Patents by Inventor Holger Gruell

Holger Gruell 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).

  • Publication number: 20210186588
    Abstract: The invention provides for a medical system (100, 300, 400, 500) comprising: a memory (110) for storing machine executable instructions (150) and a processor (104) for controlling the medical system.
    Type: Application
    Filed: March 16, 2018
    Publication date: June 24, 2021
    Inventors: ULRICH KATSCHER, JOCHEN KEUPP, HOLGER GRUELL, EDWIN HEIJMAN, SIN YUIN YEO
  • Patent number: 9795693
    Abstract: Described are drug carriers useful in magnetic resonance imaging (MRI)-guided drug release comprising a shell capable of releasing an enclosed biologically active agent as a result of a local stimulus, e.g. energy input, such as heat, wherein the shell encloses a 19F MR contrast agent. Preferably, the carrier also acts as a contrast enhancement agent for MRI based on the principle of Chemical Exchange-dependent Saturation Transfer (CEST). To this end the shell encloses a cavity that comprises a paramagnetic chemical shift reagent, a pool of proton analytes, and the 19F contrast agent, and wherein the shell allows diffusion of the proton analytes.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: October 24, 2017
    Assignee: Koninklijke Philips N.V.
    Inventors: Sander Langereis, Jochen Keupp, Holger Gruell, Dirk Burdinski, Danielle Beelen
  • Patent number: 9718929
    Abstract: Described are amphiphilic polymers that are provided with chelating moieties. The amphiphilic polymers are block copolymers comprising a hydrophilic block and a hydrophobic block, with the chelating moieties linked to the end-group of the hydrophilic block. The disclosed polymers are capable of self-assembly into structures such as micelles and polymersomes. With suitable metals present in the form of coordination complexes with the chelating moieties, the chelating amphiphilic polymers of the invention are suitable for use in various imaging techniques requiring metal labeling, such as MRI (T1/T2 weighted contrast agents or CEST contrast agents) SPECT, PET or Spectral CT.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: August 1, 2017
    Assignee: KONINKLIJKE PHILIPS N.V.
    Inventors: Holger Gruell, Anke De Vries, Sander Langereis, Johan Lub, Erica Maria Gerarda Aussems-Custers
  • Patent number: 9642802
    Abstract: Disclosed are carriers for drugs and/or MR imaging agents having a lipid bilayer shell comprising a phospholipid having two terminal alkyl chains, one being a short chain having a chain length of at most seven carbon atoms, the other being a long chain having a chain length of at least fifteen carbon atoms. The mixed long/short chain phospholipids serve to tune the release properties of the carrier. Preferred phospholipids are phosphatidylcholines.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: May 9, 2017
    Assignee: Koninklijke Philips N.V.
    Inventors: Sander Langereis, Holger Gruell, Mariska De Smet, Erica Maria Gerarda Aussems-Custers, Johan Lub
  • Publication number: 20150247008
    Abstract: Described are amphiphilic polymers that are provided with chelating moieties. The amphiphilic polymers are block copolymers comprising a hydrophilic block and a hydrophobic block, with the chelating moieties linked to the end-group of the hydrophilic block. The disclosed polymers are capable of self-assembly into structures such as micelles and polymersomes. With suitable metals present in the form of coordination complexes with the chelating moieties, the chelating amphiphilic polymers of the invention are suitable for use in various imaging techniques requiring metal labeling, such as MRI (T1/T2 weighted contrast agents or CEST contrast agents) SPECT, PET or Spectral CT.
    Type: Application
    Filed: May 15, 2015
    Publication date: September 3, 2015
    Inventors: HOLGER GRUELL, ANKE DE VRIES, SANDER LANGEREIS, JOHAN LUB, ERICA MARIA GERARDA AUSSEMS-CUSTERS
  • Patent number: 9061062
    Abstract: Disclosed are lipidomimetic compounds of formula I (I) wherein: G represents a group satisfying formula II: HO—CH2—{CH(OH)—CH2-0}m-CH2—{C(=0)-0-CH2})q— formula II each n independently is an integer from 1-30; m is an integer from 1-10; q is 0 or 1. These compounds can be added to the lipid bilayer of thermosensitive liposomes, for the purpose of aiding in the prevention of leakage of the liposomes' contents at 37° C., and retarding clearance from circulation.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: June 23, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Holger Gruell, Sander Langereis, Johan Lub
  • Publication number: 20150147273
    Abstract: A method for determining whether compound 0118 is a candidate treatment for a patient includes processing, via a processor, image data of tissue of interest of a patient including a cancer to determine whether a radiolabeled analog of compound 0118 is present in the tissue of interest represented in the image data and generating a signal indicating that compound 0118 is a candidate treatment for the patient in response to the determining that the radiolabeled analog of compound 0118 is present in a predetermined amount in the tissue of interest represented in the image data, wherein the presence of the radiolabeled analog of compound 0118 in the tissue of interest indicates presence of a sub-type of cancer having a galectin-1 molecular target, which is a sub-type of treatable by compound 0118.
