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| Model F
Suture-Down Transducer This transducer consists of a piezoelectric crystal bonded with medical grade silicone to a 2-cm-square pad of closely-woven acrylic. The crystal is approximately 1 mm diameter and mounted at a 45-degree angle. The crystal is encased in medical grade epoxy with an epoxy lens. The active surface faces left as you stand at the lead side with the pad on top.
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| Model
H
Hand-Held Wand Transducer The crystal is mounted at the end of a two-stage tubular stainless steel probe. The overall length of the probe is 120 mm. The tip dimensions are: 2.8 mm diameter by 35 mm long. The handle dimensions are: 4.8 mm diameter by 85 mm long. The shielded plastic jacketed leads exit the handle with a silicone strain relief. The crystal is approximately 1 mm diameter and is embedded in epoxy with an epoxy lens. The crystal is oriented at 45-degrees to the axis of the probe handle. This transducer can be used as an effective way to check arterial shunt preparations (carotid, etc.).
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| Model
N
Micro Vessel Needle This transducer consists of a Doppler crystal mounted on the end of a section stainless steel hypodermic tubing 6 cm long. The crystal is approximately 1 mm diameter and mounted at a 45-degree, 90-degree, or 180-degree angle. The crystal is encased in medical grade epoxy with an epoxy lens. It is used for chick embryo studies, or any other study where the vessel is small or in close confinement. A microminipulator is often used for placement of this probe. We offer it with a choice of three crystal mounting angles. The choice depends on the experimental set-up and the needle mounting. Whatever the choice, the end result should be an angle such that the sound is directed into the flow and at an angle 45 degrees to the flow. See drawing below.
Proper Ultrasound Angle 
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| Model
P
Knife-Edge Transducer This transducer consists of a piezoelectric crystal approximately 0.4 mm by 1.6 mm. A clear epoxy lens envelops the entire crystal. This configuration was developed for microvascular application in acute experimentation. Vessels as small as 200 microns can be chosen for study. With careful surgical preparation, our tiny probe can be slipped into place for accurate blood velocity measurements. Our engineers have provided similar expertise in developing means for measuring pial artery blood flow velocity. The study done has since been published. See application guide for further details.
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| CAUTION:
These products are NOT intended for use on human subjects. IDP assumes no liability for their clinical application. |
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