| 摘要 |
FIELD: surgical instruments or methods. ^ SUBSTANCE: tissue dilator comprises flexible film mounted on the working member. The working member has movable members of tubular housing. The working housing has base, drive for movable members, mandrin, and means for spatial orientation, which is made of a handle made of connecting member for assembling equipment. The length of the movable members corresponds to the length of the tubular housing. The mandrin has blunt working face, and flexible film is made of a detachable or nondetachable atraumatic means. ^ EFFECT: simplified structure and enhanced convenience. ^ 5 cl, 4 dwg |
