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Related Experiment Videos

The optical "Veress-needle"--initial puncture with a minioptic

G Schaller1, M Kuenkel, B C Manegold

  • 1Black Forest Endosurgery Institute, Freiburg, Germany.

Endoscopic Surgery and Allied Technologies
|February 1, 1995
PubMed
Summary
This summary is machine-generated.

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This study introduces a novel visually controlled laparoscopic access technique using a fibreglass optic needle, significantly reducing the risk of surgical injury during minimally invasive procedures.

Area of Science:

  • Minimally Invasive Surgery
  • Surgical Technology
  • Gastrointestinal Surgery

Background:

  • Laparoscopic access, crucial for minimally invasive surgery, carries risks of serious complications like bowel injury and bleeding due to blind Veress-needle and trocar insertion.
  • Existing alternative techniques for laparoscopic abdominal access have not fully achieved permanent visual control during initial penetration.
  • Preventing iatrogenic injury requires visual confirmation of all perforated tissue layers, similar to open surgery, before establishing pneumoperitoneum.

Purpose of the Study:

  • To develop and evaluate a novel method for laparoscopic abdominal access that provides continuous visual control of all tissue layers during insertion.
  • To minimize the risk of complications associated with blind needle and trocar insertion in laparoscopic surgery.
  • To enable early diagnosis and management of potential injuries during the access phase.

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Main Methods:

  • A 2 mm fibreglass optic probe was integrated into a specialized cannula for insertion through the abdominal wall.
  • The system incorporated a rinsing mechanism for maintaining clear vision and water dissection to facilitate passage.
  • The fibreglass optic-equipped safety needle was employed for visually controlled access in 184 laparoscopic procedures.

Main Results:

  • The technique allowed precise visualization of all abdominal wall layers, including vasculature, prior to trocar insertion.
  • In two cases with dense adhesions, endoscopic visualization immediately identified small bowel perforations, which required no treatment.
  • The intended laparoscopic procedures were successfully completed in all 184 cases.

Conclusions:

  • Visually controlled laparoscopic access using the developed fibreglass optic needle is a safe and effective method for preventing iatrogenic injuries.
  • This technique enhances safety by providing direct visualization during abdominal wall penetration, crucial for complex cases.
  • Early detection of injuries, as demonstrated in cases of bowel perforation, is a significant advantage of this approach.