Patents by Inventor Henry Nita
Henry Nita 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: 20150025543Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Generally, ultrasound catheters include an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and, in some embodiments, a guidewire tube extending through the lumen. A distal head for disrupting occlusions is coupled with the distal end of the ultrasound transmission member and is positioned adjacent the distal end of the catheter body. Some embodiments include improved features such as a bend in the catheter body for enhancing positioning and/or advancement of the catheter.Type: ApplicationFiled: August 4, 2014Publication date: January 22, 2015Inventors: Henry Nita, Jeff Sarge, Simon Nguyen
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Publication number: 20140214064Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Generally, an ultrasound catheter includes an elongate flexible catheter body with one or more lumens. An ultrasound transmission member or wire extends longitudinally through the catheter body lumen and, in many embodiments, a guide wire tube also extends through the same lumen. A distal head is fixed to or otherwise mechanically coupled with the distal end of the ultrasound transmission member or wire and is positioned adjacent the distal end of the catheter body. Although the distal end of the catheter body overlaps the distal head, the distal head is not directly affixed to the distal end of the catheter body. Thus, the distal tip may move freely, relative to the distal end of the catheter body when ultrasonic energy is applied through the ultrasound transmission member.Type: ApplicationFiled: April 3, 2014Publication date: July 31, 2014Applicant: FLOWCARDIA, INC.Inventors: Henry Nita, Jeff Sarge, Martinos Tran, Simon Nguyen
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Patent number: 8790291Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Generally, an ultrasound catheter device includes an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and a distal head coupled with the transmission member and positioned adjacent the distal end of the catheter body for disrupting occlusions. A proximal housing of the catheter device may include one or more features for dissipating heat from the ultrasound transmission wire, such as a fluid inlet aperture for passage of fluid, use of heat conductive materials in the proximal housing, surface features to increase the housing's surface area, heat conductive members disposed adjacent the transmission member and the like. Various irrigation fluids may be used, such as cooled, oxygen supersaturated or lubricious fluids.Type: GrantFiled: April 22, 2009Date of Patent: July 29, 2014Assignee: Flowcardia, Inc.Inventors: Henry Nita, Jeff Sarge, Richard Spano
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Publication number: 20140207164Abstract: In a method for re-entry from extraluminal space into the central lumen of a vessel, a guidewire is advanced into the extraluminal space of the vessel, and then a directional catheter is advanced over the guidewire through the extraluminal space. Thereafter, the guidewire is removed from the directional catheter, an ultrasound device is placed through the directional catheter, and the ultrasound device is advanced through the extraluminal space into the central lumen and then activated.Type: ApplicationFiled: March 21, 2014Publication date: July 24, 2014Applicant: FLOWCARDIA, INC.Inventor: Henry Nita
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Publication number: 20140188146Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Ultrasound catheter devices generally include an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and a distal head coupled with the transmission member and positioned adjacent the distal end of the catheter body for disrupting occlusions. Improved features of ultrasound catheters include catheter bodies and ultrasound transmission members with increasing distal flexibility, guidewire tubes allowing contact between a guidewire and an ultrasound transmission member, distal heads with improved guidewire lumens, and torquable proximal housings for enhancing disruption of blood vessel occlusions.Type: ApplicationFiled: March 7, 2014Publication date: July 3, 2014Applicant: FlowCardia, Inc.Inventors: Henry Nita, Jeff Sarge
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Publication number: 20140180304Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Ultrasound catheter devices generally include an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and a distal head coupled with the transmission member and positioned adjacent the distal end of the catheter body for disrupting occlusions. Improved features of ultrasound catheters include catheter bodies and ultrasound transmission members with increasing distal flexibility, guidewire tubes allowing contact between a guidewire and an ultrasound transmission member, distal heads with improved guidewire lumens, and torquable proximal housings for enhancing disruption of blood vessel occlusions.Type: ApplicationFiled: December 23, 2013Publication date: June 26, 2014Applicant: FlowCardia, Inc.Inventors: Henry Nita, Jeff Sarge
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Publication number: 20140155922Abstract: An ultrasound system has a catheter including an elongate flexible catheter body having at least one lumen extending longitudinally therethrough. The catheter further includes an ultrasound transmission member extending longitudinally through the lumen of the catheter body, the ultrasound transmission member having a proximal end connectable to a separate ultrasound generating device and a distal end coupled to the distal end of the catheter body. The distal end of the catheter body is deflectable. The ultrasound system also includes a sonic connector that connects the ultrasound transmission member to an ultrasound transducer. The ultrasound system also provides a method for reverse irrigation and removal of particles.Type: ApplicationFiled: February 10, 2014Publication date: June 5, 2014Applicant: Flowcardia, Inc.Inventor: Henry Nita
