Dry powder inhaler

Details Dry powder inhaler Dry powder inhaler

2006-01-10

2006-01-10

Mitchell, Teena (Department: 3743)

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

C128S203190

Reexamination Certificate

active

06983748

ABSTRACT:
A device for delivering a powdered medicament by inhalation comprises an air inlet passage having low pressure-drop and low turbulence for stabilizing air flow before aerosolization, a dosing cup in the region of reduced air velocity to delay aerosolization, a high pressure drop throat to generate a high velocity flow, a rapidly expanding diverging passage to create a free jet of air with high turbulence and an outlet passage having large cross-sectional area to control the rate of dissipation of the free jet. The device is simple yet capable of consistently providing uniform and effective powder aerosolization and deagglomeration over a variety of patient inhalation profiles.

REFERENCES:
patent: 3831606 (1974-08-01), Damani
patent: 3948264 (1976-04-01), Wilke et al.
patent: 4200099 (1980-04-01), Guenzel et al.
patent: 4240418 (1980-12-01), Rosskamp et al.
patent: 4524769 (1985-06-01), Wetterlin
patent: 5113855 (1992-05-01), Newhouse
patent: 5161524 (1992-11-01), Evans
patent: 5301666 (1994-04-01), Lerk et al.
patent: 5327883 (1994-07-01), Williams et al.
patent: 5349947 (1994-09-01), Newhouse et al.
patent: 5388572 (1995-02-01), Malhauser et al.
patent: 5575280 (1996-11-01), Gupte et al.
patent: 5676130 (1997-10-01), Gupte et al.
patent: 5724959 (1998-03-01), McAughey et al.
patent: 5727546 (1998-03-01), Clarke et al.
patent: 5875776 (1999-03-01), Vaghefi
patent: 6026809 (2000-02-01), Abrams et al.
patent: 6065472 (2000-05-01), Anderson et al.
patent: 6119688 (2000-09-01), Whaley et al.
patent: 6182655 (2001-02-01), Keller et al.
patent: 6332461 (2001-12-01), Hyppola
patent: 6371111 (2002-04-01), Ohki et al.
patent: 6655381 (2003-12-01), Keane et al.
patent: 6810874 (2004-11-01), Koskela et al.
patent: 2165159 (1986-04-01), None
patent: WO 92/00771 (1992-01-01), None
patent: WO 92/09322 (1992-06-01), None
patent: WO 93/03782 (1993-03-01), None
patent: WO 97/20589 (1997-06-01), None
patent: WO 97/26934 (1997-07-01), None
patent: WO 98/26828 (1998-06-01), None
patent: WO 99/07426 (1999-02-01), None
Derwent Abstract of WO 93/03782.
Derwent Abstract of WO 97/20589.

Affiliated with

Also associated with

Rating

Dry powder inhaler does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dry powder inhaler, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dry powder inhaler will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3588457