| 主权项 |
1. A tubing assembly comprising:
a magnetic field generator; a union device with an elongated portion defining a passage of a first length; a tubular insulator including a portion configured to be coaxially moved along the passage of the union device and coupled to the union device; a tubular connector coupled to the union device; a flexible catheter coupled to the tubular connector, the flexible catheter being configured to receive the magnetic field generator, and the flexible catheter having a length of variation from a tip of the flexible catheter to the tubular connector, the length of variation based on at least one of a manufacturing process and a material of the flexible catheter; and at least one wire coupled to the magnetic field generator, the at least one wire extending through the tubular insulator, the union device, the tubular connector, and the flexible catheter, wherein the tubular insulator, the at least one wire, and the magnetic field generator are moveably configured to adjust the at least one wire and the magnetic field generator to a position within the flexible catheter, by moving the portion of the tubular insulator coaxially along the passage of the union device and the at least one wire through the passage of the union device, to fix the magnetic field generator at the position within the flexible catheter, wherein the first length of the passage is greater than the length of variation of the flexible catheter such that the elongated portion is configured for controlling placement of the magnetic field generator at the position. |
