Patents by Inventor Ruwan Sumanasinghe

Ruwan Sumanasinghe 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: 11980540
    Abstract: An endoluminal graft includes a tubular graft material having a closed sleeve integral with the tubular graft material. The closed sleeve extends a distance along the tubular graft material. A length of wire extends at least partially along the distance and is enclosed by the sleeve. The tubular graft material and the sleeve may comprise a single piece of graft material. The sleeve may be a closed circumferential sleeve and/or a closed longitudinal sleeve.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: May 14, 2024
    Assignee: COOK MEDICAL TECHNOLOGIES LLC
    Inventors: Jarin A. Kratzberg, Erik E. Rasmussen, Ruwan Sumanasinghe, Woong Kim
  • Patent number: 11969335
    Abstract: A tubular graft may include a first woven layer, where the first woven layer forms a first side of the tubular graft; a second woven layer, where the second woven layer forms a second side of the tubular graft; and a tapered portion having an edge, where the edge connects the first woven layer and the second woven layer, where the tapered portion includes a first weft thread, a second weft thread, and a third weft thread, and where a floating portion of a first warp end extends from the first weft thread to the third weft thread such that the floating portion bypasses the second weft thread.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: April 30, 2024
    Assignee: COOK MEDICAL TECHNOLOGIES LLC
    Inventor: Ruwan Sumanasinghe
  • Patent number: 11957564
    Abstract: An implantable graft may include a main section having walls formed with a woven fabric, the main section having a main lumen extending therethrough. The implantable graft may also include a bifurcated section having walls formed with the woven fabric, where the bifurcated section extends from main section, where the bifurcated section includes a first branch and a second branch, and where the first branch and the second branch each include a branch lumen in fluid communication with the main lumen. At least one branch of the bifurcated section may include a branch taper formed by a seam connecting a first woven layer and a second woven layer. A seam extension may extend outwardly along the seam of the branch taper, the seam extension being a single-layer woven structure.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: April 16, 2024
    Assignee: Cook Medical Technologies LLC
    Inventor: Ruwan Sumanasinghe
  • Patent number: 11786388
    Abstract: The present embodiments provide delivery systems for facilitating orientation of a prosthesis in a bodily passage. In one example, a system comprises an inner cannula having proximal and distal regions, and further comprises an atraumatic tip having a proximal end, a distal end, and a central region disposed therebetween. At least a portion of the atraumatic tip may be coupled to the proximal region of the inner cannula. A plurality of orientation struts are provided having a retracted delivery state, an expanded deployed state, and a retracted withdrawal state. The plurality of orientation struts each have apices that are oriented proximally relative to the atraumatic tip in the retracted delivery state, are oriented radially outward relative to the atraumatic tip in the expanded deployed state, and are oriented distally relative to the atraumatic tip in the retracted withdrawal state.
    Type: Grant
    Filed: March 12, 2021
    Date of Patent: October 17, 2023
    Assignee: COOK MEDICAL TECHNOLOGIES LLC
    Inventor: Ruwan Sumanasinghe
  • Patent number: 11690705
    Abstract: A tubular graft for use in a stent graft. The tubular graft may include a first woven layer that forms a first side of the tubular graft, where the first woven layer has a set of first warp ends. A second woven layer may forma a second side of the tubular graft, where the second woven layer has a set of second warp ends, and where the second warp ends are distinct from the first warp ends. A woven pocket flap may extend from the first woven layer, where a pocket opening is defined between the woven pocket flap and the first woven layer, and where the woven pocket flap includes at least one common weft yarn with the first woven layer.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 4, 2023
    Assignee: Cook Medical Technologies LLC
    Inventors: Ruwan Sumanasinghe, Woong Kim
  • Publication number: 20220287860
    Abstract: The present embodiments provide delivery systems for facilitating orientation of a prosthesis in a bodily passage. In one example, a system comprises an inner cannula having proximal and distal regions, and further comprises an atraumatic tip having a proximal end, a distal end, and a central region disposed therebetween. At least a portion of the atraumatic tip may be coupled to the proximal region of the inner cannula. A plurality of orientation struts are provided having a retracted delivery state, an expanded deployed state, and a retracted withdrawal state. The plurality of orientation struts each have apices that are oriented proximally relative to the atraumatic tip in the retracted delivery state, are oriented radially outward relative to the atraumatic tip in the expanded deployed state, and are oriented distally relative to the atraumatic tip in the retracted withdrawal state.
