Tsarin shigarwa shine kayan haɗin da ake amfani dashi don ɗaure layin jigilar kaya yayin shigar da layin jigilar kaya.

Lokacin da hanyar aiki ta wuce ta yankunan zafin jiki mai zafi kamar yin burodi, ya kamata a shigar da haɗin haɗin zafin jiki a ƙarshen ƙarshen ɓangaren zafin jiki. Ya kamata a haɗa ƙarshen haɗin haɗin zafin jiki zuwa layin, kuma ƙarshen ya kamata ya sami madaidaiciyar madaidaiciya wanda ke haɗuwa da wani layin. Ya kamata a kiyaye wani wuri mai kyau tsakanin hanyoyi biyu don ba da damar fadadawar zafi da kuma lalacewa.
