Tool and method for customized inhalation

• US 20080295830A1
• Filed: 05/30/2007
• Published: 12/04/2008
• Est. Priority Date: 05/30/2007
• Status: Abandoned Application

• Current Assignee: L'Air Liquide Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude (L'Air Liquide SA)
• Original Assignee: L'Air Liquide Societe Anonyme Pour L'Etude et L'Exploitation Des Procedes Georges Claude (L'Air Liquide SA)
• Inventors: Apiou, Gabriela, Texereau, Joelle, Katz, Ira, Martonen, Teddy Blayne, Caillibotte, Georges, Pichelin, Marine
• Application Number:
  US11/806,136
• Publication Number:
  US 20080295830A1
• Time in Patent Office: Days
• US Class Current: 128/203.15
• CPC Class Codes: A61M 11/00 Sprayers or atomisers specially adapted for therapeutic purposes in general B05B; aerosol containers B65D83/14
• CPC Class Codes: A61M 15/00 Inhalators drug delivery in endotracheal tubes A61M16/04
• CPC Class Codes: A61M 16/122 with dilution
• CPC Class Codes: A61M 16/14 by mixing different fluids, one of them being in a liquid phase
• CPC Class Codes: A61M 2202/0208 Oxygen
• CPC Class Codes: A61M 2202/025 Helium
• CPC Class Codes: A61M 2202/064 Powder
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: G09B 23/288 for artificial respiration or heart massage

Abstract

A method for designing and/or customizing the treatment or for treating by inhalation of a patient suffering from a respiratory or non-respiratory disease including the steps of presenting a patient suffering from the disease; determining the kind of disease of the patient; prescribing at least one drug and/or gas and at least one kind of device to be used for administrating the drug or gas; inputting into a processing element, data chosen among the drug and/or prescribed gas and drug particle size obtained with the prescribed device; inputting into the processing element at least one patient characteristics of the patient; inputting into processing element at least one morphology and/or ventilatory condition of the patient; running a code in the processing element using the input data and conditions thereby calculating a flow and/or deposition characteristics customized to the patient.

Claims

1. A method for designing and/or customizing the treatment or for treating by inhalation of a patient suffering from a respiratory or non-respiratory disease comprising the steps of:

a) presenting a patient suffering from said disease,

b) determining the kind of disease of said patient,

c) prescribing at least one drug and/or gas and at least one kind of device to be used for administrating said drug or gas, based on the determination done in step b),

d) inputting into processing means, data chosen among said drug and/or gas prescribed in step c) and drug particle size obtained with the device prescribed in step c),

e) inputting into the processing means at least one patient characteristics of the said patient,

f) inputting into processing means at least one morphology and/or ventilatory condition of said patient,

g) running a code in said processing means using the input data and conditions of step d), e) and f), thereby calculating a flow and/or deposition characteristics customized to said patient.

2. A method according to claim 1, comprising a step of targeting the pulmonary region (P) to enhance drug deposition in alveolated airways for uptake by blood for delivery to non-lung sites, in the case where the disease is a non-respiratory disease.

3. A method according to claim 1, comprising a step of targeting sites in the tracheo bronchial tree (TB) and/or in the pulmonary region (P) to enhance drug deposition in the airways, in the case where the disease is a respiratory disease.

4. A method according to claim 1, wherein the determination of the kind of disease in step b) is done by a physician.

5. A method according to claim 1, wherein, in step b), the kind of respiratory disease is chosen among asthma, emphysema, chronic obstructive pulmonary disease (COPD), cystic fibrosis and cancer.

6. A method according to claim 1, wherein, in step b), the kind of non-respiratory disease is chosen among diabetes, neurological disorders and influenza.

7. A method according to claim 1, wherein, in step c), the drug is chosen among broncho-dilatators, steroids, antibiotics, insulin, proteins, chemotherapies or gene therapies.

8. A method according to claim 1, wherein, in step c), the device is an metered dose inhaler (MDI), a dry powder inhaler (DPI), a nebulizer or a ventilator.

