Patents by Inventor Mark Dehdashtian
Mark Dehdashtian 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: 20140330366Abstract: A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus via a transaortic approach. The system includes a balloon catheter for delivering a balloon-expandable prosthetic heart valve through an introducer from an approach from outside the patient, through a minimally-invasive opening in the chest cavity through an incision in the aorta, and into the aorta and aortic annulus. The balloon catheter includes a flexible, tapered tip just distal of the balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. The prosthetic heart valve may be installed over the existing calcified leaflets, and a pre-dilation valvuloplasty procedure may also be utilized.Type: ApplicationFiled: March 17, 2014Publication date: November 6, 2014Applicant: Edwards Lifesciences CorporationInventors: Mark Dehdashtian, Teodoro S. Jimenez
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Publication number: 20140309728Abstract: A method of delivering a prosthetic heart valve to the aortic valve annulus while a patient's heart is beating. The method includes accessing the left ventricle through an intercostal incision and forming a puncture in the left ventricle. A guidewire is advanced into the left ventricle and through the native aortic valve. An introducer sheath is passed over the guidewire and into the left ventricle. A prosthetic heart valve is advanced over the guidewire and through the introducer sheath using a delivery catheter. After positioning the prosthetic heart valve in the native aortic valve, the prosthetic heart valve is radially expanded in the aortic valve annulus for replacing the function of the native aortic valve.Type: ApplicationFiled: June 26, 2014Publication date: October 16, 2014Applicant: EDWARDS LIFESCIENCES CORPORATIONInventors: Mark Dehdashtian, Jane M. Olin
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Patent number: 8764820Abstract: A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a balloon catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve through an introducer in an antegrade fashion to the aortic annulus. The balloon catheter passes through an introducer that accesses the left ventricle through its apex and a small incision in the chest wall. The balloon catheter includes a deflecting segment just proximal to the distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. A slider in a deflection handle may be coupled to a deflection wire that actuates the deflecting segment. The method includes using two concentric rings of purse-string sutures around the puncture in the left ventricular apex to maintain a good seal around instruments passed therethrough.Type: GrantFiled: November 16, 2005Date of Patent: July 1, 2014Assignee: Edwards Lifesciences CorporationInventors: Mark Dehdashtian, Jane M. Olin
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Publication number: 20130345798Abstract: A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a delivery catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve to the aortic annulus in an antegrade fashion through an introducer passing into the left ventricle through its apex. The introducer may have a more floppy distal section than a proximal section to reduce trauma to the heart wall while preserving good operating field stability. The delivery catheter includes a deflecting segment just proximal to a distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. A trigger in a catheter handle may be coupled to a deflection wire that actuates the deflecting segment, while a slider in the handle controls retraction of a valve pusher.Type: ApplicationFiled: June 19, 2013Publication date: December 26, 2013Applicant: Edwards Lifesciences CorporationInventors: Teodoro S. Jimenez, Walter Lee, Mark Dehdashtian, Kristopher J. Yee
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Patent number: 8475522Abstract: A delivery system for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a delivery catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve to the aortic annulus in an antegrade fashion through an introducer passing into the left ventricle through its apex. The introducer may have a more floppy distal section than a proximal section to reduce trauma to the heart wall. The delivery catheter includes a deflecting segment just proximal to a distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the annulus. A trigger in a catheter handle may be coupled to a deflection wire that actuates the deflecting segment, while a slider in the handle controls retraction of a valve pusher. A pre-dilation valvuloplasty procedure may also be utilized.Type: GrantFiled: July 13, 2010Date of Patent: July 2, 2013Assignee: Edwards Lifesciences CorporationInventors: Teodoro S. Jimenez, Walter Lee, Mark Dehdashtian, Kristopher Yee
