Patents by Inventor Jeong S. Lee
Jeong S. Lee 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: 20140142505Abstract: Multilayer balloon for a catheter comprises a first layer made of a first polymer material having a first Shore durometer hardness, a second layer made of a second polymer material having a second Shore durometer hardness greater than the first Shore durometer hardness, wherein the second layer is an inner layer relative to the first layer, and a third layer made of a third polymer material having a third Shore durometer hardness less the first Shore durometer hardness, wherein the third layer is an inner layer relative to the second layer. Method of making a multilayer balloon for a catheter and a balloon catheter are also provided.Type: ApplicationFiled: November 19, 2012Publication date: May 22, 2014Applicant: Abbott Cardiovascular Systems Inc.Inventors: Tung-Liang Lin, Jeong S. Lee, Roseminda White
-
Publication number: 20140081310Abstract: A multilayer balloon catheter is formed to have an inner layer and an outer layer, where the outer layer is adapted to resist shredding and premature rupture. The outer layer is formed of a material having a glass transition temperature that is lower than the transition or melting temperature of the inner layer. By forming the balloon on a mold at a temperature between the glass transition temperature of the outer layer and the glass transition or melting temperature of the inner layer, the outer layer will undergo a thermal relaxation that will alleviate some of the axial orientation of the polymer chains that develop during the formation of the multilayer balloon. This relaxation leads to a resistance to shredding when the balloon is expanded during operation.Type: ApplicationFiled: November 19, 2013Publication date: March 20, 2014Applicant: ABBOTT CARDIOVASCULAR SYSTEMS, INC.Inventors: Jeong S. Lee, Fortino Vasquez Flores
-
Publication number: 20140074020Abstract: Method for fabricating a balloon catheter including providing an inner tubular member having a distal section and a distal end with a lumen extending therein and forming a balloon having a distal leg with a first segment having a first diameter and a first wall thickness and a second segment having a second wall thickness. The second diameter is greater than the first diameter and the first wall thickness is greater than the second wall thickness. The distal end section of the inner tubular member can be positioned in the balloon and bonded to the first segment while reducing the diameter of the second segment. Method also provided for fabricating a multilayer balloon catheter including removing at least a portion of an outer layer from the distal leg of the balloon.Type: ApplicationFiled: September 11, 2012Publication date: March 13, 2014Inventors: Kenneth L. Wantink, Jeong S. Lee, Justin K. Mann
-
Patent number: 8613722Abstract: A multilayer balloon catheter is formed to have an inner layer and an outer layer, where the outer layer is adapted to resist shredding and premature rupture. The outer layer is formed of a material having a glass transition temperature that is lower than the transition or melting temperature of the inner layer. By forming the balloon on a mold at a temperature between the glass transition temperature of the outer layer and the glass transition or melting temperature of the inner layer, the outer layer will undergo a thermal relaxation that will alleviate some of the axial orientation of the polymer chains that develop during the formation of the multilayer balloon. This relaxation leads to a resistance to shredding when the balloon is expanded during operation.Type: GrantFiled: September 22, 2011Date of Patent: December 24, 2013Assignee: Abbott Cardiovascular Systems, Inc.Inventors: Jeong S. Lee, Fortino Vasquez Flores
-
Publication number: 20130253425Abstract: A balloon catheter having a multilayer catheter shaft is formed to have an inner layer and an outer layer, where the inner layer and outer layer are selected from materials that enhance the pushability of the catheter while preserving the flexibility. Using a combination of a high Shore D duromater value material and a lower Shore D duromater value material, various combinations of multilayer catheter shafts are disclosed utilizing different glass transition temperatures and block copolyamides to obtain the desired characteristics.Type: ApplicationFiled: May 20, 2013Publication date: September 26, 2013Applicant: Abbott Cardiovascular Systems, Inc.Inventors: Thomas Haslinger, Jeong S. Lee, Neftali Fernandez, John A. Simpson
-
Patent number: 8444608Abstract: A balloon catheter having a multilayer catheter shaft is formed to have an inner layer and an outer layer, where the inner layer and outer layer are selected from materials that enhance the pushability of the catheter while preserving the flexibility. Using a combination of a high Shore D duromater value material and a lower Shore D duromater value material, various combinations of multilayer catheter shafts are disclosed utilizing different glass transition temperatures and block copolyamides to obtain the desired characteristics.Type: GrantFiled: June 5, 2009Date of Patent: May 21, 2013Assignee: Abbott Cardivascular Systems, Inc.Inventors: Thomas Haslinger, Jeong S. Lee, Neftali Fernandez, John Simpson
-
