Patents by Inventor Michael C. Ferko
Michael C. Ferko 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: 9855057Abstract: A method for aligning an orthopedic implant in a joint replacement includes determining the bone and cartilage deficiency from an undegenerated state caused by wear of a joint. Then a resection of a bone in the joint is made based on the deficiency of bone and cartilage from the undegenerated state and the size of a joint implant so as to locate the joint surface of the implant in the undegenerated cartilage location. The condylar wear from the undegenerated states may be assessed at a distal and posterior location on each of a medial and a lateral femoral condyle. A distal cut is made on the femur at a location adjusting for the condylar wear from the undegenerated state. The distal cut varus-valgus angle is oriented parallel to a plane across the distal femur after adjusting for wear in the distal location on the medial and lateral condyle.Type: GrantFiled: June 23, 2015Date of Patent: January 2, 2018Assignee: Howmedica Osteonics Corp.Inventors: Stuart L. Axelson, Jr., Mohamed Soliman, Michael C. Ferko, Robert Frederick Simes, Jr., James H. Howell
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Patent number: 9795397Abstract: A system for replacing a trochlear groove region of a femur. The system includes a prosthesis that includes a bone contact surface and a periphery that defines an outer perimeter. The bone contact surface has a plurality of protrusions and a spatial configuration with respect to one another. Additionally, the system includes a first template that has a plurality of guide holes and a first periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. Also, included in the system is a second template that has a plurality of guide holes and a second periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. The plurality of guide holes of the second template are spatially arranged with respect to the second periphery to substantially match the spatial configuration of the plurality of protrusions of the prosthesis.Type: GrantFiled: April 25, 2016Date of Patent: October 24, 2017Assignee: Stryker CorporationInventors: Carlos E. Collazo, Stuart L. Axelson, Jr., Michael C. Ferko, Emily Hampp
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Patent number: 9782261Abstract: A method for replacing a joint surface, which includes resecting a first portion of the joint surface to create a wall surface and inner resected surface. The wall surface (2006) separates the inner resected surface and a non-resected portion of the joint surface. Further included in the method is cutting a concave groove having a first radius into the wall surface, and engaging the concave groove with a periphery of a joint prosthesis. The periphery includes a second radius that is substantially the same as the first radius of the concave groove.Type: GrantFiled: February 25, 2014Date of Patent: October 10, 2017Assignee: Stryker CorporationInventors: Carlos E. Collazo, Stuart L. Axelson, Jr., Michael C. Ferko, Emily Hampp
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Publication number: 20170281202Abstract: Disclosed herein are systems and methods of patella arthroplasty. A navigated patella clamp used in an arthroplasty procedure includes first and second movable jaw members and an actuation member coupled to the first and second jaw members for moving the first and second jaw members along a plane toward and away from one another. The patella clamp further includes a tracker and adjustable stylus for positioning the clamp on a patient's patella below a desired resection plane. The adjustable stylus coupled to the clamp is used to check the position and orientation of the clamp with respect to the patella to ensure the correct amount of bone will be resected from the patella corresponding to the thickness of a patella component that will be implanted on the resected patella.Type: ApplicationFiled: March 31, 2016Publication date: October 5, 2017Inventors: Emily Hampp, John R. Fossez, Michael C. Ferko
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Publication number: 20170172749Abstract: Disclosed herein are knee replacement systems for replacing the articular surface of a distal femur. The systems include one or more unicompartmental components, namely patellofemoral, lateral condylar and medial condylar components. The components are configured such that when engaged to the femur the peripheries thereof do not cross specific locations and/or regions of the femur, namely the intercondylar notch and condylopatellar notch. The patellofemoral components described herein preferably have an extension portion extending posteriorly from a posterior periphery thereof towards an intercondylar notch of the femur without contacting the intercondylar notch of the femur when the patellofemoral component is engaged to the femur. The extension portion preferably extends posteriorly from a posterior periphery of the patellofemoral component towards the condylopatellar notch of the femur without contacting the notch.Type: ApplicationFiled: March 9, 2017Publication date: June 22, 2017Inventors: Peter Wellings, Michael C. Ferko, Stuart L. Axelson, JR.
