Spatial needle guidance system and associated methods

摘要

Methods and apparatus for positioning a elongate hollow member at a desired location in a body in a medical procedure are provided. A position marker is removably disposed within a sheath. The sheath may be disposable. The sheath and enclosed position marker may be inserted into a lumen of a member to be positioned. The position in space of the position marker may be monitored by a position sensor to provide real-time information regarding a position of the member. The spatial relationship between the position marker and member may be fixed by securing the mounting member to the sheath and securing the sheath to the member.

主权项

1. A medical apparatus comprising:
a position marker mounted on a cable, which includes a first end region and a second end region, wherein the position marker is secured to the second end region of the cable; and a sheath, comprising:
a hub having a longitudinal aperture;a tip;a hollow shaft extending longitudinally from the hub to the tip, wherein the hollow shaft includes a lumen axially aligned with the aperture of the hub, the hollow shaft is dimensioned to receive the cable and the position marker, and the cable extends longitudinally in the hollow shaft from the hub to the tip with the first end region at the hub and the second end region at the tip; and a connector base, including:
a transverse wall with a first side and a second side, wherein the transverse wall is transverse to the hollow shaft, the first side and the second side are opposing sides, and the first side is coupled to the hub;a U-shaped elongate bracket having a long axis and projecting from the second side of the transverse wall, wherein the U-shaped bracket includes:
a bottom with a channel extending an entirety thereof along a first side of the bottom and in a direction of the long axis direction; andopposing bracket walls projecting from opposing ends of the first side of the bottom and along the transverse wall; andan attachment device coupled to the U-shaped elongate bracket and configured to secure the cable in the medical apparatus, wherein the position marker indicates a position of the position marker by at least one of sensing a magnetic field or emitting an electromagnetic field, and the position of the position marker indicates the position of the tip of the sheath.