A handbook of diseases of the nose and nasopharynx / by James B. Ball.

  • Ball, James B. (James Barry), 1849-1926.
Date:
1890
Catalogue details

Licence: Public Domain Mark

Credit: A handbook of diseases of the nose and nasopharynx / by James B. Ball. Source: Wellcome Collection.

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    to the sun, and turned in such a direction that the sun's rays are thrown on the forehead reflector of the operator. Having concentrated a bright circle of light on to the patient's nose, we can obtain a view of the interior of the vestibule by getting the patient to tilt the head slightly back, and raising the tip of the nose with the thumb. To examine the nasal cavities thoroughly from the front, one or other of the various nasal specula must be used to dilate the carti- laginous portion. It is unnecessary to describe all the different kinds of specula that have been invented. Duplay's speculum (Fig. 10), is that which I believe to be most generally useful. It is made of polished metal, and is Fig. 12.—Thudlctum's Nasal Speculum. Fig. 13.—Lennox Browne'a Nasal Speculum. of bivalve form. When closed it forms a hollow cone, slightly flattened from side to side, and, by means of a screw, one blade is separated from its fellow at the distal end. The movable blade should, when inserted, be next the ala. Frankel's speculum (Fig. 11), consists of two fenestrated blades, made of stout wire, which are gradually separated by working a screw at the end. Both blades may be inserted into one nostril, or one blade may be inserted into each nostril, and both nostrils dilated at once. Most operators use it in the former manner. Thudichum's speculum (Fig. 12), consists of two flattened blades, united by a bridge of flexible wire. The spring is too strong in most of those sold. If well borne, Thudichum's speculum is a very con- venient one, and is self-retaining. Lennox Browne has