Patent number: 8444802Abstract: A balloon catheter having a soft distal tip member having a non-tacky inner (liner) layer material and a soft flexible outer layer material, with both materials being readily thermally bondable to the catheter balloon.Type: GrantFiled: May 19, 2009Date of Patent: May 21, 2013Assignee: Abbott Cardiovascular Systems Inc.Inventors: Jeong S. Lee, Kenneth L. Wantink
-
Patent number: 8388640Abstract: A catheter having an elongated shaft which has a multilayered distal tip with a first layer formed of a polyimide first material and a second layer formed of a polymeric second material. In one embodiment the multilayered distal tip is a separate member, distal to the distal end of a proximal portion of the shaft. In another embodiment, the shaft has an outer tubular member, and a multilayered inner tubular member with a distal end which forms the multilayered distal tip of the shaft. In a presently preferred embodiment, the polyimide material is a thermoset polyimide. In one embodiment, the polymeric second material is a polyamide material.Type: GrantFiled: December 12, 2011Date of Patent: March 5, 2013Assignee: Abbott Cardiovascular Systems Inc.Inventors: Jeong S. Lee, Edwin Wang
-
Patent number: 8308711Abstract: A catheter which has an elongated shaft having a layer of an ultra high molecular weight polyolefin, such as a melt-extruded ultra high molecular weight polyethylene (UHMWPE). The UHMWPE, forming at least in part a surface of the shaft, facilitates sliding a blood/contrast coated device along the shaft surface, and preferably substantially prevents or inhibits agglomerations of blood and contrast from adhering to the surface of the shaft in a patient's body lumen. In a presently preferred embodiment, the layer has a lubricious coating, such that the coated surface of the UHMWPE layer significantly decreases the force produced by the blood/contrast coated device sliding along the coated surface.Type: GrantFiled: March 6, 2006Date of Patent: November 13, 2012Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Jeong S. Lee, Kenneth L. Wantink, Roseminda White
-
Patent number: 8221444Abstract: An elongated balloon catheter having a distal tip member on the distal end of the catheter and having a sleeve surrounding and secured at least to the proximal end of the distal tip member.Type: GrantFiled: November 14, 2008Date of Patent: July 17, 2012Assignee: Abbott Cardiovascular Systems Inc.Inventors: Edwin Wang, Roseminda J. White, Jeong S. Lee, Tim Kitchen
-
Publication number: 20120083732Abstract: A catheter having an elongated shaft which has a multilayered distal tip with a first layer formed of a polyimide first material and a second layer formed of a polymeric second material. In one embodiment the multilayered distal tip is a separate member, distal to the distal end of a proximal portion of the shaft. In another embodiment, the shaft has an outer tubular member, and a multilayered inner tubular member with a distal end which forms the multilayered distal tip of the shaft. In a presently preferred embodiment, the polyimide material is a thermoset polyimide. In one embodiment, the polymeric second material is a polyamide material.Type: ApplicationFiled: December 12, 2011Publication date: April 5, 2012Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Jeong S. Lee, Edwin Wang
-
Publication number: 20120065586Abstract: A multilayer balloon catheter is formed to have an inner layer and an outer layer, where the outer layer is adapted to resist shredding and premature rupture. The outer layer is formed of a material having a glass transition temperature that is lower than the transition or melting temperature of the inner layer. By forming the balloon on a mold at a temperature between the glass transition temperature of the outer layer and the glass transition or melting temperature of the inner layer, the outer layer will undergo a thermal relaxation that will alleviate some of the axial orientation of the polymer chains that develop during the formation of the multilayer balloon. This relaxation leads to a resistance to shredding when the balloon is expanded during operation.Type: ApplicationFiled: September 22, 2011Publication date: March 15, 2012Inventors: Jeong S. Lee, Fortino Vasquez Flores
-
Publication number: 20120053565Abstract: An infusion catheter and method, with an elongated shaft having a guidewire lumen which has a proximal section and a common distal section extending to a distal port at a distal end of the shaft, and an infusion lumen which is in fluid communication with the distal port of the guidewire lumen and which joins the common distal section of the guidewire lumen at a location distal to the guidewire proximal port. A restricted passage from the infusion lumen to the common distal section of the guidewire lumen has a smaller transverse dimension than the guidewire lumen and a guidewire slidably disposed in the guidewire lumen.Type: ApplicationFiled: September 13, 2011Publication date: March 1, 2012Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventor: Jeong S. Lee
-
