Patents by Inventor Elbert Tzeng
Elbert Tzeng 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: 20200281751Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: ApplicationFiled: May 22, 2020Publication date: September 10, 2020Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, Bill Gould
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Patent number: 10660775Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module. An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: GrantFiled: June 23, 2017Date of Patent: May 26, 2020Assignee: Endologix, Inc.Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, Bill Gould
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Publication number: 20170304098Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module. An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: ApplicationFiled: June 23, 2017Publication date: October 26, 2017Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, Bill Gould
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Patent number: 9687374Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: GrantFiled: December 14, 2016Date of Patent: June 27, 2017Assignee: Endologix, Inc.Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, Bill Gould
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Publication number: 20170086998Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: ApplicationFiled: December 14, 2016Publication date: March 30, 2017Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, Bill Gould
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Patent number: 9549835Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: GrantFiled: August 18, 2014Date of Patent: January 24, 2017Assignee: Endologix, Inc.Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, Bill Gould
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Publication number: 20140358214Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: ApplicationFiled: August 18, 2014Publication date: December 4, 2014Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, Bill Gould
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Patent number: 8808350Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: GrantFiled: February 29, 2012Date of Patent: August 19, 2014Assignee: Endologix, Inc.Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, William L. Gould
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Publication number: 20120226341Abstract: A modular catheter system including a sheath projecting distally from a delivery catheter having a main body module An inner core module carrying a stent thereon, the inner core being axially movable through the main body of the delivery catheter and the delivery catheter sheath, a handle member supported by the main body of the delivery catheter, the handle member being selectively axially engageable with the inner core such that the handle member and the inner core move together in an axial direction when the handle member is engaged with the inner core; and an adjustment member supported by the main body, the adjustment member being configured such that rotation of the adjustment member causes the adjustment member to move axially along the main body by either axially sliding the handle member relative to the main body or by rotating the adjustment member.Type: ApplicationFiled: February 29, 2012Publication date: September 6, 2012Applicant: ENDOLOGIX, INC.Inventors: Stefan Schreck, Elbert Tzeng, Todd Abraham, Jonathan Phan, Joshua Benjamin, Jacqueline Macias, Kevin Chu, William L. Gould
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Publication number: 20110288469Abstract: A surgical device is provided for both ablating a channel in a patient's tissue and also delivering a therapeutic agent. The device includes an elongated multi-lumen tube, an elongated tissue ablating assembly, and a therapeutic agent delivery assembly. The therapeutic agent is capable of being delivered into the channel and/or to the surrounding tissue. The device may further include a second multi-lumen tube also capable of delivering therapeutic agents. A method is also provided for using such a surgical device to ablate a channel in a patient's tissue and also deliver a therapeutic agent to the tissue, for example, for transmyocardial revascularization or other procedures.Type: ApplicationFiled: July 29, 2011Publication date: November 24, 2011Applicant: CARDIOGENESIS CORPORATIONInventors: John McIntyre, Elbert Tzeng
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Publication number: 20110218617Abstract: Some embodiments of an endoluminal prosthesis comprise a graft having a first end and a second end, a first stent positioned at a first end of the graft, the first stent comprising a plurality of proximal apices and a plurality of distal apices, a second stent positioned axially adjacent to the first stent comprising a plurality of proximal apices positioned at a first end of the second stent. In some embodiments, the first stent can be partially covered by the graft such that the proximal apices of the first stent are not covered by the graft. The distal apices of the first stent can be positioned approximately on a first or a second plane offset from the first plane. The second stent can be positioned relative to the first stent such that the plurality of proximal apices of the second stent are spaced apart from the plurality of distal apices of the first stent. Further, one or more of the proximal apices of the second stent can be positioned approximately on a third or a fourth plane.Type: ApplicationFiled: March 2, 2011Publication date: September 8, 2011Applicant: ENDOLOGIX, INC.Inventors: Jonathon Nguyen, Jacqueline Macias, Elbert Tzeng, Stefan Schreck
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Patent number: 8012096Abstract: The present invention contemplates a surgical device for both ablating a channel in a patient's tissue and also delivering a therapeutic agent. The device includes an elongated multi-lumen tube, an elongated tissue ablating assembly, and a therapeutic agent delivery assembly. The therapeutic agent is capable of being delivered into the channel and/or to the surrounding tissue. The device may further include a second multi-lumen tube also capable of delivering therapeutic agents. Although suitable for many operations, the device is particularly well suited for transmyocardial revascularization operations. The present invention also contemplates a procedure for using such a surgical device to ablate a channel in a patient's tissue and also deliver a therapeutic agent.Type: GrantFiled: October 5, 2006Date of Patent: September 6, 2011Assignee: Cardiogenesis CorporationInventors: John McIntyre, Elbert Tzeng
