Patents by Inventor Dengzhu Yan

Dengzhu Yan 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: 10786256
    Abstract: According to an embodiment of the present disclosure, a medical device for deploying a ligation band may include a tubular body. The tubular body may include a proximal end, a distal end, a radially inner surface defining a lumen through the tubular body, and a radially outer surface. The radially outer surface may include protrusions arranged in rows extending at least partially around a proximal region of the radially outer surface. Protrusions in adjacent rows may be separated by a first distance. Surface features may extend at least partially around a distal region of the radially outer surface. Adjacent surface features may be separated by a second distance larger than the first distance.
    Type: Grant
    Filed: October 3, 2018
    Date of Patent: September 29, 2020
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Paul Smith, Andrew Schaubhut, Oscar R. Carrillo, Jr., John B. Golden, Brad M. Isaacson, Michael D. Amos, Norman C. May, Dengzhu Yan, James Weldon, Daniel Congdon
  • Publication number: 20190029690
    Abstract: According to an embodiment of the present disclosure, a medical device for deploying a ligation band may include a tubular body. The tubular body may include a proximal end, a distal end, a radially inner surface defining a lumen through the tubular body, and a radially outer surface. The radially outer surface may include protrusions arranged in rows extending at least partially around a proximal region of the radially outer surface. Protrusions in adjacent rows may be separated by a first distance. Surface features may extend at least partially around a distal region of the radially outer surface. Adjacent surface features may be separated by a second distance larger than the first distance.
    Type: Application
    Filed: October 3, 2018
    Publication date: January 31, 2019
    Inventors: Paul SMITH, Andrew Schaubhut, Oscar R. Carrillo, JR., John B. Golden, Brad M. Isaacson, Michael D. Amos, Norman C. May, Dengzhu Yan, James Weldon, Daniel Congdon
  • Patent number: 10105143
    Abstract: According to an embodiment of the present disclosure, a medical device for deploying a ligation band may include a tubular body. The tubular body may include a proximal end, a distal end, a radially inner surface defining a lumen through the tubular body, and a radially outer surface. The radially outer surface may include protrusions arranged in rows extending at least partially around a proximal region of the radially outer surface. Protrusions in adjacent rows may be separated by a first distance. Surface features may extend at least partially around a distal region of the radially outer surface. Adjacent surface features may be separated by a second distance larger than the first distance.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: October 23, 2018
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Paul Smith, Andrew Schaubhut, Oscar R. Carrillo, Jr., John B. Golden, Brad M. Isaacson, Michael D. Amos, Norman C. May, Dengzhu Yan, James Weldon, Daniel Congdon
  • Publication number: 20150359624
    Abstract: An intraocular lens delivery system includes an injector body having a bore surrounded by an inner wall. The system further includes a plunger configured to fit within the bore. The system also includes a plurality of deflectable members connected to the plunger and configured to contact the inner wall and to be deflected when the plunger is inserted within the bore. The deflectable members center the shaft and, when inserted within the injector body, contribute to producing a predetermined force resisting advancement of the plunger when deflected in the bore.
    Type: Application
    Filed: November 16, 2012
    Publication date: December 17, 2015
    Applicant: Novartis AG
    Inventors: David A. Downer, Kyle Brown, Dengzhu Yan, Marshall Keith Proulx, Sushant Muchhala, Tu Cam Tran
  • Patent number: 8961531
    Abstract: An intraocular lens (IOL) transfer case for transferring an IOL to an injection cartridge includes a lens holder for holding the IOL. The lens holder includes a bore. Folding members within the lens holder are configured to fold the IOL into a partially folded position when the IOL is slid through the bore across the folding members. The IOL transfer case also includes an interface configured to removably connect to an injection cartridge. The interface is positioned to deliver the IOL in the partially folded position within the injection cartridge when the interface is connected to the injection cartridge. The IOL transfer case also includes a plunger connected to the lens holder and configured to push the IOL in the partially folded position through the bore to deliver the IOL into the injection cartridge.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: February 24, 2015
    Assignee: Novartis AG
    Inventors: Kyle Brown, Dengzhu Yan, David Downer
  • Publication number: 20140364873
    Abstract: According to an embodiment of the present disclosure, a medical device for deploying a ligation band may include a tubular body. The tubular body may include a proximal end, a distal end, a radially inner surface defining a lumen through the tubular body, and a radially outer surface. The radially outer surface may include protrusions arranged in rows extending at least partially around a proximal region of the radially outer surface. Protrusions in adjacent rows may be separated by a first distance. Surface features may extend at least partially around a distal region of the radially outer surface. Adjacent surface features may be separated by a second distance larger than the first distance.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 11, 2014
    Inventors: Paul SMITH, Andrew SCHAUBHUT, Oscar R. CARRILLO, JR., John B. GOLDEN, Brad M. ISAACSON, Michael D. AMOS, Norman C. MAY, Dengzhu YAN, James WELDON, Daniel CONGDON
  • Publication number: 20140142586
    Abstract: An intraocular lens delivery system includes an injector body having a bore surrounded by an inner wall. The system further includes a plunger configured to fit within the bore. The system also includes a plurality of deflectable members connected to the plunger and configured to contact the inner wall and to be deflected when the plunger is inserted within the bore. The deflectable members center the shaft and, when inserted within the injector body, contribute to producing a predetermined force resisting advancement of the plunger when deflected in the bore.
