| 摘要 |
A tool dislodgement detection apparatus (10) includes an MPS (20) outputting position and orientation (P&O) readings for determining tool (26) motion. A control (12) generates an alarm based on the tool (26) motion and dislodgement (2) criteria. The criteria includes whether the tool (26) motion meets a condition based on the type of medical procedure or tool (26), the tool (26) parking position, a patient characteristic (e.g., age, weight, gender) or a physician preference. The criteria includes when the correlation between the tool (26) motion and the cardiac, respiration and patient motion changes abruptly. In a prolapse detection apparatus, guidewire tip P&O readings determine a tip (68) motion vector (70). The control (12) generates an alarm using the motion vector (70) and predetermined criteria. The criteria include a substantial change in the tip (68) orientation not accompanied by a corresponding position change and a change in the motion vector (70) by about 180° accompanied by a corresponding position change no greater than a threshold. |
