Duoform Cushion - Anatomically Moulded Gel & Foam Pressure Relief.
- Two-Part Gel System - Fluid Gel and Viscoelastic Gel - the Duoform uses two distinct gel materials in a single cushion top layer: a white fluid gel at the high-risk contact zones (ischial tuberosities and sacral area) that redistributes pressure through active fluid flow under load, and a blue viscoelastic gel at the surrounding zones that resists fluid migration and prevents the white gel from displacing excessively during seated loading; the white fluid gel targets the highest-pressure sites with the greatest pressure redistribution capacity, while the blue visco gel maintains the structural containment and support of the gel system as a whole.
- Anatomically Moulded HR Foam Base - the high-resilience foam base of the Duoform is anatomically moulded to the posterior seated anatomy, incorporating contours that correspond to the bony landmarks of the ischial tuberosities and the surrounding soft tissue zones; the moulded base increases the contact area between the foam surface and the seated anatomy more than a flat base can achieve, and positions the gel layer at the correct anatomical zones relative to the resident's seated position when the cushion is correctly oriented in the seat.
- Four Sizes with SWLs from 110kg to 160kg - NCL-P341C42421HF (420x420x80mm, SWL 110kg); NCL-P341C45421HF (450x420x80mm, SWL 120kg); NCL-P341C45461HF (450x460x80mm, SWL 120kg); NCL-P341C51461HF (510x460x80mm, SWL 160kg); the correct size is selected based on the resident's weight relative to the SWL and the seat pan dimensions; the largest variant at 510x460mm and 160kg SWL accommodates heavier residents within the medium-to-high risk range.
- Welded Breathable Cover - Pairs with Prime Comfort Plus - MDR Class I - the four-way stretch welded highly breathable cover maintains airflow across the gel surface during seated use; pairs with the Prime Comfort Plus mattress (NCL-HSMPRIM) for 24-hour pressure care; medium-to-high risk indication per NICE CG179; MDR 2017/745 Class I medical device; selected following occupational therapist assessment; SWL verified per MHOR 1992 before issue.
Duoform Cushion - 2-Part Gel on Anatomical Moulded Foam - 4 Sizes - SWL 110-160kg - Medium-High Risk
The Duoform Cushion provides medium-to-high-risk seated pressure redistribution using a two-part gel system using white fluid gel for active redistribution at high-pressure contact zones and blue viscoelastic gel for structural containment, on an anatomically moulded high-resilience foam base. Four sizes with SWLs from 110kg to 160kg. Welded breathable four-way stretch cover. Pairs with Prime Comfort Plus mattress for 24-hour care. MDR 2017/745 Class I medical device.
Specifications
| Specification | Detail |
|---|---|
| NCL-P341C42421HF | 420 x 420 x 80mm - SWL 110kg (17 stone) |
| NCL-P341C45421HF | 450 x 420 x 80mm - SWL 120kg (18 stone) |
| NCL-P341C45461HF | 450 x 460 x 80mm - SWL 120kg (18 stone) |
| NCL-P341C51461HF | 510 x 460 x 80mm - SWL 160kg (25 stone) |
| Top Layer | 2-part gel: white fluid gel at high-risk zones + blue viscoelastic gel |
| Base | Anatomically moulded high-resilience foam |
| Cover | 4-way stretch welded highly breathable |
| Paired Mattress | Prime Comfort Plus (NCL-HSMPRIM) |
| Clinical Risk Level | Medium-high risk per NICE CG179 |
| Regulatory Status | MDR 2017/745 Class I medical device |
Regulatory Compliance
The Duoform Cushion is a Class I medical device under MDR 2017/745. Clinical selection requires occupational therapist assessment confirming medium-to-high-risk seating need per NICE CG179. SWL must be verified per MHOR 1992 for the specific size selected; the correct anatomical orientation of the cushion in the seat must be confirmed at issue - the moulded base has a specific orientation and must be placed correctly to align the gel zones with the resident's anatomical landmarks. Equipment register records and MDR conformity documentation must be maintained for CQC Regulation 12 compliance.
