| 摘要 |
1. Echotomographic apparatus usable for examination of external organs, and notably the breasts, said apparatus comprising, on a stand (10) a container (30) provided with an opening intended to contain a liquid capable of enhancing transmission of ultrasonic emission and in which the organ to be examined is immersible, an ultrasonic emitter-receiver (32) generating an examination beam in the form of a flat fan which propagates into said container, said emitter-receptor being displaced relative to the organ to be examined by means of a mechanism (14) having a first circular rolling path enabling the emitter-receptor to turn relative to the stand about the axis of symmetry of the first rolling path, and a mechanism (44, 48, 64, 68, 76) permitting the emitter-receptor to displace angularly with respect to the plane of the opening, characterised by the fact that : firstly, the container is a bowl (20) comprising a rigid circular peripheral rim (22) and a body (30) formed of a flexible membrane, said rim (22) comprising a peripheral lip (24) which forms an overflow for the liquid in the container, a second circular rolling path (26) being disposed under said lip and supporting the bowl, the membrane comprising the body (30) being fixed sealingly at its periphery to the rim (22) and by its central zone to the emitter-receiver (38) such that the window for the beam from the emitter-receiver (38) may be directly in contact with the liquid placed in the bowl but that said emitter-receiver (38) may be disposed outside said bowl, secondly, the stand (10) defines a recess in which the container (20) is disposed, said recess being surrounded by the first circular rolling path (14) which has substantially the same diameter as the second rolling path (26) of the rim (32), a trough (16) externally surrounding the first rolling path (14) of the stand and being intended to receive liquid flowing over the overflow lip (24) of the rim (22) rolling members (27) being disposed between the rolling paths (14, 26) of the stand (10) and of the rim (22) ; thirdly, a transmission mechanism (82, 84) enabling the bowl (20) to turn with the emitter-receiver relative to the stand around the common axis of the rolling paths (14, 26). |
