Respiratory mask having gas washout vent and method for making the mask
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61M-016/06
A62B-018/02
A61M-016/08
출원번호
US-0793001
(2006-01-12)
등록번호
US-8967146
(2015-03-03)
국제출원번호
PCT/AU2006/000036
(2006-01-12)
§371/§102 date
20100317
(20100317)
국제공개번호
WO2006/074516
(2006-07-20)
발명자
/ 주소
Veliss, Lee James
Stallard, Philip Thomas
출원인 / 주소
ResMed Limited
대리인 / 주소
Nixon & Vanderhye P.C.
인용정보
피인용 횟수 :
0인용 특허 :
12
초록▼
A washout vent for a mask for use with a system for supplying breathable gas pressurized above atmospheric pressure to an airway of a mammal. The washout vent includes a vent orifice adapted for gas washout. The orifice includes one or more features that contribute to noise reduction, such as a chan
A washout vent for a mask for use with a system for supplying breathable gas pressurized above atmospheric pressure to an airway of a mammal. The washout vent includes a vent orifice adapted for gas washout. The orifice includes one or more features that contribute to noise reduction, such as a channel with converging walls towards atmosphere, and/or a channel having one or more walls provided with surface treatment and/or contouring, such as roughening and/or scalloped portions.
대표청구항▼
1. A vent assembly for washout of gas from a mask used with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal patient, said vent assembly comprising: a solid section; andan elongated, curvilinear orifice formed in the solid section and in fluid communi
1. A vent assembly for washout of gas from a mask used with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal patient, said vent assembly comprising: a solid section; andan elongated, curvilinear orifice formed in the solid section and in fluid communication with an interior of the mask, the vent orifice including opposed walls providing a flow passage that allows gas to flow along the opposed side walls from the interior of the mask to atmosphere in use,wherein the side walls have a surface treatment comprising a roughened surface. 2. A vent assembly as in claim 1 wherein the solid section is a peninsula section of the mask. 3. A vent assembly as in claim 1 wherein the solid section is a peninsula section of the vent assembly. 4. A vent assembly as in claim 1 wherein the vent assembly comprises an insert formed from an elastomeric material and said insert is attachable to the mask. 5. A vent assembly as in claim 4 wherein the insert is substantially crescent-shaped and includes a plurality of orifices through the insert. 6. A vent assembly as in claim 1 wherein the orifice has a shape selected from a group consisting of a horse-shoe, crescent, a semi-circle and a curvilinear slot. 7. A vent assembly as in claim 1 wherein the side walls have contouring. 8. A vent as in claim 7 wherein the surface contouring comprises scalloping. 9. A vent as in claim 8 wherein the scalloping comprises scalloped sections aligned orthogonally to the orifice. 10. A vent assembly as in claim 1, wherein the opposed side walls have surfaces shaped and/or treated to increase turbulence of gas exhausting from the interior of the mask to atmosphere. 11. A vent assembly as in claim 10, wherein the surfaces comprise scalloping with crenated edges at an orifice exit of the orifice. 12. A vent assembly for washout of gas from a mask used with a system for supplying breathable gas pressurized above atmospheric pressure to a human or animal patient, said vent assembly comprising: an orifice in fluid communication with an interior of the mask, anda channel between the orifice and an interior section of the mask, wherein the channel has scalloping along a sidewall and said sidewall has crenated edges at an outlet of the channel,wherein the channel provides a flow passage that allows gas to flow along the sidewall from the interior section of the mask to atmosphere in use. 13. A vent assembly as in claim 12 wherein the scalloping comprises scalloped sections aligned orthogonally to the orifice. 14. A vent assembly as in claim 12, wherein the orifice includes an elongated, curvilinear shape. 15. A washout vent for a mask for use with a system for supplying breathable gas pressurized above atmospheric pressure to an airway of a mammal for treatment of sleep disordered breathing, the washout vent comprising: a solid section; anda vent orifice formed in the solid section and adapted for gas washout while reducing noise, said orifice including opposed edges or side walls providing a flow passage that allows gas to flow along the opposed edges or side walls from an interior of the mask to atmosphere in use; anda channel between an orifice exit of the vent orifice and an interior surface of the mask,wherein the orifice has a curved configuration including a diameter in the range of 4-20mm extending through an arc in the range of 130-150 degrees, andwherein the channel includes a width in the range of 0.5-1.0 mm, a depth in the range of 2.5-3.5mm, an inlet radius in the range of 1-2 mm, and a draft angle in the range of 3-7 degrees. 16. A washout vent as claimed in claim 15, wherein the orifice includes a diameter of 7.7 mm extending through a 142° arc, and the channel includes a width of 0.85 mm, a depth of 3 mm, an inlet radius of 1.5 mm, and a draft angle of 6° . 17. A mask assembly including a mask frame and at least one washout vent according to claim 15 provided to the mask frame. 18. The mask assembly according to claim 17, wherein two washout vents are provided to the mask frame. 19. A vent assembly as in claim 15, wherein the opposed edges or side walls have surfaces shaped and/or treated to increase turbulence of gas exhausting from the interior of the mask to atmosphere. 20. A vent assembly as in claim 19, wherein the surfaces comprise scalloping with crenated edges at the orifice exit of the orifice.
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이 특허에 인용된 특허 (12)
Gunaratnam, Michael K.; Drew, Joanne E.; Crumblin, Geoffrey; Jenkinson, Phillip; Lynch, Susan R., Connector for a respiratory mask and a respiratory mask.
Berthon-Jones Michael (Leonay AUX) Calluaud Michel (Hunters Hill AUX) Lynch Christopher E. (Turramurra AUX) Hely Kenneth F. (Jannali AUX), Facial masks for assisted respiration or CPAP.
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