Crisp neurovascular medical device logo

Neuravi medical (or simply "Neuravi")

We are a newly formed medical device R&D company, with a novel idea for a device to remove a blockage from the cerebral artery of a patient who has just suffered a stroke. The device will pass through a small tube (catheter) through the patients arteries from the groin up to the brain, where it will grab the clot that is causing the stroke and pull it out. The device needs to wrap down to a fraction of a millimeter and needs to be extremely flexible in order to pass through the tiny vessels of the brain.
Our values are very much focused on innovation and quality / attention to detail. We are small (only 3 employees) but highly experienced in this field.

The logo will be seen by those who will:
- sell our device (sales people)
- use our device (doctors and nurses)
- supply us with services or parts (engineering firms)
- look to invest in or purchase our company (venture capital firms or large medical device multinationals such as Abbott Vascular or Boston Scientific)

There is an existing but small market for this kind of device today. This is because there are only a few options available to stroke patients today, and none of them work well. Our device will be extremely effective and very easy to use. We believe this will create a situation which results in far more stroke patients being treated quickly and successfully, before the blockage has had a chance to cause them permanent harm.

The logo will be used on our presentation material, headed paper, business cards and product packaging.
It should be strong, crisp and clear, and should not be merely text based - please be creative!
Ideally (but not essential) it should bring to mind something associated with our company or device (i.e. medical, brain, cure, health, quality, hi-tech, flexibility, blood vessels......).
It should incorporate the words "Neuravi medical" or just the word "Neuravi".
I have attached a pdf doument with some examples of designs I like that I have seen on your website. The one in the bottom right is our current favorite - please beat this one to win the contest!