Left atrial access apparatus and methods
First Claim
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1. An apparatus for detecting a physiological parameter, comprising:
- a probe configured to pierce a tissue region of interest;
a sensor disposed near or at the distal end of the probe, the sensor being adapted to detect the physiological parameter; and
a guidewire connected to the probe and adapted to advance the sensor towards the tissue region of interest.
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Abstract
Left atrial access apparatus and methods are described herein. Different parameters, such as oxygen saturation difference, between the left and right atrial chambers is utilized to guide a needle or catheter into a desired position within the heart. Various sensing elements can be utilized to detect the physiological parameter difference, such as oxygen levels, in the left atrium. The sensor can be carried by the needle, at its tip or along its body, and can measure the physiological parameter levels contained in the blood, fluid, or tissue.
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Citations
26 Claims
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1. An apparatus for detecting a physiological parameter, comprising:
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a probe configured to pierce a tissue region of interest;
a sensor disposed near or at the distal end of the probe, the sensor being adapted to detect the physiological parameter; and
a guidewire connected to the probe and adapted to advance the sensor towards the tissue region of interest. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of locating a tissue region of interest for passage of an apparatus therethrough, comprising:
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probing an area of tissue with a probe;
sensing a physiological parameter of the tissue while probing the area; and
piercing the tissue at least partially with the probe upon detecting a change in the sensed physiological parameter. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification