Patents by Inventor Thorsten Siess

Thorsten Siess 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).

  • Rotor for a fluid pump, and method and mold for manufacturing same
    Patent number: 10935038
    Abstract: Disclosed is a rotor for a compressible fluid pump, in particular a blood pump that can be introduced into a patient's body through a blood vessel; said rotor comprises one or more impeller elements, is compressible and expansible between an expanded state and a compressed state, is made at least in part of a fiber-reinforced plastic material, is provided for rotating about an axis of rotation, and is characterized in that in the expanded state of the rotor, a first percentage, i.e. more than 30%, in particular more than 50%, of the fibers runs substantially straight between the first end thereof lying closest to the axis of rotation and a second end lying further away from the axis of rotation. According to the invention, the rotor retains its shape very well even when subjected to repeated mechanical stress.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: March 2, 2021
    Assignee: ECP ENTWICKLUNGSGESELLSCHAFT MBH
    Inventor: Thorsten Siess
  • ROTOR FOR A FLUID PUMP AND METHOD AND MOLD FOR THE PRODUCTION THEREOF
    Publication number: 20210054848
    Abstract: The invention relates to a rotor for a compressible fluid pump, in particular a blood pump that can be introduced through a blood vessel into a patient's body, wherein said rotor comprises one or more conveying elements (15), is compressible and expandable between a first compressed state and a second radially expanded state, is made at least partially from a plastic reinforced with reinforcing elements, in particular fibers (10, 11, 13, 18, 19, 55, 56, 62, 63) and is provided for rotation about an axis of rotation (14). According to the invention, the rotor is tensioned in the first, compressed state and free from external stresses in the second, expanded state. A third state exists, which the rotor (42) occupies in the operating state under load. The reinforcing elements, in particular fibers, extend in the rotor in the third state at least in sections in a stretched manner.
    Type: Application
    Filed: September 1, 2020
    Publication date: February 25, 2021
    Applicant: ECP Entwicklungsgesellschaft Mbh
    Inventors: Thorsten Siess, Mario Scheckel
  • Methods and systems for an external drive unit for an implantable heart assist pump
    Patent number: 10926013
    Abstract: The application relates to an external drive unit (7) for an implantable heart assist pump. The proposed drive unit (7) comprises a motor (35) for driving the heart assist pump, wherein the motor (35) is connectable to the heart assist pump via a transcutaneous drive shaft (3). The drive unit (7) further comprises a heat spreader (19) comprising a contact surface configured to contact and/or directly contact and/or lie flat against a skin of a patient. The contact surface is connected or connectable with the motor (35) in a thermally-conductive manner to transfer heat generated by the motor (35) to tissue of the patient.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: February 23, 2021
    Assignee: ECP ENTWICKLUNGSGESELLSCHAFT MBH
    Inventors: Jörg Schumacher, Gerd Spanier, Thorsten Siess, Maxim Daschewski, Jim-Po Wang
  • BLOOD PUMP
    Publication number: 20210038785
    Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet connected by a passage, and an impeller arranged in said pump casing so as to be rotatable about an axis of rotation. The impeller is provided with blades sized and shaped for conveying blood along the passage from the blood flow inlet to the blood flow outlet, and is rotatably supported in the pump casing by a first bearing at a first axial end of the impeller and a second bearing axially spaced apart from the first bearing. The first bearing comprises a projection extending along the axis of rotation and connected to one of the impeller and the pump casing and a cavity in the other one of the impeller and the pump casing, the projection comprising an enlarged portion that engages the cavity such that the first bearing and the second bearing are arranged to bear axial forces in the same axial direction.
    Type: Application
    Filed: October 20, 2020
    Publication date: February 11, 2021
    Applicant: Abiomed Europe Gmbh
    Inventors: Thorsten Siess, Walid Aboulhosn
  • BLOOD PUMP
    Publication number: 20210023282
    Abstract: A blood pump comprises a pump casing a blood flow inlet and a blood flow outlet connected by a passage, and an impeller. The impeller comprises blades configured to convey blood from the blood flow inlet to the blood flow outlet, the impeller being supported in the pump casing by at least one contact-type bearing comprising a surface of the impeller facing a surface of the pump casing. At least one wash out channel extends through the impeller and is in fluid connection with the passage via a first opening and with the bearing via a second opening. The wash out channel is operatively associated with a secondary pump for pumping blood through the wash out channel towards the bearing. The secondary pump is formed at least partially by said at least one wash out channel extending through the impeller along a direction having at least one tangential directional component.
