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US 10,329,145 B2Granted
Capacitive intravascular pressure-sensing devices and associated systems and methods
AssigneeVolcano Corporation
InventorBret C. Millett
Life of this patent
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Abstract
Intravascular devices, systems, and methods are disclosed. In some embodiments, the intravascular devices are guide wires that include a capacitive pressure-sensing component disposed at a distal portion of the guide wire. Methods of making such intravascular devices, including various manufacturing and assembling techniques, are disclosed. Systems associated with such intravascular devices and methods of using such devices and systems are also disclosed.
Claims13
An intravascular pressure-sensing apparatus, comprising:
- a first elongate flexible element comprising a proximal portion and a distal portion, the first elongate flexible element being formed of a conductive material;
- a cylindrically-shaped housing at a distal portion of the first elongate flexible element, the housing comprising:
- a capacitive pressure sensing structure comprising a flexible membrane positioned around at least a portion of a cavity and a conductive member positioned around at least a portion of the flexible membrane such that the conductive member is displaced by changes in ambient pressure relative to a pressure in the cavity;
- and
- an application-specific integrated circuit (ASIC) in electrical communication with the conductive member of the capacitive pressure sensing component and the first elongate flexible element.
2 more elements
An intravascular pressure-sensing system, the system comprising:
- a pressure-sensing apparatus, comprising:
- an elongate flexible element comprising a proximal portion and a distal portion, the elongate flexible element being formed of a conductive material;
- a cylindrically-shaped housing at a distal portion of the elongate flexible element, the housing comprising:
- a capacitive pressure sensing structure comprising a flexible membrane positioned around at least a portion of a cavity and a conductive member positioned around at least a portion of the flexible membrane such that the conductive member is displaced by changes in ambient pressure relative to a pressure in the cavity;
- and
- an application-specific integrated circuit (ASIC) in electrical communication with the conductive member of the capacitive pressure sensing component and the elongate flexible element;
- a processing system configured to process data obtained by the pressure-sensing apparatus;
- and
- an interface configured to communicatively couple the pressure-sensing apparatus to the processing system.
6 more elements
Dependencies are inferred from the claim text.