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Rhys-Davies exsanguinator: pressure characteristics and technique for improving performance
P C Harris1, D Atkinson, R A Evans
1Department of Orthopaedic Surgery, University Hospital Aintree, Liverpool, UK. christian.harris@tesco.net
Journal of Hand Surgery (Edinburgh, Scotland)
|December 7, 2000
Summary
The Rhys-Davies exsanguinator applies pressure to both the palm and dorsum of the hand. Adding a fluid bag to the palm increases this applied pressure.
Area of Science:
- Medical Devices
- Human Anatomy
- Surgical Procedures
Background:
- The Rhys-Davies exsanguinator is used in surgical procedures.
- Understanding pressure distribution on the hand is crucial for patient safety and device efficacy.
Purpose of the Study:
- To investigate the pressure distribution of the Rhys-Davies exsanguinator on the palm and dorsum of the hand.
- To determine if the palm is shielded from the device's full pressure.
- To evaluate the effect of a fluid bag in the palm on pressure application.
Main Methods:
- Experimental investigation of pressure exerted by the Rhys-Davies exsanguinator.
- Measurement of pressure on both the palm and dorsum of the hand.
- Comparison of pressure with and without a fluid bag in the palm.
Main Results:
- The study found that the exsanguinator exerts pressure on both the palm and the dorsum of the hand.
- Contrary to hypothesis, the palm is not fully shielded from the device's pressure.
- Placing a fluid bag in the palm significantly increased the pressure applied to this area.
Conclusions:
- The Rhys-Davies exsanguinator applies significant pressure to the palmar aspect of the hand.
- Interventions such as using a fluid bag can modify and increase palmar pressure.
- Further research may inform optimal device usage and patient positioning.