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Patent number: 9655727Abstract: Disclosed herein are knee replacement systems for replacing the articular surface of a distal femur. The systems include one or more unicompartmental components, namely patellofemoral, lateral condylar and medial condylar components. The components are configured such that when engaged to the femur the peripheries thereof do not cross specific locations and/or regions of the femur, namely the intercondylar notch and condylopatellar notch. The patellofemoral components described herein preferably have an extension portion extending posteriorly from a posterior periphery thereof towards an intercondylar notch or the femur without contacting the intercondylar notch of the femur when the patellofemoral component is engaged to the femur. The extension portion preferably extends posteriorly from a posterior periphery of the patellofemoral component towards the condylopatellar notch of the femur without contacting the notch.Type: GrantFiled: December 12, 2013Date of Patent: May 23, 2017Assignee: Stryker CorporationInventors: Peter John Wellings, Michael C. Ferko, Stuart L. Axelson, Jr.
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Publication number: 20170086983Abstract: Disclosed herein are methods of designing and fabricating prosthetic implants having a sagittal wall in which at least a portion thereof traverses a non-linear path. A method of fabricating such a prosthetic implant may include generating a virtual bone model based on image information obtained from at least one bone, determining a proposed height of the prosthetic implant at a first location on the virtual bone model, determining a proposed resection depth into the at least one bone at the first location based at least in part on the proposed height of the prosthetic implant, and determining a curved resection path across a portion of the virtual bone model. The curved resection path may intersect the first location and the prosthetic implant may have a curved sagittal wall corresponding to the curved resection path.Type: ApplicationFiled: December 12, 2016Publication date: March 30, 2017Inventors: Robert Davignon, Michael C. Ferko, Stuart L. Axelson, JR.
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Patent number: 9554862Abstract: Disclosed herein are methods of designing and fabricating prosthetic implants having a sagittal wall in which at least a portion thereof traverses a non-linear path. A method of fabricating such a prosthetic implant may include generating a virtual bone model based on image information obtained from at least one bone, determining a proposed height of the prosthetic implant at a first location on the virtual bone model, determining a proposed resection depth into the at least one bone at the first location based at least in part on the proposed height of the prosthetic implant, and determining a curved resection path across a portion of the virtual bone model. The curved resection path may intersect the first location and the prosthetic implant may have a curved sagittal wall corresponding to the curved resection path.Type: GrantFiled: June 5, 2014Date of Patent: January 31, 2017Assignee: Mako Surgical Corp.Inventors: Robert Davignon, Michael C. Ferko, Stuart L. Axelson, Jr.
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Patent number: 9522008Abstract: The invention includes a system, method and kit for preparation of a bone. One aspect of the present invention is a bone preparation system comprising a cutting instrument and a guiding element. The cutting instrument includes a distal attachment feature and a distal region. The guiding element includes a proximal attachment feature and a guiding surface. When the proximal attachment feature of the guiding element is engaged with the distal attachment feature of the cutting instrument, the cutting instrument can pivot about the proximal attachment feature until the distal region contacts the guiding surface.Type: GrantFiled: March 6, 2015Date of Patent: December 20, 2016Assignee: Howmedica Osteonics Corp.Inventors: Michael C. Ferko, Vincent Alipit
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Publication number: 20160278930Abstract: Disclosed herein are orthopaedic implants having a medial portion and a lateral portion, each of the medial and lateral portions having a proximal surface and a distal surface opposite the proximal surface. An intermediate portion joins the medial and lateral portions, wherein the intermediate portion has a proximal surface angled to the proximal surfaces of the medial and lateral portions about a longitudinal axis of the orthopaedic implant. The proximal surface of the medial portion is stepped from the proximal surface of the lateral portion about the longitudinal axis. The proximal surfaces of the medial and lateral portions are configured to receive corresponding medial and lateral inserts.Type: ApplicationFiled: June 10, 2016Publication date: September 29, 2016Inventors: Robert Davignon, Michael C. Ferko, Stuart L. Axelson, JR.
