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Plugging instrument

A device and wire technology, applied in the field of interventional medical devices, can solve problems such as invisible or poor visibility, tissue inflammation, and bad, and achieve the effects of reducing adverse effects on tissue, reducing clamping force, and slowing wear and tear.

Active Publication Date: 2021-06-25
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for absorbable cardiac occluders made of polymer materials, the polymer materials themselves are invisible or poorly visible under medical imaging equipment such as DSA, making it difficult to ensure smooth operation
Moreover, although the absorbable cardiac occluder made of polymer materials can be absorbed by the body, the concentrated release of excessive degradation products can easily lead to tissue inflammation. Although the occluder is completed, it will produce new Bad question

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0072] A occlusion device, including a occlusion frame, the occlusion frame is a set of 18 parallel iodized polylactic acid threads with a wire diameter of 0.40mm as the longitude thread and a set of 18 parallel polylactic acid fiber threads as the latitude The silk thread is pressed one by one, interlaced up and down to form a blocking frame. In the iodized polylactic acid thread, the mass percentage of iodine is 15%. The specification of each polylactic acid fiber thread is 50D / 72F.

[0073] The occlusion device of Example 1 was implanted in the septum of the heart of the Bama pig. During the implantation process, the occlusion device could be clearly identified under the DSA device. During the two follow-up visits of 1 month and 3 months after implantation, no adverse phenomena such as conduction block were found. One year after implantation, pathological section analysis of the occlusion device and surrounding tissues showed no obvious inflammation and foreign body react...

Embodiment 2

[0075] A occlusion device, including a occlusion frame, the occlusion frame is a set of 18 parallel polylactic acid threads with a wire diameter of 0.30mm as the longitude thread and a group of 36 parallel iodized polylactic acid fiber threads as the latitude The silk thread is pressed one by one, interlaced up and down to form a blocking frame. In the iodized polylactic acid thread, the mass percentage of iodine is 11%. The specification of each polylactic acid fiber thread is 80D / 72F.

[0076] The occlusion device of Example 2 was implanted in the septum of the heart of the Bama pig. During the implantation process, the occlusion device could be clearly identified under the DSA device. During the two follow-up visits of 1 month and 3 months after implantation, no adverse phenomena such as conduction block were found. One year after implantation, pathological section analysis of the occlusion device and surrounding tissues showed no obvious inflammation and foreign body rea...

Embodiment 3

[0078] A occlusion device, comprising a occlusion frame, the occlusion frame is a group of 18 parallel-arranged polyε-caprolactone wires with a wire diameter of 0.20mm as the longitude wires and a group of parallel-arranged mixed wires as the latitude wires, The mixed wires include polyε-caprolactone filaments and iodized polyε-caprolactone fibers arranged alternately and in parallel, wherein, there are 18 polyε-caprolactone filaments and 18 iodized polyε-caprolactone fibers The thread is 18 strands, which are woven one by one and staggered up and down to form a blocking frame. In the iodized polylactic acid thread, the mass percentage of iodine is 10%. In the mixed silk thread, the specification of each iodinated polyε-caprolactone fiber thread is 30D / 72F, and the silk diameter of the polyε-caprolactone thread is 0.40mm.

[0079] Soak the polyε-caprolactone silk thread (0.20mm and 0.40mm) and the iodized polyε-caprolactone fiber thread (30D / 72F, fastened with non-degradable ...

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Abstract

The invention relates to a plugging instrument, the plugging instrument comprises a plugging frame, the plugging frame comprises a plurality of polymer weaving wires and a plurality of polymer fiber wires, the plurality of polymer weaving wires and the plurality of polymer fiber wires are mixed and woven to form the plugging frame, and each polymer fiber wire comprises a plurality of polymer fiber wires; and the polymer woven yarns and the multiple strands of polymer fiber yarns have the characteristic of peak shifting degradation. The plugging instrument can reduce adverse effects on tissues and is beneficial to avoiding tissue inflammation.

Description

technical field [0001] The invention relates to the field of interventional medical devices, in particular to a blocking device. Background technique [0002] This section provides background information related to the present disclosure only and is not necessarily prior art. [0003] Percutaneous interventional therapy is a disease treatment method that has developed very rapidly in recent years, and the field of application of this therapy is becoming more and more extensive. Among them, the use of transcatheter interventional therapy can place instruments and drugs to the heart, arteriovenous blood vessels and other parts of the human body. The device may be a heart occluder, a blood vessel plug, a blood vessel filter, and the like. [0004] Transcatheter interventional cardiac occluder is a commonly used device in transcatheter interventional therapy, which can be used for minimally invasive treatment of congenital heart diseases such as atrial septal defect, ventricul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/00
CPCA61B17/0057A61B2017/00606A61B2017/0084A61B2017/00004
Inventor 陈贤淼张翠茹
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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