注射劑用膠塞墊片穿刺落屑測定法是依據(jù)YBB00332004-2015標(biāo)準(zhǔn)規(guī)定的技術(shù)方法,用于量化注射劑用膠塞及墊片在穿刺過程中產(chǎn)生的可見落屑數(shù)量的標(biāo)準(zhǔn)技術(shù)。該方法通過模擬注射針垂直穿刺過程,評價材料抗落屑性能,是確保藥品包裝無菌性和藥物質(zhì)量的核心指標(biāo)。
詞條概要
注射劑用膠塞墊片穿刺落屑測定法是依據(jù)YBB00332004-2015標(biāo)準(zhǔn)規(guī)定的技術(shù)方法,用于量化注射劑用膠塞及墊片在穿刺過程中產(chǎn)生的可見落屑數(shù)量的標(biāo)準(zhǔn)技術(shù)。該方法通過模擬注射針垂直穿刺過程,評價材料抗落屑性能,是確保藥品包裝無菌性和藥物質(zhì)量的核心指標(biāo)。
核心原理
穿刺落屑:在垂直穿刺試驗(yàn)中,穿刺器刺透膠塞或墊片時產(chǎn)生的可見微粒數(shù)量(≥50μm),以落屑總數(shù)計(jì)。落屑數(shù)量越少,材料抗污染能力越優(yōu)。
儀器裝置
第一法(50ml以上注射劑瓶)
注射劑瓶:與被測膠塞配套,裝量≥50ml,20個(含對照)
穿刺器:不銹鋼長針(1Cr18Ni9Ti,圖1),1個
抽濾裝置:濾紙(肉眼觀察)或顯微鏡(輔助確認(rèn))
第二法(50ml以下注射劑瓶)
注射針:外徑0.8mm,L型斜角12°±2°(符合GB15811-2001),12個
濾膜:0.5μm孔徑,12張
注射器:1ml刻度,與注射針配套
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),10個
試樣制備
第一法預(yù)處理
裝瓶封口:10個被測膠塞+10個已知落屑膠塞,裝水后封鋁蓋
高壓滅菌:121℃±2℃保持30分鐘,冷卻至室溫
第二法預(yù)處理(直接法)
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(fēng)干燥60分鐘,密封保存
第三法預(yù)處理
墊片滅菌:121℃±2℃高壓滅菌30分鐘(特殊墊片按實(shí)際工藝處理)
測定步驟
第一法(對照比較法)
交替穿刺:先被測膠塞后已知膠塞,垂直穿刺標(biāo)記位,晃動后拔針
落屑過濾:濾紙肉眼觀察(25cm距離),記錄每10針落屑總數(shù)
第二法(直接法)
多點(diǎn)穿刺:每個膠塞穿刺4次(不同位置),每針換新注射針
濾膜過濾:0.5μm濾膜收集落屑,記錄每48針(12瓶×4次)總數(shù)
第三法(墊片支撐法)
穿刺過濾:垂直穿刺后晃動,濾紙觀察落屑,記錄每10針總數(shù)
結(jié)果判定
指標(biāo) 判定標(biāo)準(zhǔn)
落屑有效性 已知膠塞結(jié)果與歷史數(shù)據(jù)一致(差值≤1粒),否則試驗(yàn)無效
膠塞合格性 被測膠塞落屑數(shù)≤標(biāo)準(zhǔn)值(如≤5粒/10針),且無≥2個膠塞被推入瓶中
重復(fù)性 同一批次試驗(yàn)落屑數(shù)差值≤2粒,否則重測
質(zhì)量控制
設(shè)備校準(zhǔn):
材料試驗(yàn)機(jī)力值誤差≤標(biāo)稱精度(如±2N)
注射針斜角定期驗(yàn)證(12°±2°)
環(huán)境控制:
實(shí)驗(yàn)室溫濕度23℃±2℃/50%±5%
避免穿刺器鈍化或污染
異常處理:
落屑計(jì)數(shù)異常需檢查濾膜完整性
膠塞脫落需重新封口后重測
附注
對照試驗(yàn)必要性:第一法/第二法(對照法)需同步測試已知膠塞以驗(yàn)證結(jié)果可靠性
穿刺器維護(hù):每次測試前用丙酮擦拭,金屬穿刺器累計(jì)使用≤10次
數(shù)據(jù)修正:顯微鏡確認(rèn)落屑尺寸時,僅統(tǒng)計(jì)≥50μm微粒
規(guī)范依據(jù)
YBB00332004-2015《注射劑用膠塞墊片穿刺落屑測定法》
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