Patents by Inventor Yue-Teh Jang
Yue-Teh Jang 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: 6723085Abstract: A filter comprising a porous material is arranged in a generally conical shape having an expandable base and a vertex. An elongate member having a proximal end and a distal end is attached to the expandable base of the porous material at a first circumferential location of the expandable base and extends perpendicularly from a central axis of the filter. An aspiration tube, for removing embolic material under vacuum, communicates with an area at the first circumferential location of the expandable base. Methods of using the filter and occluding devices for protecting a patient from embolization during cardiovascular procedures are described.Type: GrantFiled: June 17, 2002Date of Patent: April 20, 2004Assignee: Edwards Lifesciences CorporationInventors: Yue-Teh Jang, Richard O. Murphy, Roman Turovskiy
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Patent number: 6712783Abstract: An intravascular catheter system has a balloon angioplasty device disposed about a common lumen near its distal end. The common lumen is in communication with multiple lumens within a proximal region of the catheter body to allow for positioning of the catheter over a movable guide wire and convenient delivery of imaging or interventional devices to a desired region of the blood vessel being treated.Type: GrantFiled: February 7, 2001Date of Patent: March 30, 2004Assignee: Cardiovascular Imaging, Inc.Inventor: Yue-Teh Jang
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Patent number: 6692512Abstract: A percutaneous filtration catheter used to entrap emboli from a patient's aorta and heart during cardiac surgery. The catheter has an elongate member, a proximal end, and a distal end. A balloon occluder is mounted on the distal end of the elongate member and an expandable filter is mounted on the elongate member distal the balloon occluder. Methods for using the devices are also disclosed herein.Type: GrantFiled: June 25, 2001Date of Patent: February 17, 2004Assignee: Edwards Lifesciences CorporationInventor: Yue-Teh Jang
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Patent number: 6679872Abstract: Modular systems comprising a cannula and at least one clip-on access port adjacent to a distal end of the cannula to provide insertion of one or more therapeutic or diagnostic devices into a vessel or cardiac tissue through a single incision site. The access port can be removably attached to a distal region of the cannula in a fixed orientation or in any desired orientation. The devices can be operated in combination or independently. The systems can be employed to provide multiple therapies, including blood perfusion, filtration, aspiration, vessel occlusion, atherectomy, and endoscopic devices. Methods of using the system for vessel cannulation are also disclosed herein.Type: GrantFiled: March 27, 2001Date of Patent: January 20, 2004Assignee: Edwards Lifesciences CorporationInventors: Roman Turovskiy, Yue-Teh Jang
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Patent number: 6676682Abstract: The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.Type: GrantFiled: October 5, 2000Date of Patent: January 13, 2004Assignee: SciMed Life Systems, Inc.Inventors: Ross S. Tsugita, Tracy D. Maahs, Yue-Teh Jang
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Publication number: 20030187475Abstract: The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.Type: ApplicationFiled: March 26, 2003Publication date: October 2, 2003Applicant: SCIMED LIFE SYSTEMS, INCInventors: Ross S. Tsugita, Tracy D. Maahs, Yue-Teh Jang
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Publication number: 20030105509Abstract: A catheter system has a balloon angioplasty device disposed about a common lumen near its distal end. The balloon catheter is pre-fitted with a stent which is deployed when the balloon is inflated. The common lumen is in communication with multiple lumens within a proximal region of the catheter body to allow for positioning of the catheter over a movable guide wire and convenient delivery of imaging or interventional devices to a desired region of a body passageway being treated. The procedure for stent deployment optionally includes steps of imaging a lumen by ultrasound before and after stent deployment to identify the site at which a stent is needed, to confirm that the stent is being and has been deployed at a longitudinal position which does not overlap a branched segment of the body passageway, and to ensure that the stent has been radially opened to an optimum diameter.Type: ApplicationFiled: November 27, 2002Publication date: June 5, 2003Inventors: Yue-Teh Jang, Stephen M. Salmon, David A. White, Rizza A. Garcia