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Patent number: 8439970Abstract: A delivery system for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a delivery catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve to the aortic annulus in an antegrade fashion through an introducer passing into the left ventricle through its apex. The introducer may have a more floppy distal section than a proximal section to reduce trauma to the heart wall. The delivery catheter includes a deflecting segment just proximal to a distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the annulus. A trigger in a catheter handle may be coupled to a deflection wire that actuates the deflecting segment, while a slider in the handle controls retraction of a valve pusher. A pre-dilation valvuloplasty procedure may also be utilized.Type: GrantFiled: July 13, 2010Date of Patent: May 14, 2013Assignee: Edwards Lifesciences CorporationInventors: Teodoro S. Jimenez, Walter Lee, Mark Dehdashtian, Kristopher Yee
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Publication number: 20130116654Abstract: An cardioplegic fluid delivery catheter includes an expandable member for occluding the ascending aorta of a patient. A length of the catheter allows the distal end to be within the ascending aorta while the proximal end extends from a peripheral artery. The delivery catheter has a multi-lumen construction with a primary lumen extending configured to allow a cardioplegic fluid to be delivered to the aorta. Secondary lumens provide for balloon inflation and aortic root pressure monitoring. The delivery catheter includes a shaft having a pre-determined curve profile at a distal end of the delivery catheter. The pre-determined curve profile generally corresponds to the curve of the bottom surface of the aortic arch. The shaft may be eccentric to the expandable member such that retraction of the shaft causes a distal tip to be parallel within the ascending aorta.Type: ApplicationFiled: November 8, 2011Publication date: May 9, 2013Applicant: Edwards Lifesciences LLCInventors: Mark Dehdashtian, Teodoro S. Jimenez, JR., RB Hayes, Amanda Larsen, Edwin Schulting, Lex Boudewijn
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Publication number: 20130030520Abstract: Described herein are systems and methods from delivering prosthetic devices, such as prosthetic heart valves, through the body and into the heart for implantation therein. The prosthetic devices delivered with the delivery systems disclosed herein are, for example, radially expandable from a radially compressed state mounted on the delivery system to a radially expanded state for implantation using an inflatable balloon of the delivery system. Exemplary delivery routes through the body and into the heart include transfemoral routes, transapical routes, and transaortic routes, among others.Type: ApplicationFiled: July 26, 2012Publication date: January 31, 2013Inventors: Walter Lee, Mark Dehdashtian, Teodoro S. Jimenez, Gilbert S. Leung, Bryan Janish, Michael G. Valdez, Tram Nguyen, Timothy C. Ulrich
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Publication number: 20110015729Abstract: A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a delivery catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve to the aortic annulus in an antegrade fashion through an introducer passing into the left ventricle through its apex. The introducer may have a more floppy distal section than a proximal section to reduce trauma to the heart wall while preserving good operating field stability. The delivery catheter includes a deflecting segment just proximal to a distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. A trigger in a catheter handle may be coupled to a deflection wire that actuates the deflecting segment, while a slider in the handle controls retraction of a valve pusher.Type: ApplicationFiled: July 13, 2010Publication date: January 20, 2011Applicant: EDWARDS LIFESCIENCES CORPORATIONInventors: Teodoro S. Jimenez, Walter Lee, Mark Dehdashtian, Kristopher Yee
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Publication number: 20110015728Abstract: A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a delivery catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve to the aortic annulus in an antegrade fashion through an introducer passing into the left ventricle through its apex. The introducer may have a more floppy distal section than a proximal section to reduce trauma to the heart wall while preserving good operating field stability. The delivery catheter includes a deflecting segment just proximal to a distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. A trigger in a catheter handle may be coupled to a deflection wire that actuates the deflecting segment, while a slider in the handle controls retraction of a valve pusher.Type: ApplicationFiled: July 13, 2010Publication date: January 20, 2011Applicant: EDWARDS LIFESCIENCES CORPORATIONInventors: Teodoro S. Jimenez, Walter Lee, Mark Dehdashtian, Kristopher Yee
