Patents by Inventor Ronald R. Irwin

Ronald R. Irwin 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).

  • Cruciate-retaining tibial prosthesis
    Patent number: 9668871
    Abstract: A tibial prosthesis comprises a medial base portion configured to engage a medial surface of a tibia and a lateral base portion configured to engage a lateral surface of the tibia. At least a portion of the medial and lateral base portions are separated by a passage interposed therebetween. The tibial prosthesis also comprises a bridge coupling the medial base portion and the lateral base portion, wherein at least a portion of the bridge is elevated above a portion of the passage between the medial base portion and the lateral base portion. The bridge may define an underlying area that receives at least a portion of a tibial eminence when the tibial prosthesis is engaged with the tibia, wherein the height of the bridge varies in a superior direction across the passage.
    Type: Grant
    Filed: July 3, 2014
    Date of Patent: June 6, 2017
    Assignee: Mako Surgical Corp.
    Inventors: Ronald R. Irwin, Jason Karl Otto, Ali Zafar Abbasi, Mark Ellsworth Nadzadi
  • Cruciate-retaining tibial prosthesis
    Patent number: 8911501
    Abstract: A tibial prosthesis comprises a medial base portion configured to engage a medial surface of a tibia and a lateral base portion configured to engage a lateral surface of the tibia. At least a portion of the medial and lateral base portions are separated by a passage interposed therebetween. The tibial prosthesis also comprises a bridge coupling the medial base portion and the lateral base portion, wherein at least a portion of the bridge is elevated above a portion of the passage between the medial base portion and the lateral base portion. The bridge may define an underlying area that receives at least a portion of a tibial eminence when the tibial prosthesis is engaged with the tibia, wherein the height of the bridge varies in a superior direction across the passage.
    Type: Grant
    Filed: December 29, 2011
    Date of Patent: December 16, 2014
    Assignee: Mako Surgical Corp.
    Inventors: Ronald R. Irwin, Jason Karl Otto, Ali Zafar Abbasi, Mark Ellsworth Nadzadi
  • CRUCIATE-RETAINING TIBIAL PROSTHESIS
    Publication number: 20140324178
    Abstract: A tibial prosthesis comprises a medial base portion configured to engage a medial surface of a tibia and a lateral base portion configured to engage a lateral surface of the tibia. At least a portion of the medial and lateral base portions are separated by a passage interposed therebetween. The tibial prosthesis also comprises a bridge coupling the medial base portion and the lateral base portion, wherein at least a portion of the bridge is elevated above a portion of the passage between the medial base portion and the lateral base portion. The bridge may define an underlying area that receives at least a portion of a tibial eminence when the tibial prosthesis is engaged with the tibia, wherein the height of the bridge varies in a superior direction across the passage.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 30, 2014
    Inventors: Ronald R. Irwin, Jason Karl Otto, Ali Zafar Abbasi, Mark Ellsworth Nadzadi
  • CRUCIATE-RETAINING TIBIAL PROSTHESIS
    Publication number: 20130173010
    Abstract: A tibial prosthesis comprises a medial base portion configured to engage a medial surface of a tibia and a lateral base portion configured to engage a lateral surface of the tibia. At least a portion of the medial and lateral base portions are separated by a passage interposed therebetween. The tibial prosthesis also comprises a bridge coupling the medial base portion and the lateral base portion, wherein at least a portion of the bridge is elevated above a portion of the passage between the medial base portion and the lateral base portion. The bridge may define an underlying area that receives at least a portion of a tibial eminence when the tibial prosthesis is engaged with the tibia, wherein the height of the bridge varies in a superior direction across the passage.
    Type: Application
    Filed: December 29, 2011
    Publication date: July 4, 2013
    Inventors: Ronald R. Irwin, Jason Karl OTTO, Ali Zafar Abbasi, Mark Ellsworth Nadzadi