Patents by Inventor David T. Okihisa
David T. Okihisa 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: 20230218312Abstract: Surgical tools that can be used in single port laparoscopic procedures can include a low-profile handle assembly to minimize tool interference adjacent the incision site. For example, a handle assembly for a surgical instrument can have a generally in-line configuration extending linearly along a central longitudinal axis of an elongate shaft of the instrument. A linkage mechanism including a trigger, an actuation link, and an actuation shaft can be positioned within the in-line handle. The linkage mechanism can be pivoted between an open position in which end effectors of the instrument are open and a toggle position in which the end effectors are locked closed. A locking mechanism such as a ratchet mechanism can also be used to lock the end effectors. A surgical dissector can include gripping jaws having a curved profile or an angled elongate shaft to minimize tool interference and maximize visibility within a procedure site.Type: ApplicationFiled: March 7, 2023Publication date: July 13, 2023Inventors: Arkadiusz A. Strokosz, David T. Okihisa, Steven E. Decker, Phillip De Alday, Scott V. Taylor, Henry Kahle
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Patent number: 11622783Abstract: Surgical tools that can be used in single port laparoscopic procedures can include a low-profile handle assembly to minimize tool interference adjacent the incision site. For example, a handle assembly for a surgical instrument can have a generally in-line configuration extending linearly along a central longitudinal axis of an elongate shaft of the instrument. A linkage mechanism including a trigger, an actuation link, and an actuation shaft can be positioned within the in-line handle. The linkage mechanism can be pivoted between an open position in which end effectors of the instrument are open and a toggle position in which the end effectors are locked closed. A locking mechanism such as a ratchet mechanism can also be used to lock the end effectors. A surgical dissector can include gripping jaws having a curved profile or an angled elongate shaft to minimize tool interference and maximize visibility within a procedure site.Type: GrantFiled: September 23, 2019Date of Patent: April 11, 2023Assignee: Applied Medical Resources CorporationInventors: Arkadiusz A. Strokosz, David T. Okihisa, Steven E. Decker, Phillip De Alday, Scott V. Taylor, Henry Kahle
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Publication number: 20200029988Abstract: Surgical tools that can be used in single port laparoscopic procedures can include a low-profile handle assembly to minimize tool interference adjacent the incision site. For example, a handle assembly for a surgical instrument can have a generally in-line configuration extending linearly along a central longitudinal axis of an elongate shaft of the instrument. A linkage mechanism including a trigger, an actuation link, and an actuation shaft can be positioned within the in-line handle. The linkage mechanism can be pivoted between an open position in which end effectors of the instrument are open and a toggle position in which the end effectors are locked closed. A locking mechanism such as a ratchet mechanism can also be used to lock the end effectors. A surgical dissector can include gripping jaws having a curved profile or an angled elongate shaft to minimize tool interference and maximize visibility within a procedure site.Type: ApplicationFiled: September 23, 2019Publication date: January 30, 2020Inventors: Arkadiusz A. Strokosz, David T. Okihisa, Steven E. Decker, Phillip De Alday, Scott V. Taylor, Henry Kahle
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Patent number: 10420576Abstract: Surgical tools that can be used in single port laparoscopic procedures can include a low-profile handle assembly to minimize tool interference adjacent the incision site. For example, a handle assembly for a surgical instrument can have a generally in-line configuration extending linearly along a central longitudinal axis of an elongate shaft of the instrument. A linkage mechanism including a trigger, an actuation link, and an actuation shaft can be positioned within the in-line handle. The linkage mechanism can be pivoted between an open position in which end effectors of the instrument are open and a toggle position in which the end effectors are locked closed. A locking mechanism such as a ratchet mechanism can also be used to lock the end effectors. A surgical dissector can include gripping jaws having a curved profile or an angled elongate shaft to minimize tool interference and maximize visibility within a procedure site.Type: GrantFiled: August 24, 2015Date of Patent: September 24, 2019Assignee: Applied Medical Resources CorporationInventors: Arkadiusz A. Strokosz, David T. Okihisa, Steven E. Decker, Phillip DeAlday, Scott V. Taylor, Henry Kahle
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Publication number: 20150359552Abstract: Surgical tools that can be used in single port laparoscopic procedures can include a low-profile handle assembly to minimize tool interference adjacent the incision site. For example, a handle assembly for a surgical instrument can have a generally in-line configuration extending linearly along a central longitudinal axis of an elongate shaft of the instrument. A linkage mechanism including a trigger, an actuation link, and an actuation shaft can be positioned within the in-line handle. The linkage mechanism can be pivoted between an open position in which end effectors of the instrument are open and a toggle position in which the end effectors are locked closed. A locking mechanism such as a ratchet mechanism can also be used to lock the end effectors. A surgical dissector can include gripping jaws having a curved profile or an angled elongate shaft to minimize tool interference and maximize visibility within a procedure site.Type: ApplicationFiled: August 24, 2015Publication date: December 17, 2015Inventors: Arkadiusz A. Strokosz, David T. Okihisa, Steven E. Decker, Phillip DeAlday, Scott V. Taylor, Henry Kahle
