SERTAIN S4100EW – Bariatric High Dependency Chair

The Sertain S4100EW Bariatric HDU chair offers comfort, adjustable pressure care, for bariatric critical care patients up to 350KG in weight. An adjustable seating platform can be extended from 70cm – 91cm in width – one of the largest available in the UK. The chair can be used for post-op recovery and rehab, and the ergonomic features reduce the load on nursing, care and therapy staff, making early mobilisation easier, safer and quicker. This chair provides a means to rehab larger patients with comfort and dignity.

Please Call 01522 420091 to Discuss Your Ordering Options


  • High levels of comfort and pressure relief
  • Removable or fold down-armrests
  • Unique 100% lay-flat position
  • Legrest elevation and seat tilt
  • Hygienic wipe-clean covers
  • Electric backrest recline
  • Adjustable seat width
  • Fold away wings

Technical Specification

 Safe Working Load 350kg
 Overall Width 980mm
 Seat Height (Min) 550mm
 Seat Height (Max) 610mm
 Product Weight 100Kg
 Seat Width (Adjustable) 700mm – 914mm
 Overall Length (Supine) 1800mm

(2000mm with extended legrest)

 Overall Length (Chair Position) 1200mm


Client Groups


At Ambre-Stone Ltd, we have four focus areas, within the specialist healthcare equipment sector:

1. Critical Care Professionals – are you implementing an Early Mobilisation programme? Then you’re in the right place – our rehab and mobilisation seating is designed to make your goals easier, safer and quicker to achieve.

2. Dementia Care and MHOA Professionals – need to reduce bed falls but frustrated by floor level beds with huge end columns? Then our EN9000 bed, with its ultra-low platform and fully acute spec, will change the way you view floor level beds.

3. Fast Track Procedure and Recovery Seating for Day Case and Emergency Department – the Sertain range of transfer, day case and recovery chairs can help to save space, reduce transfers and streamline the day case procedure pathway and are also used to free up space, time and resources in Emergency Departments.

4. Long Term Nursing Care Facilities – We are right behind you, providing swift deliveries and installations of critical equipment items, such as pressure care mattresses, profiling beds etc – anytime, anywhere. Our infrastructure is set up to provide you with all the necessary support you and your organisation need at all times.

Industries we are proud to serve:

  • Intensive Care
  • Day Surgery Procedures
  • Mental Health
  • Older Patients
  • Long-Term Care Facilities

How To Use

Match the height of the bed with electric hi-lo.

Easy lateral transfers at a good working height.

Comfortable, easy to use and mobile.


FAQ’s and additional info to support the use of the ‘Sertain’ chairs…

FAQ #1

″Where do I find the instruction manuals for the Sertain™ chairs?”

You can access these here on our website

FAQ #2

″How often should I charge the Sertain chair?”

The Sertain chair has a trickle charger and should be plugged in whenever the chair is stationary, for maximum battery life.

FAQ #3

“Why do you call the ‘Sertain Chairs’ “platforms for care?”

Because our Sertain chairs are more than just a chair – they are designed to cross the boundary between a bed and a chair, with features like layflat, hi-lo and removable sides. A Sertain is a platform for standing transfers, lateral transfers, therapy, rest and mobilisation.

FAQ #4

“Is it safe to wheel the Sertain chair around the hospital and even outside?”

Yes of course; the chair is designed for use as a portering device and has large 150mm tracking and braking wheels. Outside is fine too as long as the surface is smooth (no grass, gravel or big kerbs please). The ability to move even critically ill patients out of the ward environment, and into the cafe or out into the fresh air, has made a huge difference to many lives since the early 90’s!

FAQ #5

“How often should care chairs be serviced and maintained?”

A minimum of 12-monthly for major servicing should be in place. In between annual servicing, safety checks should be carried out by observation and any faults or issues reported to your estates / EBME team. Need advice about servicing, maintenance or aftersales? Contact our helpful customer services team today!

FAQ #6

“Can I hire the Sertain Chair or do I have to buy?”

Yes, you can hire all the models in the Sertain range, we have a large stock of chairs and can deliver nationally with depots in the West Midlands and Scotland. We make sure we interpret your needs precisely so that the right spec and the right size chair is delivered, rapidly, 7 days a week.

FAQ #7

“How do you ensure chairs and beds are properly decontaminated before and after rental?”

We utilise the Medi9 decontamination system which includes a deep clean fogging machine. This method of cleaning kills bacteria’s, spores and viruses and is way more thorough than manual cleaning alone. Our vehicles are also regularly fogged between use. Equipment is delivered wrapped and ready to go.

FAQ #8

“Do you provide product training?”

Yes, AmbreStone provides full product training, product demonstrations & full patient assessments. We are your partner in supporting you caring for your patients. Please watch the videos on the product pages on the website before requesting training, as this should show you how to use our equipment.




How to Videos

Happy Customers

Bathing Cradle Review

Hi Andrew

We have had a really exciting day today: our pupil has tried the Shower Cradle in the pool and it is absolutely amazing!! We set it up this morning with the rolls and headrest ect and the pupil has just been in the water independently for the first time with the TA beside and not needing to hold on to support at all.

we have shown it to lots of staff and will now start assessing other pupils to see how many more would benefit from using the cradle. it is so adaptable with the adjustable mesh/tilt feature and the different loops to hoist it into the water and it will make such a difference to our less mobile pupils.

Parent of Blind 10yo Child

“Being 10yrs old, blind unable to talk or walk would be enough to moan about for most…yet our daughter didn’t moan…until we got the Durance Junior chair.!!

She loves it so much that unless we get her out of her wheelchair, after school or hospital trips and into her comfy Durance Junior she wont stop moaning…she loves it.

Great personalised service were the customers needs are put first…Many other companies would do well to learn from Andrew at ambre-stone”

Team Lead for Children’s Occupational Therapy and Physiotherapy

I have just been sent the most wonderful photo of ………  in her Durance chair.  Her mum is thrilled that …….. is finally comfortable.

Many thanks.  Sorry I cannot share this photo with you but take it from me she looks fab.

Good job!

Professional Occupational Therapist

Using The Hugga system has resulted in demonstrable and measurable clinical improvements, protection or maintenance of body shape for my clients. A highly effective solution to postural care.

General Manager, Barchester Care Home

Having worked with Andrew providing care equipment support over a long period, I can share my appreciation of the genuine way he looks after his customers and clients a like. Someone who I have been happy to trust.

Critical Patient Carer, Hospital – Birmingham

The chairs are light and easy to move, meaning that they can be quickly manoeuvred to reach the patients who need them the most, and are ideally suited to the fast-paced Critical Care environment. Great service – thanks!

Manager, Assisted Living Centre

I find Ambre-Stone Healthcare very professional and competent with our patients, assessing their needs with our therapists – so correct equipment is put in place at all times.

Very reliable, knowledgeable about equipment helpful and most of all very friendly!


Matron, NHS Hospital

I would just like to say that the service we receive from Andrew Smith at Ambre-Stone is excellent. He always rises to any challenge we set him.  I know I can ring him at a moment’s notice if a piece of equipment needs attention.

Patient Carer, Barchester Care Home

The guys at AmbreStone Healthcare Equipment always give excellent advice and from there years of knowledge in the healthcare industry, they give efficient professional service.