Patent number: 8075583Abstract: A catheter having an elongated shaft which has a multilayered distal tip with a first layer formed of a polyimide first material and a second layer formed of a polymeric second material. In one embodiment the multilayered distal tip is a separate member, distal to the distal end of a proximal portion of the shaft. In another embodiment, the shaft has an outer tubular member, and a multilayered inner tubular member with a distal end which forms the multilayered distal tip of the shaft. In a presently preferred embodiment, the polyimide material is a thermoset polyimide. In one embodiment, the polymeric second material is a polyamide material.Type: GrantFiled: September 28, 2005Date of Patent: December 13, 2011Assignee: Abbott Cardiovascular Systems Inc.Inventors: Jeong S. Lee, Edwin Wang
-
Patent number: 8070719Abstract: Balloon catheter comprises a shaft having a proximal end, a distal end, and an inflation lumen extending therein, and a balloon on the shaft which has an interior in fluid communication with the inflation lumen. The balloon is formed of a blend of polymeric materials comprising a transparent amorphous nylon having a Shore D duromcter hardness of not less than 77D and being not more than about 40% by weight of the blend, and a polyamide or a polyether block amide having a Shore D duromcter hardness of no more than 73D. An increase in radial diameter of the balloon above nominal pressure for one atmosphere of pressure is no greater than 0.025 mm/atm. A guidewire catheter is also provided.Type: GrantFiled: November 26, 2008Date of Patent: December 6, 2011Assignee: Abbott Cardiovascular Systems, Inc.Inventor: Jeong S. Lee
-
Patent number: 8052638Abstract: A multilayer balloon catheter is formed to have an inner layer and an outer layer, where the outer layer is adapted to resist shredding and premature rupture. The outer layer is formed of a material having a glass transition temperature that is lower than the transition or melting temperature of the inner layer. By forming the balloon on a mold at a temperature between the glass transition temperature of the outer layer and the glass transition or melting temperature of the inner layer, the outer layer will undergo a thermal relaxation that will alleviate some of the axial orientation of the polymer chains that develop during the formation of the multilayer balloon. This relaxation leads to a resistance to shredding when the balloon is expanded during operation.Type: GrantFiled: June 5, 2009Date of Patent: November 8, 2011Assignee: Abbott Cardiovascular Systems, Inc.Inventors: Jeong S. Lee, Fortino Vasquez Flores
-
Patent number: 8021328Abstract: An infusion catheter and method, with an elongated shaft having a guidewire lumen which has a proximal section and a common distal section extending to a distal port at a distal end of the shaft, and an infusion lumen which is in fluid communication with the distal port of the guidewire lumen and which joins the common distal section of the guidewire lumen at a location distal to the guidewire proximal port. A restricted passage from the infusion lumen to the common distal section of the guidewire lumen has a smaller transverse dimension than the guidewire lumen and a guidewire slidably disposed in the guidewire lumen.Type: GrantFiled: March 5, 2007Date of Patent: September 20, 2011Assignee: Abbott Cardiocascular Systems Inc.Inventor: Jeong S. Lee
-
Patent number: 7981244Abstract: A balloon catheter and a method of making a balloon catheter, having a balloon with a first layer and a second layer, the first layer having at least one impregnated section impregnated with a polymeric material compatible with a polymeric material forming the catheter shaft. At least a portion of the impregnated section is fusion bonded to the shaft. In a presently preferred embodiment, the impregnated section is adjacent to a section of the first layer which is not impregnated with the compatible polymeric material. The impregnated section provides improved bonding of the balloon to the catheter shaft while minimizing the effect of the bond on catheter performance characteristics such as profile and flexibility.Type: GrantFiled: October 23, 2006Date of Patent: July 19, 2011Assignee: Abbott Cardiovascular Systems Inc.Inventors: Florencia Lim, Jeong S Lee, Edwin Wang
-
Patent number: 7833193Abstract: One aspect of the invention is directed to a balloon catheter with a multilayered polymeric sleeve at the rapid exchange intermediate section, having an outer layer formed of a polymer with a relatively low processing temperature (i.e., melting temperature for semi-crystalline polymers or glass transition temperature for amorphous polymers), and having an inner layer.Type: GrantFiled: January 14, 2010Date of Patent: November 16, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventor: Jeong S. Lee
-
Patent number: 7783338Abstract: An apparatus and method to perform therapeutic treatment and diagnosis of a patient's vasculature through the use of an intravascular device having an optical fiber disposed therein. In an embodiment, the apparatus includes an intravascular device to perform a therapeutic treatment and at least one optical fiber disposed through the intravascular device. The optical fiber is configured to provide diagnostic information before, during, and after the therapeutic treatment. In an embodiment, diagnostic information includes vessel and blood characteristics such as hemodynamic characteristics, hematological parameters related to blood and blood components, and thermal parameters of the vasculature.Type: GrantFiled: January 9, 2008Date of Patent: August 24, 2010Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Robert Ainsworth, Deborah Kilpatrick, Jeong S. Lee, Bridget A. Hurley, Jeffrey T. Ellis