| 摘要 |
FIELD: medicine. SUBSTANCE: cannula has catheter unit and unit of needle to be introduced. Catheter unit is provided with chamber for preparation, fastening flaps, needle attachment facility and flexible tube. Unit of needle to be introduced includes needle with tapered end. This end protrudes from vacant end of catheter tube and faces needle flaps with its shear so that it is directed with its shear towards patient's tissues during injection. EFFECT: higher accuracy of intravenous introduction of medicinal preparations. 13 dwgn
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