Patents by Inventor Andrew J. Nelson
Andrew J. Nelson 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: 12376965Abstract: Disclosed herein is a humeral head trial, a system for humeral trialing, and a method for removing a humeral head trial from a humeral stem. The humeral head trial may include a first portion, a second portion, and a post extending from the second portion. The first portion may define a convex articular surface with a movable surface substantially flush with the convex articular surface. The post may define a first length in a first configuration and a second length in a second configuration. The first length may be greater than the second length. The post may change from the first configuration to the second configuration by moving the movable surface with respect to the convex articular surface.Type: GrantFiled: May 22, 2023Date of Patent: August 5, 2025Assignee: Howmedica Osteonics Corp.Inventor: Andrew J. Nelson
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Patent number: 12357328Abstract: A resection guide includes an anchor having bone anchoring features, a cutting block having a cutting guide defined therein, and a linkage flexibly connecting the cutting block to the anchor. The flexibility of the linkage provides the cutting block with six degrees of freedom of motion relative to the anchor.Type: GrantFiled: May 17, 2023Date of Patent: July 15, 2025Assignee: Howmedica Osteonics Corp.Inventors: Andrew J. Nelson, Daniel E. Sapio, Sunny Shorabh, Shashank Verma, Morgan Schliem
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Patent number: 12268610Abstract: A stemless prosthetic shoulder joint may include a prosthetic humeral head and a stemless base. The stemless base may include a collar and an anchor extending from the collar intended to anchor the base into the proximal humerus. The base may include a proximal collar having a proximal surface and a bone-engaging surface opposite the proximal surface. The collar may have a superior portion and an inferior portion, the superior portion defining an arc shape and the inferior portion defining a substantially triangular shape.Type: GrantFiled: May 5, 2021Date of Patent: April 8, 2025Assignee: Howmedica Osteonics Corp.Inventors: Daniel E. Sapio, Ashish Mehta, Andrew J. Nelson, Bernhard Hofstaetter, Sunny Shorabh
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Publication number: 20250090337Abstract: A stemless prosthetic shoulder joint may include a prosthetic humeral head and a stemless base. The stemless base may include a collar and an anchor extending from the collar intended to anchor the base into the proximal humerus. The anchor may include various features to enhance the fixation of the base, including hooks, threads, and/or expandable members that may be transitioned from a contracted insertion condition to an expanded implanted condition once the base is positioned in the bone. The anchor and/or collar may also include additional features to enhance fixation, such as geometries and surface features to enhance fixation to bone. The anchor may include a plurality of chisel slots to facilitate removal of bone during a revision surgery.Type: ApplicationFiled: December 3, 2024Publication date: March 20, 2025Applicant: Howmedica Osteonics Corp.Inventors: Philip T. Kemp, Andrew J. Nelson, Jan Heinsohn, Rajan Yadav, Koustubh Rao, Gennaro A. Barile, Ashish Mehta, Venkateswaran Perumal, David Viscardi
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Patent number: 12193942Abstract: A stemless prosthetic shoulder joint may include a prosthetic humeral head and a stemless base. The stemless base may include a collar and an anchor extending from the collar intended to anchor the base into the proximal humerus. The anchor may include various features to enhance the fixation of the base, including hooks, threads, and/or expandable members that may be transitioned from a contracted insertion condition to an expanded implanted condition once the base is positioned in the bone. The anchor and/or collar may also include additional features to enhance fixation, such as geometries and surface features to enhance fixation to bone. The anchor may include a plurality of chisel slots to facilitate removal of bone during a revision surgery.Type: GrantFiled: July 12, 2021Date of Patent: January 14, 2025Assignee: HOWMEDICA OSTEONICS CORP.Inventors: Philip T. Kemp, Andrew J. Nelson, Jan Heinsohn, Rajan Yadav, Koustubh Rao, Gennaro A. Barile, Ashish Mehta, Venkateswaran Perumal, David Viscardi
