Patents by Inventor Sean L. Chow
Sean L. Chow 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).
-
Publication number: 20140257245Abstract: Embolectomy catheters, rapid exchange microcatheters, systems and methods for removing clots or other obstructive matter (e.g., thrombus, thromboemboli, embolic fragments of atherosclerotic plaque, foreign objects, etc.) from blood vessels. This invention is particularly useable for percutaneous removal of thromboemboli or other obstructive matter from small blood vessels of the brain, during an evolving stroke or period of cerebral ischemia. In some embodiments, the embolectomy catheters of this invention are advanceable with or over a guidewire which has been pre-inserted through or around the clot. Also, in some embodiments, the embolectomy catheters include clot removal devices which are deployable from the catheter after the catheter has been advanced at least partially through the clot. The clot removal device may include a deployable wire nest that is designed to prevent a blood clot from passing therethrough.Type: ApplicationFiled: May 23, 2014Publication date: September 11, 2014Applicant: MicroVention, Inc.Inventors: Robert F. Rosenbluth, George R. Greene, JR., Brian J. Cox, Thomas S. Sternweiler, Sean L. Chow, Richard R. Monetti, Teresa L. Halverson, Maricela D. Walker, Robert Pecor
-
Patent number: 8784441Abstract: Embolectomy catheters, rapid exchange microcatheters, systems and methods for removing clots or other obstructive matter (e.g., thrombus, thromboemboli, embolic fragments of atherosclerotic plaque, foreign objects, etc.) from blood vessels. This invention is particularly useable for percutaneous removal of thromboemboli or other obstructive matter from small blood vessels of the brain, during an evolving stroke or period of cerebral ischemia. In some embodiments, the embolectomy catheters of this invention are advanceable with or over a guidewire which has been pre-inserted through or around the clot. Also, in some embodiments, the embolectomy catheters include clot removal devices which are deployable from the catheter after the catheter has been advanced at least partially through the clot. The clot removal device may include a deployable wire nest that is designed to prevent a blood clot from passing therethrough.Type: GrantFiled: February 19, 2010Date of Patent: July 22, 2014Assignee: MicroVention, Inc.Inventors: Robert F. Rosenbluth, George R. Green, Jr., Brian J. Cox, Thomas R. Sternweiler, Sean L. Chow, Richard R. Monetti, Teresa L. Halverson, Maricela D. Walker, Robert Pecor
-
Publication number: 20140135803Abstract: Embolectomy catheters, rapid exchange microcatheters, systems and methods for removing clots or other obstructive matter (e.g., thrombus, thromboemboli, embolic fragments of atherosclerotic plaque, foreign objects, etc.) from blood vessels. This invention is particularly useable for percutaneous removal of thromboemboli or other obstructive matter from small blood vessels of the brain, during an evolving stroke or period of cerebral ischemia. In some embodiments, the embolectomy catheters of this invention are advanceable with or over a guidewire which has been pre-inserted through or around the clot. Also, in some embodiments, the embolectomy catheters include clot removal devices which are deployable from the catheter after the catheter has been advanced at least partially through the clot. The clot removal device may include a deployable wire nest that is designed to prevent a blood clot from passing therethrough.Type: ApplicationFiled: February 19, 2010Publication date: May 15, 2014Inventors: Robert F. Rosenbluth, George R. Green, JR., Brian J. Cox, Thomas R. Sternweiler, Sean L. Chow, Richard R. Monetti, Teresa L. Halverson, Maricela D. Walker, Robert Pecor
-
Patent number: 8100935Abstract: Embolectomy catheters, rapid exchange microcatheters, systems and methods for removing clots or other obstructive matter (e.g., thrombus, thromboemboli, embolic fragments of atherosclerotic plaque, foreign objects, etc.) from blood vessels. This invention is particularly useable for percutaneous removal of thromboemboli or other obstructive matter from small blood vessels of the brain, during an evolving stroke or period of cerebral ischemia. In some embodiments, the embolectomy catheters of this invention are advanceable with or over a guidewire which has been pre-inserted through or around the clot. Also, in some embodiments, the embolectomy catheters include clot removal devices which are deployable from the catheter after the catheter has been advanced at least partially through the clot. The clot removal device may include a deployable wire nest that is designed to prevent a blood clot from passing therethrough.Type: GrantFiled: July 5, 2007Date of Patent: January 24, 2012Assignee: MicroVention, Inc.Inventors: Robert F. Rosenbluth, George R. Green, Jr., Brian J. Cox, Thomas R. Sternweiler, Sean L. Chow, Richard R. Monetti
