Patents by Inventor Andrew S. Lee
Andrew S. Lee 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: 11914435Abstract: A vibrorotational fluid flow actuator includes: a first vibrorotational component comprising a first body including an axis, a plurality of first legs extending from a bottom surface of first body in a direction of and at an angle to the axis, and a plurality of first blades extending from a respective side of the first body in a direction perpendicular to the axis, wherein when the first vibrorotational component is placed on a chassis, vibration of the chassis induces rotation of the body such that the blades and body rotate about the axis of the body thereby inducing fluid flow in a fluid surrounding the actuator.Type: GrantFiled: March 20, 2020Date of Patent: February 27, 2024Assignee: MERCURY MISSION SYSTEMS, LLCInventors: Andrew Kostrzewski, Kang S. Lee, Christopher LaMontagna
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Publication number: 20240058510Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.Type: ApplicationFiled: October 31, 2023Publication date: February 22, 2024Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Hancun Chen, Andrew S. Lee
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Publication number: 20240032938Abstract: A flat embolic braid having a first side comprising a first side surface, and a second side comprising a second side surface facing in an opposite direction than the first side surface, the braid having an elongated constrained configuration for being deployed through a delivery catheter, and a three-dimensional unconstrained configuration, wherein in the three-dimensional unconstrained configuration, the braid assumes a plurality of successive loops in which the braid is at least partially twisted between successive loops of the plurality, so that the first side surface faces externally of each loop, and the second side surface faces an interior of each loop, respectively, regardless of a change in direction and/or orientation of the braid.Type: ApplicationFiled: October 16, 2023Publication date: February 1, 2024Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Stephen Porter, Andrew S. Lee
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Patent number: 11819217Abstract: A flat embolic braid having a first side comprising a first side surface, and a second side comprising a second side surface facing in an opposite direction than the first side surface, the braid having an elongated constrained configuration for being deployed through a delivery catheter, and a three-dimensional unconstrained configuration, wherein in the three-dimensional unconstrained configuration, the braid assumes a plurality of successive loops in which the braid is at least partially twisted between successive loops of the plurality, so that the first side surface faces externally of each loop, and the second side surface faces an interior of each loop, respectively, regardless of a change in direction and/or orientation of the braid.Type: GrantFiled: August 10, 2020Date of Patent: November 21, 2023Assignees: Stryker Corporation, Stryker European Operations LimitedInventors: Stephen Porter, Andrew S. Lee
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Publication number: 20230277733Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.Type: ApplicationFiled: May 11, 2023Publication date: September 7, 2023Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Hancun Chen, Andrew S. Lee, Brent Gerberding
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Publication number: 20230201428Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.Type: ApplicationFiled: February 28, 2023Publication date: June 29, 2023Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Hancun Chen, Andrew S. Lee, Brent Gerberding
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Patent number: 11612678Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.Type: GrantFiled: May 11, 2020Date of Patent: March 28, 2023Assignees: Stryker Corporation, Stryker European Operations LimitedInventors: Hancun Chen, Andrew S. Lee, Brent Gerberding
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Publication number: 20230072224Abstract: A braided vaso-occlusive member formed out of first plurality of filaments interwoven with a second plurality of filaments, wherein filaments of the first plurality are helically wound in a first rotational direction along an elongate axis of the braided member, and filaments of the second plurality are wound in a second rotational direction opposite the first rotational direction, such that filaments of the first plurality cross over and/or under filaments of the second plurality at each of a plurality cross-over locations axially spaced along the elongate axis of the braided member, wherein at each cross-over location, the filaments of the first plurality cross over at least two consecutive filaments of the second plurality, then cross under only a single filament of the second plurality, and then cross over at least two additional consecutive filaments of the second plurality.Type: ApplicationFiled: November 9, 2022Publication date: March 9, 2023Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Andrew S. Lee, Mark Phung, Hancun Chen, Timothy Odell