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Patent number: 9161770Abstract: A surgical instrument can comprise an elongate tube including a camming rod and an actuation mechanism operably connected to the camming rod; a first jaw spine having a first cam slot; and a second jaw spine having a second cam slot, the second jaw spine pivotally connected to the first jaw spine at a common pivot pin connected to the elongate tube. A camming pin rides along first and second interior camming surfaces and closes the jaw spines when the camming rod moves proximally. When the camming rod moves distally, a camming projection rides on first and second exterior camming surfaces on proximal sides of the first and second jaw spines and opens the jaw spines. One camming surface on each jaw spine facilitates closing the jaw spines while the other camming surface on each jaw spine facilitates opening the jaw spines. These two camming surfaces can be widely separated.Type: GrantFiled: September 30, 2013Date of Patent: October 20, 2015Assignee: Applied Medical Resources CorporationInventors: Russell E. Ahlberg, Scott V. Taylor, David T. Okihisa, Gregory I. Bak-Boychuk, Emil Karapetian, John Stout
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Patent number: 9113939Abstract: Surgical tools that can be used in single port laparoscopic procedures can include a low-profile handle assembly to minimize tool interference adjacent the incision site. For example, a handle assembly for a surgical instrument can have a generally in-line configuration extending linearly along a central longitudinal axis of an elongate shaft of the instrument. A linkage mechanism including a trigger, an actuation link, and an actuation shaft can be positioned within the in-line handle. The linkage mechanism can be pivoted between an open position in which end effectors of the instrument are open and a toggle position in which the end effectors are locked closed. A locking mechanism such as a ratchet mechanism can also be used to lock the end effectors. A surgical dissector can include gripping jaws having a curved profile or an angled elongate shaft to minimize tool interference and maximize visibility within a procedure site.Type: GrantFiled: October 11, 2010Date of Patent: August 25, 2015Assignee: Applied Medical Resources CorporationInventors: Arkadiusz A. Strokosz, David T. Okihisa, Steven E. Decker, Phillip DeAlday, Scott V. Taylor, Henry Kahle
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Publication number: 20140100601Abstract: A surgical instrument can comprise an elongate tube including a camming rod and an actuation mechanism operably connected to the camming rod; a first jaw spine having a first cam slot; and a second jaw spine having a second cam slot, the second jaw spine pivotally connected to the first jaw spine at a common pivot pin connected to the elongate tube. A camming pin rides along first and second interior camming surfaces and closes the jaw spines when the camming rod moves proximally. When the camming rod moves distally, a camming projection rides on first and second exterior camming surfaces on proximal sides of the first and second jaw spines and opens the jaw spines. One camming surface on each jaw spine facilitates closing the jaw spines while the other camming surface on each jaw spine facilitates opening the jaw spines. These two camming surfaces can be widely separated.Type: ApplicationFiled: September 30, 2013Publication date: April 10, 2014Applicant: Applied Medical Resources CorporationInventors: Russell E. Ahlberg, Scott V. Taylor, David T. Okihisa, Gregory I. Bak-Boychuk, Emil Karapetian, John Stout
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Patent number: 8597250Abstract: A stability assembly for a trocar cannula includes a conical stability member, a base, and a cannula retention member. The base has a passage defining an inner surface, and a constriction in the passage. The cannula retention member is rotatable within the passage, and advancement of the cannula retention member over the constriction reduces the inner diameter of the passage to restrain a cannula in the passage. Various latch mechanisms including interface surfaces on the base and the cannula retention member can be used in the stability assembly to secure the stability assembly around a cannula. Various conical stability members can be used in the stability assembly.Type: GrantFiled: April 24, 2012Date of Patent: December 3, 2013Assignee: Applied Medical Resources CorporationInventors: David T. Okihisa, Russell E. Ahlberg, Gary M. Johnson, Jeremy J. Albrecht, Michael L. Michaud, Benjamin A. Gianneschi
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Patent number: 8590428Abstract: A laparoscopic scissors, comprising a pair of blades connected at a pivot, each of the blades having a length, a tip portion, a body portion, an outer surface, an inner surface and a cutting edge is provided. The tip portion may have a first body thickness and the body portion may have a second body thickness different from the first body thickness. During the cutting operation, the blades progressively move over each other to provide a point contact along the cutting edges. In another aspect of the invention, a process of manufacturing the pair of scissors of the invention is disclosed, comprising the steps of forming the blades into a desired shape with wire EDM processes from a pre-hardened block of material, and sharpening the cutting edges of the blades.Type: GrantFiled: September 1, 2009Date of Patent: November 26, 2013Assignee: Applied Medical Resources CorporationInventors: Russell E. Ahlberg, Gary M. Johnson, David T. Okihisa
