Patents by Inventor Zhangwen Wu

Zhangwen Wu 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: 9566141
    Abstract: The invention includes a device for inserting a medicament within a body cavity of a mammal, and a cartridge for containing the medicament within the device, where the cartridge includes a housing, a retractable chamber for containing medicament disposed within the housing, and a substantially stationary member disposed within the barrel of the retractable chamber, where upon activation of the device, the retractable chamber is retracted about the substantially stationary member, thereby depositing medicament within the body cavity.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: February 14, 2017
    Assignee: Orapharma, Inc.
    Inventors: Zhangwen Wu, Michael J. Rello, James F. Hooper, James R. Lawter
  • Patent number: 9119902
    Abstract: The present invention is directed to absorbable microspheres comprising a copolymer formed from greater than 88 to about 99 mole percent ?-caprolactone or p-dioxanone, and about 1 to less than 12 mole percent of a different second monomer selected from the group consisting of glycolide, p-dioxanone, trimethylene carbonate and the lactides and combinations thereof, said microspheres having a particle size ranging from about 5 to 2,000 microns. Also described herein are a method for making such microspheres and formulations comprising such absorbable microspheres.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: September 1, 2015
    Assignee: Ethicon, Inc.
    Inventors: Modesto Erneta, Zhangwen Wu
  • Publication number: 20140093839
    Abstract: The invention includes a device for inserting a medicament within a body cavity of a mammal, and a cartridge for containing the medicament within the device, where the cartridge includes a housing, a retractable chamber for containing medicament disposed within the housing, and a substantially stationary member disposed within the barrel of the retractable chamber, where upon activation of the device, the retractable chamber is retracted about the substantially stationary member, thereby depositing medicament within the body cavity.
    Type: Application
    Filed: August 26, 2013
    Publication date: April 3, 2014
    Applicant: Orapharma, Inc.
    Inventors: Zhangwen WU, Michael J. RELLO, James F. HOOPER, James R. LAWTER
  • Patent number: 8480615
    Abstract: A device for inserting a medicament within a body cavity of a mammal, the device including a cartridge for containing the medicament, the cartridge including a housing, a retractable chamber disposed within the housing and having a lumen sized to contain the medicament, a stationary member disposed within the lumen and having a sized to provide a sliding fit within the lumen to provide for retraction of the retractable chamber about the stationary member upon actuation of the device, and means for retracting the retractable chamber while maintaining the stationary member in a stationary position. The device further includes means for activating the means for retracting the retractable chamber. The device further includes an actuator, the actuator including a handle case having a proximal portion for gripping and a distal portion including means for attaching the actuator to a cartridge.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: July 9, 2013
    Assignee: Orapharma, Inc.
    Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik DeBrun
  • Publication number: 20120010561
    Abstract: The invention includes a device for inserting a medicament within a body cavity of a mammal, and a cartridge for containing the medicament within the device, where the cartridge includes a housing, a retractable chamber for containing medicament disposed within the housing, and a substantially stationary member disposed within the barrel of the retractable chamber, where upon activation of the device, the retractable chamber is retracted about the substantially stationary member, thereby depositing medicament within the body cavity.
    Type: Application
    Filed: September 20, 2011
    Publication date: January 12, 2012
    Applicant: ORAPHARMA, INC.
    Inventors: Zhangwen Wu, Michael J. Rello, James F. Hopper, JR., James R. Lawter
  • Patent number: 8048021
    Abstract: The invention includes a device for inserting a medicament within a body cavity of a mammal, and a cartridge for containing the medicament within the device, where the cartridge includes a housing, a retractable chamber for containing medicament disposed within the housing, and a substantially stationary member disposed within the barrel of the retractable chamber, where upon activation of the device, the retractable chamber is retracted about the substantially stationary member, thereby depositing medicament within the body cavity.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: November 1, 2011
    Assignee: Orapharma, Inc.
