You can certainly be held liable for damages that you caused but if the deposit exceeds the value of the damages you are entitled to that difference.

Damages are too limited to justify the expense of a lawsuit where you would need to hire an expert to testify regarding hematologic lab practices.

Unfortunately, I do not believe that there would be a basis for you to sue, even assuming that they failed to perform their duties.

It would cost more to sue than what is likely compensation to be the sum total value of your damages. Should damages become more significant then...

If you can get a physician to testify that there was a breach from accepted standards of care that caused your injuries you may have a case, but...

Assuming you are suing Walmart for the trip and fall, they then are responsible for all the damages you suffered as a result. As trip and fall...

Was it guaranteed to work? The failure rate of these devises is a known entity and may be the fault of the product, the surgeon or some other...

There are likely time constraints/statute of limitations considerations that have lapsed. Confirm with local counsel.

You can sue, but is it worth it? Does this guy have assets or insurance that are sufficient enough to sue him?

If you have no injury then get the jewelry appraised and if it is worth anything you are a big winner!!