Medical nebulizer for fast drug delivery

a nebulizer and fast technology, applied in the field of aerosol delivery devices, can solve the problems of affecting the nebulizer's nebulization speed, the particle size distribution of the aerosolized medicament is not maintained by the beneficial particle size distribution of the aerosolized medicament, and the nebulizer's speed is increased. the effect of enhancing the nebulization speed

Inactive Publication Date: 2019-02-07
MEDLINE IND LP
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present disclosure describes a nebulizer that is designed to atomize liquid medication for inhalation. The nebulizer includes a jar with a reservoir for holding the medication and a compressed gas passage. A cap is connected to the jar, which includes an entrainment port for receiving ambient room air and an entrainment chimney with a second opening for introducing the ambient room air into the inner chamber of the nebulizer. The cap may also include an impingement member that further atomizes particles in the aerosol flow and prevents the user from exhaling and driving the medication out of the nebulizer. The technical effect of this disclosure is that it provides a more efficient and effective means of delivering liquid medication for inhalation through a nebulizer.

Problems solved by technology

Many conventional medical nebulizers produce aerosol particles having an aerodynamic diameter that is less than 2 micrometers, which results in the deposition of the particles within the alveoli of the user's lungs.
Other conventional medical nebulizers produce aerosol particles having an aerodynamic diameter that is over 5 micrometers, which results in the deposition of particles on the surface of the upper respiratory airways instead of reaching the lungs.
However, conventional nebulizers that rapidly produce aerosol fail to maintain a beneficial particle size distribution of the aerosolized medicament.
This is because increasing the nebulization rate for such conventional nebulizers results in aerosol particles that are often too large to be safely and effectively inhaled by a user.
Moreover, while some conventional nebulizers entrain room air during the nebulization process, such entrainment requires effort by the user to breath in the room air through the nebulizer.
Thus, users having poor health are often not able to effectively entrain a sufficient amount of room air into such conventional nebulizers.
Additionally, users who rely on such conventional nebulizers that entrain room air during the nebulization process often experience deleterious effects, such as degrading the liquid consumption rate in the jar of the nebulizer, as well as spitting of the liquid medicament onto the user's hands and face via escape through an entrainment flow path.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Medical nebulizer for fast drug delivery
  • Medical nebulizer for fast drug delivery
  • Medical nebulizer for fast drug delivery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039]The disclosure will now be described with reference to the drawing figures, in which like parts are referred to with like reference numerals throughout. One or more embodiments in accordance with the present disclosure provide a breath enhanced medical nebulizer 10 for fast drug delivery, as shown throughout FIGS. 1-5. The nebulizer 10 is configured to aerosolize a liquid medication into an aerosol spray or mist for safe and effective inhalation by a user, such as a patient. The nebulizer 10 comprises a jar 20 configured to hold the liquid medication, a jet 30 configured to cooperate with the jar 20, and a cap 40 configured to detachably connect to the jar 20.

[0040]The jar 20 includes an outer surrounding wall 21 and defines a reservoir 22 configured to hold a liquid 24, such as a liquid medication. The jar further defines a compressed gas passage 26 configured to receive a flow of compressed gas. More particularly, the jar 20 comprises a compressed gas nozzle 23 having a firs...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A nebulizer is provided to atomize a liquid medication for rapid delivery of an aerosol spray to a user via inhalation. The nebulizer includes a jar having a compressed gas passage. A jet cooperates with the jar and has a jet orifice through which the liquid medication and the compressed gas are discharged to form an aerosol flow. The cap is connected to the jar to define an inner chamber. The cap includes an entrainment port for ambient room air, and a chimney in fluid communication with the entrainment port and the inner chamber. A deflector base having an impingement member is located adjacent to the entrainment chimney and is spaced below an opening thereof by a predetermined distance to provide a flow of the ambient room air to be entrained in the aerosol flow in order to enhance nebulization speed while maintaining a desired aerosol particle size.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to U.S. Provisional Patent Application No. 62 / 540,225 filed Aug. 2, 2017, the content of which is incorporated herein by reference in its entirety.FIELD OF THE DISCLOSURE[0002]The present disclosure relates generally to an aerosol delivery device, and more particularly, to a medical nebulizer configured to rapidly nebulize liquid medicament into an aerosol spray for inhalation by a user.BACKGROUND[0003]Medical nebulizers are used to aerosolize a liquid medicament for inhalation by a user. The aerosol is produced via the nebulization process by dispersing fine droplets of the liquid medicament into a flow stream of gas. The nebulized medicament can then be delivered into the airways of the user's lungs, which can be very useful in medical treatments due to the high permeability of the lungs. Medications inhaled into the lungs are therefore readily able to enter the user's bloodstream for dispersion througho...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61M11/04A61M11/00A61M15/00
CPCA61M11/04A61M11/001A61M15/002A61M15/0086A61M11/06A61M11/002
InventorDWYER, DANIEL P.GRAHAM, ERIN
OwnerMEDLINE IND LP