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Publication number: 20240367837Abstract: A product transfer apparatus for transferring product between a horizontal form, fill, and seal machine and a cartoner machine is provided. The product transfer apparatus includes an electromagnetic motor table configured to define a plurality of pre-selected zones and a plurality of moving elements configured to float over a surface of the electromagnetic motor table and move between one or more of the pre-selected zones. The product transfer apparatus further includes a product delivery device configured to deposit one or more products in a pre-selected common orientation, relative to a longitudinal axis of the product transfer apparatus, onto one or more moving elements of the plurality of moving elements, respectively, at a first pre-selected zone of the plurality of pre-selected zones such that each of the one or more moving elements receives a single product from the product delivery device in the pre-selected common orientation at the first pre-selected zone.Type: ApplicationFiled: May 2, 2024Publication date: November 7, 2024Inventors: Jeffrey D. Wintring, Robert M. Kalany, Andrew J. Nelson, Jeffrey E. Farmer
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Publication number: 20240341979Abstract: An impactor system is for impacting a base of a shoulder implant into a humerus. The system may include a housing having distal stabilizer configured to contact a proximal resected surface of the humerus. The distal stabilizer may define an open space. An impaction member may be slidably received within the housing. The impaction member may have a proximal surface and a distal connection mechanism adapted to connect to the base of the shoulder implant. The impaction member may be movable from a first proximal position in which the base of the shoulder implant, when connected to the impaction member, is positioned within the open space defined by the distal stabilizer, to a second distal position in which the base of the shoulder implant, when connected to the impaction member, is positioned at least partially distal to the open space defined by the distal stabilizer.Type: ApplicationFiled: April 10, 2024Publication date: October 17, 2024Inventors: Daniel E. Sapio, Andrew J. Nelson, Gennaro A. Barile, Sunny Shorabh
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Publication number: 20240341966Abstract: A method of repairing a fractured bone may include implanting a prosthetic stem into an intramedullary canal of the fractured bone. First and second bone segments of the fractured bone may be robotically machined to include first and second implant-facing surfaces that are substantially negatives of first and second surface portions of the first end of the prosthetic stem. The first and second tuberosities may be machined so that the first and second bone segments have first and second interlocking surfaces shaped to interlock with each other. During implantation, the first and second implant-facing surfaces are in contact with the first and second surface portions of the first end of the prosthetic stem, and the first interlocking surface interlocks with the second interlocking surface.Type: ApplicationFiled: April 9, 2024Publication date: October 17, 2024Inventors: Rajan Yadav, Koustubh Rao, Andrew J. Nelson, David Viscardi, Jetinder Singh
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Patent number: 11986401Abstract: An impactor system is for impacting a base of a shoulder implant into a humerus. The system may include a housing having distal stabilizer configured to contact a proximal resected surface of the humerus. The distal stabilizer may define an open space. An impaction member may be slidably received within the housing. The impaction member may have a proximal surface and a distal connection mechanism adapted to connect to the base of the shoulder implant. The impaction member may be movable from a first proximal position in which the base of the shoulder implant, when connected to the impaction member, is positioned within the open space defined by the distal stabilizer, to a second distal position in which the base of the shoulder implant, when connected to the impaction member, is positioned at least partially distal to the open space defined by the distal stabilizer.Type: GrantFiled: June 29, 2020Date of Patent: May 21, 2024Assignee: Howmedica Osteonics Corp.Inventors: Daniel E. Sapio, Andrew J. Nelson, Gennaro A. Barile, Sunny Shorabh
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Patent number: 11980549Abstract: A method of repairing a fractured bone may include implanting a prosthetic stem into an intramedullary canal of the fractured bone. First and second bone segments of the fractured bone may be robotically machined to include first and second implant-facing surfaces that are substantially negatives of first and second surface portions of the first end of the prosthetic stem. The first and second tuberosities may be machined so that the first and second bone segments have first and second interlocking surfaces shaped to interlock with each other. During implantation, the first and second implant-facing surfaces are in contact with the first and second surface portions of the first end of the prosthetic stem, and the first interlocking surface interlocks with the second interlocking surface.Type: GrantFiled: November 29, 2022Date of Patent: May 14, 2024Assignee: Howmedica Osteonics Corp.Inventors: Rajan Yadav, Koustubh Rao, Andrew J. Nelson, David Viscardi, Jetinder Singh
