Patents by Inventor Ron Donkers
Ron Donkers 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: 10893947Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.Type: GrantFiled: September 5, 2018Date of Patent: January 19, 2021Assignee: Zimmer, Inc.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John E. Meyers, Arlen D. Hanssen, David Lewallen
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Publication number: 20190000632Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.Type: ApplicationFiled: September 5, 2018Publication date: January 3, 2019Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John E. Meyers, Arlen D. Hanssen, David Lewallen
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Patent number: 10085841Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis.Type: GrantFiled: October 5, 2016Date of Patent: October 2, 2018Assignee: Zimmer, Inc.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John E. Meyers, Arlen D. Hanssen, David Lewallen
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Publication number: 20180098856Abstract: A tibial augment for use with a knee joint prosthesis, composed of annular members of different stock sizes, each size being configured to fit within a cavity formed in a human tibia. The augment may include a stepped distal surface. A provisional (temporary) tibial augment used to ensure a proper fit for the permanent augment is also provided. The provisional may include grooves configured to cooperate with a set of ribs on a tong-like holder used for removing the provisional from the cavity. A pusher for use implanting the tibial augment is also provided. In addition, a system for creating a cavity in a human tibia is also described. The system preferably includes a guide with a slot therein and a set of osteotomes that are inserted to within different portions of the slot. Methods for using the tools and/or implanting the prosthetic devices discussed above are also described.Type: ApplicationFiled: December 12, 2017Publication date: April 12, 2018Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, David Jones, John E. Meyers, Stephen J. Vankoski, Arlen D. Hanssen, David Lewallen
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Patent number: 9907664Abstract: A tibial augment for use with a knee joint prosthesis, composed of annular members of different stock sizes, each size being configured to fit within a cavity formed in a human tibia. The augment may include a stepped distal surface. A provisional (temporary) tibial augment used to ensure a proper fit for the permanent augment is also provided. The provisional may include grooves configured to cooperate with a set of ribs on a tong-like holder used for removing the provisional from the cavity. A pusher for use implanting the tibial augment is also provided. In addition, a system for creating a cavity in a human tibia is also described. The system preferably includes a guide with a slot therein and a set of osteotomes that are inserted within different portions of the slot.Type: GrantFiled: November 10, 2015Date of Patent: March 6, 2018Assignee: Zimmer, Inc.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, David Jones, John E. Meyers, Stephen J Vankoski, Arlen D. Hanssen, David Lewallen
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Patent number: 9713532Abstract: A femoral augment for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of fee femur.Type: GrantFiled: May 27, 2015Date of Patent: July 25, 2017Assignee: Zimmer, Inc.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John E. Meyers, Arlen D. Hanssen, David Lewallen
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Publication number: 20170020675Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.Type: ApplicationFiled: October 5, 2016Publication date: January 26, 2017Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John E. Meyers, Arlen D. Hanssen, David Lewallen
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Publication number: 20160058560Abstract: A tibial augment for use with a knee joint prosthesis, composed of annular members of different stock sizes, each size being configured to fit within a cavity formed in a human tibia. The augment may include a stepped distal surface. A provisional (temporary) tibial augment used to ensure a proper fit for the permanent augment is also provided. The provisional may include grooves configured to cooperate with a set of ribs on a tong-like holder used for removing the provisional from the cavity. A pusher for use implanting the tibial augment is also provided. In addition, a system for creating a cavity in a human tibia is also described. The system preferably includes a guide with a slot therein and a set of osteotomes that are inserted within different portions of the slot. Methods for using the tools and/or implanting the prosthetic devices discussed above are also described.Type: ApplicationFiled: November 10, 2015Publication date: March 3, 2016Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, David Jones, John E. Meyers, Stephen J. Vankoski, Arlen D. Hanssen, David Lewallen
