机械水蛭吸血效果更佳

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如果您和大多数人一样,仅仅提到“水蛭”这个词就会让您厌恶地皱起眉头。但想象一下,作为治疗方案的一部分,您不得不让这些寄生虫附着在您身上。事实上,所谓的医用水蛭是预防整形外科术后血液凝固的标准工具。然而,科学家们可能已经找到了一种超越大自然凝血剂的方法:一种新开发的机械水蛭比其活体同类吸血效果更好。而且,它还消除了“令人作呕”的因素。

这种新颖的装置由威斯康星大学的研究人员创建,由一个微小的玻璃外壳、一个真空和一个将抗凝血剂肝素输送到受影响组织的管道组成。“真正的水蛭能做到的和我们的机械水蛭能做到的之间有很大的区别,”共同发明人迈克尔·孔福蒂指出。“真正的水蛭只能渗透到一定的深度。我们的装置可以在皮肤下更深层发挥作用,进入更大的血管,并治疗更大面积的组织。” 机械水蛭也没有一些水蛭在治疗过程中可能引入的细菌。

然而,团队成员纳丁·康纳对这种吸血小工具的好处有不同的看法。“也许这种机械装置最大的优势在于它不是水蛭,”她评论道。“人们不希望这种令人作呕的生物挂在他们身上。这种额外的心理压力对于患者和家庭成员来说都加剧了本已困难的局面。”

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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