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Publication number: 20240115294Abstract: An external fixation system may include first and second fixation rings and a plurality of adjustable length struts. Each adjustable length strut may have two joints, a rod, a tube, and an actuator configured to drive the rod axially relative to the tube to change an effective length of the strut. The system may include a plurality of controller modules each configured to couple to a corresponding strut. The external fixation system may have a manual mode of operation in which the controller modules are not coupled to the struts, and manual actuation of the actuators changes the effective lengths of the struts in discrete length increments. The external fixation system may have an automated mode of operation in which the controller modules are coupled to the struts, and automated actuation of the actuators changes the effective lengths of the struts in infinitesimally small length increments.Type: ApplicationFiled: December 19, 2023Publication date: April 11, 2024Applicant: Stryker European Operations LimitedInventors: Chulho Pak, Subash K. Mannanal, Peter Sterrantino, Noah Roberson, Anup Kumar, Andrew J. Nelson
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Patent number: 11896267Abstract: An external fixation system may include first and second fixation rings and a plurality of adjustable length struts. Each adjustable length strut may have two joints, a rod, a tube, and an actuator configured to drive the rod axially relative to the tube to change an effective length of the strut. The system may include a plurality of controller modules each configured to couple to a corresponding strut. The external fixation system may have a manual mode of operation in which the controller modules are not coupled to the struts, and manual actuation of the actuators changes the effective lengths of the struts in discrete length increments. The external fixation system may have an automated mode of operation in which the controller modules are coupled to the struts, and automated actuation of the actuators changes the effective lengths of the struts in infinitesimally small length increments.Type: GrantFiled: January 27, 2023Date of Patent: February 13, 2024Assignee: Stryker European Operations LimitedInventors: Chulho Pak, Subash K. Mannanal, Peter Sterrantino, Noah Roberson, Anup Kumar, Andrew J. Nelson
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Patent number: 11833056Abstract: A stemless prosthetic shoulder joint may include a prosthetic humeral head and a stemless base. The stemless base may include a collar and an anchor extending from the collar intended to anchor the base into the proximal humerus. The anchor may include various features to enhance the fixation of the base, including hooks, threads, and/or expandable members that may be transitioned from a contracted insertion condition to an expanded implanted condition once the base is positioned in the bone. The anchor and/or collar may also include additional features to enhance fixation, such as geometries and surface features to enhance fixation to bone. The anchor may include a plurality of chisel slots to facilitate removal of bone during a revision surgery.Type: GrantFiled: December 21, 2021Date of Patent: December 5, 2023Assignee: Howmedica Osteonics Corp.Inventors: Philip T. Kemp, Andrew J. Nelson, Jan Heinsohn, Rajan Yadav, Koustubh Rao, Gennaro A. Barile, Ashish Mehta, Venkateswaran Perumal, David Viscardi
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Publication number: 20230363921Abstract: Disclosed herein is a humeral head trial, a system for humeral trialing, and a method for removing a humeral head trial from a humeral stem. The humeral head trial may include a first portion, a second portion, and a post extending from the second portion. The first portion may define a convex articular surface with a movable surface substantially flush with the convex articular surface. The post may define a first length in a first configuration and a second length in a second configuration. The first length may be greater than the second length. The post may change from the first configuration to the second configuration by moving the movable surface with respect to the convex articular surface.Type: ApplicationFiled: May 22, 2023Publication date: November 16, 2023Applicant: Howmedica Osteonics Corp.Inventor: Andrew J. Nelson
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Publication number: 20230285037Abstract: A resection guide includes an anchor having bone anchoring features, a cutting block having a cutting guide defined therein, and a linkage flexibly connecting the cutting block to the anchor. The flexibility of the linkage provides the cutting block with six degrees of freedom of motion relative to the anchor.Type: ApplicationFiled: May 17, 2023Publication date: September 14, 2023Inventors: Andrew J. Nelson, Daniel E. Sapio, Sunny Shorabh, Shashank Verma, Morgan Schliem
