A suction disc used for abutting against a dressing covering a wound is provided. The suction disc includes a base plate and a case. The base plate has a first surface and a second surface. The first surface abuts against the dressing. The base plate further has a first opening and a second opening. The first opening and the second opening respectively communicate with the first surface. The case has a first chamber and a second chamber. The case connects with the second surface. The first chamber communicates with the first opening. The second chamber communicates with the second opening. The suction disc has a channel at least partially disposed inside a sidewall of the case surrounding the first chamber, and at least partially penetrating the base plate. An end of the channel communicates with the first chamber. Another end of the channel communicates with the first surface.一種用於抵接覆蓋於傷口上之敷料的吸盤包含底板與殼體。底板具有相對之第一表面與第二表面，第一表面用以抵接敷料，底板更具有至少一第一開口與至少一第二開口，第一開口與第二開口分別連通第一表面。殼體具有至少一第一腔室與至少一第二腔室，殼體連接第二表面，且第一腔室連通第一開口，第二腔室連通第二開口。吸盤具有至少一通道，至少部分設置於殼體圍繞第一腔室之內壁內，以及至少部分穿越底板，通道之一端連通第一腔室，通道之另一端連通第一表面。
