Patents by Inventor Darrell L. Rankin

Darrell L. Rankin 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).

  • Patent number: 11369431
    Abstract: A catheter adapted to measure a contact force includes a proximal segment, a distal segment, a spring segment extending from the proximal segment to the distal segment, and at least one inductive sensor. The at least one inductive sensor includes a first plate of high magnetic permeability material disposed on the proximal segment, a second plate of high magnetic permeability material disposed on the distal segment opposite the first plate, at least one first coil disposed adjacent to the first plate between the first plate and the second plate, and at least one second coil disposed adjacent to the second plate opposite the first coil between the first plate and the second plate. The second coil is electrically connected in series with the first coil. The first coil and the second coil are configured to output a signal indicative of displacement between the first coil and the second coil.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: June 28, 2022
    Assignee: Boston Scientific Scimed Inc.
    Inventors: Darrell L. Rankin, John C. Potosky
  • Patent number: 11026745
    Abstract: An open-irrigated ablation catheter system includes a catheter body, and an electrode tip body mounted on a distal portion of the catheter body. The electrode tip body includes a proximal end configured for connection to the catheter body and a wall defining an open interior region and including one or more irrigation ports. The wall is conductive for delivering radio frequency (RF) energy. The catheter system further includes a proximal insert positioned partially within the catheter body and at least partially within the proximal end of the electrode tip body. The proximal insert includes a fluid inlet for receiving a cooling fluid delivered via the catheter body. The proximal insert forms a flow path configured to direct the cooling fluid from the fluid inlet to cool the distal portion of the catheter body and to cool a junction of the catheter body and the electrode tip body.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: June 8, 2021
    Assignee: Boston Scientific Scimed Inc
    Inventors: Ismail Guler, Darrell L. Rankin, David M. Flynn, Robbie Halvorson, Mark D. Mirigian
  • Patent number: 10420605
    Abstract: Devices and systems for ultrasonically imaging tissue and performing ablation therapy are disclosed. An ablation probe for treating and imaging body tissue includes an ablation electrode tip with a number of acoustic openings and a plurality of ultrasonic imaging sensors disposed within an interior lumen of the tip. The ultrasonic imaging sensors are supported within the interior lumen via an insert equipped with a number of recesses that receive the ultrasonic imaging sensors. An acoustically transparent shell disposed between the ultrasonic imaging sensors and the acoustic openings forms a fluid channel in the acoustic pathway of the sensors. During an ablation procedure, cooling fluid from an external fluid source is delivered through the fluid channel, providing an acoustic coupling effect between the ultrasonic imaging sensors and the surrounding body tissue.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: September 24, 2019
    Assignees: Koninklijke Philips N.V., Boston Scientific Scimed Inc.
    Inventors: Darrell L. Rankin, Josef V. Koblish, Szabolcs Deladi
  • Patent number: 10251625
    Abstract: To sum up, the present invention relates to an examination system 1301 for examining an associated tissue sample 1302, where the examination system comprises an interventional device 1320 which comprises a plurality of ultrasound transducers 306a-c and wherein the different ultrasound transducers are arranged to obtain images of different regions of an associated tissue sample, and wherein the examination system furthermore comprises a display device 1351 arranged for showing the images so that each of their positions corresponds to the corresponding positions of the different adjacent tissue sample regions in the adjacent associated tissue sample. A possible advantage of the system may be that relevant information regarding the associated tissue sample is conveyed to an observer in a fast an intuitive manner.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: April 9, 2019
    Assignees: Koninklijke Philips N.V., Boston Scientific Scimed, Inc.
    Inventors: Alexander Franciscus Kolen, Godefridus Antonius Harks, Steven Antonie Willem Fokkenrood, Szabolcs Deladi, Darrell L. Rankin, David L. McGee
  • Publication number: 20180168724
    Abstract: An open-irrigated ablation catheter system includes a catheter body, and an electrode tip body mounted on a distal portion of the catheter body. The electrode tip body includes a proximal end configured for connection to the catheter body and a wall defining an open interior region and including one or more irrigation ports. The wall is conductive for delivering radio frequency (RF) energy. The catheter system further includes a proximal insert positioned partially within the catheter body and at least partially within the proximal end of the electrode tip body. The proximal insert includes a fluid inlet for receiving a cooling fluid delivered via the catheter body. The proximal insert forms a flow path configured to direct the cooling fluid from the fluid inlet to cool the distal portion of the catheter body and to cool a junction of the catheter body and the electrode tip body.
