Cardiac apex mediated heart volume reduction implant

Abstract

The invention discloses a cardiac apex mediated heart volume reduction implant which comprises a braid base, an umbrella-shaped frame on the braid base, and an isolating membrane on the umbrella-shaped frame, wherein the umbrella-shaped frame comprises supporting bars towards the upper part of the outer side; and the upper ends of the supporting bars are bent to form horizontal folds. The heart volume reduction implant aims at characteristics and needs of minimally invasive intervention treatment, particularly the contractility of the braid base is improved by optimizing the structure of the braid base and the structure of the umbrella-shaped frame, and the heart volume reduction implant is facilitated to be loaded into a delivery system, so that the diameter of delivery catheter can be reduced, and damage of endovascular tissues in the implantation process is reduced. Moreover, enough thickness of the braid base is ensured, the effect of automatically adjusting the height of the heart volume reduction implant can be achieved, and the supporting bars with horizontal folds are adopted in the implant, so that the implant is facilitated to be fully unfolded without being influenced by a ventricular space in the release process, and the implant can be firmly fixed on the premise of not damaging ventricular walls.

Description

technical field [0001] The invention relates to the technical field of heart surgery instruments, in particular to a cardiac volume reduction implant that can be intervened through the apex of the heart. Background technique [0002] Congestive Heart Failure (CHF), characterized by hypertrophy or dilation of the heart, especially the left ventricle, is the leading cause of death and disability in today's clinical practice. As the patient's ventricles enlarge, the heart becomes less and less efficient at pumping blood. Gradually, the heart becomes more enlarged so that it cannot supply enough blood to the body. Medicine uses ejection fraction to judge whether a patient's heart is healthy. Ejection fraction refers to the ability of the blood in the ventricle to pump outward every second. The snake blood fraction of a normal healthy heart is about 60%, while the ejection fraction of CHF patients is usually only 40% or even less. CHF patients experience constant fatigue, physi...

AI Technical Summary

Problems solved by technology

[0005] But the above-mentioned "parachute" and its implantation method have the following defects: 1. The supporting base of the existing "parachute" umbrella product is made of polymer material, and the diameter of the base is still large after being compressed, resulting in the required The outer diameter of the delivery catheter reaches 14Fr. Therefore, the operation of implanting the "parachute" through the delivery catheter will seriously damage the inner wall tissue of the blood vessel; 2. The base of the existing "parachute" is not elastic enough to adjust the height of the parachute product. , so during the release operation, it is necessary to ensure that the base is completely attached to the apex of the ventricle, which requires extremely high technical requirements for the operator and directly affects the promotion of technology; 3. The existing "parachute" products cannot be repeatedly positioned. The release position is improper, and the parachute cannot be retracted, that is, the repeated positioning of the product cannot be realized; 4. The existing surgical method of implanting a "parachute" needs to use a balloon to expand the insulating layer after the insulating layer is released, which will inevitably increase the cost of the operation. Operating time; 5. Existing "parachute" products often require anchor thorns for fixation, and anchor thorns will inevitably cause damage to the inner wall of the ventricle

However, in practice, it is found that the contraction effect of the base part of this structure is still not good enough, and the positioning still requires the anchor to penetrate the myocardium of the ventricular wall, causing damage to the ventricular inner wall

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