    Type: Application
    Filed: August 11, 2020
    Publication date: January 28, 2021
    Inventors: Thorsten Siess, Walid Aboul-Hosn
  • Blood pump with filter
    Patent number: 10898629
    Abstract: The invention relates to an intravascular blood pump. The blood pump comprises a pump section having a proximal portion with a blood flow inlet and a distal portion with a blood flow outlet and an impeller for causing blood to flow into the blood flow inlet and towards the blood flow outlet. The blood pump further comprises at least one filter connected to the proximal portion of the pump section and arranged with respect to the blood flow inlet so as to filter the blood before it enters the blood flow inlet. The filter may comprise an expandable mesh structure made of a shape-memory material.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: January 26, 2021
    Assignee: ABIOMED EUROPE GMBH
    Inventors: Thorsten Siess, Walid Aboulhosn, Christoph Nix
  • INTRAVASCULAR BLOOD PUMP WITH CERAMIC INNER SLEEVE
    Publication number: 20210015982
    Abstract: An intravascular blood pump having a pumping device including an impeller and an electric motor for driving the impeller. A rotor of the electric motor is disposed inside a cavity in the pumping device and rotatable about an axis of rotation and coupled to the impeller so as to be able to cause rotation of the impeller. The cavity is formed by an inner sleeve made of a ceramic material. At least a portion of the stator of the electric motor, in particular a coil winding, may be arranged on the ceramic inner sleeve.
    Type: Application
    Filed: March 20, 2019
    Publication date: January 21, 2021
    Inventors: Wolfgang Kerkhoffs, Thorsten Siess
  • INTRAVASCULAR BLOOD PUMP
    Publication number: 20210015981
    Abstract: An intravascular blood pump having a rotatable shaft carrying an impeller and a housing with an opening through which the shaft extends with the impeller positioned outside the housing. The shaft and the housing have surfaces forming a circumferential gap which converges towards the impeller-side end of the gap and which has a minimum gap width of preferably no more than 5 ?m, more preferably no more than 2 ?m.
    Type: Application
    Filed: March 21, 2019
    Publication date: January 21, 2021
    Inventors: Frank Kirchhoff, Thorsten Siess, Wolfgang Kerkhoffs
  • METHOD OF MANUFACTURING A BLOOD PUMP
    Publication number: 20210001027
    Abstract: An intravascular blood pump comprises a pumping device including an impeller and an electric motor for driving the impeller. A rotor of the electric motor is rotatable about an axis of rotation and coupled to the impeller so as to be able to cause rotation of the impeller. An outer sleeve forms a casing of the pumping device, wherein stator components are fixed inside the outer sleeve by means of a casting compound. In a method of manufacturing the blood pump the stator components are placed on a molding base, including the outer sleeve to thereby form an interspace between the molding base and the outer sleeve in which the stator components are disposed. The casting compound is then injected into the interspace via the molding base to fix the stator components inside the outer sleeve. The outer sleeve preferably comprises a magnetically conductive material to form a yoke of the electric motor.
    Type: Application
    Filed: March 22, 2019
    Publication date: January 7, 2021
    Inventors: Frank Kirchhoff, Josef Penners, Thorsten Siess, Werner Carell, Wolfgang Kerkhoffs
  • Sheath for sealed access to a vessel
    Patent number: 10881845
    Abstract: A sheath for producing a fully sealed access to the interior of a vessel of an animal or human body comprises a base sheath having a tubular body defining a pass-through channel. The base sheath is adapted to be inserted into the vessel through a vessel aperture. A wall of the tubular body of the base sheath has a through channel. This channel extends in the wall from the distal end towards the proximal end. The channel can be present separately from the pass-through channel of the base sheath or can form a sideways extension of the pass-through channel, at least at the distal end. Such through channel is adapted to conduct blood from the vessel to the proximal end of the sheath when the sheath has been inserted into a vessel.