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Patent number: 8545534Abstract: A surgical instrument comprising an elongate tube extending along an axis includes an actuation mechanism; a first jaw spine; and a second jaw spine the second jaw spine pivotally connected to the first jaw spine at a common pivot pin to open and close the jaw spines in response to movement of the actuation mechanism. The jaw spines can be formed of a metallic material and are overmolded with an atraumatic plastic material. By overmolding the plastic onto the metal spine, an atraumatic outer surface can be formed of the plastic material along with a high degree of detail.Type: GrantFiled: January 26, 2009Date of Patent: October 1, 2013Assignee: Applied Medical Resources CorporationInventors: Russell E. Ahlberg, Scott V. Taylor, David T. Okihisa, Gregory I Bak-Boychuk, Emil Karapetian, John Stout
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Publication number: 20120209205Abstract: A stability assembly for a trocar cannula includes a conical stability member, a base, and a cannula retention member. The base has a passage defining an inner surface, and a constriction in the passage. The cannula retention member is rotatable within the passage, and advancement of the cannula retention member over the constriction reduces the inner diameter of the passage to restrain a cannula in the passage. Various latch mechanisms including interface surfaces on the base and the cannula retention member can be used in the stability assembly to secure the stability assembly around a cannula. Various conical stability members can be used in the stability assembly.Type: ApplicationFiled: April 24, 2012Publication date: August 16, 2012Applicant: Applied Medical Resources CorportionInventors: David T. Okihisa, Russell E. Ahlberg, Gary M. Johnson, Jeremy J. Albrecht, Michael L. Michaud, Benjamin A. Gianneschi
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Patent number: 8162893Abstract: A stability assembly for a trocar cannula includes a conical stability member, a base, and a cannula retention member. The base has a passage defining an inner surface, and a constriction in the passage. The cannula retention member is rotatable within the passage, and advancement of the cannula retention member over the constriction reduces the inner diameter of the passage to restrain a cannula in the passage. Various latch mechanisms including interface surfaces on the base and the cannula retention member can be used in the stability assembly to secure the stability assembly around a cannula. Various conical stability members can be used in the stability assembly.Type: GrantFiled: January 15, 2009Date of Patent: April 24, 2012Assignee: Applied Medical Resources CorporationInventors: David T. Okihisa, Russell E. Ahlberg, Gary M. Johnson, Jeremy J. Albrecht, Michael L. Michaud, Benjamin A. Gianneschi
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Publication number: 20110093005Abstract: Surgical tools that can be used in single port laparoscopic procedures can include a low-profile handle assembly to minimize tool interference adjacent the incision site. For example, a handle assembly for a surgical instrument can have a generally in-line configuration extending linearly along a central longitudinal axis of an elongate shaft of the instrument. A linkage mechanism including a trigger, an actuation link, and an actuation shaft can be positioned within the in-line handle. The linkage mechanism can be pivoted between an open position in which end effectors of the instrument are open and a toggle position in which the end effectors are locked closed. A locking mechanism such as a ratchet mechanism can also be used to lock the end effectors. A surgical dissector can include gripping jaws having a curved profile or an angled elongate shaft to minimize tool interference and maximize visibility within a procedure site.Type: ApplicationFiled: October 11, 2010Publication date: April 21, 2011Applicant: Applied Medical Resources CorporationInventors: Arkadiusz A. Strokosz, David T. Okihisa, Steven E. Decker, Phillip DeAlday, Scott V. Taylor, Henry Kahle
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Publication number: 20100005929Abstract: The invention is directed to a pair of laparoscopic scissors, comprising a pair of blades connected at a pivot, each of the blades having a length, a tip portion, a body portion, an outer surface, an inner surface and a cutting edge, the cutting edge forming an angle with the outer surface along the length of the blade such that tension during a cutting operation at the tip portion is about the same as tension at the body portion during the cutting operation. The angle formed may be greater at the tip portion which continuously decreases over the length of the blade. The tip portion may have a first body thickness and the body portion may have a second body thickness different from the first body thickness. During the cutting operation, the blades progressively move over each other to provide a point contact along the cutting edges.Type: ApplicationFiled: September 1, 2009Publication date: January 14, 2010Applicant: Applied Medical Resources CorporationInventors: Russell E. Ahlberg, Gary M. Johnson, David T. Okihisa
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Publication number: 20090182282Abstract: A stability assembly for a trocar cannula includes a conical stability member, a base, and a cannula retention member. The base has a passage defining an inner surface, and a constriction in the passage. The cannula retention member is rotatable within the passage, and advancement of the cannula retention member over the constriction reduces the inner diameter of the passage to restrain a cannula in the passage. Various latch mechanisms including interface surfaces on the base and the cannula retention member can be used in the stability assembly to secure the stability assembly around a cannula. Various conical stability members can be used in the stability assembly.Type: ApplicationFiled: January 15, 2009Publication date: July 16, 2009Applicant: Applied Medical Resources CorporationInventors: David T. Okihisa, Russell E. Ahlberg, Gary M. Johnson, Jeremy J. Albrecht, Michael L. Michaud, Benjamin A. Gianneschi