Thursday, March 13, 2014

Surgical Instruments Sharp 4 bone cutters






         Bone cutter has two straight sharp edges and may have one or two fulcrums for double action. They are used to cut a small bone or the irregular edge of long bone.
Rongeurs
Rongeurs are instruments with two curved cutting edges with one or two fulcrums for nibbling the edges of a bone to enlarge the cavity created.
         Those in use are:
         •       Horsley (Fig. 8.20)
         •       Cairns (Fig. 8.21)
         •       Killearn (Fig. 8.22)
         •       Pennybacher (Fig. 8.23)
         •       Bateman (Fig. 8.24).
Rougines
Rougines are sharp edged instruments. They are used to lift the periosteum from the surface of a bone. This is essential prior to using any cutting instruments on the bone.
         Roughine (periosteal elevators) in use are:
         •       Farabeuf (Fig. 8.25)
         •       Semb (Fig. 8.26)
         •       Tudor Edwards (Fig. 8.27)
         •       Doyen (Fig. 8.28).
Rib Cutters
Rib cutters are:
•       Vehmehren (Fig. 8.29)
•       Doyen (Fig. 8.30)
•       Giertz (Fig. 8.31).
         Access to the chest for procedures within the thorax or for draining of an infected pleural cavity may require rib cutters.
         These are of different shapes to match requirements of different ribs. There is a surface that protects the pleura from injury by the cutting edge of the cutter.


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