    Type: Grant
    Filed: July 6, 2015
    Date of Patent: January 5, 2021
    Assignee: ABIOMED EUROPE GMBH
    Inventors: Thorsten Siess, Christoph Nix, Frank Kirchhoff, Patrick Hunziker
  • Purge-free miniature rotary pump
    Patent number: 10881769
    Abstract: Methods and systems are provided for the circulation of blood using a purge-free miniature pump. In one embodiment, a pump is provided that may comprise a housing including a rotor and a stator within a drive unit. In this embodiment, the pump may establish a primary blood flow through the space between the drive unit and the housing and a secondary blood flow between the rotor and stator. In another embodiment, a pump establishes a primary blood flow outside the housing and a secondary blood flow between the rotor and stator. In yet another embodiment, a method is provided for introducing the pump into the body and circulating blood using the pump.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: January 5, 2021
    Assignee: ABIOMED, INC.
    Inventor: Thorsten Siess
  • BLOOD PUMP
    Publication number: 20200405933
    Abstract: 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 so as to be rotatable about an axis of rotation. The impeller has blades sized and shaped for conveying blood from the blood flow inlet to the blood flow outlet. The blood pump also has an outflow cannula having an upstream end portion, a downstream end portion and an intermediate portion extending between the upstream end portion and the downstream end portion. The upstream end portion of the outflow cannula is connected to the pump casing such that blood is conveyed from the blood flow outlet of the pump casing into and through the intermediate portion of the outflow cannula towards the downstream end portion of the outflow cannula, wherein the downstream end portion has a blood flow outlet through which blood can exit the outflow cannula.
    Type: Application
    Filed: September 10, 2020
    Publication date: December 31, 2020
    Inventors: Thorsten Siess, Walid Aboulhosn
  • EXTERNAL DRIVE UNIT FOR AN IMPLANTABLE HEART ASSIST PUMP
    Publication number: 20200390952
    Abstract: The application relates to an external drive unit (7) for an implantable heart assist pump. The proposed drive unit (7) comprises a motor (35) for driving the heart assist pump, wherein the motor (35) is connectable to the heart assist pump via a transcutaneous drive shaft (3). The drive unit (7) further comprises a heat spreader (19) comprising a contact surface configured to contact and/or directly contact and/or lie flat against a skin of a patient. The contact surface is connected or connectable with the motor (35) in a thermally-conductive manner to transfer heat generated by the motor (35) to tissue of the patient.
    Type: Application
    Filed: April 6, 2018
    Publication date: December 17, 2020
    Inventors: Joerg Schumacher, Gerd Spanier, Thorsten Siess, Maxim Daschewski, Jim-Po Wang
  • BLOOD PUMP
    Publication number: 20200376182
    Abstract: 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: Application
    Filed: August 19, 2020
    Publication date: December 3, 2020
    Applicant: Abiomed Europe GmbH
    Inventors: Thorsten Siess, Walid Aboulhosn, Wolfgang Kerkhoffs, Ellen Keysselitz, Peter Skrodsky
  • Blood pump
    Patent number: 10842921
    Abstract: A blood pump comprises a pump casing having a blood flow inlet and a blood flow outlet connected by a passage, and an impeller arranged in said pump casing so as to be rotatable about an axis of rotation. The impeller is provided with blades sized and shaped for conveying blood along the passage from the blood flow inlet to the blood flow outlet, and is rotatably supported in the pump casing by a first bearing at a first axial end of the impeller and a second bearing axially spaced apart from the first bearing. The first bearing comprises a projection extending along the axis of rotation and connected to one of the impeller and the pump casing and a cavity in the other one of the impeller and the pump casing, the projection comprising an enlarged portion that engages the cavity such that the first bearing and the second bearing are arranged to bear axial forces in the same axial direction.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: November 24, 2020
    Assignee: Abiomed Europe GmbH
    Inventors: Thorsten Siess, Walid Aboul-Hosn
  • METHOD AND APPARATUS FOR CALIBRATION AND USE IN ESTIMATING BLOOD FLOW IN AN INTRAVASCULAR BLOOD PUMP
    Publication number: 20200360582
    Abstract: A method and an apparatus for use in estimating blood flow in an intravascular blood pump comprise retrieving reference data from a set of reference data obtained in a test environment. The set of reference data comprises, for at least one motor speed at different pump loads, including a first pump load, both a reference motor current (I) of a motor driving the blood pump and an amount of fluid flow through the blood pump. After placement of the blood pump in the patient, a patient-specific motor current for said motor speed at said first pump load is measured, and a motor current deviation value (?I) is calculated from the reference motor current (I) at said first pump load and patient-specific motor current. Finally, the motor current deviation value ?I is used for estimating a patient-specific blood flow amount through the blood pump.
