What is a Tuohy Borst adapter?

Tuohy-Borst Adapter. Used to prevent the backflow of fluid around an instrument inserted through the working channel of flexible and rigid ureteroscopes.

How does a Tuohy Borst valve work?

A tuohy borst adapter, which is a three-piece assembly comprised of a body, gasket and cap, is commonly used to prevent the backflow of fluid and facilitate catheter introduction. The silicone valve and cap torque around a tube or instrument to hold it in place.

What is a hemostasis valve?

A conventional hemostasis valve has a rotating seal at the end, which is turned open or closed each time a wire or microcatheter/guidewire is introduced or extracted. Often this results in significant back bleeding.

What is a hemostasis introducer?

Hemostatic Valve for all french sizes up to 18F for easy loading and prevention of backbleeding. Mesh braiding for excellent kink resistance and pushability. PTFE inner layer enables smooth and easy delivery of occluders and other devices.

What do you mean by hemostasis?

Hemostasis is your body’s natural reaction to an injury that stops bleeding and repairs the damage. This capability is usually for your benefit, conserving blood and preventing infections. In rare cases, the process doesn’t work as it should, and this can cause problems with too much or too little clotting.

What is a French sheath?

Sheath and dilator slide over a wire. • Sheath French size is a measure of its INNER diameter (and. determines which size catheter can fit in the sheath), unlike catheter. size, which is measured according to the outer diameter.

What are the 4 stages of hemostasis?

The mechanism of hemostasis can divide into four stages. 1) Constriction of the blood vessel. 2) Formation of a temporary “platelet plug.” 3) Activation of the coagulation cascade. 4) Formation of “fibrin plug” or the final clot.

What are the 5 stages of hemostasis?

Terms in this set (16)

  • Vessel Spasm.
  • Formation of Platelet Plug.
  • Blood Coagulation.
  • Clot Retraction.
  • Clot Dissolution (Lysis)

What is a Cobra catheter?

The Cobra catheter is typically used for catheterization of down-going vessels such as the visceral arteries, but it may not work well if the target vessel is steeply angled. Cobra-type catheters are advanced by pushing and removed by pulling.