CA2646482A1 - Patient oxygen delivery mask - Google Patents

Patient oxygen delivery mask Download PDF

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Publication number
CA2646482A1
CA2646482A1 CA002646482A CA2646482A CA2646482A1 CA 2646482 A1 CA2646482 A1 CA 2646482A1 CA 002646482 A CA002646482 A CA 002646482A CA 2646482 A CA2646482 A CA 2646482A CA 2646482 A1 CA2646482 A1 CA 2646482A1
Authority
CA
Canada
Prior art keywords
mask
patient
gas
face
diffuser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002646482A
Other languages
French (fr)
Other versions
CA2646482C (en
Inventor
Julius Hajgato
Lee Mcdonald
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Southmedic Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2646482A1 publication Critical patent/CA2646482A1/en
Application granted granted Critical
Publication of CA2646482C publication Critical patent/CA2646482C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0611—Means for improving the adaptation of the mask to the patient with a gusset portion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A61M16/0841—Joints or connectors for sampling
    • A61M16/085—Gas sampling
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2202/00—Special media to be introduced, removed or treated
    • A61M2202/02—Gases
    • A61M2202/0208—Oxygen
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2230/00—Measuring parameters of the user
    • A61M2230/40—Respiratory characteristics
    • A61M2230/43—Composition of exhalation
    • A61M2230/432—Composition of exhalation partial CO2 pressure (P-CO2)

Abstract

A mask for delivery of oxygen to a patient, includes a body having a rim to sit comfortably on a patient's face, a central portion, and webs extending between the central portion and the peripheral portion and integral therewith. The webs define open areas that make up at least 30% of the mask body. The central portion includes a gas diffuser shaped to direct a turbulent gas plume over the patient's nose and mouth. The dimensions of the diffuser permit formation of a suitable gas plume over a range of oxygen delivery rates.

Claims (24)

