SAW

n. Sa4. Or., irpLiav. Lat., serra. Fr.,scie. Ger., Sage. An instrument for cutting, consisting of a thin blade with sharp teeth on its edge. Amputating s. A s. resembling either the dovetail or the jig s. of the carpenter, with the teeth set so as to cut both with the forward and backward motion. [E.] Butcher's s. A bow s. invented by Butcher, of Dublin, so arranged that the blade can be turned at any angle. [E.] Capital s. A s. with a broad and thin blade and heavy back, used either in amputation or in postmortem examinations for removing the calvaria. There are several varieties, such as Satterlee's, Parker's, etc., differing but little. [E.] Chain s. Fr., scie d chaine (ou AMPUTATING SAW PISTOL HANDLE. chainette). Ger., Kettensdge. A chain-like instrument in which each segment of the chain is furnished with teeth and the ends of the chain are attached to movable hooked handles, [a, 34.] Circular. Fr., scie d molette. Ger., Krei dge, Scheibensdge. A steel disc serrated on the edge, placed in the axis or trans to versely_ the axis of a handle, and operated by a crank attached to BOW AMPUTATING SAW. or placed within the handle, [a, 34.] Crown s. See TREPHINE. Embryotomy s. Fr., embri/otome scie. An embryo to me having a s.-like action. Forceps-s. See the major list. Graefe'8 circular s. A small circular s. set at right angles to a straight handle which is fitted with a crank for making the blade CHAIN SAW WITH revolve. CARRIER. [E.] Heine's s. A very elaborate and complicated chain s. and drill combined, for operations on bones. [EJHey's s. A small s. with one cutting edge straight and the other convex, used in trephining. [E.] Maxilla s. A delicate, curved, sharp-pointed s. shaped like a curred bistoury. [E.j Rotating s. A bow am METACARPAL SAW. putating s. provided with a cogwheel attachment to impart rapid motion in various directions to a very fine blade. [E.] Skulls. Ger., Kopfsdge. See TREPHINE. Szymanowski's bone exsecting s. A bow s. with a flne wire blade and an arrangement in the handle for increasing the tension of the blade. [E.] [s. 446]