Vein duct device capable of performing plugging

Abstract

The invention relates to a vein duct device capable of performing plugging. The vein duct device comprises a needle tube, a needle tube seat, a vein duct, a vein duct seat, a movable plugging wire, anisolation component capable of isolating a part of or all of the plugging wire from outside, a boost guide wire and a guiding passage, wherein the needle tube penetrates through a sealing body; the front end of the needle tube is exposed from an opening in the front end of the vein duct; at least the tail section of the plugging wire is hollow to form a plugging wire inner cavity; a part of or all of the boost guide wire can enter the plugging wire inner cavity; at least the front end of the guiding passage is in the shape of a straight pipe; an opening in the front end of the guiding passagecommunicates with a vein duct inner cavity directly or through a vein duct seat inner cavity; under the assistance of the boost guide wire, the plugging wire passes through the guiding passage to enter the vein duct inner cavity; at least the straight pipe shaped part of the guiding passage and the vein duct can move in an external isolated rotating manner to the position that the central axis ofthe guiding passage is coincident with that of the vein duct; and the plugging wire which can be in direct contact with the vein duct seat inner cavity and / or communicate with fluid, the boost guidewire and the guiding passage are isolated from outside.

Description

technical field [0001] The invention relates to a blockable venous catheter device, which belongs to the technical field of medical devices. Background technique [0002] Venipuncture and associated intravenous infusion are the most commonly used general techniques in various clinical departments. When the infusion time is long, flexible venous catheters are most often used to indwell in the venous lumen. During the indwelling period, the flexible venous catheter eliminates the The risk of puncturing the vein with the front end of the rigid needle tube; however, during the indwelling period without drug solution injection, the local blood flow or stagnation in the intravenous catheter and the opening can easily cause blood coagulation, even if the anticoagulant such as heparin is used to seal the tube, Measures such as flushing the catheter with normal saline still cannot prevent the formation of thrombus in the lumen of the venous catheter, and the detachment of the thrombu...

AI Technical Summary

Problems solved by technology

[0005] Patent application 201810470421.9 proposes to block the opening of the front end of the venous catheter through the external isolation of the occluding wire, and smoothly enter the lumen of the venous catheter through the guiding auxiliary occluding wire, but the occluding wire is between the opening of the guiding passage and the rear opening of the venous catheter lumen. The intervening travel is carried out in a free state and there is no coaxial guiding structure, so it is difficult for the occluding wire to enter the lumen of the venous catheter easily

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