Patent · US Active

Multi-stage nasal filter

US10682536B1 · kind B1 · utility

0Cited by
8References
3Claims
0Family size

Inventor

Key dates

Filing dateDec 4, 2019
Grant dateJun 16, 2020
Priority date—
Expiry dateDec 4, 2039

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61M2210/0618
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

Devices and methods of inhibiting the inhalation of particulates using a resiliently deformable filter packaged in a sealed envelope containing a liquid medium. The method includes opening the sealed package to thereby expose the filter to ambient air; removing the filter from the package; inserting the filter into a distal region of a nostril; and urging the filter from the distal region to a proximal region of the nostril while simultaneously swabbing the distal region with the liquid disinfectant. The filter includes: an initial stage characterized by a first pore size; an intermediate stage characterized by a second pore size; and a final stage characterized by a third pore size, wherein the third pore size is a smaller than the first and second pore sizes.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.