Patents by Inventor Rao S. Bezwada

Rao S. Bezwada 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: 10863984
    Abstract: A surgical stapler end effector comprises a staple cartridge, an anvil, and a buttress assembly. The staple cartridge comprises a plurality of staples and a deck. The staple cartridge is operable to drive the staples through the deck. The anvil is movable from an open position toward the staple cartridge to reach a closed position. The anvil includes an underside having staple forming surface configured to receive staples driven through the deck. The buttress assembly comprises a buttress body and an adhesive material. The adhesive material comprises a polymer. The polymer is bioabsorbable. The polymer has an inherent viscosity at or below 3.0 dL/g.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: December 15, 2020
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Rao S. Bezwada, Christopher W. Widenhouse
  • Publication number: 20200214699
    Abstract: A surgical stapler end effector assembly comprises a staple cartridge, an anvil, and a buttress assembly. The staple cartridge comprises a plurality of staples and a deck. The staple cartridge is operable to drive the staples through the deck. The anvil is movable from an open position toward the staple cartridge to reach a closed position. The anvil includes an underside having staple forming surface configured to receive staples driven through the deck. The buttress assembly comprises a buttress body, an adhesive material, and a plurality of reinforcement strands. The reinforcement strands are configured to engage one or more staples fired through the buttress body.
    Type: Application
    Filed: January 3, 2020
    Publication date: July 9, 2020
    Inventors: Frederick E. Shelton, IV, Jason L. Harris, Rao S. Bezwada, Charles J. Scheib, Prudence A. Turner
  • Patent number: 10689330
    Abstract: The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: June 23, 2020
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S. Bezwada
  • Publication number: 20200187940
    Abstract: A buttress assembly is configured to temporarily adhere to a wet surgical stapler end effector. The buttress assembly includes a buttress body and a humidity tolerant adhesive material. The humidity tolerant adhesive material is applied to at least one side of the buttress body. The humidity tolerant adhesive material is configured to hold the buttress body to an underside of an anvil or a deck of a staple cartridge for at least five minutes in an environment of 100% relative humidity at approximately 37° C.
    Type: Application
    Filed: December 26, 2019
    Publication date: June 18, 2020
    Inventors: Frederick E. Shelton, IV, Michael J. Vendely, Prudence A. Turner, Jackie Donners, Mark Timmer, Rao S. Bezwada, Aidan Craigwood, Caroline Hagerman, Ashley Easter, Kathrin Holtzmann
  • Publication number: 20200165192
    Abstract: The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
    Type: Application
    Filed: January 29, 2020
    Publication date: May 28, 2020
    Inventor: Rao S. Bezwada
  • Patent number: 10568621
    Abstract: A surgical stapler end effector assembly comprises a staple cartridge, an anvil, and a buttress assembly. The staple cartridge comprises a plurality of staples and a deck. The staple cartridge is operable to drive the staples through the deck. The anvil is movable from an open position toward the staple cartridge to reach a closed position. The anvil includes an underside having staple forming surface configured to receive staples driven through the deck. The buttress assembly comprises a buttress body, an adhesive material, and a plurality of reinforcement strands. The reinforcement strands are configured to engage one or more staples fired through the buttress body.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: February 25, 2020
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Jason L. Harris, Rao S. Bezwada, Charles J. Scheib, Prudence A. Turner
  • Patent number: 10550072
    Abstract: The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: February 4, 2020
    Assignee: Bezwada Biomedical, LLC
    Inventor: Rao S Bezwada
  • Patent number: 10517592
    Abstract: A buttress assembly is configured to temporarily adhere to a wet surgical stapler end effector. The buttress assembly includes a buttress body and a humidity tolerant adhesive material. The humidity tolerant adhesive material is applied to at least one side of the buttress body. The humidity tolerant adhesive material is configured to hold the buttress body to an underside of an anvil or a deck of a staple cartridge for at least five minutes in an environment of 100% relative humidity at approximately 37° C.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: December 31, 2019
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Michael J. Vendely, Prudence A. Turner, Jackie Donners, Mark Timmer, Rao S. Bezwada, Aidan Craigwood, Caroline Hagerman, Ashley Easter, Kathrin Holtzmann
  • Publication number: 20190314020
    Abstract: A method of applying a buttress to a surgical stapler end effector comprises positioning a buttress assembly between an anvil and a staple cartridge of the end effector. The buttress assembly comprises a buttress body and an adhesive material. The adhesive material faces either an underside of the anvil or a deck of the staple cartridge. The anvil is in an open position relative to the staple cartridge during the act of positioning the buttress assembly between the anvil and the staple cartridge. The method further comprises moving the anvil toward the staple cartridge then moving the anvil back to the open position. The buttress assembly is adhered to the underside of the anvil or the deck of the staple cartridge via the adhesive material with the anvil moved back to the open position. The adhesive material comprises a bioabsorbable polymer.
