Patents by Inventor Alan R. Leewood
Alan R. Leewood 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: 11911270Abstract: The present embodiments provide a medical device for implantation in a patient comprising a stent and a valve. The stent comprises a proximal region comprising a cylindrical shape having a first outer diameter in an expanded state, and a distal region comprising a cylindrical shape having a second outer diameter in the expanded state. The second outer diameter is greater than the first outer diameter. A proximal region of the valve is at least partially positioned within the proximal region of the stent, and the distal region of the valve is at least partially positioned within one of tapered and distal regions of the stent. When implanted, the proximal region of the stent and the proximal region of the valve are aligned with a native valve, and the distal region of the valve is distally spaced-apart from the native valve.Type: GrantFiled: January 13, 2023Date of Patent: February 27, 2024Assignee: Cook Medical Technologies LLCInventors: Timothy A. Chuter, Blayne A. Roeder, Sharath Gopalakrishnamurthy, Alan R. Leewood
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Publication number: 20230255759Abstract: The present embodiments provide a medical device for implantation in a patient comprising a stent and a valve. The stent comprises a proximal region comprising a cylindrical shape having a first outer diameter in an expanded state, and a distal region comprising a cylindrical shape having a second outer diameter in the expanded state. The second outer diameter is greater than the first outer diameter. A proximal region of the valve is at least partially positioned within the proximal region of the stent, and the distal region of the valve is at least partially positioned within one of tapered and distal regions of the stent. When implanted, the proximal region of the stent and the proximal region of the valve are aligned with a native valve, and the distal region of the valve is distally spaced-apart from the native valve.Type: ApplicationFiled: January 13, 2023Publication date: August 17, 2023Applicant: Cook Medical Technologies LLCInventors: Timothy A. Chuter, Blayne A. Roeder, Sharath Gopalakrishnamurthy, Alan R. Leewood
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Patent number: 11602428Abstract: The present embodiments provide a medical device for implantation in a patient comprising a stent and a valve. The stent comprises a proximal region comprising a cylindrical shape having a first outer diameter in an expanded state, and a distal region comprising a cylindrical shape having a second outer diameter in the expanded state. The second outer diameter is greater than the first outer diameter. A proximal region of the valve is at least partially positioned within the proximal region of the stent, and the distal region of the valve is at least partially positioned within one of tapered and distal regions of the stent. When implanted, the proximal region of the stent and the proximal region of the valve are aligned with a native valve, and the distal region of the valve is distally spaced-apart from the native valve.Type: GrantFiled: June 26, 2020Date of Patent: March 14, 2023Assignee: Cook Medical Technologies LLCInventors: Timothy A. Chuter, Blayne A. Roeder, Sharath Gopalakrishnamurthy, Alan R. Leewood
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Publication number: 20230021081Abstract: A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.Type: ApplicationFiled: September 15, 2022Publication date: January 19, 2023Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Blayne A. Roeder
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Patent number: 11554011Abstract: The present embodiments provide a medical device for implantation in a patient comprising a stent and a valve. The stent comprises a proximal region comprising a cylindrical shape having a first outer diameter in an expanded state, and a distal region comprising a cylindrical shape having a second outer diameter in the expanded state. The second outer diameter is greater than the first outer diameter. A proximal region of the valve is at least partially positioned within the proximal region of the stent, and the distal region of the valve is at least partially positioned within one of tapered and distal regions of the stent. When implanted, the proximal region of the stent and the proximal region of the valve are aligned with a native valve, and the distal region of the valve is distally spaced-apart from the native valve.Type: GrantFiled: June 26, 2020Date of Patent: January 17, 2023Assignee: Cook Medical Technologies LLCInventors: Timothy A. Chuter, Blayne A. Roeder, Sharath Gopalakrishnamurthy, Alan R. Leewood
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Patent number: 11471263Abstract: A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.Type: GrantFiled: January 15, 2020Date of Patent: October 18, 2022Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Blayne A. Roeder
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Publication number: 20210015643Abstract: Various stents and stent-graft systems for treatment of medical conditions are disclosed. In one embodiment, an exemplary stent-graft system may be used for endovascular treatment of a thoracic aortic aneurysm. The stent-graft system may comprise proximal and distal components, each comprising a graft having proximal and distal ends, where upon deployment the proximal and distal components at least partially overlap with one another to provide a fluid passageway therebetween. The proximal component may comprise a proximal stent having a plurality of proximal and distal apices connected by a plurality of generally straight portions, where a radius of curvature of at least one of the proximal apices may be greater than the radius of curvature of at least one of the distal apices. The distal component may comprise a proximal z-stent coupled to the graft, where the proximal end of the graft comprises at least scallop formed therein that generally follows the shape of the proximal z-stent.Type: ApplicationFiled: October 5, 2020Publication date: January 21, 2021Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Blayne A. Roeder, Jarin A. Kratzberg, Erik E. Rasmussen
