underwater seal

underwater seal

a seal formed by water allowed to flow over a tube that exits from the chest cavity of a patient. The water acts as a one-way valve and permits the outflow of air but prevents the ingress of air. Also called water trap.
References in periodicals archive ?
Underwater Seal Chest Drains, Thoracic Catheters, Heimlich Valves, Percutaneous Drainage & Mobile Suction Units
AN underwater seal video filmed by a Northumberland GP which featured in The Journal last Saturday has received more than 184,000 online hits.
It can be used with disposable chest drainage units that incorporate an underwater seal, and it features a pressure relief mechanism to minimize the potential for tension pneumothorax.
With over 30 ship builders and maritime repair centers, the Trident office will sell and demonstrate the use of the Sea Patch and Underwater Seal in the field.
Navy Seal who will demonstrate and sell the Sea Patch and Underwater Seal.
Trident (Louisiana) will provide the maritime industry with both the "know how" and the solution in the Sea Patch and Underwater Seal to aggressively combat oil leaks and spillage in the Gulf Coast.
Coast Guard is testing the new and re-engineered Underwater Seal and Sea Patch based upon their environmental and disaster applications in the maritime industry.
20 including cost of goods sold due to the development and marketing costs of the Underwater Seal and the Sea Patch for the London maritime industry show in December 1998.
In addition, we have the capital to complete modifications to the Gripper and Underwater Seal technologies.
In addition, or Gripper and Underwater Seal technology should be coming on board with greater sales in 1998-1999.

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