DJO VENAFLOW Elite - Design Philosophy; Function

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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 oering, but is
presented in a low prole, light-weight design. VenaFlow Elite combines two proven
technologies, rapid ination and graduated sequential compression, via our new
single tube Integrated Graduated Sequential Flow System (IGSF), to accelerate venous
velocity and enhance brinolysis. This unique combination makes VenaFlow the
only technology platform on the market that produces blood ows 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 cus enhance the patient experience, assist in
increasing compliance and are compatible with one universal pump.
Function
There are cus for the:
1) Foot
2) Thigh and
3) Calf
Either a single cu on one leg or a cu on each leg is allowed.
Once activated, the VenaFlow Elite system begins the compression cycle and inates
the cus one leg at a time, alternating between the two legs every 30 seconds. First
the distal aircell inates rapidly within less than 0.5 seconds, then the proximal aircell
follows.
Foot Cus: The pressure peaks at approximately 130mmHg +/- 10%.
Calf Cus: The distal pressure peaks at approximately 73mmHg +/-15%, and the
proximal pressure peaks at approximately 63mmHg +/- 15%.
Thigh Cus: 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 cu deates.
In 54 seconds, the ination cycle begins again. An icon will appear on the graphical
display signaling when the ination cycle is in progress (See 'Pump Features' section).
Pressure and the inate/deate 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DierentModesofExternalCompressionCambridge,
MIT, 1996