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Patent number: 10828183Abstract: Various stents and stent-graft systems for treatment of medical conditions are disclosed. In one embodiment, an exemplary stent-graft system may be used for endovascular treatment of a thoracic aortic aneurysm. The stent-graft system may comprise proximal and distal components, each comprising a graft having proximal and distal ends, where upon deployment the proximal and distal components at least partially overlap with one another to provide a fluid passageway therebetween. The proximal component may comprise a proximal stent having a plurality of proximal and distal apices connected by a plurality of generally straight portions, where a radius of curvature of at least one of the proximal apices may be greater than the radius of curvature of at least one of the distal apices. The distal component may comprise a proximal z-stent coupled to the graft, where the proximal end of the graft comprises at least scallop formed therein that generally follows the shape of the proximal z-stent.Type: GrantFiled: May 17, 2018Date of Patent: November 10, 2020Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Blayne A. Roeder, Jarin A. Kratzberg, Erik E. Rasmussen
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Publication number: 20200323632Abstract: The present embodiments provide a medical device for implantation in a patient comprising a stent and a valve. The stent comprises a proximal region comprising a cylindrical shape having a first outer diameter in an expanded state, and a distal region comprising a cylindrical shape having a second outer diameter in the expanded state. The second outer diameter is greater than the first outer diameter. A proximal region of the valve is at least partially positioned within the proximal region of the stent, and the distal region of the valve is at least partially positioned within one of tapered and distal regions of the stent. When implanted, the proximal region of the stent and the proximal region of the valve are aligned with a native valve, and the distal region of the valve is distally spaced-apart from the native valve.Type: ApplicationFiled: June 26, 2020Publication date: October 15, 2020Applicant: Cook Medical Technologies LLCInventors: Timothy A. Chuter, Blayne A. Roeder, Sharath Gopalakrishnamurthy, Alan R. Leewood
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Publication number: 20200323631Abstract: The present embodiments provide a medical device for implantation in a patient comprising a stent and a valve. The stent comprises a proximal region comprising a cylindrical shape having a first outer diameter in an expanded state, and a distal region comprising a cylindrical shape having a second outer diameter in the expanded state. The second outer diameter is greater than the first outer diameter. A proximal region of the valve is at least partially positioned within the proximal region of the stent, and the distal region of the valve is at least partially positioned within one of tapered and distal regions of the stent. When implanted, the proximal region of the stent and the proximal region of the valve are aligned with a native valve, and the distal region of the valve is distally spaced-apart from the native valve.Type: ApplicationFiled: June 26, 2020Publication date: October 15, 2020Applicant: Cook Medical Technologies LLCInventors: Timothy A. Chuter, Blayne A. Roeder, Sharath Gopalakrishnamurthy, Alan R. Leewood
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Patent number: 10729531Abstract: A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.Type: GrantFiled: May 20, 2016Date of Patent: August 4, 2020Assignee: Cook Medical Technologies LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Timothy A. M. Chuter, Blayne A. Roeder, Steven J. Charlebois
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Patent number: 10695171Abstract: The present embodiments provide a medical device for implantation in a patient-comprising a stent and a valve. The stent comprises a proximal region comprising a cylindrical shape having a first outer diameter in an expanded state, and a distal region comprising a cylindrical shape having a second outer diameter in the expanded state. The second outer diameter is greater than the first outer diameter. A proximal region of the valve is at least partially positioned within the proximal region of the stent, and the distal region of the valve is at least partially positioned within one of tapered and distal regions of the stent. When implanted, the proximal region of the stent and the proximal region of the valve are aligned with a native valve, and the distal region of the valve is distally spaced-apart from the native valve.Type: GrantFiled: December 14, 2017Date of Patent: June 30, 2020Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: Timothy A. Chuter, Blayne A. Roeder, Sharath Gopalakrishnamurthy, Alan R. Leewood
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Publication number: 20200146806Abstract: A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.Type: ApplicationFiled: January 15, 2020Publication date: May 14, 2020Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Blayne A. Roeder
