{"id":5363,"date":"2024-11-14T14:57:10","date_gmt":"2024-11-14T06:57:10","guid":{"rendered":"https:\/\/www.qualitester.com\/?p=5363"},"modified":"2025-04-14T16:49:20","modified_gmt":"2025-04-14T08:49:20","slug":"iso-11040-4-syringe-glide-force-test","status":"publish","type":"post","link":"https:\/\/www.qualitester.com\/cs\/iso-11040-4-syringe-glide-force-test\/","title":{"rendered":"Testov\u00e1n\u00ed funk\u010dnosti st\u0159\u00edka\u010dky na s\u00edlu uvoln\u011bn\u00ed a klouzavou s\u00edlu"},"content":{"rendered":"

Testov\u00e1n\u00ed funk\u010dnosti st\u0159\u00edka\u010dky
\nS\u00edla uvoln\u011bn\u00ed a klouzav\u00e1 s\u00edla<\/small><\/h1>\n

Kluzn\u00e1 s\u00edla<\/strong> ozna\u010duje s\u00edlu pot\u0159ebnou k zatla\u010den\u00ed p\u00edstu do v\u00e1lce st\u0159\u00edka\u010dky po p\u0159ekon\u00e1n\u00ed po\u010d\u00e1te\u010dn\u00edho odporu. Tento po\u010d\u00e1te\u010dn\u00ed odpor se naz\u00fdv\u00e1 uvolnit s\u00edlu<\/strong>. Tyto parametry spole\u010dn\u011b ur\u010duj\u00ed, jak snadno a d\u016fsledn\u011b lze st\u0159\u00edka\u010dku ovl\u00e1dat. Jsou z\u00e1kladn\u00edmi sou\u010d\u00e1stmi testov\u00e1n\u00ed funk\u010dnosti st\u0159\u00edka\u010dky<\/strong> a zvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00e9 p\u0159i hodnocen\u00ed v\u00fdkonnosti p\u0159edpln\u011bn\u00e9 injek\u010dn\u00ed st\u0159\u00edka\u010dky<\/strong>.<\/p>\n

Na adrese ISO 11040-4<\/strong><\/a>, p\u0159\u00edloha E definuje zkou\u0161ka kluzn\u00e9 s\u00edly<\/strong> jako prost\u0159edek k hodnocen\u00ed kvality maz\u00e1n\u00ed (nap\u0159. silikonov\u00fdm olejem) nebo chov\u00e1n\u00ed nenamazan\u00fdch injek\u010dn\u00edch syst\u00e9m\u016f. \u0160patn\u00e9 hodnoty kluzn\u00e9 s\u00edly mohou v\u00e9st k probl\u00e9m\u016fm s pod\u00e1n\u00edm, zv\u00fd\u0161en\u00e9 bolestivosti injekce nebo selh\u00e1n\u00ed automatick\u00fdch za\u0159\u00edzen\u00ed, jako jsou autoinjektory.<\/p>\n

Testov\u00e1n\u00ed kluzn\u00e9 s\u00edly a s\u00edly p\u0159i odlomen\u00ed<\/h2>\n

Testov\u00e1n\u00ed s\u00edly p\u0159i uvoln\u011bn\u00ed st\u0159\u00edka\u010dky<\/h3>\n

Jedn\u00e1 se o po\u010d\u00e1te\u010dn\u00ed s\u00edlu pot\u0159ebnou k p\u0159ekon\u00e1n\u00ed t\u0159en\u00ed mezi z\u00e1tkou p\u00edstu a t\u011blem st\u0159\u00edka\u010dky, tedy v podstat\u011b o s\u00edlu pot\u0159ebnou k zah\u00e1jen\u00ed pohybu p\u00edstu.<\/p>\n

Testov\u00e1n\u00ed kluzn\u00e9 s\u00edly st\u0159\u00edka\u010dky<\/h3>\n

Po p\u0159ekon\u00e1n\u00ed s\u00edly uvoln\u011bn\u00ed je klouzav\u00e1 s\u00edla trvalou silou pot\u0159ebnou k udr\u017een\u00ed plynul\u00e9ho pohybu p\u00edstu v cel\u00e9m tubusu st\u0159\u00edka\u010dky. Oblast zkou\u0161ky kluzn\u00e9 s\u00edly je \u00fasek mezi oblast\u00ed uvoln\u011bn\u00ed a prudk\u00fdm n\u00e1r\u016fstem s\u00edly na konci zdvihu.<\/p>\n

\"zkou\u0161ka<\/a><\/p>\n

ISO 11040-4: Norma pro zkou\u0161en\u00ed kluzn\u00e9 s\u00edly p\u0159edpln\u011bn\u00e9 injek\u010dn\u00ed st\u0159\u00edka\u010dky<\/h2>\n

