NZ779012B2 - Air delivery conduit - Google Patents

Air delivery conduit

Info

Publication number
NZ779012B2
NZ779012B2 NZ779012A NZ77901220A NZ779012B2 NZ 779012 B2 NZ779012 B2 NZ 779012B2 NZ 779012 A NZ779012 A NZ 779012A NZ 77901220 A NZ77901220 A NZ 77901220A NZ 779012 B2 NZ779012 B2 NZ 779012B2
Authority
NZ
New Zealand
Prior art keywords
delivery conduit
edge
air delivery
sheet
air
Prior art date
Application number
NZ779012A
Other versions
NZ779012A (en
Inventor
Sok Li Goh
Angelene Marie Ozolins
Beng Hai Tan
Mohankumar Krishnan Valiyambath
Original Assignee
ResMed Asia Pte Ltd
Filing date
Publication date
Priority claimed from SG10202004320UA external-priority patent/SG10202004320UA/en
Application filed by ResMed Asia Pte Ltd filed Critical ResMed Asia Pte Ltd
Priority to NZ799085A priority Critical patent/NZ799085B2/en
Priority claimed from PCT/IB2020/054750 external-priority patent/WO2020234778A1/en
Publication of NZ779012A publication Critical patent/NZ779012A/en
Publication of NZ779012B2 publication Critical patent/NZ779012B2/en

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. ventilators; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0066—Blowers or centrifugal pumps
    • 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. ventilators; Tracheal tubes
    • A61M16/021—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes operated by electrical means
    • A61M16/022—Control means therefor
    • 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. ventilators; 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. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0616—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
    • 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. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0605—Means for improving the adaptation of the mask to the patient
    • A61M16/0616—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure
    • A61M16/0622—Means for improving the adaptation of the mask to the patient with face sealing means comprising a flap or membrane projecting inwards, such that sealing increases with increasing inhalation gas pressure having an underlying cushion
    • 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. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0666—Nasal cannulas or tubing
    • 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. ventilators; Tracheal tubes
    • A61M16/06—Respiratory or anaesthetic masks
    • A61M16/0683—Holding devices therefor
    • 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. ventilators; 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
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0875—Connecting tubes
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1005—Preparation of respiratory gases or vapours with O2 features or with parameter measurement
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/105—Filters
    • A61M16/106—Filters in a path
    • A61M16/107—Filters in a path in the inspiratory path
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A61M16/109—Preparation of respiratory gases or vapours by influencing the temperature the humidifying liquid or the beneficial agent
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/1075—Preparation of respiratory gases or vapours by influencing the temperature
    • A61M16/1095—Preparation of respiratory gases or vapours by influencing the temperature in the connecting tubes
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/12—Preparation of respiratory gases or vapours by mixing different gases
    • A61M16/122—Preparation of respiratory gases or vapours by mixing different gases with dilution
    • A61M16/125—Diluting primary gas with ambient air
    • 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. ventilators; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/14—Preparation of respiratory gases or vapours by mixing different fluids, one of them being in a liquid phase
    • A61M16/16—Devices to humidify the respiration air
    • 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. ventilators; Tracheal tubes
    • A61M16/20—Valves specially adapted to medical respiratory devices
    • A61M16/208—Non-controlled one-way valves, e.g. exhalation, check, pop-off non-rebreathing valves
    • 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. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/0027—Accessories therefor, e.g. sensors, vibrators, negative pressure pressure meter
    • 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. ventilators; Tracheal tubes
    • A61M16/0003—Accessories therefor, e.g. sensors, vibrators, negative pressure
    • A61M2016/003—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter
    • A61M2016/0033—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical
    • A61M2016/0039—Accessories therefor, e.g. sensors, vibrators, negative pressure with a flowmeter electrical in the inspiratory circuit
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3334—Measuring or controlling the flow rate
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3344—Measuring or controlling pressure at the body treatment site
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3368—Temperature
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/36—General characteristics of the apparatus related to heating or cooling
    • A61M2205/3653—General characteristics of the apparatus related to heating or cooling by Joule effect, i.e. electric resistance
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/75—General characteristics of the apparatus with filters
    • A61M2205/7518—General characteristics of the apparatus with filters bacterial
    • 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
    • A61M2207/00—Methods of manufacture, assembly or production
    • 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
    • A61M2207/00—Methods of manufacture, assembly or production
    • A61M2207/10—Device therefor
    • 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
    • A61M2210/00—Anatomical parts of the body
    • A61M2210/06—Head
    • A61M2210/0618—Nose

Abstract

Methods of manufacturing components and devices for providing respiratory pressure therapy, and components manufactured according to the methods. Support structures are provided for the components. In embodiments, the support structures may be rigid rings. Alternatively, resilient materials are applied to components to create resilient reinforcing elements. The devices and components include conduits to deliver flows of pressurised gas to a patient interface, positioning and stabilising structures having headgear tubes with support elements, and patient interfaces including the conduits.

