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Related Experiment Videos

Balloon sheaths for gastrointestinal guidance and access: a preliminary phantom study.

Xu He1, Ji Hoon Shin, Hyo-Cheol Kim

  • 1Department of Radiology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.

Korean Journal of Radiology
|September 8, 2005
PubMed
Summary

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A new balloon sheath significantly improves gastrointestinal (GI) guidance and access in phantom studies. Inflating the balloon in the gastric body demonstrated the best catheter advancement, showing clinical potential.

Area of Science:

  • Gastroenterology
  • Medical Device Engineering
  • Endoscopic Procedures

Background:

  • Gastrointestinal (GI) procedures require precise guidance and access.
  • Existing methods for GI access can be challenging, especially in cases of strictures.
  • A novel balloon sheath design aims to enhance maneuverability and control during endoscopic interventions.

Purpose of the Study:

  • To evaluate the feasibility and usefulness of a novel balloon sheath for GI guidance and access.
  • To compare the performance of the balloon sheath in different configurations (deflated, inflated in fundus, inflated in body) against a control group.
  • To assess the device's efficacy in both normal and strictured gastroduodenal phantom models.

Main Methods:

  • A phantom study was conducted using two gastroduodenal models (with and without stricture).

Related Experiment Videos

  • A coil catheter was advanced using a guide wire in four groups: no sheath (I), deflated sheath (II), inflated sheath in fundus (III), and inflated sheath in gastric body (IV).
  • Each test was repeated 10 times per group by two researchers, recording catheter tip positions.

    • Main Results:

    • Catheter advancement performance improved significantly with the balloon sheath in all configurations compared to no sheath (Group I).
    • The best performance was observed in Group IV, where the catheter tip reached the fourth duodenal segment in both phantoms.
    • In contrast, the catheter tip in Group I never reached the third duodenal segment, highlighting the sheath's benefit (p < 0.001).

    Conclusions:

    • The newly designed balloon sheath is feasible for clinical application in gastrointestinal procedures.
    • The device shows significant clinical potential for improving GI guidance and access.
    • Optimal performance was achieved with the inflated balloon positioned in the gastric body, suggesting its specific utility.