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Publication number: 20160262910Abstract: A prosthetic implant useful in a cementless application is disclosed. The implant may include a curved bone facing surface and one or more pegs or keels. Preferably, the implant is implanted on a bone surface that has been prepared so as to allow for a snap fit between the implant and the bone.Type: ApplicationFiled: May 24, 2016Publication date: September 15, 2016Inventors: Stuart L. Axelson, JR., Michael C. Ferko, Peter John Wellings
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Publication number: 20160235420Abstract: A system for replacing a trochlear groove region of a femur. The system includes a prosthesis that includes a bone contact surface and a periphery that defines an outer perimeter. The bone contact surface has a plurality of protrusions and a spatial configuration with respect to one another. Additionally, the system includes a first template that has a plurality of guide holes and a first periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. Also, included in the system is a second template that has a plurality of guide holes and a second periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. The plurality of guide holes of the second template are spatially arranged with respect to the second periphery to substantially match the spatial configuration of the plurality of protrusions of the prosthesis.Type: ApplicationFiled: April 25, 2016Publication date: August 18, 2016Inventors: Carlos E. Collazo, Stuart L. Axelson, JR., Michael C. Ferko, Emily Hampp
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Patent number: 9387085Abstract: Disclosed herein are tibial baseplates having a medial portion and a lateral portion, each of the medial and lateral portions having a proximal surface and a distal surface opposite the proximal surface. An intermediate portion joins the medial and lateral portions, wherein the intermediate portion has a proximal surface angled to the proximal surfaces of the medial and lateral portions about a longitudinal axis of the tibial baseplate. The proximal surface of the medial portion is stepped from the proximal surface of the lateral portion about the longitudinal axis. The proximal surfaces of the medial and lateral portions are configured to receive corresponding medial and lateral inserts.Type: GrantFiled: May 30, 2014Date of Patent: July 12, 2016Assignee: Stryker CorporationInventors: Robert Davignon, Michael C. Ferko, Stuart L. Axelson, Jr.
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Patent number: 9381085Abstract: A prosthetic implant useful in a cementless application is disclosed. The implant may include a curved bone facing surface and one or more pegs or keels. Preferably, the implant is implanted on a bone surface that has been prepared so as to allow for a snap fit between the implant and the bone.Type: GrantFiled: June 22, 2012Date of Patent: July 5, 2016Assignee: Stryker CorporationInventors: Stuart L. Axelson, Jr., Michael C. Ferko, Peter John Wellings
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Patent number: 9358117Abstract: A system for replacing a trochlear groove region of a femur. The system includes a prosthesis that includes a bone contact surface and a periphery that defines an outer perimeter. The bone contact surface has a plurality of protrusions and a spatial configuration with respect to one another. Additionally, the system includes a first template that has a plurality of guide holes and a first periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. Also, included in the system is a second template that has a plurality of guide holes and a second periphery that defines an outer perimeter that substantially corresponds with the periphery of the prosthesis. The plurality of guide holes of the second template are spatially arranged with respect to the second periphery to substantially match the spatial configuration of the plurality of protrusions of the prosthesis.Type: GrantFiled: February 25, 2014Date of Patent: June 7, 2016Assignee: Stryker CorporationInventors: Carlos E. Collazo, Stuart L. Axelson, Jr., Michael C. Ferko, Emily Hampp
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Publication number: 20150374386Abstract: A method for replacing a joint surface, which includes resecting a first portion of the joint surface to create a wall surface and inner resected surface. The wall surface (2006) separates the inner resected surface and a non-resected portion of the joint surface. Further included in the method is cutting a concave groove having a first radius into the wall surface, and engaging the concave groove with a periphery of a joint prosthesis. The periphery includes a second radius that is substantially the same as the first radius of the concave groove.Type: ApplicationFiled: February 25, 2014Publication date: December 31, 2015Applicant: STRYKER CORPORATIONInventors: Carlos E. Collazo, Stuart L. Axelson, Jr., Michael C. Ferko, Emily Hampp
