Patents by Inventor Benjamin D. Fitz

Benjamin D. Fitz 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: 20220331475
    Abstract: The present invention is directed to a hemostatic patch comprising a porous substrate and at least a pair of co-reactive polymer reagents comprising at least one nucleophilic polyalkylene oxide based component and at least one electrophilic polyalkylene oxide-based on the porous substrate in a molar ratio of about 0.2 to about 0.9:1 of primary nucleophilic groups in excess to available electrophilic groups. The present invention is also directed to processes for the manufacture and use of such hemostatic patches.
    Type: Application
    Filed: February 9, 2022
    Publication date: October 20, 2022
    Inventors: Nir Nativ, Thomas Weindl, Benjamin D. Fitz, Gerard Llanos, Guanghui Zhang, Yi-Lan Wang, Meng Deng
  • Patent number: 10111782
    Abstract: The present invention is directed to a resorbable hemostatic nonwoven felt suitable for use in laparoscopic procedures and to methods for manufacturing said felt.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: October 30, 2018
    Assignee: Ethicon, Inc.
    Inventors: Benjamin D. Fitz, Dwayne Looney, Thomas Lee Craven, Clifford Dey, Atul Garg
  • Publication number: 20170172805
    Abstract: The present invention is directed to a resorbable hemostatic nonwoven felt suitable for use in laparoscopic procedures and to methods for manufacturing said felt.
    Type: Application
    Filed: March 6, 2017
    Publication date: June 22, 2017
    Inventors: Benjamin D. Fitz, Dwayne Looney, Thomas Lee Craven, Clifford Dey, Atul Garg
  • Publication number: 20170072113
    Abstract: A bimodal polymer blend of first and second poly(L-lactide-co-glycolide) copolymers, wherein the molecular weight ratio of the first to the second copolymer is at least about two to one, and the blend has crystallization and hydrolysis rates greater than either of the first or second copolymers alone.
    Type: Application
    Filed: September 15, 2015
    Publication date: March 16, 2017
    Inventors: Sasa ANDJELIC, Benjamin D. FITZ
  • Patent number: 9238094
    Abstract: A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 19, 2016
    Assignee: Ethicon, Inc.
    Inventors: Sasa Andjelic, Benjamin D. Fitz, Jianguo Jack Zhou
  • Patent number: 9173980
    Abstract: A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: November 3, 2015
    Assignee: Ethicon, Inc.
    Inventors: Sasa Andjelic, Benjamin D. Fitz
  • Patent number: 8962784
    Abstract: A novel macromer or mixture thereof is described herein, comprising isocyanatophenyl ether terminal moieties and at least two residues of a water-soluble polymer having a molecular weight ranging from 80 to 10,000 adjacent to the ether group of the isocyanatophenyl ether terminal isocyanate moieties, thereby forming at least two ether linkages in the macromer or mixture thereof. A method for making a polyisocyanate macromer is also described herein.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: February 24, 2015
    Assignee: Ethicon, Inc.
    Inventors: Chetan Anirudh Khatri, Benjamin D. Fitz, Joseph Zavatsky
  • Patent number: 8470954
    Abstract: A novel macromer or mixture thereof is described herein, comprising benzoyl isocyanate terminal moieties and at least two residues of a water-soluble polymer having a molecular weight ranging from 80 to 10,000 adjacent to the carbonyl group of the benzoyl isocyanate moieties, thereby forming at least two ester linkages in the macromer or mixture thereof. A method for making a polyisocyanate macromer is also described herein.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: June 25, 2013
    Assignee: Ethicon, Inc.
    Inventors: Christopher M. Westergom, Benjamin D. Fitz
  • Patent number: 8450431
    Abstract: A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: May 28, 2013
    Assignee: Ethicon, Inc.
    Inventors: Sasa Andjelic, Benjamin D. Fitz
  • Publication number: 20120302528
    Abstract: A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.
    Type: Application
    Filed: August 6, 2012
    Publication date: November 29, 2012
    Applicant: ETHICON, INC.
    Inventors: Sasa ANDJELIC, Benjamin D. FITZ, Jianguo Jack ZHOU
  • Patent number: 8236904
    Abstract: A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: August 7, 2012
    Assignee: Ethicon, Inc.
    Inventors: Sasa Andjelic, Benjamin D. Fitz, Jianguo Jack Zhou
  • Publication number: 20120115384
    Abstract: The present invention is directed to a resorbable hemostatic nonwoven felt suitable for use in laparoscopic procedures and to methods for manufacturing said felt.
    Type: Application
    Filed: August 4, 2011
    Publication date: May 10, 2012
    Inventors: Benjamin D. Fitz, Dwayne Looney, Thomas Lee Craven, Clifford Dey, Atul Garg
  • Patent number: 8071663
    Abstract: The present invention is directed to a medically acceptable formulation comprising a diisocyanate terminated macromer or mixture thereof, and bio-absorbable desiccant comprising a hygroscopic and/or hydrophilic or combination thereof. The present invention is also directed to methods of use for such formulations for medical procedures.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: December 6, 2011
    Assignee: Ethicon, Inc.
