Patents by Inventor Mani Prakash
Mani Prakash 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: 8663213Abstract: High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.Type: GrantFiled: May 24, 2012Date of Patent: March 4, 2014Assignee: Covidien LPInventors: Roman Turovskiy, Ted Su, Mani Prakash, Steven Kim
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Publication number: 20120232619Abstract: High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.Type: ApplicationFiled: May 24, 2012Publication date: September 13, 2012Applicant: VIVANT MEDICAL, INC.Inventors: Roman Turovskiy, Ted Su, Mani Prakash, Steven Kim
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Patent number: 8192423Abstract: High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.Type: GrantFiled: August 22, 2011Date of Patent: June 5, 2012Assignee: Vivant Medical, Inc.Inventors: Roman Turovskiy, Ted Su, Mani Prakash, Steven Kim
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Publication number: 20110306961Abstract: High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.Type: ApplicationFiled: August 22, 2011Publication date: December 15, 2011Applicant: Vivant Medical, Inc.Inventors: Roman Turovskiy, Ted Su, Mani Prakash, Steven Kim
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Patent number: 8012148Abstract: High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.Type: GrantFiled: August 20, 2010Date of Patent: September 6, 2011Assignee: Vivant Medical, Inc.Inventors: Roman Turovskiy, Ted Su, Mani Prakash, Steven Kim
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Patent number: 7875024Abstract: Devices and methods for cooling microwave antennas are disclosed herein. The cooling systems can be used with various types of microwave antennas. One variation generally comprises a handle portion with an elongate outer jacket extending from the handle portion. A microwave antenna is positioned within the handle and outer jacket such that cooling fluid pumped into the handle comes into contact directly along a portion of the length, or a majority of the length, or the entire length of the antenna to allow for direct convective cooling. Other variations include cooling sheaths which form defined cooling channels around a portion of the antenna. Yet another variation includes passively-cooled systems which utilize expandable balloons to urge tissue away from the surface of the microwave antenna as well as cooling sheaths which are cooled through endothermic chemical reactions. Furthermore, the microwave antennas themselves can have cooling lumens integrated directly therethrough.Type: GrantFiled: February 8, 2005Date of Patent: January 25, 2011Assignee: Vivant Medical, Inc.Inventors: Roman Turovskiy, Steven Kim, Mani Prakash, Francesca Rossetto
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Publication number: 20100318078Abstract: High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.Type: ApplicationFiled: August 20, 2010Publication date: December 16, 2010Inventors: Roman Turovskiy, Ted Su, Mani Prakash, Steven Kim
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Patent number: 7799019Abstract: High-strength microwave antenna assemblies and methods of use are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. Proximal and distal radiating portions of the antenna assembly are separated by a junction member. A reinforcing member is disposed within the junction member to increase structural rigidity.Type: GrantFiled: May 10, 2005Date of Patent: September 21, 2010Assignee: Vivant Medical, Inc.Inventors: Roman Turovskiy, Ted Su, Mani Prakash, Steven Kim
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Publication number: 20100082082Abstract: Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.Type: ApplicationFiled: April 7, 2009Publication date: April 1, 2010Inventors: Mani Prakash, Francesca Rossetto, Anthony Lee, Steven Kim, Ted Su, Jonathan Glassman
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Patent number: 7594313Abstract: A method of manufacturing a microwave antenna assembly includes the step of providing a proximal portion having an inner conductor and an outer conductor. Each of the inner and outer conductors extend through the proximal portion and the inner conductor is disposed within the outer conductor. The method also includes the step of placing a junction member adjacent to a distal end of the proximal portion such that the inner conductor extends through a channel defined in the junction member. The method also includes the step of placing a proximal end of a distal portion adjacent to a distal end of the junction member such that the inner conductor extends within a channel defined within the distal portion. The method also includes the step of affixing the inner conductor to the distal portion such that the proximal portion and the distal portion apply a compressive force on the junction member.Type: GrantFiled: July 26, 2006Date of Patent: September 29, 2009Assignee: Vivant Medical, Inc.Inventors: Mani Prakash, Francesca Rossetto, Anthony Lee, Steven Kim, Ted Su, Jonathan Glassman
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Patent number: 7549989Abstract: Devices for electrosurgery by means of oxy-hydro combustion. Deleterious effects to tissue are minimized by means of control of acid-base shift reactions, which reactions can further be employed to control oxy-hydro combustion reactions. In one embodiment, radiofrequency energy in electrical connection with electrodes is employed to induce electrolysis in an aqueous salt environment, thereby producing oxygen and hydrogen, with the same energy source employed to initiate a combustion reaction.Type: GrantFiled: August 29, 2007Date of Patent: June 23, 2009Assignee: NuOrtho Surgical, Inc.Inventors: Roy E. Morgan, Wayne K. Augé, N. Mani Prakash
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Patent number: 7527623Abstract: Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.Type: GrantFiled: July 26, 2006Date of Patent: May 5, 2009Assignee: Vivant Medical, Inc.Inventors: Mani Prakash, Francesca Rossetto, Anthony Lee, Steven Kim, Ted Su, Jonathan Glassman
