Hand-held instruments that access interior body regions

A cutter comprises: A first handle first function instrument, the first handle comprises a of the first finger-shaped upper surface and second finger-shaped upper surface of the handle at least two fingers and supporting on two sides; Comprising a handle and second function instrument, the second handle comprises a of the middle finger the outer surface and fourth finger-shaped upper surface of the handle at least two fingers and supporting on two sides; The first function instrument is the second function apparatus, forming a compound instrument, wherein when the first function in parallel with the second function instrument, the first handle form a compound handle and second handle matched, compound handle comprises a to form a compound finger-shaped upper surface of the first, and third, and fourth finger-shaped plate surface; the compound finger-shaped plate surface is further formed on two sides of with four fingers. The handle of the enhanced the mechanical superiority, such that the doctor reliably of the reverse a push and a driving force to the compound machine is, be prevented first and rotations between the second five.