| abstract |
Systems, methods, and devices are described that include a catheter adapter subassembly (112, 12, 212, 312, 512, 612, 712) that includes magnetic features. The system includes such catheter adapter subassembly (112, 12, 212, 312, 512, 612, 712) including magnetic features, and a needle subassembly (114, 14, 214, 314, 514, 614) A magnetometer may be used to determine the relative movement of the catheter adapter subassembly (112, 12, 212, 312, 512, 612, 712) and the needle subassembly (114, 14, 214, 314, 514, 614) . |