Patents by Inventor Shaun R. Cronin

Shaun R. Cronin 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: 10939923
    Abstract: Methods and instruments for performing a kinematically-aligned total knee arthroplasty (TKA) are disclosed. Goals of the kinematically-aligned TKA can include restoration of (1) the femoral and tibial joint lines to the patient's natural joint line, (2) the patient's Hip-Knee-Ankle alignment to their constitutional alignment prior to developing osteoarthritis and (3) restoration of the patient's natural soft tissue laxity and envelope. A shim block assembly can be used in resecting the distal medial and lateral condyles to account for cartilage wear on the distal condyles from osteoarthritis. The shim block assembly can include a plurality of shims, and each shim can be attachable to or integral with a reference block. At least one of the plurality of shims can have a medial portion with a thickness different from a thickness of a lateral portion of the shim. The shims need not be joined together as a single medial/lateral component but may be independent of one another.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: March 9, 2021
    Assignee: Zimmer, Inc.
    Inventors: Edward R. Yager, Shaun R. Cronin, Stephen M. Howell, David B. Willard
  • Patent number: 10265181
    Abstract: An orthopedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: April 23, 2019
    Assignee: Zimmer, Inc.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin
  • Publication number: 20190046215
    Abstract: Methods and instruments for performing a kinematically-aligned total knee arthroplasty (TKA) are disclosed. Goals of the kinematically-aligned TKA can include restoration of (1) the femoral and tibial joint lines to the patient's natural joint line, (2) the patient's Hip-Knee-Ankle alignment to their constitutional alignment prior to developing osteoarthritis and (3) restoration of the patient's natural soft tissue laxity and envelope. A shim block assembly can be used in resecting the distal medial and lateral condyles to account for cartilage wear on the distal condyles from osteoarthritis. The shim block assembly can include a plurality of shims, and each shim can be attachable to or integral with a reference block. At least one of the plurality of shims can have a medial portion with a thickness different from a thickness of a lateral portion of the shim. The shims need not be joined together as a single medial/lateral component but may be independent of one another.
    Type: Application
    Filed: October 17, 2018
    Publication date: February 14, 2019
    Inventors: Edward R. Yager, Shaun R. Cronin, Stephen M. Howell, David B. Willard
  • Patent number: 10195041
    Abstract: An orthopedic tibial prosthesis includes a tibial baseplate with features designed for use with small-stature knee-replacement patients. The tibial prosthesis may include a shortened tibial keel, tibial keel fins which define a large angle with respect to a longitudinal axis of the keel, and/or tibial keel fins which extend along less than the entire longitudinal extent of the keel.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: February 5, 2019
    Assignee: Zimmer, Inc.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin, Scott Dykema
  • Patent number: 10130375
    Abstract: Methods and instruments for performing a kinematically-aligned total knee arthroplasty (TKA) are disclosed. Goals of the kinematically-aligned TKA can include restoration of (1) the femoral and tibial joint lines to the patient's natural joint line, (2) the patient's Hip-Knee-Ankle alignment to their constitutional alignment prior to developing osteoarthritis and (3) restoration of the patient's natural soft tissue laxity and envelope. A shim block assembly can be used in resecting the distal medial and lateral condyles to account for cartilage wear on the distal condyles from osteoarthritis. The shim block assembly can include a plurality of shims, and each shim can be attachable to or integral with a reference block. At least one of the plurality of shims can have a medial portion with a thickness different from a thickness of a lateral portion of the shim. The shims need not be joined together as a single medial/lateral component but may be independent of one another.
    Type: Grant
    Filed: July 27, 2015
    Date of Patent: November 20, 2018
    Assignee: Zimmer, Inc.
    Inventors: Edward R. Yager, Shaun R. Cronin, Stephen M. Howell, David B. Willard
  • Publication number: 20180000602
    Abstract: An orthopaedic tibial prosthesis includes a tibial baseplate with features designed for use with small-stature knee-replacement patients. The tibial prosthesis may include a shortened tibial keel, tibial keel fins which define a large angle with respect to a longitudinal axis of the keel, and/or tibial keel fins which extend along less than the entire longitudinal extent of the keel.
    Type: Application
    Filed: September 13, 2017
    Publication date: January 4, 2018
    Inventors: Mary S.S. Wentorf, Calie B. Grey, Shaun R. Cronin, Scott Dykema
  • Publication number: 20170266011
    Abstract: An orthopaedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Application
    Filed: June 7, 2017
    Publication date: September 21, 2017
    Inventors: Mary S.S. Wentorf, Calie B. Grey, Shaun R. Cronin
  • Patent number: 9763796
    Abstract: An orthopedic tibial prosthesis includes a tibial baseplate with features designed for use with small-stature knee-replacement patients. The tibial prosthesis may include a shortened tibial keel, tibial keel fins which define a large angle with respect to a longitudinal axis of the keel, and/or tibial keel fins which extend along less than the entire longitudinal extent of the keel.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: September 19, 2017
    Assignee: Zimmer, Inc.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin, Scott Dykema
  • Patent number: 9707089
    Abstract: An orthopedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: July 18, 2017
    Assignee: Zimmer, Inc.
    Inventors: Calie B. Grey, Shaun R. Cronin
  • Patent number: 9615941
    Abstract: An orthopedic tool for loosening the connection between orthopedic components. In one embodiment, the orthopedic tool includes a housing and a wedge. The housing has a head, an upper portion, a lower portion, and an opening between the upper and lower portions. The wedge is positioned at least partially between the upper portion and the lower portion of the housing and is actuatable to move toward the head of the housing. When at least a portion of the head of the housing is placed in mating engagement with the junction between two assembled orthopedic components, advancement of the wedge towards the head results in separation of the upper portion and lower portion of the housing. Thus, as the wedge is advanced toward the head, the upper and lower portions of the housing are separated, which results in corresponding separation of the assembled orthopedic components.
