涩里番

Piston Recorder

piston recorder
贬别颈驳丑迟:听8听肠尘听
奥颈诲迟丑:听25听肠尘听
顿别辫迟丑:听18听肠尘听
Manufacturer:聽C.F. Palmer聽(London) LTD.聽聽
Material:聽Metal, plastic聽
Date: c1940聽


Dr. Richard Fraser, Director of the Maude Abbott Medical Museum, provides a brief description of the function and/or use of the equipment.

This instrument was used to measure volumes or pressures in聽organs such as the聽heart聽or聽lung,聽or in a聽limb.聽聽A聽flexible聽tube聽connected聽the聽narrow pipe at the bottom聽of the recorder聽(A)聽to聽the organ.聽聽An increase聽(or聽decrease)聽in聽the pressure in that pipe聽pushed聽up (or聽pulled聽down) the aluminium piston. The聽latter聽was attached to a聽lever聽(B)聽that is in turn attached to a聽recording device聽such as聽a kymograph.

recorder with letters

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