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Publication number: 20030065356Abstract: An apparatus suitable for filtering emboli in an open surgical procedure. The apparatus comprises an elongated member having a distal region and a support hoop attached to the distal region. A blood permeable sac is affixed to the support hoop so that the support hoop forms a distally-facing mouth of the blood permeable sac. A guidewire is slideably attached to the elongated member. A delivery sheath is provided having a cavity for accepting the elongated member, support hoop and blood permeable sac, and a lumen extending through the cavity to permit the guidewire to pass therethrough. Methods of use are also described.Type: ApplicationFiled: November 12, 2002Publication date: April 3, 2003Applicant: EMBOL-X, Inc.Inventors: Ross S. Tsugita, Tracy D. Maahs, Yue-Teh Jang
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Patent number: 6537297Abstract: A method for open surgery using a flexible elongate member having a filter on a distal region thereof. The flexible elongate member is introduced into a peripheral artery. The flexible elongate member is advanced to a site within the aorta upstream of a branch vessel from the aorta. The filter is deployed. The aorta is manipulated by diret access. The filter is removed from the aorta. Embolic material is generated and filtered before the flexible elongate member is removed from the aorta.Type: GrantFiled: June 26, 2001Date of Patent: March 25, 2003Assignee: Embol-X, Inc.Inventors: Ross S. Tsugita, Tracy D. Maahs, Yue-Teh Jang
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Publication number: 20030036729Abstract: An ultrasonic imaging catheter comprises a catheter body having a distal region and proximal region. The distal region has a reduced cross-sectional area compared to that of the proximal region, and the proximal region includes at least two lumens therethrough for accommodating a movable guidewire and a rotatable working element, respectively. The catheter body may be inserted over the movable guidewire, with the guidewire passing through a lumen in the distal region and the guidewire lumen in the proximal region. After positioning the catheter body, the guidewire can be retracted from the distal region and into the proximal region, leaving the lumen in the distal region available for the rotatable working element. Such a construction allows over-the-wire imaging of the catheter while minimizing the width of the catheter in the dital region which remains available for placement of the working element.Type: ApplicationFiled: March 7, 2001Publication date: February 20, 2003Inventor: Yue-Teh Jang
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Publication number: 20020161396Abstract: A filter comprising a porous material is arranged in a generally conical shape having an expandable base and a vertex. An elongate member having a proximal end and a distal end is attached to the expandable base of the porous material at a first circumferential location of the expandable base and extends perpendicularly from a central axis of the filter. An aspiration tube, for removing embolic material under vacuum, communicates with an area at the first circumferential location of the expandable base. Methods of using the filter and occluding devices for protecting a patient from embolization during cardiovascular procedures are described.Type: ApplicationFiled: June 17, 2002Publication date: October 31, 2002Applicant: EMBOL-X, Inc.Inventors: Yue-Teh Jang, Richard O. Murphy, Roman Turovskiy
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Publication number: 20020156515Abstract: A catheter system has a balloon angioplasty device disposed about a common lumen near its distal end. The balloon catheter is pre-fitted with a stent which is deployed when the balloon is inflated. The common lumen is in communication with multiple lumens within a proximal region of the catheter body to allow for positioning of the catheter over a movable guide wire and convenient delivery of imaging or interventional devices to a desired region of a body passageway being Treated. The procedure for stent deployment optionally includes steps of imaging a lumen by ultrasound before and after stent deployment to identify the site at which a stent is needed, to confirm that the stent is being and has been deployed at a longitudinal position which does not overlap a branched segment of the body passageway, and to ensure that the stent has been radially opened to an optimum diameter.Type: ApplicationFiled: August 27, 1999Publication date: October 24, 2002Inventors: YUE-TEH JANG, STEPHEN M. SALMON, DAVID A. WHITE, RIZZA A. GARCIA