    Type: Grant
    Filed: May 5, 2015
    Date of Patent: April 11, 2017
    Assignee: Zimmer, Inc.
    Inventors: Christopher M. S. Meek, Shaun R. Cronin, Peter Darrigan
  • Publication number: 20160287397
    Abstract: An orthopaedic tibial prosthesis includes a tibial baseplate with features designed for use with small-stature knee-replacement patients. The tibial prosthesis may include a shortened tibial keel, tibial keel fins which define a large angle with respect to a longitudinal axis of the keel, and/or tibial keel fins which extend along less than the entire longitudinal extent of the keel.
    Type: Application
    Filed: June 9, 2016
    Publication date: October 6, 2016
    Inventors: Mary S.S. Wentorf, Calie B. Grey, Shaun R. Cronin, Scott Dykema
  • Patent number: 9381090
    Abstract: An orthopaedic tibial prosthesis includes a tibial baseplate with features designed for use with small-stature knee-replacement patients. The tibial prosthesis may include a shortened tibial keel, tibial keel fins which define a large angle with respect to a longitudinal axis of the keel, and/or tibial keel fins which extend along less than the entire longitudinal extent of the keel.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: July 5, 2016
    Assignee: ZIMMER, INC.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin, Scott E. Dykema
  • Publication number: 20160158019
    Abstract: An orthopaedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Application
    Filed: February 17, 2016
    Publication date: June 9, 2016
    Inventors: Calie B. Grey, Shaun R. Cronin
  • Patent number: 9308096
    Abstract: An orthopaedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: April 12, 2016
    Assignee: Zimmer, Inc.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin
  • Publication number: 20160030053
    Abstract: Methods and instruments for performing a kinematically-aligned total knee arthroplasty (TKA) are disclosed. Goals of the kinematically-aligned TKA can include restoration of (1) the femoral and tibial joint lines to the patient's natural joint line, (2) the patient's Hip-Knee-Ankle alignment to their constitutional alignment prior to developing osteoarthritis and (3) restoration of the patient's natural soft tissue laxity and envelope. A shim block assembly can be used in resecting the distal medial and lateral condyles to account for cartilage wear on the distal condyles from osteoarthritis. The shim block assembly can include a plurality of shims, and each shim can be attachable to or integral with a reference block. At least one of the plurality of shims can have a medial portion with a thickness different from a thickness of a lateral portion of the shim. The shims need not be joined together as a single medial/lateral component but may be independent of one another.
    Type: Application
    Filed: July 27, 2015
    Publication date: February 4, 2016
    Inventors: Edward R. Yager, Shaun R. Cronin, Stephen M. Howell, David B. Willard
  • Publication number: 20150230940
    Abstract: An orthopedic tool for loosening the connection between orthopedic components. In one embodiment, the orthopedic tool includes a housing and a wedge. The housing has a head, an upper portion, a lower portion, and an opening between the upper and lower portions. The wedge is positioned at least partially between the upper portion and the lower portion of the housing and is actuatable to move toward the head of the housing. When at least a portion of the head of the housing is placed in mating engagement with the junction between two assembled orthopedic components, advancement of the wedge towards the head results in separation of the upper portion and lower portion of the housing. Thus, as the wedge is advanced toward the head, the upper and lower portions of the housing are separated, which results in corresponding separation of the assembled orthopedic components.
    Type: Application
    Filed: May 5, 2015
    Publication date: August 20, 2015
    Inventors: Christopher M.S. Meek, Shaun R. Cronin, Peter Darrigan
  • Patent number: 8845641
    Abstract: A device (20) used during a medical procedure to engage a cross-section of a bone is disclosed herein. The device is selectively expandable to correspond to the cross-section of the bone. Once the device is properly sized, the device is used as a sizing tool to select the proper size of an implant or as a surgical guide for preparing the bone with a surgical instrument, for example.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 30, 2014
    Assignee: Zimmer, Inc.
    Inventors: Brad Wheeler, Adam M. Griner, Vincent A. Webster, Rebecca Parrott, Shaun R. Cronin, Bart C. Benedict
  • Publication number: 20140249641
    Abstract: An orthopaedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Application
    Filed: May 15, 2014
    Publication date: September 4, 2014
    Applicant: Zimmer, Inc.
    Inventors: Mary S.S. Wentorf, Calie B. Grey, Shaun R. Cronin
  • Patent number: 8758444
    Abstract: An orthopaedic knee prosthesis is provided including a tibial baseplate component having a distal, bone-contacting surface with one or more fixation structures extending distally therefrom, in which the fixation structures are asymmetrically arranged within the baseplate periphery.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: June 24, 2014
    Assignee: Zimmer, Inc.
    Inventors: Mary S. S. Wentorf, Calie B. Grey, Shaun R. Cronin
  • Publication number: 20140074244
    Abstract: An assembly system configured to seat a first orthopedic component having either a male taper or a female taper with a second orthopedic component having the other of a male taper or a female taper. In one embodiment, the assembly system includes a taper seating connector having a fastener and a bushing moveable retained on the fastener. The fastener may be connected to the first orthopedic component and the bushing may be positioned adjacent the second orthopedic component. The corresponding tapers on the first and second orthopedic components may be configured to secure the first and second orthopedic components together. Thus, by exerting a sufficient force on the bushing, the bushing will move along the fastener, transferring the force to the second orthopedic component. In this manner, the corresponding tapers of the first and second orthopedic components may be seated.
    Type: Application
    Filed: November 18, 2013
    Publication date: March 13, 2014
    Applicant: Zimmer, Inc.
    Inventors: Shaun R. Cronin, Scott Dykema, Jeff Blaylock