Abstract: A drug conjugate includes a structure shown by the following formula: Z-(linker-[R]m)n. In the formula, Z is a drug compound, R is a sugar, and m and n are independently an integer from 1 to 6. The drug compound Z is a hepatitis virus targeting drug, a hepatitis B virus (HBV) drug, an inhibitor of apoptosis protein (IAP) antagonist, a multidrug resistance (MDR) inhibitor, or analogues, precursors, prodrugs, derivatives thereof.

Abstract: A connector apparatus for conversion between a long handle and a short handle. The connector apparatus includes a tubular body and a connector. The tubular body is formed with an internal shaft hole and at least two projecting walls formed on inner face of the tubular body at equal intervals. Each two adjacent projecting walls define therebetween a passage. The connector has a head section and a stem downward extending from the head section. At least two ribs are annularly disposed on the stem at equal intervals. The top end of each rib has a shoulder face. When assembled, the stem of the connector is fitted into the shaft hole of the tubular body. The ribs are passed through the passages to lower sides of the projecting walls. Then the connector is turned to angularly displace the ribs and make the shoulder faces of the ribs engaged with the bottom faces of the projecting walls. The head section of the connector abuts against top end of the tubular body.