    Type: Application
    Filed: November 16, 2012
    Publication date: May 22, 2014
    Applicant: Novartis AG
    Inventors: David A. Downer, Kyle Brown, Dengzhu Yan, Marshall Keith Proulx, Sushant Muchhala, Tu Cam Tran
  • Patent number: 8377076
    Abstract: An intraocular lens delivery system includes an injector body having a bore surrounded by an inner wall. The system further includes a plunger configured to fit within the bore. The system also includes a plurality of deflectable members connected to the plunger and configured to contact the inner wall and to be deflected when the plunger is inserted within the bore. The deflectable members center the shaft and, when inserted within the injector body, contribute to producing a predetermined force resisting advancement of the plunger when deflected in the bore.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: February 19, 2013
    Assignee: Novartis AG
    Inventors: David Anthony Downer, Kyle Brown, Dengzhu Yan, Marshall Keith Proulx, Sushant Muchhala, Tu Cam Tran
  • Publication number: 20120158007
    Abstract: An intraocular lens (IOL) transfer case for transferring an IOL to an injection cartridge includes a lens holder for holding the IOL. The lens holder includes a bore. Folding members within the lens holder are configured to fold the IOL into a partially folded position when the IOL is slid through the bore across the folding members. The IOL transfer case also includes an interface configured to removably connect to an injection cartridge. The interface is positioned to deliver the IOL in the partially folded position within the injection cartridge when the interface is connected to the injection cartridge. The IOL transfer case also includes a plunger connected to the lens holder and configured to push the IOL in the partially folded position through the bore to deliver the IOL into the injection cartridge.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 21, 2012
    Inventors: Kyle Brown, Dengzhu Yan, David Downer
  • Patent number: 8105332
    Abstract: A lens delivery system handpiece having a threaded plunger rod with a ball lock ring. Locking the ring causes the plunger to be advanced by turning a thumbscrew or knob. Unlocking the ring allows the plunger to be advanced by pushing on the thumbscrew or knob in a manner similar to a syringe.
    Type: Grant
    Filed: October 30, 2007
    Date of Patent: January 31, 2012
    Assignee: Novartis AG
    Inventors: David A. Downer, Dengzhu Yan
  • Publication number: 20100312254
    Abstract: An intraocular lens delivery system includes an injector body having a bore surrounded by an inner wall. The system further includes a plunger configured to fit within the bore. The system also includes a plurality of deflectable members connected to the plunger and configured to contact the inner wall and to be deflected when the plunger is inserted within the bore. The deflectable members center the shaft and, when inserted within the injector body, contribute to producing a predetermined force resisting advancement of the plunger when deflected in the bore.
    Type: Application
    Filed: June 3, 2010
    Publication date: December 9, 2010
    Inventors: David Anthony Downer, Kyle Brown, Dengzhu Yan, Marshall Keith Proulx, Sushant Muchhala, Tu Cam Tran
  • Publication number: 20090112223
    Abstract: A lens delivery system handpiece having a threaded plunger rod with a ball lock ring. Locking the ring causes the plunger to be advanced by turning a thumbscrew or knob. Unlocking the ring allows the plunger to be advanced by pushing on the thumbscrew or knob in a manner similar to a syringe.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 30, 2009
    Inventors: David A. Downer, Dengzhu Yan
  • Publication number: 20080255577
    Abstract: A cartridge for an IOL delivery system that has a straight thinned walled distal nozzle. The transition region between the tapered folding portion of the cartridge and the nozzle contain reinforcing gussets to help prevent splitting of the cartridge. Flow leaders in the nozzle direct the flow of material during molding at the 12:00 o'clock position, positioning the weld line of the flow front at the 6:00 o'clock position.
    Type: Application
    Filed: April 11, 2007
    Publication date: October 16, 2008
    Inventors: David A. Downer, Kyle Brown, Sushant Muchhala, Tu Cam Tran, Dengzhu Yan