The blade mine would be a Buzzsaw mixed with a mine. The blade mine would be made in a "blade mine factory" and could be carried by one crew member. The blade mine would be launched from a missile launcher. If an enemy approached a blade mine the mine would begin to float towards the enemy ship. It would also begin to spin at this point. Once it comes into contact with the enemy it will deal melee damage to what it has hit. Unlike regular mines it would be reusable.
I was partially inspired by that these are in Star Trek Discovery.