Abstract: A catheter is provided with a collection chamber located between a seal and a cap. The seal is located distal from the collection chamber, and the cap is located proximal from the collection chamber. The seal may be opened and closed to alternately allow the passage of material into the collection chamber and prevent fluid from escaping from the shaft lumen. The cap may be opened and closed to allow the removal of a mass from the collection chamber and to prevent fluid from escaping during collection of the mass.

Abstract: A catheter is provided with a collection chamber located between a seal and a cap. The seal is located distal from the collection chamber, and the cap is located proximal from the collection chamber. The seal may be opened and closed to alternately allow the passage of material into the collection chamber and prevent fluid from escaping from the shaft lumen. The cap may be opened and closed to allow the removal of a mass from the collection chamber and to prevent fluid from escaping during collection of the mass.

Abstract: A brain cooling system includes a gas delivery system and a cooling apparatus. The gas delivery system may include an apparatus for establishing a desired pressure and flow rate for gases to be inhaled by a subject and an interface element. The pressurization element may comprise a continuous positive airway pressure (CPAP) device. The interface element may include a breathing mask, such as a nasal non-invasive ventilation (NIV) mask, or a nostril occlusive nasal delivery device. Such a brain cooling system may be used to treat cerebral hypoperfusion, as may occur with a cerebral vascular accident (CVA), such as a stroke, a traumatic brain injury, or cardiac arrest, or with conditions that may lead to a CVA or to cerebral hypoperfusion.