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HALO System

Press Release by American Gastroenterology Society
Watchful waiting no longer recommended for some high-risk Barrett’s esophagus patients

The HALO treatment
HALO  treatment is applied during an endoscopy procedure (a camera test of the gullet) to destroy the abnormal Barrett’s oesophagus lining. The lining which regrows is usually normal.

There are two different types of HALO device. The HALO 360 device treats the entire wall of the gullet. The HALO 90 device is similar, but treats a smaller area.

Patients are usually treated with the HALO 360 device initially and if, at the next endoscopy, there is any abnormal Barrett’s oesophagus lining left, retreatment with either the HALO 360 or HALO 90 device, depending on how big the area needing treatment is.

How The HALO System Treats Barrett's Oesophagus
There are two types of procedure using the HALO System:

Circumferential Radio Frequency Ablation

During the Procedure
Using standard endoscopy techniques, the physician activates and controls the different functions of the HALO360 System.

Sizing

  1. How the HALO System treats Barrett's OesophagusA catheter is inserted into the Oesophagus along side the endoscope

  2. At the tip of the catheter there is a small balloon that is inflated once inside your Oesophagus near the treatment area. The balloon and the HALOFLEX Energy Generator together measure the diameter of the Oesophagus. This information is used by the physician to select the appropriate treatment catheter.

  3. The sizing balloon is then removed and the treatment and the HALO360+ Ablation Catheter is introduced.

Ablation

  1. The HALO360+ Ablation Catheter also has a balloon at the tip, but this balloon is covered by a band of radio frequency electrodes.

  2. How the HALO System treats Barrett's OesophagusOnce the electrodes of the balloon are positioned on the desired treatment area the balloon is inflated. The HALO360 Energy Generator and the ablation catheter then work together to deliver a short burst of energy that is circumferential: 360 degrees. Once the electrodes of the balloon are positioned on the desired treatment area the balloon is inflated. The HALO360 Energy Generator and the ablation catheter then work together to deliver a short burst of energy that is circumferential: 360 degrees.

    • The design of this technology limits the energy delivery to a depth clinically proven to remove the diseased tissue while reducing the risk of injury to the deeper and healthy tissue layers.

    • The HALO360+ Ablation Catheter ablates a 3cm circumferential segment of Barrett's tissue within the oesophagus

  3. For patients with Barrett's Oesophagus lesions longer than 3cm, the HALO360+ Ablation Catheter is simply repositioned and the ablation steps are repeated.

What to Expect After the Procedure
It is very important that a patient follows the discharge instructions provided by the physician or the nursing staff after the procedure to ensure limited time of discomfort and ensure proper healing of the Oesophagus. Clinical studies show that re-growth of healthy tissue occurs within one month in the treated area.

The studies also demonstrated that patients had 90% of their Barrett's removed after one or two treatment sessions at one year follow-up. In addition the studies showed that over 70% of the patients were completely cured of their Barrett's after 1 or 2 treatments at one year follow-up. The remaining patients had small focal areas left to be treated.

A follow-up appointment will be scheduled by the physician's office to conduct an upper endoscopy to inspect the treated area determine if an additional treatment is necessary.

 

Focal Radio Frequency Ablation

During The Procedure
Using standard endoscopy techniques, the physician activates and controls the different functions of the HALO90 System.

  1. How the HALO System treats Barrett's OesophagusThe ablation catheter is first mounted onto the endoscope.

  2. Both devices are introduced into the oesophagus.

  3. By manipulating the endoscope, the ablation catheter is positioned within the Oesophagus at the affected portion of the oesophagus.

  4. The physician delivers ablative energy to the targeted tissue. The energy application is less than 1 second and is delivered in an automated manner. The design of this technology limits the energy delivery to a depth clinically shown to remove the diseased tissue (less than 1mm) while reducing the risk of injury to the deeper tissue layers.

  5. For patients with more than one lesion of Barrett's Oesophagus, the HALO90 Ablation Catheter is repositioned and the ablation steps are repeated.

 

See also:

Interview with Grant Fullerton (video)
Where to get HALO Treatment?
NICE Guidelines

 

For more information on the Halo System visit http://www.curebarretts.com/

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