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).
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Patent number: 11980540Abstract: 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: GrantFiled: December 10, 2020Date of Patent: May 14, 2024Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: Jarin A. Kratzberg, Erik E. Rasmussen, Ruwan Sumanasinghe, Woong Kim
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Patent number: 11969335Abstract: 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: GrantFiled: April 27, 2021Date of Patent: April 30, 2024Assignee: COOK MEDICAL TECHNOLOGIES LLCInventor: Ruwan Sumanasinghe
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Patent number: 11957564Abstract: 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: GrantFiled: March 21, 2022Date of Patent: April 16, 2024Assignee: Cook Medical Technologies LLCInventor: Ruwan Sumanasinghe
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Patent number: 11786388Abstract: 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: GrantFiled: March 12, 2021Date of Patent: October 17, 2023Assignee: COOK MEDICAL TECHNOLOGIES LLCInventor: Ruwan Sumanasinghe
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Patent number: 11690705Abstract: 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: GrantFiled: March 15, 2019Date of Patent: July 4, 2023Assignee: Cook Medical Technologies LLCInventors: Ruwan Sumanasinghe, Woong Kim
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Publication number: 20220287860Abstract: 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: ApplicationFiled: March 12, 2021Publication date: September 15, 2022Applicant: COOK MEDICAL TECHNOLOGIES LLCInventor: Ruwan Sumanasinghe
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Publication number: 20220202559Abstract: 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: ApplicationFiled: March 21, 2022Publication date: June 30, 2022Applicant: Cook Medical Technologies LLCInventor: Ruwan Sumanasinghe
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Patent number: 11278391Abstract: 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: GrantFiled: August 28, 2019Date of Patent: March 22, 2022Assignee: Cook Medical Technologies LLCInventor: Ruwan Sumanasinghe
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Publication number: 20210330445Abstract: 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: ApplicationFiled: April 27, 2021Publication date: October 28, 2021Applicant: Cook Medical Technologies LLCInventor: Ruwan Sumanasinghe
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Publication number: 20210154036Abstract: 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: ApplicationFiled: November 16, 2020Publication date: May 27, 2021Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: Ralf Spindler, Ruwan Sumanasinghe
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Publication number: 20210093436Abstract: 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: ApplicationFiled: December 10, 2020Publication date: April 1, 2021Applicant: Cook Medical Technologies LLCInventors: Jarin A. Kratzberg, Erik E. Rasmussen, Ruwan Sumanasinghe, Woong Kim
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Publication number: 20200405512Abstract: 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: ApplicationFiled: June 22, 2020Publication date: December 31, 2020Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: Ruwan Sumanasinghe, Ralf Spindler
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Patent number: 10869747Abstract: 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: GrantFiled: May 10, 2017Date of Patent: December 22, 2020Assignee: Cook Medical Technologies LLCInventors: Jarin A. Kratzberg, Erik E. Rasmussen, Ruwan Sumanasinghe, Woong Kim
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Publication number: 20200289253Abstract: 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: ApplicationFiled: March 15, 2019Publication date: September 17, 2020Applicant: Cook Medical Technologies LLCInventors: Ruwan Sumanasinghe, Woong Kim
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Patent number: 10596364Abstract: 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: GrantFiled: July 27, 2017Date of Patent: March 24, 2020Assignee: COOK MEDICAL TECHNOLOGIES LLCInventor: Ruwan Sumanasinghe
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Publication number: 20200069411Abstract: 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: ApplicationFiled: August 28, 2019Publication date: March 5, 2020Applicant: Cook Medical Technologies LLCInventor: Ruwan Sumanasinghe
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Publication number: 20190030314Abstract: 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: ApplicationFiled: July 27, 2017Publication date: January 31, 2019Applicant: Cook Medical Technologies LLCInventor: Ruwan Sumanasinghe
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Publication number: 20180325704Abstract: 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: ApplicationFiled: May 10, 2017Publication date: November 15, 2018Inventors: Jarin A. Kratzberg, Erik E. Rasmussen, Ruwan Sumanasinghe, Woong Kim
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Publication number: 20180325651Abstract: 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: ApplicationFiled: May 4, 2018Publication date: November 15, 2018Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: Ruwan Sumanasinghe, Ralf Spindler