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).
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Patent number: 9566141Abstract: 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: GrantFiled: August 26, 2013Date of Patent: February 14, 2017Assignee: Orapharma, Inc.Inventors: Zhangwen Wu, Michael J. Rello, James F. Hooper, James R. Lawter
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Patent number: 9119902Abstract: 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: GrantFiled: June 22, 2006Date of Patent: September 1, 2015Assignee: Ethicon, Inc.Inventors: Modesto Erneta, Zhangwen Wu
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Publication number: 20140093839Abstract: 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: ApplicationFiled: August 26, 2013Publication date: April 3, 2014Applicant: Orapharma, Inc.Inventors: Zhangwen WU, Michael J. RELLO, James F. HOOPER, James R. LAWTER
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Patent number: 8480615Abstract: 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: GrantFiled: June 17, 2011Date of Patent: July 9, 2013Assignee: Orapharma, Inc.Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik DeBrun
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Publication number: 20120010561Abstract: 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: ApplicationFiled: September 20, 2011Publication date: January 12, 2012Applicant: ORAPHARMA, INC.Inventors: Zhangwen Wu, Michael J. Rello, James F. Hopper, JR., James R. Lawter
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Patent number: 8048021Abstract: 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: GrantFiled: November 19, 2009Date of Patent: November 1, 2011Assignee: Orapharma, Inc.Inventors: Zhangwen Wu, Michael J. Rello, James F. Hooper, Jr., James R. Lawter
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Publication number: 20110245764Abstract: 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: ApplicationFiled: June 17, 2011Publication date: October 6, 2011Inventors: James R. LAWTER, Zhangwen WU, Michael J. RELLO, Charles D. FAUST, Erik deBRUN
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Patent number: 7976490Abstract: 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: GrantFiled: December 2, 2008Date of Patent: July 12, 2011Assignee: Orapharma, Inc.Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello
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Patent number: 7976491Abstract: 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: GrantFiled: December 2, 2008Date of Patent: July 12, 2011Assignee: OraPharma, Inc.Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik deBrun
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Patent number: 7976489Abstract: 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: GrantFiled: December 2, 2008Date of Patent: July 12, 2011Assignee: OraPharma, Inc.Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik deBrun
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Patent number: 7964211Abstract: 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: GrantFiled: June 3, 2010Date of Patent: June 21, 2011Assignee: Ethicon, Inc.Inventors: Modesto Erneta, Zhangwen Wu
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Publication number: 20100240859Abstract: 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: ApplicationFiled: June 3, 2010Publication date: September 23, 2010Inventors: Modesto Erneta, Zhangwen Wu
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Publication number: 20100136502Abstract: 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: ApplicationFiled: November 19, 2009Publication date: June 3, 2010Inventors: Zhangwen WU, Michael J. Rello, James F. Hooper, JR., James R. Lawter
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Publication number: 20100016257Abstract: 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: ApplicationFiled: September 22, 2009Publication date: January 21, 2010Applicant: Ethicon, Inc.Inventors: Laura J. Brown, Han Cui, Zhangwen Wu
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Publication number: 20090148500Abstract: 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: ApplicationFiled: December 2, 2008Publication date: June 11, 2009Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello
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Publication number: 20090142727Abstract: 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: ApplicationFiled: December 2, 2008Publication date: June 4, 2009Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik deBrun
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Publication number: 20090142728Abstract: 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: ApplicationFiled: December 2, 2008Publication date: June 4, 2009Inventors: James R. Lawter, Zhangwen Wu, Michael J. Rello, Charles D. Faust, Erik deBrun
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Publication number: 20070298113Abstract: 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: ApplicationFiled: June 22, 2006Publication date: December 27, 2007Inventors: Modesto Erneta, Zhangwen Wu
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Publication number: 20070141160Abstract: 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: ApplicationFiled: December 15, 2005Publication date: June 21, 2007Inventors: Laura Brown, Han Cui, Zhangwen Wu