預(yù)灌封注射器作為現(xiàn)代醫(yī)療領(lǐng)域中廣泛應(yīng)用的給藥裝置,其密封性和安全性直接關(guān)系到藥品的質(zhì)量和患者的健康。為確保預(yù)灌封注射器在使用過(guò)程中不發(fā)生泄漏,各國(guó)及國(guó)際組織制定了嚴(yán)格的泄漏檢測(cè)標(biāo)準(zhǔn)。本文將詳細(xì)介紹預(yù)灌封注射器泄漏檢測(cè)的相關(guān)標(biāo)準(zhǔn)。
一、國(guó)際標(biāo)準(zhǔn) ISO 11040系列標(biāo)準(zhǔn) ISO 11040系列標(biāo)準(zhǔn)是針對(duì)預(yù)灌封注射器的國(guó)際標(biāo)準(zhǔn),其中涉及泄漏檢測(cè)的主要包括: ISO 11040-4:2015 預(yù)灌封注射器 第4部分:玻璃注射器筒:該標(biāo)準(zhǔn)詳細(xì)規(guī)定了玻璃預(yù)灌封注射器的性能要求,包括封閉系統(tǒng)的液體滲漏測(cè)試。通過(guò)模擬注射器灌封及運(yùn)輸過(guò)程中可能遇到的壓力條件,評(píng)估封閉系統(tǒng)是否能夠有效防止液體滲漏。 ISO 11040-6:2019 預(yù)灌封注射器 第6部分:塑料注射器筒:與ISO 11040-4類似,但針對(duì)塑料注射器筒,同樣包含了泄漏檢測(cè)的相關(guān)要求。 ISO 11040-8:2016 預(yù)灌封注射器 第8部分:成品預(yù)灌封注射器要求與測(cè)試方法:該標(biāo)準(zhǔn)提供了成品預(yù)灌封注射器的全面測(cè)試方法,包括泄漏檢測(cè),確保產(chǎn)品在出廠前符合質(zhì)量要求。 ISO 80369系列標(biāo)準(zhǔn) ISO 80369系列標(biāo)準(zhǔn)涉及醫(yī)用液體和氣體用小孔徑連接件,其中ISO 80369-20《醫(yī)用液體和氣體用小孔徑連接件第20部分:通用試驗(yàn)方法》為預(yù)灌封注射器的魯爾圓錐接頭泄漏檢測(cè)提供了通用試驗(yàn)方法。
二、國(guó)內(nèi)標(biāo)準(zhǔn) 中國(guó)藥典 4040 預(yù)灌封注射器魯爾圓錐接頭檢查法:該標(biāo)準(zhǔn)詳細(xì)規(guī)定了預(yù)灌封注射器魯爾圓錐接頭的測(cè)試項(xiàng)目,包括正壓液體泄漏試驗(yàn)、應(yīng)力開(kāi)裂試驗(yàn)、抗軸向負(fù)載分離試驗(yàn)、抗旋開(kāi)扭矩分離試驗(yàn)(僅適用于魯爾鎖定圓錐接頭)和抗過(guò)載(滑絲)試驗(yàn)(僅適用于魯爾鎖定圓錐接頭)。這些試驗(yàn)共同確保了魯爾接頭的可靠性與安全性。 4041 預(yù)灌封注射器組件密封性檢查法:2025版中國(guó)藥典新增了該標(biāo)準(zhǔn),專門用于檢查預(yù)灌封注射器護(hù)帽與套筒、活塞與套筒的密封性。通過(guò)模擬充裝過(guò)程或運(yùn)輸過(guò)程中注射器內(nèi)可能產(chǎn)生的潛在過(guò)壓,評(píng)估注射器的密封性能。
行業(yè)標(biāo)準(zhǔn) YBB系列標(biāo)準(zhǔn):如YBB00112004-2015《預(yù)灌封注射器組合件(帶注射針)》等,這些標(biāo)準(zhǔn)對(duì)預(yù)灌封注射器的各個(gè)組件(如玻璃針管、橡膠活塞、不銹鋼注射針等)的性能和質(zhì)量提出了具體要求,包括密封性測(cè)試。
三、泄漏檢測(cè)方法與設(shè)備 正壓液體泄漏試驗(yàn) 方法:將預(yù)灌封注射器吸入一定量的水,干燥接頭外表面后,通過(guò)施加軸向力和扭矩組裝魯爾接頭。然后,通過(guò)標(biāo)準(zhǔn)測(cè)試接頭的小孔對(duì)組裝件施加一定壓力的水壓,并保持一段時(shí)間,目視檢查連接處是否有液體泄漏。 設(shè)備:LT魯爾接頭性能測(cè)試儀,可自動(dòng)完成正壓液體泄漏試驗(yàn)等測(cè)試項(xiàng)目。
護(hù)帽與套筒密封性檢查法 方法:將預(yù)灌封注射器充裝一定量的水,封閉注射器末端并預(yù)留加壓氣道。通過(guò)施加一定壓力的氣體或液體,觀察護(hù)帽是否脫落或發(fā)生泄漏。 設(shè)備:如LSSD泄漏與密封強(qiáng)度測(cè)試儀,可精確控制壓力值與保壓時(shí)間,確保測(cè)試結(jié)果的準(zhǔn)確性。
活塞與套筒密封性檢查法 方法:將超過(guò)預(yù)灌封注射器標(biāo)示裝量的水抽入注射器,排出空氣并將注射器中的水量調(diào)節(jié)至標(biāo)示裝量處。從垂直于推桿的角度向按手施加側(cè)向力,使推桿定位在與軸向活塞成最大偏轉(zhuǎn)的位置。然后向注射器施加軸向力,通過(guò)活塞和套筒的相對(duì)運(yùn)動(dòng)產(chǎn)生規(guī)定壓力,保持一段時(shí)間后檢查注射器是否有通過(guò)活塞的液體泄漏。 設(shè)備:如MST注射器密合性測(cè)試儀,采用高精度力值傳感器和壓力傳感器,保證測(cè)試精度。
四、總結(jié) 預(yù)灌封注射器的泄漏檢測(cè)是確保其安全性和有效性的重要環(huán)節(jié)。通過(guò)遵循國(guó)際和國(guó)內(nèi)的相關(guān)標(biāo)準(zhǔn),采用科學(xué)的檢測(cè)方法和先進(jìn)的檢測(cè)設(shè)備,可以有效評(píng)估預(yù)灌封注射器的密封性能,為患者的健康保駕護(hù)航。
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