Patents by Inventor Mani N. Prakash

Mani N. 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).

  • Patent number: 10405921
    Abstract: 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: Grant
    Filed: October 18, 2016
    Date of Patent: September 10, 2019
    Assignee: COVIDIEN LP
    Inventors: Roman Turovskiy, Steven Kim, Mani N. Prakash, Francesca Rossetto
  • Patent number: 10271903
    Abstract: A conduit assembly for transmitting energy between an electrosurgical energy generator and an energy delivering device comprises a first cable sub-assembly including a cable having a flexibility and an energy attenuation; a second cable sub-assembly including a cable having a flexibility and an energy attenuation; wherein the flexibility of the cable of the first cable sub-assembly is less than the flexibility of the cable of the second cable sub-assembly; and wherein the energy attenuation of the cable of the first cable sub-assembly is less than the energy attenuation of the cable of the second cable sub-assembly.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: April 30, 2019
    Assignee: Covidien LP
    Inventors: Francesca Rossetto, Mani N. Prakash, Brian Shiu
  • Patent number: 10271901
    Abstract: An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feedline, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section.
    Type: Grant
    Filed: February 9, 2016
    Date of Patent: April 30, 2019
    Assignee: COVIDIEN LP
    Inventors: Steven Kim, Kenlyn S. Bonn, Mani N. Prakash, Francesca Rossetto
  • Patent number: 10271902
    Abstract: An ablation device includes an antenna assembly having a radiating portion configured to deliver energy from a power source to tissue of a patient. The radiating portion has an outer conductor and an inner conductor extending therethrough. The inner conductor is disposed within the outer conductor and defines a longitudinal axis. One of the inner conductor and the outer conductor is movable relative to the other to cause at least a portion of the outer conductor to expand radially relative to the longitudinal axis.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: April 30, 2019
    Assignee: COVIDIEN LP
    Inventors: Anthony C. Lee, Kenlyn S. Bonn, Mani N. Prakash, Francesca Rossetto
  • Patent number: 10154880
    Abstract: 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: Grant
    Filed: January 5, 2017
    Date of Patent: December 18, 2018
    Assignee: Covidien LP
    Inventors: Mani N. Prakash, Francesca Rossetto, Anthony C. Lee, Steven Kim, Ted Su, Jonathan L. Glassman
  • Publication number: 20180344384
    Abstract: A method for identifying and treating tissue includes providing an electrosurgical treatment device including an electrode assembly. One or more electrical property values of target tissue are measured. The measured electrical property values of the target tissue are compared against electrical property values of known tissue types. A tissue type of the target tissue is identified. An energy delivery configuration of the electrosurgical treatment device is adjusted to the type of target tissue. The electrosurgical treatment device is activated to treat the target tissue.
    Type: Application
    Filed: July 26, 2018
    Publication date: December 6, 2018
    Inventors: MANI N. PRAKASH, TIMOTHY J. BAHNEY, DARREN ODOM
  • Publication number: 20180344402
    Abstract: An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feedline, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. The length adjustment member includes a first pivot element and a first tensioning element coupled to the first pivot element.
    Type: Application
    Filed: August 6, 2018
    Publication date: December 6, 2018
    Inventors: Steven Kim, Kenlyn S. Bonn, Mani N. Prakash, Francesca Rossetto
  • Patent number: 10143520
    Abstract: An antenna guide assembly including a guide body having a proximal end defining at least one proximal entry, a distal end defining at least one distal port, and at least one guide passage extending between the proximal and distal ends. The at least one guide passage is configured to receive at least a portion of an antenna therethrough via the at least one proximal entry such that a distal portion of the antenna extends through and distally from the at least one distal port for insertion into tissue. A locking assembly disposed at the distal end of the guide body is configured to receive the distal portion of the antenna therethrough. The locking assembly is configured to selectively engage the distal portion of the antenna to prevent translation of the antenna within the at least one guide passage.