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Patent number: 10588736Abstract: A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.Type: GrantFiled: April 27, 2018Date of Patent: March 17, 2020Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Blayne A. Roeder
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Patent number: 10456285Abstract: A device for delivering and deploying a radially expandable prosthesis is disclosed and comprises a proximal prosthesis release mechanism having a first resistance and a distal prosthesis release mechanism having a second resistance. The device further comprises an actuation mechanism for actuating the distal and proximal release mechanisms in a single coordinated movement and a biasing compensator for regulating the relationship between the first resistance and the second resistance. Additional aspects of the invention include devices and methods for delivering and deploying a radially expandable prosthesis.Type: GrantFiled: February 2, 2017Date of Patent: October 29, 2019Assignee: Cook Medical Technologies, LLCInventors: Blayne A. Roeder, Alan R. Leewood
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Publication number: 20180263796Abstract: Various stents and stent-graft systems for treatment of medical conditions are disclosed. In one embodiment, an exemplary stent-graft system may be used for endovascular treatment of a thoracic aortic aneurysm. The stent-graft system may comprise proximal and distal components, each comprising a graft having proximal and distal ends, where upon deployment the proximal and distal components at least partially overlap with one another to provide a fluid passageway therebetween. The proximal component may comprise a proximal stent having a plurality of proximal and distal apices connected by a plurality of generally straight portions, where a radius of curvature of at least one of the proximal apices may be greater than the radius of curvature of at least one of the distal apices. The distal component may comprise a proximal z-stent coupled to the graft, where the proximal end of the graft comprises at least scallop formed therein that generally follows the shape of the proximal z-stent.Type: ApplicationFiled: May 17, 2018Publication date: September 20, 2018Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Blayne A. Roeder, Jarin A. Kratzberg, Erik E. Rasmussen
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Publication number: 20180243077Abstract: A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.Type: ApplicationFiled: April 27, 2018Publication date: August 30, 2018Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Timothy A.M. Chuter, Blayne A. Roeder, Steven J. Charlebois
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Patent number: 9993331Abstract: A stent for use in a medical procedure having opposing sets of curved apices, where the curved section of one set of apices has a radius of curvature that is greater than the curved section of the other set of apices. One or more such stents may be attached to a graft material for use in endovascular treatment of, for example, aneurysm, thoracic dissection, or other body vessel condition.Type: GrantFiled: May 24, 2017Date of Patent: June 12, 2018Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Timothy A. M. Chuter, Blayne A. Roeder, Steven J. Charlebois
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Patent number: 9980834Abstract: Various stents and stent-graft systems for treatment of medical conditions are disclosed. In one embodiment, an exemplary stent-graft system may be used for endovascular treatment of a thoracic aortic aneurysm. The stent-graft system may comprise proximal and distal components, each comprising a graft having proximal and distal ends, where upon deployment the proximal and distal components at least partially overlap with one another to provide a fluid passageway therebetween. The proximal component may comprise a proximal stent having a plurality of proximal and distal apices connected by a plurality of generally straight portions, where a radius of curvature of at least one of the proximal apices may be greater than the radius of curvature of at least one of the distal apices. The distal component may comprise a proximal z-stent coupled to the graft, where the proximal end of the graft comprises at least scallop formed therein that generally follows the shape of the proximal z-stent.Type: GrantFiled: November 25, 2015Date of Patent: May 29, 2018Assignee: COOK MEDICAL TECHNOLOGIES LLCInventors: David Brocker, William K. Dierking, Alan R. Leewood, Blayne A. Roeder, Jarin A. Kratzberg, Erik E. Rasmussen
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Publication number: 20180104054Abstract: The present embodiments provide a medical device for implantation in a patient-comprising a stent and a valve. The stent comprises a proximal region comprising a cylindrical shape having a first outer diameter in an expanded state, and a distal region comprising a cylindrical shape having a second outer diameter in the expanded state. The second outer diameter is greater than the first outer diameter. A proximal region of the valve is at least partially positioned within the proximal region of the stent, and the distal region of the valve is at least partially positioned within one of tapered and distal regions of the stent. When implanted, the proximal region of the stent and the proximal region of the valve are aligned with a native valve, and the distal region of the valve is distally spaced-apart from the native valve.Type: ApplicationFiled: December 14, 2017Publication date: April 19, 2018Applicant: COOK MEDICAL TECHNOLOGIES LLCInventors: Timothy A. Chuter, Blayne A. Roeder, Sharath Gopalakrishnamurthy, Alan R. Leewood