Surgery – Truss – Pad
Patent
1979-06-27
1981-11-10
Howell, Kyle L.
Surgery
Truss
Pad
128746, 128401, 128152, A61B 500
Patent
active
042992370
ABSTRACT:
Apparatus for transferring thermal energy from a calorized fluid to an ear canal and tympanic membrane for carrying out caloric testing procedures includes use of an inflatable and distensible balloon-like receptacle insertable into the ear and having a distal end area which is moveable by distension of the receptacle walls towards the tympanic membrane. The receptacle is provided with an inlet and outlet for pressurized testing fluid, and the receptacle may be constructed to provide a test fluid internal flowpath and a vent flowpath for air trapped between the receptacle and the tympanic membrane. A stop member may be used to provide a reference stop for the receptacle and may also serve to support the receptacle in the ear as well as serve as a storage container for the collapsed receptacle. The receptacle, as well as the venting duct, can be corrugated to improve the flexibility of the receptacle, and a conical shaped inlet to the venting duct at the distal end area of the receptacle prevents irritating contact between the end of the duct and the tympanic membrane when the receptacle is distended.
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