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Laboratory Study on Injection Force Measurement on Syringe and Needle Combinations
Theddeus Octavianus Hari Prasetyono1,2, Prasasta Adhistana3
1Division of Plastic Surgery, Department of Surgery, Cipto Mangunkusumo Hospital/Faculty of Medicine Universitas Indonesia, Jakarta, Indonesia.
The Malaysian Journal of Medical Sciences : MJMS
|August 27, 2019
Summary
The 1 mL syringe with a 26G needle requires the least force for local anesthetic injections. This combination offers the best performance for initial and maintenance forces in medical procedures.
Area of Science:
- Medical Devices
- Physics of Fluids
- Anesthesiology
Background:
- Understanding injection forces is crucial for patient comfort and effective local anesthetic delivery.
- Syringe and needle characteristics significantly influence the forces required during injection.
Purpose of the Study:
- To quantify the initial and maintenance forces for various syringe and needle combinations.
- To establish a reference for optimal syringe-needle selection in local anesthetic administration.
Main Methods:
- An experimental study utilized an Instron 5940 Series compression testing machine.
- Syringes (1-20 mL) were tested with multiple needle types (27G, 27G spinal, 30G, original).
- Each combination underwent three trials, with data analyzed using One-way ANOVA.
Main Results:
- The 1 mL syringe paired with a 27G spinal needle exhibited the lowest initial force.
- The lowest maintenance force was observed with the 1 mL syringe and its original 26G needle.
- The 10 mL syringe and 30G needle combination demonstrated the highest initial and maintenance forces.
Conclusions:
- The combination of a 1 mL syringe and its original 26G needle is recommended.
- This combination offers the most favorable force profile for local anesthetic injections.
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