    Type: Application
    Filed: December 18, 2017
    Publication date: June 21, 2018
    Inventors: Ismail Guler, Darrell L. Rankin, David M. Flynn, Robbie Halvorson, Mark D. Mirigian
  • Publication number: 20170354467
    Abstract: A catheter adapted to measure a contact force includes a proximal segment, a distal segment, a spring segment extending from the proximal segment to the distal segment, and at least one inductive sensor. The at least one inductive sensor includes a first plate of high magnetic permeability material disposed on the proximal segment, a second plate of high magnetic permeability material disposed on the distal segment opposite the first plate, at least one first coil disposed adjacent to the first plate between the first plate and the second plate, and at least one second coil disposed adjacent to the second plate opposite the first coil between the first plate and the second plate. The second coil is electrically connected in series with the first coil. The first coil and the second coil are configured to output a signal indicative of displacement between the first coil and the second coil.
    Type: Application
    Filed: June 9, 2017
    Publication date: December 14, 2017
    Inventors: Darrell L. Rankin, John C. Potosky
  • Publication number: 20170311922
    Abstract: The present invention relates to a visualization apparatus (1) comprising a signal processor (2) for processing measurement signals from an ultrasound measurement (3) and a rendering device (4) coupled to a processor for rendering a representation for discerning a region of tissue with changed property (42) upon energy application to the tissue from a region with unchanged property (41) within two extremities (44,47) of the representation indicative of two boundaries defining the tissue thickness. The rendering of the tissue with changed property (42) and the tissue with unchanged property (41) with different visual aspects is readily absorbable by a person who applies energy to the tissue.
    Type: Application
    Filed: November 17, 2015
    Publication date: November 2, 2017
    Inventors: CAIFENG SHAN, GODEFRIDUS ANTONIUS HARKS, HARM JAN WILLEM BELT, SZABOLCS DELADI, DAVID L. MCGEE, DARRELL L. RANKIN
  • Publication number: 20170290617
    Abstract: A catheter adapted to measure a contact force includes a proximal segment, a distal segment, a spring segment extending from the proximal segment to the distal segment, at least one magnet disposed on one of the proximal segment and the distal segment, and at least one inductive sensor disposed on the other one of the proximal segment and the distal segment opposite the at least one magnet. The spring segment is configured to permit displacement between the distal segment and the proximal segment in response to an application of the force on the distal segment. The at least one inductive sensor includes a first plate of high magnetic permeability material, and at least one coil disposed adjacent to the first plate of high magnetic permeability material. The coil is configured to output a signal indicative of the displacement between the inductive sensor and the opposite magnet.
    Type: Application
    Filed: March 28, 2017
    Publication date: October 12, 2017
    Inventors: Darrell L. Rankin, John C. Potosky
  • Publication number: 20170143416
    Abstract: A catheter adapted to measure a contact force. The catheter includes a proximal segment, a distal segment, and a spring segment. The spring segment extends from the proximal segment to the distal segment. The spring segment is configured to permit relative movement between the distal segment and the proximal segment in response to an application of the force on the distal segment. The spring segment includes a slotted tube having a longitudinal axis and a plurality of sensing elements. The sensing elements are disposed on surfaces of the slotted tube. The sensing elements are configured to output a plurality of signals indicative of the relative movement between the proximal segment and the distal segment.
