Patents by Inventor Gregory Waimong Chan
Gregory Waimong Chan 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: 9687630Abstract: Methods and compositions for treating post-myocardial infarction damage are herein disclosed. In some embodiments, a carrier with a treatment agent may be fabricated. The carrier can be formulated from a bioerodable, sustained-release substance. The resultant loaded carrier may then be suspended in at least one component of a two-component matrix system for simultaneous delivery to a post-myocardial infarction treatment area.Type: GrantFiled: May 20, 2013Date of Patent: June 27, 2017Assignee: Abbott Cardiovascular Systems Inc.Inventors: Shubhayu Basu, Gregory Waimong Chan
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Patent number: 9539410Abstract: Methods and compositions for treating post-myocardial infarction damage are herein disclosed. In some embodiments, a carrier with a treatment agent may be fabricated. The carrier can be formulated from a bioerodable, sustained-release substance. The resultant loaded carrier may then be suspended in at least one component of a two-component matrix system for simultaneous delivery to a post-myocardial infarction treatment area.Type: GrantFiled: May 20, 2013Date of Patent: January 10, 2017Assignee: Abbott Cardiovascular Systems Inc.Inventors: Shubhayu Basu, Gregory Waimong Chan, Sungwoo Min
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Patent number: 9023010Abstract: Embodiments include an infusion-occlusion system having a delivery catheter, a guide catheter adapted to receive the delivery catheter, and a guidewire with an occlusion device adapted to be received within the guide catheter. The guide catheter of the catheter kit may be provided with an occlusion device at the distal end of the guide catheter. The delivery catheter may have an accessory lumen, coaxial or co-linear lumen, a supporting mandrel, or an occlusion device at its distal end. Moreover, according to some embodiments, occlusion devices may be a single material or a composite balloon having an inner liner and an outer layer of different materials, a high compliance low pressure balloon, or a filter device that restricts particles from passing through but does not restrict fluid, such as blood. An inflation device with a large volume and low volume syringe can be used to inflate the balloon.Type: GrantFiled: October 24, 2007Date of Patent: May 5, 2015Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Jessica G. Chiu, Gregory Waimong Chan, Gabriel Asongwe, Robert C. Esselstein, Douglas Gesswein, Srinivasan Sridharan, Nianjiong Joan Bei, William E. Webler, Stephen G. Schaible, Mina Chow, Yan Shen, Hongzhi Bai, Mark J. Bly, Thomas R. Hatten
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Publication number: 20130338633Abstract: Methods and compositions for treating post-myocardial infarction damage are herein disclosed. In some embodiments, a carrier with a treatment agent may be fabricated. The carrier can be formulated from a bioerodable, sustained-release substance. The resultant loaded carrier may then be suspended in at least one component of a two-component matrix system for simultaneous delivery to a post-myocardial infarction treatment area.Type: ApplicationFiled: May 20, 2013Publication date: December 19, 2013Applicant: Abbott Cardiovascular Systems, Inc.Inventors: Shubhayu Basu, Gregory Waimong Chan
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Publication number: 20130338634Abstract: Methods and compositions for treating post-myocardial infarction damage are herein disclosed. In some embodiments, a carrier with a treatment agent may be fabricated. The carrier can be formulated from a bioerodable, sustained-release substance. The resultant loaded carrier may then be suspended in at least one component of a two-component matrix system for simultaneous delivery to a post-myocardial infarction treatment area.Type: ApplicationFiled: May 20, 2013Publication date: December 19, 2013Applicant: Abbott Cardiovascular Systems, Inc.Inventors: Shubhayu Basu, Gregory Waimong Chan, Sungwoo Min
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Patent number: 8182463Abstract: A delivery catheter that includes a flexible shaft having a proximal end and a distal end, the distal end having an outer diameter less than about 13 mm; a delivery lumen having a proximal end and a distal end, the delivery lumen within the flexible shaft, the delivery lumen having at least an outlet port or at least one side hole at the distal end of the delivery lumen, the delivery lumen having a cross-sectional area at least about 5 mm2; a pressure monitoring lumen having a proximal end and a distal end, the pressure monitoring lumen within the flexible shaft; a pressure port adjacent to and connected to the distal end of the pressure monitoring lumen; a balloon inflation lumen having a proximal end and a distal end, the balloon inflation lumen within the flexible shaft; a soft tip at the distal end of the flexible shaft; a balloon at the distal end of the flexible shaft, the balloon connected to the distal end of the balloon inflation lumen, the balloon includes at least one of the following materials, poType: GrantFiled: December 11, 2006Date of Patent: May 22, 2012Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Jessica Chiu, Gregory Waimong Chan, Hongzhi Bai, Nianjiong J. Bei, Mark J. Bly, Srinivasan Sridharan, Tom Hatten
