Patents by Inventor Douglas L. Evans

Douglas L. Evans 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: 10952855
    Abstract: According to an aspect, an inflatable penile prosthesis includes an inflatable member, a reservoir configured to hold fluid, and a reversible flow pump assembly configured to facilitate a transfer of the fluid from the reservoir to the inflatable member when in an inflation mode, and facilitate the transfer of the fluid from the inflatable member to the reservoir when in a deflation mode. The reversible flow pump assembly includes a pump, an input check valve coupled to the pump, an output check valve coupled to the pump, and a reversing valve. The input check valve is configured to permit transfer of fluid into the pump. The output check valve is configured to permit transfer of fluid out of the pump. The reversing valve is configured to switch between the inflation mode and the deflation mode.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: March 23, 2021
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Douglas L. Evans, Karl A. Jagger, Mark E. DiLoreto
  • Publication number: 20200197092
    Abstract: Embodiments of a surgical laser system comprise a laser source (102), a laser fiber (104), a photodetector (106) and a controller (108). The laser source is configured to generate laser energy (1 10). The laser fiber is optically coupled to the laser source and is configured to discharge the laser energy generated by the laser source. The photodetector is configured to generate an output signal (1 12) that is indicative of an intensity level of electromagnetic energy feedback (114) that is produced in response to the discharge of the laser energy. The controller is configured to control the laser source based on the output signal.
    Type: Application
    Filed: March 4, 2020
    Publication date: June 25, 2020
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: Rongwei Jason XUAN, Brian P. Watschke, Douglas L. Evans, Guangjian Wang, Wen-Jui Ray Chia, Nathan Brown, Thomas C. Hasenberg, Jian James Zhang, Hyun Wook Kang
  • Patent number: 10617470
    Abstract: Embodiments of a surgical laser systems may include a laser source configured to generate a laser energy; a laser fiber optically coupled to the laser source to discharge laser energy; a photodetector configured to generate an output signal indicative of an intensity level of electromagnetic energy feedback produced in response to the discharge of the laser energy; and a controller configured to control the laser source based on the output signal. Embodiments of a method of controlling a surgical laser system also are disclosed, wherein laser energy is generated using a laser source and discharged through a laser fiber. Electromagnetic energy feedback produced in response to discharging the laser energy is delivered to a photodetector. An output signal from the photodetector is analyzed using a controller. The laser source is controlled in response to analyzing an output signal using the controller.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: April 14, 2020
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Rongwei Jason Xuan, Brian P. Watschke, Douglas L. Evans, Guangjian Wang, Wen-Jui Ray Chia, Nathan Brown, Thomas C. Hasenberg, Jian James Zhang, Hyun Wook Kang
  • Publication number: 20190365468
    Abstract: An optical device including an optical fiber having a longitudinal axis and an optical fiber core with a distal end having a distal terminating end configured to discharge a first laser energy in a first direction and a second laser energy in a second direction. The optical device also includes a fiber cap having an interior cavity and an opening to the interior cavity, where the distal end of the optical fiber core is received within the interior cavity through the opening. A cladding is included on the distal end of the optical fiber core between the optical fiber core and the fiber cap.
