Delivering Patient-Specific Pressure

The goal of Zimmer Biomet’s surgical tourniquet systems is not just to stop patient blood flow – it’s to deliver the minimum amount of tourniquet pressure at a specific time, with a specific cuff, for a specific limb. Available with disposable or re-usable cuff options, our exclusive technology calculates the patient’s pressure at an individual level and then applies the minimum amount of tourniquet pressure needed to occlude the limb.

  • Personalized Pressure Technology
  • Limb Occlusion Pressure (L.O.P.)
  • Dual Port
  • Dual Cuff
  • Touchscreen User Interface
  • Lithium Ion Battery - 6 hours

No two patients are the same – that’s why our market leading tourniquet system, the A.T.S.® 4000, treats every patient with Personalized Pressure® Technology. Let’s discuss the ABCs of LOP

Absolute Minimum


 L.O.P. Technology was designed to calculate a patient’s pressure at an individual level and apply the minimum amount of tourniquet pressure needed to occlude a limb at a specific time for a specific patient.

Bloodless Field


 Tourniquet cuff pressures that are too low could result in bleeding distal to the cuff which can result in undesirable blood in the surgical field and blood loss. Hence, setting tourniquet pressures too low can cause pooling of blood in the field.



With the minimal time required, ease of use and well documented benefits of lower tourniquet pressures, the A.T.S. 4000 Automatic Tourniquet System offers the healthcare professional an option in setting the tourniquet cuff pressures while always keeping the final setting of pressure in the healthcare professional’s hands.


Limb Occlusion Pressure (L.O.P.)

  • Personalized Pressure Technology can help OR Staff choose a more individual, often lower, cuff pressure. Lower tourniquet cuff pressure reduces post-operative wound complications after Total Knee Arthroplasty (TKA).1

Line Occlusion Detection (Acoustic Reflectometry)

  • Technology that is intended to help identify a line occlusion between the machine and cuff. The technology decreases the unintentional risk of leaving pressure in a tourniquet cuff.

Cuff Alert

  • Technology intended to prevent setting the unit to STANDBY with pressure in the tourniquet cuff.

Automatic IVRA Cuff Lock Out

  • Technology that is intended to prevent accidental dual cuff release. Without additional steps or notification, the machine will prompt users to confirm the intent to deflate a second cuff. Improper deflations have resulted in serious injuries and death.

Advanced Leak Detection

  • Technology that monitors a cuff for minor variations intraoperatively with the intention of reporting potential cuff/hose leaks.

Pre-Op Cuff Test

  • Technology that allows for bedside testing of cuff pre-operatively to ensure proper function.

Personalized Pressure Technology

  • ersonalized Pressure can help surgeons choose a more individual, often lower, cuff pressure. Lower tourniquet cuff pressure reduces post-operative wound complications after TKA.1
  • Applying lower tourniquet pressure has been found to result in less post-operative pain. One study demonstrated that an average thigh tourniquet pressure of 230mmHG resulted in statistically significant lower pain over a multi-day recovery period versus a tourniquet pressure of 350mmHG.2
  • Minimizing tourniquet pressure and pressure gradients by using Personalized Pressure helps minimize the risk of nerve-related injuries.3


A.T.S.® 4000 Tourniquet System

Disposable Contour Cuffs

Additional Information

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For product information, including indications, contraindications, warnings, precautions, potential adverse effects and patient counseling information, see the package insert and information on this website. To obtain a copy of the current Instructions for Use (IFU) for full prescribing and risk information, please call 1-800-348-2759, press 4 for 411 Technical Support.