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 terms of incubation time and the generation time, If the generation ...

If the generation time (t) is the incubation time (t) per generation (G), or t = t/G, rewrite the formula you derived in question 2 for bacterial population growth in terms of incu

Action of carbon dioxide receptor cells, Action of carbon dioxide receptor ...

Action of carbon dioxide receptor cells The respiratory center is sensitive to increased carbon dioxide levels and increased acidity of the blood. It is peculiar that even tho

What is benedict's test and its principle, What is Benedict's Test and its ...

What is Benedict's Test and its Principle? This test is answered by all reducing sugars with a free aldehyde or ketone groups. Monosaccharides possess a free aldehyde or ketone

Relate osseointegration with biointegration, Osseointegration Vs. Biointegr...

Osseointegration Vs. Biointegration In 1985, dePutter observed that there are two ways of implant anchorage or retention: mechanical and bioactive. Mechanical retention refers

Skin puncture - specimen collection, Skin puncture: skin puncture is...

Skin puncture: skin puncture is usually done when small volume of blood is needed (e.g., blood glucose test) to avoid unnecessary venipuncture. However, skin puncture in

Poisoning - pesticide toxicity, P o i s on i n g P e sticide ...

P o i s on i n g P e sticide toxicity Chemical pesticides were introduced as an important tool for pest control and have been used extensively in human health ope

How are gases exchanged in sponges, How are gases exchanged in sponges? ...

How are gases exchanged in sponges? The gas exchange in sponges occurs by diffusion from the external to the cells that absorb molecular oxygen and release carbon dioxide.

Cranial nerves, The cranial nerves are composed of twelve pairs of nerves...

The cranial nerves are composed of twelve pairs of nerves which emanate from the nervous tissue of brain. In order to reach their targets they should ultimately exit/enter the cr

Aeration, Aeration is the process on which water and air come into contact....

Aeration is the process on which water and air come into contact. It is carried out by spraying water in the form of spray or fountain over air. Aeration achieves the following obj

Classification and features of echinodermata, Classification with its Justi...

Classification with its Justification Kingdom Animalia Animals, multi-cellular organisms with cells that lack a cell wall, many capable of movement or movement of some o

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