2023年5月29日 · A waterless spirometer constructed of two large rectangular plates with edges connected by accordion-pleated rubber so that large changes in volume are accommodated by small changes in the acute angle of the wedge-shaped interior, sensed by an electrical transducer; designed for rapid response by reducing the acceleration of the moving parts.

Wedge Bellows. Vitalograph is probably best known for its iconic wedge bellows spirometers which were produced from 1962 with the last examples of such devices sold in the early 2000s. Many of these devices are still in use in research and teaching establishments, indicating the robustness and high quality build that Vitalograph devices espouse.

a waterless spirometer constructed of two large rectangular plates with edges connected by accordion-pleated rubber so that large changes in volume are accommodated by small changes in the acute angle of the wedge-shaped interior, sensed by an electrical transducer; designed to record rapid changes in respiratory function.

2015年6月12日 · A third type of volume-displacement spirometer is the bellows or wedge bellows spirometer. Both devices consist of a collapsible bellows that folds or unfolds in response to breathing excursions. The conventional bellows design is a flexible accordion-type container.

A spirometer is an apparatus for measuring the volume of air inspired and expired by the lungs. A spirometer measures ventilation, the movement of air into and out of the lungs. The spirogram will identify two different types of abnormal ventilation patterns, obstructive and restrictive.

Wedge-bellows spirometer. The exhaled gases are collected into an expandable bellows. The air entering the bellows causes the free wall of the bellows to move outward, and its displacement is directly related to the volume of air exhaled.

2018年8月22日 · A spirometer acts as a mechanical integrator, with airflow as input and volume displacement as output. Other types of spirometers include the Wedge Spirometer and Ultrasonic Spirometer.

Wedge Spirometer. Wedge Spirometer-measure relative (peal-to-peak) lung volumes, cannot measure absolute volumes (TLC, RV, FRC). soda-lime canister: absorbs excess CO2. bellows. nose plug. flow. angular displacement transducer. volume. spirometer output: spirogram

A wet-wedge spirometer which continuously and accurately measures tidal volume in the spontaneously breathing anaesthetised patient has been developed. This spirometer may be adapted for use with any anaesthetic system which employs a …

Wedge Spirometer measures relative lung volumes and cannot measure absolute volumes. It includes a soda-lime canister, bellows, nose plug, and angular displacement transducer.