Patents by Inventor Clifford Teoh
Clifford Teoh 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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Publication number: 20140277094Abstract: A vaso-occlusive device delivery assembly includes a pusher assembly having a proximal end, a distal end, and a pusher lumen extending therebetween; a vaso-occlusive device; and a tubular member mechanically connecting the pusher assembly to the vaso-occlusive device, the tubular member having a proximal end, a distal end, a tube lumen extending therebetween, and a detach zone, wherein the proximal end of the tubular member extends into the pusher assembly lumen at the distal end of the pusher assembly. A heat generating member is disposed in the tube lumen, such that, when activated, the heat generating member generates heat that melts or otherwise thermally degrades the tubular member at the detach zone, thereby detaching the vaso-occlusive device from the pusher assembly.Type: ApplicationFiled: March 12, 2014Publication date: September 18, 2014Applicants: STRYKER NV OPERATIONS LIMITED, STRYKER CORPORATIONInventors: Hancun Chen, Clifford Teoh, Lantao Guo, Timothy Odell, Richard Murphy
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Publication number: 20120271344Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.Type: ApplicationFiled: July 2, 2012Publication date: October 25, 2012Applicants: STRYKER NV OPERATIONS LIMITED, STRYKER CORPORATIONInventors: Russell FORD, Scott MCGILL, Clifford TEOH, Michael WILLIAMS, Kamal RAMZIPOOR, Like QUE, Ann HUANG, Elena OO, Christina MA, Stella CHU
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Patent number: 8226660Abstract: A vaso-occlusive implant has a primary helical-coil shape that defines a primary axis and a three-dimensional secondary shape. The secondary shape includes a substantially helical section and a second section having a plurality of non-overlapping loops or loop sections. Each loop defines a plane that is oriented at an angle from about 30-150 degrees relative to a plane defined by an immediately preceding or immediately succeeding loop along the primary axis. The coil sections or loops can be generally circular loops or other smooth shapes.Type: GrantFiled: January 14, 2009Date of Patent: July 24, 2012Assignees: Stryker Corporation, Stryker NV Operations LimitedInventors: Clifford Teoh, Michael P. Wallace
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Patent number: 8221483Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.Type: GrantFiled: May 16, 2008Date of Patent: July 17, 2012Assignees: Stryker Corporation, Stryker NV Operations LimitedInventors: Russell Ford, Scott McGill, Clifford Teoh, Michael Williams, Kamal Ramzipoor, Like Que, Ann Huang, Elena Oo, Christina Ma, Stella Chu
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Patent number: 8016852Abstract: A vaso-occlusive device is disclosed. The device includes a vaso-occlusive member having a coating disposed thereon. In accordance with one embodiment, the coating comprises a polyacrylic material. In accordance with another embodiment, the coating comprises a polyvinyl alcohol-based material. In accordance with other embodiments, various other materials and coatings are applied to at least a portion of a vaso-occlusive device.Type: GrantFiled: April 9, 2003Date of Patent: September 13, 2011Assignees: Stryker Corporation, Stryker NV Operations LimitedInventors: Hanh Ho, Kenneth W. Quan, Jr., Clifford Teoh, Robert M. Abrams, Joseph C. Eder, Paul C. Slaikeu, Michael P. Wallace, James Barry
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Publication number: 20110118768Abstract: Methods and devices for blocking orifices and occluding cavities within a patient are provided. The device in one variation comprises first and second tubular members attached to a collapsible sealing element. The device can be placed through an orifice and the collapsible sealing element can be collapsed to seal the orifice. An embolic may be introduced distal to the sealing element to occlude a cavity. The device may incorporate a locking mechanism which can be engaged to lock the sealing element into the collapsed position. The device may incorporate a valve to prevent flow through the tubular members, for example to prevent egress of the embolic from a cavity. The device can be detached to provide a permanent seal of the orifice, and can retain the embolic within the cavity. The device may be used in conjunction with a stent or other retention device to assist the sealing element in maintaining the seal.Type: ApplicationFiled: January 25, 2011Publication date: May 19, 2011Inventors: Tri Tran, Kim Nguyen, Hanh Ho, My Doan, Richard Murphy, Michael P. Wallace, Clifford Teoh
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Patent number: 7892248Abstract: Methods and devices for blocking orifices and occluding cavities within a patient are provided. The device in one variation comprises first and second tubular members attached to a collapsible sealing element. The device can be placed through an orifice and the collapsible sealing element can be collapsed to seal the orifice. An embolic may be introduced distal to the sealing element to occlude a cavity. The device may incorporate a locking mechanism which can be engaged to lock the sealing element into the collapsed position. The device may incorporate a valve to prevent flow through the tubular members, for example to prevent egress of the embolic from a cavity. The device can be detached to provide a permanent seal of the orifice, and can retain the embolic within the cavity. The device may be used in conjunction with a stent or other retention device to assist the sealing element in maintaining the seal.Type: GrantFiled: May 14, 2007Date of Patent: February 22, 2011Assignee: Stryker NV Operations LimitedInventors: Tri Tran, Kim Nguyen, Hanh Ho, My Doan, Richard Murphy, Michael P Wallace, Clifford Teoh
