Patent · US Expired

Inhalation therapy unit with a valve for limiting the inspiration flow

US6176237A · kind A · utility

112Cited by

9References

8Claims

0Family size

Assignee

PARI GmbH Spezialisten für effektive Inhalation · DE

Inventors

Eric Wunderlich · Gilching, DE
Robert Waldner · Peiting, DE
Martin Knoch · Starnberg, DE

Key dates

Filing date	Aug 4, 1998
Grant date	Jan 23, 2001
Priority date	—
Expiry date	Aug 4, 2018

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M15/002
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

A limiting valve (4) is provided in an inhalation therapy unit with a valve member (13) which closes an air through opening (12) in the idle state and corresponding to the pressure difference occurring over the valve opens same substantially proportionally up to a threshold value. If the threshold value is exceeded, the valve member (13) abuts against a limiting member (16) which limits the movement of the valve member (13) and the air passage orifices (17) of which are partially closed by the valve member (13) so that air can only flow through the air passage auxiliary orifices remaining free. In this manner the patient using the inhalation therapy unit is urged to breath in the range below the threshold value, as his respiration above the threshold value is opposed by a considerably higher resistance.

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