Indwelling needle

Abstract

The invention provides an indwelling needle. The indwelling needle comprises a catheter base, a catheter, an insulated plug and a diversion structure, wherein the catheter base consists of a main body with an inner cavity and a side connecting pipe which is connected onto the side wall of the main body and is provided with a pipe cavity; the pipe cavity is communicated with the inner cavity at a liquid inlet; the catheter is arranged at one end of the main body; an infusion pipe core of the catheter is communicated with the inner cavity; the isolated plug is accommodated in the inner cavity; the isolated plug and the catheter are separately arranged at two sides of a communicated part between the pipe cavity and the inner cavity in the inner cavity; the diversion structure is arranged at the liquid inlet, and enables liquid flow facing the isolated plug to be formed at the liquid inlet. By arrangement of the diversion structure, a dead cavity formed between the isolated plug and the inner wall of the inner cavity away from one side of the liquid inlet can be flushed in real time, thereby quickly exhausting air, blood, residual liquid medicine and the like in the dead cavity, preventing embolism due to the fact that air enters a human body, preventing the condition that blood vessels are blocked by thrombus due to the fact that coagulated blood at the dead cavity is flushed into the blood vessels, avoiding the phenomenon that the medicinal effect is reduced because of a chemical reaction between residual liquid medicine at the dead cavity and newly-inputted liquid medicine, and improving the guarantee of life safety of a patient.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an indwelling needle. Background technique [0002] In the medical field, such as figure 1 As shown, the indwelling needle used for clinical patients usually includes a catheter 2, a catheter adapter 1, an extension tube 7, and an isolation plug 3, etc., wherein the catheter adapter 1 includes a main body 11 and a side connecting pipe 12, and the main body 11 is formed with a Inner cavity 111, the catheter 2 is installed at one end of the main body 11 and communicated with the inner cavity 111, the isolation plug 3 is accommodated in the inner cavity 111, and the cavity wall of the inner cavity 111 is between the isolation plug 3 and the catheter 2 There is a liquid inlet 5 connected to the side connection pipe 12 at the position, and the extension pipe 7 is connected to the side connection pipe 12 and communicated with the inner cavity 111. The liquid medicine in the ...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the indwelling needle in the prior art cannot be washed in real time by the liquid medicine at the dead space formed between the isolation plug and the inner wall of the inner cavity on the side away from the liquid inlet, thereby providing An indwelling needle that can be flushed by liquid medicine in real time at the dead space formed between the isolation plug and the inner wall of the inner cavity on the side away from the liquid inlet, reducing the harm to the patient

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