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Efficacy of Gyrus diego® microdissector at varying oscillation speeds

Published online by Cambridge University Press:  13 March 2007

R J Sim ,
S McDonald  and
S Gillett
R J Sim*
Affiliation:
Southmead Hospital, Bristol, UK.
S McDonald
Affiliation:
Derriford Hospital, Plymouth, UK.
S Gillett
Affiliation:
Royal United Hospital, Bath, UK.
*
Address for correspondence: Mr R Sim, ENT Department, Southmead Hospital, Westbury on Trym, Bristol BS10 5NB, UK. Fax: 0117 959 5850 E-mail: ricsim@otol.freeserve.co.uk
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Abstract

Objective:

To determine the efficacy of the Gyrus diego® microdissector at increasing oscillation speeds, using an in vitro tissue model.

Background:

It had not previously been established whether microdissectors were more efficient at higher or lower speeds.

Methods:

We investigated the effect of varying microdissector oscillation speeds on the weight of material aspirated in a given time. A 4 mm straight blade was used with constant suction strength. Jelly and liver were used to simulate polyps and muscle plus connective tissue, respectively. Water was used as a control. Repeat readings were taken at speeds of 1000, 2000, 3000, 4000 and 5000 rpm. Data were analysed using linear bivariate regression.

Results:

The results showed significant linear trends in the cases of liver and jelly, with faster cutter speeds being associated with higher aspiration rates.

Conclusion. These results suggest that microdissector efficacy increases with speed, up to 5000 rpm.

Keywords

Surgical InstrumentsEndoscopic Surgical ProceduresNasal Polyps
Type
Main Article
Information
The Journal of Laryngology & Otology , Volume 122 , Issue 4 , April 2008 , pp. 388 - 390
Copyright
Copyright © JLO (1984) Limited 2007

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References

1 Ferguson, BJ, DiBiase, PA, D'Amico, F. Quantitative analysis of microdebriders used in endoscopic sinus surgery. Am J Otolaryngol 1999;20:294–7CrossRefGoogle ScholarPubMed
2 Dave, SP, Polak, M, Casiano, RR. Microdissectors used in functional endoscopic sinus surgery: secondary analysis and validation of a new tissue model. Laryngoscope 2005;115:1641–5CrossRefGoogle Scholar