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Patent number: 9265614Abstract: A tibial augment for use with a knee joint prosthesis, composed of annular members of different stock sizes, each size being configured to fit within a cavity formed in a human tibia. The augment may include a stepped distal surface. A provisional (temporary) tibial augment used to ensure a proper fit for the permanent augment is also provided. The provisional may include grooves configured to cooperate with a set of ribs on a tong-like holder used for removing the provisional from the cavity. A pusher for use implanting the tibial augment is also provided. In addition, a system for creating a cavity in a human tibia is also described. The system preferably includes a guide with a slot therein and a set of osteotomes that are inserted within different portions of the slot. Methods for using the tools and/or implanting the prosthetic devices discussed above are also described.Type: GrantFiled: July 17, 2013Date of Patent: February 23, 2016Assignee: Zimmer, Inc.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, David Jones, John E. Meyers, Stephen J Vankoski, Arlen D. Hanssen, David Lewallen
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Publication number: 20150257890Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.Type: ApplicationFiled: May 27, 2015Publication date: September 17, 2015Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John E. Meyers, Arlen D. Hanssen, David Lewallen
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Patent number: 9044326Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone.Type: GrantFiled: January 14, 2011Date of Patent: June 2, 2015Assignee: Zimmer, Inc.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John Meyers, Arlen D. Hanssen, David G. Lewallen
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Publication number: 20130304221Abstract: A tibial augment for use with a knee joint prosthesis, composed of annular members of different stock sizes, each size being configured to fit within a cavity formed in a human tibia. The augment may include a stepped distal surface. A provisional (temporary) tibial augment used to ensure a proper fit for the permanent augment is also provided. The provisional may include grooves configured to cooperate with a set of ribs on a tong-like holder used for removing the provisional from the cavity. A pusher for use implanting the tibial augment is also provided. In addition, a system for creating a cavity in a human tibia is also described. The system preferably includes a guide with a slot therein and a set of osteotomes that are inserted within different portions of the slot. Methods for using the tools and/or implanting the prosthetic devices discussed above are also described.Type: ApplicationFiled: July 17, 2013Publication date: November 14, 2013Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, David Jones, John E. Meyers, Stephen J. Vankoski, Arlen D. Hanssen, David Lewallen
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Patent number: 8506645Abstract: A tibial augment for use with a knee joint prosthesis, composed of annular members of different stock sizes, each size being configured to fit within a cavity formed in a human tibia. The augment may include a stepped distal surface. A provisional (temporary) tibial augment used to ensure a proper fit for the permanent augment is also provided. The provisional may include grooves configured to cooperate with a set of ribs on a tong-like holder used for removing the provisional from the cavity. A pusher for use implanting the tibial augment is also provided. In addition, a system for creating a cavity in a human tibia is also described. The system preferably includes a guide with a slot therein and a set of osteotomes that are inserted within different portions of the slot. Methods for using the tools and/or implanting the prosthetic devices discussed above are also described.Type: GrantFiled: September 20, 2010Date of Patent: August 13, 2013Assignee: Zimmer, Inc.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott E. Dykema, David Jones, John E. Meyers, Stephen J. Vankoski, Arlen D. Hanssen, David G. Lewallen
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Publication number: 20110112651Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.Type: ApplicationFiled: January 14, 2011Publication date: May 12, 2011Applicant: ZIMMER, INC.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John Meyers, Arlen D. Hanssen, David G. Lewallen
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Patent number: 7935120Abstract: A method of preparing the proximal tibial and distal ends of the femur for the implantation of prosthetic components, including the steps of exposing the joint; resecting the distal end of the femur; resecting the tibia; and making a preliminary rough cut of a posterior portion of the pair of condyles. The rough cut is made by positioning a guide on the distal end of the femur and severing a small piece of the posterior portion of the pair of condyles. The rough cut is made prior to the step of resecting the tibia. The method may include finishing the femur by severing and removing a final piece of the posterior portion of the pair of condyles. The small piece removed in the preliminary rough cut step is sized to preserve enough of posterior portion to permit the removal of the final piece.Type: GrantFiled: April 29, 2005Date of Patent: May 3, 2011Assignee: Zimmer Technology, Inc.Inventors: Adam M. Griner, Kim Bertin, Richard Berger, Ron Donkers
