Patents by Inventor Hans-Hinrich Sievers
Hans-Hinrich Sievers 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: 11083574Abstract: A prosthetic heart valve includes a valve frame (2), on which a plurality of valve leaflets (8) are fixed, and a fastening area for fastening in a blood vessel, which axially adjoins the valve frame (2). A stabilizing ring (14) is arranged in the fastening area. The stabilizing ring (14) defines a predetermined shape and a predetermined diameter of the fastening area and has at least one predetermined expansion point (22), whereby it is possible to expand the stabilizing ring (14) by an action of radial force on an inner circumference.Type: GrantFiled: March 23, 2016Date of Patent: August 10, 2021Inventor: Hans-Hinrich Sievers
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Patent number: 10610352Abstract: A heart valve prosthesis includes a valve frame (2), on which frame several valve leaflets (8) are fastened, as well as a fastening region which connects axially onto the valve frame (2), for fastening in a blood vessel. The fastening region includes a stabilizing ring (14, 14?, 14?, 14??, 14??) which defines a given shape and a given diameter and is connected to the valve frame (2) is a force-decoupled manner.Type: GrantFiled: November 16, 2015Date of Patent: April 7, 2020Assignee: SIEVERS, HANS-HINRICH, DR.Inventor: Hans-Hinrich Sievers
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Patent number: 10507100Abstract: A heart valve prosthesis includes a downstream first axial end (6) and an upstream second axial end (8) and a stitching ring (10) extending in an arcuate manner for stitching in a blood vessel. The arcuate course of the stitching ring (10) is formed by three arcs (12) and three transition regions (14). At each end of two of the arcs (12) transition into each other. The stitching ring (10) has a movable tab (18) at at least one of the three transition regions (14). The movable tab (18) can be selectively directed toward the first axial end (6) or folded over toward the second axial end (8).Type: GrantFiled: March 23, 2016Date of Patent: December 17, 2019Inventor: Hans-Hinrich Sievers
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Publication number: 20180078366Abstract: A prosthetic heart valve includes a valve frame (2), on which a plurality of valve leaflets (8) are fixed, and a fastening area for fastening in a blood vessel, which axially adjoins the valve frame (2). A stabilizing ring (14) is arranged in the fastening area. The stabilizing ring (14) defines a predetermined shape and a predetermined diameter of the fastening area and has at least one predetermined expansion point (22), whereby it is possible to expand the stabilizing ring (14) by an action of radial force on an inner circumference.Type: ApplicationFiled: March 23, 2016Publication date: March 22, 2018Inventor: Hans-Hinrich Sievers
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Publication number: 20180078364Abstract: A heart valve prosthesis includes a downstream first axial end (6) and an upstream second axial end (8) and a stitching ring (10) extending in an arcuate manner for stitching in a blood vessel. The arcuate course of the stitching ring (10) is formed by three arcs (12) and three transition regions (14). At each end of two of the arcs (12) transition into each other. The stitching ring (10) has a movable tab (18) at at least one of the three transition regions (14). The movable tab (18) can be selectively directed toward the first axial end (6) or folded over toward the second axial end (8).Type: ApplicationFiled: March 23, 2016Publication date: March 22, 2018Inventor: Hans-Hinrich Sievers
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Publication number: 20170312073Abstract: A heart valve prosthesis includes a valve frame (2), on which frame several valve leaflets (8) are fastened, as well as a fastening region which connects axially onto the valve frame (2), for fastening in a blood vessel. The fastening region includes a stabilizing ring (14, 14?, 14?, 14??, 14??) which defines a given shape and a given diameter and is connected to the valve frame (2) is a force-decoupled manner.Type: ApplicationFiled: November 16, 2015Publication date: November 2, 2017Inventor: Hans-Hinrich SIEVERS
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Patent number: 9775708Abstract: A heart valve prosthesis has an annular body (2) and with several flap elements (4) which are movably connected to the annular body (2) via joints (10). The joints (10) engage on the flap elements (4) at their ventricular surface (18).Type: GrantFiled: September 19, 2013Date of Patent: October 3, 2017Inventor: Hans-Hinrich Sievers