    Type: Application
    Filed: March 12, 2021
    Publication date: September 15, 2022
    Applicant: COOK MEDICAL TECHNOLOGIES LLC
    Inventor: Ruwan Sumanasinghe
  • Publication number: 20220202559
    Abstract: An implantable graft may include a main section having walls formed with a woven fabric, the main section having a main lumen extending therethrough. The implantable graft may also include a bifurcated section having walls formed with the woven fabric, where the bifurcated section extends from main section, where the bifurcated section includes a first branch and a second branch, and where the first branch and the second branch each include a branch lumen in fluid communication with the main lumen. At least one branch of the bifurcated section may include a branch taper formed by a seam connecting a first woven layer and a second woven layer. A seam extension may extend outwardly along the seam of the branch taper, the seam extension being a single-layer woven structure.
    Type: Application
    Filed: March 21, 2022
    Publication date: June 30, 2022
    Applicant: Cook Medical Technologies LLC
    Inventor: Ruwan Sumanasinghe
  • Patent number: 11278391
    Abstract: An implantable graft may include a main section having walls formed with a woven fabric, the main section having a main lumen extending therethrough. The implantable graft may also include a bifurcated section having walls formed with the woven fabric, where the bifurcated section extends from main section, where the bifurcated section includes a first branch and a second branch, and where the first branch and the second branch each include a branch lumen in fluid communication with the main lumen. At least one branch of the bifurcated section may include a branch taper formed by a seam connecting a first woven layer and a second woven layer. A seam extension may extend outwardly along the seam of the branch taper, the seam extension being a single-layer woven structure.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: March 22, 2022
    Assignee: Cook Medical Technologies LLC
    Inventor: Ruwan Sumanasinghe
  • Publication number: 20210330445
    Abstract: A tubular graft may include a first woven layer, where the first woven layer forms a first side of the tubular graft; a second woven layer, where the second woven layer forms a second side of the tubular graft; and a tapered portion having an edge, where the edge connects the first woven layer and the second woven layer, where the tapered portion includes a first weft thread, a second weft thread, and a third weft thread, and where a floating portion of a first warp end extends from the first weft thread to the third weft thread such that the floating portion bypasses the second weft thread.
    Type: Application
    Filed: April 27, 2021
    Publication date: October 28, 2021
    Applicant: Cook Medical Technologies LLC
    Inventor: Ruwan Sumanasinghe
  • Publication number: 20210154036
    Abstract: Disclosed herein are systems and methods for delivering a medical device to a body vessel of a patient. The medical device may be a stent graft, and the delivery assembly may include at least one loop that connects an end stent of the stent graft to a trigger wire of the delivery assembly, thereby providing indirect connection between the device to be delivered and the trigger wire.
    Type: Application
    Filed: November 16, 2020
    Publication date: May 27, 2021
    Applicant: COOK MEDICAL TECHNOLOGIES LLC
    Inventors: Ralf Spindler, Ruwan Sumanasinghe
  • Publication number: 20210093436
    Abstract: An endoluminal graft includes a tubular graft material having a closed sleeve integral with the tubular graft material. The closed sleeve extends a distance along the tubular graft material. A length of wire extends at least partially along the distance and is enclosed by the sleeve. The tubular graft material and the sleeve may comprise a single piece of graft material. The sleeve may be a closed circumferential sleeve and/or a closed longitudinal sleeve.
    Type: Application
    Filed: December 10, 2020
    Publication date: April 1, 2021
    Applicant: Cook Medical Technologies LLC
    Inventors: Jarin A. Kratzberg, Erik E. Rasmussen, Ruwan Sumanasinghe, Woong Kim
  • Publication number: 20200405512
    Abstract: The present embodiments provide a system for controlled release of a portion of a stent. In one example, the system comprises a stent having proximal and distal regions, and a first barb coupled to the stent. A trigger wire restrains a portion of the stent in a delivery state. The system further comprises a barb release wire having proximal and distal regions, and an engagement region disposed therebetween. The distal region of the barb release wire is coupled to the trigger wire, and the engagement region of the barb release wire is disposed around a portion of the first barb to restrain the first barb in the delivery state. In one example, distal retraction of the trigger wire causes a simultaneous distal retraction of the barb release wire.