    Inventors: Zhangwen Wu, Michael J. Rello, James F. Hooper, Jr., James R. Lawter
  • Publication number: 20110245764
    Abstract: A device for inserting a medicament within a body cavity of a mammal, the device including a cartridge for containing the medicament, the cartridge including a housing, a retractable chamber disposed within the housing and having a lumen sized to contain the medicament, a stationary member disposed within the lumen and having a sized to provide a sliding fit within the lumen to provide for retraction of the retractable chamber about the stationary member upon actuation of the device, and means for retracting the retractable chamber while maintaining the stationary member in a stationary position. The device further includes means for activating the means for retracting the retractable chamber. The device further includes an actuator, the actuator including a handle case having a proximal portion for gripping and a distal portion including means for attaching the actuator to a cartridge.
    Type: Application
    Filed: June 17, 2011
    Publication date: October 6, 2011
    Inventors: James R. LAWTER, Zhangwen WU, Michael J. RELLO, Charles D. FAUST, Erik deBRUN
  • Patent number: 7976490
    Abstract: The invention includes a cartridge for use in a device for inserting a medicament within a body cavity of a mammal, the cartridge including a housing, a retractable chamber disposed within the housing and having a lumen having a uniform cross-section sized to contain the medicament therein, a substantially stationary member disposed within the lumen of the retractable chamber and having a uniform cross-section sized to provide a sliding fit within the lumen suitable to provide for retraction of the retractable chamber about the substantially stationary member upon actuation of the device; and means for retracting the retractable chamber about the substantially stationary member while maintaining the substantially stationary member in a substantially stationary position upon actuation of the device.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: July 12, 2011
    Assignee: Orapharma, Inc.
    Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello
  • Patent number: 7976491
    Abstract: The invention includes an actuator for actuating a device for inserting a medicament within a body cavity of a mammal, the actuator including a handle case having a proximal portion for gripping and a distal portion including means for attaching the actuator to a cartridge for containing medicament, and means for creating a proximal to distal linear motion with respect to the handle case, wherein the cartridge includes a retractable chamber for containing the medicament disposed therein, a substantially stationary member and means for retracting the retractable chamber about the substantially stationary member while maintaining the substantially stationary member in a substantially stationary position.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: July 12, 2011
    Assignee: OraPharma, Inc.
    Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik deBrun
  • Patent number: 7976489
    Abstract: The invention includes a device for inserting a medicament within a body cavity of a mammal, the device including a cartridge for containing the medicament therein, the cartridge including a housing, a retractable chamber disposed within the housing and having a lumen, a substantially stationary member disposed within the lumen of the retractable chamber and having a uniform cross-section sized to provide a sliding fit within the lumen to provide for retraction of the retractable chamber about the substantially stationary member upon actuation of the device, and means for retracting the retractable chamber about the substantially stationary member while maintaining the substantially stationary member in a substantially stationary position upon actuation of the device; the device further including means for activating the means for retracting the retractable chamber.
    Type: Grant
    Filed: December 2, 2008
    Date of Patent: July 12, 2011
    Assignee: OraPharma, Inc.
    Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik deBrun
  • Patent number: 7964211
    Abstract: The present invention is directed to absorbable microspheres comprising a copolymer formed from greater than 88 to about 99 mole percent ?-caprolactone or p-dioxanone, and about 1 to less than 12 mole percent of a different second monomer selected from the group consisting of glycolide, p-dioxanone, trimethylene carbonate and the lactides and combinations thereof, said microspheres having a particle size ranging from about 5 to 2,000 microns. Also described herein are a method for making such microspheres and formulations comprising such absorbable microspheres.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: June 21, 2011
    Assignee: Ethicon, Inc.
    Inventors: Modesto Erneta, Zhangwen Wu
  • Publication number: 20100240859
    Abstract: The present invention is directed to absorbable microspheres comprising a copolymer formed from greater than 88 to about 99 mole percent ?-caprolactone or p-dioxanone, and about 1 to less than 12 mole percent of a different second monomer selected from the group consisting of glycolide, p-dioxanone, trimethylene carbonate and the lactides and combinations thereof, said microspheres having a particle size ranging from about 5 to 2,000 microns. Also described herein are a method for making such microspheres and formulations comprising such absorbable microspheres.