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Publication number: 20140148833Abstract: An ultrasound system has an ultrasound transducer having a transducer housing and a horn provided at the distal end of the transducer housing, an ultrasound transmission member, a sonic connector that is connected to the horn and the proximal end of the ultrasound transmission member, and a catheter knob having a proximal end that is coupled to the distal end of the transducer housing. The catheter knob has a proximal bore that houses the sonic connector. The system also includes a nesting piece that is retained inside the proximal bore of the catheter knob. The nesting piece can be moved from a first position where the sonic connector is received inside the nesting piece to a second position where the sonic connector is separated from the nesting piece when ultrasound energy is being propagated through the ultrasound transmission member.Type: ApplicationFiled: January 30, 2014Publication date: May 29, 2014Applicant: Flowcardia, Inc.Inventors: Henry Nita, Martinos Tran
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Patent number: 8690819Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Generally, an ultrasound catheter includes an elongate flexible catheter body with one or more lumens. An ultrasound transmission member or wire extends longitudinally through the catheter body lumen and, in many embodiments, a guide wire tube also extends through the same lumen. A distal head is fixed to or otherwise mechanically coupled with the distal end of the ultrasound transmission member or wire and is positioned adjacent the distal end of the catheter body. Although the distal end of the catheter body overlaps the distal head, the distal head is not directly affixed to the distal end of the catheter body. Thus, the distal tip may move freely, relative to the distal end of the catheter body when ultrasonic energy is applied through the ultrasound transmission member.Type: GrantFiled: November 9, 2012Date of Patent: April 8, 2014Assignee: Flowcardia, Inc.Inventors: Henry Nita, Jeff Sarge, Martinos Tran, Simon Nguyen
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Patent number: 8679049Abstract: In a method for re-entry from extraluminal space into the central lumen of a vessel, a guidewire is advanced into the extraluminal space of the vessel, and then a directional catheter is advanced over the guidewire through the extraluminal space. Thereafter, the guidewire is removed from the directional catheter, an ultrasound device is placed through the directional catheter, and the ultrasound device is advanced through the extraluminal space into the central lumen and then activated.Type: GrantFiled: July 17, 2012Date of Patent: March 25, 2014Assignee: Flowcardia, Inc.Inventor: Henry Nita
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Publication number: 20140081288Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Generally, an ultrasound catheter device includes an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and a distal head coupled with the transmission member and positioned adjacent the distal end of the catheter body for disrupting occlusions. A proximal housing of the catheter device may include one or more features for dissipating heat from the ultrasound transmission wire, such as a fluid inlet aperture for passage of fluid, use of heat conductive materials in the proximal housing, surface features to increase the housing's surface area, heat conductive members disposed adjacent the transmission member and the like. Various irrigation fluids may be used, such as cooled, oxygen supersaturated or lubricious fluids.Type: ApplicationFiled: November 26, 2013Publication date: March 20, 2014Applicant: FlowCardia, Inc.Inventors: Henry Nita, Jeff Sarge, Richard Spano
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Patent number: 8668709Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Ultrasound catheter devices generally include an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and a distal head coupled with the transmission member and positioned adjacent the distal end of the catheter body for disrupting occlusions. Improved features of ultrasound catheters include catheter bodies and ultrasound transmission members with increasing distal flexibility, guidewire tubes allowing contact between a guidewire and an ultrasound transmission member, distal heads with improved guidewire lumens, and torquable proximal housings for enhancing disruption of blood vessel occlusions.Type: GrantFiled: February 25, 2008Date of Patent: March 11, 2014Assignee: Flowcardia, Inc.Inventors: Henry Nita, Jeff Sarge
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Patent number: 8647293Abstract: An ultrasound system has a catheter including an elongate flexible catheter body having at least one lumen extending longitudinally therethrough. The catheter further includes an ultrasound transmission member extending longitudinally through the lumen of the catheter body, the ultrasound transmission member having a proximal end connectable to a separate ultrasound generating device and a distal end coupled to the distal end of the catheter body. The distal end of the catheter body is deflectable. The ultrasound system also includes a sonic connector that connects the ultrasound transmission member to an ultrasound transducer. The ultrasound system also provides a method for reverse irrigation and removal of particles.Type: GrantFiled: May 22, 2008Date of Patent: February 11, 2014Assignee: Flowcardia, Inc.Inventor: Henry Nita