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Publication number: 20150351859Abstract: Disclosed herein are methods of designing and fabricating prosthetic implants having a sagittal wall in which at least a portion thereof traverses a non-linear path. A method of fabricating such a prosthetic implant may include generating a virtual bone model based on image information obtained from at least one bone, determining a proposed height of the prosthetic implant at a first location on the virtual bone model, determining a proposed resection depth into the at least one bone at the first location based at least in part on the proposed height of the prosthetic implant, and determining a curved resection path across a portion of the virtual bone model. The curved resection path may intersect the first location and the prosthetic implant may have a curved sagittal wall corresponding to the curved resection path.Type: ApplicationFiled: June 5, 2014Publication date: December 10, 2015Inventors: Robert Davignon, Michael C. Ferko, Stuart L. Axelson, JR.
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Publication number: 20150342741Abstract: Disclosed herein are tibial baseplates having a medial portion and a lateral portion, each of the medial and lateral portions having a proximal surface and a distal surface opposite the proximal surface. An intermediate portion joins the medial and lateral portions, wherein the intermediate portion has a proximal surface angled to the proximal surfaces of the medial and lateral portions about a longitudinal axis of the tibial baseplate. The proximal surface of the medial portion is stepped from the proximal surface of the lateral portion about the longitudinal axis. The proximal surfaces of the medial and lateral portions are configured to receive corresponding medial and lateral inserts.Type: ApplicationFiled: May 30, 2014Publication date: December 3, 2015Applicant: STRYKER CORPORATIONInventors: Robert Davignon, Michael C. Ferko, Stuart L. Axelson, JR.
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Publication number: 20150289883Abstract: A method for aligning an orthopedic implant in a joint replacement includes determining the bone and cartilage deficiency from an undegenerated state caused by wear of a joint. Then a resection of a bone in the joint is made based on the deficiency of bone and cartilage from the undegenerated state and the size of a joint implant so as to locate the joint surface of the implant in the undegenerated cartilage location. The condylar wear from the undegenerated states may be assessed at a distal and posterior location on each of a medial and a lateral femoral condyle. A distal cut is made on the femur at a location adjusting for the condylar wear from the undegenerated state. The distal cut varus-valgus angle is oriented parallel to a plane across the distal femur after adjusting for wear in the distal location on the medial and lateral condyle.Type: ApplicationFiled: June 23, 2015Publication date: October 15, 2015Inventors: Stuart L. Axelson, JR., Mohamed Soliman, Michael C. Ferko, Robert Frederick Simes, JR., James H. Howell
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Patent number: 9113957Abstract: A method for aligning an orthopedic implant in a joint replacement includes determining the bone and cartilage deficiency from an undegenerated state caused by wear of a joint. Then a resection of a bone in the joint is made based on the deficiency of bone and cartilage from the undegenerated state and the size of a joint implant so as to locate the joint surface of the implant in the undegenerated cartilage location. The condylar wear from the undegenerated states may be assessed at a distal and posterior location on each of a medial and a lateral femoral condyle. A distal cut is made on the femur at a location adjusting for the condylar wear from the undegenerated state. The distal cut varus-valgus angle is oriented parallel to a plane across the distal femur after adjusting for wear in the distal location on the medial and lateral condyle.Type: GrantFiled: October 28, 2014Date of Patent: August 25, 2015Assignee: Howmedica Osteonics Corp.Inventors: Stuart L. Axelson, Jr., Mohamed Soliman, Michael C. Ferko, Robert F. Simes, Jr., James H. Howell