Patents by Inventor Gwen Crevensten
Gwen Crevensten 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: 7657324Abstract: A seal adapted for use with medical devices is provided. The medical device may be a lead having a distal tip adapted for implantation on or about the heart and for connection to a system for monitoring or stimulating cardiac activity. The lead assembly in one embodiment includes an atraumatic tip. A seal is provided within the lead tip assembly, which prevents or limits further entry of fluids through the lead tip. The lead may be a left ventricular lead with a hemostasis mechanism provided therewithin.Type: GrantFiled: July 14, 2003Date of Patent: February 2, 2010Assignee: Cardiac Pacemakers, Inc.Inventors: Randy Westlund, Bruce Tockman, Gwen Crevensten, Lili Liu, Christopher M. Zerby
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Publication number: 20070239249Abstract: An apparatus includes a lead body extending from a proximal end to a distal end and having an intermediate portion therebetween. The lead body includes two or more individually insulated conductors, where a first conductor traverses along less than an entire length of the lead body and a second conductor traverses from the proximal end to the distal end of the lead body. Optionally, the first conductor has a different material than the second conductor, for instance having differing electrical properties and/or differing stiffnesses. A method includes varying the stiffness of a coiled conductor assembly including winding a plurality of conductors to form the coiled conductor assembly, and pulling at least one loop of a first conductor away from the coiled conductor assembly.Type: ApplicationFiled: June 14, 2007Publication date: October 11, 2007Applicant: Cardiac Pacemakers, Inc.Inventors: Bruce Tockman, Randy Westlund, Gwen Crevensten, Lili Liu, Chris Zerby, Jay Warren
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Patent number: 7239923Abstract: An apparatus includes a lead body extending from a proximal end to a distal end and having an intermediate portion therebetween. The lead body includes two or more individually insulated conductors, where a first conductor traverses along less than an entire length of the lead body and a second conductor traverses from the proximal end to the distal end of the lead body. Optionally, the first conductor has a different material than the second conductor, for instance having differing electrical properties and/or differing stiffnesses. A method includes varying the stiffness of a coiled conductor assembly including winding a plurality of conductors to form the coiled conductor assembly, and pulling at least one loop of a first conductor away from the coiled conductor assembly.Type: GrantFiled: August 1, 2000Date of Patent: July 3, 2007Assignee: Cardiac Pacemakers, Inc.Inventors: Bruce Tockman, Randy Westlund, Gwen Crevensten, Lili Liu, Chris Zerby, Jay A. Warren
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Patent number: 7234977Abstract: A connector for connecting to an energy source such as a pulse generator for a cardiac stimulator system. The connector assembly includes a pin, at least one ring and a sleeve composed of an insulative hard polymer molded between the pin and ring such that the sleeve provides electrical insulation between the pin and ring and mechanically couples the pin and ring.Type: GrantFiled: May 10, 2005Date of Patent: June 26, 2007Assignee: Cardiac Pacemakers, Inc.Inventors: Randy Westlund, Gwen Crevensten, Christopher M. Zerby, Paul E. Zarembo, Brian D. Soltis, Gregory R. Ley
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Publication number: 20050202703Abstract: A connector for connecting to an energy source such as a pulse generator for a cardiac stimulator system. The connector assembly includes a pin, at least one ring and a sleeve composed of an insulative hard polymer molded between the pin and ring such that the sleeve provides electrical insulation between the pin and ring and mechanically couples the pin and ring.Type: ApplicationFiled: May 10, 2005Publication date: September 15, 2005Inventors: Randy Westlund, Gwen Crevensten, Christopher Zerby, Paul Zarembo, Brian Soltis, Gregory Ley
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Patent number: 6895277Abstract: A connector for connecting to an energy source such as a pulse generator for a cardiac stimulator system. The connector assembly includes a pin, at least one ring and a sleeve composed of an insulative hard polymer molded between the pin and ring such that the sleeve provides electrical insulation between the pin and ring and mechanically couples the pin and ring.Type: GrantFiled: November 4, 2003Date of Patent: May 17, 2005Assignee: Cardiac Pacemakers, Inc.Inventors: Randy Westlund, Gwen Crevensten, Christopher M. Zerby, Paul E. Zarembo, Brian D. Soltis, Gregory R. Ley
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Publication number: 20050090883Abstract: A seal adapted for use with medical devices is provided. The medical device may be a lead having a distal tip adapted for implantation on or about the heart and for connection to a system for monitoring or stimulating cardiac activity. The lead assembly in one embodiment includes an atraumatic tip. A seal is provided within the lead tip assembly, which prevents or limits further entry of fluids through the lead tip. The lead may be a left ventricular lead with a hemostasis mechanism provided therewithin.Type: ApplicationFiled: July 14, 2003Publication date: April 28, 2005Inventors: Randy Westlund, Bruce Tockman, Gwen Crevensten, Lili Liu, Christopher Zerby
