Experimental vascular protective shield combined with vacuum sealing drainage prevents pressure on exposed vessels and accelerates wound repair

Abstract

Background: The sustained negative pressure created by vacuum sealing drainage (VSD) on exposed vascular wounds can result in blood vessel compression, embolism, or necrosis. The objective of this research was to explore the ability of an experimental vascular protective shield combined with VSD to protect exposed vessels of the lower limbs and accelerate wound repair.Methods: (I) The vascular protective shield was prepared; (II) the material was subjected to acute toxicity and hemolysis tests; (III) and 30 New Zealand rabbits were divided into three groups: the control, VSD-only, and combined shield-VSD groups (with ten rabbits in each group). The wound-healing rate, myocardial function, wound histopathology, expression of angiogenesis markers, and exposed vascular compression of these three groups were compared on day 7.Results: (I) The internal structure of the material was smooth; and (II) no toxicity or death was observed in mice of any group. The hemolysis rate in the combined shield-VSD group was very low. (III) The combined shield-VSD group showed a higher wound-healing rate, and higher levels of cluster of differentiation 31 (CD31), vascular endothelial growth factor (VEGF), and platelet-derived growth factor (PDGF), than the other groups (P<0.05), along with a better tissue healing rate. (IV) Left ventricular pressure fluctuations in the combined shield-VSD group were smaller than those in the VSD-only group (P<0.05). (V) Blood vessels in the control and combined shield-VSD group were not damaged, but were damaged in the VSD-only group. Conclusions:The experimental vascular protective shield exhibited exceptional biosafety. The combination of this shield with VSD reduces influences on systolic and diastolic capacities of myocardium and avoids multiple compressions of exposed vessels, thus contributing to early vascularization of wounds and wound repair.

Effect of vacuum sealing drainage on healing time and inflammation‐related indicators in patients with soft tissue wounds

“…However, clinically, it is worth noting that because of the complexity of the soft‐tissue wound, such as the irregular shape and different depths of the wound, the application of VSD is prone to a situation where the material is not fully applied to the wound and the wound is difficult to seal. Furthermore, it was reported that the combination of an experimental vascular protective shield with VSD could reduce influences on systolic and diastolic capacities of the myocardium and avoid multiple compressions of exposed vessels, thus contributing to early vascularisation of wounds and wound repair 29 …”

“…Furthermore, it was reported that the combination of an experimental vascular protective shield with VSD could reduce influences on systolic and diastolic capacities of the myocardium and avoid multiple compressions of exposed vessels, thus contributing to early vascularisation of wounds and wound repair. 29 …”

Accelerated Angiogenesis of Human Umbilical Vein Endothelial Cells Under Negative Pressure Was Associated With the Regulation of Gene Expression Involved in the Proliferation and Migration

“…We previously reported improvement of wound healing by NPWT after surgical treatment, including skin grafts 4,5 . The effects of NPWT include physical contraction of the wound, removal of edema from the wound bed, maintenance of a moist wound environment, induction of cytokines, and promotion of angiogenesis 6,7 . However, the precise mechanisms responsible for the improvement in wound healing by negative pressure remain largely unknown.…”