The original Rotex-Nordenström instrument for sampling of cellular material was first introduced on the market by URSUS in 1975. It consists of a thin screw needle housed in a cannula with an outer diameter of 0.8 and a special instrument holder.
The advantages of the screw needle technique were soon recognized and were pointed out in comparative studies by House & Thomson(2), Sinner(7) and others. The rapid acceptance of the new technique in leading radiological and cytological quarters has thereafter led to further refinement of the instrument.
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REF 172-08
0.55 mm/205 mm stainless steel screw needle inserted into 0.8 mm/172 mm stainless steel cannula. The cannula with indwelling screw needle is delivered in standard packs of 20 instruments, each in individual covers, sterilized by beta radiation and ready for use. They are disposable and intended for one time use to ensure efficient sampling, sterility and indisputable security against any kind of accidental inoculations. The instrument holder is made of polycarbonate and is intended for repeated use. Minimum delivery is one standard pack (20 instruments) including two instrument holders.
REF 112-08
0.55 mm/145 mm stainless steel screw needle inserted into 0.8 mm/112 mm stainless steel cannula. The cannula with indwelling screw needle is delivered in standard packs of 20 instruments, each in individual covers, sterilized by beta radiation and ready for use. They are disposable and intended for one time use to ensure efficient sampling, sterility and indisputable security against any kind of accidental inoculations. The instrument holder is made of polycarbonate and is intended for repeated use. Minimum delivery is one standard pack (20 instruments) including two instrument holders.
