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CompletedNCT06199635GIW-SFMUpdated Jul 13, 2026

Early Feasibility for Safety & Device Functionality of SFM Anastomosis Device Used in 3 Procedures (SNAP-S) or (SNAP-PS) or (J-J)

An interventional study of Self-Forming Magnetic Anastomosis Device and Delivery System in Morbid Obesity, sponsored by GI Windows, Inc.. Completed at 2 sites in 2 countries. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2026-07-13.

Sponsored by GI Windows, Inc. · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
28
Allocation
Non-randomized
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The objectives of this study are to assess the initial safety and device functionality of the SFM Anastomosis System including delivery systems when used to create a duodenal-ileal (D-I) anastomosis either during sleeve gastrectomy (i.e., SNAP-S procedure) or patients with prior sleeve gastrectomy who experience inadequate weight loss (i.e., SNAP-PS procedure) or a Roux-en-Y gastric bypass jejuno-jejunostomy. Additionally, the study is designed to evaluate the potential of these procedures to induce weight loss and to improve metabolic comorbidities in obese subjects.

Read the detailed description

This is a multi-arm, single-center, early feasibility study to evaluate the use of the SFM Anastomosis System for creation of a Duodenal-ileal anastomosis in participants undergoing primary sleeve gastrectomy (SNAP-S cohort) or who have experienced inadequate weight loss following sleeve gastrectomy (SNAP-PS cohort) defined to be failure to achieve a minimum 50% EWL at least 18 months post sleeve gastrectomy or creating the jejuno-jejunostomy anastomosis in a Roux-en-Y gastric bypass. Adult male and female subjects between the ages of 18 and 65 years-old who are candidates for the primary or revisional surgery will be considered for participation.

Patients appearing to meet basic eligibility criteria and who sign the study specific consent form will be screened for enrollment into this study and will be assessed by a multidisciplinary research team with pre-procedure nutritional and medical evaluation (including psychological and behavioral evaluation by an internist/bariatrician).

Subjects meeting the inclusion and exclusion criteria and enrolled into the study will undergo a procedure using the SFM anastomosis device in which the duodenum will be connected to the ileum with the creation of an anastomosis using the SFM device and delivery systems. For subjects undergoing concurrent sleeve gastrectomy and D-I anastomosis (SNAP-S cohort) it is anticipated that the D-I diversion will be created after the sleeve gastrectomy (unless the investigator determines that the reverse order is more appropriate for a particular subject). For subjects undergoing a Roux-en-Y gastric bypass, the standard surgical protocol will be followed at the institution coupled with the minor changes required to connect the SFM device.

02

Conditions studied

  • Morbid Obesity

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03

In context

Obesity, Morbid

922 studies on the registry are indexed under Obesity, Morbid; 172 are open to participants now.

This study's enrollment of 28 is below the median of 60 across 590 interventional studies indexed under Obesity, Morbid.

Browse Obesity, Morbid studies →

Lead sponsor

GI Windows, Inc. is the lead sponsor of 14 studies on the registry; 5 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • All Subjects:

    1. Age 18-65 years at screening
    2. For the primary or post sleeve gastrectomy Anastomosis procedures (SNAP-S/SNAP-PS)- Obesity with Body Mass Index (BMI) ≥ 35 kg/m2 but ≤ 55 kg/m2 at time of screening with or without comorbidities at time of screening. If subject has obesity-related comorbidities such as hypertension, dyslipidemia, and sleep apnea, these comorbidities must be well-controlled
    3. For the Roux-en-Y gastric bypass jejuno-jejunostomy procedure (J-J) - Obesity with Body Mass Index (BMI) ≥ 35 kg/m2 but ≤50 kg/m2 with or without comorbidities at time of screening. If subject has obesity-related comorbidities such as hypertension, dyslipidemia, and sleep apnea, these comorbidities must be well-controlled.
    4. Able to understand and sign informed consent document
    5. Patient lives, and intends to remain, within a 150-km radius of study center for 12 months
    6. Willing to commit to sustained healthy behaviors that include diet, eating and exercise habits for the duration of the trial
    7. Willing to refrain from smoking during the study follow-up period
    8. If subject is female, she must commit to not becoming pregnant for 12 months and agree to use of contraceptives during this period and may not be nursing

Exclusion criteria

Exclusion Criteria:

  • 1. Known or suspected allergy to nickel, titanium or Nitinol

    2. Type 1 Diabetes

    3. Uncontrolled T2DM Fasting glucose ≥ 200 mg/dl (11.1 mmol/L) and/or hemoglobin A1c >10 or use of injectable insulin

    4. Any documented conditions for which endoscopy and/or laparoscopy would be contraindicated or history of previous technically difficult or failed endoscopy

    5. Contraindication to general anesthesia

    6. Clinically significant finding during procedural endoscopy such as presence of an unhealed ulcers, bleeding lesions, tumors or ischemic or necrotic tissue at target magnet deployment site

    7. Congenital or acquired anomalies of the GI tract, including atresia, stenosis, prior obstruction or malrotation

    8. Presence of a duodenal diverticulum (>10mm)

    9. Any previous major surgery on the stomach, duodenum, hepatobiliary tree (excluding laparoscopically removed gallbladder), pancreas or right colon

    10. History of chronic gastrointestinal disease (e.g., cirrhosis, inflammatory bowel disease) that in the opinion of the Investigator may preclude safe and complete study participation

