CClinicalTrials.gg
TerminatedNCT00977405Updated Apr 20, 2018

Collagen-Gentamicin Implant in the Treatment of Contaminated Surgical Abdominal Wounds

A Phase 2 interventional study of Collatamp Gentamicin Implant in Superficial Surgical Site Infection, sponsored by Singapore General Hospital. Terminated at 1 site in Singapore. Open to participants aged 21 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2018-04-20.

Sponsored by Singapore General Hospital · Phase 2, Interventional, and Prevention

Phase
Phase 2
Study type
Interventional
Enrollment
70
Allocation
Randomized
Ages
21 Years and older
Sex
All
01

Study summary

The investigators' hypothesis is that placement of CollatampG in the subcutaneous layer of contaminated abdominal wounds is effective prophylaxis for superficial surgical site infection (SSI). CollatampG is composed of highly purified type 1 collagen obtained from bovine tendon, which acts as a vehicle for the aminoglycoside antibiotic, gentamicin. This implant provides a high concentration of local gentamicin at the surgical wound to decrease the local microorganism load. It has been shown that if a surgical site is contaminated with > 10 to the power of 5 microorganisms per gram of tissue, the risk of infection is markedly increased. When a gastrointestinal organ is the source of pathogens, gram-negative bacilli (e.g., E. coli) are typical isolates, which are susceptible to gentamicin. Therefore, a high local concentration of gentamicin at the contaminated surgical wound provided by the CollatampG implant may prevent the local bacterial load from reaching levels high enough to cause a clinical infection.

Read the detailed description

Aims: To decrease the incidence of superficial surgical site infection (SSI) using a collagen -gentamicin implant (CollatampG) for patients who undergo major abdominal surgery with contaminated surgical wounds.

Hypotheses: Patients undergoing abdominal surgery with wounds classified as contaminated or dirty are at a high risk of SSI. Wounds are classified as contaminated when an operation is performed through an infected area (e.g abscess, perforated viscus or traumatic wound) that has been exposed for over 4 hours. Risk of infection in these wounds has been shown to be as high as 45 %.

Our hypothesis is that placement of CollatampG in the subcutaneous layer of contaminated abdominal wounds is effective prophylaxis for superficial SSI. CollatampG is composed of highly purified type 1 collagen obtained from bovine tendon, which acts as a vehicle for the aminoglycoside antibiotic, gentamicin. This implant provides a high concentration of local gentamicin at the surgical wound to decrease the local microorganism load. It has been shown that if a surgical site is contaminated with >10 to the power of 5 microorganisms per gram of tissue, the risk of infection is markedly increased. When a gastrointestinal organ is the source of pathogens, gram-negative bacilli (e.g., E. coli) are typical isolates, which are susceptible to gentamicin. Therefore, a high local concentration of gentamicin at the contaminated surgical wound provided by the CollatampG implant may prevent the local bacterial load from reaching levels high enough to cause a clinical infection.

02

Conditions studied

  • Superficial Surgical Site Infection

Keywords

  • Wound infection
  • Gentamicin
  • Contaminated wounds
03

In context

Surgical Wound Infection

670 studies on the registry are indexed under Surgical Wound Infection; 141 are open to participants now.

This study's planned enrollment of 70 is below the median of 200 across 514 interventional studies indexed under Surgical Wound Infection.

Browse Surgical Wound Infection studies →

Lead sponsor

Singapore General Hospital is the lead sponsor of 266 studies on the registry; 57 are open to participants now.

Of its 8 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

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

04

Who can participate

Ages eligible
21 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Inclusion criteria

  • Patients having a preoperative diagnosis of perforated viscus, perforated gastrointestinal tumour, or intraabdominal abscess (based on clinical and radiological findings), requiring abdominal surgery.
  • Patient with prolonged surgery (operative time charted > 4 hours).
  • Age 21 and above, able to understand the information regarding the study.
  • Agreeable for randomization and signed consent form.

Exclusion criteria

Exclusion Criteria:

  • Patients who have known allergy to products of bovine origin or to the antibiotic, gentamicin.
  • Pregnant women or breast-feeding mothers.
  • No signed consent form.
  • Intra-operative surgical finding inconsistent with inclusion criteria (lack of evidence of intra-peritoneal sepsis or duration of surgery \< 4 hours).
  • Patients having urgent abdominal surgery without indication of intra-peritoneal sepsis (such as patients with impending intestinal obstruction).
05

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
70 participants (estimated)

Study arms

  • No intervention
    Control

    Primary closure after standard washing of wound with chlorhexidine solution

  • Experimental
    Collatamp G

    Primary closure of wound with collatamp G in subcutaneous layer

    Device: Collatamp Gentamicin Implant

Interventions

  • DeviceCollatamp Gentamicin Implant

    Collatamp Gentamicin placed into subcutaneous layer of dirty abdominal wounds

    Also known as: CollatampG

06

What researchers measure

Primary outcomes

  1. Incidence of superficial surgical site infections

    Time frame: 30 days

07

Study locations

1 site
  • Singapore General Hospital
    Singapore, 169608, Singapore
08

References and documents

Publications

  • Guzman Valdivia Gomez G, Guerrero TS, Lluck MC, Delgado FJ. Effectiveness of collagen-gentamicin implant for treatment of "dirty" abdominal wounds. World J Surg. 1999 Feb;23(2):123-6; discussion 126-7. doi: 10.1007/pl00013171. PubMed 9880419 ↗
  • Poulsen KB, Bremmelgaard A, Sorensen AI, Raahave D, Petersen JV. Estimated costs of postoperative wound infections. A case-control study of marginal hospital and social security costs. Epidemiol Infect. 1994 Oct;113(2):283-95. doi: 10.1017/s0950268800051712. PubMed 7925666 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 20, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00977405
Lead sponsor
Singapore General Hospital
Collaborators
Novem Healthcare Pte Ltd
Responsible party
Sponsor
First posted
Sep 15, 2009
Start date
Sep 2009
Primary completion
Aug 2013
Completion
Aug 2013
Last update
Apr 20, 2018

Study contacts

Julian KP Ong, FRCSEd
principal investigator · Singapore General Hospital
Jit-Fong Lim, FRCS
study director · Singapore General Hospital

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Apr 2018. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion