Gas-treatment devices
US7363925B2 · kind B2 · utility
19Cited by
11References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 2, 2004 |
| Grant date | Apr 29, 2008 |
| Priority date | — |
| Expiry date | Nov 2, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M16/047
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An HME for a tracheostomy tube has a flexible outer housing of a gas-permeable material containing an HME element of discrete particles, granules or the like of a hygroscopic material. The particles are contained between the outer housing and an inner wall of a foam. The inner wall has a ciliated surface facing the end of the tube, which acts to distribute gas over the surface of the HME element. The HME is attached to a flange on an inner cannula by means of a removable adhesive. The HME may include a suction port through a self-closing aperture, which makes a wiping seal with a suction catheter inserted in the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.