Patents by Inventor Kenneth L. Wantink
Kenneth L. Wantink 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: 10426933Abstract: Balloon catheter includes an outer shaft including a hypotube and a monolithic multilayer distal outer member and having an inflation lumen defined therethrough, a balloon in fluid communication with the inflation lumen, and an inner tubular member having a guidewire lumen defined therethrough. The monolithic multilayer distal outer member has a proximal end portion and a distal end portion. The monolithic multilayer distal outer member has an inner layer comprising a first polymer having a tensile strength greater than about 8,000 psi and an outer layer comprising a second polymer having a flexural modulus of less than about 130,000 psi at room temperature. A proximal end of the monolithic multilayer distal outer member is coupled to the hypotube. The monolithic multilayer distal outer member is necked to a reduced diameter along at least a portion of a length thereof. The balloon has a proximal balloon shaft coupled to a distal end of the monolithic multilayer distal outer member.Type: GrantFiled: September 2, 2015Date of Patent: October 1, 2019Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Patent number: 9649474Abstract: 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: November 26, 2014Date of Patent: May 16, 2017Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Publication number: 20160339211Abstract: Balloon catheter includes an outer shaft including a hypotube and a monolithic multilayer distal outer member and having an inflation lumen defined therethrough, a balloon in fluid communication with the inflation lumen, and an inner tubular member having a guidewire lumen defined therethrough. The monolithic multilayer distal outer member has a proximal end portion and a distal end portion. The monolithic multilayer distal outer member has an inner layer comprising a first polymer having a tensile strength greater than about 8,000 psi and an outer layer comprising a second polymer having a flexural modulus of less than about 130,000 psi at room temperature. A proximal end of the monolithic multilayer distal outer member is coupled to the hypotube. The monolithic multilayer distal outer member is necked to a reduced diameter along at least a portion of a length thereof. The balloon has a proximal balloon shaft coupled to a distal end of the monolithic multilayer distal outer member.Type: ApplicationFiled: September 2, 2015Publication date: November 24, 2016Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Publication number: 20150290434Abstract: 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 18, 2013Publication date: October 15, 2015Applicant: ABBOTT CARDIOVASCULAR SYSTEM INC.Inventors: Tung-Liang Lin, Jeong S. Lee, Roseminda J. White, Kenneth L. Wantink
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Publication number: 20150088063Abstract: 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: ApplicationFiled: November 26, 2014Publication date: March 26, 2015Inventors: Jeong S. Lee, Kenneth L. Wantink
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Patent number: 8905967Abstract: 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: January 24, 2013Date of Patent: December 9, 2014Assignee: Abbott Cardiovascular Systems Inc.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Publication number: 20140358176Abstract: 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: August 19, 2014Publication date: December 4, 2014Inventors: Kenneth L. Wantink, Jeong S. Lee, Justin K. Mann
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Patent number: 8840743Abstract: 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: GrantFiled: September 11, 2012Date of Patent: September 23, 2014Assignee: Abbott Cardiovascular Systems Inc.Inventors: Kenneth L. Wantink, Jeong S. Lee, Justin K. Mann
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Publication number: 20140276401Abstract: Elongate, flexible catheter includes an elongated shaft having a proximal end, a distal end, and a lumen defined therein. The shaft includes a tubular member having an outer layer and an inner layer. The outer layer includes a first polymer selected from the group consisting of nylon 12, polyether block amide, and combinations thereof. The inner layer includes a second polymer having a heat deflection temperature greater than about 53° C. selected from the group consisting of nylon 11, nylon 6, nylon 6,6, nylon 6,12, polyamide-imide, polyetherimide, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polyethereetherketone, and combinations thereof. Method of making an elongate, flexible catheter is also provided.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Patent number: 8747940Abstract: Methods for forming a “coating gradient” on medical devices, such as a balloon catheter or guidewire are disclosed. The balloon portion of the catheter has a protective covering initially placed over it to prevent the balloon from receiving a first hydrophilic coating. After a first hydrophilic coating is applied, the protective covering is removed. A second hydrophilic coating could be applied to the catheter. A guidewire having less lubricity at the distal end portion also can be created. A first hydrophilic coating is applied to the elongated shaft and distal shaft section of the guidewire. After the first hydrophilic coating cures, the first hydrophilic coating is removed from a portion of the distal shaft section of the guidewire. A second hydrophillic coating can then be applied to the elongated shaft and distal shaft section of the guidewire. The second hydrophilic coating can be allowed to cure.Type: GrantFiled: January 24, 2013Date of Patent: June 10, 2014Assignee: Abbott Cardiovascular Systems Inc.Inventors: Jeong S. Lee, Kenneth L. Wantink
