Oval foramen closing clamp

Abstract

The invention discloses an oval foramen closing clamp, and relates to the field of medical instruments. The left clamping arm is connected to the left side of the connecting plate; the right clamping arm is connected to the right side of the connecting plate; the connecting piece is connected to the tail end of the right clamping arm; wherein the main body structure of the oval foramen closing clip is formed by integrally cutting memory metal plates or respectively cutting the memory metal plates, connecting the memory metal plates and then performing heat setting; barb structures are formed on the left clamping arm and the right clamping arm; the connecting plate, the left clamping arm and the right clamping arm are of a Z-shaped structure which is folded mutually in the natural state and can be straightened in the conveying state so that conveying can be achieved in the catheter. Compared with the prior art, while PFO is effectively closed, implants are greatly reduced, the thrombus risk is lower, subsequent atrial septum puncture is not affected, and a channel is reserved for subsequent implementation of atrial septum puncture interventional operation.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a foramen ovale closing clip. Background technique [0002] A patent foramen ovale (PFO) is a common congenital heart disease that is an abnormal passage of the atrial septum between the left atrium and the right atrium. It is caused by the failure of the first and second atrial septum to fit together. resulting in a diagonal passage between the two. This channel can allow the thrombus in the venous system to flow to the left heart with the blood, which can then cause cerebral infarction and migraine. In recent years, more and more attention has been paid to it, and the treatment has become more and more active. The current mainstream treatment method is percutaneous (femoral vein) occlusion using an occluder. [0003] As shown in the occluders currently used, they are all nickel-titanium alloy braided double-disc thin-waisted "I"-shaped structures (such as figure 1 shown), it...

AI Technical Summary

Problems solved by technology

[0004] However, due to the large volume and dense mesh of the existing occluder, it almost occupies the entire interatrial septum after being implanted in the human body. It becomes impossible to puncture the atrial septum to send the sheath (φ3-9mm) into the left atrium, which makes the patient lose the intervening channel of the atrial septum, and also loses the minimally invasive interventional treatment of atrial fibrillation, mitral valve regurgitation and other diseases Opportunity

Secondly, the current occluder is large in size, and exposure in the heart cavity can easily lead to thrombus formation, which itself can cause embolism complications, so it affects the effect of treatment

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