Peroral endoscopy and laryngeal surgery . osswise fixed pin by pulling it into the tube of a combination tube antlhook forceps, which seems a promising though as yet untested is intended for untempered ])ins which will bend without has successfully used an instrument shaped like a tack-drawer for ex-tracting the embedded point of a tack ; and this should be equally usefulfor an embedded pin poiiU. 280 MECHANICAI, PROBLEMS OF FOREIGN BODY EXTRACTION. Extraction of lacks, nails and large licadcd foreign bodies from thetracheobronchial tree. Tacks with sharp points often pre
Peroral endoscopy and laryngeal surgery . osswise fixed pin by pulling it into the tube of a combination tube antlhook forceps, which seems a promising though as yet untested is intended for untempered ])ins which will bend without has successfully used an instrument shaped like a tack-drawer for ex-tracting the embedded point of a tack ; and this should be equally usefulfor an embedded pin poiiU. 280 MECHANICAI, PROBLEMS OF FOREIGN BODY EXTRACTION. Extraction of lacks, nails and large licadcd foreign bodies from thetracheobronchial tree. Tacks with sharp points often present the prob-lem of the buried point and the toggle and ring tendency to hook overthe tube mouth if not grasped on end, which have been considered in thesection on extraction of pins. In addition, however, the large head pre-sents a special problem because of its tendency to act as an anchor whenburied in swollen mucosa, or in a cicatricial stenosis. The latter con-dition will be mentioned in a future chaiiter on the problems associated. Fig. 179a. Schema illustrating the mechanical prol)lem of extracting a pin, alarge part of whose shaft is Iiuried in the hroncliial wall, B. The pin must bepushed downward and if the oritice of the branches, C, D, are too small to admitllie head of the pin some other orifice (as at A) must be found by palpation (notijy violent pushing) to admit the head, so that the pin can be pushed downwardpermitting the point to emerge (E). The point is then manipulated into the bron-choscopic tube-mouth by means of co-ordinated movements of the lironchoscopiclip and the side-curved forceps, as shown at F. with prolonged sojourn. The traction renuired in some instances raisesthe question as to how much traction one may safely make. The tracheo-bronchial tree, and with it the lungs, are so freely movable that it can befelt to yield resiliently when traction is made on an anchored tack.* Inmany such cases, however, it will be found that the foreign body is no
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrespira, bookyear1915
