Patents by Inventor E Tina Cheng

E Tina Cheng 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: 20080103589
    Abstract: The present invention is directed to a flexible expandable stent for implantation in a body lumen, such as a coronary artery. The stent generally includes a series of metallic cylindrical rings longitudinally aligned on a common axis of the stent and interconnected by a series of links which be polymeric or metallic. Varying configurations and patterns of the links and rings provides longitudinal and flexural flexibility to the stent while maintaining sufficient column strength to space the cylindrical rings along the longitudinal axis and providing a low crimp profile, enhanced stent security and radial stiffness.
    Type: Application
    Filed: January 7, 2008
    Publication date: May 1, 2008
    Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.
    Inventors: E Tina Cheng, Santosh Prabhu, Kyle Krueger, Diem Ta, Carla Pienknagura
  • Patent number: 7316710
    Abstract: The present invention is directed to a flexible expandable stent for implantation in a body lumen, such as a coronary artery. The stent generally includes a series of metallic cylindrical rings longitudinally aligned on a common axis of the stent and interconnected by a series of links which be polymeric or metallic. Varying configurations and patterns of the links and rings provides longitudinal and flexural flexibility to the stent while maintaining sufficient column strength to space the cylindrical rings along the longitudinal axis and providing a low crimp profile, enhanced stent security and radial stiffness.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: January 8, 2008
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: E Tina Cheng, Santosh Prabhu, Kyle Marie Krueger, Diem Uyen Ta, Carla Rosa Pienknagura
  • Patent number: 7291166
    Abstract: Patterns for polymeric radially expandable implantable medical devices such as stents for implantation into a bodily lumen are disclosed. Some patterns comprise radially expandable cylindrical rings that are longitudinally aligned, each ring comprising diamond-shaped elements, each formed by four linear bar arms. The patterns con also comprise a cross-like element comprising four linear bar arms interconnected within the diamond-shaped elements, and at least one link between adjacent rings. In other patterns, the rings comprise peaks and valleys formed by linear bar arms. wherein pairs of rings are configured such that the peaks of one pair are connected to the valleys of the other pair at apices of the peaks and valleys to form diamond shaped regions. In yet other patterns, there are two v-shaped elements formed by two short bar arms within the diamond-shaped elements, and a connecting bar arm connecting the two v-shaped elements.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: November 6, 2007
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: E. Tina Cheng, Rosabel Chang
  • Patent number: 7273492
    Abstract: An intravascular stent assembly for implantation in a body lumen, such as a coronary artery, is designed to treat a lesion with vulnerable plaque by reducing the fibrous cap stresses. The stent includes distal, proximal, and center sections where the center section is configured to treat the vulnerable plaque. The stent consists of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and either directly connected or interconnected by one or more interconnecting links placed so that the stent is flexible in the longitudinal direction while providing high degrees of radial strength and vessel scaffolding.
    Type: Grant
    Filed: June 17, 2003
    Date of Patent: September 25, 2007
    Assignee: Advanced Cardiovascular Systems Inc.
    Inventors: E Tina Cheng, Daniel L. Cox
  • Publication number: 20060265048
    Abstract: Patterns for polymeric radially expandable implantable medical devices such as stents for implantation into a bodily lumen are disclosed.
    Type: Application
    Filed: May 18, 2005
    Publication date: November 23, 2006
    Inventors: E. Tina Cheng, Rosabel Chang
  • Patent number: 6929660
    Abstract: The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by links with apertures and/or undulating links. The apertured links and undulating links provide the stent with a high degree of flexibility in the longitudinal direction, yet the stent has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: August 16, 2005
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Ainsworth, E Tina Cheng
  • Patent number: 6869442
    Abstract: An expandable stent including a light and water curable resin embedded in a stent wall wherein the wall is formed to be transmissive to light for curing the resin and transmissive to fluid for further curing of the resin. A catheter delivery system may be provided for in vivo delivery, expansion, rigidization, and installation of the stent into a body lumen.
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: March 22, 2005
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventor: E Tina Cheng
  • Patent number: 6805707
    Abstract: The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by links. The rings are defined by undulations of relatively large and relatively small amplitudes wherein bar arms extend between peaks and valleys and wherein selected bar arms are non-linear. The links connecting the cylindrical rings are non-linear.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: October 19, 2004
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: James Hong, Sharon Segvich, E Tina Cheng, Napoleon Caliguiran
  • Publication number: 20040172128
    Abstract: The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by links. The rings have peaks and valleys from which extend straight and nonlinear bar arms, forming a figure-eight The links connecting the cylindrical rings may be straight, undulating, or include bounded apertures for additional flexibility.
    Type: Application
    Filed: March 3, 2004
    Publication date: September 2, 2004
    Inventors: James Hong, E Tina Cheng, Stephen D. Ainsworth
  • Patent number: 6776794
    Abstract: An expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen is provided. An intravascular stent is formed by cylindrical rings connected by links. The rings have peaks and valleys from which extend straight and nonlinear bar arms, forming a figure-eight. An elemental unit is defined with straight and nonlinear bar arms, and elemental units on adjacent rings are mirror images of one another. The links have one end connected at a peak of one ring and the other end connected to a central portion of a nonlinear bar arm. Alternating rows of the links consist of nonlinear links.
