Porous atrial septal defect plugging device

A technology of atrial septal defect and occluder, applied in the field of medical devices, can solve the problems of exacerbation of pulmonary hypertension and right heart failure, wear and tear of lesion area, occluder falling off, etc., so as to avoid severe right heart failure and reduce volume overload , The effect of blocking is firm and stable

Pending Publication Date: 2018-12-25
YANAN HOSPITAL OF KUNMING CITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the interventional therapy method of occluding heart defects with an occluder is the first choice for patients with heart defect indications due to its mild trauma, safe operation, and definite short-to-medium-term curative effect; thin waist-shaped atrial septal defects are usually used on the market The occluder is mushroom-shaped, and the upper and lower disks are symmetrically circular. Although the self-centering function can be realized, the occluder can be placed in the most stable position of the heart to achieve the purpose of treatment; however, the existing atrial septal defect closure The occluder has the following defects: 1) the left and right atria are completely blocked after the current occluder is installed, and for patients with severe pulmonary hypertension, it will aggravate its pulmonary hypertension and right heart failure, and even endanger life; 2) some occlusion The occluder has reserved holes (CN 104224246), but the single reserved hole cannot be adjusted in diameter and has a single function. Once it is blocked, it will not be able to achieve the purpose; 3) after the existing occluder is placed, it is difficult to be stably stuck in the interatrial septum The "soft edge" of the defect will cause the occluder to fall off during and after the operation, resulting in the failure of atrial septal defect closure; 4) The support part of the occluder is made of metal wire, and as the heart beats, it will The lesion area produces a certain degree of wear and tear

Method used

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  • Porous atrial septal defect plugging device
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  • Porous atrial septal defect plugging device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as Figure 1-5 as shown,

[0034] A porous atrial septal defect occluder, comprising a support part 1 and a bluff body 2, the bluff body 2 is embedded in the center of the support part 1, the periphery of the support part 1 is coated with an absorbable polymer elastic film 104, and the bluff body 2 is Open the reserved holes 202 with different apertures and reserve the blocking umbrella 3;

[0035] The support part 1 includes a first blocking disk 101, a columnar blocking part 102 and a second blocking disk 103, and the columnar blocking part 102 is located between the first blocking disk 101 and the second blocking disk 103, with two ends The central positions of the first blocking disk 101 and the second blocking disk 103 are respectively connected, and the central ends of the first blocking disk 101 and the second blocking disk 103 are recessed inwardly, and the edge position is a circular arc transition, and the columnar blocking part 102 The outer periphery ...

Embodiment 2

[0044] A manufacturing method of the porous atrial septal defect occluder as described in embodiment 1, comprising:

[0045] Prefabricate the mold of the supporting part, weave a single nickel-titanium wire independently on the mold to form the first plugging disc 101, the columnar barrier part 102 and the second plugging disc 103 that are initially shaped, and then the first plugging disc 101, the columnar barrier part 103 The blocking part 102 and the second blocking disk 103 are shaped into the required shape, and the bluff body 2 cavity is reserved in the center, and the first blocking disk 101, the columnar blocking part 102 and the second blocking disk 103 are filled with thin films to form a supporting part 1;

[0046] Prefabricated bluff body 2, the center of one end of the bluff body 2 is installed with a conveying structure connected to the installation transmission tool, and a reserved hole 202 is opened through the bluff body 2 according to specific specifications;...

Embodiment 3

[0051] An application of the porous atrial septal defect occluder as described in Example 1 in the treatment of atrial septal defect combined with severe pulmonary hypertension, including: (1) adjustable systemo-pulmonary artery shunt, making large defects into smaller defects, The system-to-pulmonary shunt is reduced, and the volume overload of the pulmonary vessels is reduced. At the same time, when the pulmonary artery pressure rises, the blood flow will be shunted and decompressed through the reserved hole, so that the high pressure of the right heart system can be released, and the occurrence of severe right heart failure can be avoided. (2) Multiple reserved holes can prevent the occurrence of clogging and avoid the failure of diversion purpose. (3) In combination with targeted drug therapy for pulmonary hypertension, when the pulmonary artery pressure and pulmonary vascular resistance drop to the standard for closing the defect, interventional closure can be performed th...

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PUM

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Abstract

The invention discloses a porous atrial septal defect plugging device and a production method, and relates to the technical field of medical instruments. The porous atrial septal defect plugging device comprises a supporting part and a bluff body, wherein the bluff body is embedded in the center of the supporting part, a layer of absorbable polymer elastic film is plated on the periphery of the supporting part, and the bluff body is provided with preformed holes with different bore diameters and provided with a plugging umbrella; the porous atrial septal defect plugging device can be stably placed at a position with atrial septal defect, the absorbable polymer elastic film is plated on the periphery of the device, and the bluff body is provided with the preformed holes with different borediameters and a conveying structure; the structure is reasonable in design, plugging is firm and stable, systemic-pulmonary arterial shunt can be adjusted, postoperative complications are reduced, andthe porous atrial septal defect plugging device is suitable for being generalized and used in medical mechanisms.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an atrial septal defect occluder. Background technique [0002] Atrial septal defect (ASD) is a common congenital heart malformation in clinical practice. It is an abnormality of the original atrial septum during embryonic development, resulting in a gap between the left and right atrium. ASD can occur alone or coexist with other types of cardiovascular malformations. It is more common in women, with a male to female ratio of about 1:3. Due to the presence of shunt at the atrial level, it can cause corresponding hemodynamic abnormalities. For patients with atrial septal defect, because the pressure of the left atrium is higher than that of the right atrium, part of the blood in the left atrium flows to the right atrium through the atrial septal defect, which increases the burden on the right heart system, causes right ventricular hypertrophy, and reduces the blood volume...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00
CPCA61B17/0057A61B2017/00601A61B2017/00606A61B2017/00654
Inventor 戴海龙荆志成姜睿光雪峰刘倩倩韩志岩
Owner YANAN HOSPITAL OF KUNMING CITY
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