    Type: Application
    Filed: November 20, 2016
    Publication date: May 25, 2017
    Inventors: Ismail Guler, Darrell L. Rankin, John C. Potosky
  • Publication number: 20170035357
    Abstract: Various embodiments concerns a system for measuring a force within a body comprising a catheter, the catheter comprising at least one sensor and an element located within the catheter, the element displaceable within the catheter relative to the at least one sensor. The system further comprises control circuitry configured to measure, for each of the at least one sensor, a change in a resonance frequency of the sensor based on a change in distance between the sensor and the element, the change in distance responsive to the force. The control circuitry is further configured to calculate at least one parameter of the force based on the change in the resonance frequency, and output an indication of the at least one parameter of the force.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 9, 2017
    Inventors: Darrell L. Rankin, John C. Potosky
  • Publication number: 20170035358
    Abstract: Various embodiments concern a system for measuring a force on a catheter. The catheter can comprise a proximal segment, a distal segment, and an intermediary segment comprising at least one strut. Each strut can extend from the proximal segment to the distal segment. Each strut can be formed from a super-elastic metal alloy material, such as nitinol. The plurality of struts can be configured to resiliently support the distal segment with respect to the proximal segment while permitting relative movement between the distal segment and the proximal segment. The system can comprise control circuitry configured to measure, for each of the plurality of struts, a change in an electrical property of the super-elastic metal alloy material of the strut when the distal segment moves relative to the proximal segment to determine a magnitude and direction of the force.
    Type: Application
    Filed: August 3, 2016
    Publication date: February 9, 2017
    Inventor: Darrell L. Rankin
  • Publication number: 20170035991
    Abstract: Various embodiments concern a force sensing catheter having a proximal segment containing a proximal hub, a distal segment containing a distal hub, and a spring segment that extends from the proximal segment to the distal segment. The spring segment comprises a plurality of struts connected to both of the proximal and distal hubs. Each strut includes a preformed bend. The struts mechanically support the distal segment in a base orientation with respect to the proximal segment, flex at the preformed bends when the distal segment moves relative to the proximal segment in response to a force, and resiliently return the distal segment to the base orientation once the force has been removed. The catheter further comprises a plurality of sensors configured to output signals indicative of relative movement between the proximal and distal segments for determining a magnitude and direction of the force.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 9, 2017
    Inventors: Darrell L. Rankin, John C. Potosky
  • Publication number: 20160213280
    Abstract: An example system for sensing catheter contact is disclosed. The system includes an elongate tubular member, a tip member and a flexible support structure including a support member. A proximal portion of the support structure may be coupled to the distal end of the tubular member while a distal portion may be coupled to the proximal end of the tip member. The system may also include an electroactive polymer member disposed along the support member, wherein displacement of the support member activates the electroactive polymer member such that an electrical response is output from the electroactive polymer member. A processor, electrically coupled to the electroactive polymer member, may be configured to evaluate the electrical response from the electroactive polymer member to determine a contact force of the tip member with tissue.
    Type: Application
    Filed: January 22, 2016
    Publication date: July 28, 2016
    Inventors: Jeffrey A. Sarge, Darrell L. Rankin, John C. Potosky
  • Patent number: 9241761
    Abstract: Devices and systems for ultrasonically imaging anatomical structures and performing ablation therapy within the body are disclosed. A combined ablation and ultrasound imaging probe includes an ablation electrode tip including an ablation electrode configured for delivering ablation energy, and a number of ultrasonic imaging sensors configured for imaging the tissue surrounding the probe. The ultrasonic imaging sensors are supported within the interior of the tip via a tip insert, and deliver ultrasonic waves through acoustic openings formed through the tip. The tip insert separates an interior lumen within the tip into a proximal fluid chamber and a distal fluid chamber. During an ablation procedure, the ultrasonic imaging sensors can be tasked to generate a number of ultrasonic images that can be displayed on a user interface.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: January 26, 2016
    Assignees: Koninklijke Philips N.V., Boston Scientific Scimed Inc.
    Inventors: Darrell L. Rankin, Josef V. Koblish, Szabolcs Deladi
  • Publication number: 20150133920
    Abstract: Devices and systems for ultrasonically imaging tissue and performing ablation therapy are disclosed. An ablation probe for treating and imaging body tissue includes an ablation electrode tip with a number of acoustic openings and a plurality of ultrasonic imaging sensors disposed within an interior lumen of the tip. The ultrasonic imaging sensors are supported within the interior lumen via an insert equipped with a number of recesses that receive the ultrasonic imaging sensors. An acoustically transparent shell disposed between the ultrasonic imaging sensors and the acoustic openings forms a fluid channel in the acoustic pathway of the sensors. During an ablation procedure, cooling fluid from an external fluid source is delivered through the fluid channel, providing an acoustic coupling effect between the ultrasonic imaging sensors and the surrounding body tissue.