    Type: Grant
    Filed: November 28, 2001
    Date of Patent: August 17, 2004
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: James Hong, Sharon Segvich, E Tina Cheng, Napoleon Caliguiran
  • Patent number: 6749629
    Abstract: The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by links. The rings have peaks and valleys from which extend straight and nonlinear bar arms, forming a figure-eight. The links connecting the cylindrical rings may be straight, undulating, or include bounded apertures for additional flexibility.
    Type: Grant
    Filed: June 27, 2001
    Date of Patent: June 15, 2004
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: James Hong, E Tina Cheng, Stephen D. Ainsworth
  • Publication number: 20040044400
    Abstract: An intravascular stent assembly for implantation in a body lumen, such as a coronary artery, is designed to treat a lesion with vulnerable plaque by reducing the fibrous cap stresses. The stent includes distal, proximal, and center sections where the center section is configured to treat the vulnerable plaque. The stent consists of radially expandable cylindrical rings generally aligned on a common longitudinal stent axis and either directly connected or interconnected by one or more interconnecting links placed so that the stent is flexible in the longitudinal direction while providing high degrees of radial strength and vessel scaffolding.
    Type: Application
    Filed: June 17, 2003
    Publication date: March 4, 2004
    Inventors: E. Tina Cheng, Daniel L. Cox
  • Publication number: 20030199968
    Abstract: The invention is directed to an expandable stent for implantating in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for a an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen.
    Type: Application
    Filed: May 15, 2003
    Publication date: October 23, 2003
    Inventors: Stephen D. Ainsworth, E. Tina Cheng, James M. Jacobs
  • Patent number: 6635083
    Abstract: The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for a an intravascular stent having a plurality of cylindrical rings connected by undulating links. The plurality of cylindrical rings may assume an undulating shape that is similar to the shape of the undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: October 21, 2003
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: E Tina Cheng, Suzanne Wallace George, Timothy A. Limon, Orlando M. Padilla
  • Patent number: 6626935
    Abstract: This invention is directed to an expandable stent for implanting in a body lumen. The invention provides for an intravascular stent having cylindrical rings and a plurality of flexible spring joints linking the rings together. The flexible spring joints enable components of the stent to be large enough to provide excellent radiopaque and vessel supporting capabilities. The stent is flexible along its length and about its longitudinal axis while maintaining stiffness in the radial direction in order to resist collapse once implanted.
    Type: Grant
    Filed: December 21, 2000
    Date of Patent: September 30, 2003
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Ainsworth, E Tina Cheng
  • Patent number: 6616689
    Abstract: The invention is directed to an expandable stent for implantating in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for a an intravascular stent having a plurality of cylindrical rings connected by undulating links. The stent has a high degree of flexibility in the longitudinal direction, yet has adequate vessel wall coverage and radial strength sufficient to hold open an artery or other body lumen.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: September 9, 2003
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Ainsworth, E Tina Cheng, James M. Jacobs
  • Publication number: 20030114914
    Abstract: An expandable stent including a light and water curable resin embedded in a stent wall wherein the wall is formed to be transmissive to light for curing the resin and transmissive to fluid for further curing of the resin. A catheter delivery system may be provided for in vivo delivery, expansion, rigidization, and installation of the stent into a body lumen.
    Type: Application
    Filed: November 26, 2002
    Publication date: June 19, 2003
    Inventor: E. Tina Cheng
  • Patent number: 6514284
    Abstract: A stent having an expandable inner layer and a channel thereon to direct blood flow and induce a rotational motion therein, thereby increasing the speed of blood flowing through the stent and reducing the likelihood of blood clotting, thrombosis, and restenosis.
    Type: Grant
    Filed: April 20, 2000
    Date of Patent: February 4, 2003
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventor: E Tina Cheng
  • Publication number: 20030014102
    Abstract: The invention is directed to an expandable stent for implanting in a body lumen, such as a coronary artery, peripheral artery, or other body lumen. The invention provides for an intravascular stent having a plurality of cylindrical rings connected by links. The rings have peaks and valleys from which extend straight and nonlinear bar arms, forming a figure-eight. The links connecting the cylindrical rings may be straight or undulating.
    Type: Application
    Filed: October 12, 2001
    Publication date: January 16, 2003
    Inventors: James Hong, E. Tina Cheng
  • Patent number: 6485512
    Abstract: An expandable stent including a light and water curable resin embedded in a stent wall wherein the wall is formed to be transmissive to light for curing the resin and transmissive to fluid for further curing of the resin. A catheter delivery system may be provided for in vivo delivery, expansion, rigidization, and installation of the stent into a body lumen.
    Type: Grant
    Filed: September 27, 2000
    Date of Patent: November 26, 2002
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventor: E Tina Cheng