Flow interrupter for respiratory treatment apparatus
US9833591B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 2012 |
| Grant date | Dec 5, 2017 |
| Priority date | — |
| Expiry date | Jun 30, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L27/107
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flow interrupter for gas flow delivered by a delivery conduit in a respiratory treatment system permits temporary interruption of flow in the conduit. Typically, the apparatus has a passage to conduct a breathable gas. The passage traverses through a flexible wall such as a stretchable sleeve. The flexible wall may include a first and second ends. A manipulator may be attached to the flexible wall. The flexible wall sleeve may be adapted to twistably collapse between the first and second ends so as to reduce the passage of the channel by operation of the manipulator. The flow interrupter may be formed with a swivel and operation of the sleeve may be implemented by rotation of the swivel. Sufficient rotation of such a swivel may form a vortex closure of material to close the channel. Release of the manipulator may then permit unwinding of the vortex closure, re-opening the channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.