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Patent number: 7311656Abstract: A transfer device usable in a system for intraluminal treatment of a selected site in a body of a patient in which the transfer device comprises an integral pump for pressurizing and circulating fluid through a fluid path defined by the transfer device and associated catheter. A removable fluid cartridge is provided including a reservoir from which fluid is drawn by the pump and into which fluid is returned after being circulated through the fluid path. The pump may be a peristaltic pump and the fluid cartridge may include an elongated fluid pick-up having an inlet through which fluid is introduced into the transfer device. The fluid pick-up is sized in length so that the inlet is always submerged in the fluid regardless of the orientation of the transfer device. A removable treatment cartridge having a lumen forming part of the fluid path may also be provided, and a storage sleeve for the treatment cartridge may be of a radiation-blocking material, such as quartz.Type: GrantFiled: October 27, 2003Date of Patent: December 25, 2007Assignee: Best Vascular, Inc.Inventors: James D. Hughett, Robert Michael Webster, Douglas Layland Armstrong, Byron Lee Boylston, Gregg T. Juett, Richard A. Hillstead, Jack C. Griffis, III, Andrew L. Lerohl, Mark Dehdashtian, Marvin A. Guiles
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Publication number: 20070112422Abstract: A delivery system and method for delivering a prosthetic heart valve to the aortic valve annulus. The system includes a balloon catheter having a steering mechanism thereon for delivering a balloon-expandable prosthetic heart valve through an introducer in an antegrade fashion to the aortic annulus. The balloon catheter passes through an introducer that accesses the left ventricle through its apex and a small incision in the chest wall. The balloon catheter includes a deflecting segment just proximal to the distal balloon to facilitate positioning of the prosthetic heart valve in the proper orientation within the aortic annulus. A slider in a deflection handle may be coupled to a deflection wire that actuates the deflecting segment. The method includes using two concentric rings of purse-string sutures around the puncture in the left ventricular apex to maintain a good seal around instruments passed therethrough.Type: ApplicationFiled: November 16, 2005Publication date: May 17, 2007Inventor: Mark Dehdashtian
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Publication number: 20060224228Abstract: Methods and apparatus for placing a bifurcated aortic graft, with extensions, into a body lumen. An aortic graft is provided with a unique combination of self-expanding a balloon expandable wires. The aortic graft is bifurcated and includes ipsilateral and contralateral legs. Two extension grafts are provided for frictional engagement with the legs of the aortic graft. For placement of the bifurcated aortic graft with extensions, an introducer assembly including a dilator and a sheath assembly provides access for the introduction of a main catheter and a directional catheter. The main catheter is provided for deployment of the bifurcated aortic graft within the lumen of a vessel. A balloon is provided on the main catheter for expanding the balloon-expandable wires of the aortic graft. The directional catheter, which includes a deflecting spring portion, permits placement of a guidewire through the ipsilateral leg and into the contralateral leg of the aortic graft.Type: ApplicationFiled: June 6, 2006Publication date: October 5, 2006Inventors: Mark Dehdashtian, Geoffrey White, Weiyun Yu
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Patent number: 7066873Abstract: A transfer device usable in a system for intraluminal treatment of a selected site in a body of a patient in which the transfer device comprises an integral pump for pressurizing and circulating fluid through a fluid path defined by the transfer device and associated catheter. A removable fluid cartridge is provided including a reservoir from which fluid is drawn by the pump and into which fluid is returned after being circulated through the fluid path. The pump may be a peristaltic pump and the fluid cartridge may include an elongated fluid pick-up having an inlet through which fluid is introduced into the transfer device. The fluid pick-up is sized in length so that the inlet is always submerged in the fluid regardless of the orientation of the transfer device. A removable treatment cartridge having a lumen forming part of the fluid path may also be provided, and a storage sleeve for the treatment cartridge may be of a radiation-blocking material, such as quartz.Type: GrantFiled: October 27, 2003Date of Patent: June 27, 2006Assignee: Best Vascular, Inc.Inventors: James D. Hughett, Robert Michael Webster, Douglas Layland Armstrong, Byron Lee Boylston, Gregg T. Juett, Richard A. Hillstead, Jack C. Griffis, III, Andrew L. Lerohl, Mark Dehdashtian, Marvin A. Guiles
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Patent number: 6849088Abstract: A generally tubular intraluminal vascular graft having a linear shape that may be radially expanded from a compressed state to an expanded state within a body vessel is disclosed. The graft includes a plurality of stent portions which take the form of undulating filaments extending circumferentially along the tubular body and forming a generally ring-shaped configuration. The graft may further be equipped with a plurality of specifically-configured engagement members disposed on the outer surface of the graft which are configured to frictionally engage an inner wall of a vessel so as to inhibit longitudinal movement of the tubular body without piercing the vessel wall.Type: GrantFiled: November 7, 2001Date of Patent: February 1, 2005Assignee: Edwards Lifesciences CorporationInventors: Mark Dehdashtian, Teodoro S. Jimenez, Jr.
