ClinicalTrials.gg
RecruitingNCT07035431DRAIN LowerUpdated Nov 6, 2026

Endo-SPONGE for Treatment of Anastomotic or Hartmann's Stump Leakages in Lower Pelvic Area

An interventional study of Endo-SPONGE in Anastomotic Leaks and Hartmanns Stump Leakage, sponsored by Boston Scientific Corporation. Recruiting at 10 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-06.

Sponsored by Boston Scientific Corporation · Not applicable, Interventional, and Treatment

Updated Oct 19, 2026Start date movedGo to Updates ↓
Phase
Not applicable
Study type
Interventional
Enrollment
66
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

This study is intended to evaluate the safety and effectiveness of Sponge-based Endoscopic Vacuum Therapy (EVT) using Endo-SPONGE for the treatment of Anastomotic Leaks (AL) or Hartmann's stump leakages following colorectal surgery in a prospective multi-center study.

02

Conditions studied

  • Anastomotic Leaks
  • Hartmanns Stump Leakage

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03

In context

Anastomotic Leak

240 studies on the registry are indexed under Anastomotic Leak; 72 are open to participants now.

This study's planned enrollment of 66 is below the median of 140 across 128 interventional studies indexed under Anastomotic Leak.

Browse Anastomotic Leak studies →

Lead sponsor

Boston Scientific Corporation is the lead sponsor of 528 studies on the registry; 40 are open to participants now.

Of its 64 completed or terminated interventional studies of FDA-regulated products, 56 (88%) have results posted.

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

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Confirmed grade B anastomotic leak as per the ISGRC (International Study Group of Rectal Cancer) grading system after colorectal surgery.
  • Subject is eligible for endoscopic intervention.
  • Subject has a transmural defect of at least 2 cm in diameter following colorectal surgery in the lower pelvic area.
  • Subject has an anastomotic or Hartmann's stump leak located within an extraperitoneal cavity.
  • Subject has pre-existing diverting ostomy or an ostomy created prior to the first Endo-SPONGE placement.
  • Subject understands the trial requirements and is willing and able to comply with the study procedures, all protocol-required follow up evaluations and provide written to participate in the study.
  • Investigator decision that EVT is the most suitable treatment of the available treatment options.

Exclusion criteria

Exclusion Criteria:

  • Subject is under 18 years of age.
  • Potentially vulnerable subject, including, but not limited to pregnant women.
  • Subject has undergone EVT or other similar interventions for the current colorectal indication.
  • Subject had colorectal surgery more than 60 days prior to the planned study procedure.
  • Subject has any necrotic tissue that would require endoscopic debridement prior to Endo-SPONGE placement.
  • Subject has known for EVT as per the IB.
  • Subject is currently enrolled in another study that would directly interfere with the current study, without prior written approval from the sponsor.
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

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You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
66 participants (estimated)

Study arms

  • Experimental
    Endoscopic Vacuum Therapy (EVT) Device

    Device: Endo-SPONGE

Interventions

  • DeviceEndo-SPONGE

    The intervention involves the placement of an Endo-SPONGE in the leakage cavity, and applying suction to facilitate drainage.

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What researchers measure

Primary outcomes

  1. Serious Adverse Events

    The proportion of subjects with one or more study device or endoscopic or study procedure-related Serious Adverse Events (SAEs) occurring up to 3 months after the last study device removal.

    Time frame: Day 0 Study Procedure to end of study; up to 6 months

  2. Clinical Success

    The proportion of subjects that demonstrate clinical success, which is defined as closure of the anastomotic or Hartmann's stump leak, confirmed via endoscopy or contrast-enhanced computed tomography imaging within 3 months after the study procedure without the need for an additional endoscopic or surgical intervention.

    Time frame: Day 0 Study Procedure to the last study device removal; up to 3 months

Secondary outcomes

  1. Technical Success

    Defined as the ability to deploy the Endo-SPONGE in the intended location. This will be calculated for study procedure and every Endo-SPONGE Exchange that is attempted.

    Time frame: Day 0 Study Procedure to the last study device exchange; up to 3 months

  2. Closure Time

    Time to colorectal anastomotic or Hartmann's stump leak closure.

    Time frame: Day 0 Study Procedure to the last study device removal; up to 3 months

  3. Rate of Reinterventions

    Rate of Reinterventions after closure of the anastomotic or Hartmann's stump leak.

    Time frame: From last study device removal to end of study; 3 months

  4. Time to Additional Intervention

    Time to additional intervention, if Endo-SPONGE treatment is insufficient.

    Time frame: Day 0 Study Procedure to the last study device removal; up to 3 months

  5. Leak Recurrence

    Leak recurrence within 3 months following completion of Endo-SPONGE therapy.

    Time frame: From last study device removal to end of study; 3 months

  6. Endo-SPONGE Exchanges

    Number of Endo-SPONGE exchanges needed to reach clinical success.

    Time frame: Day 0 Study Procedure to last study device removal; up to 3 months

  7. Length of Hospitalization

    Length of Hospitalization.

    Time frame: Day 0 Study Procedure to end of study; up to 6 months

  8. Mortality Rate

    Mortality rate through 3-month follow-up.

    Time frame: Day 0 Study Procedure to end of study; up to 6 months

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Study locations

4 of 10 sites recruiting
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

2 registry updates since Sep 25, 2026
Start date
Oct 2026→Nov 2026
Oct 19, 2026
Show all 2 updates
  1. Nov 6, 2026
    Minor edits only
    + 2 other changes: verification date and date precision
  2. Oct 19, 2026
    Start date Oct 2026→Nov 2026
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07035431
Responsible party
Sponsor
First posted
Jun 25, 2025
Start date
Nov 2, 2026
Primary completion
Dec 2028 (estimated)
Completion
Dec 2028 (estimated)
Last update
Nov 6, 2026

Study contacts

Steve Fodem
Contact
Steve.Fodem@bsci.com
651-246-3094
Eric Pauli, MD
principal investigator · Penn State Health

Oversight

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

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