注射阀门外置型皮肤软组织扩张器的研制

THE INVESTIGATION OF TISSUE EXPANDER WITH EXTERIORIZED INJECTION VALVE /

皮肤软组织扩张术已广泛用于临床。为了便于快速扩张，利于引流扩张区积液，预防感染，设计了新型皮肤软组织扩张器。分为两型：一型为单囊、单管、单腔；二型为单囊、单管、双腔。引流孔可用活塞封闭。注射阀门采用带裂隙的外加橡胶套圈紧固。经动物实验证明，使用此种新型扩张器无一例形成腔内感染。在４２份细菌培养标本中。

A new kind of soft tissue expander with exteriorized injection valve was reported. Two types of expanders were designed: one with single cyst, single tube and single chamber, and the other with single cyst, single tube but double chambers, i.e, an additional drainage chamber. The drainage orifice could be controlled by a valve. An animal experiment had been conducted, and the outcome suggested that the new expander could provide rapid expansion of the soft tissue, sufficient drainage of the expanded area. The bacterial culture showed that among the 42 samples obtained from the expanded cyst, only 3 were positive. (2 of bacteria and 1 of fungus), suggesting comparatively low cyst infection.