-
Publication number: 20100145371Abstract: Embolectomy catheters, rapid exchange microcatheters, systems and methods for removing clots or other obstructive matter (e.g., thrombus, thromboemboli, embolic fragments of atherosclerotic plaque, foreign objects, etc.) from blood vessels. This invention is particularly useable for percutaneous removal of thromboemboli or other obstructive matter from small blood vessels of the brain, during an evolving stroke or period of cerebral ischemia. In some embodiments, the embolectomy catheters of this invention are advanceable with or over a guidewire which has been pre-inserted through or around the clot. Also, in some embodiments, the embolectomy catheters include clot removal devices which are deployable from the catheter after the catheter has been advanced at least partially through the clot. The clot removal device may include a deployable wire nest that is designed to prevent a blood clot from passing therethrough.Type: ApplicationFiled: February 19, 2010Publication date: June 10, 2010Inventors: Robert F. Rosenbluth, George R. Green, JR., Brian J. Cox, Thomas R. Sternweiler, Sean L. Chow, Richard R. Monetti, Teresa L. Halverson, Maricela D. Walker, Robert Pecor
-
Patent number: 7691121Abstract: Embolectomy catheters, rapid exchange microcatheters, systems and methods for removing clots or other obstructive matter (e.g., thrombus, thromboemboli, embolic fragments of atherosclerotic plaque, foreign objects, etc.) from blood vessels. This invention is particularly useable for percutaneous removal of thromboemboli or other obstructive matter from small blood vessels of the brain, during an evolving stroke or period of cerebral ischemia. In some embodiments, the embolectomy catheters of this invention are advanceable with or over a guidewire which has been pre-inserted through or around the clot. Also, in some embodiments, the embolectomy catheters include clot removal devices which are deployable from the catheter after the catheter has been advanced at least partially through the clot. The clot removal device may included a deployable wire nest that is designed to prevent a blood clot from passing therethrough.Type: GrantFiled: December 9, 2003Date of Patent: April 6, 2010Assignee: MicroVention, Inc.Inventors: Robert F. Rosenbluth, George R. Green, Jr., Brian J. Cox, Thomas R. Sternweiler, Sean L. Chow, Richard R. Monetti
-
Publication number: 20040133232Abstract: Embolectomy catheters, rapid exchange microcatheters, systems and methods for removing clots or other obstructive matter (e.g., thrombus, thromboemboli, embolic fragments of atherosclerotic plaque, foreign objects, etc.) from blood vessels. This invention is particularly useable for percutaneous removal of thromboemboli or other obstructive matter from small blood vessels of the brain, during an evolving stroke or period of cerebral ischemia. In some embodiments, the embolectomy catheters of this invention are advanceable with or over a guidewire which has been pre-inserted through or around the clot. Also, in some embodiments, the embolectomy catheters include clot removal devices which are deployable from the catheter after the catheter has been advanced at least partially through the clot. The clot removal device may include a deployable wire nest that is designed to prevent a blood clot from passing therethrough.Type: ApplicationFiled: December 9, 2003Publication date: July 8, 2004Applicant: MicroVention, Inc.Inventors: Robert F. Rosenbluth, George R. Green, Brian J. Cox, Thomas R. Sternweiler, Sean L. Chow, Richard R. Monetti
-
