the name you can trust

Here is only one word
turned to a name is "warranty"
And we give warranty for our products
bcaz we have a trust about its quality
And we made it.
That is the name every one can trust.
But no one gives warranty or guaranty for us
Any time we will find our end,
Medics are unable to find it
And they are helpless
Here is only one thing without warranty
That is human being...