The classification of the recall as Class I by the FDA signifies the highest level of risk associated with a medical device recall, indicating a situation where there is a reasonable probability that the use of, or exposure to, the recalled product will cause serious adverse health consequences or death. This classification, coupled with the reported injuries, is likely to have a negative impact on Medtronic's reputation, potentially affecting its stock price in the short term due to concerns over product safety and potential financial liabilities.