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Guide wire distance marks for oesophageal dilatation.

¹University Hospital of South Manchester, Didsbury.

|May 1, 1990

Summary

Chemically etched distance marks on oesophageal guide wires help detect guide wire retraction during dilation. This improves safety by quickly recognizing potential dilator impaction on the wire tip.

Area of Science:

Gastroenterology
Medical Devices
Surgical Innovation

Background:

Oesophageal dilatation is a common procedure for treating oesophageal strictures.
Standard oesophageal guide wires lack visual cues for precise positioning during dilatation.
Potential complications include guide wire retraction and dilator impaction, posing risks to patients.

Purpose of the Study:

To describe the addition of chemically etched distance marks to standard oesophageal guide wires.
To enhance the recognition of guide wire retraction during oesophageal dilatation.
To improve the early detection of impending dilator impaction onto the guide wire tip.

Main Methods:

Standard oesophageal guide wires were modified by applying chemically etched distance markings.

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The modified guide wires were evaluated during simulated and/or clinical oesophageal dilatation procedures.

The visibility and utility of the distance marks for monitoring guide wire position were assessed.

Main Results:

Chemically etched distance marks provide clear visual indicators of guide wire position.
The markings facilitate quick and easy recognition of guide wire retraction.
Impending dilator impaction onto the flexible wire tip can be readily identified.

Conclusions:

Chemically etched distance marks on oesophageal guide wires represent a simple yet effective safety enhancement.
This modification aids endoscopists in managing guide wire dynamics during oesophageal dilatation.
The improved visibility reduces the risk of procedural complications associated with guide wire mispositioning.