Patent ID: 8628479
Filing Date: 2014-01-14
Classification: A61B

Abstract:
1. A duel-chamber plethysmograph for transmitted test animal pulmonary data to differential pressure transducers comprised of: a) a first chamber having a first attachment opening; b) a second chamber having a second attachment opening attachable to said first attachment opening at an interface; c) a sealing member insertable into said plethysmograph between said first and second chambers to block the passage of air between said chambers, said sealing member including a seal with an opening to receive the head of the test animal whereby the animal breaths air in the second chamber, while the animal's body is within the first chamber; and d) a restraining member attachable to said sealing member, said restraining member including a clamp positionable behind the test animal's head, thereby preventing the animal from withdrawing its head from the restraining member, said restraining member and said sealing member being insertable into said second chamber after the test animal is placed in said restraining member and held by said clamp.