Patents by Inventor David N. Heard
David N. Heard 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: 20180206906Abstract: A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members is configured to conduct energy between the jaw members and through tissue grasped therebetween to treat tissue. An insulative tubular member is movable relative to the end effector assembly between a retracted position, wherein the insulative tubular member is positioned proximally of the end effector assembly, and an extended position, wherein the insulative tubular member is disposed about the end effector assembly. A monopolar member is configured to apply energy to tissue to treat tissue when the insulative tubular member is disposed in the extended position.Type: ApplicationFiled: March 19, 2018Publication date: July 26, 2018Inventors: TONY MOUA, DAVID N. HEARD, JONATHAN A. COE, JOHN J. KAPPUS, PETER M. MUELLER, RAYMOND A. SIRIANNE, RYAN C. ARTALE
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Patent number: 9987076Abstract: A surgical instrument includes a housing, an inner shaft coupled to and extending distally from the housing, an end effector assembly disposed at a distal end of the inner shaft, an outer sheath that is fixed to the housing, extends distally from the housing, and is disposed about the inner shaft, and an insulative sleeve. The insulative sleeve is positioned between the inner shaft and the outer sheath. The insulative sleeve is movable relative to the inner shaft and the outer sheath between a storage position, wherein the insulative sleeve is positioned proximally of the end effector assembly, and a deployed position, wherein the insulative sleeve substantially surrounds the end effector assembly.Type: GrantFiled: July 17, 2015Date of Patent: June 5, 2018Assignee: COVIDIEN LPInventors: John J. Kappus, David N. Heard, David M. Garrison, Purvish Soni
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Publication number: 20180132921Abstract: A desiccation device for operation on a target tissue includes a handle, a shaft extending distally from the handle, and a head. The shaft defines a lumen therethrough, and the head has a loop configuration supported on a distal end of the shaft. The head is hollow and defines a lumen therethrough. The lumen of the head is in fluid communication with the lumen of the shaft. At least a portion of the head is electrically connected to a source of electrosurgical energy. A fluid is circulatable through the lumens of the shaft and the head.Type: ApplicationFiled: January 11, 2018Publication date: May 17, 2018Inventors: JOE D. SARTOR, DAVID N. HEARD
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Patent number: 9918784Abstract: A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members is configured to conduct energy between the jaw members and through tissue grasped therebetween to treat tissue. An insulative tubular member is movable relative to the end effector assembly between a retracted position, wherein the insulative tubular member is positioned proximally of the end effector assembly, and an extended position, wherein the insulative tubular member is disposed about the end effector assembly. A monopolar member is configured to apply energy to tissue to treat tissue when the insulative tubular member is disposed in the extended position.Type: GrantFiled: May 10, 2017Date of Patent: March 20, 2018Assignee: COVIDIEN LPInventors: Tony Moua, David N. Heard, Jonathan A. Coe, John J. Kappus, Peter M. Mueller, Raymond A. Sirianne, Ryan C. Artale
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Publication number: 20180049763Abstract: A surgical instrument includes a housing, a handle, an elongated shaft, an end effector assembly, a drive assembly, a support, a roller, and an extension depending from the handle. The end effector assembly includes a first jaw member and a second jaw member. At least one of the jaw members is movable with respect to the other jaw member. The drive assembly includes a drive bar extending at least partially through the elongated shaft such that longitudinal translation of the drive bar causes movement of the jaw members. The extension includes a proximal surface and a channel defined therein. The proximal surface is configured to contact a portion of the drive assembly such that movement of the handle with respect to the housing causes longitudinal translation of the drive bar. The channel is positioned for mechanical engagement by the roller.Type: ApplicationFiled: August 1, 2017Publication date: February 22, 2018Inventors: JOHN J. KAPPUS, DAVID N. HEARD
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Publication number: 20180049752Abstract: A surgical instrument includes a housing, an elongated shaft extending distally from the housing, an end effector assembly, and a trigger assembly. The trigger assembly is disposed in mechanical cooperation with the housing and is configured to longitudinally translate a drive member. The trigger assembly includes a trigger, a gear assembly, a spool, a slider, and a flexible drive member. The trigger is disposed in mechanical cooperation with the gear assembly. The flexible drive member is configured to engage the gear assembly, the spool, and the slider. Movement of the trigger with respect to the housing results in movement of the flexible drive member with respect to the housing and longitudinal movement of the slider with respect to the housing.Type: ApplicationFiled: August 9, 2017Publication date: February 22, 2018Inventors: JOHN J. KAPPUS, DAVID N. HEARD, JOE D. SARTOR
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Patent number: 9877769Abstract: A desiccation device for operation on a target tissue includes a handle, a shaft extending distally from the handle, and a head. The shaft defines a lumen therethrough, and the head has a loop configuration supported on a distal end of the shaft. The head is hollow and defines a lumen therethrough. The lumen is in fluid communication with the lumen of the shaft. At least a portion of the head is electrically connected to a source of electrosurgical energy. A fluid is circulatable through the lumen of the shaft and the head.Type: GrantFiled: December 6, 2013Date of Patent: January 30, 2018Assignee: COVIDIEN LPInventors: Joe D. Sartor, David N. Heard