    Type: Application
    Filed: June 22, 2020
    Publication date: December 31, 2020
    Applicant: COOK MEDICAL TECHNOLOGIES LLC
    Inventors: Ruwan Sumanasinghe, Ralf Spindler
  • Patent number: 10869747
    Abstract: An endoluminal graft includes a tubular graft material having a closed sleeve integral with the tubular graft material. The closed sleeve extends a distance along the tubular graft material. A length of wire extends at least partially along the distance and is enclosed by the sleeve. The tubular graft material and the sleeve may comprise a single piece of graft material. The sleeve may be a closed circumferential sleeve and/or a closed longitudinal sleeve.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: December 22, 2020
    Assignee: Cook Medical Technologies LLC
    Inventors: Jarin A. Kratzberg, Erik E. Rasmussen, Ruwan Sumanasinghe, Woong Kim
  • Publication number: 20200289253
    Abstract: A tubular graft for use in a stent graft. The tubular graft may include a first woven layer that forms a first side of the tubular graft, where the first woven layer has a set of first warp ends. A second woven layer may forma a second side of the tubular graft, where the second woven layer has a set of second warp ends, and where the second warp ends are distinct from the first warp ends. A woven pocket flap may extend from the first woven layer, where a pocket opening is defined between the woven pocket flap and the first woven layer, and where the woven pocket flap includes at least one common weft yarn with the first woven layer.
    Type: Application
    Filed: March 15, 2019
    Publication date: September 17, 2020
    Applicant: Cook Medical Technologies LLC
    Inventors: Ruwan Sumanasinghe, Woong Kim
  • Patent number: 10596364
    Abstract: In one aspect, fluid flow control systems, such as for medical applications, may include a resistance barrier and a flexible ring that may receive a device. The resistance barrier may exert barrier forces on the device, and the flexible ring may exert ring forces on the device, in order to create a fluid tight seal.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: March 24, 2020
    Assignee: COOK MEDICAL TECHNOLOGIES LLC
    Inventor: Ruwan Sumanasinghe
  • Publication number: 20200069411
    Abstract: An implantable graft may include a main section having walls formed with a woven fabric, the main section having a main lumen extending therethrough. The implantable graft may also include a bifurcated section having walls formed with the woven fabric, where the bifurcated section extends from main section, where the bifurcated section includes a first branch and a second branch, and where the first branch and the second branch each include a branch lumen in fluid communication with the main lumen. At least one branch of the bifurcated section may include a branch taper formed by a seam connecting a first woven layer and a second woven layer. A seam extension may extend outwardly along the seam of the branch taper, the seam extension being a single-layer woven structure.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 5, 2020
    Applicant: Cook Medical Technologies LLC
    Inventor: Ruwan Sumanasinghe
  • Publication number: 20190030314
    Abstract: In one aspect, fluid flow control systems, such as for medical applications, may include a resistance barrier and a flexible ring that may receive a device. The resistance barrier may exert barrier forces on the device, and the flexible ring may exert ring forces on the device, in order to create a fluid tight seal.
    Type: Application
    Filed: July 27, 2017
    Publication date: January 31, 2019
    Applicant: Cook Medical Technologies LLC
    Inventor: Ruwan Sumanasinghe
  • Publication number: 20180325704
    Abstract: An endoluminal graft includes a tubular graft material having a closed sleeve integral with the tubular graft material. The closed sleeve extends a distance along the tubular graft material. A length of wire extends at least partially along the distance and is enclosed by the sleeve. The tubular graft material and the sleeve may comprise a single piece of graft material. The sleeve may be a closed circumferential sleeve and/or a closed longitudinal sleeve.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 15, 2018
    Inventors: Jarin A. Kratzberg, Erik E. Rasmussen, Ruwan Sumanasinghe, Woong Kim
  • Publication number: 20180325651
    Abstract: In one example, a prosthesis comprises a generally tubular graft material having an inner and outer perimeter, and a plurality of pleats between the inner and outer perimeters in a first state. At least one stent is coupled to the graft material. At least one layer of biocompatible material is coupled to the graft material in the first state. One or more sections of the at least one layer biodegrade over a first period of time at a first biodegradable rate. At least one of the plurality of pleats of the graft material unfolds to permit radial expansion of the graft material after the first period of time, and the stent provides support for the radial expansion of the graft material.
    Type: Application
    Filed: May 4, 2018
    Publication date: November 15, 2018
    Applicant: COOK MEDICAL TECHNOLOGIES LLC
    Inventors: Ruwan Sumanasinghe, Ralf Spindler