Na str\u00e1nk\u00e1ch ISO 11040-4<\/strong> standardn\u00ed, P\u0159edpln\u011bn\u00e9 injek\u010dn\u00ed st\u0159\u00edka\u010dky - \u010c\u00e1st 4: Sklen\u011bn\u00e9 barely pro injek\u010dn\u00ed p\u0159\u00edpravky a sterilizovan\u00e9 smontovan\u00e9 injek\u010dn\u00ed st\u0159\u00edka\u010dky p\u0159ipraven\u00e9 k pln\u011bn\u00ed<\/em>, nab\u00edz\u00ed podrobn\u00fd r\u00e1mec pro testov\u00e1n\u00ed kluzn\u00e1 s\u00edla v p\u0159edpln\u011bn\u00fdch injek\u010dn\u00edch st\u0159\u00edka\u010dk\u00e1ch<\/strong>. Podle p\u0159\u00edlohy E:<\/p>\n

    \n
  • Rychlost testu je obvykle 100 mm\/min<\/strong>, ale lze je upravit dohodou.<\/li>\n
  • A vysok\u00e1 vzorkovac\u00ed frekvence<\/strong> (\u2265500 Hz) se doporu\u010duje pro p\u0159esn\u00e9 zachycen\u00ed \u0161pi\u010dkov\u00fdch sil.<\/li>\n
  • Klouzav\u00e1 s\u00edla se vyhodnocuje v oblasti, kter\u00e1 za\u010d\u00edn\u00e1 po uvoln\u011bn\u00ed<\/strong> a kon\u010d\u00ed p\u0159ed <\/span>prudk\u00fd n\u00e1r\u016fst odporu na konci hlavn\u011b.<\/strong>.<\/span><\/li>\n
  • Na str\u00e1nk\u00e1ch testov\u00e1n\u00ed uvoln\u011bn\u00ed a kluzn\u00e9 s\u00edly<\/strong> v\u00fdsledky pom\u00e1haj\u00ed identifikovat nesrovnalosti v maz\u00e1n\u00ed nebo konstrukci, kter\u00e9 mohou ohrozit v\u00fdkon st\u0159\u00edka\u010dky.<\/span><\/li>\n<\/ul>\n

    Testovac\u00ed materi\u00e1ly zahrnuj\u00ed:<\/p>\n

      \n
    • Pr\u00e1zdn\u00e9 sterilizovan\u00e9 injek\u010dn\u00ed st\u0159\u00edka\u010dky<\/strong>, s maz\u00e1n\u00edm nebo bez maz\u00e1n\u00ed.<\/li>\n
    • P\u00edstov\u00e9 z\u00e1tky<\/strong> a ty\u010de<\/strong>, vybran\u00e9 na z\u00e1klad\u011b dohodnut\u00fdch specifikac\u00ed.<\/li>\n<\/ul>\n

      Postup p\u0159i zkou\u0161ce uvoln\u011bn\u00ed a kluzn\u00e9 s\u00edly<\/h2>\n

      Zkou\u0161ka kluzn\u00e9 s\u00edly prob\u00edh\u00e1 podle definovan\u00e9ho postupu, kter\u00fd zaji\u0161\u0165uje p\u0159esn\u00e9 a spolehliv\u00e9 v\u00fdsledky. N\u00ed\u017ee je uvedena zjednodu\u0161en\u00e1 verze zku\u0161ebn\u00edho postupu:<\/p>\n

        \n
      • Krok 1<\/strong>: Vlo\u017ete p\u00edstovou z\u00e1tku do pr\u00e1zdn\u00e9ho v\u00e1lce injek\u010dn\u00ed st\u0159\u00edka\u010dky pomoc\u00ed odvzdu\u0161\u0148ovac\u00ed trubi\u010dky nebo vakuov\u00e9 z\u00e1tky.<\/li>\n
      • Krok 2<\/strong>: P\u00edstn\u00ed ty\u010d je pot\u00e9 p\u0159ipevn\u011bna k z\u00e1tce p\u00edstu.<\/li>\n
      • Krok 3<\/strong>: Injek\u010dn\u00ed st\u0159\u00edka\u010dka se um\u00edst\u00ed do p\u0159\u00edslu\u0161n\u00e9 adapt\u00e9rov\u00e9 desky na za\u0159\u00edzen\u00ed pro m\u011b\u0159en\u00ed s\u00edly (tahov\u00fd a tlakov\u00fd zku\u0161ebn\u00ed stroj).<\/li>\n
      • Krok 4<\/strong>: Pro zkou\u0161ku se nastav\u00ed ur\u010den\u00e1 rychlost, obvykle kolem 100 mm\/min.<\/li>\n
      • Krok 5<\/strong>: Provede se zkou\u0161ka a zm\u011b\u0159\u00ed se s\u00edla pot\u0159ebn\u00e1 k pohybu p\u00edstu. Kluzn\u00e1 s\u00edla je oblast mezi silou p\u0159i uvoln\u011bn\u00ed a bodem, kde se s\u00edla na konci zdvihu prudce zvy\u0161uje.<\/li>\n
      • Krok 6<\/strong>: Pro zaji\u0161t\u011bn\u00ed konzistence se testuje v\u00edce vzork\u016f.<\/li>\n<\/ul>\n