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Publication number: 20170281215Abstract: A surgical system includes an ultrasonic surgical instrument and a cooling module. The instrument includes a waveguide defining a blade and having a lumen, an inflow conduit disposed in communication with the lumen and configured to supply fluid to the lumen, and a return conduit disposed in communication with the lumen and configured to receive fluid from the lumen. The cooling module includes a pump assembly operably coupled to the inflow and return conduits and configured to pump fluid through the inflow conduit, into the lumen, and back through the return conduit for cooling the blade. The cooling module also includes at least one sensor configured to sense a property of the fluid pumped into the inflow conduit and/or a property of the fluid returned from the return conduit, and a controller configured to control the pump assembly according to the sensed property(s).Type: ApplicationFiled: March 18, 2017Publication date: October 5, 2017Inventors: ROBERT B. STODDARD, ERIC R. LARSON, SCOTT E.M. FRUSHOUR, DAVID N. HEARD
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Publication number: 20170281216Abstract: An ultrasonic surgical instrument includes a waveguide defining a blade at a distal end thereof and a lumen extending through a portion of the blade. The blade is configured to receive ultrasonic energy for treating tissue. The instrument further includes first and second conduits each defining a proximal end and a distal end. The second conduit is coaxially disposed about the first conduit. The distal ends of the first and second conduits extend into the lumen. The distal end of the first conduit extends further distally into the lumen than the distal end of the second conduit.Type: ApplicationFiled: March 18, 2017Publication date: October 5, 2017Inventors: ROBERT B. STODDARD, ERIC R. LARSON, SCOTT E.M. FRUSHOUR, DAVID N. HEARD
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Publication number: 20170252055Abstract: Surgical instruments and surgical systems including the surgical instrument and a morcellator. The surgical instrument includes a tool assembly having an articulating joint and a screw positioned at a distal end of the articulating joint. The articulating joint is configured to articulate a distal portion of the tool assembly at an angle in relation to the longitudinal axis of the surgical instrument. The screw is configured to engage tissue, for example, a myoma in the uterine wall of a patient, and is configured to pitch and roll the tissue to expose cutting planes. The morcellator is configured to engage the tissue to morcellate the tissue and remove the tissue from a patient.Type: ApplicationFiled: May 22, 2017Publication date: September 7, 2017Inventors: JOE D. SARTOR, DAVID N. HEARD
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Publication number: 20170238992Abstract: A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members is configured to conduct energy between the jaw members and through tissue grasped therebetween to treat tissue. An insulative tubular member is movable relative to the end effector assembly between a retracted position, wherein the insulative tubular member is positioned proximally of the end effector assembly, and an extended position, wherein the insulative tubular member is disposed about the end effector assembly. A monopolar member is configured to apply energy to tissue to treat tissue when the insulative tubular member is disposed in the extended position.Type: ApplicationFiled: May 10, 2017Publication date: August 24, 2017Inventors: TONY MOUA, DAVID N. HEARD, JONATHAN A. COE, JOHN J. KAPPUS, PETER M. MUELLER, RAYMOND A. SIRIANNE, RYAN C. ARTALE
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Patent number: 9668763Abstract: Surgical instruments and surgical systems including the surgical instrument and a morcellator. The surgical instrument includes a tool assembly having an articulating joint and a screw positioned at a distal end of the articulating joint. The articulating joint is configured to articulate a distal portion of the tool assembly at an angle in relation to the longitudinal axis of the surgical instrument. The screw is configured to engage tissue, for example, a myoma in the uterine wall of a patient, and is configured to pitch and roll the tissue to expose cutting planes. The morcellator is configured to engage the tissue to morcellate the tissue and remove the tissue from a patient.Type: GrantFiled: June 12, 2014Date of Patent: June 6, 2017Assignee: COVIDIEN LPInventors: Joe D. Sartor, David N. Heard
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Publication number: 20170151013Abstract: A surgical instrument including housing having a shaft extending distally therefrom, an outer sleeve disposed about the shaft and selectively translatable relative to the shaft, a first drive shaft disposed within the shaft and translatable relative to the shaft independently of the outer sleeve, a second drive shaft disposed within the first drive shaft and coupled to the outer sleeve to translate in conjunction with the outer sleeve, and a rotatable nose wheel. The rotatable nose wheel is mounted about a distal end of the housing and is rotatably coupled to each of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft such that rotation of the rotatable nose wheel effects corresponding rotation of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft in conjunction with one another and relative to the housing.Type: ApplicationFiled: February 14, 2017Publication date: June 1, 2017Inventors: JOHN J. KAPPUS, DAVID N. HEARD