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Patent number: 11524328Abstract: A braided vaso-occlusive member formed out of first plurality of filaments interwoven with a second plurality of filaments, wherein filaments of the first plurality are helically wound in a first rotational direction along an elongate axis of the braided member, and filaments of the second plurality are wound in a second rotational direction opposite the first rotational direction, such that filaments of the first plurality cross over and/or under filaments of the second plurality at each of a plurality cross-over locations axially spaced along the elongate axis of the braided member, wherein at each cross-over location, the filaments of the first plurality cross over at least two consecutive filaments of the second plurality, then cross under only a single filament of the second plurality, and then cross over at least two additional consecutive filaments of the second plurality.Type: GrantFiled: March 19, 2020Date of Patent: December 13, 2022Assignee: Stryker CorporationInventors: Andrew S. Lee, Mark Phung, Hancun Chen, Timothy Odell
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Publication number: 20220370078Abstract: A vaso-occlusive device, includes: a vaso-occlusive structure configured for implantation in an aneurysm sac, the vaso-occlusive structure having a delivery configuration when restrained within a delivery catheter and having a deployed configuration when released from the delivery catheter into the aneurysmal sac, at least a portion of the vaso-occlusive structure being composed of a AuPtW (gold-platinum-tungsten) alloy; wherein the AuPtW alloy comprises platinum within a range between 25% and 40% by weight, and wherein the AuPtW alloy comprises tungsten within a range between 0.01% and 10% by weight.Type: ApplicationFiled: June 22, 2022Publication date: November 24, 2022Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Hancun Chen, Andrew S. Lee
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Patent number: 11484629Abstract: Implantable medical devices, such as embolic devices and blood flow filters are disclosed, the devices being made at least partially out of a platinum-tungsten alloy, wherein a percentage of tungsten in the alloy is equal to or greater than about 10% of the alloy by weight.Type: GrantFiled: September 11, 2019Date of Patent: November 1, 2022Assignee: Stryker CorporationInventors: Hancun Chen, Andrew S. Lee
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Publication number: 20210137526Abstract: An embolic device for placement in a body lumen, includes: a first segment having a first linear configuration when located inside a catheter, the first segment being configured to form a first three-dimensional structure when outside the catheter, wherein the first three-dimensional structure defines a cavity; and a second segment extending from the first segment, the second segment having a second linear configuration when located inside the catheter, the second segment being configured to form a second three-dimensional structure when outside the catheter; wherein the cavity of the first three-dimensional structure is configured to accommodate at least a majority of the second three-dimensional structure.Type: ApplicationFiled: November 11, 2019Publication date: May 13, 2021Inventors: Andrew S. Lee, Clifford Teoh, Hancun Chen, Jinhoon Park
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Publication number: 20210069387Abstract: An implantable medical device includes an elongate member having a cross-sectional dimension that is less than 0.00085 inch, wherein the elongate member is made from a material comprising a platinum-tungsten alloy having a percentage of tungsten that is at least 10% by weight or alternatively the implantable medical device includes an elongate member made from a material comprising an alloy containing rhenium.Type: ApplicationFiled: May 11, 2020Publication date: March 11, 2021Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Hancun Chen, Andrew S. Lee, Brent Gerberding
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Publication number: 20210069386Abstract: Implantable medical devices, such as embolic devices and blood flow filters are disclosed, the devices being made at least partially out of a platinum-tungsten alloy, wherein a percentage of tungsten in the alloy is equal to or greater than about 10% of the alloy by weight.Type: ApplicationFiled: September 11, 2019Publication date: March 11, 2021Inventors: Hancun Chen, Andrew S. Lee
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Patent number: 10893870Abstract: A vaso-occlusive device includes an inner braided member having an unconstrained deployed configuration and a constrained delivery configuration. The inner braided member includes a first plurality of filaments made of a first material composition, where a pair of filaments of the first plurality defines a first braid angle when the inner braided member is in the deployed configuration. The device also includes an outer braided member disposed at least partially around the inner braided member, and having an unconstrained deployed configuration and a constrained delivery configuration. The outer braided member includes a second plurality of filaments made of a second material composition different from the first material, where the first material has a greater radiopacity than the second material. A pair of filaments of the second plurality defines a second braid angle, substantially equal to the first braid angle, when the outer braided member is in the deployed configuration.Type: GrantFiled: May 3, 2018Date of Patent: January 19, 2021Assignee: Stryker CorporationInventors: Jiaxu Wang, Andrew S. Lee
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Publication number: 20200367901Abstract: A flat embolic braid having a first side comprising a first side surface, and a second side comprising a second side surface facing in an opposite direction than the first side surface, the braid having an elongated constrained configuration for being deployed through a delivery catheter, and a three-dimensional unconstrained configuration, wherein in the three-dimensional unconstrained configuration, the braid assumes a plurality of successive loops in which the braid is at least partially twisted between successive loops of the plurality, so that the first side surface faces externally of each loop, and the second side surface faces an interior of each loop, respectively, regardless of a change in direction and/or orientation of the braid.Type: ApplicationFiled: August 10, 2020Publication date: November 26, 2020Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Stephen Porter, Andrew S. Lee
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Publication number: 20200215599Abstract: A braided vaso-occlusive member formed out of first plurality of filaments interwoven with a second plurality of filaments, wherein filaments of the first plurality are helically wound in a first rotational direction along an elongate axis of the braided member, and filaments of the second plurality are wound in a second rotational direction opposite the first rotational direction, such that filaments of the first plurality cross over and/or under filaments of the second plurality at each of a plurality cross-over locations axially spaced along the elongate axis of the braided member, wherein at each cross-over location, the filaments of the first plurality cross over at least two consecutive filaments of the second plurality, then cross under only a single filament of the second plurality, and then cross over at least two additional consecutive filaments of the second plurality.Type: ApplicationFiled: March 19, 2020Publication date: July 9, 2020Applicants: STRYKER CORPORATION, STRYKER EUROPEAN OPERATIONS LIMITEDInventors: Andrew S. Lee, Mark Phung, Hancun Chen, Timothy Odell
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Publication number: 20200170647Abstract: A vaso-occlusive device comprises an elongate vaso-occlusive structure configured for implantation in an aneurysm sac. The vaso-occlusive structure has a delivery configuration when restrained within a delivery catheter and has a deployed configuration when released from the delivery catheter into the aneurysmal sac. At least a portion of the vaso-occlusive device is composed of a gold-platinum (AuPt) alloy.Type: ApplicationFiled: December 4, 2018Publication date: June 4, 2020Inventors: Hancun CHEN, Andrew S. LEE
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Publication number: 20190336138Abstract: A vaso-occlusive device includes an inner braided member having an unconstrained deployed configuration and a constrained delivery configuration. The inner braided member includes a first plurality of filaments made of a first material composition, where a pair of filaments of the first plurality defines a first braid angle when the inner braided member is in the deployed configuration. The device also includes an outer braided member disposed at least partially around the inner braided member, and having an unconstrained deployed configuration and a constrained delivery configuration. The outer braided member includes a second plurality of filaments made of a second material composition different from the first material, where the first material has a greater radiopacity than the second material. A pair of filaments of the second plurality defines a second braid angle, substantially equal to the first braid angle, when the outer braided member is in the deployed configuration.Type: ApplicationFiled: May 3, 2018Publication date: November 7, 2019Inventors: Jiaxu Wang, Andrew S. Lee
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Publication number: 20170354402Abstract: A braided vaso-occlusive member formed out of first plurality of filaments interwoven with a second plurality of filaments, wherein filaments of the first plurality are helically wound in a first rotational direction along an elongate axis of the braided member, and filaments of the second plurality are wound in a second rotational direction opposite the first rotational direction, such that filaments of the first plurality cross over and/or under filaments of the second plurality at each of a plurality cross-over locations axially spaced along the elongate axis of the braided member, wherein at each cross-over location, the filaments of the first plurality cross over at least two consecutive filaments of the second plurality, then cross under only a single filament of the second plurality, and then cross over at least two additional consecutive filaments of the second plurality.Type: ApplicationFiled: June 8, 2017Publication date: December 14, 2017Inventors: Andrew S. Lee, Mark Phung, Hancun Chen, Timothy Odell