A dry powder inhaler includes a chamber holding an actuator to which a powdered medicament is adhered. Air is drawn into the chamber through an inlet flow channel and exits through an outlet flow channel. The actuator oscillates in response to the air flow, dislodging powdered medicament to be entra
A dry powder inhaler includes a chamber holding an actuator to which a powdered medicament is adhered. Air is drawn into the chamber through an inlet flow channel and exits through an outlet flow channel. The actuator oscillates in response to the air flow, dislodging powdered medicament to be entrained in the air flow and delivered to the patient. A retaining member prevents the actuator from exiting the chamber. Thus, the medicament may be delivered to the patient without the use of carrier particles.
대표청구항▼
1. A dry powder inhaler, comprising: an inlet channel through which air enters the inhaler;a chamber that receives air from the inlet channel, the chamber containing a single actuator to which a powdered medicament is adhered, wherein the chamber has a longitudinal axis, and wherein the inlet channe
1. A dry powder inhaler, comprising: an inlet channel through which air enters the inhaler;a chamber that receives air from the inlet channel, the chamber containing a single actuator to which a powdered medicament is adhered, wherein the chamber has a longitudinal axis, and wherein the inlet channel is generally co-axial with the longitudinal axis;a retaining member disposed at an end of the chamber opposite the inlet channel, the retaining member having one or more openings sized to permit air and the powdered medicament to pass through the retaining member, and to prevent the actuator from passing through the retaining member; andan outlet channel through which air and the powdered medicament leave the inhaler to be delivered to a patient, wherein the outlet channel is generally co-axial with the longitudinal axis of the chamber;wherein the geometry of the inhaler is such that a flow profile is generated within the chamber that causes the single actuator to repeatedly oscillate generally co-axially with the longitudinal axis, thus, by virtue of the repeated oscillations, detaching the powdered medicament from the surface of the actuator to be entrained by the air and delivered to the patient through the outlet channel. 2. The dry powder inhaler of claim 1, wherein the cross sectional area of the flow path through the inhaler undergoes a step increase at an entrance to the chamber. 3. The dry powder inhaler of claim 2, wherein at the entrance to the chamber a diameter of the chamber is at least 1.5 times a diameter of the inlet channel. 4. The dry powder inhaler of claim 1, wherein the inlet channel comprises a tapered tube. 5. The dry powder inhaler of claim 1, wherein the outlet channel comprises a tube whose cross section changes along the length of the tube. 6. The dry powder inhaler of claim 1, wherein the outlet channel is comprised in a mouthpiece adapted to be placed within the mouth of the patient. 7. The dry powder inhaler of claim 1, wherein the outlet channel is comprised in a nasal adapter adapted to conform to the nostrils of the patient. 8. The dry powder inhaler of claim 1, further comprising one or more bypass channels that receive supplemental air from outside the inhaler and deliver the supplemental air to the patient without the supplemental air having passed through the chamber. 9. The dry powder inhaler of claim 1, wherein the inlet channel is a first inlet channel and the chamber is a first chamber, the dry powder inhaler further comprising a second inlet channel and a second chamber. 10. The dry powder inhaler of claim 9, wherein air and powdered medicament leaving the first and second chambers are delivered to the outlet channel. 11. The dry powder inhaler of claim 9, wherein the outlet channel is a first outlet channel, the dry powder inhaler further comprising a second outlet channel, and wherein air and powdered medicament leaving the first chamber are delivered to the first outlet channel, and air and powdered medicament leaving the second chamber are delivered to the second outlet channel. 12. The dry powder inhaler of claim 9, wherein the first and second chambers are of the same dimensions. 13. The dry powder inhaler of claim 1, wherein the dry powder inhaler is separable to permit insertion of a capsule into the chamber, the capsule containing the actuator. 14. The dry powder inhaler of claim 13, further comprising features for puncturing seals at ends of the capsule: 15. The dry powder inhaler of claim 1, wherein airflow through the inhaler is driven by inspiratory effort of the patient. 16. The dry powder inhaler of claim 1, wherein the actuator is made of expanded polystyrene. 17. The dry powder inhaler of claim 1, wherein the actuator has a density between 0.001 and 0.50 g/cm3. 18. The dry powder inhaler of claim 1, wherein the actuator has a diameter of at least 1000 microns. 