Figure 1
From: Dissection and hemostasis with hydroxilated polyvinyl acetal tampons in open thyroid surgery

Minor bleeding control using HPA tampon, during thyroidectomy. The porous design of the tampon allows performing an effective aspiration of blood and unwanted fluid, by positioning the tampon directly on the bleeding surface (for example, close to RNL) and using the suction device right through the tampon itself.