Exhalation valve assembly with integral flow sensor
First Claim
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1. An exhalation assembly removably and directly attached to an exhalation valve module attached to a ventilation system, the exhalation assembly comprising:
- a filter body containing filter media and having a filter inlet port and a filter outlet port, wherein the filter body is removably and directly attachable to the exhalation valve module, wherein the filter body, when attached to the exhalation valve module, filters all gas delivered to the exhalation valve module prior to the gas entering an inlet port of the exhalation valve module; and
a condensate trap including a trap body attached to the filter body, the condensate trap receiving the gas delivered to the exhalation assembly via a trap inlet port extending through a side of the filter body and connectable to an expiratory limb prior to delivery of the gas to the filter body,wherein the filter body when attached to the condensate trap covers an opening of the trap body to enclose the condensate trap and position the filter inlet port over a portion of the opening.
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Abstract
An exhalation assembly that controls the pressure of exhaled gas in a ventilation system is described. The exhalation assembly includes a filter body and a condensate trap. Additionally, a filter/trap module that includes a filter body and a condensate trap is also described.
739 Citations
18 Claims
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1. An exhalation assembly removably and directly attached to an exhalation valve module attached to a ventilation system, the exhalation assembly comprising:
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a filter body containing filter media and having a filter inlet port and a filter outlet port, wherein the filter body is removably and directly attachable to the exhalation valve module, wherein the filter body, when attached to the exhalation valve module, filters all gas delivered to the exhalation valve module prior to the gas entering an inlet port of the exhalation valve module; and a condensate trap including a trap body attached to the filter body, the condensate trap receiving the gas delivered to the exhalation assembly via a trap inlet port extending through a side of the filter body and connectable to an expiratory limb prior to delivery of the gas to the filter body, wherein the filter body when attached to the condensate trap covers an opening of the trap body to enclose the condensate trap and position the filter inlet port over a portion of the opening. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A filter/trap module comprising:
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a filter body containing a hollow cylindrical filter media and having a filter inlet port and a filter outlet port and, wherein the filter body is removably and directly connectable to an exhalation valve module, wherein the filter body, when attached to the exhalation valve module, filters all gas delivered to the exhalation valve module prior to the gas entering the filter outlet port; and a condensate trap attached to the filter body, the condensate trap receiving the gas delivered to the filter/trap module via a trap inlet port and connectable to an expiratory limb prior to delivery of the gas to the filter body, wherein the filter body when attached to the condensate trap positions the filter inlet port over an opening of the condensate trap, wherein the hollow cylindrical filter media has a sealed bottom creating an annulus within the hollow cylindrical filter media causing all of the gas to be filtered by passing through one or more sides of the hollow cylindrical filter media.
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Specification