自体富血小板血浆治疗下肢慢性创伤及骨不连的研究

Patients with chronic wounds frequently undergo repetitive debridement without a definitive outcome because of the scarcity of growth factors. Platelet-rich plasma (PRP) has been shown to enhance tissue healing with multiple growth factors. We evaluated the clinical effects of PRP in the treatment of chronic wounds. Seventeen patients with chronic wounds on the lower limbs were treated with the application of autologous PRP twice at a 2-month interval to close the wound and control infection. We found that the average volume of the chronic wounds significantly decreased. In addition, 10 of the 17 patients had complete wound coverage and another 6 patients had >50% wound coverage. Fracture reunion was also observed in 6 of the 10 patients with complete wound coverage. PRP treatment also dramatically reduced the positive results of bacterial culture, from 82.4% to 11.8%. Therefore, we concluded that PRP treatment can efficiently facilitate chronic wound healing and be considered an effective treatment during the management of some complicated chronic wounds.     

KDF2开机增塑剂补偿部分的改进

KDF2成型机原型机开机增塑剂补偿部分在实际生产中出现的使用寿命短、维护量大、频繁开机过程中动作失效对滤棒开机质量造成影响。针对以上情况,本文进行原因分析,并对补偿部分重新进行设计的情况以及使用前后对照进行介绍。