A loss of resistance syringe (LOR syringe) is fitted to the epidural needle to find the epidural space. This 5 ml model has a balloon indicator: the balloon is inflated before the needle advances and deflates when the tip enters the epidural space. The loss of resistance is seen as well as felt. It is single use.
This page is intended for healthcare professionals.
A 5 ml loss of resistance syringe with a balloon indicator: the balloon is inflated before the needle advances and deflates when the tip reaches the epidural space, so the moment is seen as well as felt.
In the loss of resistance technique the resistance is watched while the epidural needle advances. The moment the tip enters the epidural space shows as a fall in resistance, and that moment is the endpoint. With a balloon indicator syringe the same moment is seen as the balloon deflates.
This balloon indicator syringe is filled with about 5 ml of saline, and the balloon is inflated by pushing the plunger to the 2 ml mark. For any other syringe, the choice of air or fluid follows the technique of the physician.
The balloon deflating is a visible endpoint, so the operator is not the only person reading it: the resident or nurse standing with them can see it too. It is also used on a difficult back, where the tactile endpoint is hard to read alone, and for teaching the technique. The stated balloon pressure deviation is 3 kPa.
Four steps: check the syringe is intact and fill it with about 5 ml saline, remove the stylet and connect the syringe tightly to the epidural needle, push the plunger to the 2 ml mark so the balloon inflates, then advance the needle slowly without moving backward. The balloon deflating promptly is the endpoint.
One volume, 5 ml, with the order code ILOR005. The pressure held in the balloon has a deviation of 3 kPa.
The price depends on the quantity and the delivery terms. We do not publish a list price on this page. Write to us and we will prepare a quote.
Write to us. We supply this Tuoren Medical syringe from Istanbul and answer international enquiries; availability, documents and lead times are confirmed for your country. Use the Request an export quote button in the Export and Bulk Orders section of this page, and give the order code (ILOR005), the quantity and the destination country. We do not publish a list price on this page. The HS (customs tariff) code is confirmed with the quote.
Based in Istanbul, Türkiye, we supply hospitals nationwide and answer international enquiries. Ask us about availability, documentation and lead times in your country.
Updated: 09.11.2026
