Cyclopædia of obstetrics and gynecology . Fig. 177.—BRArxs Blcttt Hook. Fig. 17S—Decapitation after Braitk. Pierre Thomas has devised an apparatus which consists in: 1. Braiinshook. 2. A chain-saw. 3. A vaginal protector, Braiins hook is perforated for the passage of the chain-saw, and is usedfor passing the chain around the foetal neck. This accomplished, thehook is withdrawn, and the two ends of the chain passed through thetubes of the vaginal protector (Fig. 179, B), and the neck is sectioned byworking the chain. Thomas says of his method: We believe that ithas the following advantages over
Cyclopædia of obstetrics and gynecology . Fig. 177.—BRArxs Blcttt Hook. Fig. 17S—Decapitation after Braitk. Pierre Thomas has devised an apparatus which consists in: 1. Braiinshook. 2. A chain-saw. 3. A vaginal protector, Braiins hook is perforated for the passage of the chain-saw, and is usedfor passing the chain around the foetal neck. This accomplished, thehook is withdrawn, and the two ends of the chain passed through thetubes of the vaginal protector (Fig. 179, B), and the neck is sectioned byworking the chain. Thomas says of his method: We believe that ithas the following advantages over Braiins: 1. The maternal parts cannot E5IBKY0T0:Mr. 281 be injured either by tlie liook or tlie chain. 2. The operation is lesspainful, and is more certain and rapid. TVe have already stated thatBarnes carries an ecraseur wire by means of Ramsbothams hook, in orderto perform brachiotomy. The two most recent embryotomes are that of Taruier and that ofThomas, which is simply a modification of Fig. 179.—Pizrre Thohas IxsTRruENTs for Decapitation. Tarniers embryotome is composed of two blades, two conducting rods,a chain-saw. One blade is called the posterior and the other the blades are grooved. The posterior blade is curved to fit into theconcavity of the sacrum. The anterior blade is slightly curved for inser-tion between the foetus and the pubes. The blades are applied aroundthe foetus, and are locked and screwed down until the handles are closetogether. The chain is then pushed through the groove in the blades by 282 A TREATISE OX OBSTETRICS. means of the conducting rods, and worked along as well by the screw foetus is divided from below upwards. The entire thickness of thebody may be cut through in five seconds, according to Tarnier. Thomass latest embryotome consists of two blades, two stylets, a specialsaw. (Fig. 181.) The instrument is used as follows: The posteriorblade is inserted behind the neck or the trunk of the foetus, and th
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