    Type: Grant
    Filed: October 27, 2015
    Date of Patent: December 4, 2018
    Assignee: Covidien LP
    Inventors: Mani N. Prakash, Francesca Rossetto, Steven Kim, Brian Shiu, Thomas J. Fogarty, Sascha Zarins
  • Publication number: 20180318006
    Abstract: A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices.
    Type: Application
    Filed: July 9, 2018
    Publication date: November 8, 2018
    Inventors: Robert J. Behnke, II, Mani N. Prakash, Jeffrey L. Jensen, Francesca Rossetto, Joseph D. Brannan
  • Publication number: 20180235695
    Abstract: An electrosurgical apparatus is provided. The electrosurgical apparatus includes a cannula insertable into a patient and positionable adjacent abnormal tissue. The electrosurgical apparatus includes a microwave antenna that includes a distal end having a radiating section receivable within the cannula and positionable within a patient adjacent abnormal tissue. The microwave antenna is adapted to connect to a source of electrosurgical energy for transmitting electrosurgical energy to the radiating section. A portion of the radiating section substantially encompasses a portion of the abnormal tissue and may be configured to apply pressure thereto. The microwave antenna is actuated to electrocautery treat tissue to reduce blood flow to the abnormal tissue.
    Type: Application
    Filed: February 12, 2018
    Publication date: August 23, 2018
    Inventors: STEVEN KIM, KYLE R. RICK, MANI N. PRAKASH
  • Patent number: 10045814
    Abstract: A method for identifying and treating tissue includes providing an electrosurgical treatment device including an electrode assembly. One or more electrical property values of target tissue are measured. The measured electrical property values of the target tissue are compared against electrical property values of known tissue types. A tissue type of the target tissue is identified. An energy delivery configuration of the electrosurgical treatment device is adjusted to the type of target tissue. The electrosurgical treatment device is activated to treat the target tissue.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 14, 2018
    Assignee: COVIDIEN LP
    Inventors: Mani N. Prakash, Timothy J. Bahney, Darren Odom
  • Patent number: 10039601
    Abstract: An energy applicator for directing energy to tissue includes a feedline and a radiating section operably coupled to the feedline, wherein the radiating section has a length. The energy applicator also includes a length adjustment member adapted to allow for selective adjustment of the length of the radiating section. The length adjustment member includes a first pivot element and a first tensioning element coupled to the first pivot element.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: August 7, 2018
    Assignee: Covidien LP
    Inventors: Steven Kim, Kenlyn S. Bonn, Mani N. Prakash, Francesca Rossetto
  • Publication number: 20180206915
    Abstract: An ablation device includes a handle portion, a shaft, and at least one cable. The shaft extends distally from the handle portion and includes an inner conductor and an outer conductor that substantially surrounds at least a portion of the inner conductor. The cable extends from the handle portion along at least a portion of the shaft. The distal tip of the inner conductor is positionable distally beyond a distal-most end of the outer conductor. In response to movement of the at least one cable relative to the handle portion, the distal tip of the outer conductor is movable form a first position wherein the distal tip is substantially aligned with a longitudinal axis defined by the outer conductor to at least a second position wherein the distal tip is disposed at an angle relative to the longitudinal axis.
