| abstract |
Methods and devices for detecting positioning of a probe in a tissue of a patient. A method can include providing a detection device; advancing a device coupled probe through the tissue of the patient and toward the patient's spinal canal; detecting a change in pressure about the distal portion of the coupled probe during advancing, where the detected pressure change indicates probe positioning in the patient's spinal canal; outputting the detected pressure change or indication of probe positioning to a visual display. |