    Type: Application
    Filed: June 10, 2013
    Publication date: May 28, 2015
    Applicant: Koninklijke Philips N.V.
    Inventors: Tilman Lappchen, Holger Gruell, Marc Stefan Robillard, Johan Lub
  • Patent number: 9034298
    Abstract: Described are amphiphilic polymers that are provided with chelating moieties. The amphiphilic polymers are block copolymers comprising a hydrophilic block and a hydrophobic block, with the chelating moieties linked to the end-group of the hydrophilic block. The disclosed polymers are capable of self-assembly into structures such as micelles and polymersomes. With suitable metals present in the form of coordination complexes with 5 the chelating moieties, the chelating amphiphilic polymers of the invention are suitable for use in various imaging techniques requiring metal labeling, such as MRI (T 1/T 2 weighted contrast agents or CEST contrast agents) SPECT, PET or Spectral CT.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: May 19, 2015
    Assignee: Koninklijke Philips N.V.
    Inventors: Holger Gruell, Anke De Vries, Sander Langereis, Johan Lub, Erica M. G. Aussems-Custers
  • Patent number: 8734761
    Abstract: The invention provides MRI contrast agents which provide a high sensitivity and which have an optimised body retention time. These agents enable the mapping of the local pH, temperature, oxygen concentration or other metabolites in a patient's body by the use of Chemical Exchange Saturation Transfer (CEST). Particularly pH and temperature mapping are useful for the detection of small cancer lesions and localized inflammation respectively.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: May 27, 2014
    Assignee: Koninklijke Philips N.V.
    Inventors: Nicolaas Petrus Willard, Rene Theodorus Wegh, Jeroen Alphons Pikkemaat, Holger Gruell
  • Publication number: 20140127135
    Abstract: Disclosed are lipidomimetic compounds of formula I (I) wherein: G represents a group satisfying formula II: HO—CH2—{CH(OH)—CH2-0}m-CH2—{C(=0)-0-CH2})q— formula II each n independently is an integer from 1-30; m is an integer from 1-10; q is 0 or 1. These compounds can be added to the lipid bilayer of thermosensitive liposomes, for the purpose of aiding in the prevention of leakage of the liposomes' contents at 37° C., and retarding clearance from circulation.
    Type: Application
    Filed: June 6, 2012
    Publication date: May 8, 2014
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Holger Gruell, Sander Langereis, Johan Lub
  • Publication number: 20130302253
    Abstract: Disclosed is a carrier for the local, targeted administration of a hydrophobic drug. The hydrophobic drug is rendered in to a hydrophilic prodrug thereof, and is contained in the lumen of a thermosensitive liposome or polymersome. Upon administration of the carrier, heat can be applied at the locus where the drug is to be released. After release of the prodrug, it will be activated so as to turn into the active drug.
    Type: Application
    Filed: January 25, 2012
    Publication date: November 14, 2013
    Applicant: KONINKLIJKE PHILIPS N.V.
    Inventors: Holger Gruell, Sander Langereis, Charles Sio
  • Patent number: 8463358
    Abstract: A method for MRI imaging to obtain information about a local physiochemical parameter after administration to a patient of a contrast agent including at least one non-responsive contrast enhancing entity that does not occur naturally in a human body and at least one responsive contrast enhancing entity attached to or mixed with the non-responsive contrast enhancing entity. By using such non-responsive contrast enhancing entities, a value for the physicochemical parameter can be obtained by acquiring only three images, providing a method which will be easier to apply in a clinical routine, since it will be faster and less sensitive to motion or flow artifacts.
    Type: Grant
    Filed: June 8, 2007
    Date of Patent: June 11, 2013
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Rudolf Mathias Johannes Nicolaas Lamerichs, Rene Theodorus Wegh, Jeroen Alphons Pikkemaat, Holger Gruell
  • Publication number: 20130108551
    Abstract: Disclosed are carriers for drugs and/or MR imaging agents having a lipid bilayer shell comprising a phospholipid having two terminal alkyl chains, one being a short chain having a chain length of at most seven carbon atoms, the other being a long chain having a chain length of at least fifteen carbon atoms. The mixed long/short chain phospholipids serve to tune the release properties of the carrier. Preferred phospholipids are phosphatidylcholines.
    Type: Application
    Filed: July 8, 2011
    Publication date: May 2, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Sander Langereis, Holger Gruell, Mariska De Smet, Erica Maria Gerarda Aussems-Custers, Johan Lub
  • Patent number: 8306603
    Abstract: The present invention provides a method MRI imaging. By applying a time modulation to the contrast enhancement of an MRI contrast agent, the method according to the invention leads to images with improved signal-to-noise ratio in the contrast-enhanced areas, strongly suppressed unwanted signal in the unenhanced areas, and reduced artefacts, such as motion artefacts.
