Patents by Inventor Ellen Keysselitz
Ellen Keysselitz 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: 11957892Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.Type: GrantFiled: September 19, 2022Date of Patent: April 16, 2024Assignee: ABIOMED EUROPE GMBHInventors: Thorsten Siess, Walid Aboulhosn, Wolfgang Kerkhoffs, Ellen Keysselitz, Peter Skrodsky
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Publication number: 20230136681Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.Type: ApplicationFiled: September 19, 2022Publication date: May 4, 2023Applicant: Abiomed Europe GmbHInventors: Thorsten Siess, Walid Aboulhosn, Wolfgang Kerkhoffs, Ellen Keysselitz, Peter Skrodsky
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Publication number: 20230137197Abstract: This invention relates to an intravascular blood pump, comprising a pumping device with a pump casing having a primary blood flow inlet and a primary blood flow outlet which are hydraulically connected by a primary blood flow passage, a primary impeller with an upstream end and a downstream end being configured to convey a primary blood flow from the primary blood flow inlet to the primary blood flow outlet along the primary blood flow passage, a drive unit configured to rotate the primary impeller about an axis of rotation, an impeller bearing supporting the upstream end of the primary impeller, a central opening extending axially through the impeller bearing, and at least one secondary blood flow passage in the primary impeller, the at least one secondary blood flow passage having a secondary blood flow inlet in axial alignment with the central opening of the impeller bearing and each of the at least one secondary blood flow passage having a secondary blood flow outlet, wherein at least one secondary bloodType: ApplicationFiled: March 22, 2021Publication date: May 4, 2023Applicant: Abiomed Europe GmbHInventors: Wolfgang Kerkhoffs, Ellen Keysselitz
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Publication number: 20230105131Abstract: This invention relates to an intravascular blood pump, comprising a pumping device with a pump section and a drive section, wherein the pump section comprises a pump casing having a primary blood flow inlet and a primary blood flow outlet hydraulically connected by a primary passage and the drive section comprises a stator and a rotor rotatable about an axis of rotation and configured to rotate a primary impeller, the primary impeller being configured to convey a primary blood flow from the primary blood flow inlet to the primary blood flow outlet along the primary passage, the drive section further comprises an ancillary blood flow inlet and an ancillary blood flow outlet hydraulically connected by an ancillary passage extending through an axial gap between the rotor and the stator and an ancillary impeller arranged at a drive section end (DSE) of the rotor and rotatable about the axis of rotation along with the rotor, the ancillary impeller comprising one or more ancillary impeller vanes configured to conveType: ApplicationFiled: March 22, 2021Publication date: April 6, 2023Applicant: Abiomed Europe GmbHInventors: Wolfgang Kerkhoffs, Ellen Keysselitz
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Publication number: 20230091199Abstract: An intravascular blood pump for percutaneous insertion into a patient’s vasculature comprises a pumping device and a supply catheter. The pumping device comprises a pump section with a blood flow inlet, blood flow outlet, and impeller for conveying blood from the inlet to the outlet and further comprises a drive section connected to the pump section and adapted to drive the impeller. The supply line supplies the drive section with electric energy for driving the impeller. The supply catheter supplies electric energy for driving the impeller. The pump section is axially arranged between the drive section and the supply line. The pump section includes a flexibly bendable cannula, and electric lines are arranged across the cannula in a manner to prevent their rupture in the event that the cannula is subject to bending.Type: ApplicationFiled: February 2, 2021Publication date: March 23, 2023Applicant: Abiomed Europe GmbHInventors: Thorsten Siess, Wolfgang Kerkhoffs, Cristine Rodrigues-Brimmers, Ellen Keysselitz
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Publication number: 20230060284Abstract: An intravascular blood pump for percutaneous insertion into a patient's vasculature comprises a pumping device and a supply catheter. The pumping device comprises a pump section with a blood flow inlet, blood flow outlet, and impeller for conveying blood from the inlet to the outlet and further comprises a drive section connected to the pump section and adapted to drive the impeller. The supply line supplies the drive section with electric energy for driving the impeller. An anchoring structure is provided at a distal end region of the intravascular blood pump. A connecting catheter may be attached to the anchoring structure from distally in order to guide the intravascular blood pump through the patient's vasculature in a distal direction.Type: ApplicationFiled: February 2, 2021Publication date: March 2, 2023Applicant: Abiomed Europe GmbHInventors: Thorsten Siess, Wolfgang Kerkhoffs, Cristine Rodrigues-Brimmers, Ellen Keysselitz
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Patent number: 11478627Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.Type: GrantFiled: August 19, 2020Date of Patent: October 25, 2022Assignee: Abiomed Europe GmbHInventors: Thorsten Siess, Walid Aboulhosn, Wolfgang Kerkhoffs, Ellen Keysselitz, Peter Skrodsky
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Publication number: 20200376182Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.Type: ApplicationFiled: August 19, 2020Publication date: December 3, 2020Applicant: Abiomed Europe GmbHInventors: Thorsten Siess, Walid Aboulhosn, Wolfgang Kerkhoffs, Ellen Keysselitz, Peter Skrodsky
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Patent number: 10780208Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.Type: GrantFiled: August 3, 2016Date of Patent: September 22, 2020Assignee: ABIOMED EUROPE GMBHInventors: Thorsten Siess, Walid Aboulhosn, Wolfgang Kerkhoffs, Ellen Keysselitz, Peter Skrodsky