Patent number: 6685722Abstract: Embolectomy catheters, rapid exchange microcatheters, systems and methods for removing clots or other obstructive matter (e.g., thrombus, thromboemboli, embolic fragments of atherosclerotic plaque, foreign objects, etc.) from blood vessels. This invention is particularly useable for percutaneous removal of thromboemboli or other obstructive matter from small blood vessels of the brain, during an evolving stroke or period of cerebral ischemia. In some embodiments, the embolectomy catheters of this invention are advanceable with or over a guidewire which has been pre-inserted through or around the clot. Also, in some embodiments, the embolectomy catheters include clot removal devices which are deployable from the catheter after the catheter has been advanced at least partially through the clot. The clot removal device may include a deployable wire nest that is designed to prevent a blood clot from passing therethrough.Type: GrantFiled: November 10, 1999Date of Patent: February 3, 2004Assignee: MicroVention, Inc.Inventors: Robert F. Rosenbluth, George R. Green, Jr., Brian J. Cox, Thomas R. Sternweiler, Sean L. Chow, Richard R. Monetti
-
Patent number: 6296631Abstract: A flow directed microcatheter is formed having a gradually changing flexibility and diameter between a proximal end and a distal end of the microcatheter. The changing properties of the microcatheter according to the present invention provide the flexibility of the distal tip needed to allow the microcatheter to be directed by the flow of blood within the vasculature, and the columnar strength and torquability at the proximal end and along the length of the microcatheter needed to advance and direct the distal tip to the target site. A proximal segment of the microcatheter includes a plurality of strands which vary in diameter to change the flexibility of the microcatheter. A distal segment of the microcatheter includes an inner layer which is compatible with solvents, such as DMSO, and an outer layer which provides strength and flexibility. The proximal segment and the distal segment of the microcatheter are joined by a kink resistant fuse joint.Type: GrantFiled: December 12, 2000Date of Patent: October 2, 2001Inventor: Sean L. Chow
-
Publication number: 20010001117Abstract: A flow directed microcatheter is formed having a gradually changing flexibility and diameter between a proximal end and a distal end of the microcatheter. The changing properties of the microcatheter according to the present invention provide the flexibility of the distal tip needed to allow the microcatheter to be directed by the flow of blood within the vasculature, and the columnar strength and torquability at the proximal end and along the length of the microcatheter needed to advance and direct the distal tip to the target site. A proximal segment of the microcatheter includes a plurality of strands which vary in diameter to change the flexibility of the microcatheter. A distal segment of the microcatheter includes an inner layer which is compatible with solvents, such as DMSO, and an outer layer which provides strength and flexibility. The proximal segment and the distal segment of the microcatheter are joined by a kink resistant fuse joint.Type: ApplicationFiled: December 12, 2000Publication date: May 10, 2001Inventor: Sean L. Chow
-
Patent number: 6171296Abstract: A flow directed microcatheter is formed having a gradually changing flexibility and diameter between a proximal end and a distal end of the microcatheter. The changing properties of the microcatheter according to the present invention provide the flexibility of the distal tip needed to allow the microcatheter to be directed by the flow of blood within the vasculature, and the columnar strength and torquability at the proximal end and along the length of the microcatheter needed to advance and direct the distal tip to the target site. A proximal segment of the microcatheter includes a plurality of strands which vary in diameter to change the flexibility of the microcatheter. A distal segment of the microcatheter includes an inner layer which is compatible with solvents, such as DMSO, and an outer layer which provides strength and flexibility. The proximal segment and the distal segment of the microcatheter are joined by a kink resistant fuse joint.Type: GrantFiled: April 28, 1998Date of Patent: January 9, 2001Assignee: MicroTherapeutics, Inc.Inventor: Sean L. Chow
-
Patent number: 5976120Abstract: A single segment catheter has a gradually changing flexibility from a distal to a proximal end of the catheter. According to one embodiment the catheter includes a plurality of strands within the catheter tube wall which change in diameter between the distal and proximal ends to achieve a catheter having a more flexible distal end and a continuously changing flexibility along the catheter length with no joints or distinct changes in flexibility.Type: GrantFiled: March 26, 1998Date of Patent: November 2, 1999Assignee: Micro Therapeutics, Inc.Inventors: Sean L. Chow, Donald J. Kolehmainen, George Robert Green, Jr.