注射劑用膠塞墊片穿刺力測定法是依據(jù)YBB00322004-2015標準規(guī)定的技術方法,用于量化注射劑用膠塞及墊片抗穿刺能力的標準技術。該方法通過模擬注射針垂直穿刺過程,測定刺透膠塞或墊片所需的最大力值(N),是評價藥品包裝密封完整性的核心指標。
詞條概要
注射劑用膠塞墊片穿刺力測定法是依據(jù)YBB00322004-2015標準規(guī)定的技術方法,用于量化注射劑用膠塞及墊片抗穿刺能力的標準技術。該方法通過模擬注射針垂直穿刺過程,測定刺透膠塞或墊片所需的最大力值(N),是評價藥品包裝密封完整性的核心指標。
核心原理
穿刺力:在垂直穿刺試驗中,穿刺器刺透膠塞或墊片時記錄的最大拉力值(N),反映材料抗穿刺性能。數(shù)值越低,材料越易被刺穿。
儀器裝置
第一法(50ml以上注射劑瓶)
材料試驗機:穿刺速度200mm/min±20mm/min,力值精度±2N
穿刺器:不銹鋼長針(1Cr18Ni9Ti,圖1),直徑需適配膠塞標記尺寸
配套設備:注射劑瓶(≥50ml)、鋁蓋/鋁塑蓋、手動封蓋機
第二法(50ml以下注射劑瓶)
材料試驗機:力值精度±0.25N,適配外徑0.8mm注射針(L型斜角12°±2°)
注射針:符合GB15811-2001標準,需經(jīng)丙酮擦拭處理
第三法(墊片專用)
墊片支撐裝置:鋼瓶夾持器(圖3)或等效裝置,容量≥50ml
穿刺器:金屬穿刺器(圖1)或塑料穿刺器(圖2),需檢查鋒利度
試樣制備
第一法預處理
裝瓶封口:10個注射劑瓶各加1/2公稱容量水,裝膠塞后封鋁蓋
高壓滅菌:121℃±2℃保持30分鐘,冷卻至室溫
第二法預處理
膠塞處理:煮沸5分鐘,沖洗5次后,121℃高壓滅菌30分鐘
干燥儲存:60℃熱風干燥60分鐘,密封保存
第三法預處理
墊片滅菌:121℃±2℃高壓滅菌30分鐘(特殊墊片按實際工藝處理)
測定步驟
第一法(金屬穿刺器)
穿刺操作:以200mm/min速度垂直穿刺膠塞標記位,記錄最大力值
重復測試:每5個瓶更換穿刺器,共測試10個瓶
第二法(注射針)
穿刺操作:固定注射針,以200mm/min速度穿刺預處理膠塞
逐針測試:每針測試1個瓶,共使用10支注射針
第三法(墊片支撐)
裝置固定:將墊片夾持于支撐裝置頂部,確保不被刺入瓶內(nèi)
穿刺測試:垂直穿刺標記位,記錄最大力值并注明穿刺器類型
結果判定
指標 判定標準
穿刺力 最大力值≤標準值(如≤50N),符合品種規(guī)定
重復性 10個試樣中任意2個差值≤50N,否則重測
特殊情況 ≥2個膠塞被推入瓶中則判不合格;1個需復測且不得再出現(xiàn)
質(zhì)量控制
設備校準:
材料試驗機力值誤差≤標稱精度(如±2N或±0.25N)
穿刺器尺寸定期驗證(如圖1/圖2規(guī)格)
環(huán)境控制:
實驗室溫濕度23℃±2℃/50%±5%
避免穿刺器鈍化或污染
異常處理:
穿刺力異常波動需檢查穿刺器鋒利度
膠塞脫落需重新封口后重測
附注
穿刺器維護:每次測試前用丙酮擦拭,金屬穿刺器累計使用≤10次
標記定位:膠塞穿刺位需與實際注射針位置一致(如安瓿頸部)
數(shù)據(jù)修正:第一法中復測仍超差需更換穿刺器重新試驗
規(guī)范依據(jù)
YBB00322004-2015《注射劑用膠塞墊片穿刺力測定法》
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