Patents by Inventor Robert G. Lerdahl
Robert G. Lerdahl 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: 10350393Abstract: A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filament, the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.Type: GrantFiled: April 24, 2017Date of Patent: July 16, 2019Assignee: C.R. BARD, INC.Inventors: David M. Graves, William E. Parmentier, Robert G. Lerdahl, Phillip E. Carr, Jo Ann Kelly
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Patent number: 10098772Abstract: A stent graft is disclosed and can include a stent and a graft engaged with the stent. The graft can include an inner surface and an outer surface. Further, at least one of the inner surface and the outer surface can include a plurality of protrusions as viewed in cross section extending through a longitudinal axis.Type: GrantFiled: October 10, 2007Date of Patent: October 16, 2018Assignee: C. R. Bard, Inc.Inventors: Robert G. Lerdahl, Chandrashekhar Prabhakar Pathak, R. Michael Casanova
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Publication number: 20170224966Abstract: A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filament, the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.Type: ApplicationFiled: April 24, 2017Publication date: August 10, 2017Inventors: David M. Graves, William E. Parmentier, Robert G. Lerdahl, Phillip E. Carr, Jo Ann Kelly
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Patent number: 9643235Abstract: A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filament, the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.Type: GrantFiled: February 24, 2014Date of Patent: May 9, 2017Assignee: C.R. BARD, INC.Inventors: David M. Graves, William E. Parmentier, Robert G. Lerdahl, Phillip E. Carr, Jo Ann Kelly
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Publication number: 20140166152Abstract: A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filament, the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.Type: ApplicationFiled: February 24, 2014Publication date: June 19, 2014Applicant: C.R. BARD, INC.Inventors: David M. Graves, William E. Parmentier, Robert G. Lerdahl, Phillip E. Carr, Jo Ann Kelly
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Patent number: 8673200Abstract: A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filament, the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.Type: GrantFiled: July 31, 2012Date of Patent: March 18, 2014Assignee: C.R. Bard, Inc.Inventors: David M. Graves, William E. Parmentier, Robert G. Lerdahl, Phillip E. Carr, Jo Ann Kelly
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Publication number: 20120291957Abstract: A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filament, the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.Type: ApplicationFiled: July 31, 2012Publication date: November 22, 2012Inventors: David M. Graves, William E. Parmentier, Robert G. Lerdahl, Phillip E. Carr, Jo Ann Kelly
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Patent number: 8236223Abstract: A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filaments the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.Type: GrantFiled: July 2, 2009Date of Patent: August 7, 2012Assignee: C.R. Bard, Inc.Inventors: David M. Graves, William E. Parmentier, Robert G. Lerdahl, Phillip E. Carr, Jo Ann Kelly
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Publication number: 20110000604Abstract: A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filaments the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.Type: ApplicationFiled: July 2, 2009Publication date: January 6, 2011Inventors: David M. Graves, William E. Parmentier, Robert G. Lerdahl, Phillip E. Carr, Jo Ann Kelly
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Publication number: 20100256669Abstract: A vena cava filter is described, having at least one member arranged helically along a longitudinal axis of the filter. The filter may include a plurality of legs around which is arranged one or more filaments traveling in a helical path, or an elongated wire member arranged to define a first and second helecal path. The filter may include hooks and/or a retreival member.Type: ApplicationFiled: November 28, 2006Publication date: October 7, 2010Applicant: C.R. Bard, Inc.Inventors: Keith S. Harris, Robert G. Lerdahl, Khoi Q. Ta
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Publication number: 20090099642Abstract: A stent graft is disclosed and can include a stent and a graft engaged with the stent. The graft can include an inner surface and an outer surface. Further, at least one of the inner surface and the outer surface can include a plurality of protrusions as viewed in cross section extending through a longitudinal axis.Type: ApplicationFiled: October 10, 2007Publication date: April 16, 2009Applicant: C.R. Bard, Inc.Inventors: Robert G. Lerdahl, Chandrashekhar P. Pathak, R. Michael Casanova