    Type: Application
    Filed: March 26, 2018
    Publication date: July 26, 2018
    Inventor: MANI N. PRAKASH
  • Patent number: 10016237
    Abstract: A microwave ablation system includes an energy source adapted to generate microwave energy and a power splitting device having an input adapted to connect to the energy source and a plurality of outputs. The plurality of outputs are configured to be coupled to a corresponding plurality of energy delivery devices. The power splitting device is configured to selectively divide energy provided from the energy source between the plurality of energy devices.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: July 10, 2018
    Assignee: Covidien LP
    Inventors: Robert J. Behnke, II, Mani N. Prakash, Jeffrey L. Jensen, Francesca Rossetto, Joseph D. Brannan
  • Patent number: 9925002
    Abstract: An ablation device includes a handle portion, a shaft, and at least one cable. The shaft extends distally from the handle portion and includes an inner conductor and an outer conductor that substantially surrounds at least a portion of the inner conductor. The cable extends from the handle portion along at least a portion of the shaft. The distal tip of the inner conductor is positionable distally beyond a distal-most end of the outer conductor. In response to movement of the at least one cable relative to the handle portion, the distal tip of the outer conductor is movable form a first position wherein the distal tip is substantially aligned with a longitudinal axis defined by the outer conductor to at least a second position wherein the distal tip is disposed at an angle relative to the longitudinal axis.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: March 27, 2018
    Assignee: Covidien LP
    Inventor: Mani N. Prakash
  • Publication number: 20180078308
    Abstract: A system and method for supplying microwave energy to tissue for microwave therapy includes an electrosurgical generator having an output for coupling to a surgical instrument. The electrosurgical generator includes a microwave energy source and a controller for controlling the operation of the electrosurgical generator. The surgical instrument, coupled to the electrosurgical generator, includes a microwave antenna for delivering microwave energy from the microwave energy source. The controller of the electrosurgical generator is operable for causing the electrosurgical generator to apply at least two pulses of microwave energy.
    Type: Application
    Filed: November 28, 2017
    Publication date: March 22, 2018
    Inventors: KYLE R. RICK, JOSEPH A. PAULUS, DARION R. PETERSON, MANI N. PRAKASH, FRANCESCA ROSSETTO
  • Publication number: 20180071022
    Abstract: 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: Application
    Filed: November 7, 2017
    Publication date: March 15, 2018
    Inventors: ROMAN TUROVSKIY, STEVEN KIM, MANI N. PRAKASH, FRANCESCA ROSSETTO
  • Publication number: 20180049805
    Abstract: A conduit assembly for transmitting energy between an electrosurgical energy generator and an energy delivering device comprises a first cable sub-assembly including a cable having a flexibility and an energy attenuation; a second cable sub-assembly including a cable having a flexibility and an energy attenuation; wherein the flexibility of the cable of the first cable sub-assembly is less than the flexibility of the cable of the second cable sub-assembly; and wherein the energy attenuation of the cable of the first cable sub-assembly is less than the energy attenuation of the cable of the second cable sub-assembly.
    Type: Application
    Filed: October 31, 2017
    Publication date: February 22, 2018
    Inventors: FRANCESCA ROSSETTO, MANI N. PRAKASH, BRIAN SHIU
  • Patent number: 9888962
    Abstract: An electrosurgical apparatus is provided. The electrosurgical apparatus includes a cannula insertable into a patient and positionable adjacent abnormal tissue. The electrosurgical apparatus includes a microwave antenna that includes a distal end having a radiating section receivable within the cannula and positionable within a patient adjacent abnormal tissue. The microwave antenna is adapted to connect to a source of electrosurgical energy for transmitting electrosurgical energy to the radiating section. A portion of the radiating section substantially encompasses a portion of the abnormal tissue and may be configured to apply pressure thereto. The microwave antenna is actuated to electrocautery treat tissue to reduce blood flow to the abnormal tissue.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: February 13, 2018
    Assignee: Covidien LP
    Inventors: Steven Kim, Kyle R. Rick, Mani N. Prakash
  • Patent number: 9867664
    Abstract: A method of deploying an antenna of an ablation device includes the step of placing an introducing member relative to tissue. The introducing member is disposed on a distal end of a handle member. The method also includes the steps of advancing an antenna distally through the handle member and at least partially through the introducer and rotating the handle member about the longitudinal axis thereof relative to the antenna. The method also includes the step of moving the handle member proximally along the longitudinal axis thereof to retract the introducer proximally relative to the antenna such that the antenna is at least partially deployed relative to the introducer to treat tissue.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: January 16, 2018
    Assignee: COVIDIEN LP
    Inventors: Brian Shiu, Kyle R. Rick, Mani N. Prakash