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).

  • Patent number: 10898355
    Abstract: 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: Grant
    Filed: March 13, 2014
    Date of Patent: January 26, 2021
    Assignee: ALBERT-LUDWIGS-UNIVERSITĂ„TFREIBURG
    Inventor: Christoph Hehrlein
  • Patent number: 10426511
    Abstract: 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: Grant
    Filed: October 21, 2013
    Date of Patent: October 1, 2019
    Assignee: UNIVERSITĂ„TSKLINIKUM FREIBURG
    Inventor: Christoph Hehrlein
  • Patent number: 10420581
    Abstract: 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: Grant
    Filed: November 12, 2012
    Date of Patent: September 24, 2019
    Assignee: UNIVERSITATSKLINIKUM FREIBURG
    Inventor: Christoph Hehrlein
  • Publication number: 20160022450
    Abstract: 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: Application
    Filed: March 13, 2014
    Publication date: January 28, 2016
    Applicant: ALBERT-LUDWIGS-UNIVERSITAT FREIBURG
    Inventor: Christoph HEHRLEIN
  • Publication number: 20150289902
    Abstract: 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: Application
    Filed: October 21, 2013
    Publication date: October 15, 2015
    Inventor: Christoph HEHRLEIN
  • Publication number: 20150088174
    Abstract: 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: Application
    Filed: November 12, 2012
    Publication date: March 26, 2015
    Inventor: Christoph Hehrlein
  • Patent number: 8142412
    Abstract: 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: Grant
    Filed: January 9, 2008
    Date of Patent: March 27, 2012
    Assignee: Oxira Medical Inc.
    Inventors: Christoph Hehrlein, Michael Braun, John S. Geis, Todd Davenport
  • Patent number: 7481799
    Abstract: 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: Grant
    Filed: January 3, 2002
    Date of Patent: January 27, 2009
    Assignee: Oxira Medical Inc.
    Inventors: Christoph Hehrlein, Gerhard Karl Wolf, Adalbert Kovacs
  • Publication number: 20080294086
    Abstract: 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: Application
    Filed: January 9, 2008
    Publication date: November 27, 2008
    Inventors: Christoph Hehrlein, Michael Braun, John S. Geis, Todd Davenport
  • Publication number: 20030198798
    Abstract: 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: Application
    Filed: January 3, 2002
    Publication date: October 23, 2003
    Inventors: Christoph Hehrlein, Gerhard Karl Wolf, Adalbert Kovacs
  • Patent number: 5947889
    Abstract: 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: Grant
    Filed: July 18, 1997
    Date of Patent: September 7, 1999
    Inventor: Christoph Hehrlein
  • Patent number: 5674177
    Abstract: 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: Grant
    Filed: July 17, 1995
    Date of Patent: October 7, 1997
    Assignee: Kernforschungszentrum Karlsruhe GmbH
    Inventors: Christoph Hehrlein, Peter Fehsenfeld