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Patent number: 8641630Abstract: An ultrasound system has an ultrasound transducer having a transducer housing and a horn provided at the distal end of the transducer housing, an ultrasound transmission member, a sonic connector that is connected to the horn and the proximal end of the ultrasound transmission member, and a catheter knob having a proximal end that is coupled to the distal end of the transducer housing. The catheter knob has a proximal bore that houses the sonic connector. The system also includes a nesting piece that is retained inside the proximal bore of the catheter knob. The nesting piece can be moved from a first position where the sonic connector is received inside the nesting piece to a second position where the sonic connector is separated from the nesting piece when ultrasound energy is being propagated through the ultrasound transmission member.Type: GrantFiled: July 7, 2010Date of Patent: February 4, 2014Assignee: Flowcardia, Inc.Inventors: Henry Nita, Martinos Tran
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Publication number: 20140012261Abstract: Method and devices for cutting and removing a portion of a tissue composition which includes cancellous bone which is directly or indirectly impinging on a neural structure of the spine by creating channels through the tissue structure and then removing the detached tissue.Type: ApplicationFiled: July 9, 2012Publication date: January 9, 2014Inventors: Henry Nita, Gary Heit
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Patent number: 8617096Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Generally, an ultrasound catheter device includes an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and a distal head coupled with the transmission member and positioned adjacent the distal end of the catheter body for disrupting occlusions. A proximal housing of the catheter device may include one or more features for dissipating heat from the ultrasound transmission wire, such as a fluid inlet aperture for passage of fluid, use of heat conductive materials in the proximal housing, surface features to increase the housing's surface area, heat conductive members disposed adjacent the transmission member and the like. Various irrigation fluids may be used, such as cooled, oxygen supersaturated or lubricious fluids.Type: GrantFiled: February 1, 2011Date of Patent: December 31, 2013Assignee: Flowcardia, Inc.Inventors: Henry Nita, Jeff Sarge, Richard Spano
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Patent number: 8613751Abstract: Ultrasound catheter devices and methods provide enhanced disruption of blood vessel obstructions. Ultrasound catheter devices generally include an elongate flexible catheter body with one or more lumens, an ultrasound transmission member extending longitudinally through the catheter body lumen and a distal head coupled with the transmission member and positioned adjacent the distal end of the catheter body for disrupting occlusions. Improved features of ultrasound catheters include catheter bodies and ultrasound transmission members with increasing distal flexibility, guidewire tubes allowing contact between a guidewire and an ultrasound transmission member, distal heads with improved guidewire lumens, and torquable proximal housings for enhancing disruption of blood vessel occlusions.Type: GrantFiled: January 28, 2008Date of Patent: December 24, 2013Assignee: Flowcardia, Inc.Inventors: Henry Nita, Jeff Sarge
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Publication number: 20130296903Abstract: An ultrasound catheter has an elongate flexible catheter body having a lumen extending longitudinally therethrough, and an ultrasound transmission member extending longitudinally through the lumen of the catheter body. The ultrasound transmission member has a proximal end that is coupled to a separate ultrasound generating device, and a distal tip that is attached to the distal end of the ultrasound transmission member and which is located at the distal end of the catheter body. The ultrasound transmission member is directly attached to the catheter body and/or to a guidewire tube either directly or via an attachment device. The catheter has an additional radiopaque marker positioned on the distal end the catheter.Type: ApplicationFiled: June 17, 2013Publication date: November 7, 2013Inventor: Henry Nita
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Patent number: 8506519Abstract: An ultrasound system has a catheter including an elongate flexible catheter body having a main lumen extending longitudinally therethrough. The catheter further includes an ultrasound transmission member extending longitudinally through the main lumen of the catheter body, the ultrasound transmission member having a proximal end connectable to an ultrasound generating device and a distal end coupled to the distal end of the catheter body. The catheter further includes a bent distal head or shaped a distal end of the catheter body to improve steerability.Type: GrantFiled: July 16, 2007Date of Patent: August 13, 2013Assignee: Flowcardia, Inc.Inventor: Henry Nita
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Patent number: 8496669Abstract: An ultrasound catheter has an elongate flexible catheter body having a lumen extending longitudinally therethrough, and an ultrasound transmission member extending longitudinally through the lumen of the catheter body. The ultrasound transmission member has a proximal end that is coupled to a separate ultrasound generating device, and a distal tip that is attached to the distal end of the ultrasound transmission member and which is located at the distal end of the catheter body. The ultrasound transmission member is directly attached to the catheter body and/or to a guidewire tube either directly or via an attachment device. The catheter has an additional radiopaque marker positioned on the distal end the catheter.Type: GrantFiled: December 21, 2007Date of Patent: July 30, 2013Assignee: FlowCardia, Inc.Inventors: Henry Nita, Simon Nguyen