Patents by Inventor Christoph Hehrlein
Christoph Hehrlein 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: 10898355Abstract: A stent having a tubular framework structure consisting of interconnected stent struts, fabricated as a whole from a bioresorbable material and being convertible from a compressed first geometric shape into a radially dilated, dimensionally stable, tubular second geometric shape. Characterized by all of the stent struts of the tubular framework structure has made of a uniform bioresorbable material, the tubular framework structure comprises at least one surface region, which is congruent in one piece and is situated on a lateral cylindrical surface the surface, region comprising stent struts surrounded by stent struts of the framework structure that are adjacent to the surface region, such that the stent struts within the surface region have a smaller amount by weight of bioresorbable material per one predefinable discrete strut length, than the stent struts of the framework structure adjacent to the surface regions.Type: GrantFiled: March 13, 2014Date of Patent: January 26, 2021Assignee: ALBERT-LUDWIGS-UNIVERSITĂ„TFREIBURGInventor: Christoph Hehrlein
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Patent number: 10426511Abstract: A device for detaching parietal thrombi from a bodily vessel is described having a catheter including at least one catheter section with a catheter wall with at least one wall opening which passes completely through the catheter wall. The catheter wall along the least one catheter section is made of a resiliently deformable material in which the at least one wall opening includes a separating helical gap wound around the catheter wall at least in parts along the catheter section. A fixing device permits releasable fixing of the catheter on a bodily vessel so that the catheter can be converted, exclusively by an external mechanical constraint in the form of a torque acting torsionally on the catheter, from a state of smaller catheter outer diameter to a state of larger catheter outer diameter.Type: GrantFiled: October 21, 2013Date of Patent: October 1, 2019Assignee: UNIVERSITĂ„TSKLINIKUM FREIBURGInventor: Christoph Hehrlein
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Patent number: 10420581Abstract: A device for detaching parietal thrombi from a blood vessel is disclosed, comprising a catheter including at least one catheter section, wherein an outer diameter of the at least one catheter section is changeable and at least one wall opening extends transversely through a wall of the at least one catheter section. The catheter wall along the at least one catheter section is a resilient and deformable material. The catheter is transformed from a smaller catheter outer diameter to a uniform larger catheter outer diameter by a resilient change in shape. A displacement body can be introduced into the at least one catheter section which is transformed in diameter to deform the catheter from the smaller catheter outer diameter to the larger outer diameter for capturing thrombus material.Type: GrantFiled: November 12, 2012Date of Patent: September 24, 2019Assignee: UNIVERSITATSKLINIKUM FREIBURGInventor: Christoph Hehrlein
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Publication number: 20160022450Abstract: A stent having a tubular framework structure consisting of interconnected stent struts, fabricated as a whole from a bioresorbable material and being convertible from a compressed first geometric shape into a radially dilated, dimensionally stable, tubular second geometric shape. Characterized by all of the stent struts of the tubular framework structure has made of a uniform bioresorbable material, the tubular framework structure comprises at least one surface region, which is congruent in one piece and is situated on a lateral cylindrical surface the surface, region comprising stent struts surrounded by stent struts of the framework structure that are adjacent to the surface region, such that the stent struts within the surface region have a smaller amount by weight of bioresorbable material per one predefinable discrete strut length, than the stent struts of the framework structure adjacent to the surface regions.Type: ApplicationFiled: March 13, 2014Publication date: January 28, 2016Applicant: ALBERT-LUDWIGS-UNIVERSITAT FREIBURGInventor: Christoph HEHRLEIN
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Publication number: 20150289902Abstract: A device for detaching parietal thrombi from a bodily vessel is described, said device having a catheter, along the catheter longitudinal extent of which at least one catheter section is provided in which the associated catheter wall has at least one wall opening which passes completely through the catheter wall.Type: ApplicationFiled: October 21, 2013Publication date: October 15, 2015Inventor: Christoph HEHRLEIN
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Publication number: 20150088174Abstract: A device for detaching parietal thrombi from a blood vessel is disclosed, comprising a catheter including at least one catheter section, wherein an outer diameter of the at least one catheter section is changeable and at least one wall opening extends transversely through a wall of the at least one catheter section The catheter wall along the at least one catheter section is a resilient and deformable material. The catheter is transformed from a smaller catheter outer diameter to a larger catheter outer diameter by a resilient change in shape. A displacement body can be introduced into the at least one catheter section which is transformed in diameter to deform the catheter from the smaller catheter outer diameter to the larger outer diameter for capturing thrombus material.Type: ApplicationFiled: November 12, 2012Publication date: March 26, 2015Inventor: Christoph Hehrlein