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Patent number: 9649152Abstract: A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members is configured to conduct energy between the jaw members and through tissue grasped therebetween to treat tissue. An insulative tubular member is movable relative to the end effector assembly between a retracted position, wherein the insulative tubular member is positioned proximally of the end effector assembly, and an extended position, wherein the insulative tubular member is disposed about the end effector assembly. A monopolar member is configured to apply energy to tissue to treat tissue when the insulative tubular member is disposed in the extended position.Type: GrantFiled: March 28, 2016Date of Patent: May 16, 2017Assignee: COVIDIEN LPInventors: Tony Moua, David N. Heard, Jonathan A. Coe, John J. Kappus, Peter M. Mueller, Raymond A. Sirianne, Ryan C. Artale
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Publication number: 20170119417Abstract: A surgical instrument includes a housing, a handle, an elongated shaft, an end effector assembly, a drive assembly, and an extension depending from the handle. The extension includes a proximal surface having a first proximal cam portion defining a first angle with respect to the longitudinal axis and a second proximal cam portion defining a second angle with respect to the longitudinal axis. Initial actuation of the handle from a non-actuated position causes the first proximal cam portion to contact the first portion of the drive assembly causing a first movement of the at least one jaw member, and a subsequent actuation of the handle causes the second proximal cam portion to contact the first portion of the drive assembly causing a second movement of the at least one jaw member.Type: ApplicationFiled: August 5, 2016Publication date: May 4, 2017Inventors: JOHN J. KAPPUS, DAVID N. HEARD
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Patent number: 9603624Abstract: A method for dissecting a myoma from a uterine wall includes inserting a myomectomy screw retractor into a surgical site, articulating a tool assembly positioned at a distal end of the myomectomy screw retractor such that a screw of the tool assembly is positioned adjacent to the myoma orthogonal to the uterine wall, rotating the screw of the tool assembly into the myoma until the screw is substantially engaged with the myoma, manipulating the myoma by pitching, rotating, and/or providing traction to the myoma to expose cutting planes, and dissecting the myoma from the uterine wall by cutting along the exposed cutting planes.Type: GrantFiled: June 12, 2014Date of Patent: March 28, 2017Assignee: COVIDIEN LPInventors: Joe D. Sartor, David N. Heard
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Patent number: 9579117Abstract: A surgical instrument including housing having a shaft extending distally therefrom, an outer sleeve disposed about the shaft and selectively translatable relative to the shaft, a first drive shaft disposed within the shaft and translatable relative to the shaft independently of the outer sleeve, a second drive shaft disposed within the first drive shaft and coupled to the outer sleeve to translate in conjunction with the outer sleeve, and a rotatable nose wheel. The rotatable nose wheel is mounted about a distal end of the housing and is rotatably coupled to each of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft such that rotation of the rotatable nose wheel effects corresponding rotation of the outer sleeve, the shaft, the first drive shaft, and the second drive shaft in conjunction with one another and relative to the housing.Type: GrantFiled: May 13, 2014Date of Patent: February 28, 2017Assignee: COVIDIEN LPInventors: John J. Kappus, David N. Heard
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Patent number: 9468493Abstract: Three types of internal cooling mechanisms for cooling one or more electrodes of a surface tissue desiccation device are described. Each cooling mechanism is closed-ended thereby preventing the cooling fluid from being dispensed from an electrosurgical handset of the device and onto the surgical site. The cooling fluid re-circulates in a conduit or lumen assembly between a fluid source, such as a fluid reservoir, and the electrode(s) at a distal end of the electrosurgical handset. A method is also provided for performing an electrosurgical procedure using the surface tissue desiccation device. The method includes activating an energy source; causing one or more electrodes to heat tissue; and internally cooling at least a portion of the at least one electrode(s) via an internal cooling mechanism. The internal cooling mechanism keeps the electrode(s) in a cooled state during the electrosurgical procedure, such as surface tissue desiccation.Type: GrantFiled: January 4, 2012Date of Patent: October 18, 2016Assignee: COVIDIEN LPInventors: David N. Heard, Joe D. Sartor
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Publication number: 20160296272Abstract: A method for controlling delivery of energy to seal and divide tissue includes applying energy to tissue in a first phase through an electrosurgical forceps having at least one electrically energizable electrode. The method also includes detecting a predetermined condition based on the application of energy to tissue during the first phase. The method also includes applying energy to tissue during a second phase upon detection of the predetermined condition and providing tension to the tissue during the second phase to separate the tissue.Type: ApplicationFiled: June 22, 2016Publication date: October 13, 2016Inventor: DAVID N. HEARD
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Publication number: 20160206368Abstract: A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members is configured to conduct energy between the jaw members and through tissue grasped therebetween to treat tissue. An insulative tubular member is movable relative to the end effector assembly between a retracted position, wherein the insulative tubular member is positioned proximally of the end effector assembly, and an extended position, wherein the insulative tubular member is disposed about the end effector assembly. A monopolar member is configured to apply energy to tissue to treat tissue when the insulative tubular member is disposed in the extended position.Type: ApplicationFiled: March 28, 2016Publication date: July 21, 2016Inventors: TONY MOUA, DAVID N. HEARD, JONATHAN A. COE, JOHN J. KAPPUS, PETER M. MUELLER, RAYMOND A. SIRIANNE, RYAN C. ARTALE