Impedance devices for obtaining conductance measurements within luminal organs
First Claim
1. An impedance device, comprising:
- an elongated body; and
a detector positioned upon the elongated body, the detector comprising at least five electrodes and configured to obtain one or more conductance measurements generated using a first arrangement of four of the at least five electrodes and further configured to obtain one or more fluid velocity measurements using a second arrangement of four of the at least five electrodes when the elongated body is positioned within a fluid environment of a mammalian luminal organ, wherein the first arrangement is different from the second arrangement.
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Accused Products
Abstract
Impedance devices for obtaining conductance measurements within luminal organs. In at least one embodiment of an impedance device of the present disclosure, the device, comprises an elongated body and an detector positioned upon the elongated body, the detector comprising at least five electrodes and configured to obtain one or more conductance measurements generated using a first arrangement of four of the at least five electrodes and further configured to obtain one or more fluid velocity measurements using a second arrangement of four of the at least five electrodes when the elongated body is positioned within a fluid environment of a mammalian luminal organ, wherein the first arrangement is different from the second arrangement.
64 Citations
21 Claims
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1. An impedance device, comprising:
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an elongated body; and a detector positioned upon the elongated body, the detector comprising at least five electrodes and configured to obtain one or more conductance measurements generated using a first arrangement of four of the at least five electrodes and further configured to obtain one or more fluid velocity measurements using a second arrangement of four of the at least five electrodes when the elongated body is positioned within a fluid environment of a mammalian luminal organ, wherein the first arrangement is different from the second arrangement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for using an impedance device to obtain a luminal cross-sectional area measurement and a fluid velocity measurement, comprising the steps of:
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introducing at least part of an impedance device into a luminal organ at a first location, the impedance device comprising; an elongated body, and a detector positioned upon the elongated body, the detector comprising; a most distal electrode, an electrode immediately adjacent to the most distal electrode, a most proximal electrode, an electrode immediately adjacent to the most proximal electrode, and a central electrode positioned between the electrode immediately adjacent to the most distal electrode and the electrode immediately adjacent to the most proximal electrode; applying current to the impedance device using a current source; and obtaining, in either order, (a) one or more conductance measurements by exciting the most distal electrode and the electrode immediately adjacent to the most proximal electrode to generate an electric field and detecting using the electrode immediately adjacent to the most distal electrode and the central electrode within the electric field, wherein one or more cross-sectional areas can be calculated based in part upon the one or more conductance measurements and a known distance between the electrode immediately adjacent to the most distal electrode and the central electrode, and (b) one or more fluid velocity measurements by exciting the most distal electrode and the most proximal electrode are capable of excitation to generate an electric field, wherein the most distal electrode and the electrode immediately adjacent to the most distal electrode comprise a first fluid velocity detection electrode pair, wherein the central electrode and the most proximal electrode comprise a second fluid velocity detection pair, and wherein the first fluid velocity detection electrode pair and the second fluid velocity detection electrode pair are operable obtain the one or more fluid velocity measurements by detecting an indicator positioned within the luminal organ. - View Dependent Claims (21)
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Specification