    Type: Application
    Filed: May 2, 2019
    Publication date: October 17, 2019
    Inventors: Frederick E. Shelton, IV, Rao S. Bezwada, Jason L. Harris, Prudence A. Turner, Mark S. Zeiner, Charles J. Scheib
  • Publication number: 20190298338
    Abstract: A buttress is applied to an end effector of a surgical stapler. The buttress is loaded on a platform of a buttress applier cartridge. The end effector is closed upon the platform. An adhesive layer of the buttress secures the buttress to the end effector. The buttress is thus adhered to the end effector when the end effector is opened. The end effector is then actuated on tissue of a patient, thereby stapling the buttress to the tissue.
    Type: Application
    Filed: April 8, 2019
    Publication date: October 3, 2019
    Inventors: Michael J. Vendely, Trevor J. Barton, Jason L. Harris, Charles J. Scheib, Emily A. Schellin, Prudence A. Turner, Steven G. Hall, Victoria Dalessandro, Jackie Donners, Mark Timmer, Rao S. Bezwada, Aidan Craigwood, Caroline Hagerman, Ashley Easter, Kathrin Holtzmann, Frederick E. Shelton, IV, Mark S. Zeiner
  • Patent number: 10349939
    Abstract: A method of applying a buttress to a surgical stapler end effector comprises positioning a buttress assembly between an anvil and a staple cartridge of the end effector. The buttress assembly comprises a buttress body and an adhesive material. The adhesive material faces either an underside of the anvil or a deck of the staple cartridge. The anvil is in an open position relative to the staple cartridge during the act of positioning the buttress assembly between the anvil and the staple cartridge. The method further comprises moving the anvil toward the staple cartridge then moving the anvil back to the open position. The buttress assembly is adhered to the underside of the anvil or the deck of the staple cartridge via the adhesive material with the anvil moved back to the open position. The adhesive material comprises a bioabsorbable polymer.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: July 16, 2019
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Rao S. Bezwada, Christopher W. Widenhouse, Jason L. Harris, Prudence A. Turner, Mark S. Zeiner, Charles J. Scheib, Jerome R. Morgan
  • Publication number: 20190167262
    Abstract: A buttress is applied to an end effector of a surgical stapler. The buttress is loaded on a platform of a buttress applier cartridge. The end effector is closed upon the platform. An adhesive layer of the buttress secures the buttress to the end effector. The buttress is thus adhered to the end effector when the end effector is opened. The end effector is then actuated on tissue of a patient, thereby stapling the buttress to the tissue.
    Type: Application
    Filed: December 6, 2018
    Publication date: June 6, 2019
    Inventors: Michael J. Vendely, Trevor J. Barton, Jason L. Harris, Charles J. Scheib, Emily A. Schellin, Prudence A. Turner, Steven G. Hall, Victoria Dalessandro, Jackie Donners, Mark Timmer, Rao S. Bezwada, Aidan Craigwood, Caroline Hagerman, Ashley Easter, Kathrin Holtzmann, Frederick E. Shelton, IV, Mark S. Zeiner
  • Publication number: 20190167263
    Abstract: A buttress is applied to an end effector of a surgical stapler. The buttress is loaded on a platform of a buttress applier cartridge. The end effector is closed upon the platform. An adhesive layer of the buttress secures the buttress to the end effector. The buttress is thus adhered to the end effector when the end effector is opened. The end effector is then actuated on tissue of a patient, thereby stapling the buttress to the tissue.
