Patent ID: 11911565
Assignee: FREUDENBERG MEDICAL, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A tracheostoma heat and moisture exchanging device, comprising:
a housing having a first opening that is adapted to open to a tracheostoma and a second opening that opens to ambient;
a foam filter disposed in the housing;
a closure member mounted to the housing and adapted to close a passage extending through the housing;
a locking mechanism engageable to prevent movement of the closure member to close the passage and disengageable to allow movement of the closure member to close the passage, wherein the locking mechanism includes a plurality of ledges disposed on a sidewall of the housing and a plurality of legs extending from the closure member wherein when the closure member is in a first rotatable position, the plurality of legs are each engageable with a respective one of the plurality of ledges to prevent movement of the closure member and when the closure member is in a second rotatable position the plurality of legs are each disengageable from the respective one of the plurality of ledges to allow movement of the closure member to close the passage; and
a detent feature on each of the plurality of legs of the closure member for engaging a corresponding one of a plurality of detent features on the housing for retaining the closure member in either of the first position and the second position.