System for examining the pressure equalization function of the Eustachian tube

With the application of excess pressure into the nose and rhinopharynx during swallowing, the tubomanometer can record the opening parameters of the Eustachian tube and the pressure equalization function of the middle ear.

The principle and aim is to build up sufficient pressure in the nose and rhinopharynx that enables the tubomanometer to assess the latency = delay between the pressure application and the opening of the Eustachian tube. Deviations from standard values can be shown. The decisive value is the Opening Latency Index = R R = (P1-C1):(C2-C1)

The following pictures show indication of the various phases of pressure increase in the nasal cavity and velum closure. Indication of insufficient or incomplete velum closure.

Ventilation of the middle ear: Indication of tube reaction and tympanic movement by recording the pressure variations in the outer ear. The recordings indicate the opening pressure and opening latency of the Eustachian tube.

Art. No.   TMM-02

Preoperative Tubomanometry

  • No pressure increase in the ear
  • R = 0 (obstructive tube dysfunction)
  • Measurements at 30, 40, 50 millibar

Postoperative Tubomanometry

  • R > 1, normal increase in pressure with a slight delay,
    2 months after tube dilation
  • Measurements at 30, 40, 50 millibar

The Tubomanometer - non-invasive and non-traumatic assessment of dysfunctional tube ventilation

Included in delivery (Art. No. TMM-02) Tubomanometer universal-version, incl. software for Windows 7 / 8 / 10 with standard accessories:
  • 1 x article TMOR - clip (1x), ear plugs (8 x C34 / 4 x C35), silicone tube for clip incl. adapter (C97)
  • 2 x article C28F-OTO - nasal plugs for TMM-02, small
  • 4 x article C28E-OTO - nasal plugs for TMM-02, middle
  • 4 x article C28G-OTO - nasal plugs for TMM-02, big
  • 1 x article C20P - PVC tube 6x9 (1m)
  • 1 x article C89 - nose piece
  • 1 x article cable for printer - notebook - TMM

Ear plug for impedance measurements

  • For tubomanometry and tympanometry
Art. No.SizeDiameterColourPackaging
OS-0116 mmpurple10 pieces/ box
OS-0227 mmyellow10 pieces/ box
OS-0339 mmgreen10 pieces/ box
OS-04410 mmblue10 pieces/ box
OS-05511 mmwhite10 pieces / box
OS-06613 mmyellow10 pieces / box
OS-07715 mmgreen10 pieces / box
OS-08818 mmblue10 pieces / box

Video- and unit-cart

  • Width 618 mm, depth 624 mm, height 1146 mm
  • 100 mm diameter
  • 1 drawer
  • 4 layers
  • Handle
  • 4 wheels
  • No isolating transformer
  • Art. No.   80-698-00