    Type: Application
    Filed: June 3, 2010
    Publication date: September 23, 2010
    Inventors: Modesto Erneta, Zhangwen Wu
  • Publication number: 20100136502
    Abstract: The invention includes a device for inserting a medicament within a body cavity of a mammal, and a cartridge for containing the medicament within the device, where the cartridge includes a housing, a retractable chamber for containing medicament disposed within the housing, and a substantially stationary member disposed within the barrel of the retractable chamber, where upon activation of the device, the retractable chamber is retracted about the substantially stationary member, thereby depositing medicament within the body cavity.
    Type: Application
    Filed: November 19, 2009
    Publication date: June 3, 2010
    Inventors: Zhangwen WU, Michael J. Rello, James F. Hooper, JR., James R. Lawter
  • Publication number: 20100016257
    Abstract: A method of treatment of osteoarthritis is described, where a therapeutically effective amount of a composition having biodegradable microparticles in an aqueous vehicle is delivered into the intra-articular space of a joint. In one aspect, the microparticle-containing composition is injected into the synovial fluid-containing portion of an affected joint.
    Type: Application
    Filed: September 22, 2009
    Publication date: January 21, 2010
    Applicant: Ethicon, Inc.
    Inventors: Laura J. Brown, Han Cui, Zhangwen Wu
  • Publication number: 20090148500
    Abstract: The invention includes a cartridge for use in a device for inserting a medicament within a body cavity of a mammal, the cartridge including a housing, a retractable chamber disposed within the housing and having a lumen having a uniform cross-section sized to contain the medicament therein, a substantially stationary member disposed within the lumen of the retractable chamber and having a uniform cross-section sized to provide a sliding fit within the lumen suitable to provide for retraction of the retractable chamber about the substantially stationary member upon actuation of the device; and means for retracting the retractable chamber about the substantially stationary member while maintaining the substantially stationary member in a substantially stationary position upon actuation of the device.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 11, 2009
    Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello
  • Publication number: 20090142727
    Abstract: The invention includes a device for inserting a medicament within a body cavity of a mammal, the device including a cartridge for containing the medicament therein, the cartridge including a housing, a retractable chamber disposed within the housing and having a lumen, a substantially stationary member disposed within the lumen of the retractable chamber and having a uniform cross-section sized to provide a sliding fit within the lumen to provide for retraction of the retractable chamber about the substantially stationary member upon actuation of the device, and means for retracting the retractable chamber about the substantially stationary member while maintaining the substantially stationary member in a substantially stationary position upon actuation of the device; the device further including means for activating the means for retracting the retractable chamber.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 4, 2009
    Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik deBrun
  • Publication number: 20090142728
    Abstract: The invention includes an actuator for actuating a device for inserting a medicament within a body cavity of a mammal, the actuator including a handle case having a proximal portion for gripping and a distal portion including means for attaching the actuator to a cartridge for containing medicament, and means for creating a proximal to distal linear motion with respect to the handle case, wherein the cartridge includes a retractable chamber for containing the medicament disposed therein, a substantially stationary member and means for retracting the retractable chamber about the substantially stationary member while maintaining the substantially stationary member in a substantially stationary position.
    Type: Application
    Filed: December 2, 2008
    Publication date: June 4, 2009
    Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik deBrun
  • Publication number: 20070298113
    Abstract: The present invention is directed to absorbable microspheres comprising a copolymer formed from greater than 88 to about 99 mole percent ?-caprolactone or p-dioxanone, and about 1 to less than 12 mole percent of a different second monomer selected from the group consisting of glycolide, p-dioxanone, trimethylene carbonate and the lactides and combinations thereof, said microspheres having a particle size ranging from about 5 to 2,000 microns. Also described herein are a method for making such microspheres and formulations comprising such absorbable microspheres.
    Type: Application
    Filed: June 22, 2006
    Publication date: December 27, 2007
    Inventors: Modesto Erneta, Zhangwen Wu
  • Publication number: 20070141160
    Abstract: A method of treatment of osteoarthritis is described, where a therapeutically effective amount of a composition having biodegradable microparticles in an aqueous vehicle is delivered into the intra-articular space of a joint. In one aspect, the microparticle-containing composition is injected into the synovial fluid-containing portion of an affected joint.
    Type: Application
    Filed: December 15, 2005
    Publication date: June 21, 2007
    Inventors: Laura Brown, Han Cui, Zhangwen Wu