In vitro evaluation of wire integrity and ability to reprocess single-use sphincterotomes.
BACKGROUND
Sphincterotomes are currently marketed as one-time-use items and constitute considerable cumulative expense in a busy endoscopy unit. It is uncertain whether these accessories can be safely reprocessed without loss of form and function.


METHODS
We studied disposable sphincterotomes (five 5F, five 6F) in vitro as to their durability, electrical integrity, and ability to be adequately cleaned both manually and with ethylene oxide after contamination with 10(5) to 10(6) Mycobacterium chelonei.


RESULTS
Seven of the 10 sphincterotomes withstood the rigors of reuse; three 6F sphincterotomes developed wire fracture between four and eight uses. Electrical integrity, as measured by an electrosurgical analyzer, remained intact up to time of breakage in all sphincterotomes. Manual cleaning followed by glutaraldehyde soak resulted in residual mycobacterial colonies in five 6F sphincterotomes and a single 5F sphincterotome. No instrument had residual organisms cultured following manual cleaning and ethylene oxide sterilization.


CONCLUSIONS
The authors conclude that one-time-use sphincterotomes have the potential for safe reuse.
Kozarek
R A
RA
Section of Gastroenterology, Virginia Mason Medical Center, Seattle 98111, USA.
Sumida
S E
SE
Raltz
S L
SL
Merriam
L D
LD
Irizarry
D C
DC
D004553:Electric Conductivity; D004866:Equipment Contamination / Q000706:statistics & numerical data; D004867:Equipment Design; D004868:Equipment Failure; D017743:Equipment Reuse; D004869:Equipment Safety; D016717:Sphincterotomy, Endoscopic / Q000295:instrumentation*; D013242:Sterilization