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Publication number: 20040093052Abstract: A connector for connecting to an energy source such as a pulse generator for a cardiac stimulator system. The connector assembly includes a pin, at least one ring and a sleeve composed of an insulative hard polymer molded between the pin and ring such that the sleeve provides electrical insulation between the pin and ring and mechanically couples the pin and ring.Type: ApplicationFiled: November 4, 2003Publication date: May 13, 2004Applicant: Cardiac Pacemaker, Inc.Inventors: Randy Westlund, Gwen Crevensten, Christopher M. Zerby, Paul E. Zarembo, Brian D. Soltis, Gregory R. Ley
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Patent number: 6643550Abstract: A connector for connecting to an energy source such as a pulse generator for a cardiac stimulator system. The connector assembly includes a pin, at least one ring and a sleeve composed of an insulative hard polymer molded between the pin and ring such that the sleeve provides electrical insulation between the pin and ring and mechanically couples the pin and ring.Type: GrantFiled: December 15, 2000Date of Patent: November 4, 2003Assignee: Cardiac Pacemakers, Inc.Inventors: Randy Westlund, Gwen Crevensten, Christopher M. Zerby, Paul E. Zarembo, Brian D. Soltis, Gregory R. Ley
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Patent number: 6634364Abstract: A seal adapted for use with medical devices is provided. The medical device may be a lead having a distal tip adapted for implantation on or about the heart and for connection to a system for monitoring or stimulating cardiac activity. The lead assembly in one embodiment includes an atraumatic tip. A seal is provided within the lead tip assembly, which prevents or limits further entry of fluids through the lead tip. The lead may be a left ventricular lead with a hemostasis mechanism provided therewithin.Type: GrantFiled: December 15, 2000Date of Patent: October 21, 2003Assignee: Cardiac Pacemakers, Inc.Inventors: Randy Westlund, Bruce Tockman, Gwen Crevensten, Lili Liu, Christopher M. Zerby
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Publication number: 20030036779Abstract: A connector for connecting to an energy source such as a pulse generator for a cardiac stimulator system. The connector assembly includes a pin, at least one ring and a sleeve composed of an insulative hard polymer molded between the pin and ring such that the sleeve provides electrical insulation between the pin and ring and mechanically couples the pin and ring.Type: ApplicationFiled: December 15, 2000Publication date: February 20, 2003Inventors: Randy Westlund, Gwen Crevensten, Christopher M. Zerby, Paul E. Zarembo, Brian D. Soltis, Gregory R. Ley
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Publication number: 20020111664Abstract: A cardiac lead designed for implantation in the vasculature of the left side of the heart comprising a flexible lead body having a central lumen, a removable terminal pin, electrodes electrically coupled to the removable terminal pin, a mechanism for securing the electrodes in the proper position in the vasculature and a mechanism for sealing the central lumen after implantation to prevent body fluids from invading the lumen. The cardiac lead can be implanted or explanted using either a guidewire, a guide catheter or both.Type: ApplicationFiled: April 5, 2002Publication date: August 15, 2002Applicant: Cardiac Pacemakers, Inc.Inventors: Jeffrey T. Bartig, Stuart R. Chastain, Gwen Crevensten, John E. Heil, Curtis C. Lindstrom, Aaron W. Jahnke
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Publication number: 20020077683Abstract: A seal adapted for use with medical devices is provided. The medical device may be a lead having a distal tip adapted for implantation on or about the heart and for connection to a system for monitoring or stimulating cardiac activity. The lead assembly in one embodiment includes an atraumatic tip. A seal is provided within the lead tip assembly, which prevents or limits further entry of fluids through the lead tip. The lead may be a left ventricular lead with a hemostasis mechanism provided therewithin.Type: ApplicationFiled: December 15, 2000Publication date: June 20, 2002Inventors: Randy Westlund, Bruce Tockman, Gwen Crevensten, Lili Liu, Christopher M. Zerby
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Patent number: 6408213Abstract: A cardiac lead designed for implantation in the vasculature of the left side of the heart comprising a flexible lead body having a central lumen, a removable terminal pin, electrodes electrically coupled to the removable terminal pin, a mechanism for securing the electrodes in the proper position in the vasculature and a mechanism for sealing the central lumen after implantation to prevent body fluids from invading the lumen. The cardiac lead can be implanted or explanted using either a guidewire, a guide catheter or both.Type: GrantFiled: September 29, 1999Date of Patent: June 18, 2002Assignee: Cardiac Pacemakers, Inc.Inventors: Jeffrey T. Bartig, Stuart R. Chastain, Gwen Crevensten, John E. Heil, Curtis C. Lindstrom
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Patent number: 6018684Abstract: A lead for use in conjunction with a cardiac rhythm management device includes an electrode coupled to a conductor. The lead includes an insulative covering in the areas distal and proximal to the electrode. The electrode includes one or more slots bridged by the insulative material to form a more secure joint between the electrode and the insulative material.Type: GrantFiled: July 30, 1998Date of Patent: January 25, 2000Assignee: Cardiac Pacemakers, Inc.Inventors: Jeffrey T. Bartig, Gwen Crevensten