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

Indifferences in ionic composition, Indifferences in ionic composition Answ...

Indifferences in ionic composition Answer A. across membranes can be created through the action of ATP driven pumps as long as number of negative and positive ions on remain equal

State the young''s trichromatic theory, Young's Trichromatic Theory Ac...

Young's Trichromatic Theory According to Young's theory, three types of cones exist, each sensitive to a particular pigment-rythrolabe (red), chlorolabe (green), and cyanolabe

Explain insect resistant crops in evolutionary way, Explain Insect resistan...

Explain Insect resistant crops in Evolutionary way Insects are a natural selection pressure so plants resistant to certain insects could have an evolutionary advantage (in

Express krebs cycle photosystem ii, Calvin cycle electron transport chain g...

Calvin cycle electron transport chain glycolysis Kreb's cycle photosystem II.

What do you mean by osteichthyes and condrichthyes, Q. From which features ...

Q. From which features do osteichthyes and condrichthyes get these names? "Chondros" means cartilage, "ictis" means fish (both from the Greek) the name chondrichtians is for fi

How do schistosomes differentiate regarding sex separation, Q. How do schis...

Q. How do schistosomes differentiate regarding sex separation? The Schistosomes are dioecious that is the species has separated sexes, female and male individuals.

Explain the indole production test, Explain the Indole Production Test? ...

Explain the Indole Production Test? Many microorganisms produce an enzyme tryptophanase which oxidizes amino acid tryptophan to produce pyruvic acid, indole and ammonia. We can

Fusarium toxins, Another important genus of mycotoxin producers is Fusarium...

Another important genus of mycotoxin producers is Fusarium, many species of which produce members of the trichothecene family of mold metabolites like deoxynivalenol, neosolaniol a

Explain the requirements of special stains, Explain the requirements of Spe...

Explain the requirements of Special Stains? Special stains are required to make spores clearly visible. Different techniques like negative staining, dorner staining method, sch

Define the growth charts of infant, Define the Growth Charts of Infant? ...

Define the Growth Charts of Infant? Besides identifying growth faltering, growth charts also provide the following information: 1) The growth is considered normal or satisfa

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