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Publication number: 20080114343Abstract: Methods for the treatment of ischemic limbs. An energy source, which will typically be a laser energy source deployed through an optic fiber, is deployed subcutaneously to a site of ischemic skeletal muscle. At the site, a plurality of channels are preferably systematically formed with an appropriate amount of activated energy, which in turn can facilitate the restoration of blood flow through new blood vessel formation. Optionally, a needle or cannula can be deployed in conjunction with the energy source to help facilitate the formation of channel formation and/or deliver a therapeutic agent at the sight of channel formation. A sheath may also be utilized to house the optic fiber and deliver a therapeutic agent.Type: ApplicationFiled: November 13, 2006Publication date: May 15, 2008Inventors: James Lowe, Gary Allen, Elbert Tzeng, Richard Lanigan, John McIntyre
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Publication number: 20070088218Abstract: The present invention contemplates a surgical device for both ablating a channel in a patient's tissue and also delivering a therapeutic agent. The device includes an elongated multi-lumen tube, an elongated tissue ablating assembly, and a therapeutic agent delivery assembly. The therapeutic agent is capable of being delivered into the channel and/or to the surrounding tissue. The device may further include a second multi-lumen tube also capable of delivering therapeutic agents. Although suitable for many operations, the device is particularly well suited for transmyocardial revascularization operations. The present invention also contemplates a procedure for using such a surgical device to ablate a channel in a patient's tissue and also deliver a therapeutic agent.Type: ApplicationFiled: October 5, 2006Publication date: April 19, 2007Inventors: John McIntyre, Elbert Tzeng
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Patent number: 6716236Abstract: An intravenous catheter system (apparatus and method) for controlling patient temperature includes a generally tubular elongate body, a heat exchange element through which a heat exchange fluid circulates, and an inflation element or irregular surface positioned within the heat exchange element for promoting mixing of the circulating heat exchange fluid. The heat exchange element and inflation element preferably include inflatable balloons. The catheter preferably has two to four balloons having a substantially straight configuration, each balloon containing an inner balloon inflation element having a substantially spiral configuration. The catheter also preferably has at least one infusion lumen for providing access to the patient's blood and a guidewire lumen to accommodate a guidewire. The catheter is used in conjunction with a heat/cool system to cool a hyperthermic patient as quickly as possible, to warm a hypothermic patient as quickly as possible or to maintain normothermia.Type: GrantFiled: October 19, 2001Date of Patent: April 6, 2004Assignee: Alsius CorporationInventors: Elbert Tzeng, Peter Barker, Scott M. Evans, Wayne A. Noda
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Patent number: 6706060Abstract: A heat exchange catheter has a catheter body with a working fluid supply lumen extending therethrough, and terminating in a helical heat exchange tube that exits the body and extends proximally back along the catheter body. Working fluid flows through the heat exchange tube to exchange heat with the central venous system of a patient when the catheter body is properly placed in the patient.Type: GrantFiled: May 30, 2002Date of Patent: March 16, 2004Assignee: Alsius CorporationInventors: Elbert Tzeng, Wesley Adzich, Peter Barker, Hortensia Pompa, Scott M. Evans
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Patent number: 6589271Abstract: Catheters adapted to exchange heat with a body fluid flowing through a body conduit employ helical elongate lumens for heat transfer with the body fluid. The helical elongate lumen of a catheter forms multiple turns extending longitudinally of a portion of the catheter with the turns each being bonded to the catheter along a fraction of the length of the turn. The length of the lumen and its orientation in each turn has the lumen otherwise displaced over a major portion of its length from the elongate body. The turns of the helical lumen can be arranged in sets having different lengths to encounter all areas of the flow. One or more infusion lumens may also extend to an infusion port or ports. The helical elongate lumen is defined by an elongate, thin-walled element. This lumen is in fluid communication with a heater/chiller supplying a working fluid for heat transfer through the wall of the elongate element defining the helical elongate lumen.Type: GrantFiled: December 13, 2001Date of Patent: July 8, 2003Assignee: Alsius CorporationsInventors: Elbert Tzeng, Vaso Adzich, Hortensia Pompa, Scott M. Evans, Peter Barker, William J. Worthen, Suzanne C. Winter, David P. Balding, Kenneth A. Collins
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Publication number: 20020183816Abstract: A heat exchange catheter has a catheter body with a working fluid supply lumen extending therethrough, and terminating in a helical heat exchange tube that exits the body and extends proximally back along the catheter body. Working fluid flows through the heat exchange tube to exchange heat with the central venous system of a patient when the catheter body is properly placed in the patient.Type: ApplicationFiled: May 30, 2002Publication date: December 5, 2002Applicant: AlsiusInventors: Elbert Tzeng, Wesley Adzich (a/k/a Vaso), Peter Barker, Hortensia Pompa, Scott M. Evans