Claims (23)

1. An air delivery conduit configured to convey a flow of air under pressure from a respiratory pressure therapy device to a patient interface for providing respiratory pressure therapy to a patient, the air delivery conduit comprising: a flexible reinforcing structure provided along a length of the air delivery conduit; and an air impermeable covering provided to the reinforcing structure along the length of the air delivery conduit, the covering forming a sealed air path through which the flow of air is able to be conveyed in use, the air impermeable covering comprising: a sealing layer provided to the flexible reinforcing structure; and a sheet wrapped around the reinforcing structure, the sheet comprising a first edge and a second edge each extending along the air delivery conduit, an outer side, and an inner side, the inner side of the sheet comprising: a first portion on a first side of the first edge proximate the first edge; a second portion proximate the first edge, on a second side of the first edge opposite the first side, wherein the sealing layer seals between the first portion of the inner side of the sheet and the second portion of the inner side of the sheet.
2. An air delivery conduit configured to convey a flow of air under pressure from a respiratory pressure therapy device to a patient interface for providing respiratory pressure therapy to a patient, the air delivery conduit comprising: a flexible reinforcing structure provided along a length of the air delivery conduit; a sealing strip applied to the reinforcing structure; and an air impermeable covering wrapped around the reinforcing structure and sealing strip, the covering forming a sealed air path through which the flow of air is able to be conveyed in use, the covering having a first edge and a second edge each extending along the air delivery conduit, the first edge and second edge meeting or overlapping to form a seam, wherein the sealing strip seals across an inner portion of the seam to prevent air leaking through the seam. RMD Ref: P1546NZ1; JAWS Ref: 506238NZ
3. The air delivery conduit of claim 1 or claim 2, wherein the inner side of the sheet proximate the second edge is bonded to the sealing layer.
4. The air delivery conduit of any one of claims 1 to 3, wherein the inner side of the sheet proximate the second edge is bonded to the outer side of the sheet proximate the first edge.
5. The air delivery conduit of any one of claims 1 to 4, wherein the sealing layer is bonded to the reinforcing structure.
6. The air delivery conduit of any one of claims 1 to 5, wherein the sheet is bonded to the sealing layer.
7. The air delivery conduit of any one of claims 1-6, wherein the sealing layer comprises a thermoplastic material.
8. The air delivery conduit of any one of claims 1 to 7, wherein the sealing layer is heat- bonded to the reinforcing structure and/or the sheet.
9. The air delivery conduit of any one of claims 1 to 8, wherein the air delivery conduit comprises an outer strip bonded to the outer side of the sheet over and along the second edge of the sheet.
10. The air delivery conduit of any one of claims 1 to 9, wherein the sheet comprises a laminate.
11. The air delivery conduit of claim 10, wherein the sheet comprises an outer layer comprising a textile material.
12. The air delivery conduit of any one of claims 1 to 11, wherein the sealing layer comprises a sealing strip extending along the length of the air delivery conduit. RMD Ref: P1546NZ1; JAWS Ref: 506238NZ
13. The air delivery conduit of claim 12, wherein the sheet is bonded to the sealing strip, the first edge of the outer side of the sheet lying along the sealing strip proximate a centre line along the sealing strip.
14. The air delivery conduit of any one of claims 1 to 13, wherein the inner side of the sheet proximate the second edge is bonded to the outer side of the sheet proximate the first edge with the second edge spaced from the first edge such that the sheet overlaps with itself.
15. The air delivery conduit of any one of claims 1 to 14, wherein the second edge of the sheet comprises a serrated profile configured to resist peeling of the second edge of the sheet away from the outer side of the sheet.
16. The air delivery conduit of any one of claims 1 to 15, wherein the reinforcing structure comprises a plurality of support structures spaced apart along the length of the air delivery conduit.
17. The air delivery conduit of any one of claims 1 to 16, wherein the air delivery conduit comprises a first end configured to connect to tubing connected to an outlet of the respiratory pressure therapy device, and a second end configured to connect to a patient interface.
18. An air delivery conduit configured to convey a flow of air under pressure from a respiratory pressure therapy device to a patient interface for providing respiratory pressure therapy to a patient, the air delivery conduit comprising: a flexible reinforcing structure provided along a length of the air delivery conduit; and an air impermeable covering provided to the reinforcing structure along the length of the air delivery conduit, the covering forming a sealed air path through which the flow of air is able to be conveyed in use, the air impermeable covering comprising a textile layer and a sealing layer laminated to the textile layer, the covering being wrapped around the reinforcing structure and comprises a first edge and a second edge each extending along the air delivery conduit, an outer side, and an inner side, the inner side of the covering comprising: a first portion on a first side of the first edge proximate the first edge; and a second portion proximate the first edge, on a second side of the first edge opposite the first side, RMD Ref: P1546NZ1; JAWS Ref: 506238NZ wherein a portion of the sealing layer extends beyond an edge of the textile layer at the first edge of the covering to form a sealing flap, the sealing flap being sealed to another portion of the sealing layer to seal between the first portion of the inner side of the covering and the second portion of the inner side of the covering.
19. The air delivery conduit of claim 18, wherein the sealing flap is sealed to both an outer side of the textile layer proximate the first edge of the covering, and an inner side of the sealing layer.
20. The air delivery conduit of clam 19, the sealing flap is sealed to an inner side of the sealing layer on the second side of the first edge of the outer sheet.
21. The air delivery conduit of any of claims 18 to 20, wherein the sealing layer is bonded to the reinforcing structure.
22. The air delivery conduit of any one of claims 18 to 21, wherein the air delivery conduit comprises an outer strip bonded to the outer side of the textile layer over and along the second edge of the textile layer.
23. The air delivery conduit of any one of claims 18 to 22, wherein the second edge of the covering comprises a serrated profile configured to resist peeling of the second edge of the covering away from the outer side of the covering.
NZ779012A 2020-05-20 Air delivery conduit NZ779012B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ799085A NZ799085B2 (en) 2020-05-20 Air Delivery Conduit

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AU2019901704A AU2019901704A0 (en) 2019-05-20 Air Delivery Conduit
AU2019902721A AU2019902721A0 (en) 2019-07-30 Air delivery conduit
SG10202004320UA SG10202004320UA (en) 2020-05-11 2020-05-11 Air delivery conduits and methods of manufacture
PCT/IB2020/054750 WO2020234778A1 (en) 2019-05-20 2020-05-20 Air delivery conduit

Publications (2)

Publication Number Publication Date
NZ779012A NZ779012A (en) 2025-10-31
NZ779012B2 true NZ779012B2 (en) 2026-02-03

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