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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
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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
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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
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Publication number: 20090259289Abstract: A method of mounting a drug delivery stent on a balloon of a balloon catheter. The method securely mounts the drug delivery stent on the balloon without damaging the drug delivery layer of the stent. In one embodiment, the method generally comprises positioning a drug delivery stent on a balloon of a balloon catheter, and positioning the balloon with the drug delivery stent thereon within a polished bore of a mold formed at least in part of a metallic material. The balloon is pressurized and heated within the mold as the mold radially restrains the stent from expanding, to mount the stent on the balloon without damaging the drug delivery layer of the stent.Type: ApplicationFiled: June 12, 2009Publication date: October 15, 2009Applicant: ADVANCED CARDIOVASCULAR SYSTEMS, INC.Inventors: Bruce Wilson, Christopher C. Andrews, Kenneth l. Wantink, Daniel G. Brown, Darrin J. Kent, Jeremy L. Stigall, Plaridel Kimpo Villareal, Shahin Sarkissian
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Publication number: 20090223624Abstract: 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: ApplicationFiled: May 19, 2009Publication date: September 10, 2009Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Patent number: 7563400Abstract: A method of mounting a drug delivery stent on a balloon of a balloon catheter. The method securely mounts the drug delivery stent on the balloon without damaging the drug delivery layer of the stent. In one embodiment, the method generally comprises positioning a drug delivery stent on a balloon of a balloon catheter, and positioning the balloon with the drug delivery stent thereon within a polished bore of a mold formed at least in part of a metallic material. The balloon is pressurized and heated within the mold as the mold radially restrains the stent from expanding, to mount the stent on the balloon without damaging the drug delivery layer of the stent.Type: GrantFiled: April 12, 2005Date of Patent: July 21, 2009Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Bruce Wilson, Christopher C. Andrews, Kenneth L. Wantink, Daniel G. Brown, Darrin J. Kent, Jeremy L. Stigall, Plaridel Kimpo Villareal, Shahin Sarkissian
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Patent number: 7549975Abstract: 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: April 20, 2007Date of Patent: June 23, 2009Assignee: Abbott Cardiovascular Systems, Inc.Inventors: Jeong S. Lee, Kenneth L. Wantink
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Publication number: 20080262470Abstract: 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: ApplicationFiled: April 20, 2007Publication date: October 23, 2008Applicant: ABBOTT CARDIOVASCULAR SYSTEMSInventors: Jeong S. Lee, Kenneth L. Wantink
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Patent number: 7300415Abstract: A catheter having an elongated shaft with an inflation lumen and a guidewire lumen, a balloon on a distal shaft section, and a proximal intermediate port proximal to the balloon and a distal intermediate port distal to the balloon, the intermediate ports being in communication with the guidewire lumen and being configured to slidably receive a guidewire therethrough so that the guidewire extends into or out of a proximal section of the guidewire lumen through the proximal intermediate port, extends along an outer surface of the balloon, and extends into or out of a distal section of the guidewire lumen through the distal intermediate port. The balloon is inflated in a patient's blood vessel to perform a medical procedure, with the section of the guidewire extending along an outer surface of the balloon providing improved balloon retention at the desired location in the blood vessel during inflation of the balloon.Type: GrantFiled: December 20, 2002Date of Patent: November 27, 2007Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Christopher McMurtry, Jeong S. Lee, Kenneth L. Wantink
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Patent number: 7273470Abstract: A balloon catheter, and preferably to a rapid exchange type balloon catheter, having a proximal shaft section, and a distal shaft section with an inner tubular member and an outer tubular member, the outer tubular member having a section which is bonded as by fusing or otherwise bonding. The bonded section extends along a thickened wall portion of the outer tubular member at the rapid exchange junction. A reinforcing member or tube extends within at least a section of the bonded section of the outer tubular member. In one embodiment, the reinforcing tube extends within at least a section of the thickened wall portion of the outer tubular member. The configuration provides a rapid exchange junction with improved kink resistance and flexibility for excellent trackability, and with a minimal decrease in the size of the inflation lumen at the rapid exchange junction for an improved shortened balloon inflation/deflation time.Type: GrantFiled: August 14, 2003Date of Patent: September 25, 2007Assignee: Advanced Cardiovascular Systems, Inc.Inventor: Kenneth L. Wantink