12, 2016Date of Patent: July 30, 2019Assignee: Medtronic Inc.Inventors: John F. Vacha, Douglas M. Macarthur, Albert Solbjor
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Patent number: 10307155Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: GrantFiled: November 30, 2017Date of Patent: June 4, 2019Assignee: ENDOEVOLUTION, LLCInventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Publication number: 20180153541Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: ApplicationFiled: December 29, 2017Publication date: June 7, 2018Inventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Patent number: 9986997Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: GrantFiled: July 21, 2017Date of Patent: June 5, 2018Assignee: EndoEvolution, LLCInventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Patent number: 9962156Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a drive mechanism at a distal end of the drive arm, wherein the drive mechanism is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the drive mechanism, thereby rotating the suturing needle about the rotational axis.Type: GrantFiled: September 2, 2016Date of Patent: May 8, 2018Assignee: EndoEvolution, LLCInventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Sauliner, Brian R. Edwards, Gerald I. Brecher
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Publication number: 20180116655Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: ApplicationFiled: November 30, 2017Publication date: May 3, 2018Inventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Publication number: 20180085115Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: ApplicationFiled: November 30, 2017Publication date: March 29, 2018Inventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Publication number: 20180085114Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: ApplicationFiled: November 30, 2017Publication date: March 29, 2018Inventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher
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Publication number: 20170333032Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a needle driver at a distal end of the drive arm, wherein the needle driver is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the needle driver, thereby rotating the suturing needle about the rotational axis.Type: ApplicationFiled: July 21, 2017Publication date: November 23, 2017Inventors: John C. Meade, Douglas M. MacArthur, Stephen M. Blinn, Christopher Sauliner, Brian R. Edwards, Gerald I. Brecher
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Publication number: 20170156780Abstract: The disclosed technology is directed to a RF power generator and feedback control system used to regulate the electrical power delivered to a cutting filament (i.e., a cutting electrode) of an electrosurgical instrument. The electrosurgical instrument uses the delivered energy to form a cutting arc for ablating a tissue mass to access a target tissue therein. The instrument forms a basket-like receptacle around the target tissue to excise the target tissue from the ablated tissue mass. As the instrument forms the receptacle, the length of exposed filament ablating the tissue changes. To this end, the RF power generator described herein is configured to vary the total power delivered during the deployment of the instrument based on a measurement of output power derived from a differential phase angle between a current sense output and a voltage sense output, in some embodiments, to maintain a uniform power density along the length of exposed filament.Type: ApplicationFiled: August 12, 2016Publication date: June 8, 2017Inventors: Douglas M. Macarthur, John F. Vacha, Albert Solbjor, Christopher Tocci, Christian A. Moses
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Publication number: 20170095286Abstract: An electrosurgical apparatus and method for cutting and resecting a tissue volume is described. The apparatus includes one or more electrosurgical filaments and capture components deployable by forward extension at or near a forward tip of an elongated shaft of the apparatus to form an elliptical path that defines, with the other capture components, a spheroidal receptacle configured to surround a tissue volume for resection. The elliptical path is formable by a first extension followed by a second extension, said first extension having a first axial component and a radial expansion component, and said second extension having a second axial component and a radial contraction component, where at least one of the capture components is of varying stiffness.Type: ApplicationFiled: August 12, 2016Publication date: April 6, 2017Inventors: John F. Vacha, Douglas M. Macarthur, Albert Solbjor
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Publication number: 20170049442Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a drive mechanism at a distal end of the drive arm, wherein the drive mechanism is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the drive mechanism, thereby rotating the suturing needle about the rotational axis.Type: ApplicationFiled: September 2, 2016Publication date: February 23, 2017Inventors: John C. MEADE, Douglas M. MACARTHUR, Stephen M. BLINN, Christopher SAULINER, Brian R. EDWARDS, Gerald I. BRECHER
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Publication number: 20130261643Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a drive mechanism at a distal end of the drive arm, wherein the drive mechanism is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the drive mechanism, thereby rotating the suturing needle about the rotational axis.Type: ApplicationFiled: May 23, 2013Publication date: October 3, 2013Applicant: ENDOEVOLUTION, LLCInventors: John C. Meade, Douglas M. Macarthur, Stephen M. Blinn, Christopher Sauliner, Brian R. Edwards
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Patent number: 8469973Abstract: A tissue closure device includes a pusher assembly having a drive arm extending from a drive shaft and a drive mechanism at a distal end of the drive arm, wherein the drive mechanism is capable of releasably engaging and rotating a suturing needle having a pointed end and a blunt end about a rotational axis and a cartridge having a protective housing and the suturing needle, the cartridge extending from a distal end of a cartridge holder assembly and releasably attached to the cartridge holder assembly. A pointed end of the suturing needle may be positioned within the protective housing before and after a complete rotation of the suturing needle about the rotational axis. A removable electronic module may be provided controlled by an actuator that mechanically engages the drive shaft to rotate the drive shaft and the drive mechanism, thereby rotating the suturing needle about the rotational axis.Type: GrantFiled: July 17, 2008Date of Patent: June 25, 2013Assignee: EndoEvolution, LLCInventors: John C. Meade, Douglas M. Macarthur, Stephen M. Blinn, Christopher Saulnier, Brian R. Edwards, Gerald I. Brecher