Plethysmographic measuring chamber

Details Plethysmographic measuring chamber Plethysmographic measuring chamber

1987-12-22

1989-06-27

Howell, Kyle L.

Surgery

Truss

Pad

128747, 12820014, 12820312, A61M 1500

Patent

active

048419826

ABSTRACT:
The chamber comprises a tubular body terminating in front in a part shaped as a truncated rectangular cone. Two elastomeric rings are for adjusting around the snout of an animal, such as a rat or guinea pig. A piston bounds the space occupied by the animal's body. A collar disposed between the two rings comprises two annular segments each secured to a rod extending radially towards the exterior and secured to an actuating means and associated with a cam. A spring constantly urges the segments towards the interior. The collar is for adjusting behind the animal's head to prevent it from moving back.

REFERENCES:
patent: 4402315 (1983-09-01), Tsuda et al.
patent: 4660572 (1987-04-01), Muruyama et al.
Depledge et al.; "A Technique for Measuring Carbon Monoxide Uptake in Mice"; Int. I. Radiation Oncology. Biol. Phys., vol. 7, No. 4, 4-1981, pp. 485-489.

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