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Cavity self-adaption device

An adaptive and cavity technology, applied in the field of medical devices, can solve the problem that the anchoring device of the occluder cannot adapt to the anatomical shape of the left atrial appendage, etc.

Pending Publication Date: 2020-10-30
NINGBO DIOCHANGE MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] The purpose of the present invention is to provide an adaptive cavity device to solve the problem that the anchoring device of the occluder in the prior art cannot adapt to various anatomical forms of the left atrial appendage

Method used

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  • Cavity self-adaption device
  • Cavity self-adaption device
  • Cavity self-adaption device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] Such as Figure 1a-Figure 1f Among them, this embodiment provides an adaptive cavity device, which includes a central end portion 20 and an anchoring bracket 10 , and the anchoring bracket 10 is surrounded by a plurality of elastic support rods emanating from the central end portion 20 . Such as Figure 1a and 1c Among them, the support rod extends concavely from the central end 20 toward the distal end to form a first curved portion 11, and extends outwardly from the end of the first curved portion 11 away from the central end 20 toward the proximal end to form a second curved portion 12. One end of the second curved portion 12 away from the first curved portion 11 extends in the distal direction to form a transition portion 13; a plurality of support rods are circumferentially rotationally symmetrical along the central axis of the central end portion 20 to form a bowl-shaped anchoring bracket 10; In the transition portion 13, a plurality of support rods are connecte...

Embodiment 2

[0099] Such as Figure 4a-4b Among them, the self-adaptive cavity device provided in this embodiment is based on the device provided in Embodiment 1, and further includes a first flow blocking film 40, the first flow blocking film 40 is composed of a multi-layer coating film, and the multi-layer The coating film covers the support rods of the anchoring bracket 10, such as Figure 4a shown. The anchoring stent 10 is provided with a membrane connecting structure, which is one or more coils 15 and a limiting structure 16, such as Figure 4b In the process, the coil 15 cooperates with the limiting structure 16 to connect the covering film to the anchoring stent 10, so that the first blocking membrane 40 will not fall off or be damaged when the device is put in and out of the sheath.

[0100] In this embodiment, the central end 20 is provided with a detachable connection structure, which is convenient for connection with the transmission cable.

[0101] In this embodiment, the c...

Embodiment 3

[0103] Such as Figures 5a-5d Among them, the adaptive cavity device provided in this embodiment is based on the device provided in Embodiment 1. The first difference between Embodiment 3 and Embodiment 1 is that each three-dimensional spiral structure of the converging part 30 , that is, the spring emanates from its central point and is spirally divergent relative to the central axis of the central end 20, rather than radially divergent, such as Figure 5c, and the number and position of the support rods correspond to the springs one-to-one, the 6 support rods are connected to one end of the 6 springs, and the other ends of the 6 springs converge to form a collection point.

[0104] The second difference is that: the first bending portion 11, the second bending portion 12 and the transition section 13 of the anchoring bracket 10 are provided with adaptive structures, such as Figure 5b Among them, it is a two-dimensional S-shaped structure, and the solid rod width of the two...

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Abstract

The invention provides a cavity self-adaption device. The device comprises a central end part and an anchoring support, the anchoring support is defined by a plurality of elastic supporting rods diverged from the central end part, self-adaptive structures are arranged on part or all of the supporting rods of the anchoring support, and when the anchoring support is extruded by the inner wall of thecavity, the self-adaptive structures immediately make bending deformation reaction so that the anchoring support is adaptively attached to the inner wall of the cavity. The device can adapt to various left auricles in different forms and is wider in adaptability, and greatly reduces the occurrence rate of intraoperative and postoperative complications.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an adaptive cavity device. Background technique [0002] Atrial fibrillation (hereinafter referred to as "AF") is the most common tachyarrhythmia. Atrial fibrillation loses the effective contraction of the atrium, causing blood to stay in the left atrial appendage. In addition, the unique anatomical structure of the left atrial appendage and the unevenness of the internal muscle trabecula cause the retained blood to generate eddy currents and promote the formation of thrombus. The thrombus falls off from the left atrial appendage and enters the The arterial system may cause pulmonary embolism, cerebral infarction, myocardial infarction, etc. Among them, the most serious outcome of thrombus shedding is cerebral infarction, because thrombus stays in the blood vessels of the brain, restricting blood flow and causing stroke. Once a stroke occurs, it can range from disability to se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12
CPCA61B17/12031A61B17/12122A61B17/12131A61B17/1214A61B17/12172
Inventor 李彪张丽红邵烨李刚
Owner NINGBO DIOCHANGE MEDICAL TECH CO LTD
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