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Publication number: 20100160944Abstract: Disclosed herein are vaso-occlusive assemblies for deploying implantable devices into the vasculature of a patient. More particularly, disclosed herein are vaso-occlusive assemblies comprising at least one thermally detachable polymer structure permanently attached to the implantable device and non-permanently attached to the delivery device prior to deployment. Also described are methods of making and using these assemblies.Type: ApplicationFiled: October 28, 2009Publication date: June 24, 2010Inventors: Clifford Teoh, John M. K. Daniel
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Publication number: 20100137898Abstract: Disclosed herein are vaso-occlusive devices for forming occluding the vasculature of a patient. More particularly, disclosed herein are vaso-occlusive devices comprising an implantable device, an attachment assembly and a stretch-resistant member secured to the attachment assembly and to the implantable device. Also disclosed are methods of making and using these devices.Type: ApplicationFiled: October 27, 2009Publication date: June 3, 2010Inventor: Clifford Teoh
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Publication number: 20100106162Abstract: The present invention provides an embolic assembly delivery apparatus having superior flexibility characteristics at its distal end, that is, at the point of attachment of the embolic assembly to the delivery apparatus. It also provides a method of using the apparatus to deliver an embolic assembly to a target site in a patient's body.Type: ApplicationFiled: January 5, 2010Publication date: April 29, 2010Applicant: BOSTON SCIENTIFIC SCIMED, INC.Inventors: Kevin M. Jaeger, Stephen C. Porter, Clifford Teoh, Michael Wallace, Maria Pizarro
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Publication number: 20100063572Abstract: Described herein are composite detachment mechanisms for implantable devices and assemblies comprising these devices. Also provided are methods of using the detachment mechanisms and assemblies.Type: ApplicationFiled: September 9, 2009Publication date: March 11, 2010Inventors: Clifford Teoh, Francis Tang
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Patent number: 7651513Abstract: The present invention provides an embolic assembly delivery apparatus having superior flexibility characteristics at its distal end, that is, at the point of attachment of the embolic assembly to the delivery apparatus. It also provides a method of using the apparatus to deliver an embolic assembly to a target site in a patient's body.Type: GrantFiled: April 3, 2003Date of Patent: January 26, 2010Assignee: Boston Scientific Scimed, Inc.Inventors: Clifford Teoh, Stephen C. Porter, Kevin M. Jaeger, Michael Wallace
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Publication number: 20090177261Abstract: Disclosed herein are detachment mechanisms for vaso-occlusive devices that allow for rapid operator-controlled release of the vaso-occlusive device into the selected site. Also disclosed are vaso-occlusive assemblies comprising these detachment mechanisms and methods of using these detachment mechanisms and vaso-occlusive assemblies.Type: ApplicationFiled: January 5, 2009Publication date: July 9, 2009Inventors: Clifford Teoh, Michael Williams, Gregory E. Mirigian, Kirsten Carroll, James M. Anderson, Jay Rassat, Benjamin Arcand, Derek Sutermeister
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Publication number: 20090125054Abstract: A vaso-occlusive implant has a primary helical-coil shape that defines a primary axis and a three-dimensional secondary shape. The secondary shape includes a substantially helical section and a second section having a plurality of non-overlapping loops or loop sections. Each loop defines a plane that is oriented at an angle from about 30-150 degrees relative to a plane defined by an immediately preceding or immediately succeeding loop along the primary axis. The coil sections or loops can be generally circular loops or other smooth shapes.Type: ApplicationFiled: January 14, 2009Publication date: May 14, 2009Applicant: Boston Scientific Scimed, IncInventors: Clifford Teoh, Michael P. Wallace
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Publication number: 20090062726Abstract: An implant assembly comprises an elongated pusher member, and an implantable device (e.g., a vaso-occlusive device) mounted to the distal end of the pusher member. The implant assembly further comprises an electrolytically severable joint disposed on the pusher member, wherein the implantable device detaches from the pusher member when the severable joint is severed, and a return electrode carried by the distal end of the pusher member (e.g., a coil disposed about the pusher member) in proximity to, but electrically isolated from, the severable joint. The implant assembly further comprises a terminal carried by the proximal end of the pusher member in electrical communication with the severable joint.Type: ApplicationFiled: May 16, 2008Publication date: March 5, 2009Applicant: Bsoton Scientific Scimed, Inc.Inventors: Russell Ford, Scott McGill, Clifford Teoh, Michael Williams, Kamal Ramzipoor, Like Que, Ann Huang, Elena Oo, Christina Ma, Stella Chu
