Resuscitator with carbon dioxide detector
First Claim
Patent Images
1. A device for isolating a carbon dioxide indicator from the atmosphere, comprising:
- an annular shaft having an internal wall and an external wall, the shaft having a fluid passage formed through at least a portion of its length, the fluid passage operable to place the internal wall in fluid communication with the external wall, the internal wall defining a longitudinal axial aperture;
a filter barrier removably disposed about the external wall and operable to separate the indicator from the external wall;
first sealing means coupled to the external wall;
second sealing means coupled to the external wall and spaced apart from the first sealing means, the fluid passage and the filter barrier located between the first sealing means and the second sealing means, the second sealing means separated from the first sealing means by a distance greater than the height of the indicator;
a carbon dioxide absorber removably disposed within the aperture; and
a plug operable to removably occlude the aperture to isolate the indicator from the atmosphere.
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Abstract
A resuscitator is provided with an integral carbon dioxide detector for indicating the presence of carbon dioxide in a patient. The carbon dioxide detector is a conventional pH sensitive chromogenic compound that is positioned in the breathing circuit to permit a rapid indication. Additionally, a unique plug is provided for sealing the indicator from the atmosphere while in storage to prevent contamination and degredation of the indicator compound.
64 Citations
1 Claim
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1. A device for isolating a carbon dioxide indicator from the atmosphere, comprising:
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an annular shaft having an internal wall and an external wall, the shaft having a fluid passage formed through at least a portion of its length, the fluid passage operable to place the internal wall in fluid communication with the external wall, the internal wall defining a longitudinal axial aperture; a filter barrier removably disposed about the external wall and operable to separate the indicator from the external wall; first sealing means coupled to the external wall; second sealing means coupled to the external wall and spaced apart from the first sealing means, the fluid passage and the filter barrier located between the first sealing means and the second sealing means, the second sealing means separated from the first sealing means by a distance greater than the height of the indicator; a carbon dioxide absorber removably disposed within the aperture; and a plug operable to removably occlude the aperture to isolate the indicator from the atmosphere.
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Specification
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Current AssigneeTyco Healthcare Group LP (Medtronic Plc)
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Original AssigneeLife Design Systems, Inc. (Mallinckrodt plc)
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InventorsKirk, Gilbert M.
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Primary Examiner(s)RAEVIS, ROBERT R
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Application NumberUS08/514,112Time in Patent Office802 DaysField of Search73/23.3, 73/866.5, 422/84, 422/85, 128/202.22, 128/205.23US Class Current73/23.3CPC Class CodesA61M 16/0078 Breathing bagsA61M 16/0084 self-reinflatable by elasti...A61M 16/0816 Joints or connectorsA61M 16/106 in a pathA61M 16/12 by mixing different gasesA61M 2016/0413 with detectors of CO2 in ex...A61M 2230/432 partial CO2 pressure (P-CO2)
