Patents by Inventor John L. Loewen
John L. Loewen 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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Publication number: 20200138409Abstract: A probe cap for use with an ultrasound probe including a head portion and an acoustic surface is disclosed. In one embodiment, the probe cap includes a body that defines a cavity sized for releasably receiving the head portion of the probe therein. The probe cap body further defines a hole that is proximate the acoustic surface of the head portion. A compliant spacer component is disposed in the hole. The spacer component can include a hydrogel and provides an acoustic path between the acoustic surface and a tissue surface of a patient. The spacer component includes a skin contact surface that defines a concavity and is deformable against the tissue surface. Additional embodiments disclose various probe cap and accompanying needle guide designs for use in assisting a clinician with ultrasound probe use and needle insertion into a patient.Type: ApplicationFiled: December 10, 2019Publication date: May 7, 2020Inventors: Eric W. Lindekugel, Charles L. Farnworth, John L. Loewen
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Patent number: 9408736Abstract: Device useful for implanting an implantable device within the vasculature of a patient. The device includes a deployment line, a control component for actuating the deployment line, and an actuation mechanism for translating constant-rate actuation of the control component into variable rate retraction of the deployment line from a remotely deployable implantable device. Suitable implantable devices include, for example, stents and stent grafts.Type: GrantFiled: March 5, 2014Date of Patent: August 9, 2016Assignee: W. L. GORE & ASSOCIATES, INC.Inventor: John L. Loewen
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Patent number: 8945059Abstract: A hemostatic valve apparatus used in medical procedures that provides rapid activation of a sealing mechanism resulting in lower blood loss during use of the sealing device. The valve apparatus incorporates an actuator and two mechanisms that counter-rotate opposite ends of a sealing tube.Type: GrantFiled: October 24, 2013Date of Patent: February 3, 2015Assignee: W. L. Gore & Associates, Inc.Inventor: John L. Loewen
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Patent number: 8864675Abstract: An improved catheter is provided. The catheter may include a deflectable member located at a distal end of a catheter body. The deflectable member may comprise an ultrasound transducer array. The deflectable member may be interconnected to the catheter body by a live hinge. The catheter may include a lumen extending from a proximal end of the catheter body to the distal end. The lumen may be used to deliver an interventional device to a point distal to the distal end of the catheter body. The deflectable member may be selectively deflectable in a pivot-like manner through an arc of at least 90 degrees. In embodiments where the deflectable member includes an ultrasound transducer array, the ultrasound transducer array may be operable to image both when aligned with the catheter body and when pivoted relative to the catheter body.Type: GrantFiled: January 7, 2010Date of Patent: October 21, 2014Assignee: W. L. Gore & Associates, Inc.Inventors: Dennis R. Dietz, Curtis J. Franklin, John L. Loewen, David J. Messick, Craig T. Nordhausen, Clyde G. Oakley, Ryan C. Patterson, Jim H. Polenske, Shawn D. Quick, Daniel H. Todd, Thomas L. Tolt, David W. Wilson
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Patent number: 8858610Abstract: A fixed sequence activation handle is described that forces a predetermined activation sequence. Such handles are suitable for use in the delivery of medical devices or for other application that require a fixed sequence of activations.Type: GrantFiled: January 18, 2010Date of Patent: October 14, 2014Assignee: W. L. Gore & Associates, Inc.Inventors: Harold A. Brown, Eric J. Davis, Michelle L. Gendron, John L. Loewen, Clare R. Long, Justin W. Sokel, Joseph P. Sullivan, Markus Wierzoch
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Publication number: 20140188209Abstract: Device useful for implanting an implantable device within the vasculature of a patient. The device includes a deployment line, a control component for actuating the deployment line, and an actuation mechanism for translating constant-rate actuation of the control component into variable rate retraction of the deployment line from a remotely deployable implantable device. Suitable implantable devices include, for example, stents and stent grafts.Type: ApplicationFiled: March 5, 2014Publication date: July 3, 2014Applicant: W. L. Gore & Associates, Inc.Inventor: John L. Loewen