    Type: Application
    Filed: August 15, 2019
    Publication date: December 5, 2019
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: Thomas Charles Hasenberg, Rongwei Jason Xuan, Brian P. Watschke, Douglas L. Evans, Guangjian Wang, Steven Yihlih Peng, Wen-Jui Ray Chia
  • Patent number: 10105184
    Abstract: Embodiments of the invention are directed to a laser ablation system. In one embodiment, the laser ablation system comprises a shaft, a balloon, a laser fiber and a viewing fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, a portion of which is within the balloon. The laser fiber has a distal end comprising a light dispenser that is configured to deliver laser light through the balloon. The viewing fiber is configured to image an interior balloon. In accordance with another embodiment, the laser ablation system comprises a shaft, a balloon and a laser fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, which is within the balloon. The balloon includes an inflated state, in which the balloon is shaped to conform to a cavity of a patient. The laser fiber has a distal end comprising light dispenser that is configured to deliver laser light through the balloon.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: October 23, 2018
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Michael T. Beck, Edouard A. Koullick, Robert E. Lund, Douglas L. Evans, Samuel L. Will, Stuart F. Watson, Hyun Wook Kang, Justin M. Crank, Somany Dy, Micah D. Thorson
  • Patent number: 9968403
    Abstract: An optical device including an optical fiber having a longitudinal axis and an optical fiber core with a distal end having a distal terminating end configured to discharge a first laser energy in a first direction and a second laser energy in a second direction. The optical device also includes a fiber cap having an interior cavity and an opening to the interior cavity, where the distal end of the optical fiber core is received within the interior cavity through the opening. A cladding is included on the distal end of the optical fiber core between the optical fiber core and the fiber cap.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: May 15, 2018
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Thomas Charles Hasenberg, Steven Yihlih Peng, Brian P. Watschke, Douglas L. Evans, Guangjian Wang, Rongwei Jason Xuan, Wen-Jui Ray Chia
  • Patent number: 9882338
    Abstract: A laser system includes a laser element, a pump source configured to input light to the laser element, a first cooling circuit and a second cooling circuit. The first cooling circuit includes a first pump configured to drive a first flow of cooling liquid through a first fluid pathway, a first primary heat exchanger configured to cool the first flow of cooling liquid, and a laser element heat exchanger configured to remove heat from the laser element using the first flow of cooling liquid. The second cooling circuit includes a second pump configured to drive a flow of cooling liquid through a second fluid pathway, a second primary heat exchanger configured to cool the second flow of cooling liquid, and a pump source heat exchanger configured to remove heat from the pump source using the first and second flows of cooling liquid.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: January 30, 2018
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Rongwei Jason Xuan, Douglas L. Evans
  • Publication number: 20170273792
    Abstract: According to an aspect, an inflatable penile prosthesis includes an inflatable member, a reservoir configured to hold fluid, and a reversible flow pump assembly configured to facilitate a transfer of the fluid from the reservoir to the inflatable member when in an inflation mode, and facilitate the transfer of the fluid from the inflatable member to the reservoir when in a deflation mode. The reversible flow pump assembly includes a pump, an input check valve coupled to the pump, an output check valve coupled to the pump, and a reversing valve. The input check valve is configured to permit transfer of fluid into the pump. The output check valve is configured to permit transfer of fluid out of the pump. The reversing valve is configured to switch between the inflation mode and the deflation mode.
    Type: Application
    Filed: March 17, 2017
    Publication date: September 28, 2017
    Inventors: Douglas L. Evans, Karl A. Jagger, Mark E. DiLoreto
  • Publication number: 20170007326
    Abstract: Embodiments of the invention are directed to a laser ablation system. In one embodiment, the laser ablation system comprises a shaft, a balloon, a laser fiber and a viewing fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, a portion of which is within the balloon. The laser fiber has a distal end comprising a light dispenser that is configured to deliver laser light through the balloon. The viewing fiber is configured to image an interior balloon. In accordance with another embodiment, the laser ablation system comprises a shaft, a balloon and a laser fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, which is within the balloon. The balloon includes an inflated state, in which the balloon is shaped to conform to a cavity of a patient. The laser fiber has a distal end comprising light dispenser that is configured to deliver laser light through the balloon.
    Type: Application
    Filed: July 13, 2016
    Publication date: January 12, 2017
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: Michael T. BECK, Edouard A. KOULLICK, Robert E. LUND, Douglas L. EVANS, Samuel L. WILL, Stuart F. WATSON, Hyun Wook KANG, Justin M. CRANK, Somany DY, Micah D. THORSON
  • Patent number: 9433467
    Abstract: Embodiments of a laser ablation system include a shaft, a balloon and a laser fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, a portion of which is disposed within the balloon. A light dispenser at a distal end of the laser fiber is configured to deliver laser light through the balloon. A central axis of the balloon is aligned with a longitudinal axis of the shaft. The balloon has a variable transparency such that the transmission of laser light through the balloon is non-uniform along the central axis. Accordingly, an energy of laser light transmitted from the light dispenser through the balloon to the targeted tissue varies due to the variable transparency of the balloon.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: September 6, 2016
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Michael T Beck, Edouard A. Koulick, Robert E. Lund, Douglas L. Evans, Samuel L. Will, Stuart F. Watson, Hyun Wook Kang, Justin M. Crank, Somany Dy, Micah D. Thorson
  • Publication number: 20160254636
    Abstract: A laser system includes a laser element, a pump source configured to input light to the laser element, a first cooling circuit and a second cooling circuit. The first cooling circuit includes a first pump configured to drive a first flow of cooling liquid through a first fluid pathway, a first primary heat exchanger configured to cool the first flow of cooling liquid, and a laser element heat exchanger configured to remove heat from the laser element using the first flow of cooling liquid. The second cooling circuit includes a second pump configured to drive a flow of cooling liquid through a second fluid pathway, a second primary heat exchanger configured to cool the second flow of cooling liquid, and a pump source heat exchanger configured to remove heat from the pump source using the first and second flows of cooling liquid.
