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: 20080103589Abstract: 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: ApplicationFiled: January 7, 2008Publication date: May 1, 2008Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: E Tina Cheng, Santosh Prabhu, Kyle Krueger, Diem Ta, Carla Pienknagura
-
Patent number: 7316710Abstract: 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: GrantFiled: December 30, 2002Date of Patent: January 8, 2008Assignee: Advanced Cardiovascular Systems, Inc.Inventors: E Tina Cheng, Santosh Prabhu, Kyle Marie Krueger, Diem Uyen Ta, Carla Rosa Pienknagura
-
Patent number: 7291166Abstract: 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: GrantFiled: May 18, 2005Date of Patent: November 6, 2007Assignee: Advanced Cardiovascular Systems, Inc.Inventors: E. Tina Cheng, Rosabel Chang
-
Patent number: 7273492Abstract: 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: GrantFiled: June 17, 2003Date of Patent: September 25, 2007Assignee: Advanced Cardiovascular Systems Inc.Inventors: E Tina Cheng, Daniel L. Cox
-
Publication number: 20060265048Abstract: Patterns for polymeric radially expandable implantable medical devices such as stents for implantation into a bodily lumen are disclosed.Type: ApplicationFiled: May 18, 2005Publication date: November 23, 2006Inventors: E. Tina Cheng, Rosabel Chang
-
Patent number: 6929660Abstract: 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: GrantFiled: December 22, 2000Date of Patent: August 16, 2005Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Stephen D. Ainsworth, E Tina Cheng
-
Patent number: 6869442Abstract: 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: GrantFiled: November 26, 2002Date of Patent: March 22, 2005Assignee: Advanced Cardiovascular Systems, Inc.Inventor: E Tina Cheng
-
Patent number: 6805707Abstract: 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: GrantFiled: December 27, 2001Date of Patent: October 19, 2004Assignee: Advanced Cardiovascular Systems, Inc.Inventors: James Hong, Sharon Segvich, E Tina Cheng, Napoleon Caliguiran
-
Publication number: 20040172128Abstract: 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: ApplicationFiled: March 3, 2004Publication date: September 2, 2004Inventors: James Hong, E Tina Cheng, Stephen D. Ainsworth
-
Patent number: 6776794Abstract: 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: GrantFiled: November 28, 2001Date of Patent: August 17, 2004Assignee: Advanced Cardiovascular Systems, Inc.Inventors: James Hong, Sharon Segvich, E Tina Cheng, Napoleon Caliguiran
-
Patent number: 6749629Abstract: 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: GrantFiled: June 27, 2001Date of Patent: June 15, 2004Assignee: Advanced Cardiovascular Systems, Inc.Inventors: James Hong, E Tina Cheng, Stephen D. Ainsworth
-
Publication number: 20040044400Abstract: 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: ApplicationFiled: June 17, 2003Publication date: March 4, 2004Inventors: E. Tina Cheng, Daniel L. Cox
-
Publication number: 20030199968Abstract: 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: ApplicationFiled: May 15, 2003Publication date: October 23, 2003Inventors: Stephen D. Ainsworth, E. Tina Cheng, James M. Jacobs
-
Patent number: 6635083Abstract: 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: GrantFiled: June 25, 2001Date of Patent: October 21, 2003Assignee: Advanced Cardiovascular Systems, Inc.Inventors: E Tina Cheng, Suzanne Wallace George, Timothy A. Limon, Orlando M. Padilla
-
Patent number: 6626935Abstract: 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: GrantFiled: December 21, 2000Date of Patent: September 30, 2003Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Stephen D. Ainsworth, E Tina Cheng
-
Patent number: 6616689Abstract: 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: GrantFiled: May 3, 2000Date of Patent: September 9, 2003Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Stephen D. Ainsworth, E Tina Cheng, James M. Jacobs
-
Publication number: 20030114914Abstract: 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: ApplicationFiled: November 26, 2002Publication date: June 19, 2003Inventor: E. Tina Cheng
-
Patent number: 6514284Abstract: 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: GrantFiled: April 20, 2000Date of Patent: February 4, 2003Assignee: Advanced Cardiovascular Systems, Inc.Inventor: E Tina Cheng
-
Publication number: 20030014102Abstract: 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: ApplicationFiled: October 12, 2001Publication date: January 16, 2003Inventors: James Hong, E. Tina Cheng
-
Patent number: 6485512Abstract: 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: GrantFiled: September 27, 2000Date of Patent: November 26, 2002Assignee: Advanced Cardiovascular Systems, Inc.Inventor: E Tina Cheng