[Skip to Content]
Access to paid content on this site is currently suspended due to excessive activity being detected from your IP address 54.205.150.215. Please contact the publisher to request reinstatement.
[Skip to Content Landing]
Article
April 1, 1911

AN IMPROVED APPARATUS FOR ESTIMATING THE PRESSURE IN THE CEREBROSPINAL SYSTEM

Author Affiliations

Volunteer Assistant, Pathological Laboratory, Mount Sinai Hospital NEW YORK CITY

JAMA. 1911;LVI(13):962-964. doi:10.1001/jama.1911.02560130026012
Abstract

Since the introduction by Quincke1 of an apparatus for estimating the cerebrospinal pressure, there have been numerous criticisms of the mechanics of the instrument and several attempts have been made, either to modify his apparatus, or to introduce a new principle. As devised by Quincke, the apparatus consists of the ordinary puncture needle and trocar, to which is attached a long piece of rubber tubing leading to an S-shaped piece of bent glass. According to the height to which the latter has to be raised the pressure is estimated, the reading being taken from the level of the hilt of the needle to the level of the fluid in the glass tube; this is measured by an independent centimeter scale. The imperfections in the use of this instrument are the following:

First, between the time when the trocar is withdrawn from the needle and the moment when the rubber

First Page Preview View Large
First page PDF preview
First page PDF preview
×