    Type: Grant
    Filed: April 25, 2006
    Date of Patent: November 6, 2012
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Nicolaas Petrus Willard, Rene Theodorus Wegh, Jeroen Alphons Pikkemaat, Holger Gruell, Tobias Schaeffter, Rudolf Mathias Johannes Nicolaas Lamerichs
  • Publication number: 20120128589
    Abstract: Described is the use of perfluoro-t-butyl cyclohexane in a contrast agent for molecular imaging, notably F MRI. Particularly, the perfluoro-t-butyl cyclohexane is present in the form of an aqueous emulsion of nanoparticles comprising the perfluoro compound as a core, and an emulsifying agent, such as a phospholipid, as a shell. The shell can be functionalized with other moieties that play a role in imaging, notably ligands for targeted binding and/or contrast agents or labels with a view to other imaging modalities. The latter particularly refers to 1H MRI contrast agents as well as radiolabels for SPECT.
    Type: Application
    Filed: July 21, 2010
    Publication date: May 24, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Muhammed Yildirim, Holger Gruell, Rudolf Mathias Johannes Nicolaas Lamerichs
  • Publication number: 20120100079
    Abstract: The present invention relates to a composition comprising a shell structure forming a cavity, wherein said shell structure comprises a drug and wherein said composition is associated with at least one contrast agent; wherein said shell structure is capable of releasing its contents into the exterior upon the application of an external stimulus and wherein said contrast agent comprises magnetic particles which are capable of being detected by Magnetic Particle Imaging (MPI), wherein at least more than 5% (w/w) of the magnetic particles comprised in said contrast agent have a magnetic moment of at least ?18 m 2 A, 10 wherein said magnetic particles are preferably composed of Fe, Co, Ni, Zn or Mn or alloys thereof or oxides of any of these.
    Type: Application
    Filed: June 25, 2010
    Publication date: April 26, 2012
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Dirk Burdinski, Jeroen A. Pikkemaat, Bertrand Schmitt, Holger Gruell, Sander Langereis
  • Publication number: 20110288402
    Abstract: The invention relates to a method of MR imaging of at least a portion of a body of a patient placed in an examination volume of an MR device. The object of the invention is to improve CEST contrast enhanced imaging. The method of the invention comprises the following steps: a) saturation of nuclear magnetization of exchangeable protons of a CEST contrast agent administered to the patient by subjecting the portion of the body to at least one frequency-selective saturation RF pulse matched to the MR frequency of exchangeable protons of the CEST contrast agent, wherein the saturation period, i.e.
    Type: Application
    Filed: December 15, 2009
    Publication date: November 24, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Jeroen Alphons Pikkemaat, Sander Langereis, Holger Gruell, Dirk Burdinski, Rudolf Mathias Johannes Nicolaas Lamerichs, Jochen Keupp
  • Publication number: 20110182821
    Abstract: The invention provides a magnetic tracer material for use in magnetic particle imaging and a manufacturing method thereof. The magnetic tracer material comprises clusters of a plurality of magnetic particles that are clustered in a controlled way to form individual entities, for example, stabilized oil droplets, solid emulsion particles, liposomes, polymersomes or vesicles, or naturally occurring biological entities such as cells or viruses.
    Type: Application
    Filed: August 28, 2008
    Publication date: July 28, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Holger Gruell, Hans Marc Bert Boeve, Denis Markov
  • Publication number: 20110177009
    Abstract: Described are drug carriers useful in magnetic resonance imaging (MRI)-guided drug release comprising a shell capable of releasing an enclosed biologically active agent as a result of a local stimulus, e.g. energy input, such as heat, wherein the shell encloses a 19F MR contrast agent. Preferably, the carrier also acts as a contrast enhancement agent for MRI based on the principle of Chemical Exchange-dependent Saturation Transfer (CEST). To this end the shell encloses a cavity that comprises a paramagnetic chemical shift reagent, a pool of proton analytes, and the 19F contrast agent, and wherein the shell allows diffusion of the proton analytes.
    Type: Application
    Filed: September 3, 2009
    Publication date: July 21, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Sander Langereis, Jochen Keupp, Holger Gruell, Dirk Burdinski, Danielle Beelen
  • Publication number: 20110165074
    Abstract: Described are amphiphilic polymers that are provided with chelating moieties. The amphiphilic polymers are block copolymers comprising a hydrophilic block and a hydrophobic block, with the chelating moieties linked to the end-group of the hydrophilic block. The disclosed polymers are capable of self-assembly into structures such as micelles and polymersomes. With suitable metals present in the form of coordination complexes with 5 the chelating moieties, the chelating amphiphilic polymers of the invention are suitable for use in various imaging techniques requiring metal labeling, such as MRI (T 1/T 2 weighted contrast agents or CEST contrast agents) SPECT, PET or Spectral CT.
    Type: Application
    Filed: September 8, 2009
    Publication date: July 7, 2011
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: Holger Gruell, Anke De Vries, Sander Langereis, Johan Lub, Erica M.G. Aussems-Custers