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Patent number: 9694124Abstract: A cardiac support system comprising an intake region for the intake of blood, an outlet region for discharging the intake blood, a pump arrangement for conveying the blood from the intake region to the outlet region, a pump-aorta connection, and a suction connection from the intake region to the pump, parts of the function of the heart being taken on by said cardiac support system, and a cardiac support method having the steps of taking in blood from within the left half of the heart, pumping, and transferring aspirated blood into the aorta with the cardiac support system.Type: GrantFiled: June 13, 2014Date of Patent: July 4, 2017Assignee: Universitaet zu LuebeckInventor: Hans-Hinrich Sievers
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Publication number: 20160213828Abstract: A cardiac support system comprising an intake region for the intake of blood, an outlet region for discharging the intake blood, a pump arrangement for conveying the blood from the intake region to the outlet region, a pump-aorta connection, and a suction connection from the intake region to the pump, parts of the function of the heart being taken on by said cardiac support system, and a cardiac support method having the steps of taking in blood from within the left half of the heart, pumping, and transferring aspirated blood into the aorta with the cardiac support system.Type: ApplicationFiled: June 13, 2014Publication date: July 28, 2016Inventor: Hans-Hinrich Sievers
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Publication number: 20150272738Abstract: A heart valve prosthesis has an annular body (2) and with several flap elements (4) which are movably connected to the annular body (2) via joints (10). The joints (10) engage on the flap elements (4) at their ventricular surface (18).Type: ApplicationFiled: September 19, 2013Publication date: October 1, 2015Inventor: Hans-Hinrich Sievers
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Patent number: 8728152Abstract: A woven aortic sinus prosthesis has a first substantially cylindrical section position away from a patient's heart, which optionally passes into an aortic arch of the patient, a second section having a greater diameter than the first section and forming a bulb, which second section is connected to the first section, and optionally a third substantially cylindrical section close to the heart, which is connected to the bulb section, wherein the prosthesis is continuously woven and has a constant number of warp yarns over its axial length, whereby there is a greater distance between the warp yarns in a region of the bulb section than in the first and third cylindrical sections.Type: GrantFiled: October 19, 2007Date of Patent: May 20, 2014Assignee: Aesculap AGInventors: Helmut Goldmann, Christof Merckle, Hans-Hinrich Sievers
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Patent number: 8137395Abstract: The invention relates to a vessel prosthesis, particularly for the replacement of aorta segments near the heart, in the form of a pleated flexible tube with folds (3), the tube being configured as an arc, and the arc shape being fixed in an extension-resistant manner, in the non-implanted state, by means of extension limiters.Type: GrantFiled: November 4, 2010Date of Patent: March 20, 2012Assignee: Aesculap AGInventors: Hans-Hinrich Sievers, Lisa Lippoth
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Patent number: 8128683Abstract: The invention relates to a textile vascular prosthesis (1) with a circulatory pleating formed by folds (4), and with an arch-shaped longitudinal flexion (2) extending over at least a partial section and formed by asymmetric shortening gathering of the prosthesis wall by means of at least one longitudinal seam (7) extending along the partial section. The at least one longitudinal seam gathers the prosthesis wall while preserving the accordion-like structure (4) and the compacted state of the pleating (4) in the longitudinal direction.Type: GrantFiled: July 20, 2005Date of Patent: March 6, 2012Assignees: Aesculap & Co. KGInventors: Lisa Lippoth, Christof Merckle, Helmut Goldmann, Jürgen Scherberich, Hans-Hinrich Sievers
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Patent number: 7918885Abstract: The invention relates to a vessel prosthesis, particularly for the replacement of aorta segments near the heart, in the form of a pleated flexible tube with folds (3), the tube being configured as an arc, and the arc shape being fixed in an extension-resistant manner, in the non-implanted state, by means of extension limiters.Type: GrantFiled: December 13, 2002Date of Patent: April 5, 2011Assignee: AESCULAP AGInventors: Hans-Hinrich Sievers, Lisa Lippoth
