I browsed a book about how to cure fire arm wounds, written by a certain António D'Almeida, professor of surgery in Hospital S. José, in 1797, called Dissertação sobre o Método mais simples e seguro de curar as feridas das armas de fogo, (tr. Dissertation on the simplest and safer method for curing fire arms wound).
He makes a distinction between contusive and incisive wounds, besides the fire arm wounds (which one might suggest are also incisive if not contusive). He exemplifies the incisive wound with bayonet attacks.

Later on in the book, on pp. 26-27, he talks about the contusion:

"Da Contusão § XVI - A pizadura, ou contusão resultada dos corpos impellidos pela explosão da pólvora, humas vezes he complicação de huma
ferida, outras vezes existe sem ferida exterior".
(tr. Of the Contusion XVI - The bruise, or contusion resulting from the bodies expelled by powder explosion, sometimes is the complication of a wound, others it exists without an exterior wound".

He then goes on to say that if something is wrong underneath the contusion (hemorragy or fracture), one must open the contusion and deal with it.

I notice that sometimes wound is used as a broad word, covering both incisive and contusive, but normally contusion is used when there isn't rupture of the skin.

Jorge