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Patent number: 10765788Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.Type: GrantFiled: September 7, 2018Date of Patent: September 8, 2020Assignee: Heartware, Inc.Inventors: Mustafa Ertan Taskin, Ellen Keysselitz, Wolfgang Kerkhoffs
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Patent number: 10213536Abstract: An implantable connector assembly (14) for communicating an element to an implantable device (12) within a patient (20) comprises a plug (16), a receptacle (18), and a pair of communication structures (72, 108). The plug (16) includes a plunger body (64). The receptacle (18) includes a sleeve (98) and a stopper (114). The sleeve (98) defines an opening (104), and the stopper (114) is resiliently mounted within the sleeve (98) to cover and fluidly seal the opening (104). The pair of communication structures (72, 108) is positioned respectively on the plunger body (64) and the sleeve (98). One of the communication structures (72, 108) connects to a source and the other communication structure (108, 72) connects to the implantable device (12). The plunger body (64) inserts into the sleeve (98) to displace the stopper (114) and couple the pair of communication structures (72, 108) for communication of the element therebetween.Type: GrantFiled: September 30, 2013Date of Patent: February 26, 2019Assignee: CircuLite, Inc.Inventors: Wolfgang Kerkhoffs, Ellen Keysselitz, J. Christopher Flaherty, Josef Weigand
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Publication number: 20190001034Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.Type: ApplicationFiled: September 7, 2018Publication date: January 3, 2019Inventors: Mustafa Ertan TASKIN, Ellen KEYSSELITZ, Wolfgang KERKHOFFS
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Patent number: 10080826Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.Type: GrantFiled: June 30, 2017Date of Patent: September 25, 2018Assignee: HeartWare, Inc.Inventors: Mustafa Ertan Taskin, Ellen Keysselitz, Wolfgang Kerkhoffs
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Publication number: 20180228953Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet, and an impeller arranged in said pump casing and rotatably supported in the pump casing by a bearing so as to be rotatable about an axis of rotation. The impeller has blades for conveying blood from the blood flow inlet to the blood flow outlet. The bearing comprises at least one stationary bearing portion coupled to the pump casing and having a stationary bearing surface that faces radially outwards. The bearing further comprises a rotating bearing surface interacting with the stationary bearing surface to form the bearing, wherein the rotating bearing surface faces radially inwards and is formed on an exposed radially inner edge of the blades. The blades are designed to draw blood deposit on the stationary bearing surface in a radially outward direction.Type: ApplicationFiled: August 3, 2016Publication date: August 16, 2018Inventors: Thorsten Siess, Walid Aboulhosn, Wolfgang Kerkhoffs, Ellen Keysselitz, Peter Skrodsky
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Publication number: 20180161487Abstract: The invention relates to a blood pump made of titanium with a measuring device for determining flow based on acoustic flow measurement methods, and a blood pump with a temperature sensor and/or a pressure sensor, and a system with a blood pump and an inlet cannula and/or an outlet connector and a method for producing a blood pump with a measuring device.Type: ApplicationFiled: January 20, 2017Publication date: June 14, 2018Inventors: Oliver Marseille, Wolfgang Kerkhoffs, Ellen Keysselitz
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Publication number: 20170296720Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.Type: ApplicationFiled: June 30, 2017Publication date: October 19, 2017Inventors: Mustafa Ertan TASKIN, Ellen KEYSSELITZ, Wolfgang KERKHOFFS
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Patent number: 9717832Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.Type: GrantFiled: January 6, 2015Date of Patent: August 1, 2017Assignee: HeartWave, Inc.Inventors: Mustafa Ertan Taskin, Ellen Keysselitz, Wolfgang Kerkhoffs
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Patent number: 9572916Abstract: The invention relates to a blood pump made of titanium with a measuring device for determining flow based on acoustic flow measurement methods, and a blood pump with a temperature sensor and/or a pressure sensor, and a system with a blood pump and an inlet cannula and/or an outlet connector and a method for producing a blood pump with a measuring device.Type: GrantFiled: September 25, 2013Date of Patent: February 21, 2017Assignee: CIRCULITE GMBHInventors: Oliver Marseille, Wolfgang Kerkhoffs, Ellen Keysselitz
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Publication number: 20160193396Abstract: An implantable blood pump includes an impeller rotatable about a rotational axis, having a body with a bottom surface at a downstream end and a central opening centered about the axis extending at least partially through the body from the bottom surface. A projecting element, e.g., a shaft, extends from below the bottom surface into or through the opening to support the impeller. The body can be configured to drive a primary downstream blood flow along an exterior of the body to beyond a peripheral edge of the bottom surface, and to provide a secondary downstream blood flow through the opening and along the bottom surface to beyond the peripheral edge, the secondary flow improving washing of a bearing surface.Type: ApplicationFiled: January 6, 2015Publication date: July 7, 2016Inventors: Mustafa Ertan Taskin, Ellen Keysselitz, Wolfgang Kerkhoffs
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Publication number: 20150335804Abstract: The invention relates to a blood pump made of titanium with a measuring device for determining flow based on acoustic flow measurement methods and a blood pump with a temperature sensor and/or a pressure sensor, and a system with a blood pump and an inlet cannula and/or an outlet connector and a method for producing a blood pump with a measuring device.Type: ApplicationFiled: September 25, 2013Publication date: November 26, 2015Applicant: CIRCULITE GMBHInventors: Oliver Marseille, Wolfgang Kerkhoffs, Ellen Keysselitz