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Publication number: 20040092787Abstract: A transfer device usable in a system for intraluminal treatment of a selected site in a body of a patient in which the transfer device comprises an integral pump for pressurizing and circulating fluid through a fluid path defined by the transfer device and associated catheter. A removable fluid cartridge is provided including a reservoir from which fluid is drawn by the pump and into which fluid is returned after being circulated through the fluid path. The pump may be a peristaltic pump and the fluid cartridge may include an elongated fluid pick-up having an inlet through which fluid is introduced into the transfer device. The fluid pick-up is sized in length so that the inlet is always submerged in the fluid regardless of the orientation of the transfer device. A removable treatment cartridge having a lumen forming part of the fluid path may also be provided, and a storage sleeve for the treatment cartridge may be of a radiation-blocking material, such as quartz.Type: ApplicationFiled: October 27, 2003Publication date: May 13, 2004Applicant: Novoste CorporationInventors: James D. Hughett, Robert Michael Webster, Douglas Layland Armstrong, Byron Lee Boylston, Gregg T. Juett, Richard A. Hillstead, Jack C. Griffis, Andrew L. Lerchl, Mark Dehdashtian, Marvin A. Guiles
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Patent number: 6702255Abstract: A hemostasis valve for sealing around elongate medical instruments inserted into the body. The valve has an elastomeric valve body adapted to be received with a rigid introducer housing and seal thereagainst. The valve body has a distal end and a proximal end, and a cavity opening at the proximal end to receive the medical instruments. A pair of duckbill walls extends in the distal direction and converges and meets at a slit opening. The slit opening has an H-shape that effectively seals around multiple sizes of medical instruments, from the smallest catheter to the largest bore catheters. The duckbill walls may be planar or curvilinear, and may be reinforced with one or more ribs extending outward therefrom.Type: GrantFiled: November 8, 2001Date of Patent: March 9, 2004Assignee: Edwards Lifesciences CorporationInventor: Mark Dehdashtian
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Patent number: 6663667Abstract: A woven vascular graft having a texturized outer surface to promote tissue ingrowth into the graft. The outer surface of the graft is equipped with a plurality of threads that are woven into, and extend from, the outer surface. The threads may be arranged in rows, lines or a geometric pattern. Alternatively, the threads may be towel-like. Such towel-like threads may be arranged in the form of a cuff at each end of the graft, or may cover larger portions of the exterior of the graft. The graft may be equipped with only one texture, or with a plurality of different textures.Type: GrantFiled: October 31, 2001Date of Patent: December 16, 2003Assignee: Edwards Lifesciences CorporationInventors: Mark Dehdashtian, Jens Allenberg
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Patent number: 6659934Abstract: A transfer device usable in a system for intraluminal treatment of a selected site in a body of a patient in which the transfer device comprises an integral pump for pressurizing and circulating fluid through a fluid path defined by the transfer device and associated catheter. A removable fluid cartridge is provided including a reservoir from which fluid is drawn by the pump and into which fluid is returned after being circulated through the fluid path. The pump may be a peristaltic pump and the fluid cartridge may include an elongated fluid pick-up having an inlet through which fluid is introduced into the transfer device. The fluid pick-up is sized in length so that the inlet is always submerged in the fluid regardless of the orientation of the transfer device.Type: GrantFiled: December 22, 1999Date of Patent: December 9, 2003Assignee: Novoste CorporationInventors: James D. Hughett, Robert Michael Webster, Douglas Layland Armstrong, Byron Lee Boylston, Gregg T. Juett, Richard A. Hillstead, Jack C. Griffis, III, Andrew L. Lerohl, Mark Dehdashtian, Marvin A. Guiles
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Publication number: 20030153969Abstract: Methods and apparatus for placing a bifurcated aortic graft, with extensions, into a body lumen. An aortic graft is provided with a unique combination of self-expanding a balloon expandable wires. The aortic graft is bifurcated and includes ipsilateral and contralateral legs. Two extension grafts are provided for frictional engagement with the legs of the aortic graft. For placement of the bifurcated aortic graft with extensions, an introducer assembly including a dilator and a sheath assembly provides access for the introduction of a main catheter and a directional catheter. The main catheter is provided for deployment of the bifurcated aortic graft within the lumen of a vessel. A balloon is provided on the main catheter for expanding the balloon-expandable wires of the aortic graft. The directional catheter, which includes a deflecting spring portion, permits placement of a guidewire through the ipsilateral leg and into the contralateral leg of the aortic graft.Type: ApplicationFiled: March 7, 2003Publication date: August 14, 2003Inventors: Mark Dehdashtian, Geoffrey H. White, Weiyun Yu