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Patent number: 7488332Abstract: A vaso-occlusive implant has a primary helical-coil shape that defines a primary axis and a three-dimensional secondary shape. The secondary shape includes a substantially helical section and a second section having a plurality of non-overlapping loops or loop sections. Each loop defines a plane that is oriented at an angle from about 30-150 degrees relative to a plane defined by an immediately preceding or immediately succeeding loop along the primary axis. The coil sections or loops can be generally circular loops or other smooth shapes.Type: GrantFiled: March 1, 2004Date of Patent: February 10, 2009Assignee: Boston Scientific Scimed, Inc.Inventors: Clifford Teoh, Michael P. Wallace
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Patent number: 7485122Abstract: Vaso-occlusive devices are provided for occluding an aneurysm within the human vasculature. The vaso-occlusive device also includes a stretch-resisting member that extends through at least a portion of a lumen of the primary coil and is directly or indirectly attached to the primary coil at two locations axially separated from each other to prevent or minimize axial stretching of the primary coil. At one location, the stretch-resisting member is coupled to the primary coil via a flexible anchor assembly disposed within the lumen. The anchor coil is incorporated into the primary coil by disposing the anchor coil windings between the windings of the primary coil.Type: GrantFiled: June 27, 2002Date of Patent: February 3, 2009Assignee: Boston Scientific Scimed, Inc.Inventor: Clifford Teoh
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Publication number: 20070213764Abstract: Methods and devices for blocking orifices and occluding cavities within a patient are provided. The device in one variation comprises first and second tubular members attached to a collapsible sealing element. The device can be placed through an orifice and the collapsible sealing element can be collapsed to seal the orifice. An embolic may be introduced distal to the sealing element to occlude a cavity. The device may incorporate a locking mechanism which can be engaged to lock the sealing element into the collapsed position. The device may incorporate a valve to prevent flow through the tubular members, for example to prevent egress of the embolic from a cavity. The device can be detached to provide a permanent seal of the orifice, and can retain the embolic within the cavity. The device may be used in conjunction with a stent or other retention device to assist the sealing element in maintaining the seal.Type: ApplicationFiled: May 14, 2007Publication date: September 13, 2007Applicant: BOSTON SCIENTIFIC SCIMED INC.Inventors: Tri Tran, Kim Nguyen, Hanh Ho, My Doan, Richard Murphy, Michael Wallace, Clifford Teoh
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Patent number: 7229454Abstract: Methods and devices for blocking orifices and occluding cavities within a patient are provided. The device in one variation comprises first and second tubular members attached to a collapsible sealing element. The device can be placed through an orifice and the collapsible sealing element can be collapsed to seal the orifice. An embolic may be introduced distal to the sealing element to occlude a cavity. The device may incorporate a locking mechanism which can be engaged to lock the sealing element into the collapsed position. The device may incorporate a valve to prevent flow through the tubular members, for example to prevent egress of the embolic from a cavity. The device can be detached to provide a permanent seal of the orifice, and can retain the embolic within the cavity. The device may be used in conjunction with a stent or other retention device to assist the sealing element in maintaining the seal.Type: GrantFiled: January 7, 2003Date of Patent: June 12, 2007Assignee: Boston Scientific Scimed, Inc.Inventors: Tri Tran, Kim Nguyen, Hanh Ho, My Doan, Richard Murphy, Michael P. Wallace, Clifford Teoh
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Publication number: 20070055302Abstract: A device for delivering an occlusive element includes an elongate sheath having a lumen therein. An elongate core member is disposed within the lumen and is formed from a proximal portion and distal portion connected via a joint. The distal portion of the elongate member includes a severable junction secured to the occlusive element. A marker coil is coaxially arranged around the distal portion of the elongate core member and is partially disposed inside the sheath lumen. A coil member is coaxially arranged around the distal portion of the elongate core member and coaxially arranged around at least a portion of the marker coil extending outside the lumen of the sheath. The coil member is secured at a distal end thereof to the distal portion of the elongate core member. The device resists axial compression while allowing for radial bending.Type: ApplicationFiled: June 13, 2006Publication date: March 8, 2007Applicant: Boston Scientific Scimed, Inc.Inventors: William Henry, Charles Daly, Russell Ford, Michael Williams, Hanh Duong, Hughie Devaney, Kamal Ramzipoor, Clifford Teoh, Richard Murphy, Andrew Huffmaster, Scott McGill