    Type: Application
    Filed: May 13, 2016
    Publication date: September 1, 2016
    Applicant: Boston Scientific Scimed, Inc.
    Inventors: Rongwei Jason Xuan, Douglas L. Evans
  • Patent number: 9362705
    Abstract: A laser system includes a laser element, a pump source configured to input light to the laser element, a first heat exchanger, a pump source heat exchanger, a laser element heat exchanger, and a pump. The first heat exchanger is configured to cool a first flow of cooling liquid. The pump source heat exchanger is configured to remove heat from the pump source using the first flow of cooling liquid. The laser element heat exchanger is configured to remove heat from the laser element using a second flow of cooling liquid. The pump is configured to drive the first and second flows of cooling liquid.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: June 7, 2016
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Rongwei Jason Xuan, Douglas L. Evans
  • Publication number: 20150272676
    Abstract: An optical device including an optical fiber having a longitudinal axis and an optical fiber core with a distal end having a distal terminating end configured to discharge a first laser energy in a first direction and a second laser energy in a second direction. The optical device also includes a fiber cap having an interior cavity and an opening to the interior cavity, where the distal end of the optical fiber core is received within the interior cavity through the opening. A cladding is included on the distal end of the optical fiber core between the optical fiber core and the fiber cap.
    Type: Application
    Filed: October 16, 2013
    Publication date: October 1, 2015
    Inventors: Thomas Charles Hasenberg, Steven Yihlih Peng, Brian P. Watschke, Douglas L. Evans, Guangjian Wang, Rongwei Jason Xuan, Wen-Jui Ray Chia
  • Publication number: 20150230864
    Abstract: Embodiments of a surgical laser system comprise a laser source, a laser fiber, a photodetector and a controller. The laser source is configured to generate laser energy. The laser fiber is optically coupled to the laser source and is configured to discharge the laser energy generated by the laser source. The photodetector is configured to generate an output signal that is indicative of an intensity level of electromagnetic energy feedback that is produced in response to the discharge of the laser energy. The controller is configured to control the laser source based on the output signal. In embodiments of a method of controlling a surgical laser system, laser energy is generated using a laser source. The laser energy is discharged through a laser fiber. Electromagnetic energy feedback is produced in response to discharging the laser energy is delivered to a photodetector. An output signal from the photodetector is analyzed using a controller.
    Type: Application
    Filed: March 11, 2013
    Publication date: August 20, 2015
    Inventors: Rongwei Jason Xuan, Brian P. Watschke, Douglas L. Evans, Guangjian Wang, Wen-Jui Ray Chia, Nathan Brown, Thomas C. Hasenberg, Jian James Zhang, Hyun Wook Kang
  • Publication number: 20150188279
    Abstract: A laser system includes a laser element, a pump source configured to input light to the laser element, a first heat exchanger, a pump source heat exchanger, a laser element heat exchanger, and a pump. The first heat exchanger is configured to cool a first flow of cooling liquid. The pump source heat exchanger is configured to remove heat from the pump source using the first flow of cooling liquid. The laser element heat exchanger is configured to remove heat from the laser element using a second flow of cooling liquid. The pump is configured to drive the first and second flows of cooling liquid.
