Transmitted Light Tissue Thickness Analysis (TiLTT)

Morbid Obesity Clinical Trial

— TiLLT  

Official title:

Transmitted Light Tissue Thickness Analysis (TiLTT)

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02749201
• Other study ID #: 2015-06-15-MMC
• Status: Completed
• Phase: N/A
• Start date: April 2016
• Est. completion date: April 2017

Study information

• Verified date: June 2021
• Source: Maimonides Medical Center
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

To assess gastric wall thickness using transmitted light intensity.

Description:

The most common surgical procedure for weight loss is the sleeve gastrectomy. The laparoscopic sleeve gastrectomy (LSG) involves the linear stapling of the stomach using a stapling device [e.g. Echelon (Ethicon Somerset NJ)] fired multiple times along the length of the stomach thereby excising 80-90% of the stomach leaving the patient with a "sleeve" of stomach rather than the normal anatomical pouch. The gastric wall varies in thickness and thus there are a varied staple sizes available for this use. Staple sizes range from 2.0mm-5.0mm in height. In standard surgical practice the surgeon chooses the size of staple cartridge for each subsequent firing based on his experience and estimations about the thickness of the stomach tissue in any given region. The drawback of this technique is that it is highly inaccurate. If the surgeon's estimation is in error, the staple height chosen may be either too tall or too short leading to bleeding or leakage from between the staples or malformed/unformed staples leading to staple line failure. Any of these errors can lead to devastating complications such as hemorrhage, leak, sepsis and death. To date there is no objective way to measure the thickness of the tissue being stapled and thus staple choice relies entirely on surgeon estimation which is inherently inaccurate. The investigators hypothesize that a light source placed in the stomach lumen will transmit light through the gastric wall. The amount of light transmitted, i.e. visible to an imaging device arrayed external to the stomach, will be directly proportionate to the thickness of the stomach. This study will take advantage of the fact that during routine procedures in the sleeve gastrectomy procedure a lighted tube is placed into the gastric lumen via the mouth. This device is called the Gastrisail and has 10 separate LED lights arrayed along its length. This allows for the measurement of transmitted light intensity through the gastric wall at 10 individual locations along the length f the stomach. In addition this study will take advantage of the fact that during standard practice in a sleeve gastrectomy a section of the stomach corresponding to the location of the lights is excised and sent for pathological evaluation. This will allow us to measure the actual thickness of the stomach at 10 points corresponding to he locations of the transmitted light intensity. For this measurement The investigators will use a standardized and validated measurement tool/calipers. Now with two sets of numbers the investigators plan to correlate the degree of transmitted light intensity with actual thickness measurements and thereby reach an algorithm which will allow the transmitted light intensity data alone to predict gastric wall thickness. This will provide the surgeon with an entirely non-invasive objective measure of gastric wall thickness and hopefully improve his/her choice of staple size during these surgical procedures thus improving safety.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 10
• Est. completion date: April 2017
• Est. primary completion date: April 2017
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 85 Years

Eligibility

Inclusion Criteria:

• Subject has provided informed consent

• Subject is between the ages of 18 and 80 years of age

• Subject is scheduled for and undergoes primary sleeve gastrectomy

Exclusion Criteria:

• Revisional Bariatric Surgery

Related Conditions & MeSH terms

• Morbid Obesity
• Obesity, Morbid

Intervention

Device:
• Gastrisail
Light Intensity and gastric wall thickness assessment

Locations

Country	Name	City	State
United States	Maimonides Medical Center	Brooklyn	New York

Sponsors (2)

Lead Sponsor	Collaborator
Maimonides Medical Center	Medtronic

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Number of Patients With Transmitted Light Intensity to Gastric Wall Thickness)	Number of patients with transmitted light intensity to gastric wall thickness between the groups	intraoperative