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Patent number: 8142412Abstract: A system comprising: a hollow tube having a distal end, a proximal end, and a lumen extending between the distal end and the proximal end; at least a portion of the tube comprising a porous membrane; and a gas-rich perfluorocarbon solution incorporated in the porous membrane; wherein the porous membrane has a porosity in the range of 0.001-200 microns, in order that: (i) the gas-rich perfluorocarbon solution is effectively incorporated into the porous membrane; and (ii) when the porous membrane is positioned in blood, the gas-rich perfluorocarbon solution elutes out of the porous membrane, in aggregations small enough to prevent the creation of embolisms in the blood, with the elution of the gas-rich perfluorocarbon solution into the blood varying between minutes and several hours, depending on the temperature and the hemodynamics of the blood.Type: GrantFiled: January 9, 2008Date of Patent: March 27, 2012Assignee: Oxira Medical Inc.Inventors: Christoph Hehrlein, Michael Braun, John S. Geis, Todd Davenport
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Patent number: 7481799Abstract: The invention described herein consists of an oxygen deliver source for local blood or tissue oxygenation. The invention consists of porous polymer structures being part of a medical device from which a liquid oxygen carrier is locally or systemically released. The substrate membrane impregnated with the oxygen carrier may be a part of a tube, a balloon, a perfusion balloon, a stent and a wire. The substrate membrane is sealed with a removable housing for the oxygen carrier to allow storage of the medical device.Type: GrantFiled: January 3, 2002Date of Patent: January 27, 2009Assignee: Oxira Medical Inc.Inventors: Christoph Hehrlein, Gerhard Karl Wolf, Adalbert Kovacs
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Publication number: 20080294086Abstract: A system comprising: a hollow tube having a distal end, a proximal end, and a lumen extending between the distal end and the proximal end; at least a portion of the tube comprising a porous membrane; and a gas-rich perfluorocarbon solution incorporated in the porous membrane; wherein the porous membrane has a porosity in the range of 0.001-200 microns, in order that: (i) the gas-rich perfluorocarbon solution is effectively incorporated into the porous membrane; and (ii) when the porous membrane is positioned in blood, the gas-rich perfluorocarbon solution elutes out of the porous membrane, in aggregations small enough to prevent the creation of embolisms in the blood, with the elution of the gas-rich perfluorocarbon solution into the blood varying between minutes and several hours, depending on the temperature and the hemodynamics of the blood.Type: ApplicationFiled: January 9, 2008Publication date: November 27, 2008Inventors: Christoph Hehrlein, Michael Braun, John S. Geis, Todd Davenport
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Publication number: 20030198798Abstract: The invention described herein consists of an oxygen deliver source for local blood or tissue oxygenation. The invention consists of porous polymer structures being part of a medical device from which a liquid oxygen carrier is locally or systemically released. The substrate membrane impregnated with the oxygen carrier may be a part of a tube, a balloon, a perfusion balloon, a stent and a wire. The substrate membrane is sealed with a removable housing for the oxygen carrier to allow storage of the medical device.Type: ApplicationFiled: January 3, 2002Publication date: October 23, 2003Inventors: Christoph Hehrlein, Gerhard Karl Wolf, Adalbert Kovacs
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Patent number: 5947889Abstract: A balloon catheter (1) is characterized by at least one radioactive nuclide species in or on the wall of the balloon (2) in order to eliminate vessel restrictions or stenoses and to inhibit restenosis in arteries (6), veins or vessel implants or to inhibit the growth of tumors, in which at least one radionuclide species is mixed with the plastic of the balloon wall, directly implanted into the balloon wall, or applied to the balloon wall as firmly adhesive film.Type: GrantFiled: July 18, 1997Date of Patent: September 7, 1999Inventor: Christoph Hehrlein
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Patent number: 5674177Abstract: In a vascular implant for the prevention or elimination of vascular restrictions a tubular body to be inserted into a body vessel includes at least a first nuclide species which has a half life in the range of 7 hours to 7 days and a second nuclide species which has a half life of more than 100 days. Instead of providing a second nuclide species, the first nuclide species may also decay into the second nuclide species thereby providing a high initial radioactivity for a relatively short period and a relatively low radioactivity over a relatively long period.Type: GrantFiled: July 17, 1995Date of Patent: October 7, 1997Assignee: Kernforschungszentrum Karlsruhe GmbHInventors: Christoph Hehrlein, Peter Fehsenfeld