Primary obesity surgery endolumenal (POSE) is a minimally invasive weight loss procedure that leaves no external scars.

A surgeon performs the operation using special instruments that can access your stomach through your mouth and throat.

Why you might need it

If you are obese and need to lose weight for your health, but want a less invasive procedure that doesn't leave scars - such as gastric bypass surgery, POSE could be right for you.

This is a permanent procedure that creates a fold in your stomach, reducing its size and your ability to eat large quantities of food.

By reducing the size of your stomach, the POSE aims to reduce the amount of calories absorbed while helping you to feel full after eating smaller meals. In addition to losing weight, people who have had this procedure with us said it helped them:

  • reduce their appetite
  • have better health, more energy and improved mental well being
  • worry less about developing serious health problems such as type 2 diabetes
  • have more self-esteem and self-confidence
  • take part in new activities, such as playing sport with their children
  • experience a positive, long term change in attitude towards healthy eating
  • have improved health and mobility.

A full evaluation of your individual needs and circumstances will be carried out by the specialist weight loss surgery team at the hospital, and you will be provided with a comprehensive verbal and written explanation of any recommended treatment. Patients are assessed on an individual basis but this procedure may not be suitable for people that have already had complicated upper abdominal surgery.

Who will do it?

Our patients are at the heart of what we do and we want you to be in control of your care. To us, that means you can choose the consultant you want to see, and when you want. They'll be with you every step of the way.

All of our consultants are of the highest calibre and benefit from working in our modern, well-equipped hospitals.

Our consultants have high standards to meet, often holding specialist NHS posts and delivering expertise in complex sub-specialty surgeries. Many of our consultants have international reputations for their research in their specialised field.

Before your treatment

Our patients are at the heart of what we do and we want you to be in control of your care. To us, that means you can choose the consultant you want to see and when you want. They’ll be with you every step of the way: from giving advice at your first consultation, through to offering on-going support after your surgery.

All of our cosmetic surgeons are of the highest calibre and benefit from working in our modern, well equipped hospitals.  A cosmetic surgeon’s reputation, qualifications and experience are vitally important, so we only work with consultant grade specialists. These are highly experienced consultants who have completed years of medical training. All our consultants are on the specialist register of the General Medical Council (GMC), and many are also members of the UK’s leading cosmetic and plastic surgery associations.

Preparing for your treatment

We've tried to make your experience with us as easy and relaxed as possible.

For more information on visiting hours, our food, what to pack if you're staying with us, parking and all those other important practicalities, please visit our patient information pages.

Our dedicated team will also give you tailored advice to follow in the run up to your visit.

The procedure

You will be put under a general anaesthetic, so you’ll be asleep throughout the operation. The procedure will take one to two hours.

Your surgeon will put a series of special instruments down your throat to create a fold in your stomach. The instruments used are long and thin (about the thickness of a straw) and are tipped with lights, cameras and small cutting implements, so the doctor can see clearly while they are operating.


You will be taken from the operating theatre to a recovery room, where you will come round under close supervision.

After this, you will be taken to your room or comfortable area where you can rest and recuperate until we feel you’re ready to go home.

Pain relief

We will provide you with a supply of all the medicines your consultant feels you need to take home with you after you've left hospital, up to 14 days. This may be at an additional cost to some patients.

Recovery time

You should arrange to take a week off work. You may feel sick and bloated for a few days but this should settle down fairly quickly.

You will be restricted to a liquid-only diet for the first two days, consisting of water, juice, milk and thin soup. You will then gradually return to a normal diet and your ability to tolerate most types of food should improve - although the amount you can eat should be considerably less.

End results

You should notice that you are losing weight within a month of your surgery. But you'll need to commit to a life-long weight loss plan to see permanent results. Our weight loss team will help devise a suitable diet and exercise plan for you and they will continue to support you after the operation.

How your loved ones can help

Once you’re ready to be discharged, you’ll need to arrange a taxi, friend or family member to take you home because you won’t be able to drive. You should also ask them to help with shopping and cleaning for a few days.

Looking after you

We’re with you every step of the way through your recovery, even after you’ve left hospital.

After your operation we will provide you with all the appropriate medication, advice on what you should and shouldn't do, and any other follow-up support you need. Typically your consultant will want to see you after your treatment to see how you’re doing.

The procedure can cause temporary sore throat and nausea. All surgical procedures, no matter how expertly or carefully they are performed, carry risks and the importance of a full evaluation and consultation to discuss your understanding and expectations in relation to these risks cannot be over emphasised. We will spend plenty of time with you discussing these aspects of your treatment.

If you have any questions or concerns, we’re ready to help.

How much does it cost?

A fixed price for this treatment may be available on enquiry and following an initial consultation.

We are committed to delivering excellent individual care and customer service across our network of hospitals, clinics and specialist care centres around the UK. Our dedicated and highly trained team aim to achieve consistently excellent results. For us it's more than just treating patients, it's about looking after people.

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Important to note

The treatment described on this page may be adapted to meet your individual needs, so it's important to follow your healthcare professional's advice and raise any questions that you may have with them.