| 摘要 |
An introducer rod 1 (or stylet) for facilitating the insertion of a nasogastric tube, and of suitable stiffness to encourage passage down the posterior wall of the oropharynx and into the oesophagus (4 fig 3). The device is preferably made of plastic and thin enough to fit into the lumen of existing nasogastric tubes (3 fig 3) and long enough such that it can protrude from the nasogastric tube. Variations include a removable handle (7, fig 5) with lever system to enable up and down movement of the tip of the introducer. Use of either a light source (5, fig 4) or presence of ferromagnetic material (9 fig 6) at the tip may provide a method for confirmation of placement of the introducer and nasogastric tube. The introducer rod may further be stabalised by the use of a bung (2) at the proximal opening of the nasogastric tube. The introducer 'rod' allows passage of a nasogastric tube with higher chance of success on first attempt and reduction in the risk of trauma and complications. |
