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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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
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Publication number: 20230090775Abstract: 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: November 29, 2022Publication date: March 23, 2023Inventors: Rajan Yadav, Koustubh Rao, Andrew J. Nelson, David Viscardi, Jetinder Singh
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Patent number: 11559405Abstract: A method of repairing a fractured humerus may include implanting a prosthetic humeral stem into a humeral canal of the fractured humerus. First and second tuberosities of the fractured humerus may be robotically machined to include first and second implant-facing surfaces that are substantially negatives of first and second surface portions of the proximal end of the prosthetic humeral stem. The first and second tuberosities may be machined so that the first and second tuberosities 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 proximal end of the prosthetic humeral stem, and the first interlocking surface interlocks with the second interlocking surface.Type: GrantFiled: February 4, 2021Date of Patent: January 24, 2023Assignee: Howmedica Osteonics Corp.Inventors: Rajan Yadav, Koustubh Rao, Andrew J. Nelson, David Viscardi, Jetinder Singh
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Patent number: 11553932Abstract: 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: GrantFiled: December 19, 2019Date of Patent: January 17, 2023Assignee: Howmedica Osteonics Corp.Inventors: Nicholas Olson, Andrew J. Nelson
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Publication number: 20230010999Abstract: An absorbent article, such as, a garment-like absorbent article, can have a first waist region, a second waist region, and a crotch region extending between and interconnecting the first waist region and the second waist region. Each of the first waist region and the second waist region can have an elastic material. The absorbent article can have an absorbent core wherein a portion of the absorbent core can be located in the crotch region, a portion of the absorbent core can be located in a portion of the first waist region, and a portion of the absorbent core can be located in a portion of the second waist region. Within each of the first waist region and the second waist region, an overlapping region can exist where the absorbent core is in an overlapping configuration with the elastic material within the first waist region and the second waist region.Type: ApplicationFiled: January 5, 2021Publication date: January 12, 2023Inventors: Jason K. Sieck, Andrew J. Nelson, Gregory A. Zander
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Patent number: 11530761Abstract: Systems and methods are disclosed for protecting a tether line within a pressurized pipe. As the tether line is extended and retracted, portions of the tether line are prevented from directly engaging jagged profiles formed in the pressurized pipe.Type: GrantFiled: March 12, 2020Date of Patent: December 20, 2022Assignee: Hydra-Stop LLCInventors: Christopher C. Vazzana, Andrew J. Nelson, Cullen Geppert, Ariel Choi, Atticus D. Rush
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Patent number: 11471290Abstract: A base member of a prosthetic stemless shoulder implant may include a proximal collar, a central anchor, and at least one peripheral anchor. The proximal collar may have a proximal surface and a distal bone-engaging surface opposite the proximal surface. The central anchor may extend distally from the bone-engaging surface and define an opening extending from the bone-engaging surface into the central anchor for receiving a humeral head component of the prosthetic stemless shoulder implant. The at least one peripheral anchor may be positioned radially outwardly of the central anchor and extend distally from the bone-engaging surface. The peripheral anchor may be frangibly connected to the proximal collar.Type: GrantFiled: July 8, 2020Date of Patent: October 18, 2022Assignee: Howmedica Osteonics Corp.Inventors: Andrew J. Nelson, Daniel E. Sapio, Manoj Kumar Singh
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Patent number: 11426285Abstract: According to one aspect of the disclosure, a glenoid implant for replacing a native glenoid includes an articulating surface configured to articulate with respect to a humeral head. A bone-facing surface may be opposite the articulating surface, the bone-facing surface having a first area configured to contact a paleoglenoid of the native glenoid. An augment portion may be coupled to the bone-facing surface, the augment portion being configured to contact a neoglenoid of the native glenoid. The augment portion may be transitionable between a first configuration in which the augment portion has a first convexity and a second configuration in which the augment portion has a second convexity different than the first convexity.Type: GrantFiled: August 11, 2020Date of Patent: August 30, 2022Assignee: Howmedica Osteonics Corp.Inventors: Lance N. Terrill, Andrew J. Nelson, Garrett Campbell
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Publication number: 20220110756Abstract: 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 21, 2021Publication date: April 14, 2022Inventors: 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: 11248992Abstract: Systems and methods for accessing and monitoring a fluid within a pressurized pipe include a nozzle coupled to a section of the pressurized pipe and defining an open proximal end fluidly communicating with the pressurized pipe through an access hole formed in the pressurized pipe, an open distal end, and an interior passage extending from the open proximal end to the open distal end. A cover plate is coupled to the open distal end of the nozzle. A valve element is disposed in the interior passage and movable between an open position, in which the valve element is entirely disposed within the nozzle, and a closed position, in which a proximal section of the valve element is disposed in the pressurized pipe. A sensor port extends through a proximal end of the nozzle and positioned to fluidly communicate with the interior passage when the valve element is in the open position.Type: GrantFiled: September 19, 2019Date of Patent: February 15, 2022Assignee: Hydra-Stop LLCInventors: Christopher C. Vazzana, Andrew J. Nelson
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Patent number: 11197768Abstract: The artificial body part control system using ultrasonic imaging includes of an ultrasonic transducer coupled with an ultrasonic image analyzer which may be adapted to transmit a control signal to an artificial body part.Type: GrantFiled: March 27, 2018Date of Patent: December 14, 2021Assignee: GEORGE MASON UNIVERSITYInventors: Siddhartha Sikdar, Joseph J. Pancrazio, Ira A. Hunt, Andrew J. Nelson, Abdullah Al-Imran