19. The dry powder inhaler of claim 1, wherein the actuator has a diameter between 1000 and 6000 microns. 20. The dry powder inhaler of claim 1, wherein the actuator has a mass of between 0.1 and 5.0 milligrams. 21. The dry powder inhaler of claim 1, wherein the actuator has a mass of between 0.5 and 2.5 milligrams. 22. The dry powder inhaler of claim 1, wherein a combination of medicaments is adhered to the actuator. 23. The dry powder inhaler of claim 1, comprising a plurality of chambers disposed on a rotary element for selectively aligning any of the chambers with the outlet channel. 24. The dry powder inhaler of claim 1, wherein at an entrance to the chamber the diameter of the chamber is between 1.5 and 3.0 times the diameter of the inlet channel to facilitate the creation of a flow pattern within the chamber such that the actuator oscillates at a frequency in the range from 1 Hz to 1000 Hz. 25. A method, comprising: obtaining a dry power inhaler that includes an inlet channel, a chamber, and an outlet channel, wherein the chamber has a longitudinal axis and wherein the inlet is generally co-axial with the longitudinal axis, the chamber holding a single actuator, wherein one or more powdered medicaments are adhered to an outside surface of the actuator; andinhaling through the outlet channel that is generally co-axial with the longitudinal axis, causing air to flow into the inlet channel, through the chamber, and through the outlet channel, the flowing air also causing the actuator to repeatedly oscillate generally co-axially with the longitudinal axis to facilitate dislodgement of powdered medicament from the surface of the actuator to be entrained in the flowing air and carried through the outlet channel. 26. The method of claim 25, further comprising: separating two portions of the inhaler comprising the chamber and the outlet channel;loading the actuator into the chamber; andre-engaging the two portions of the inhaler. 27. The method of claim 25, wherein a combination of powdered medicaments is adhered to the actuator. 28. The method of claim 25, wherein the dry powder inhaler includes at least two chambers that each contain a single actuator having medicament adhered thereto, and wherein the flowing air causes each actuator to oscillate to facilitate dislodgement of powdered medicament to be inhaled. 29. The method of claim 28, wherein the at least two actuators have the same powdered medicament adhered to the actuators. 30. The method of claim 28, wherein the at least two actuators have different powdered medicaments adhered to the actuators. 31. The method of claim 25, wherein the actuator oscillates at a frequency in the range from 1 Hz to 1000 Hz. 32. The method of claim 25, wherein the actuator oscillates at a frequency in the range from 25 Hz to 150 Hz. 33. The method of claim 25, wherein at the entrance to the chamber a diameter of the chamber is between 1.5 and 3.0 times a diameter of the inlet channel. 34. A dry powder inhaler, comprising: an inlet channel through which air enters the inhaler;a chamber that receives air from the inlet channel, the chamber containing a single actuator to which a powdered medicament is adhered, wherein the chamber has a longitudinal axis, and wherein the inlet channel is generally co-axial with the longitudinal axis; andan outlet channel through which air and the powdered medicament leave the inhaler to be delivered to a patient, wherein the outlet channel is generally co-axial with the longitudinal axis;wherein the geometry of the inhaler is such that a flow profile is generated within the chamber that causes the single actuator to repeatedly oscillate generally co-axially with the longitudinal axis, thus, by virtue of the repeated oscillations, detaching the powdered medicament from the surface of the actuator to be entrained by the air and delivered to the patient through the outlet channel.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (127)
Williams David R. (San Diego CA) Mecikalski Mark B. (Tucson AZ) Thueson David O. (Poway CA), Apparatus for aerosolizing powdered medicine and process and using.
Heide Helmut (Kelkheim 2 DEX) Hugemann Bernhard (Frankfurt/M DEX) Pabst Joachim (Reinheim DEX), Device for generating inhalable active substance particles.
Burr John D. ; Smith Adrian E. ; Hall Randy K. ; Snyder Herman ; Schuler Carlos ; Axford George S. ; Ray Charles, Dry powder dispersing apparatus and methods for their use.
Hodson Peter D. (St. Paul MN) Smith David K. (St. Paul MN) Velasquez David J. (St. Paul MN) Wass Anthony C. L. (St. Paul MN), Dry powder inhalation device having a powder-loaded elongate carrier.
Hodson Peter David (Trowell Park GB3) Smith David Keith (Loughborough GB3) Wass Anthony Charles Lammond (Duddington GB3), Dry powder inhalation device having deagglomeration/aerosolization structure responsive to patient inhalation.
Hodson Peter D. ; Smith David K. ; Velasquez David J. ; Wass Anthony C.L. ; Calhoun Clyde D., Dry powder inhalation device with elongate carrier for power.
