Abstract: The disclosure relates to an omni-directional horizontally oriented deflecting tool for a coiled tubing, which includes an inner central pipe, an outer central pipe, a conical outer cylinder, a piston outer cylinder, an anchoring mechanism, a sealing mechanism, a reversing mechanism and a steering mechanism. The anchoring mechanism includes a cone, an O-shaped sealing ring I, a cone spring, a slip, a slip spring, a slip seat, a claw I and a pin shaft I, and the sealing mechanism includes a piston, an O-shaped sealing ring II, a claw II, a pin shaft II, an upper rubber cylinder seat, a rubber cylinder, a connecting cylinder, a lower rubber cylinder seat and a gasket.

Abstract: Disclosed in the present invention is a pharmaceutical composition, comprising a weight ratio of 1:120 to 1:1000 of camptothecin compound of formula I and ?-cyclodextrin or derivatives thereof, and an acidic buffer to adjust the pH=3.5-6.0. The composition can be used to treat solid tumours, such as melanoma, pancreatic cancer, hepatoma etc. The pharmaceutical composition of the present invention is miscible with a water-miscible co-solvent system in any proportion, and can be used as an intravenous infusion solvent, and has no obvious hemolysis or vascular stimulation; the pharmaceutical composition has a better tumour inhibiting rate than solubilisation of surfactants.