Patent ID: 11864946
Assignee: VERAN MEDICAL TECHNOLOGIES, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 9:
10. A method of tracking and displaying a medical device during a medical procedure comprising:
providing a catheter, the catheter comprising an elongate flexible shaft having a proximal end portion and a distal end portion, the proximal end portion comprising a port that is fixed in relation to a catheter handle, the distal end portion comprising a distal exit wherein a working channel extends between the port and the distal exit, a first localization element is attached to the catheter handle;
providing a medical instrument comprising a proximal end and a distal end, the proximal end of the medical instrument comprising a medical instrument handle, and a second localization element attached to the medical instrument handle, the distal end of the medical instrument comprising a needle, and the needle having a tip,
inserting the distal end of the medical device into the port to position the distal end of the medical within the working channel wherein the needle tip is in an unextended position is adjacent the distal exit but within the working channel, and the needle tip is in an extended position when the needle tip extends through and beyond the distal exit;
actuating the medical instrument handle to extend the needle tip from the unextended position to the extended position;
providing a navigation system in communication with a display, the navigation system detecting positions of the first localization element and the second localization element and determining a distance between the first localization element and the second localization element,
wherein when the needle tip is in the unextended position, the positions of the first localization element and the second localization element are detected as a zeroed out position, when the needle tip is in the extended position, the positions of the first localization element and the second localization element are detected as an extension position, the distance between the first localization element and the second localization element is less than the distance in the zeroed out position, and a difference in the distance between the zeroed out position and the extension position is determined by the navigation system to be a needle stroke value; and
displaying the needle stroke value on the display.