Volcano Corporation

Rancho Cordova, CA, United States

Volcano Corporation

Rancho Cordova, CA, United States

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Patent
Volcano Corporation | Date: 2017-03-08

Embodiments of the present disclosure are configured to assess the severity of a blockage in a vessel and, in particular, a stenosis in a blood vessel. In some particular embodiments, the devices, systems, and methods of the present disclosure are configured to assess the severity of a stenosis in the coronary arteries without the administration of a hyperemic agent. Further, in some implementations devices, systems, and methods of the present disclosure are configured to normalize and/or temporally align pressure measurements from two different pressure sensing instruments. Further still, in some instances devices, systems, and methods of the present disclosure are configured to exclude outlier cardiac cycles from calculations utilized to evaluate a vessel, including providing visual indication to a user that the cardiac cycles have been excluded.


Intravascular devices, systems, and methods are disclosed. In some embodiments, side-loading electrical connectors for use with intravascular devices are provided. The side-loading electrical connector has at least one electrical contact configured to interface with an electrical connector of the intravascular device. A first connection piece of the side-loading electrical connector is movable relative to a second connection piece between an open position and a closed position, wherein in the open position an elongated opening is formed between the first and second connection pieces to facilitate insertion of the electrical connector between the first and second connection pieces in a direction transverse to a longitudinal axis of the intravascular device and wherein in the closed position the at least one electrical contact is electrically coupled to the at least one electrical connector received between the first and second connection pieces.


Intravascular devices, systems, and methods are disclosed. In some instances, the intravascular device is a guide wire having a core wire formed of multiple materials. For example, a sensing guide wire is provided that includes a core member having an inner section and an outer section surrounding the inner section, wherein the inner section is formed of a first material and the outer section is formed of a second material that is different than the first material; and a sensing element coupled to a distal portion of the core member. Methods of making, manufacturing, and/or assembling such intravascular devices and associated systems are also provided.


Patent
Philips and Volcano Corporation | Date: 2017-05-24

The invention provides methods and devices for treating liver cirrhosis or portal hypertension by creating an intrahepatic shunt, or new passage, from a portal vein of a patient to a hepatic vein using a device with intravascular imaging capabilities and pressure sensing capabilities or positioning mechanisms. The integration of intravascular imaging aids in the precise placement of the shunt and pressure measurement may verify successful shunt creation. An apparatus may include a catheter with an extended body for insertion into a hepatic vein of a patient, an intravascular imaging device and a needle exit port on the distal portion of the extended body, and a needle disposed within a lumen in the catheter and configured to be pushed out of the exit port and extend away from a side of the extended body, in which the needle includes a pressure sensor.


Patent
Volcano Corporation | Date: 2017-02-23

The disclosed automatic calibration systems and methods provide a repeatable way to detect internal catheter reflections and to shift the internal catheter reflections to calibrate an image.


Solid-state ultrasound imaging devices, systems, and methods are provided. Some embodiments of the present disclosure are particularly directed to compact and efficient ultrasound transducer scanner formed from a substantially cylindrical semiconductor substrate. In some embodiments, an intravascular ultrasound (IVUS) device includes: an ultrasound scanner assembly disposed at a distal portion of the flexible elongate member, the ultrasound scanner assembly including a semiconductor substrate having a plurality of transistors formed thereupon. The semiconductor substrate is curved to have a substantially cylindrical form when the ultrasound scanner assembly is in a rolled form, and the plurality of transistors are arranged in a cylindrical arrangement when the ultrasound scanner assembly is in the rolled form. In one such embodiment, the device further includes a plurality of ultrasound transducers formed upon the semiconductor substrate and arranged in a cylindrical arrangement when the ultrasound scanner assembly is in the rolled form.


Patent
Volcano Corporation | Date: 2017-06-28

Embodiments of the present disclosure are configured to assess the severity of a blockage in a vessel and, in particular, a stenosis in a blood vessel. In some particular embodiments, the devices, systems, and methods of the present disclosure are configured to assess the severity of a stenosis in the coronary arteries utilizing external imaging.


The present disclosure is directed to intravascular devices, systems, and methods having a core wire with multiple flattened sections. In one aspect, a sensing guide wire (100) is provided. The guide wire includes a first flexible elongate member (102); a sensing element (108) positioned at a distal portion of the first flexible elongate member; and a second flexible elongate member (350) coupled to the first flexible elongate member such that the second flexible elongate member extends distally from the first flexible elongate member; and wherein a distal portion of the first flexible elongate member includes at least two flattened sections (304, 306), and wherein the first and second flexible elongate members are coupled along a portion of one of the at least two flattened sections. In other aspects, methods of forming a sensing guide wire are provided.


Embodiments of the present disclosure are related to intravascular imaging devices having a low reverberation housing and associated systems and methods. In some particular embodiments, the devices of the present disclosure include a transducerhousing having a trough on the backside of the ultrasound transducer to deflect ultrasound signals away from the ultrasound transducer. For example, in some implementations an intravascular imaging device is provided that includes a catheter body; a drivecable extending through a lumen of the catheter body; a housing coupled to a distal section of the drive cable; and an ultrasound transducer mounted within the housing, wherein the housing includes a trough on a backside of the ultrasound transducer, the trough shaped to deflect ultrasound signals away from the ultrasound transducer. Methods of making such devices and systems are also provided.


Embodiments of the present disclosure are configured to assess the severity of a blockage in a vessel and, in particular, a stenosis in a blood vessel.In some particular embodiments, the devices, systems, and methods of the present disclosure are configured to assess the severity of a stenosis in the coronary arteries by monitoring fluid flow.In some embodiments, the devices, systems, and methods of the present disclosure receive analog sensor data that includes fluid flow data and digitizes the analog sensor data according to a quadrature sampling rate.A weighted accumulator performs a baseband conversion on the digitized sensor data and may perform other signal processing steps.The processed data is then provided for use in any one of a number of diagnostic assessments.

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