    Type: Application
    Filed: March 13, 2015
    Publication date: July 2, 2015
    Inventors: Rongwei Jason Xuan, Douglas L. Evans
  • Patent number: 9008136
    Abstract: A laser system includes a laser element, a pump source configured to input light to the laser element, a first cooling circuit and a second cooling circuit. The first cooling circuit includes a first pump configured to drive a first flow of cooling liquid through a first fluid pathway, a first primary heat exchanger configured to cool the first flow of cooling liquid, and a laser element heat exchanger configured to remove heat from the laser element using the first flow of cooling liquid. The second cooling circuit includes a second pump configured to drive a flow of cooling liquid through a second fluid pathway, a second primary heat exchanger configured to cool the second flow of cooling liquid, and a pump source heat exchanger configured to remove heat from the pump source using the first and second flows of cooling liquid.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: April 14, 2015
    Assignee: AMS Research Corporation
    Inventors: Rongwei Jason Xuan, Douglas L. Evans
  • Publication number: 20150045779
    Abstract: Embodiments of a laser ablation system include a shaft, a balloon and a laser fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, a portion of which is disposed within the balloon. A light dispenser at a distal end of the laser fiber deliver laser light through the balloon. A central axis of the balloon is aligned with a longitudinal axis of the shaft. The balloon has a variable transparency such that the transmission of laser light through the balloon is non-uniform along the central axis. Accordingly, an energy of laser light transmitted from the light dispenser through the balloon to the targeted tissue varies due to the variable transparency of the balloon.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Inventors: Michael T. Beck, Edouard A. Koulick, Robert E. Lund, Douglas L. Evans, Samuel L. Will, Stuart F. Watson, Hyun Wook Kang, Justin M. Crank, Somany Dy, Micah D. Thorson
  • Patent number: 8936592
    Abstract: Embodiments of the invention are directed to a laser ablation system. In one embodiment, the laser ablation system comprises a shaft, a balloon, a laser fiber and a viewing fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, a portion of which is within the balloon. The laser fiber has a distal end comprising a light dispenser that is configured to deliver laser light through the balloon. The viewing fiber is configured to image an interior balloon. In accordance with another embodiment, the laser ablation system comprises a shaft, a balloon and a laser fiber. The shaft has a proximal end and a distal end. The balloon is attached to the distal end of the shaft, which is within the balloon. The balloon includes an inflated state, in which the balloon is shaped to conform to a cavity of a patient. The laser fiber has a distal end comprising light dispenser that is configured to deliver laser light through the balloon.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: January 20, 2015
    Assignee: AMS Research Corporation
    Inventors: Michael T. Beck, Edouard A. Koullick, Robert E. Lund, Douglas L. Evans, Samuel L. Will, Stuart F. Watson, Hyun Wook Kang, Justin M. Crank, Somany Dy, Micah D. Thorson
  • Patent number: 8876804
    Abstract: An ablation device comprises a balloon having an open proximal end and a closed distal end. A cylindrical tube extends into the balloon through the proximal end. An end support member is positioned at the distal end of the balloon. The end support member comprises a cylindrical portion facing the proximal end of the balloon. The cylindrical portion is received within a bore at the distal end of the tube. A seal is formed between the proximal end of the balloon and the cylindrical tube.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: November 4, 2014
    Assignee: AMS Research Corporation
    Inventors: Douglas L. Evans, Samuel L. Will, Michael T. Beck, Robert E. Lund, James B. Guest
  • Publication number: 20130250985
    Abstract: A laser system includes a laser element, a pump source configured to input light to the laser element, a first cooling circuit and a second cooling circuit. The first cooling circuit includes a first pump configured to drive a first flow of cooling liquid through a first fluid pathway, a first primary heat exchanger configured to cool the first flow of cooling liquid, and a laser element heat exchanger configured to remove heat from the laser element using the first flow of cooling liquid. The second cooling circuit includes a second pump configured to drive a flow of cooling liquid through a second fluid pathway, a second primary heat exchanger configured to cool the second flow of cooling liquid, and a pump source heat exchanger configured to remove heat from the pump source using the first and second flows of cooling liquid.
    Type: Application
    Filed: January 25, 2013
    Publication date: September 26, 2013
    Inventors: Rongwei Jason Xuan, Douglas L. Evans