Frequently Asked Questions
Why are two different types of gel used in the same cushion, and what does each one do?
The two-part gel design addresses a limitation of using a single gel type across the entire cushion surface. Fluid gel has very low internal resistance to flow, which makes it highly effective at redistributing pressure under point loads at bony prominences - the gel flows away from the high-pressure zone and raises around the lower-pressure surrounding area, distributing load very effectively. However, if the entire cushion surface is fluid gel, the gel migrates too freely under the resident's full body weight during prolonged sitting, causing the gel to thin dramatically under the heaviest contact zones and thicken excessively at the periphery, reducing overall pressure redistribution effectiveness over time. The blue viscoelastic gel has higher internal resistance to flow, which makes it better at holding its position and providing stable structural support across the broader seat surface, but less effective at the maximum pressure redistribution required at the ischial tuberosities. The Duoform places the fluid gel precisely where maximum pressure redistribution is needed (over the bony prominence contact zones) and uses the visco gel at the surrounding area to contain the fluid gel laterally and prevent its excessive migration, combining the strengths of both materials in a single surface.
What does the anatomically moulded foam base contribute to pressure redistribution, and how is the cushion correctly oriented?
The anatomically moulded foam base has contours built into its upper surface that correspond to the typical shape of the posterior seated anatomy - slightly raised support zones at the posterior thigh areas flanking the ischial tuberosities, and a recessed zone at the centre ischial contact area. When the moulded base is correctly oriented with the resident's anatomy, these contours increase the contact area between the foam surface and the soft tissue surrounding the ischial tuberosities, distributing the seated load more evenly across the base surface before it reaches the gel layer above. A flat base provides only the contact that the gel layer creates, while the moulded base adds anatomical contact support below the gel, which allows the gel to remain thicker and more uniform in the clinical zones even under prolonged load. The correct orientation is typically indicated by a label or marking on the cushion; the occupational therapist must confirm the correct orientation during prescription and instruct care staff accordingly. An incorrectly oriented moulded cushion places the anatomical contours at the wrong zones relative to the resident's seated position, compromising the pressure redistribution performance and potentially increasing pressure at sites that should be relieved.
NCL-P341C42421HF
- Two-Part Gel System - Fluid Gel and Viscoelastic Gel - the Duoform uses two distinct gel materials in a single cushion top layer: a white fluid gel at the high-risk contact zones (ischial tuberosities and sacral area) that redistributes pressure through active fluid flow under load, and a blue viscoelastic gel at the surrounding zones that resists fluid migration and prevents the white gel from displacing excessively during seated loading; the white fluid gel targets the highest-pressure sites with the greatest pressure redistribution capacity, while the blue visco gel maintains the structural containment and support of the gel system as a whole.
- Anatomically Moulded HR Foam Base - the high-resilience foam base of the Duoform is anatomically moulded to the posterior seated anatomy, incorporating contours that correspond to the bony landmarks of the ischial tuberosities and the surrounding soft tissue zones; the moulded base increases the contact area between the foam surface and the seated anatomy more than a flat base can achieve, and positions the gel layer at the correct anatomical zones relative to the resident's seated position when the cushion is correctly oriented in the seat.
- Four Sizes with SWLs from 110kg to 160kg - NCL-P341C42421HF (420x420x80mm, SWL 110kg); NCL-P341C45421HF (450x420x80mm, SWL 120kg); NCL-P341C45461HF (450x460x80mm, SWL 120kg); NCL-P341C51461HF (510x460x80mm, SWL 160kg); the correct size is selected based on the resident's weight relative to the SWL and the seat pan dimensions; the largest variant at 510x460mm and 160kg SWL accommodates heavier residents within the medium-to-high risk range.
- Welded Breathable Cover - Pairs with Prime Comfort Plus - MDR Class I - the four-way stretch welded highly breathable cover maintains airflow across the gel surface during seated use; pairs with the Prime Comfort Plus mattress (NCL-HSMPRIM) for 24-hour pressure care; medium-to-high risk indication per NICE CG179; MDR 2017/745 Class I medical device; selected following occupational therapist assessment; SWL verified per MHOR 1992 before issue.