9. A method according to claim 1, wherein the processing means comprise a computer having at least one microprocessor for processing data, in particular for performing calculations and/or obtaining information and/or storing data and/or displaying results.

10. A method according to claim 1, wherein, the customized flow and/or deposition characteristics calculated in step g) are displayed electronically on a screen, in particular a computer monitor or similar.

11. A method according to claim 1, wherein the input of data of steps d), e) and/or f) is operated by means of a graphic user interface (GUI), and access to the GUI is accomplished via a keyboard and/or a mouse.

12. A method according to claim 1, wherein, in step g), the code comprises algorithms translating algebraic formulas describing the physics of aerosol kinetics and fluid motion in human respiratory systems for various ventilatory conditions.

13. A method according to claim 1, wherein customized flow and deposition characteristics calculated in step g) in various formats are displayed comprising total deposition in lungs, compartmental deposition within the TB tree and P region, localized deposition on a generation by generation basis, and/or mass (micrograms)-deposition on a per unit surface area basis, pressure drops on a generation by generation basis, mean velocity on a generation by generation basis.

14. A medical device for establishing and/or designing and/or customizing the treatment by inhalation of a patient suffering from a respiratory or non-respiratory disease comprising:

input/output means interactive with the processing means;

for inputting into processing means;

data chosen among a prescribed drug and/or gas and a drug particle size obtained with a prescribed inhalation device,

at least one patient characteristics and

at least one morphology and/or ventilatory condition of said patient,

and for outputting customized flow and/or deposition characteristics,

storing means for storing a code comprising a digital memory that is adapted to store algorithms translating algebraic formulas describing the physics of aerosol kinetics and fluid motion in human respiratory systems for various ventilatory conditions,

processing means cooperating with the storing means and the input means for running the code stored by the storing means and using the input data, and

displaying means for displaying customized flow and/or deposition characteristics.

15. A device according to claim 14, wherein the displaying means are a screen, in particular a computer monitor or similar.

16. A device according to claim 14, wherein the storing means for storing the code are chosen among CD-Rom, DVD-Rom, USB sticks and computer hard drives.

17. A method for designing the exposure by inhalation of a laboratory test animal used as a human surrogate in pharmacological and/or toxicological experiments, comprising the steps of:

h) presenting a selected laboratory test animal that is chosen to mimic a given human disease,

i) choosing at least one drug and/or gas to be inhaled by the test animal based on the selection done in step i),

j) choosing a device to be used for the inhalation by the test animal of the drug and/or gas chosen in step i),

k) determine operating conditions for the device chosen in step j) so that gas and/or particles of chosen sizes are produced so as to selectively deposit in the test animal;

l) inputting into processing means, data chosen among said gas and/or drug to be tested chosen in step i) and the drug particle size determined in step k),

m) inputting the morphology of the test animal,

n) inputting into processing means at least one ventilatory condition of said test animal,

o) running a code in said processing means using the input data and condition of step l), m) and n), thereby calculating a flow and/or deposition characteristics customized to said test animal.

18. A method according to claim 17, wherein the test animal is chosen among rats, mice, guinea pigs, hamsters, dogs, donkeys, cats, swine and monkeys.

19. A method for designing the exposure by inhalation of a human volunteer in toxicological experiments, comprising the steps of:

p) presenting a human volunteer,

q) choosing at least one substance to be inhaled by the human volunteer,

r) choosing a device to be used for the inhalation by the human volunteer of the substance chosen in step q),

s) determine operating conditions for the device chosen in step r) so that gas and/or particles of chosen sizes are selectively deposit in the human volunteer,

t) inputting into processing means, data chosen among said substance to be tested chosen in step t) and the substance particle size determined in step s),

u) inputting into the processing means at least one human volunteer characteristics,

v) inputting into processing means at least one morphology and/or ventilatory condition of said human volunteer,

w) running a code in said processing means using the input data and condition of step t), u) and v), thereby calculating a flow and/or deposition characteristics customized to said human volunteer.