Mechanical valves, Biology

Assignment Help:

Mechanical Valves

They are made of a combination of metal alloys, pyrolite carbon and dacron.

Types of Mechanical Valves

Caged-ball Valve (Star-Edwards)

A metal cage with several struts mounted in a circular ring, hollow metal or plastic ball inside cage. Durability is high, but possibility of blood clots forming on or around the valve with the risk of embolism is high.

Tilting Disc Valve (Bjork-Shiley Medtronic Hall)

Mobile lens shaped disc attached to a circular sewing ring by two offset transverse struts. This has high durability and efficiency.

Bileaflet Valve

Two pivoting semi-circular discs that open centrally, mounted

(St. Jude)

Directly onto a sewing ring.


Related Discussions:- Mechanical valves

Define functions of magnesium - macro minerals, Define functions of magnesi...

Define functions of magnesium - Macro minerals? Like Ca, Mg too has a role in bone formation. Soft tissue magnesium functions as a cofactor of many enzymes involved in energy m

Define obesity - excessive fat intake, Define Obesity - Excessive Fat Intak...

Define Obesity - Excessive Fat Intake? In obesity, cutting down total energy intake or increasing output to ensure energy balance is the basic principle of prevention. Fat bein

Intracellular sodium concentration of the motor neuron, Intracellular sodiu...

Intracellular sodium concentration of the motor neuron A complete motor neuron is removed from a frog and placed in normal physiological saline at 1 AM.  The neuron is healthy.

What is the function of the vitellus in the vertebrate egg, Q. What is the ...

Q. What is the function of the vitellus in the vertebrate egg? How are these eggs classified according to the amount of vitellus within them? Vitellus (yolk) is the nutritive m

What are the hyphae and the mycelium of pluricellular fungi, What are the h...

What are the hyphae and the mycelium of pluricellular fungi? The major structures of pluricellular fungi are the hyphae (threadlike filaments made of contiguous uni or multinuc

Explain the modern trends in animal taxonomy, Explain the Modern Trends in ...

Explain the Modern Trends in Animal Taxonomy? Earlier you learnt how taxonomy is interrelated to other biological fields. You also learnt how information is used from other f

Skeletal system, why does each muscle need an antagonistic partner

why does each muscle need an antagonistic partner

Define the left cerebral cortex, Which of the following is true for a prima...

Which of the following is true for a primary motor cortex (M1) corticospinal interneuron that produces action potentials during movements of the big toe of the right foot? A. A

Mitosis and meiosis, briefly desribe the eggs and follicles in rabbit

briefly desribe the eggs and follicles in rabbit

Use of masks as personal protective equipment, Q. Use of Masks as personal ...

Q. Use of Masks as personal protective equipment? Masks are to be worn when procedures that result in aerosol production are performed. Protection from these masks only affords

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd