Patents by Inventor Hester Chan
Hester Chan 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: 20230165598Abstract: The present disclosure provides a catheter for treating lesions in a body lumen, such as calcified lesions and occlusions in vasculature. The catheter can include a dual-layer electrode assembly having a first conductive sheath and a second conductive sheath arranged circumferentially therearound. In some implementations, a first conductive sheath can be a flat coil. When a voltage is applied across the conductive sheaths, current flows across an arcing region, for example, from the distal side edge of the first sheath to the distal side edge of the second sheath to produce shock waves and/or cavitation bubbles. As a treatment continues, the sheaths slowly erode at the arcing region where current flows between the sheaths. To increase the lifespan of the electrode assembly, the distal side edges of the sheaths may be shaped to promote erosion of the sheaths in a predetermined or semi-controlled pattern.Type: ApplicationFiled: November 29, 2022Publication date: June 1, 2023Inventors: Hoa D. NGUYEN, Anna-Elodie KERLO, Chi LONG, Hester CHAN, Huy PHAN, Leela GOEL, Tommy NGUYEN
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Publication number: 20210315623Abstract: A method of treating a bone of a patient includes identifying a portion of the patient to be protected. A cannula is provided that includes a shaft extending between opposite first and second end surfaces. The shaft incudes an inner surface defining a lumen. The cannula includes a scoop extending from the second end surface. The scoop includes an inner surface that is continuous with the inner surface of the shaft and an opposite outer surface. The cannula is inserted into the bone such that the outer surface of the scoop is positioned adjacent to the portion of the patient to be protected. A balloon is inserted into the cannula such that the balloon is positioned within the scoop. The balloon is inflated such that the balloon expands away from the scoop as the balloon is inflated and creates a void in the bone. Systems are disclosed.Type: ApplicationFiled: March 30, 2021Publication date: October 14, 2021Applicant: MEDTRONIC HOLDING COMPANY SÀRLInventors: HESTER CHAN, AMY L. ARTHUR, TREVOR T. SECK
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Patent number: 11109890Abstract: A kyphoplasty cannula includes a shaft extending between opposite first and second end surfaces. The shaft has an inner surface defining a lumen. The shaft has a first opening that extends through the first end surface and a second opening that extends through the second end surface. A scoop extends from the second end surface. The scoop has an arcuate inner surface that is continuous with the inner surface of the shaft an opposite outer surface. The scoop has a rib. Kits and methods of use are disclosed.Type: GrantFiled: January 25, 2018Date of Patent: September 7, 2021Assignee: KYPHON SARLInventors: Calin Druma, Samuel Bolosan, Hester Chan
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Patent number: 11013543Abstract: A method of treating a bone of a patient includes identifying a portion of the patient to be protected. A cannula is provided that includes a shaft extending between opposite first and second end surfaces. The shaft includes an inner surface defining a lumen. The cannula includes a scoop extending from the second end surface. The scoop includes an inner surface that is continuous with the inner surface of the shaft and an opposite outer surface. The cannula is inserted into the bone such that the outer surface of the scoop is positioned adjacent to the portion of the patient to be protected. A balloon is inserted into the cannula such that the balloon is positioned within the scoop. The balloon is inflated such that the balloon expands away from the scoop as the balloon is inflated and creates a void in the bone. Systems are disclosed.Type: GrantFiled: May 24, 2018Date of Patent: May 25, 2021Assignee: MEDTRONIC HOLDING COMPANY SARLInventors: Hester Chan, Amy L. Arthur, Trevor T. Seck
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Patent number: 10888364Abstract: A kyphoplasty cannula includes a shaft extending between opposite first and second end surfaces. The shaft includes an inner surface defining a lumen. The shaft includes a first opening that extends through the first end surface and a second opening that extends through the second end surface. A scoop extends from the second end surface. The scoop includes an arcuate surface that is continuous with the inner surface. Kits and methods of use are disclosed.Type: GrantFiled: January 2, 2018Date of Patent: January 12, 2021Assignee: MEDTRONIC HOLDING COMPANY SARLInventors: Neil Sasaki, Hester Chan, Mojan Goshayeshgar
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Publication number: 20190357955Abstract: A method of treating a bone of a patient includes identifying a portion of the patient to be protected. A cannula is provided that includes a shaft extending between opposite first and second end surfaces. The shaft includes an inner surface defining a lumen. The cannula includes a scoop extending from the second end surface. The scoop includes an inner surface that is continuous with the inner surface of the shaft and an opposite outer surface. The cannula is inserted into the bone such that the outer surface of the scoop is positioned adjacent to the portion of the patient to be protected. A balloon is inserted into the cannula such that the balloon is positioned within the scoop. The balloon is inflated such that the balloon expands away from the scoop as the balloon is inflated and creates a void in the bone. Systems are disclosed.Type: ApplicationFiled: May 24, 2018Publication date: November 28, 2019Inventors: Hester Chan, Amy L. Arthur, Trevor T. Seck
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Publication number: 20190223901Abstract: A kyphoplasty cannula includes a shaft extending between opposite first and second end surfaces. The shaft has an inner surface defining a lumen. The shaft has a first opening that extends through the first end surface and a second opening that extends through the second end surface. A scoop extends from the second end surface. The scoop has an arcuate inner surface that is continuous with the inner surface of the shaft an opposite outer surface. The scoop has a rib. Kits and methods of use are disclosed.Type: ApplicationFiled: January 25, 2018Publication date: July 25, 2019Inventors: Calin DRUMA, Samuel Bolosan, Hester Chan
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Publication number: 20190201066Abstract: A kyphoplasty cannula includes a shaft extending between opposite first and second end surfaces. The shaft includes an inner surface defining a lumen. The shaft includes a first opening that extends through the first end surface and a second opening that extends through the second end surface. A scoop extends from the second end surface. The scoop includes an arcuate surface that is continuous with the inner surface. Kits and methods of use are disclosed.Type: ApplicationFiled: January 2, 2018Publication date: July 4, 2019Inventors: Neil Sasaki, Hester Chan, Mojan Goshayeshgar
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Patent number: 9204915Abstract: A device includes an inflatable member extending between a first end and a second end. An inner surface of the inflatable member defines a first passageway in the first end and a chamber in the second end. An inner member is disposed in the first passageway and extends through the chamber. The inner member includes an inner surface defining a second passageway. A second end of the inflatable member is bonded to an outer surface of the inner member. A guide is member disposed in the second passageway. An outer member includes a first end having a projection including a threaded outer surface. The outer member includes an inner surface defining a third passageway having the inflatable member disposed therein. A cap includes a threaded inner surface that engages the threaded outer surface of the projection. Methods of use are provided.Type: GrantFiled: March 14, 2013Date of Patent: December 8, 2015Assignee: KYPHON SARLInventors: Amy L. Arthur, Hester Chan
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Publication number: 20140276868Abstract: A device includes an inflatable member extending between a first end and a second end. An inner surface of the inflatable member defines a first passageway in the first end and a chamber in the second end. An inner member is disposed in the first passageway and extends through the chamber. The inner member includes an inner surface defining a second passageway. A second end of the inflatable member is bonded to an outer surface of the inner member. A guide is member disposed in the second passageway. An outer member includes a first end having a projection including a threaded outer surface. The outer member includes an inner surface defining a third passageway having the inflatable member disposed therein. A cap includes a threaded inner surface that engages the threaded outer surface of the projection. Methods of use are provided.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: KYPHON SARLInventors: AMY L. ARTHUR, Hester Chan
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Publication number: 20140277211Abstract: A device includes an inflatable member extending along an axis between a first end having a first opening and a second end having a second opening. An inner surface of the inflatable member defines a first passageway in the first end and a chamber in the second end. An inner member is disposed in the first passageway and extends through the first and second openings. The inner member includes an inner surface defining a second passageway. A first end of the inner member includes a first opening and a second end of the inner member has a second opening. The second end of the inflatable member is bonded to an outer surface of the inner member. A guide member is disposed in the second passageway and extends through the first and second openings of the inner member. Methods of use are provided.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Applicant: KYPHON SARLInventors: AMY L. ARTHUR, HESTER CHAN
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Patent number: 8262609Abstract: An inflatable bone tamp for performing a minimally invasive surgical procedure includes an inflatable structure that exhibits an outwardly tapering expansion profile. The outward taper can beneficially allow the inflatable bone tamp to exert greater targeted force in difficult environments. For example, in a vertebra with a compression fracture, the outwardly tapering expansion profile of the inflatable bone tamp can result in greater lifting force being applied to the endplates of the vertebra, thereby increasing the likelihood of restoring the height lost due to the compression fracture.Type: GrantFiled: October 29, 2009Date of Patent: September 11, 2012Assignee: Kyphon SarlInventors: Warren C. Sapida, Bryan J. Auyoung, Hester Chan, Todd W. Jenkins
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Patent number: 8221349Abstract: An inflatable bone tamp for performing a minimally invasive surgical procedure includes an inflatable structure having at least three contiguous lobes, that when inflated, cause the inflatable structure to exhibits an outwardly tapering expansion profile. By forming the inflatable structure such that the reduced-diameter junction(s) between the lobes has a greater wall thickness then the adjacent lobes, the durability and abrasion-resistance of the inflatable bone tamp can be increased.Type: GrantFiled: March 11, 2010Date of Patent: July 17, 2012Assignee: Kyphon SarlInventors: Bryan J. Auyoung, Hester Chan, Warren C. Sapida, Todd W. Jenkins
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Publication number: 20110106184Abstract: An inflatable bone tamp for performing a minimally invasive surgical procedure includes an inflatable structure that exhibits an outwardly tapering expansion profile. The outward taper can beneficially allow the inflatable bone tamp to exert greater targeted force in difficult environments. For example, in a vertebra with a compression fracture, the outwardly tapering expansion profile of the inflatable bone tamp can result in greater lifting force being applied to the endplates of the vertebra, thereby increasing the likelihood of restoring the height lost due to the compression fracture.Type: ApplicationFiled: October 29, 2009Publication date: May 5, 2011Applicant: KYPHON SARLInventors: Warren C. Sapida, Bryan J. Auyoung, Hester Chan, Todd W. Jenkins
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Publication number: 20110106007Abstract: An inflatable bone tamp for performing a minimally invasive surgical procedure includes an inflatable structure having at least three contiguous lobes, that when inflated, cause the inflatable structure to exhibits an outwardly tapering expansion profile. By forming the inflatable structure such that the reduced-diameter junction(s) between the lobes has a greater wall thickness then the adjacent lobes, the durability and abrasion-resistance of the inflatable bone tamp can be increased.Type: ApplicationFiled: March 11, 2010Publication date: May 5, 2011Applicant: Kyphon SARLInventors: Bryan J. Auyoung, Hester Chan, Warren C. Sapida, Todd W. Jenkins