１８世纪末到１９世纪初的欧洲， 由于受到科学发展的局限， 各国开发的救生器械总存在着少许的缺陷。但在当时对于救生工具的开发起步较晚的法国； 在吸取前人经验的基础上， 却开发出了较接近当代理念的救生工具。 From the end of the 18th century to the early 19th century in Europe, due to the limitations of scientific development, life-saving instruments developed in various countries always had some defects. However, at that time, France, which had started the development of rescue tools at a later stage, developed a life-saving tool that was closer to the contemporary concept, drawing on the experience of its predecessors.