INSTRUMENT

n. I2n's tru2-m'nt. Gr., opyavov. Lat., instrumentum (from instruere, to build). Fr., j., outil. Ger., /., Werkzeug. It., instrumento, utensile. Sp., instrumento. 1. A tool, an implement. 2. An agent, an organ. [E.] Accoiichiri' (Ger.). An obstetrical i. Allingham's i. for fistula. An i. composed of a steel director and a strong pair of sci ors the back of one blade of which is ground to fit into the tunneled groove of the director, so that the blade can not slip out of the groove as it is forced through the fistula tract, [a, 40.] Canaliculus i. An i. devised by Green slade consisting of a fine director, in the groove of which is a sliding knife manipulated by the action of the thumb upon a small button in the handle of the i. It is used for widening the lacrymal canal, [a, 40.] Davidson's spray i. An atomizer consisting of a bottle with a concavity on one side, into which the compre ion bulb fits, and a spray tube having tips directing the spray in various directions, [a. 40.] Detschy's i. An i. consisting of an intra-uterine stem attached to a double wing-shaped pe ary, and manipulated by a screw, so that the womb can be flexed into any desired position, [a, 40.] Earle's i. for the extraction of cataract. Fr., i. d''extraction. Ger., /. zur Staarauszielmng. A small lancet, not now used, moving backward and forward between the blades of a forceps. The i. was introduced through the sclerotic and chorioid; the lancet was withdrawn by means of a spring in the handle, and the blades of the forceps were then opened and the cataract seized and brought away. fF.] Electro ma age i. An i. devised bv Butler, composed of a magnet and three cylinders, revolved by multiplying cog-wheels and developing magneto-electricity. It is said to po e the advantages of electricity and ma age combined, [a. 40.] Erweiterungsi' (Ger.). See DILATATORIUM. Geburtshulfliches I. (Ger.). An obstetrical i. Goetz's suture i. An i. composed of a curved needle fitted into a hollow handle, in which is a bobbin holding the suture silk and dealing it out as needed, thus obviating the nece ity of frequently threading the needle, [a, 40.] Grant's i. for oedema of the glottis. A small cap with a sharp hook attached fitted on to the end of the finger like a thimble, and used for scarifying. [E.] Gro 's foreign-body i. for the ear. A small steel shaft with an ear-scoop on one end and a fine bent point on the other for removing foreign bodies from the ear. [a, 40.] Hoflfs automatic suture i. An i. consisting of a long shaft with flared end and internal sliding bar, manipulated by a finger-ring. It is designed to introduce serre-fines instead of sutures into wounds, fa, 40.] I'besteck (Ger.). See Operating CASE. Sim's intra-uterine stem i. A Hodge pe ary, with an intra-uterine stem movable upon an axis, thus facilitating its introduction and allowing motion to the uterus, [a, 40.] Squarey's i. A straight self retaining stem pe ary, without any vaginal support. It is held in place by the automatic dilatation of its intra-uterine extremity. [, 40.] [s. 467]