The Viscoflex Evolutive is a very high-risk static mattress using an 80kg/m³ viscoelastic memory foam top layer over precision-zoned multi-density foam inserts for targeted pressure redistribution at critical anatomical sites. The HR foam base provides structural support within the 130kg SWL limit. The 4-way stretch VP welded PU cover meets NHS IPC decontamination requirements. Dimensions are 1970 x 860 x 140mm - slightly smaller than the standard UK profile; bed frame compatibility must be confirmed before deployment. SWL 130kg; this limit must be verified before clinical issue.
| Specification | Detail |
|---|---|
| Top Layer | 80kg/m3 viscoelastic memory foam |
| Internal Construction | Zoned multi-density foam inserts |
| Base | High-resilience foam |
| Cover | 4-way stretch VP PU - water resistant, welded seams |
| Dimensions | 1970 x 860 x 140mm |
| Safe Working Load | 130kg (20 stone) - verify before deployment |
| Reference | NCL-P161MFEPMHF |
| Clinical Risk Level | Very high risk per NICE CG179 |
The Viscoflex Evolutive is a Class I passive medical device under Medical Devices Regulation 2017/745. Clinical selection requires validated pressure risk assessment per NICE CG179 confirming very high-risk status. The SWL of 130kg is a hard limit that must be verified against the resident's documented weight before deployment per MHOR 1992; this mattress must not be used for residents above 130kg. The 1970 x 860mm footprint is smaller than the standard UK 2000 x 900mm; the bed frame and mattress dimensions must be confirmed compatible before procurement. Equipment register records, SWL verification, and MDR conformity documentation must be maintained for CQC Regulation 12 compliance.
Why does the Viscoflex Evolutive have a lower SWL than other very high-risk mattresses in this range, and what happens if a heavier resident is placed on it?
The SWL of 130kg reflects the foam construction and density specification of the Viscoflex Evolutive: the 80kg/m³ visco top layer and the zoned foam inserts are calibrated to provide optimal pressure redistribution and immersion at loads up to 130kg. Above this load, the foam begins to exceed its designed compression range and may bottom out, reducing the pressure redistribution effectiveness and placing the resident's bony prominences at risk of contact with the mattress base. The HR foam base prevents contact with the bed frame within the SWL range, but this protection is not guaranteed above the rated limit. The consequences of exceeding SWL include: reduced clinical effectiveness of the pressure redistribution; increased risk of foam permanent compression set that reduces performance over time; and, at significant overload, potential contact between the resident's body and the bed base through the compressed foam. For residents above 130kg who require very high-risk static pressure care, the Visco MultiZone (177kg SWL) or the Reflect 2 range (up to 381kg SWL) must be selected instead.
Why is the Viscoflex Evolutive slightly smaller than the standard UK mattress size, and how does this affect deployment?
The Viscoflex Evolutive dimensions of 1970 x 860mm are consistent with European standard mattress sizing rather than the UK standard of 2000 x 900mm. The difference of 30mm in length and 40mm in width is clinically relevant for bed frame compatibility. UK profiling beds are typically designed around the 2000 x 900mm mattress footprint; a mattress 30mm shorter and 40mm narrower will leave visible gaps between the mattress edges and the bed frame side rails and foot end. A gap at the foot end may create a foot entrapment risk for residents whose feet reach the lower part of the mattress. Lateral gaps may allow the mattress to shift position during use. Before deploying the Viscoflex Evolutive, the care team must confirm that the gaps between the mattress and the bed rail are within the safe limits specified by MHRA bed rail entrapment guidance, and that the mattress is secured in the bed frame without movement during use. If the bed frame dimensions create unacceptable entrapment risk with the Evolutive, an alternative mattress with standard UK dimensions should be selected.