Thomas C. Prager, PhD, MPH introduced the first Prager Shell® for ultrasound biometry in 1982 to improve the accuracy of axial length measurement. In December 2002, Dr. Prager joined with ESI, Inc. to develop an improved Prager Shell® and other ophthalmic products. The Prager Shell® is currently being used in more than 4,000 ophthalmology clinics worldwide. Prager Shell®
• Prager Shell immersion biometry and optical biometry accuracy are clinically equivalent. • Immersion A-scan is not limited by media density. • Precise insertion and placement of the ultrasound probe into the Prager Shell. • Luer connector for easy replacement of used Prager Shell tubing Kit. • Clear shell for improved visibility. • A specific model for each manufacturer's biometer. ESI manufactures twelve Prager Shell® variations with each assigned a specific model number. The Manufacturer brand name and type of A-scan unit determines the correct Prager Shell® model required for immersion biometry. Every Prager Shell® model is individually designed according to the A-scan manufacturers' recommended specifications for accurate and consistent probe placement. The proprietary and patented (U.S. Patent 7,285,096) design automatically positions the ultrasound probe perpendicular, and at the correct distance from the eye, to insure an optimum scan. The Prager Shell® has two internal guide rings that maintain probe perpendicularity. These guide rings are vented to provide proper fluid flow and eliminate air bubble formation in the shell lower chamber. The transducer probe can only be placed at a fixed depth in the Prager Shell®. This auto-stop feature places the probe tip at the correct distance from the corneal surface. (Model numbers designated with P100 do not include this feature and require the probe tip to be placed at the score line and secured with the set-screw). All Prager Shell® models have a Luer adapter located on the side of the instrument for quick and simple replacement of the used and contaminated Prager Shell® tubing Kit. The Prager Shell® Kits are available only from ESI, Inc. Prager Shell® models are available for the following biometers: Model Number Ultrasound Companies: Autoclavable Prager Shell® Gold Series available by special order. Prager Shell® advantages:
• Manufactured to precision tolerances. • Auto-stop feature positions the ultrasound probe to the correct distance from the cornea for an optimum measurements. • Internal centering guides ensure the probe is perpendicular and correctly aligned in the shell, eliminating angle error. • Clear shell for the improved visualization of ocular shell placement and fluid level. • Luer connection for simple replacement of BSS infusion Kit. • Low-cost, sterile single-use replacement Kits reduces the chance of patient cross-contamination. Kits are available with one way flow check-valve (KIT B) or without check-valve (KIT A). • Eliminates need for expensive ultrasound gel. • • Prager Shell® Package Price: $280.00 Prager Shell® Mini Package Price: $260.00 Kit B
$57.50 per box 25 Kits per box.
$51.25 per box 25 Kits per box. $22.00 with initial order of 50 Kits (Offer limited to one tray per clinic shipping location) Product Information Recommended Articles Recommended Courses Click photo to enlarge Prager Shell® Storage/Cleaning Tray Prager Shell® Kit B
Prager Shell® Immersion Biometry:
P-100 Accutome / Micro Medical Device
P-100-OCU Ocuserv
P-101 DGH
P-102 Tomey
P-103 Sonomed / Innovative Imaging / OPKO-OTI
P-103SV Sonomed / Innovative Imaging / OPKO-OTI
P-104 Quantel
P-104 SV Quantel SV 12.5mm diameter
P-107-2 Nidek
P-105 Alcon OcuScan
P-110 RXP Alcon RXP and UltraScan
P-110 RXP SV Alcon RXP and UltraScan 12.5mm diameter
Ordering Information and Product List:
includes Storage/Cleaning Tray and (one box) Kit B
includes (one box) Kit B:
Designed for infusing BSS into the Prager Shell®. Each end of the tubing has a different type of Luer connector. The larger diameter Luer connector contains a one-way check valve to prevent back flow of patient contaminated fluid into the BSS source. Minimize the potential of patient cross contamination by using a new sterile Kit B with each patient. Kit B is for single patient use and should be discarded after patient exam. Kit B supplies are available only from ESI, Inc.
Kit A
Does not have the one-way flow check valve for preventing back flow into the BSS source. Kit A should be used only with a syringe and not a squeeze bottle due to the potential of contaminated BSS back flow. Kit A is for single patient use and should be discarded after patient exam. Kit A is ordered directly from ESI, Inc..
Storage/Cleaning Tray:
Custom tray holds shell and probe for storage and soaking in an aseptic solution after patient use. Protects the Prager Shell® from damage or loss. Price: $44.00
$11.00 with initial order of 100 Kits (Offer limited to one tray per clinic shipping location)
Resource Center
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