Devices for fixing a sensor in a lumen
First Claim
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1. An apparatus for positioning within a body lumen having a wall, the apparatus comprising:
- a fixation element configured to attach to the lumen wall;
a first sensor adapted to measure blood pressure within the body lumen;
a first elongated connecting element connecting the first sensor to the fixation element, such that, when the fixation element is attached to the lumen wall, the first connecting elements extends from the fixation element at least partially into the lumen so that at least a portion of the first sensor is suspended inwadly away from and located radially inward from the lumen wall such that blood within the body lumen flows between the lumen wall and the first sensor;
a second sensor; and
a second elongated connecting element connecting the second sensor to the fixation element, such that, when the fixation element is disposed within the lumen, the second connecting element extends from the fixation element along a longitudinal axis of the second connecting element at least partially into the lumen so that the second sensor is located radially inward from the lumen wall.
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Abstract
Apparatus for positioning at least one sensor in a body lumen, the apparatus including a fixation element, a sensor, and a connecting element that connects the sensor to the fixation element, the connecting element extending at least partially into the lumen so that the sensor is located radially inward from a wall of the lumen.
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Citations
29 Claims
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1. An apparatus for positioning within a body lumen having a wall, the apparatus comprising:
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a fixation element configured to attach to the lumen wall; a first sensor adapted to measure blood pressure within the body lumen; a first elongated connecting element connecting the first sensor to the fixation element, such that, when the fixation element is attached to the lumen wall, the first connecting elements extends from the fixation element at least partially into the lumen so that at least a portion of the first sensor is suspended inwadly away from and located radially inward from the lumen wall such that blood within the body lumen flows between the lumen wall and the first sensor; a second sensor; and a second elongated connecting element connecting the second sensor to the fixation element, such that, when the fixation element is disposed within the lumen, the second connecting element extends from the fixation element along a longitudinal axis of the second connecting element at least partially into the lumen so that the second sensor is located radially inward from the lumen wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for positioning within a blood vessel having a vessel wall, comprising:
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an expandable, stent-like fixation element configured to radially expand from a collapsed position to an expanded position within the blood vessel, the fixation element adapted to assert a radial force against and contact the vessel wall in the expanded position; a sensor; and a plurality of elongated connecting elements connecting the sensor to the fixation element so that the sensor is suspended inwardly away from the vessel wall and positioned at a location between the vessel wall and a center of the blood vessel when the fixation element contacts the vessel wall to allow blood within the blood vessel to flow between the vessel wall and the sensor. - View Dependent Claims (20, 21, 22, 23)
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24. An apparatus for measuring blood pressure within a blood vessel having a vessel wall, the apparatus comprising:
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an expandable, generally cylindrical fixation element configured to radially expand from a collapsed position, capable of delivery and navigation through the blood vessel, to an expanded position within the blood vessel, the fixation element adapted to contact the vessel wall in the expanded position; a pressure sensor adapted to measure blood pressure within the blood vessel; and a first connecting element coupling the sensor to the fixation element, such that, when the fixation element contacts the vessel wall in the expanded position, the first contacting element extends from the fixation element at least partially into the blood vessel so that the sensor is suspended inwardly away from the vessel wall and is located between the vessel wall and a center of the blood vessel to allow blood within the blood vessel to flow between the vessel wall and the sensor. - View Dependent Claims (25, 26, 27, 28, 29)
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Specification