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Philips AF541 Under-the-Nose NIV mask Cushion SelfiMed UKBrand new
Brand
Philips Leeds, United Kingdom
  • UK stock, dispatched from Leeds
All products / CPAP Mask Cushion

Respironics AF541 Under-the-Nose NIV Mask Cushion

PhilipsSKU DRE4066M
Price
£1499

Price shown excludes VAT.

VAT relief available on this product

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Size Size B
Quantity
Unit price£14.99
Total£14.99

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Frequently bought together

Add the whole set in one go.

Respironics AF541 Under-the-Nose NIV Mask Cushion £14.99 This item
Philips Respironics DreamStation Heated Humidifier DSXH with Water Chamber £159.99
Total for the set £0.00

Key attributes
Brand
Philips
Category
CPAP Mask Cushion
SKU
DRE4066M
Options
4 to choose from

Philips Respironics AF541 Under-the-Nose NIV Mask Cushion, Sizes XS, A, B and C

This is the under-the-nose NIV Mask cushion for the Philips Respironics AF541 non-invasive ventilation mask. It seals beneath the nostrils and around the mouth instead of across the bridge of the nose, which is how the AF541 offloads pressure from the site where NIV skin breakdown most often starts.

Supplied new in extra small, A, B and C. The cushion pushes straight onto the AF541 mask frame and is interchangeable with the over-the-nose cushion on the same mask, so a patient can be rotated between the two seals without changing mask system. The mask, elbow and headgear are ordered separately.

Check before the mask is used on a patient

  • The circuit safety arrangement is set by the elbow, not by this cushion. Entrainment elbows carry an anti-asphyxia valve and are used with single limb circuits on dedicated non-invasive ventilators. The standard elbow is used on ventilators with an integrated safety valve system and dual limb circuits. Confirm the elbow matches the ventilator and circuit before a patient is connected.
  • The cushion sits under the nose and never over it. The bottom edge rests just above the chin with the mouth slightly open.
  • Size with the manufacturer's sizing gauge. Under-the-nose sizes are extra small, A, B and C, and do not correspond to the over-the-nose sizes of small to extra large, so a patient changing seal type is re-sized.
  • The AF541 is intended for patients above 20 kg and is a single patient use device, reapplied to the same patient over a short period and then discarded.
  • Under-the-nose sealing moves contact onto the upper lip, cheeks and chin. Those sites are inspected on the schedule the nasal bridge would have had, because the pressure is redistributed rather than removed.

Why the seal moves off the nasal bridge

Facial pressure injury is the most common complication of non-invasive ventilation, and the nasal bridge is where it happens. The skin there is thin and sits directly over bone, a conventional oro-nasal mask places its firmest seal exactly across it, and every leak invites another turn on the headgear. In a patient who cannot reposition themselves and needs continuous ventilation, damage can appear within a day, at which point the options narrow: the patient still needs ventilating and the mask still needs to seal.

The under-the-nose cushion changes where the load sits. It closes below the nostrils and around the mouth, leaving the bridge uncovered, and Philips makes the two cushion types interchangeable on the same mask frame precisely so they can be alternated. Rotating between seals offloads and redistributes pressure, which is the recognised way to reduce skin breakdown over a long period of ventilation, and it means a unit does not have to stock two mask systems to do it. The clearer field of view is a secondary benefit that matters more than it sounds for a conscious, frightened patient.

Two limits are worth stating. This is a cushion, not a mask: it fits the AF541 frame and nothing else, so a department without AF541 masks in stock cannot use it. And it is not an answer to skin damage on its own. Pressure moves to the upper lip, cheeks and chin, so inspection continues at the new contact points, and where a bridge lesion already exists the cushion is one part of a plan alongside dressings, rotation and time off the mask.

Key features

Seals below the nostrils, leaving the nasal bridge uncovered, which removes contact from the site where NIV pressure injury most commonly begins.
Interchangeable with the over-the-nose cushion on the same AF541 frame, so contact points can be rotated through a long period of ventilation without introducing a second mask system.
Pushes straight onto the mask frame, held by the sides and pressed home, so a cushion change at the bedside takes seconds and needs no tools.
Four sizes, extra small, A, B and C, fitted with the manufacturer's sizing gauge rather than by eye.
Clear field of vision, with nothing across the eyes or upper face, which helps a conscious and often anxious patient tolerate the mask for the hours that decide whether NIV succeeds.
Serves the full AF541 elbow range, so the same cushion works on a single limb circuit with a dedicated NIV ventilator or a dual limb circuit on a ventilator with an integrated safety valve, according to the elbow fitted.

Matching the elbow to the circuit

Elbow Used with
Entrainment elbow, Leak 1 Anti-asphyxia valve, for dedicated non-invasive ventilators on single limb circuits
Entrainment elbow, Leak 2 Anti-asphyxia valve with intentional leak ports, for dedicated non-invasive ventilators on single limb circuits
Standard elbow Ventilators with an integrated safety valve system, on dual limb circuits
Bronchoscopy elbow Airway access during bronchoscopy, on masks using the click-style 22 mm elbow design

All AF541 click-style elbows include a nebulising port. Elbows are ordered separately and are not supplied with this cushion.

Specification limited to what is confirmed

  • The manufacturer reference for each size is confirmed against the packaging before dispatch. Distributor catalogue numbers are not the same as the Philips reference and are not published in their place.
  • Manufacturer literature describes the CleanClip system as storage for the mask or the cushion not currently in use, with under-the-nose cushions catalogued as supplied with a Clean Clip sidecar. The stock held here carries moulded retention features and no separate clip, so no CleanClip claim is made in this listing.
  • Sizing figures are not published. Fitting is done with the manufacturer's AF541 sizing gauge.
  • Cleaning, reprocessing and the maximum period of use are set out in the AF541 instructions for use and are confirmed on request.

Fitting sequence

Size first, with the gauge. Guessing a size on a ventilated patient produces leak, leak produces tightening, and tightening produces the skin damage the cushion exists to prevent.
Assemble, then place from the crown. Push the cushion onto the mask frame, attach the headgear, place it over the crown of the head, then tilt the mask down onto the face rather than pushing it up from the chin.
Check the landmark. The bottom of the cushion rests just above the chin with the mouth slightly open, and the cushion sits under the nose, never over it.
Adjust in pairs. Facing the patient, adjust both top straps together, then both bottom straps, then the crown strap. Use the forehead adjuster to manage leak before reaching for more strap tension.
Reassess. With the patient at about 45 degrees, continue ventilation and keep checking comfort and the skin at the contact points.

Handling and care

Task When
Inspect the cushion for splits, hardening or distortion before fitting Every use
Inspect the skin at the upper lip, cheeks and chin To local pressure ulcer prevention policy
Rotate between under-the-nose and over-the-nose seals to redistribute pressure To the clinical plan for the patient
Clean or reprocess strictly to the AF541 instructions for use To local decontamination policy
Discard the cushion At the end of that patient's use, or sooner if damaged. Single patient use

Cleaning, reprocessing and use limits follow the manufacturer's instructions for use and the receiving organisation's decontamination policy.

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