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Patent number: 7468042Abstract: This invention is an improved tissue-localizing device with an electrically energized locator element for fixedly yet removably marking a volume of tissue containing a suspect region for excision. The electrical energizing of the locator element facilitates the penetration of the locator element in to subject's tissue and minimizes resistance due to dense or calcified tissues. At least one locator element is deployed into tissue and assumes a predetermined curvilinear shape to define a tissue border containing a suspect tissue region along a path. Multiple locator elements may be deployed to further define the tissue volume along additional paths defining the tissue volume border that do not penetrate the volume. Delivery of electric current may be achieved through monopolar or bipolar electronic configuration depending on design needs. Various energy sources, e.g. radio frequency, microwave or ultrasound, may be implemented in this energized tissue-localizing device.Type: GrantFiled: April 27, 2004Date of Patent: December 23, 2008Assignee: Vivant Medical, Inc.Inventors: Roman Turovskiy, Ted Su, Steven Kim, Mani Prakash
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Patent number: 7354438Abstract: Devices for electrosurgery by means of oxy-hydro combustion. Deleterious effects to tissue are minimized by means of control of acid-base shift reactions, which reactions can further be employed to control oxy-hydro combustion reactions. In one embodiment, radiofrequency energy in electrical connection with electrodes is employed to induce electrolysis in an aqueous salt environment, thereby producing oxygen and hydrogen, with the same energy source employed to initiate a combustion reaction.Type: GrantFiled: June 7, 2005Date of Patent: April 8, 2008Assignee: MAP Technologies, LLCInventors: Roy E. Morgan, Wayne K. Auge, II, N. Mani Prakash
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Patent number: 7318824Abstract: Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.Type: GrantFiled: October 7, 2004Date of Patent: January 15, 2008Assignee: Vivant Medical, Inc.Inventors: Mani Prakash, Francesca Rossetto, Anthony Lee, Steven Kim, Ted Su, Jonathan Glassman
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Patent number: 7311703Abstract: Devices and methods for cooling microwave antennas are disclosed herein. The cooling systems can be used with various types of microwave antennas. One variation generally comprises a handle portion with an elongate outer jacket extending from the handle portion. A microwave antenna is positioned within the handle and outer jacket such that cooling fluid pumped into the handle comes into contact directly along a portion of the length, or a majority of the length, or the entire length of the antenna to allow for direct convective cooling. Other variations include cooling sheaths which form defined cooling channels around a portion of the antenna. Yet another variation includes passively-cooled systems which utilize expandable balloons to urge tissue away from the surface of the microwave antenna as well as cooling sheaths which are cooled through endothermic chemical reactions. Furthermore, the microwave antennas themselves can have cooling lumens integrated directly therethrough.Type: GrantFiled: July 18, 2003Date of Patent: December 25, 2007Assignee: Vivant Medical, Inc.Inventors: Roman Turovskiy, Steven Kim, Mani Prakash, Francesca Rossetto
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Patent number: 7306592Abstract: An bipolar electrosurgical tool (10) for cauterizing or ablating tissue. The tool has a nose cone (12) which serves as a handle. A conductive shaft (14) extends from the nose cone. A tip assembly (18) with an active electrode (20) is mounted to the shaft. A circuit board (78) is mounted in the nose cone. Conductive traces that forming contact pads (96, 102) are formed on the circuit board. A web (108) formed from a single piece of elastomeric material is seated over the opening in which the printed circuit board is mounted to seal the opening shut. Integrally formed with the web are buttons (116, 118) that are in registration over the contact pads. The buttons can be depressed downwardly towards the contact pads. When a button is so depressed, a conductive landing pad (120) integral with the button closes the connection between the traces that form the contact pad. Thus, the tool of this invention is provided with switches. The circuit board also has two conductive traces (92, 104a) that run in parallel.Type: GrantFiled: August 26, 2002Date of Patent: December 11, 2007Assignee: Stryker CorporationInventors: Roy Morgan, Heber Saravia, Jens Voges, Mani Prakash
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Publication number: 20070198006Abstract: A microwave antenna having a curved configuration is described herein. The antenna portion is formed into various shapes whereby the antenna substantially encloses, by a partial or complete loop or enclosure, at least a majority of the tissue to be irradiated. When microwave energy is delivered through the antenna, the curved configuration forms an ablation field or region defined by the curved antenna and any tissue enclosed within the ablation region becomes irradiated by the microwave energy. The microwave antenna is deployed through one of several methods, and multiple curved antennas can be used in conjunction with one another. Moreover, RF energy can also be used at the distal tip of the antenna to provide a cutting tip for the antenna during deployment in tissue.Type: ApplicationFiled: March 5, 2007Publication date: August 23, 2007Inventors: Mani Prakash, Francesca Rossetto, Steven Kim, Brian Shiu, Thomas Fogarty, Sascha Zarins
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Patent number: 7197363Abstract: A microwave antenna having a curved configuration is described herein. The antenna portion is formed into various shapes whereby the antenna substantially encloses, by a partial or complete loop or enclosure, at least a majority of the tissue to be irradiated. When microwave energy is delivered through the antenna, the curved configuration forms an ablation field or region defined by the curved antenna and any tissue enclosed within the ablation region becomes irradiated by the microwave energy. The microwave antenna is deployed through one of several methods, and multiple curved antennas can be used in conjunction with one another. Moreover, RF energy can also be used at the distal tip of the antenna to provide a cutting tip for the antenna during deployment in tissue.Type: GrantFiled: October 15, 2002Date of Patent: March 27, 2007Assignee: Vivant Medical, Inc.Inventors: Mani Prakash, Francesca Rossetto, Steven Kim, Brian Shiu, Thomas J. Fogarty, Sascha Zarins
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Publication number: 20060293650Abstract: Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.Type: ApplicationFiled: July 26, 2006Publication date: December 28, 2006Inventors: Mani Prakash, Francesca Rossetto, Anthony Lee, Steven Kim, Ted Su, Jonathan Glassman