METHOD FOR ULNAR VEIN CATHETERISATION AND MULTIPLE-DOSE INTRAVENOUS DRUG INTRODUCTION Russian patent published in 2010 - IPC A61M25/01 A61K31/7004 A61K31/727 A61K31/167 A61K33/14 A61P43/00 A61B8/00 

FIELD: medicine.

SUBSTANCE: there is specified an injection point spaced from the elbow bend line at a distance exceeding the length of a catheter with anaesthesia of the injection point. Above the specified injection point, a tourniquet is twisted tightly. Before puncturing, a forearm in said region and below is cooled to ensure stable cold hyperaemia, while the specified vein region is filled with blood by uplifting the cooled forearm and slip squeezing in this position from the hand towards the specified vein region. Before the procedure, a catheter needle, a syringe, an infusion system and drug solutions are cooled to 0°C, taken with gloves made of a heat-insulating material. With observing aseptic environment, the vein is punctured with the tightly fixed catheter to enable bleeding from a lumen of the needle to be thereafter advanced forward by 3-4 mm. Then the needle is smoothly removed, and simultaneously the catheter is introduced in the vein by 1-4 cm. And the catheter used is provided with a working part representing a free-standing fitting softened and lengthened at temperature +33°C and higher. Thereafter the limb is repositioned in relation to the patient's trunk so that an open box of the catheter is lower than the right atrium of the patient; in this position, the tourniquet is released. A cannula of the catheter is connected to the infusion system; the catheter is fixed to the skin with X-ray aided positioning thereof. Through the catheter, there are introduced the drug solutions additionally containing an anticoagulant agent, namely cold 4% sodium hydrocarbonate used to fill in the catheter needle before introduced in the vein, then the catheter is filled in once again immediately after removing the needle therefrom and after each drug introduced.

EFFECT: method allows improving efficiency and safety of intravenous drug introduction ensured by higher accuracy of specifying the puncture point, ensured local hypothermia and blood hypocoagulations that prevents physical and chemical injury of endothelium of the veins and does not impede with washing the catheter.

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