Michael Ligotke ; Andrew W. Gieschen ; Robert F. Eisele ; Thomas R. Jackson ; Jeffrey Chen ; Bernard Greenspan ; Clyde Witham ; Gary Ward, Dry powder inhaler.
Newhouse Michael T. (436 Queen Street South Hamilton ; Ontario CAX L8N 4A6) Baines W. Douglas (1675 Wedmore Way Mississauga ; Ontario CAX), Dry powder inhaler and process that explosively discharges a dose of powder and gas from a soft plastic pillow.
Crowder, Timothy M.; Hickey, Anthony J.; Warden, Jeffrey A., Dry powder inhalers, related blister devices, and associated methods of dispensing dry powder substances and fabricating blister packages.
Casper Robert A. (Raleigh NC) Leith Frank A. (Chapel Hill NC) Gardner David L. (Chapel Hill NC), Dry powder medicament inhalator having an inhalation-activated flow diverting means for triggering delivery of medicamen.
Casper, Robert A.; Leith, Frank A.; Gardner, David L.; Snow, John M.; Lyon, Zachary W.; Farrar, David S., Dry powder medicament inhalator having an inhalation-activated flow diverting means for triggering delivery of medicament.
Mulhauser Paul (New York NY) Karg Jeffrey (Waldwick NY) Foxen Thomas (Brooklyn NY) Brooks Christopher J. (Glen Head NY), Dry powder medicament inhalator having an inhalation-activated piston to aerosolize dose and deliver same.
Poss Gerhard (Schriesheim DEX) Wittekind Jurgen (Frankfurt am Main DEX), Inhalation device free from propellant gas having brush abrading powder from tablet.
Sun Hoi Cheong Steve ; Singh Bawa ; Rivenburg Howard Christopher ; Datta Pabitra ; Desai Nitin Vithabhi, Inhaler apparatus with an electronic means for enhanced release of dry powders.
Zanen Pieter (Sikkelveld 27 NL-3993 RH Houten NLX) Plomp Adrianus (Hulstweg 70 NL-1871 TJ Schoorl NLX) Boon Gerhardus A. (Haremakers 52 NL-1531 LC Wormer NLX) van Swieten Roy (Kerkstraat 18 NL-5253 A, Inhaler devices provided with a reservoir for several doses of medium for inhaling, transporting device, whirl chamber.
Ambrosio Thomas J. ; Ashley Charles R. ; Bilanin Alan J. ; Huck Charles M. ; Kaufman Andrew E. ; Kenyon David J. ; Manthena Srinivas ; Sochon Henry R. ; Wilkinson Ken ; Yang Tsong-Toh, Inhaler for powdered medications.
Villax Peter (Lisbon PTX) Peres Rui (Cascais PTX) Treneman William Richard (Cambs GB3) McDerment Iain Grierson (Herts GB3) Bunce Martin (London GB3), Medicament inhaler and method.
Casper Robert A. (Raleigh NC) Taylor Malcolm E. (Pelham NH) Leith Frank A. (Chapel Hill NC) Leith David H. (Chapel Hill NC) Boundy Maryanne G. (Chapel Hill NC), Multi-dose dry powder inhalation device.
Jonathan K. Embleton GB; Stephen P. Jones GB; Richard J. Malcolmson GB; Luigi G. Martini GB; Peter J. Houzego GB; Sarah A. Rocca GB; Howard N. Stevens GB, Ocular treatment device.
Kirk William F. (Loughborough GBX) Wass Anthony C. L. (Duddington GBX) Baum Eric A. (Bishops Stortford GBX) Tansey Ian P. (Barrow on Soare Loughborough GBX) Meredith William G. (Rothley GBX), Powder inhalation device.
Gupte Arun R. (Ingelheim DEX) Kladders Heinrich (Ingelheim DEX) Ruthemann Hans D. (Gau-Algesheim DEX) Zierenberg Bernd (Bingen DEX) Auvinen Raimo K. A. (Kuopio FIX) Karttunen Pekka J. (Varkaus FIX) V, Powder inhalation device having nozzle to empty dosing chamber.
Calvert John R. (Dagenham GBX) Cook Robert S. (Dagenham GBX) Hobbs Michael A. (Dagenham GBX) Leighton Ann-Marie (Dagenham GBX) Simpkin Gordon T. (Dagenham GBX) Trunley Roy (Dagenham GBX) West Anthony, Powder inhaler having capsule holding structure and anti-static walls.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.