    Type: Application
    Filed: December 6, 2018
    Publication date: June 6, 2019
    Inventors: Michael J. Vendely, Trevor J. Barton, Jason L. Harris, Charles J. Scheib, Emily A. Schellin, Prudence A. Turner, Steven G. Hall, Victoria Dalessandro, Jackie Donners, Mark Timmer, Rao S. Bezwada, Aidan Craigwood, Caroline Hagerman, Ashley Easter, Kathrin Holtzmann, Frederick E. Shelton, IV, Mark S. Zeiner
  • Publication number: 20190150918
    Abstract: A buttress is applied to an end effector of a surgical stapler. The buttress is loaded on a platform of a buttress applier cartridge. The end effector is closed upon the platform. An adhesive layer of the buttress secures the buttress to the end effector. The buttress is thus adhered to the end effector when the end effector is opened. The end effector is then actuated on tissue of a patient, thereby stapling the buttress to the tissue.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 23, 2019
    Inventors: Michael J. Vendely, Trevor J. Barton, Jason L. Harris, Charles J. Scheib, Emily A. Schellin, Prudence A. Turner, Steven G. Hall, Victoria Dalessandro, Jackie Donners, Mark Timmer, Rao S. Bezwada, Aidan Craigwood, Caroline Hagerman, Ashley Easter, Kathrin Holtzmann, Frederick E. Shelton, IV, Mark S. Zeiner
  • Patent number: 10238388
    Abstract: A buttress assembly is configured to temporarily adhere to a wet surgical stapler end effector. The buttress assembly includes a buttress body and a humidity tolerant adhesive. The adhesive includes a bioabsorbable polymer having a block configuration selected from the group consisting of A-B-A and A-B-C. The A block is a bioabsorbable homopolymer characterized by a glass transition temperature of at least about 0° C., a crystallinity as measured by X-ray diffraction of at least about 30%, and a melting temperature of at least about 50° C. The B block is a bioabsorbable homopolymer or co-polymer that is characterized by a glass transition temperature of at least about ?40° C., a crystallinity as measured by X-ray diffraction of at most about 25%, and 2 a molecular weight of from about 20 to about 80 kDa. The C block is a bioabsorbable hydrophilic homopolymer or co-polymer that is miscible with water at 37° C.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: March 26, 2019
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Michael J. Vendely, Prudence A. Turner, Jack Donners, Rao S. Bezwada, Aidan Craigwood, Caroline Hagerman, Ashley Easter, Kathrin Holtzmann
  • Patent number: 10172617
    Abstract: A surgical stapler end effector comprises a staple cartridge, an anvil, and a buttress assembly. The staple cartridge comprises a plurality of staples and a deck. The staple cartridge is operable to drive the staples through the deck. The anvil is movable from an open position toward the staple cartridge to reach a closed position. The anvil includes an underside having staple forming surface configured to receive staples driven through the deck. The buttress assembly comprises a buttress body and an adhesive material. The adhesive material is configured to removably secure the buttress body to the deck of the staple cartridge or the underside of the anvil. The adhesive material comprises a malleable bioabsorbable polymer.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: January 8, 2019
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Rao S. Bezwada, Jason L. Harris, Prudence A. Turner, Mark S. Zeiner, Charles J. Scheib
  • Patent number: 10172618
    Abstract: A surgical stapler end effector comprises a staple cartridge, an anvil, and a buttress assembly. The staple cartridge comprises a plurality of staples and a deck. The staple cartridge is operable to drive the staples through the deck. The anvil is movable from an open position toward the staple cartridge to reach a closed position. The anvil includes an underside having staple forming surface configured to receive staples driven through the deck. The buttress assembly comprises a buttress body and an adhesive material. The adhesive material comprises a polymer. The polymer is bioabsorbable. The polymer has glass transition temperature (Tg) at or below 0° C.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: January 8, 2019
    Assignee: Ethicon LLC
    Inventors: Frederick E. Shelton, IV, Rao S. Bezwada, Christopher W. Widenhouse
  • Patent number: 10166023
    Abstract: A buttress is applied to an end effector of a surgical stapler. The buttress is loaded on a platform of a buttress applier cartridge. The end effector is closed upon the platform. An adhesive layer of the buttress secures the buttress to the end effector. The buttress is thus adhered to the end effector when the end effector is opened. The end effector is then actuated on tissue of a patient, thereby stapling the buttress to the tissue.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 1, 2019
    Assignee: Ethicon LLC
    Inventors: Michael J. Vendely, Trevor J. Barton, Jason L Harris, Charles J. Scheib, Emily A. Schellin, Prudence A. Turner, Steven G. Hall, Victoria Dalessandro, Jack Donners, Mark Timmer, Rao S. Bezwada, Aidan Craigwood, Caroline Hagerman, Ashley Easter, Kathrin Holtzmann, Frederick E. Shelton, IV, Mark S. Zeiner
  • Publication number: 20180194717
    Abstract: The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
    Type: Application
    Filed: December 21, 2017
    Publication date: July 12, 2018
    Inventor: Rao S. Bezwada
  • Patent number: 9868696
    Abstract: The present invention relates to the discovery of new class of hydrolysable amino acid derivatives and absorbable polyester amides, polyamides, polyepoxides, polyureas and polyurethanes prepared therefrom. The resultant absorbable polymers are useful for drug delivery, tissue engineering, tissue adhesives, adhesion prevention, bone wax formulations, medical device coatings, stents, stent coatings, highly porous foams, reticulated foams, wound care, cardiovascular applications, orthopedic devices, surface modifying agents and other implantable medical devices. In addition, these absorbable polymers should have a controlled degradation profile.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: January 16, 2018
    Assignee: Bezwada Biomedial, LLC
    Inventor: Rao S Bezwada