"Thermometers, hypodermic syringes bistouries "
A surgical cutting instrument, with a rather long narrow blade, such as might be used to lance an abscess.

Webster's 1913 Dictionary

Definition: \Bis"tou*ry\, n.; pl. {Bistouries}. [F. bistouri.]
A surgical instrument consisting of a slender knife, either
straight or curved, generally used by introducing it beneath
the part to be divided, and cutting towards the surface.