During off-pump coronary artery bypass (OPCAB) the patient's myocardial contractions are slowed but not stopped. This procedure doesn't use a cross-clamp however it does require the use of a partial occlusion clamp.

Partial occlusions clamps, often called Kay-Lambert or Satinsky clamps, are used to create a bloodless field in order to perform the proximal anastamosis of a vessel graft to the aorta. This can be performed while the heart is beating in an OPCAB (Off Pump Coronary Artery Bypass) procedure.

Applied Medical is the market leader in padded Atraumatic Partial Occlusion.

Stealth Sidebite, Partial Occlusion Clamp.

• Surgeons typically choose to use metal clamps because of the slippery nature of the vessel, especially when it is beating.
• Metal clamps can damage the intima of the aorta and break pieces of plaque becoming lodged in smaller vessels downstream.
• Stealth Sidebite soft pads conform to the vessel, minimizing the risk of intimal damage and the breaking of plaque.
• The Fibra or latis mesh inserts engage the adventitia creating traction that is independent of pressure.