Volcano Corporation

Rancho Cordova, CA, United States

Volcano Corporation

Rancho Cordova, CA, United States
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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
Volcano Corporation | Date: 2017-01-25

There is described a system for assessing the severity of a stenosis in a vessel without administration of a hyperemic agent. The system comprises a first instrument and a processing unit. The first instrument is sized and shaped for introduction into the vessel of the patient. The processing unit is in communication with the first instrument. The processing unit is configured to: obtain distal pressure measurements for a cardiac cycle of the patient from the first instrument while the first instrument is positioned within the vessel at a position distal of the stenosis; obtain proximal pressure measurements for the cardiac cycle of the patient from a second instrument while the second instrument is positioned within the vessel at a position proximal of the stenosis; select a diagnostic window within the cardiac cycle of the patient, wherein the diagnostic window encompasses only a portion of the cardiac cycle of the patient; and calculate a pressure ratio between the distal pressure measurements obtained during the diagnostic window and the proximal pressure measurements obtained during the diagnostic window to thereby assess the severity of the stenosis. Ways in which starting and ending points of the diagnostic window are selected are also described.


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.


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
Philips and Volcano Corporation | Date: 2017-05-17

Devices, systems, and methods configured to assess the severity of a blockage in a vessel and, in particular, a stenosis in a blood vessel, provide visual depictions of vessel that allow assessment of the vessel and,in particular, any stenosis or lesion of the vessel, simulate one or more treatment options for the vessel, and perform treatment on any stenosis or lesion of the vessel, including guiding placement of one or more treatment devices are provided. The method can include obtaining pressure measurements from first and second instruments positioned within a vessel of a patient during a diagnostic procedure where the second instrument is moved longitudinally through the vessel; identifying a treatment option based on the obtained pressure measurements; and performing the identified treatment option, wherein a user display guides placement of one or more treatment devices associated with the identified treatment option.


Intravascular devices, systems, and methods are disclosed. In some embodiments, an intravascular pressure measurement device is provided. The intravascular device includes a flexible elongate member with a proximal portion and a distal portion and a lumen extending therethrough. The lumen is configured to allow the passage of a guidewire. The distal portion of the member includes first and second distal sections. The second distal section having an outer diameter that is smaller than the outer diameter of the first distal section. The intravascular device further includes a first pressure sensor disposed within the wall of the first distal section of the flexible elongate member to measure the pressure within the lumen.


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 include a flow-sensing element within a distal portion of an intravascular device that is mounted at an oblique angle with respect to a central longitudinal axis of the intravascular device. The angled flow-sensing element can be oriented away from a vessel wall and towards the center of the vessel lumen through rotation of the intravascular device.


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.


A method of evaluating a vessel of a patient is provided. The method includes outputting, to a display device, a screen display including: a visualization based on pressure measurements obtained from a first instrument and a second instrument positioned within the vessel of the patient while the second instrument is moved longitudinally through the vessel and the first instrument remains stationary within the vessel; and a visual representation of a vessel; receiving a user input to modify the visualization to simulate a therapeutic procedure; and updating the screen display, in response to the user input, including modifying the visualization based on the user input.A system for evaluating a vessel of a patient is also provided. The system includes first and second instruments sized and shaped for introduction into the vessel of the patient; and a processing system communicatively coupled to the first and second instruments and a display device.

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