    Type: Application
    Filed: January 22, 2015
    Publication date: May 14, 2015
    Inventors: Darrell L. Rankin, Josef V. Koblish, Szabolcs Deladi
  • Patent number: 8945015
    Abstract: Devices and systems for ultrasonically imaging tissue and performing ablation therapy are disclosed. An ablation probe for treating and imaging body tissue includes an ablation electrode tip with a number of acoustic openings and a plurality of ultrasonic imaging sensors disposed within an interior lumen of the tip. The ultrasonic imaging sensors are supported within the interior lumen via an insert equipped with a number of recesses that receive the ultrasonic imaging sensors. An acoustically transparent shell disposed between the ultrasonic imaging sensors and the acoustic openings forms a fluid channel in the acoustic pathway of the sensors. During an ablation procedure, cooling fluid from an external fluid source is delivered through the fluid channel, providing an acoustic coupling effect between the ultrasonic imaging sensors and the surrounding body tissue.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: February 3, 2015
    Assignees: Koninklijke Philips N.V., Boston Scientific Scimed Inc.
    Inventors: Darrell L. Rankin, Josef V. Koblish, Szabolcs Deladi
  • Publication number: 20140276052
    Abstract: An ablation probe for treating and imaging body tissue includes an ablation electrode tip including an ablation electrode configured for delivering ablation energy to body tissue. A plurality of acoustic openings are disposed through the ablation electrode tip. A plurality of ultrasonic imaging sensors are positioned inside the ablation electrode tip. The ultrasonic imaging sensors are configured to transmit ultrasonic waves through the acoustic openings. A plurality of flex circuits are each electrically connected to one of the plurality of ultrasonic imaging sensors.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicants: Boston Scientific Scimed, Inc.
    Inventors: Darrell L. Rankin, Reena Pathania, Szabolcs Deladi, Dennis D. Clark
  • Publication number: 20140039312
    Abstract: Techniques are disclosed for pacing site selection. In one example, a method includes using a sensing element such as an ultrasonic transducer, an optical pressure sensor, a MEMS pressure sensor, a SAW pressure sensor, an accelerometer, a gyroscope, or any other suitable sensing element to sense a measure related to a cardiac strain in a heart resulting from contraction and relaxation of myocardium during a cardiac cycle. Based on the sensed strain, an output may be provided for use by a user of the system to select a segment of the heart for lead placement.
    Type: Application
    Filed: July 30, 2013
    Publication date: February 6, 2014
    Applicant: Cardiac Pacemakers, Inc.
    Inventors: Holly E. Rockweiller, Rodney W. Salo, Bruce A. Tockman, Lewis J. Thomas, III, Aaron R. McCabe, Brian D. Soltis, Darrell L. Rankin, Michael S. Arney, Alex J. Sepulveda
  • Publication number: 20140031818
    Abstract: Methods and devices for filtering a fluid flowing through a medical device are disclosed. In one example, a medical device may include a catheter shaft including a proximal region having a coupling for coupling to a fluid source and a distal region including one or more irrigation apertures for expelling a fluid from the catheter. A fluid path can be defined by the catheter shaft between the coupling and the one or more irrigation apertures. A porous member can be positioned at a location in the fluid path such that the fluid being expelled from the catheter via the one or more irrigation apertures may flow through the porous member to filter, reduce, and/or break-up bubble formations in the fluid.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 30, 2014
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventor: DARRELL L. RANKIN
  • Publication number: 20130197363
    Abstract: Devices and systems for ultrasonically imaging tissue and performing ablation therapy are disclosed. An ablation probe for treating and imaging body tissue includes an ablation electrode tip with a number of acoustic openings and a plurality of ultrasonic imaging sensors disposed within an interior lumen of the tip. The ultrasonic imaging sensors are supported within the interior lumen via an insert equipped with a number of recesses that receive the ultrasonic imaging sensors. An acoustically transparent shell disposed between the ultrasonic imaging sensors and the acoustic openings forms a fluid channel in the acoustic pathway of the sensors. During an ablation procedure, cooling fluid from an external fluid source is delivered through the fluid channel, providing an acoustic coupling effect between the ultrasonic imaging sensors and the surrounding body tissue.
    Type: Application
    Filed: January 7, 2013
    Publication date: August 1, 2013
    Inventors: Darrell L. Rankin, Josef V. Koblish, Szabolcs Deladi