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).
-
Publication number: 20160367284Abstract: 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: September 2, 2016Publication date: December 22, 2016Inventors: Henry Nita, Martinos Tran
-
Publication number: 20160338722Abstract: 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: August 4, 2016Publication date: November 24, 2016Inventors: Henry Nita, Jeff Sarge
-
Publication number: 20160331567Abstract: 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: July 29, 2016Publication date: November 17, 2016Inventor: Henry Nita
-
Patent number: 9433433Abstract: 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: January 30, 2014Date of Patent: September 6, 2016Assignee: Flowcardia, Inc.Inventors: Henry Nita, Martinos Tran
-
Publication number: 20160242797Abstract: 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 14, 2016Publication date: August 25, 2016Inventors: Henry Nita, Jeff Sarge, Martinos Tran, Simon Nguyen
-
Patent number: 9421024Abstract: 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: March 7, 2014Date of Patent: August 23, 2016Assignee: Flowcardia, Inc.Inventors: Henry Nita, Jeff Sarge
-
Patent number: 9402646Abstract: 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: March 21, 2014Date of Patent: August 2, 2016Assignee: FLOWCARDIA, INC.Inventor: Henry Nita
-
Patent number: 9381027Abstract: 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: December 23, 2013Date of Patent: July 5, 2016Inventors: Henry Nita, Jeff Sarge
-
Publication number: 20160183956Abstract: An ultrasound system has a catheter including an elongate flexible catheter body having at least one lumen extending longitudinally therethrough. An ultrasound transmission wire extends longitudinally through the lumen of the catheter body, and has a proximal region, a distal region, and an intermediate region between the proximal region and the distal region. A sonic connector is connected to the proximal region of the ultrasound transmission wire, and a distal head is positioned at the distal end of the catheter body and coupled to the distal region of the ultrasound transmission wire. The proximal region of the ultrasound transmission wire has a larger diameter than the intermediate region, the intermediate region is continuously tapered with a progressively decreasing diameter from its proximal end to its distal end, and the distal region has a greater diameter than the distal end of the intermediate region.Type: ApplicationFiled: March 9, 2016Publication date: June 30, 2016Inventor: Henry Nita
-
Publication number: 20160166265Abstract: Methods and devices to remove thromboembolic material from the human body using rotational energy and aspiration are disclosed. A thromboembolic removal system includes an extraction device and drive unit. The extraction device is introduced to the treatment area and activated by the drive unit to separate, break apart, loosen or soften thromboembolic material and to facilitate its aspiration outside the patient.Type: ApplicationFiled: March 25, 2015Publication date: June 16, 2016Applicant: PENUMBRA INC.Inventor: Henry Nita
-
Publication number: 20160166266Abstract: Methods and devices to remove thromboembolic material from the human body using rotational energy and aspiration are disclosed. A thromboembolic removal system includes an extraction device and drive unit. The extraction device is introduced to the treatment area and activated by the drive unit to separate, break apart, loosen or soften thromboembolic material and to facilitate its aspiration outside the patient.Type: ApplicationFiled: April 9, 2015Publication date: June 16, 2016Applicant: PENUMBRA INC.Inventor: Henry Nita
-
Publication number: 20160128717Abstract: 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 and 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: January 19, 2016Publication date: May 12, 2016Inventor: Henry Nita
-
Publication number: 20160107002Abstract: A method for delivering ultrasound energy to a patient's intracranial space includes the steps of forming a hole in a patient's skull, locating an ultrasound transmitter near or into the hole, and transmitting ultrasound from the transmitter into the intracranial space, wherein the Mechanical Index of ultrasound energy traveling through cerebral tissue in the intracranial space is less than 1.0, the power intensity delivered to a target tissue in the intracranial space is greater than 50 mW/cm2 and less than 200 mW/cm2, and the frequency of the transmitted ultrasound is within the range between 500 kHz and 2 MHz.Type: ApplicationFiled: December 21, 2015Publication date: April 21, 2016Inventor: Henry Nita
-
Patent number: 9314258Abstract: 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: April 3, 2014Date of Patent: April 19, 2016Assignee: FLOWCARDIA, INC.Inventors: Henry Nita, Jeff Sarge, Martinos Tran, Simon Nguyen
-
Patent number: 9282984Abstract: An ultrasound system has a catheter including an elongate flexible catheter body having at least one lumen extending longitudinally therethrough. An ultrasound transmission wire extends longitudinally through the lumen of the catheter body, and has a proximal region, a distal region, and an intermediate region between the proximal region and the distal region. A sonic connector is connected to the proximal region of the ultrasound transmission wire, and a distal head is positioned at the distal end of the catheter body and coupled to the distal region of the ultrasound transmission wire. The proximal region of the ultrasound transmission wire has a larger diameter than the intermediate region, the intermediate region is continuously tapered with a progressively decreasing diameter from its proximal end to its distal end, and the distal region has a greater diameter than the distal end of the intermediate region.Type: GrantFiled: April 5, 2006Date of Patent: March 15, 2016Assignee: Flowcardia, Inc.Inventor: Henry Nita
-
Patent number: 9265520Abstract: 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: February 10, 2014Date of Patent: February 23, 2016Assignee: Flowcardia, Inc.Inventor: Henry Nita
-
Publication number: 20150150571Abstract: Ultrasound catheter devices and methods of the present invention generally provide for ablation and/or disruption of vascular occlusions. An ultrasound transmission member, such as a wire, transmits vibrational energy from an ultrasound transducer to a distal head of the catheter to disrupt vascular occlusions. An absorber member is disposed on or around the ultrasound transmission wire at a location adjacent the sonic connector of the catheter. The absorber member absorbs heat, vibrations, and/or the like from the ultrasound transmission wire at or near the area where the transmission wire is coupled with the sonic connector. The absorptive function typically slows the process of wear and tear on the transmission wire, thus extending the useful life of the ultrasound catheter.Type: ApplicationFiled: February 6, 2015Publication date: June 4, 2015Inventors: Henry Nita, Jeff Sarge, Simon Nguyen
-
Patent number: 8961423Abstract: Ultrasound catheter devices and methods of the present invention generally provide for ablation and/or disruption of vascular occlusions. An ultrasound transmission member, such as a wire, transmits vibrational energy from an ultrasound transducer to a distal head of the catheter to disrupt vascular occlusions. An absorber member is disposed on or around the ultrasound transmission wire at a location adjacent the sonic connector of the catheter. The absorber member absorbs heat, vibrations, and/or the like from the ultrasound transmission wire at or near the area where the transmission wire is coupled with the sonic connector. The absorptive function typically slows the process of wear and tear on the transmission wire, thus extending the useful life of the ultrasound catheter.Type: GrantFiled: October 1, 2009Date of Patent: February 24, 2015Assignee: Flowcardia, Inc.Inventors: Henry Nita, Jeff Sarge, Simon Nguyen
-
Patent number: 8956375Abstract: 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 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 prevention of independent rotation of the ultrasound transmission member, a safety anchor for the distal head, a one-piece transmission member/distal head and the like.Type: GrantFiled: September 23, 2011Date of Patent: February 17, 2015Assignee: Flowcardia, Inc.Inventors: Henry Nita, Jeff Sarge, Simon Nguyen, Richard Spano
-
Publication number: 20150025544Abstract: 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