A combination of the English and French obstetric locks, for the prevention of dangerous compression of the fetal head by forceps / by A. Ernest Gallant.

  • Gallant, A. Ernest (Albert Ernest), 1861-
Date:
1907
Catalogue details

Licence: In copyright

Credit: A combination of the English and French obstetric locks, for the prevention of dangerous compression of the fetal head by forceps / by A. Ernest Gallant. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    when any portion of the parturient canal is nar- rowed or undilated. The flanges serve as guides when adjusting the blades, which are steadied by the screw, and when the thumb-screw is set the blades are securely fastened together, with the fulcrum at the lock. Advantages of the Safety Lock/' With this combination lock we secure all the ad- vantages and eliminate the disadvantages of the loose lock, the button lock, and the set-screw lock, either of which can be brought into play at the option of the operator. (a) With the thumb-screw set we can prevent approximation of the blades during traction and thereby avoid undue compression of the fetal head. (b) With the thumb-screw closed we can bring into play the screw-pin, in the handles, and hold the blades as wide apart as desired. (c) When the thumb-screw is half-set, the for- ceps can be used as when provided with the button lock. (d) By removing the set-screw we can make use of the forceps as with the English or loose lock. (e) By the aid of the flanges the forceps can be adjusted quickly; locked easily and fastened se- curely. (f) The thumb-screw can be put on any forceps with the so-called English or loose lock. 60 West Fifty-sixth Street.
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