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Publication number: 20140180116Abstract: A probe cap for use with an ultrasound probe including a head portion and an acoustic surface is disclosed. In one embodiment, the probe cap includes a body that defines a cavity sized for releasably receiving the head portion of the probe therein. The probe cap body further defines a hole that is proximate the acoustic surface of the head portion. A compliant spacer component is disposed in the hole. The spacer component can include a hydrogel and provides an acoustic path between the acoustic surface and a tissue surface of a patient. The spacer component includes a skin contact surface that defines a concavity and is deformable against the tissue surface. Additional embodiments disclose various probe cap and accompanying needle guide designs for use in assisting a clinician with ultrasound probe use and needle insertion into a patient.Type: ApplicationFiled: February 26, 2014Publication date: June 26, 2014Inventors: Eric W. Lindekugel, Charles L. Farnworth, John L. Loewen
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Patent number: 8702778Abstract: Device useful for implanting an implantable device within the vasculature of a patient. The device includes a deployment line, a control component for actuating the deployment line, and an actuation mechanism for translating constant-rate actuation of the control component into variable rate retraction of the deployment line from a remotely deployable implantable device. Suitable implantable devices include, for example, stents and stent grafts.Type: GrantFiled: October 12, 2006Date of Patent: April 22, 2014Assignee: W. L. Gore & Associates, Inc.Inventor: John L. Loewen
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Publication number: 20140052064Abstract: A hemostatic valve apparatus used in medical procedures that provides rapid activation of a sealing mechanism resulting in lower blood loss during use of the sealing device. The valve apparatus incorporates an actuator and two mechanisms that counter-rotate opposite ends of a sealing tube.Type: ApplicationFiled: October 24, 2013Publication date: February 20, 2014Applicant: W.L. GORE & ASSOCIATES, INC.Inventor: John L. Loewen
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Publication number: 20100280316Abstract: An improved catheter is provided. The catheter may include a deflectable member located at a distal end of a catheter body. The deflectable member may comprise an ultrasound transducer array. The deflectable member may be interconnected to the catheter body by a live hinge. The catheter may include a lumen extending from a proximal end of the catheter body to the distal end. The lumen may be used to deliver an interventional device to a point distal to the distal end of the catheter body. The deflectable member may be selectively deflectable in a pivot-like manner through an arc of at least 90 degrees. In embodiments where the deflectable member includes an ultrasound transducer array, the ultrasound transducer array may be operable to image both when aligned with the catheter body and when pivoted relative to the catheter body.Type: ApplicationFiled: January 7, 2010Publication date: November 4, 2010Inventors: Dennis R. Dietz, Curtis J. Franklin, John L. Loewen, David J. Messick, Craig T. Nordhausen, Clyde G. Oakley, Ryan C. Patterson, Jim H. Polenske, Shawn D. Quick, Daniel H. Todd, Thomas L. Tolt, David W. Wilson
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Publication number: 20100211052Abstract: A fixed sequence activation handle is described that forces a predetermined activation sequence. Such handles are suitable for use in the delivery of medical devices or for other application that require a fixed sequence of activations.Type: ApplicationFiled: January 18, 2010Publication date: August 19, 2010Inventors: Harold A. Brown, Eric J. Davis, Michelle L. Gendron, John L. Loewen, Clare R. Long, Justin W. Sokel, Joseph P. Sullivan, Markus Wierzoch
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Publication number: 20100198158Abstract: A hemostatic valve apparatus used in medical procedures that provides rapid activation of a sealing mechanism resulting in lower blood loss during use of the sealing device. The valve apparatus incorporates an actuator and two mechanisms that counter-rotate opposite ends of a sealing tube.Type: ApplicationFiled: January 30, 2009Publication date: August 5, 2010Inventor: John L. Loewen