Systems and methods for positioning a catheter

摘要

A method for displaying a position of a medical device, such as a catheter, during insertion thereof into a patient. In one example embodiment, the method includes obtaining a first set of detected position data relating to a location marker, such as a permanent magnet, then determining a possible first position thereof. A first confidence level relating to a match between the first set of detected position data and a first set of predicted position data is assigned. A determination is made whether the first confidence level meets or exceeds a first threshold. If the first confidence level meets or exceeds the first threshold, a determination is then made whether the first position of the location marker is within a first detection zone. If the first position of the location marker is within the first detection zone, the first position of the location marker is displayed.

主权项

1. A method of depicting a position of a medical device that is within a patient, the method comprising:
providing the medical device including a permanent magnet; inserting the medical device into a blood vessel; positioning a detector having a first detection zone and a second detection zone such that at least the first detection zone includes a portion of the blood vessel into which the medical device is inserted; obtaining, via the detector, first measurements of a magnetic field produced by the permanent magnet; determining a first confidence level regarding a first position of the permanent magnet based on the first measurements; displaying an initial representative image of the permanent magnet if the first position is within the first detection zone and the confidence level is above a first threshold value; obtaining, via the detector, second measurements of the magnetic field produced by the permanent magnet; determining a second confidence level regarding a second position of the permanent magnet based on the second measurements; and displaying a subsequent representative image of the permanent magnet if the second position is within one or more of the first and second detection zones and the confidence level is above a second threshold value different than the first threshold value.