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Patent number: 6406471Abstract: A filter comprising a porous material is arranged in a generally conical shape having an expandable base and a vertex. A reservoir tip is located at the vertex for collecting filtered embolic material. The tip communicates with a distal port and lumen of an aspiration tube for removing embolic material under vacuum. A vessel occluding device comprising a non-permeable material having an expandable conical shape and communicating with an aspiration tube is also disclosed. Methods of using the filter and occluding devices for protecting a patient from embolization during cardiovascular procedures are described.Type: GrantFiled: December 28, 1999Date of Patent: June 18, 2002Assignee: Embol-X, Inc.Inventors: Yue-Teh Jang, Richard O. Murphy, Roman Turovskiy
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Publication number: 20020045884Abstract: Modular systems comprising a cannula and at least one clip-on access port adjacent to a distal end of the cannula to provide insertion of one or more therapeutic or diagnostic devices into a vessel or cardiac tissue through a single incision site. The access port can be removably attached to a distal region of the cannula in a fixed orientation or in any desired orientation. The devices can be operated in combination or independently. The systems can be employed to provide multiple therapies, including blood perfusion, filtration, aspiration, vessel occlusion, atherectomy, and endoscopic devices. Methods of using the system for vessel cannulation are also disclosed herein.Type: ApplicationFiled: March 27, 2001Publication date: April 18, 2002Applicant: EMBOL-X, INC.Inventors: Roman Turovskiy, Yue-Teh Jang
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Patent number: 6371969Abstract: The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.Type: GrantFiled: December 3, 1999Date of Patent: April 16, 2002Assignee: Scimed Life Systems, Inc.Inventors: Ross S. Tsugita, Tracy D. Maahs, Yue-Teh Jang
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Publication number: 20010053921Abstract: A percutaneous filtration catheter used to entrap emboli from a patient's aorta and heart during cardiac surgery. The catheter has an elongate member, a proximal end, and a distal end. A balloon occluder is mounted on the distal end of the elongate member and an expandable filter is mounted on the elongate member distal the balloon occluder. Methods for using the devices are also disclosed herein.Type: ApplicationFiled: June 25, 2001Publication date: December 20, 2001Applicant: EMBOL-X, Inc.Inventor: Yue-Teh Jang
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Publication number: 20010041909Abstract: The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.Type: ApplicationFiled: June 26, 2001Publication date: November 15, 2001Applicant: EMBOL-X, Inc.Inventors: Ross S. Tsugita, Tracy D. Maahs, Yue-Teh Jang
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Patent number: 6287321Abstract: A percutaneous filtration catheter used to entrap emboli from a patient's aorta and heart during cardiac surgery. The catheter has an elongate member, a proximal end, and a distal end. A balloon occluder is mounted on the distal end of the elongate member and an expandable filter is mounted on the elongate member distal the balloon occluder. Methods for using the devices are also disclosed herein.Type: GrantFiled: November 16, 1999Date of Patent: September 11, 2001Assignee: EMBOL-X, Inc.Inventor: Yue-Teh Jang
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Patent number: 6280432Abstract: Modular systems comprising a cannula and at least one clip-on access port adjacent to a distal end of the cannula to provide insertion of one or more therapeutic or diagnostic devices into a vessel or cardiac tissue through a single incision site. The access port can be removably attached to a distal region of the cannula in a fixed orientation or in any desired orientation. The devices can be operated in combination or independently. The systems can be employed to provide multiple therapies, including blood perfusion, filtration, aspiration, vessel occlusion, atherectomy, and endoscopic devices. Methods of using the system for vessel cannulation are also disclosed herein.Type: GrantFiled: August 4, 1999Date of Patent: August 28, 2001Assignee: Embol-X, Inc.Inventors: Roman Turovskiy, Yue-Teh Jang
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Patent number: 6270513Abstract: The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.Type: GrantFiled: December 3, 1999Date of Patent: August 7, 2001Assignee: Embol-X, Inc.Inventors: Ross S. Tsugita, Tracy D. Maahs, Yue-Teh Jang