Hi everyone Im making a new product that adjusts blood temperature It a needle that takes blood from a vein and heats or cools it and then a second needle puts the blood in a second vein at the different temperature It has many benefits but when i talk to product designers Were having a hard time saying A vein makes 473ml of blood in 10 minutes Meaning 47ml every 1 minute So the glass container the blood goes in needs to be x size to hold enough blood that is cooled and heated the right time Easy to fix Hopefully one of you will like to take part in developing the device with me Let me know what you think Thanks a lot James
