User's Manual

Table Of Contents
109
 nde
 Transducer Covers
InnoSight Ultrasound System
P6992-4, EN, 16/12/6
Speckle appears as tissue texture close to the transducer but does not correspond to scatterers in tissue It
is produced by ultrasound wave interference and results in general image degradation
Spectral broadening is a display phenomenon that occurs when the number of energy-bearing Fourier
frequency components increases at any given point in time As a consequence, the spectral display is
broadenedSpectral broadening can indicate the disturbed flow caused by a lesion, and therefore it is
important diagnostically However, broadening can also result from interaction between flow and sample
volume size, in which case it is an artifact
Speed of sound artifacts occur if the sound propagation path to a reflector is partially through bone, and
the speed of sound is greater than in the average soft tissue Echo position registration artifacts will be
produced Reflectors appear closer to the transducer than their actual distance because of this greater
speed of sound, resulting in a shorter echo transit time than for paths not containing bone
Transducer Covers
To prevent contamination by blood-borne pathogens, sterile transducer covers are required for
intraoperative procedures in China, sterile covers are also required for transrectal and intravaginal
procedures the protective covers are mandatory in China and apan We recommend the use of qualified
covers
Latex and talc are commonly used in sheaths marketed to help with infection control in endocavity
and intraoperative imaging applications Examine the packaging to confirm latex and talc content
Studies have shown that patients can experience allergic reactions with natural rubber latex See
the FDA Medical Alert, March 29, 1991, reprinted in FDA Medical Alert on Latex on page 21
In intraoperative applications, sterilized transducers should be used with sterile gel and a
sterile transducer cover
Sterile transducer covers are disposable and must not be reused
Inspect transducer covers before and after use
Do not apply the transducer cover until you are ready to perform the procedure
If an installed transducer cover is cut or contaminated before use, the transducer should be
cleaned and disinfected or sterilized, and a new sterile cover installed
When using C9-4v endocavity transducers, the transducers must be protected with a transducer
sheath
If a sterile transducer cover becomes compromised during an intraoperative application involving
a patient with transmissible spongiform encephalopathy, such as Creutzfeldt-akob disease,
follow the guidelines of the US Centers for Disease Control and this document from the World
Health Organization: WHO/CDS/ APH/2/3, WHO Infection Control Guidelines for Transmissible
Spongiform Encephalopathies The transducers for your system cannot be decontaminated using
a heat process