A puncture device for cardiology

Abstract

The invention discloses a puncture device for cardiology, which belongs to the field of medical devices, and comprises an outer cylinder, an inner cylinder and a core cylinder which are sequentially set from outside to inside, and the corresponding positions of the inner cylinder and the core cylinder are respectively provided with matching extraction holes. One and the extraction hole two, the core cylinder is provided with an extraction cavity located on the side of the rotating rod and connected to the extraction hole two; the front end of the inner cylinder is snap-connected with a cushioning airbag, and the cushioning airbag includes a fixed capsule located directly in front of the inner cylinder and a An annular capsule connected to the periphery of the fixed capsule, the center of the rear side of the fixed capsule is rotatably connected to a rotating rod through a connecting block, and the annular capsule is provided with pulling ropes connected to the rotating rod at equal intervals along its circumference; The outer cylinder includes a main cylinder and an auxiliary cylinder that are slidably connected. The main cylinder is provided with a reversing wheel, and a linkage rope that bypasses the reversing wheel is connected between the auxiliary cylinder and the inner cylinder. The invention has a stronger protective effect on the myocardium and corresponding blood vessels, can buffer the vibration caused by the beating of the heart, and avoids affecting the extraction of effusion.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a puncture device for cardiology. Background technique [0002] Clinically, puncture is often used in the treatment of patients with pericardial fluid. At present, traditional needles are generally used for puncture. Because the front end of the needle is relatively sharp, after the needle penetrates into the pericardium, the heart is beating all the time, and the needle tip can easily stab the myocardium and even cause cardiac arrest, which poses a great safety hazard. After the needle position is determined, the position and speed of extracting the effusion cannot be adjusted, which affects its practical application. [0003] In the patent with authorized notification number CN 206333950 U, a puncture device for cardiology is disclosed, which includes an outer cylinder, an inner cylinder, and a core cylinder; an annular friction belt is formed on the inner wall of the outer cyli...

AI Technical Summary

Problems solved by technology

But it has the following disadvantages: one, the cross-sectional area of ​​the cover is always smaller than the cross-sectional area of ​​the outer cylinder, and there is still the possibility of stabbing the myocardium and corresponding blood vessels; two, the cover does not have elasticity, and when it contacts the pericardium, it will follow the movement of the heart Bounces, vibrates, may interfere with extraction of effusion

Images