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Patent number: 8152758Abstract: An apparatus including an expandable body; at least one delivery cannula coupled to an exterior portion of the expandable body; a needle having a protuberance thereon disposed in a lumen of the at least one delivery cannula; a stop disposed in the lumen of the at least one delivery cannula at a position distal to the protuberance on the needle. A method including positioning a catheter assembly including at least one needle delivery device disposed in an at least one delivery cannula, the at least one delivery cannula having an exit end; modifying the shape of the catheter assembly to modify the orientation of the exit end of the at least one delivery cannula at a region of interest; and advancing the at least one needle delivery device beyond the exit end of the at least one delivery cannula according to a controlled orientation.Type: GrantFiled: August 20, 2007Date of Patent: April 10, 2012Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Gregory Waimong Chan, Fernando Gonzalez, Thuhuong Thi Phan, Dwight A. Ambat, Manolo Lumauig, Mina W. Chow
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Patent number: 7887661Abstract: Embodiments include an infusion-occlusion system having a delivery catheter, a guide catheter adapted to receive the delivery catheter, and a guidewire with an occlusion device adapted to be received within the guide catheter. The guide catheter of the catheter kit may be provided with an occlusion device at the distal end of the guide catheter. The delivery catheter may have an accessory lumen, coaxial or co-linear lumen, a supporting mandrel, or an occlusion device at its distal end. Moreover, according to some embodiments, occlusion devices may be a single material or a composite balloon having an inner liner and an outer layer of different materials, a high compliance low pressure balloon, or a filter device that restricts particles from passing through but does not restrict fluid, such as blood. An inflation device with a large volume and low volume syringe can be used to inflate the balloon.Type: GrantFiled: October 24, 2007Date of Patent: February 15, 2011Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Jessica G. Chiu, Gregory Waimong Chan, Gabriel Asongwe, Robert C. Esselstein, Douglas Gesswein, Srinivasan Sridharan, Nianjiong Joan Bei, William E. Webler, Stephen G. Schaible, Mina Chow, Yan Shen, Hongzhi Bai, Mark J. Bly, Thomas R. Hatten
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Publication number: 20090259268Abstract: A cardiac rhythm management (CRM) system includes an implantable medical device that delivers combined electrical and drug therapies. The implantable medical device includes a drug reservoir that is refillable after implantation. In one embodiment, the implantable medical device includes an implantable housing encapsulating a pulse generator circuit and a drug delivery device. In another embodiment, the implantable medical device includes an implantable pulse generator and an implantable drug delivery device fastened to each other.Type: ApplicationFiled: June 25, 2009Publication date: October 15, 2009Inventor: Gregory Waimong Chan
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Patent number: 7567841Abstract: A cardiac rhythm management (CRM) system includes an implantable medical device that delivers combined electrical and drug therapies. The implantable medical device includes a drug reservoir that is refillable after implantation. In one embodiment, the implantable medical device includes an implantable housing encapsulating a pulse generator circuit and a drug delivery device. In another embodiment, the implantable medical device includes an implantable pulse generator and an implantable drug delivery device fastened to each other.Type: GrantFiled: August 20, 2004Date of Patent: July 28, 2009Assignee: Cardiac Pacemakers, Inc.Inventor: Gregory Waimong Chan
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Publication number: 20090018498Abstract: Embodiments include an infusion-occlusion system having a delivery catheter, a guide catheter adapted to receive the delivery catheter, and a guidewire with an occlusion device adapted to be received within the guide catheter. The guide catheter of the catheter kit may be provided with an occlusion device at the distal end of the guide catheter. The delivery catheter may have an accessory lumen, coaxial or co-linear lumen, a supporting mandrel, or an occlusion device at its distal end. Moreover, according to some embodiments, occlusion devices may be a single material or a composite balloon having an inner liner and an outer layer of different materials, a high compliance low pressure balloon, or a filter device that restricts particles from passing through but does not restrict fluid, such as blood. An inflation device with a large volume and low volume syringe can be used to inflate the balloon.Type: ApplicationFiled: October 24, 2007Publication date: January 15, 2009Inventors: Jessica G. Chiu, Gregory Waimong Chan, Gabriel Asongwe, Robert C. Esselstein, Douglas Gesswein, Srinivasan Sridharan, Nianjiong Joan Bei, William E. Webler, Stephen G. Schaible, Mina Chow, Yan Shen, Hongzhi Bai, Mark J. Bly, Thomas R. Hatten
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Publication number: 20090005733Abstract: Embodiments include an infusion-occlusion system having a delivery catheter, a guide catheter adapted to receive the delivery catheter, and a guidewire with an occlusion device adapted to be received within the guide catheter. The guide catheter of the catheter kit may be provided with an occlusion device at the distal end of the guide catheter. The delivery catheter may have an accessory lumen, coaxial or co-linear lumen, a supporting mandrel, or an occlusion device at its distal end. Moreover, according to some embodiments, occlusion devices may be a single material or a composite balloon having an inner liner and an outer layer of different materials, a high compliance low pressure balloon, or a filter device that restricts particles from passing through but does not restrict fluid, such as blood. An inflation device with a large volume and low volume syringe can be used to inflate the balloon.Type: ApplicationFiled: October 24, 2007Publication date: January 1, 2009Inventors: Jessica G. Chiu, Gregory Waimong Chan, Gabriel Asongwe, Robert C. Esselstein, Douglas Gesswein, Srinivasan Sridharan, Nianjiong Joan Bei, William E. Webler, Stephen G. Schaible, Mina Chow, Yan Shen, Hongzhi Bai, Mark J. Bly, Thomas R. Hatten
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Patent number: 7273469Abstract: Methods and apparatus for delivering a treatment agent through a percutaneous delivery apparatus are herein disclosed. In some embodiments, an apparatus can include an expandable body with at least one delivery cannula having a lumen therethrough coupled to an exterior portion of the expandable body. The expandable body can be coupled to a delivery assembly with a hub. The delivery cannula can house at least one needle with a protuberance on a distal end. A portion of the hub can house at least one needle with a protuberance on a proximal end. In some embodiments, the protuberance (proximal or distal) can direct the orientation of the needle during an application of treatment agent. In some embodiments, the delivery cannula can include at least one stop for controlling the movement of the needle during an application of treatment agent. In some embodiments, a sheath can be disposed around the delivery cannula.Type: GrantFiled: December 31, 2003Date of Patent: September 25, 2007Assignee: Advanced Cardiovascular Systems, Inc.Inventors: Gregory Waimong Chan, Fernando Gonzalez, Thuhuong Thi Phan, Dwight A. Ambat, Manolo Lumauig, Mina W. Chow
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Patent number: 7250041Abstract: A delivery catheter that includes a flexible shaft having a proximal end and a distal end, the distal end having an outer diameter less than about 13 mm; a delivery lumen having a proximal end and a distal end, the delivery lumen within the flexible shaft, the delivery lumen having at least an outlet port or at least one side hole at the distal end of the delivery lumen, the delivery lumen having a cross-sectional area at least about 5 mm2; a pressure monitoring lumen having a proximal end and a distal end, the pressure monitoring lumen within the flexible shaft; a pressure port adjacent to and connected to the distal end of the pressure monitoring lumen; a balloon inflation lumen having a proximal end and a distal end, the balloon inflation lumen within the flexible shaft; a soft tip at the distal end of the flexible shaft; a balloon at the distal end of the flexible shaft, the balloon connected to the distal end of the balloon inflation lumen, the balloon includes at least one of the following materials, poType: GrantFiled: March 12, 2003Date of Patent: July 31, 2007Assignee: Abbott Cardiovascular Systems Inc.Inventors: Jessica Chiu, Gregory Waimong Chan, Hongzhi Bai, Nianjiong J. Bei, Mark J. Bly, Srinivasan Sridharan, Tom Hatten
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Publication number: 20040181206Abstract: A delivery catheter that includes a flexible shaft having a proximal end and a distal end, the distal end having an outer diameter less than about 13 mm; a delivery lumen having a proximal end and a distal end, the delivery lumen within the flexible shaft, the delivery lumen having at least an outlet port or at least one side hole at the distal end of the delivery lumen, the delivery lumen having a cross-sectional area at least about 5 mm2; a pressure monitoring lumen having a proximal end and a distal end, the pressure monitoring lumen within the flexible shaft; a pressure port adjacent to and connected to the distal end of the pressure monitoring lumen; a balloon inflation lumen having a proximal end and a distal end, the balloon inflation lumen within the flexible shaft; a soft tip at the distal end of the flexible shaft; a balloon at the distal end of the flexible shaft, the balloon connected to the distal end of the balloon inflation lumen, the balloon includes at least one of the following materials, poType: ApplicationFiled: March 12, 2003Publication date: September 16, 2004Inventors: Jessica G. Chiu, Gregory Waimong Chan, Hongzhi Bai, Nianjiong J. Bei, Mark J. Bly, Srinivasan Sridharan, Tom Hatten