    11. Uncontrolled severe hypertension (blood pressure >160/100mmHg)

    12. Pre-existing severe comorbid cardio-respiratory disease (e.g., congestive heart failure, uncontrolled cardiac arrhythmia, coronary artery disease, chronic obstructive lung disease requiring supplemental oxygen, pulmonary embolism, Myocardial Infarction with prior 6 months)

    13. Liver biochemistries (ALT and AST) ≥ 3 times the upper limit of normal

    14. Uncorrectable coagulation disorder (platelets \< 100,000, PT >2 seconds above upper normal limit or INR >1.5) at time of procedure, Note: management of anti-platelet medications, when applicable, will follow standard practices of the institution

    15. Uncorrectable anemia (Hemoglobin \< 11 g/dL in women and \<12.5 g/dL in men)

    16. Specific genetic or hormonal cause of obesity such as Prader -Willi syndrome

    17. For females of child-bearing potential: Pregnancy or desire to be pregnant during the study

    18. Concurrent condition anticipated to require MR imaging within the first 2 months after the study procedure

    19. Diagnosed Bulimia Nervosa or Binge Eating Disorder (using DSM-5 criteria)

    20. Physical or mental disability or psychological illness that in the opinion of the Investigator would be a contraindication for bariatric surgery

    21. Subject is immunocompromised (e.g., active treatment for malignancies, hematologic malignancy, on immunosuppressive therapy, moderate or severe primary immunodeficiency, advanced or untreated HIV, active treatment with high-dose corticosteroids (i.e.,20 or more mg of prednisone or equivalent per day when administered for 2 or more weeks prior to surgery) or other immunosuppressive or immunomodulatory agents.

    22. Subject has an active or suspected infection at the surgical site or a CDC Class 3/contaminated or Class 4/dirty-infected surgical wound. Subject is not appropriate for inclusion in the clinical trial, per the medical opinion of the Principal Investigator"

    23. Other prior or concurrent conditions that in the opinion of the Investigator would be unlikely to receive clinical benefit from the study procedure or participation in the study may compromise patient safety or study objectives such as the presence/diagnosis of a severe and evolutive life threatening pathology unrelated to obesity including but not limited to: ongoing infection, chronic pancreatitis, severe hepatic dysfunction, or renal dysfunction (GFR \<60mL/min/1.73m2)

    24. Any form of substance abuse or psychiatric disorder that in the opinion of the investigator could interfere with the conduct of the study

    25. (Women only) Pregnancy at screening (+ urine hCG) or unwilling to use contraception throughout study period

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
28 participants (actual)

Study arms

  • Experimental
    SNAP-S

    Self-Forming Magnetic (SFM) Anastomosis Device and Delivery System being used to to Create a Primary Sleeve Gastrectomy Duodenal-Ileal Anastomosis

    Device: Self-Forming Magnetic Anastomosis Device and Delivery System

  • Experimental
    SNAP-PS

    Self-Forming Magnetic (SFM) Anastomosis Device and Delivery System being used to to Create a Duodenal-ileal Anastomosis years after a Primary Sleeve Gastrectomy)

    Device: Self-Forming Magnetic Anastomosis Device and Delivery System

  • Experimental
    J-J

    Self-Forming Magnetic (SFM) Anastomosis Device and Delivery System being used to to Create a Jejuno-Jejunostomy in a Roux-en-Y Gastric Bypass

    Device: Self-Forming Magnetic Anastomosis Device and Delivery System

Interventions

  • DeviceSelf-Forming Magnetic Anastomosis Device and Delivery System

    Self-Forming Magnetic Anastomosis Device to create a gastrointestinal anastomosis

06

What researchers measure

Primary outcomes

  1. Primary Effectiveness Endpoint:

    Ability to create the anastomosis with SFM without the need for open conversion or use of additional laparoscopic/endoscopic anastomoses devices (endoscopic/laparoscopic suture devices or staplers - except for closure of the laparoscopic enterotomy).

    Time frame: 30 days

  2. Primary Safety Endpoint:

    The primary safety endpoint for this study is "Freedom from anastomosis adverse events" or "FFAAE" within 30 days including American College of Surgeons (ACS) Grade B/C anastomosis leak (requiring active therapeutic intervention/re-laparotomy), anastomotic bleeding, and small bowel obstruction. All adverse events will be documented.

    Time frame: 30 days

Secondary outcomes

  1. Total Body Weight Loss (TBWL)

    Percent total body weight loss (TBWL) calculated as: % TBWL = \[((initial weight - final weight)) ⁄ (initial weight)\] × 100

    Time frame: 12 months

  2. Percent Responders

    Percent of patients losing at least 10% of their baseline weight (i.e., weight at time of study procedure).

    Time frame: 12 Months

07

Study locations

2 sites
  • Clinica Colonial Hospital
    Santiago, Huechuraba, Región Metropolitana 8580000, Chile
  • Bhandari Hospital & Research Centre
    Indore, Madhya Pradesh 452010, India
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 13, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06199635
Lead sponsor
GI Windows, Inc.
Responsible party
Sponsor
First posted
Jan 10, 2024
Start date
Dec 15, 2023
Primary completion
Jan 15, 2025
Completion
Jul 8, 2026
Last update
Jul 13, 2026

Study contacts

Mohit Bhandari, MD
principal investigator · Chief of Surgery

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2026. You cannot join it, but the record below documents what was studied.

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