Patents by Inventor Seok Chang Ryu
Seok Chang Ryu 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: 11877732Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection. Additional fibers may be placed in the inner stylet to measure temperature and to measure deflection.Type: GrantFiled: May 4, 2020Date of Patent: January 23, 2024Assignee: Intelligent Fiber Optic Systems CorporationInventors: Seok Chang Ryu, Mark Cutkosky, Richard J. Black, Joannes Mario Costa, Behzad Moslehi, Fereydoun Faridian, Levy Oblea, Vahid Sotoudeh
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Publication number: 20230398680Abstract: Systems and methods for controlling end-effectors. In some examples, a system includes a finger-tracking system configured for tracking one or more fingers of an operator and controlling movement of the end effector based on tracking the one or more fingers. The system includes a sensor configured for measuring a distance between the end effector and a target object in an environment of the end effector. The system includes a feedback system configured for electrically stimulating at least one of the one or more fingers of the operator with an electrical pulse having a frequency based on the distance between the end effector and the target object.Type: ApplicationFiled: November 8, 2021Publication date: December 14, 2023Inventors: Hangue Park, Seok Chang Ryu, Saurabh Biswas
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Patent number: 11801362Abstract: Embodiments disclosed herein are directed to surgical cannulas and methods relating thereto. In some embodiments, a method includes cutting one or more lines in a tubular member to form a tubular body and a hinge of a surgical cannula. In some embodiments, a surgical cannula includes a fiber brag grating (FBG) reflector mounted to a tendon for deflecting a distal tip of the surgical cannula. A controller is coupled to the FBG reflector and is configured to determine a tension in the tendon based on reflected light from the FBG reflector. In some embodiments, a surgical cannula includes a tubular body including a plurality of apertures extending therethrough.Type: GrantFiled: May 21, 2019Date of Patent: October 31, 2023Assignee: THE TEXAS A&M UNIVERSITY SYSTEMInventors: Seok Chang Ryu, Rohith Karthikeyan, Shivanand Pattanshetti
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Publication number: 20210219966Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire or hollow SMA tube, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection. Additional fibers may be placed in the inner stylet to measure temperature and to measure deflection.Type: ApplicationFiled: April 9, 2021Publication date: July 22, 2021Applicant: Intelligent Fiber Optic Systems, Inc.Inventors: Seok Chang RYU, Richard J. BLACK, Behzad MOSLEHI
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Patent number: 11000265Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire or hollow SMA tube, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection. Additional fibers may be placed in the inner stylet to measure temperature and to measure deflection.Type: GrantFiled: June 19, 2017Date of Patent: May 11, 2021Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Seok Chang Ryu, Richard J. Black, Behzad Moslehi
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Patent number: 10675008Abstract: A biopsy needle has a cylindrical shell outer cannula and a stylet consisting of an inner stylet and outer stylet, both of which are inserted into the cylindrical cannula. The outer stylet has a series of strain relieved slits which provide bending over a deflection region in one direction, and the outer stylet is formed from a material such as a shape memory alloy (SMA) having a superelastic phase. The deflection is generated by an SMA wire spanning a deflection extent and attached to the outer stylet on either side of the deflection extent. The inner stylet, when positioned inside the outer stylet, has one or more actuation fibers which couple optical energy into the SMA wire, causing a deflection of the outer stylet over the deflection extent, with the optical energy provided to the actuation fibers for control of the deflection.Type: GrantFiled: September 24, 2013Date of Patent: June 9, 2020Assignee: Intelligent Fiber Optic Systems, Inc.Inventors: Seok Chang Ryu, Mark Cutkosky, Richard J. Black, Joannes Mario Costa, Behzad Moslehi, Fereydoun Faridian, Levy Oblea, Vahid Sotoudeh
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Publication number: 20190351180Abstract: Embodiments disclosed herein are directed to surgical cannulas and methods relating thereto. In some embodiments, a method includes cutting one or more lines in a tubular member to form a tubular body and a hinge of a surgical cannula. In some embodiments, a surgical cannula includes a fiber brag grating (FBG) reflector mounted to a tendon for deflecting a distal tip of the surgical cannula. A controller is coupled to the FBG reflector and is configured to determine a tension in the tendon based on reflected light from the FBG reflector. In some embodiments, a surgical cannula includes a tubular body including a plurality of apertures extending therethrough.Type: ApplicationFiled: May 21, 2019Publication date: November 21, 2019Applicant: The Texas A&M University SystemInventors: Seok Chang Ryu, Rohith Karthikeyan, Shivanand Pattanshetti