    Type: Application
    Filed: January 8, 2019
    Publication date: November 19, 2020
    Inventors: Thorsten Siess, Christoph Nix, Stefan Bönsch
  • Introducer set
    Patent number: 10835651
    Abstract: An introducer set (1) for providing vascular access in a patient's body comprises an introducer sheath (10) and a dilator (20). The introducer sheath (10) has a tubular body (11) made of flexible material with a distal portion (12), a proximal portion (13) and an inner surface, the proximal portion (13) being configured to be inserted into a patients vessel to allow a medical device (100) to be inserted through the introducer sheath (10) into the patient's vessel. At least one of the dilator (20) and the introducer sheath (10) comprises a stiffening structure (25) imparting stiffness to the tubular body (11) of the introducer sheath (10), wherein said stiffening structure (25) can be released, removed or otherwise deactivated.
    Type: Grant
    Filed: January 7, 2016
    Date of Patent: November 17, 2020
    Assignee: ABIOMED EUROPE GMBH
    Inventors: Adrian Moran, Thorsten Siess, Walid Aboulhosn
  • Lockable quick coupling
    Patent number: 10814121
    Abstract: A simply lockable quick coupling for releasably connecting a hose to an implantable apparatus, comprises a first attachment piece that can be connected to the hose and a second attachment piece that can be connected to the apparatus, wherein the attachment pieces can be rotated relative to each other in the locked state.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: October 27, 2020
    Assignee: ABIOMED EUROPE GMBH
    Inventors: Thorsten Siess, Gerd Spanier
  • BLOOD PUMP
    Publication number: 20200330666
    Abstract: An intravascular blood pump (1) comprises a pump casing (2) having a blood flow inlet (21) and a blood flow outlet (22), and an impeller (3) arranged in said pump casing (2) so as to be rotatable about an axis of rotation, wherein the impeller (3) has blades (31) sized and shaped for conveying blood from the blood flow inlet (21) to the blood flow outlet (22). The blood pump (1) further comprises a drive unit (104) for rotating the impeller (3), the drive unit (104) comprising a plurality of posts (140) arranged about the axis of rotation (10). Coil windings (47) around the posts are sequentially controllable so as to create a rotating magnetic field. The shaft portion (141) of each of the posts (140) comprises a soft magnetic material which is discontinuous in cross-section transverse to the longitudinal axis of the respective post (140).
    Type: Application
    Filed: September 14, 2018
    Publication date: October 22, 2020
    Inventors: Thorsten Siess, Wolfgang Kerkhoffs, Peter Skrodsky, Jimpo Wang, Marius Grauwinkel
  • Blood pump with micromotor
    Patent number: 10808704
    Abstract: The invention relates to a micromotor (10), the stator of which contains a back iron jacket (18). Said back iron jacket consists of a continuous unslotted sleeve consisting of a metal alloy that contains ferritic iron as the main constituent, up to 30% chromium and preferably aluminium and yttrium oxide. Electric conductivity is reduced by the oxidation of the aluminium. The yttrium oxide performs the same function. The reduced electric conductivity suppresses eddy currents to a great extent. The back iron jacket (18) has a high magnetic conductivity with a small wall thickness, thus increasing the electrical output for a motor with a small diameter.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: October 20, 2020
    Assignee: ABIOMED EUROPE GMBH
    Inventors: Thorsten Siess, Frank Kirchhoff