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Patent number: 7892288Abstract: A femoral augment, or set of augments, for use with a knee joint prosthesis, where the femoral augment includes a main body portion, an aperture formed within the main body portion and extending in a generally distal/proximal direction, and a pair of legs extending outwardly from said main body portion in a generally posterior direction. In the preferred embodiment, the aperture is configured to receive a stem extension implant, and to allow it to pass through. Additionally, the legs of the femoral augment are preferably configured to be seated proximal of a proximal side of a pair of condylar portions of a femoral component of a knee joint prosthesis. The present invention is intended for situations in which the distal portion of the femur is defective, and it provides a method and devices that allow for preservation of healthy peripheral bone, while still providing the necessary augmentation to the distal portion of the femur.Type: GrantFiled: March 5, 2004Date of Patent: February 22, 2011Assignee: Zimmer Technology, Inc.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John Meyers, Arlen D. Hanssen, David G. Lewallen
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Publication number: 20110009974Abstract: A tibial augment for use with a knee joint prosthesis, composed of annular members of different stock sizes, each size being configured to fit within a cavity formed in a human tibia. The augment may include a stepped distal surface. A provisional (temporary) tibial augment used to ensure a proper fit for the permanent augment is also provided. The provisional may include grooves configured to cooperate with a set of ribs on a tong-like holder used for removing the provisional from the cavity. A pusher for use implanting the tibial augment is also provided. In addition, a system for creating a cavity in a human tibia is also described. The system preferably includes a guide with a slot therein and a set of osteotomes that are inserted within different portions of the slot. Methods for using the tools and/or implanting the prosthetic devices discussed above are also described.Type: ApplicationFiled: September 20, 2010Publication date: January 13, 2011Applicant: ZIMMER TECHNOLOGY, INC.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, David Jones, John Meyers, Stephen Vankoski, Arlen D. Hanssen, David G. Lewallen
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Publication number: 20100145452Abstract: A prosthetic system that includes a prosthetic implant and a support structure secured to an inner surface of a cavity of a bone is disclosed. The support structure defines a channel that extends through the length of the support structure. The prosthetic implant is received in the channel, and a portion of the prosthetic implant is secured to an inner surface of the support structure by an adhesive. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining the channel between the pair of components.Type: ApplicationFiled: February 9, 2010Publication date: June 10, 2010Applicant: ZIMMER, INC.Inventors: Jeff Blaylock, Michael Cook, Ron Donkers, Scott Dykema, Maleata Hall, John Meyers, Arlen D. Hanssen, David G. Lewallen
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Publication number: 20080281428Abstract: Methods and apparatuses for attaching soft tissue and/or bone to orthopaedic implants. In one exemplary embodiment, the methods and apparatuses are used to attach soft tissue and/or bone to a proximal tibial implant. In another exemplary embodiment, the methods and apparatuses are used to attach soft tissue and/or bone to a proximal femoral implant.Type: ApplicationFiled: May 6, 2008Publication date: November 13, 2008Applicant: ZIMMER, INC.Inventors: John E. Meyers, Robert E. Montgomery, Dennis R. Aquilo, Scott C. Lazar, Douglas G. Branscome, Natalia Fridshtand, Scott Cron, Marvin Figueroa, Clarence M. Panchison, Kelly Timmons, Doug Gabel, Douglas Wentz, Ron Donkers, Greg Hippensteel
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Publication number: 20060004374Abstract: A method of preparing the proximal tibial and distal ends of the femur for the implantation of prosthetic components, including the steps of exposing the joint; resecting the distal end of the femur; resecting the tibia; and making a preliminary rough cut of a posterior portion of the pair of condyles. The rough cut is made by positioning a guide on the distal end of the femur and severing a small piece of the posterior portion of the pair of condyles. The rough cut is made prior to the step of resecting the tibia. The method may include finishing the femur by severing and removing a final piece of the posterior portion of the pair of condyles. The small piece removed in the preliminary rough cut step is sized to preserve enough of posterior portion to permit the removal of the final piece.Type: ApplicationFiled: April 29, 2005Publication date: January 5, 2006Inventors: Adam Griner, Kim Bertin, Richard Berger, Ron Donkers