A polyamide resin with an excellent balance of mechanical characteristics such as breaking strength and breaking elongation in a solid state, a molded body containing said polyamide resin, a laminate provided with a film or a sheet containing said polyamide resin, a medical device provided with the aforementioned molded body and/or the aforementioned laminate, and a production method of the aforementioned polyamide resin are provided. A polyamide resin is used which contains: a linear aliphatic dicarbonyl unit as unit (a); a linear aliphatic diamino unit as unit (b); at least one of a unit (b) and a unit (c), each of a prescribed structure; and a trivalent unit (e).