Patents by Inventor Ramesh Annayappa
Ramesh Annayappa 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).
-
Publication number: 20200113702Abstract: A tibial prosthesis, and, particularly, a fixed bearing tibial prosthesis has a two-pronged securement mechanism. The securement mechanism may or may not be angled. Advantageously, the securement mechanism, working alone or in cooperation with other securement features, minimizes micromotion between the tibial tray and tibial bearing component.Type: ApplicationFiled: December 16, 2019Publication date: April 16, 2020Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa
-
Patent number: 10543099Abstract: A tibial prosthesis, and, particularly, a fixed bearing tibial prosthesis is disclosed that has a two-pronged securement mechanism. The securement mechanism may or may not be angled. Advantageously, the securement mechanism, working alone or in cooperation with other securement features, minimizes micromotion between the tibial tray and tibial bearing component.Type: GrantFiled: September 13, 2017Date of Patent: January 28, 2020Assignee: Zimmer, Inc.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa
-
Patent number: 9918844Abstract: A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray.Type: GrantFiled: January 21, 2016Date of Patent: March 20, 2018Assignee: Zimmer, Inc.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa, Jeffery A. VanDiepenbos
-
Publication number: 20180000601Abstract: A tibial, prosthesis, and, particularly, a fixed bearing tibial, prosthesis has a two-pronged securement mechanism. The securement mechanism may or may not be angled. Advantageously, the securement mechanism, working alone or in cooperation with other securement features, minimizes micromotion between the tibial tray and tibial hearing component.Type: ApplicationFiled: September 13, 2017Publication date: January 4, 2018Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa
-
Patent number: 9763794Abstract: A tibial prosthesis can include a bearing component and a tibial tray. The bearing component can include at least one concave articulating surface, a distal surface opposite said concave articulating surface, and a notch formed in said distal surface. The notch can define a longitudinal axis, the longitudinal axis defining an offset axis angle relative to the sagittal plane. The offset axis angle can range from greater than zero degrees to about 90 degrees. The tibial tray can include a support surface capable of supporting said bearing component, the support surface having a lateral edge and a medial edge opposite said lateral edge. The tibial tray can further include a boss having a longitudinal axis, the longitudinal axis angled with respect to the sagittal plane. The boss can be lockingly engageable with said notch along said offset axis angle to lock said tibial tray to said bearing component.Type: GrantFiled: October 25, 2013Date of Patent: September 19, 2017Assignee: Zimmer, Inc.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa
-
Publication number: 20160135959Abstract: A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray.Type: ApplicationFiled: January 21, 2016Publication date: May 19, 2016Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa, Jeffery A. VanDiepenbos
-
Patent number: 9283082Abstract: A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seats the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray.Type: GrantFiled: May 21, 2014Date of Patent: March 15, 2016Assignee: Zimmer, Inc.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa, Jeffery A. VanDiepenbos
-
Publication number: 20140257506Abstract: A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray.Type: ApplicationFiled: May 21, 2014Publication date: September 11, 2014Applicant: Zimmer, Inc.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa, Jeffery A. VanDiepenbos
-
Patent number: 8764840Abstract: A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray.Type: GrantFiled: July 22, 2011Date of Patent: July 1, 2014Assignee: Zimmer, Inc.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa, Jeffery A. VanDiepenbos
-
Publication number: 20140052268Abstract: A tibial prosthesis, and, particularly, a fixed bearing tibial prosthesis has a two-pronged securement mechanism. The securement mechanism may or may not be angled. Advantageously, the securement mechanism, working atone or in cooperation with other securement features, minimizes micromotion between the tibial tray and tibial bearing component.Type: ApplicationFiled: October 25, 2013Publication date: February 20, 2014Applicant: Zimmer, Inc.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa
-
Patent number: 8628580Abstract: A tibial prosthesis, and, particularly, a fixed bearing tibial prosthesis has a two-pronged securement mechanism. The securement mechanism may or may not be angled. Advantageously, the securement mechanism, working alone or in cooperation with other securement features, minimizes micromotion between the tibial tray and tibial bearing component.Type: GrantFiled: July 22, 2011Date of Patent: January 14, 2014Assignee: Zimmer, Inc.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa
-
Publication number: 20120035737Abstract: A tibial prosthesis has a bearing component configured for an anterior-medial insertion, which advantageously avoids the extensor mechanism of the knee. A tibial tray may include a banana-shaped boss that corresponds to a notch formed in the bearing component. After the bearing component is inserted along the anterior-medial path, the boss is received within the notch by rotating the bearing component with respect to the tibial tray. This rotation seat the bearing component upon the tibial tray in the manner of a fixed-bearing prosthesis. Alternatively, the boss and notch may define angled central axes which allow straight anterior-medial insertion of the bearing component and locking engagement to the tibial tray.Type: ApplicationFiled: July 22, 2011Publication date: February 9, 2012Applicant: ZIMMER, INC.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa, Jeffery A. VanDiepenbos
-
Publication number: 20120035735Abstract: A tibial prosthesis, and, particularly, a fixed bearing tibial prosthesis has a two-pronged securement mechanism. The securement mechanism may or may not be angled. Advantageously, the securement mechanism, working alone or in cooperation with other securement features, minimizes micromotion between the tibial tray and tibial bearing component.Type: ApplicationFiled: July 22, 2011Publication date: February 9, 2012Applicant: ZIMMER, INC.Inventors: Adam H. Sanford, Brian D. Byrd, Ramesh Annayappa