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US 4,706,683 AGranted
Method and apparatus for bolus delivery of gases and aerosols and insufflations
AssigneeBowman Gray School of Medicine, Wake Forest University
InventorsHenry Chilton, Lester Dickson
Life of this patent
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Abstract
A method and apparatus for the bolus administration of a gas such as a radioactive gas includes a face mask defining a closed space into which a straw-like administration tube extends sufficiently to permit a patient wearing the face mask to suck on the tube. The radioactive gas is introduced through the administration tube and exhaled into the face mask.
Claims27
An apparatus for administering of a substance, comprising:
- a face mask defining a cavity having a face opening shaped and sized to fit over at least the mouth of a patient to define a closed space, said face mask including seal means for sealing against a face of a patient;
- conduit means for communicating said cavity with a respiratory gas volume;
- and
- administration means in said cavity, said administration means having an open end positionable in said face mask such that said patient wearing said face mask can suck on said open end, said administration means including interfacing means for communicating said administration means with a source of a substance.
1 more element
A method for administration of a substance, comprising the steps of:
- applying a face mask to the face of a patient to define a closed space;
- connecting said closed space to a shielded breathing apparatus;
- providing in said closed space an administration means having an open end positionable such that the patient can suck on said open end;
- and
- injecting a substance into a portion of said administration means outside of said face mask while the patient is sucking on said open end, whereby said substance is inhaled by the patient.
2 more elements
Dependencies are inferred from the claim text.