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Prolen

Prolen je sintetski, monofilamentni, neresorptivni polipropilenski kirurški konac. Obično se koristi za zatvaranje kože i mekih tkiva. Koristan je zbog visoke otpornosti na tenziju, minimalne reakcije tkiva na nj i lako vađenje konaca iz tijela, a mane su mu rigidnost, cijena i nešto teže rukovanje njime u odnosu na najlon.

Model polipropilenske molekule

Konci se boje u plavo kako bi bili vidljiviji u tkivu. Sastoje se od izotaktičnog kristalnog stereoizomera polipropilena, a sastoje se od samo jedne niti. Izrađuju se kako bi trajali dugo. Koriste se za plastiku kila i drugih oštećenja fascija te za suture kože, kardiovaskularne, oftalmološke i neurokirurške procedure. Polipropilenska mrežica proizvod je tvrtke Ethicon Inc. ogranka Johnson and Johnsona. 

  CH3     H             CH3   H   CH3   H
    \    /               |    |    |    |
     C==C       ->    -- C -- C -- C -- C --
    /    \               |    |    |    | 
   H      H              H    H    H    H
                        
 propilenov monomer      polipropilenov polimer

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