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Publication number: 20230255665Abstract: An external fixation system may include first and second fixation rings and a plurality of adjustable length struts. Each adjustable length strut may have two joints, a rod, a tube, and an actuator configured to drive the rod axially relative to the tube to change an effective length of the strut. The system may include a plurality of controller modules each configured to couple to a corresponding strut. The external fixation system may have a manual mode of operation in which the controller modules are not coupled to the struts, and manual actuation the actuators changes the effective lengths of the struts in discrete length increments. The external fixation may have an automated mode of operation in which the controller modules are coupled to the struts, and automated actuation of the actuators changes the effective lengths of the struts in infinitesimally small length increments.Type: ApplicationFiled: January 27, 2023Publication date: August 17, 2023Applicant: Stryker European Operations LimitedInventors: Chulho Pak, Subash K. Mannanal, Peter Sterrantino, Noah Roberson, Anup Kumar, Andrew J. Nelson
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Patent number: 11684377Abstract: A resection guide includes an anchor having bone anchoring features, a cutting block having a cutting guide defined therein, and a linkage flexibly connecting the cutting block to the anchor. The flexibility of the linkage provides the cutting block with six degrees of freedom of motion relative to the anchor.Type: GrantFiled: January 21, 2021Date of Patent: June 27, 2023Assignee: Howmedica Osteonics Corp.Inventors: Andrew J. Nelson, Daniel E. Sapio, Sunny Shorabh, Shashank Verma, Morgan Schliem
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Patent number: 11678993Abstract: Disclosed herein is a humeral head trial, a system for humeral trialing, and a method for removing a humeral head trial from a humeral stem. The humeral head trial may include a first portion, a second portion, and a post extending from the second portion. The first portion may define a convex articular surface with a movable surface substantially flush with the convex articular surface. The post may define a first length in a first configuration and a second length in a second configuration. The first length may be greater than the second length. The post may change from the first configuration to the second configuration by moving the movable surface with respect to the convex articular surface.Type: GrantFiled: February 18, 2021Date of Patent: June 20, 2023Assignee: Howmedica Osteonics Corp.Inventor: Andrew J. Nelson
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Publication number: 20230149176Abstract: According to one aspect of the disclosure, a prosthetic implant system includes a first articulation component, a base, and a second anchor. The base may have a proximal portion and a first anchor extending in a distal direction along a longitudinal first anchor axis. The proximal portion of the base may be configured to couple to the first articulation component. The second anchor may be formed separately from the base and may extend along a longitudinal second anchor axis. The base may include a channel extending from a first opening in the proximal portion of the base through a second opening in a distal portion of the first anchor. The channel may be sized and shaped to receive the second anchor therethrough. When the second anchor is received within the channel, the longitudinal first anchor axis may be oblique to the longitudinal second anchor axis.Type: ApplicationFiled: November 14, 2022Publication date: May 18, 2023Inventors: Sunny Shorabh, Vishal Dilip Jagtap, Andrew J. Nelson, Rajan Yadav
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Publication number: 20230112855Abstract: Described herein are cannulated reamer designs and methods. In one embodiment, a reamer comprises a cannulated central body portion, a plurality of cutting legs and outer frame. The cannulated central body portion has an inner wall surface and an opposing outer wall surface defining a thickness and a bone contacting surface and an opposing distal end surface defining a length, the inner wall surface defining a bore about a central longitudinal axis of the cannulated central body portion. The plurality of cutting legs extends outwardly from the cannulated central body portion. The other defines a periphery of the reamer, the outer frame coupled to a lateral end of each of the plurality of cutting legs. The cannulated central body portion has a recess extending entirely through the thickness and only partially though the length.Type: ApplicationFiled: December 14, 2022Publication date: April 13, 2023Inventors: Nicholas Olson, Andrew J. Nelson