1. A facial mask for delivery of a gas to the nose and mouth region of a patient, comprising an at least partially rigid mask body having a rim for contacting the patient's face substantially covering the nose and mouth of the patient, means to engage the mask to a patient so as to maintain contact between the user's face and said rim, a central portion, a connection to a supply of gas, a generally central gas nozzle opening into the interior of said mask at said central portion operatively connected to said gas connection, a diffuser at least partly surrounding said nozzle and fastened to and supported by said mask body at a position spaced apart from and not contacting the user's face, said diffuser including a tubular wall structure extending from said central portion towards said patient's face, and a gas flow disrupter between said nozzle and said user's face so as to generate a turbulent plume of said gas substantially at a non-oblique angle towards the user's nose and mouth, said mask body further comprising an array of elongate webs between said rim and said central portion, said webs defining a plurality of openings therebetween within said body to permit access to the user's face from the outside of said mask, said openings comprising at least 30% of the surface area of said mask.
2. A mask according to claim 1 in combination with an oxygen delivery tube releasably securable to the outer surface of the central portion of the mask so as to communicate with the gas connection.
3. A mask as defined in claim 1 wherein said gas flow disrupter comprises a baffle having a stem mounted adjacent to said nozzle and a head having a curved surface facing said nozzle for generating turbulence within said gas flow.
4. A mask as defined in claim 3 wherein said head includes a curled back conical lip facing said nozzle.
5. A mask as defined in claim 3 wherein said stem includes a passageway open to the interior of said mask body and communicating with the exterior of said mask for permitting measurement of exhaled gas from within said mask body.
6. A mask according to claim 1 wherein said tubular wall structure is generally cup-shaped, the wall thereof ending in a free edge contoured so as to conform, when the mask is in position on a patient, generally to the shape of a patient's nose and mouth area but spaced apart therefrom when in use.
7. A mask as defined in claim 1 wherein said tubular structure has a maximum top to bottom distance when said mask is vertical of 40 mm above and below said nozzle and a maximum side to side distance of 20 mm on either side of said nozzle, when said mask is positioned in an upright position.
8. A mask as defined in claim 1, wherein said diffuser is positioned so as to maintain a spacing of between 12 and 40 mm between said diffuser and said user's face as measured from the skin surface between nose and mouth.
9. A mask as defined in claim 1, wherein said openings comprise between 50 and 75 per cent of the total surface area of said body.
10. A mask as defined in claim 1, wherein said diffuser is positioned so as to be centered over a point about halfway between the user's nose and upper lip.
11. A mask as defined in claim 1, wherein at least one of said openings provides access from the mask exterior to the user's nostrils.
12. A facial mask for delivery of a gas to the nose and mouth region of a patient, comprising an at least partially rigid mask body having a rim for contacting the patient's face substantially covering the nose and mouth of the patient, said mask body having a generally open structure having a plurality of openings permitting communication between the interior and exterior of said mask, fastening means to engage the mask to a patient so as to maintain contact between the user's face and said rim, a connection to a supply of gas, a gas nozzle opening into the interior of said mask operatively connected to said gas connection, a diffuser at least partly surrounding said nozzle and fastened to and supported by said mask body at a position spaced apart from and not contacting the user's face, said diffuser being positioned generally centrally within said mask and including a gas outlet nozzle, a gas flow disrupter between said nozzle and said user's face so as to generate a turbulent plume of said gas substantially at a non-oblique angle towards the user's nose and mouth and a peripheral flange surrounding said nozzle, said diffuser being positioned within said mask so as to fit entirely within a space defined in relation to a point on the user's face about halfway between the base of the nose and uppermost edge of upper lip, said space defined in the vertical plane as 40 mm above and below said point, 20 mm on either side of said point and horizontally spaced apart from said point by between 12 and 40 mm when said user is upright.
13. A mask as defined in claim 12, wherein said openings comprise between 30 and 80 per cent of the total surface area of said body, said surface area comprising open and covered areas.
14. A mask as defined in claim 13, wherein said openings comprise between 60 and 75 per cent of the total surface area of said body.
15. A mask as defined in claim 12, further comprising a sensor for monitoring exhaled gases within the interior of said mask.
16. A mask for delivery of gas to the nose and mouth region of a patient, comprising a concave mask body defined by a central portion (16), a rim (6) for contacting the patient's face around the nose and mouth region of the patient and at least one web (102, 110, 112) joining said central portion to said rim, said mask further comprising a central inlet (116) extending through said central portion for receiving a gas delivery conduit, a gas diffuser (34) protruding from said central portion surrounding said inlet, and a baffle (52) positioned over said inlet for obstructing the flow of gas exiting said inlet, characterized by:
said at least one web comprising an array of narrow bridges (102, 110,112) radiating outwardly from said central portion between said central portion and said rim so as to define openings between said bridges, said bridges including first and second lateral bridges (102) extending laterally outwardly from said central portion on opposing sides thereof in a generally horizontal direction when said mask is upright;
said baffle (52) having a generally mushroom-shaped configuration for cooperating with said lateral bridges (102) to generate a turbulent plume of gas within the interior of said mask; and said diffuser positioned opposed to said patient's nose and mouth and comprising a wall (34) protruding inwardly towards said patient from said central portion by at least about 13 mm.
17. A face mask as defined in claim 16 further comprising at least one downwardly extending bridge (110) extending between said central portion and said rim, wherein an opening (106) is defined within said mask body between said lateral bridges and said at least one downwardly extending bridge.
18. A face mask as defined in claim 16 wherein said lateral bridges each have a narrowed generally central waist.
19. A face mask as defined in claim 16 wherein said diffuser protrudes inwardly from said central web by between about 13 mm and 20 mm.
20. A face mask as defined in claim 16 further comprising at least one stiffening rib (120) protruding inwardly from at least one of said bridges, joining with said diffuser.
21. A face mask as defined in claim 16 further comprising an elbow-shaped connector (42) engaged to said inlet (116), for providing a passageway for delivery of said gas into the interior of said mask body.
22. A face mask as defined in claim 16 configured to deliver an FI02 concentration to a patient within a range of 21% to 90%, by controlling the flow of O2 to said diffuser within a range of 1.5 LPM and 15 LPM.
23. A face mask as defined in claim 16 configured to deliver an FIO2 concentration to patient within a range of about 21% to about 92%, by controlling the flow of O2 to said diffuser within a range of 1.5 LPM and 40 LPM.
24. A face mask as defined in claim 23 configured to deliver an FI02 concentration to patient within a range of about 21% to about 92%, by controlling the flow of O2 to said diffuser within a range of 1.5 LPM and 30 LPM.
CA2646482A 2006-05-04 2007-04-19 Patient oxygen delivery mask Active CA2646482C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US11/417,988 US8042540B2 (en) 2004-10-15 2006-05-04 Patient oxygen delivery mask
US11/417,988 2006-05-04
PCT/CA2007/000653 WO2007128100A1 (en) 2006-05-04 2007-04-19 Patient oxygen delivery mask

Publications (2)

Publication Number Publication Date
CA2646482A1 true CA2646482A1 (en) 2007-11-15
CA2646482C CA2646482C (en) 2012-07-03

Family

ID=38667359

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2646482A Active CA2646482C (en) 2006-05-04 2007-04-19 Patient oxygen delivery mask

Country Status (7)

Country Link
US (1) US8042540B2 (en)
EP (1) EP2015815A4 (en)
CN (1) CN101437565B (en)
AU (1) AU2007247797B2 (en)
CA (1) CA2646482C (en)
HK (1) HK1127569A1 (en)
WO (1) WO2007128100A1 (en)

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Also Published As

Publication number Publication date
CA2646482C (en) 2012-07-03
AU2007247797B2 (en) 2013-07-18
CN101437565A (en) 2009-05-20
HK1127569A1 (en) 2009-10-02
US20060196510A1 (en) 2006-09-07
EP2015815A1 (en) 2009-01-21
CN101437565B (en) 2012-11-28
WO2007128100A1 (en) 2007-11-15
AU2007247797A1 (en) 2007-11-15
US8042540B2 (en) 2011-10-25
EP2015815A4 (en) 2011-01-26

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