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Publication number: 20110046714Abstract: The invention relates to a vessel prosthesis, particularly for the replacement of aorta segments near the heart, in the form of a pleated flexible tube with folds (3), the tube being configured as an arc, and the arc shape being fixed in an extension-resistant manner, in the non-implanted state, by means of extension limiters.Type: ApplicationFiled: November 4, 2010Publication date: February 24, 2011Applicant: AESCULAP AGInventors: Hans-Hinrich SIEVERS, Lisa LIPPOTH
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Patent number: 7758638Abstract: The implant has an annularly bent base, whereby the imagined surface enclosed by the base is bent. Preferably the surface enclosed by the base is a symmetrical. It is particularly advantageous if the base is enclosed by a solid material and this is enclosed by a relatively soft material. This offers the possibility of designing fastening clips in the relatively solid material. Such implants are especially suited as heart valve rings.Type: GrantFiled: August 29, 2007Date of Patent: July 20, 2010Assignee: ATS Medical, Inc.Inventor: Hans Hinrich Sievers
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Publication number: 20100094390Abstract: A woven aortic sinus prosthesis has a first substantially cylindrical section position away from a patient's heart, which optionally passes into an aortic arch of the patient, a second section having a greater diameter than the first section and forming a bulb, which second section is connected to the first section, and optionally a third substantially cylindrical section close to the heart, which is connected to the bulb section, wherein the prosthesis is continuously woven and has a constant number of warp yarns over its axial length, whereby there is a greater distance between the warp yarns in a region of the bulb section than in the first and third cylindrical sections.Type: ApplicationFiled: October 19, 2007Publication date: April 15, 2010Applicant: Aesculap AG, a corporation of GermanyInventors: Helmut Goldmann, Christof Merckle, Hans-Hinrich Sievers
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Patent number: 7473245Abstract: The invention relates to an aortic cannula for delivering fluid, especially blood, into a vessel of the human body, particularly the aortic arch. Said aortic cannula comprises an elongate basic cannula body into which the fluid is directed, an orifice from which the fluid is discharged at the distal end of the basic cannula body in a basic direction of flow defined by the basic cannula body, as well as at least one first deflecting element and a second deflecting element that are disposed in front of the orifice within the flow path of the fluid. Said at least one deflecting element and said second deflecting element are respectively provided with a passage opening that is aligned relative to the orifice, and a deflecting area which redirects the portion of the fluid, which does not flow through the passage opening.Type: GrantFiled: January 20, 2004Date of Patent: January 6, 2009Assignee: Sorin Group Deutschland GmbHInventors: Hans-Hinrich Sievers, Marcus Göllner, Michael Wetzig
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Publication number: 20080065199Abstract: The invention relates to a textile vascular prosthesis (1) with a circulatory pleating formed by folds (4), and with an arch-shaped longitudinal flexion (2) extending over at least a partial section and formed by asymmetric shortening gathering of the prosthesis wall by means of at least one longitudinal seam (7) extending along the partial section. The at least one longitudinal seam gathers the prosthesis wall while preserving the accordion-like structure (4) and the compacted state of the pleating (4) in the longitudinal direction.Type: ApplicationFiled: July 20, 2005Publication date: March 13, 2008Applicant: AESCULAP AG & CO. KGInventors: Lisa Lippoth, Christof Merckle, Helmut Goldmann, Jürgen Scherberich, Hans-Hinrich Sievers
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Patent number: 7276079Abstract: The implant has an annularly bent base, whereby the imagined surface enclosed by the base is bent. Preferably the surface enclosed by the base is a symmetrical. It is particularly advantageous if the base is enclosed by a solid material and this is enclosed by a relatively soft material. This offers the possibility of designing fastening clips in the relatively solid material. Such implants are especially suited as heart valve rings.Type: GrantFiled: July 13, 2004Date of Patent: October 2, 2007Assignee: MEDOS Medizintechnik AGInventor: Hans Hinrich Sievers