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Design Philosophy
Pneumatic compression is a clinically proven modality for minimizing the risks
associated with deep vein thrombosis . ¹ The Aircast VenaFlow Elite System leverages
the same clinically proven technology as the existing VenaFlow offering, but is
presented in a low profile, light-weight design . VenaFlow Elite combines two proven
technologies, rapid inflation and graduated sequential compression, via our new
single tube Integrated Graduated Sequential Flow System (IGSF), to accelerate
venous velocity and enhance fibrinolysis . This unique combination makes VenaFlow
the only technology platform on the market that produces blood flows that mimic
those achieved through ambulation . ² Additionally, VenaFlow Elite incorporates
asymmetric compression for the superior emptying of veins . ³ The breathable and
comfortable VenaFlow Elite calf, foot and thigh cuffs enhance the patient experience,
assist in increasing compliance and are compatible with one universal pump .
Function
There are cuffs for the:
1) Foot
2) Thigh and
3) Calf
Either a single cuff on one leg or a cuff on each leg is allowed .
Once activated, the VenaFlow Elite system begins the compression cycle and inflates
the cuffs one leg at a time, alternating between the two legs every 30 seconds .
First the distal aircell inflates rapidly within less than 0 . 5 seconds, then the proximal
aircell follows .
Foot Cuffs: The pressure peaks at approximately 130mmHg +/- 10% .
Calf Cuffs: The distal pressure peaks at approximately 73mmHg +/-15%, and the
proximal pressure peaks at approximately 63mmHg +/- 15% .
Thigh Cuffs: The distal pressure peaks at approximately 73mmHg +/-15%, and the
proximal pressure peaks at approximately 63 mmHg +/- 15% .
These pressures then settle at 45mmHg ±10% and after 6 seconds, the cuff deflates .
In 54 seconds, the inflation cycle begins again . An icon will appear on the graphical
display signaling when the inflation cycle is in progress (See 'Pump Features'
section) . Pressure and the inflate/deflate cycle are automatic and an alarm will be
activated if the system is not functioning properly (See 'System Alarms' section) .
1 . Labropoulos N, OH D . S , Golts, E, et al: Improved Venous Return By Elliptical, Sequential and Seamless Air-
cell Compression . Loyola University Medical Center, January 2003 .
2 . Whitelaw G, Oladipo O, Shah BP, et al: Evaluation of Pneumatic Compression Devices . Boston Orthopedics,
March 2001 .
3 . Kamm R: Unsteady Venous Blood Flow Resulting From Different Modes of External Compression
Cambridge, MIT, 1996
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