  The expression of the quantum Ruijsenaars-Schneider Hamiltonian is obtained
in the framework of the dynamical $R$-matrix formalism. This generalizes to the
case of $U_q(sl_n)$ the result obtained by O. Babelon, D. Bernard and E. Billey
for $U_q(sl_2)$ which is the higher difference Lame operator. The general
method involved is the universal $R$-matrix construction.
