Puncture needle component

Abstract

The invention relates to a puncture needle component which comprises a puncture needle, a navigation guide wire, a sheathing tube with a dilator and a three-dimensional positioning and orienting device. The navigation guide wire is arranged inside the puncture needle to form an integrated guide-wire-shaped solid core puncture needle which is connected with the sheathing tube and the three-dimensional positioning and orienting device. The puncture needle component can be used for completing interventricular septum puncture and interatrial septum puncture through a venipuncture approach, the problems of the prior art can be solved effectively, unlimited selecting of surrounding blood vessel approaches of a pre-operation position can be realized, spatial position selecting of a puncture target can be limited effectively while moving direction of a needle tip of the puncture needle can be positioned accurately and objectively, and two steps of puncture spacing of the puncture needle and building of a guide wire rail can be completed in one step; the puncture needle component is safe, simple and convenient to operate, operating technical difficulty is lowered substantially, operating technical error risk is avoided completely, and risks such as perforation of free ventricular wall and cardiac tamponade are avoided fully.

Description

technical field [0001] The invention relates to the technical field of devices used for clinical interventional diagnosis and treatment of cardiovascular medicine, in particular to a puncture needle assembly used to complete interventricular septal puncture and atrial septal puncture through venous puncture. Background technique [0002] There are two main types of puncture needle assemblies commonly used in clinical practice of modern interventional cardiology: short puncture needle assemblies and long puncture needle assemblies. puncture. [0003] A short puncture needle assembly for peripheral vascular catheterization, including a short puncture needle, a short guide wire, and a vascular sheath with a dilator. When performing percutaneous peripheral vascular puncture catheterization (Seldinger technique), a short puncture needle is used to percutaneously puncture into the vascular lumen first, and after the blood is withdrawn smoothly to confirm that the needle tip is in...

AI Technical Summary

Problems solved by technology

[0005] The main disadvantage of using the existing long puncture needle assembly in atrial septal puncture is that the selection and positioning of the puncture point are completely dependent on the operator's subjective consciousness and manual operation, and objective and accurate positioning cannot be performed. Atrial septal puncture The randomness of point selection is large, and there is a possibility of bias or even error, which can easily cause many problems of mispuncture, such as: (1) The location of the atrial septal puncture point is not ideal, although the atrial septal puncture has been successful, the puncture target is indeed located in the atrial septum Above, the long guide wire track has been established, and the atrial septum puncture sheath can smoothly cross the atrial septum from the right atrium side to the left atrium side, and the sheath track can be established, but if the puncture point is in the space The location is not close to the center of the atrial septum, but too close to the junction of the atrial septum and the free wall of the left atrium. Because the sheath tube itself is relatively straight and hard, and due to the limitation of the angle, the atrial septal puncture hole as a passageway has little effect on the access of instruments. The operation is affected, and sometimes it can lead to the inability to complete the next step of interventional surgery. It is often necessary to re-puncture the atrial septum to make the puncture point closer to the central area of ​​the atrial septum to complete the next step of interventional surgery

(2) The direction of the puncture needle is not correct, which will not only result in unsuccessful puncture, but also may cause serious complications and even death

If the free wall of the atrium is pierced by mistake, on the one hand, the puncture is unsuccessful, and the guide wire track and the sheath track from the right atrium side across the atrial septum to the left atrium side cannot be established, and at the same time, it will cause traumatic puncture complications, which can cause atrial dissociation Serious consequences such as wall perforation and cardiac tamponade sometimes threaten the life of the patient because of untimely discovery or improper treatment; such as aortic puncture by mistake, on the one hand, the puncture is unsuccessful, and it is impossible to establish a bridge from the right atrium across the interatrial septum The guide wire track and the sheath track on the left atrium side cause traumatic puncture complications at the same time, which can cause aorto-right atrium fistula and ...

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