Apparatus, system, and method for mechanical indication of pressure
This disclosure describes devices, systems, and methods related to a connector for a dressing, such as a dressing of a hyperbaric oxygen therapy system. An example of a connector includes a connector body configured to define at least a portion of a first channel. The connector also includes a viewing member coupled to the connector body. The connector further includes a deformable member positioned within the first channel. The deformable member is configured to deform based on a pressure associated with the deformable member and to provide a visual indication, via the viewing member, of the pressure.
1. A connector for a dressing, the connector comprising:
a connector body configured to define at least a portion of a first channel;
a viewing member coupled to the connector body; and
a deformable member positioned within the first channel and configured to deform based on a pressure of a cavity partially defined by the deformable member and to provide a visual indication, via the viewing member, of the pressure of the cavity, the cavity being distinct from a second cavity defined by the connector body, the viewing member, and the deformable member;
the deformable member being further configured to:
provide a first visual indication, via the viewing member, if the pressure of the cavity is greater than or equal to a first threshold; and
deform responsive to a force resulting from a pressure differential between the cavity and the second cavity.
2. The connector of claim 1 , wherein the deformable member comprises an elastic polymer.
3. The connector of claim 2 , wherein:
the deformable member is configured to deform to transition between a first state and a second state,
when the deformable member is in the first state, the deformable member is configured to indicate a neutral pressure state, and
when the deformable member is in the second state, at least a portion of the deformable member is viewable through the viewing member and configured to indicate a positive-pressure state.
4. The connector of claim 3 , wherein the first state comprises an undeformed state, and wherein the second state comprises a deformed state.
5. The connector of claim 4 , wherein:
when the deformable member is in the first state, the deformable member does not contact the viewing member, and
when the deformable member is in the second state, at least a first portion of the deformable member contacts the viewing member.
6. The connector of claim 5 , wherein the first portion has a first color or marking.
7. The connector of claim 6 , wherein:
the deformable member is configured to provide a second visual indication, via the viewing member, when the pressure of the cavity is greater than or equal to a second threshold.
8. The connector of claim 7 , wherein:
the deformable member is configured to deform to transition between the second state and a third state,
when the deformable member is in the third state, at least a second portion of the deformable member contacts the viewing member,
the second portion has a second color or marking that is different from the first color or marking of the first portion, and
the first state corresponds to a first range of pressures, the second state corresponds to a second range of pressures, and the third state corresponds to a third range of pressures.
9. The connector of claim 8 , wherein the second visual indication indicates an over-pressure state.
10. The connector of claim 9 , wherein the deformable member is configured to transition to the second state between 10 mm Hg and 22 mm Hg.
11. The connector of claim 10 , wherein the deformable member has a hardness in the range of 10 Shore A to 20 Shore A.
12. The connector of claim 11 , further comprising a pressure relief valve positioned within a second channel defined by the connector body and configured to enable flow when the pressure of the cavity is greater than equal to a threshold value.
13. The connector of claim 12 , wherein:
the pressure relief valve includes a valve selected from the group consisting of: a duckbill valve, an umbrella valve, and a combination duckbill umbrella valve, and
optionally, the pressure relief valve has a hardness in the range of 40 Shore A to 60 Shore A.
14. The connector of claim 13 , wherein the pressure relief valve is configured to generate an audio indication responsive to flow through the pressure relief valve.
15. The connector of claim 14 , wherein the threshold value associated with the pressure relief valve is between 22 mm Hg and 35 mm Hg.
16. The connector of claim 15 , wherein the viewing member comprises a window.
17. The connector of claim 16 , wherein the window comprises a transparent material or a translucent material such that the deformable member is at least partially occluded by the window in when the deformable member is in the first state and is visible via the window when the deformable member is in a second state.
18. The connector of claim 17 , wherein the window comprises frosted glass and is semi-opaque.