A laser therapy assembly (1) for the revascularization of muscular tissues (t), especially cardiac muscular tissue, with a laser source (2) and an optical coupling unit (9, 11) for transmitting the laser beam (L) into the muscular tissue, with an ultrasound generator (6) connected to the optical coupling unit for a transfer of heat to the muscular tissue, which can be regulated independently from the laser beam with the purpose of producing a thermal effect that can be separately adjusted, especially a marginal thermal necrosis, in a channel generated in the muscular tissue.