    Inventors: Benjamin D. Fitz, Elizabeth Vailhe, Joseph Zavatsky, Christopher M. Westergom
  • Patent number: 7968668
    Abstract: A novel macromer or mixture thereof is described herein, comprising benzoyl isocyanate terminal moieties and at least two residues of a water-soluble polymer having a molecular weight ranging from 80 to 10,000 adjacent to the carbonyl group of the benzoyl isocyanate moieties, thereby forming at least two ester linkages in the macromer or mixture thereof. A method for making a polyisocyanate macromer is also described herein.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: June 28, 2011
    Assignee: Ethicon Inc.
    Inventors: Benjamin D. Fitz, Christopher M. Westergom
  • Publication number: 20100158849
    Abstract: A novel macromer or mixture thereof is described herein, comprising isocyanatophenyl ether terminal moieties and at least two residues of a water-soluble polymer having a molecular weight ranging from 80 to 10,000 adjacent to the ether group of the isocyanatophenyl ether terminal isocyanate moieties, thereby forming at least two ether linkages in the macromer or mixture thereof. A method for making a polyisocyanate macromer is also described herein.
    Type: Application
    Filed: December 19, 2008
    Publication date: June 24, 2010
    Inventors: Chetan Anirudh Khatri, Benjamin D. Fitz, Joseph Zavatsky
  • Patent number: 7728097
    Abstract: A novel macromer or mixture thereof is described herein, comprising benzoyl isocyanate terminal moieties and at least two residues of a water-soluble polymer having a molecular weight ranging from 80 to 10,000 adjacent to the carbonyl group of the benzoyl isocyanate moieties, thereby forming at least two ester linkages in the macromer or mixture thereof. A method for making a diisocyanate macromer is also described herein.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: June 1, 2010
    Assignee: Ethicon, Inc.
    Inventors: Benjamin D. Fitz, Michael Justus, Christopher M. Westergom
  • Publication number: 20090222038
    Abstract: The present invention is directed to a medically acceptable formulation comprising a diisocyanate terminated macromer or mixture thereof, and bio-absorbable desiccant comprising a hygroscopic and/or hydrophilic or combination thereof. The present invention is also directed to methods of use for such formulations for medical procedures.
    Type: Application
    Filed: March 31, 2009
    Publication date: September 3, 2009
    Inventors: Benjamin D. Fitz, Elizabeth Vailhe, Joseph Zavatsky, Christopher M. Westergom
  • Publication number: 20090118241
    Abstract: A bimodal bioabsorbable polymer composition. The composition includes a first amount of a bioabsorbable polymer polymerized so as to have a first molecular weight distribution; a second amount of said bioabsorbable polymer polymerized so as to have a second molecular weight distribution having a weight average molecular weight between about 10,000 to about 50,000 Daltons, the weight average molecular weight ratio of said first molecular weight distribution to said second molecular weight distribution is at least about two to one; wherein a substantially homogeneous blend of said first and second amounts of said bioabsorbable polymer is formed in a ratio of between about 50/50 to about 95/5 weight/weight percent. Also disclosed are a medical device, a method of making a medical device and a method of melt blowing a semi-crystalline polymer blend.
    Type: Application
    Filed: April 22, 2008
    Publication date: May 7, 2009
    Applicant: ETHICON, INC.
    Inventors: Sasa ANDJELIC, Benjamin D. FITZ, Jianguo Jack ZHOU
  • Patent number: 7310145
    Abstract: A method for determining the optical retardation and birefringence values of an anisotropic material utilizing a Fourier transform near infrared spectrophotometer operated in at least a portion of the range of wavenumbers between about 4,000 to about 10,000 cm?1.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: December 18, 2007
    Assignee: Ethicon, Inc.
    Inventors: Ferass Abuzaina, Sa{tilde over (s)}a Andjelić, Benjamin D. Fitz
  • Publication number: 20030215401
    Abstract: A composition for the treatment of sensitive teeth comprising a suitable carrier and a desensitizing amount of: a) at least one tubule blocking agent, preferably a combination of two such agents; and b) a nerve desensitizing agent selected from the group consisting of at least one potassium salt, at least one strontium salt, and mixtures thereof, wherein the tubule blocking agent deposits or swells upon the dentinal surface and/or precipitates within the dentinal tubules, retaining a higher concentration of the nerve desensitizing agent at the exposed dentinal surface and within the dentinal tubules. The compositions may further contain a source of physiologically acceptable fluoride ion, such as stannous fluoride. Also disclosed are methods of using the subject compositions in the treatment of sensitive teeth.
    Type: Application
    Filed: February 6, 2003
    Publication date: November 20, 2003
    Inventors: David Estrada, Benjamin D Fitz, Jan F Macik, Neil J Napolitano, Alfred J Smetana, Joseph D Synoids, Michael E Trama