Patent Application Titled "Intravascular Devices Having Information Stored Thereon And/Or Wireless Communication Functionality, Including Associated Devices, Systems, and Methods" Published Online
The assignee for this patent application is
Reporters obtained the following quote from the background information supplied by the inventors: "Heart disease is very serious and often requires emergency operations to save lives. A main cause of heart disease is the accumulation of plaque inside the blood vessels, which eventually occludes the blood vessels. Common treatment options available to open up the occluded vessel include balloon angioplasty, rotational atherectomy, and intravascular stents. Traditionally, surgeons have relied on X-ray fluoroscopic images that are planar images showing the external shape of the silhouette of the lumen of blood vessels to guide treatment. Unfortunately, with X-ray fluoroscopic images, there is a great deal of uncertainty about the exact extent and orientation of the stenosis responsible for the occlusion, making it difficult to find the exact location of the stenosis. In addition, though it is known that restenosis can occur at the same place, it is difficult to check the condition inside the vessels after surgery with X-ray.
"A currently accepted technique for assessing the severity of a stenosis in a blood vessel, including ischemia causing lesions, is fractional flow reserve (FFR). FFR is a calculation of the ratio of a distal pressure measurement (taken on the distal side of the stenosis) relative to a proximal pressure measurement (taken on the proximal side of the stenosis). FFR provides an index of stenosis severity that allows determination as to whether the blockage limits blood flow within the vessel to an extent that treatment is required. The normal value of FFR in a healthy vessel is 1.00, while values less than about 0.80 are generally deemed significant and require treatment.
"Often intravascular catheters and guide-wires are utilized to measure the pressure within the blood vessel, visualize the inner lumen of the blood vessel, and/or otherwise obtain data related to the blood vessel. To date, guide-wires containing pressure sensors, imaging elements, and/or other electronic, optical, or electro-optical components have suffered from reduced performance characteristics compared to standard guide-wires that do not contain such components. For example, the handling performance of previous guide-wires containing electronic components have been hampered, in some instances, by the need to physically couple the proximal end of the device to a communication line in order to obtain data from the guide-wire, the limited space available for the core wire after accounting for the space needed for the conductors or communication lines of the electronic component(s), the stiffness and size of the rigid housing containing the electronic component(s), and/or other limitations associated with providing the functionality of the electronic components in the limited space available within a guide-wire.
"Accordingly, there remains a need for improved intravascular devices, systems, and methods that include one or more electronic, optical, or electro-optical sensing components along with memory for storing information about the guide-wire and/or one or more components that facilitate wireless communication between the guide-wire and another device."
In addition to obtaining background information on this patent application, NewsRx editors also obtained the inventors' summary information for this patent application: "Embodiments of the present disclosure are directed to intravascular devices, systems, and methods.
"In one embodiment, a guide-wire is provided. The guide-wire comprises an elongate flexible element having a proximal portion and a distal portion, the elongate flexible element having an outer diameter of 0.018'' or less; a pressure sensing component coupled to the distal portion of the elongate flexible element; a passive radio frequency device coupled to the elongate flexible element, the passive radio frequency device being in electrical communication with the pressure sensing component such that the pressure sensing component is activated via the passive radio frequency device and specific usage data generated by the pressure sensing component is stored in the memory module of the sensor control module. In some instances, the memory module stores information about the pressure sensing component. The information about the pressure sensing component may include calibration information about the pressure sensing component and/or identification information about the pressure sensing component. In some instances, the pressure sensing component and the passive radio frequency device are positioned within the elongate flexible element.
"In another embodiment, an intravascular pressure-sensing system is provided. The system comprises a pressure-sensing guide-wire having features similar to those described above; a processing system configured to process the data obtained by the activated pressure sensing component of the pressure-sensing guide-wire; and a wireless interface configured to communicatively couple the pressure-sensing guide-wire to the processing system such that the data obtained by the pressure sensing component and stored on the passive
"In another embodiment, a method of performing of obtaining pressure measurements is provided. The method includes wirelessly energizing a pressure sensing component of a pressure-sensing guide-wire having an outer diameter of 0.018'' or less, the pressure sensing component being coupled to the distal portion of the pressure-sensing guide-wire; and processing data obtained by the energized pressure sensing component. In some instances, the step of wirelessly energizing the pressure sensing component includes energizing a sensor control module electrically coupled to the pressure sensing component. In some implementations, the method includes: storing the data obtained by the energized pressure sensing component in the memory module; and retrieving the stored data from the memory module of the sensor control unit using a reader interface.
"Additional aspects, features, and advantages of the present disclosure will become apparent from the following detailed description.
BRIEF DESCRIPTION OF THE DRAWINGS
"Illustrative embodiments of the present disclosure will be described with reference to the accompanying drawings, of which:
"FIG. 1 is a diagrammatic, schematic side view of an intravascular device according to an embodiment of the present disclosure.
"FIG. 2 is diagrammatic cross-sectional side view of an intravascular device according to an embodiment of the present disclosure.
"FIG. 3 is a diagrammatic, schematic view of an intravascular system according to an embodiment of the present disclosure.
"FIG. 4 is a diagrammatic, schematic view of an intravascular system similar to that of FIG. 3, but illustrating an alternative embodiment of the present disclosure.
"FIG. 5 is a diagrammatic, schematic view of an intravascular system similar to those of FIGS. 3 and 4, but illustrating an alternative embodiment of the present disclosure.
"FIG. 6 is a diagrammatic, schematic view of a plurality of different mounting options for components of the intravascular devices of the present disclosure.
"FIG. 7 is a diagrammatic, schematic view of an intravascular system similar to those of FIGS. 3-5, but illustrating an alternative embodiment of the present disclosure.
"FIG. 8 is a diagrammatic, side view of an intravascular device according to another embodiment of the present disclosure.
"FIG. 9 is a diagrammatic, top view of a component of the distal portion of the intravascular device of FIG. 8.
"FIG. 10 is a diagrammatic, side view a distal portion of the intravascular device shown in FIG. 8 being coupled to a plurality of different intravascular devices in accordance with the present disclosure.
"FIG. 11 is a diagrammatic, schematic view of an intravascular device positioned within the body of a patient in communication with a hemostat system according to an embodiment of the present disclosure.
"FIG. 12 is a flow chart illustrating a method of performing an intravascular procedure according to an embodiment of the present disclosure."
For more information, see this patent application: Millett,
Keywords for this news article include: Stenosis, Angiology, Intravascular,
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