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Blood-vessel embolectomy device with semi-closed structure and thrombus treating apparatus with the same

A semi-closed and therapeutic device technology, applied in balloon-shaped catheters, medical science, surgery, etc., to achieve the effects of easy processing, good pushability, and not easy to fall off

Inactive Publication Date: 2016-06-15
ZHUHAI TON-BRIDGE MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device can also be used in other adaptive parts of human blood vessels

Method used

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  • Blood-vessel embolectomy device with semi-closed structure and thrombus treating apparatus with the same
  • Blood-vessel embolectomy device with semi-closed structure and thrombus treating apparatus with the same
  • Blood-vessel embolectomy device with semi-closed structure and thrombus treating apparatus with the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment one, such as Figure 3 to Figure 5 As shown: the conical structure 130 of the thrombus remover 100 is closed, while the rest is completely open, with the longest longitudinal gap 160 . With this structure, the closed tapered structure 130 can maintain good drag performance, so that the thrombus retriever 100 can be easily pulled into the microcatheter, and can also provide good support for the advancement of the thrombus retriever 100 in the microcatheter. The open unit grid 170 makes the thrombus retriever 100 more flexible as a whole, can pass through tortuous blood vessels more easily, and can be slightly folded at the distal end, so that the thrombus is less likely to fall off.

Embodiment 2

[0047] Embodiment two, such as Figure 6 as well as Figure 7 As shown: the unit grid 170 of the thrombus retriever 100 is half open and half closed, and the length of the longitudinal gap 160 accounts for about half of the thrombus retriever 100 . In this way, the thrombus remover 100 can have the advantages of both openness and closure. It can not only have the advantages of easy folding of the open cell grid 170, but also have the advantage of good pushability of the closed cell grid 170. Moreover, by adjusting the closed unit The number of grids 170 (equivalent to adjusting the length of the longitudinal gap 160) adjusts the overall compliance and pushability of the thrombus retriever.

[0048] The proximal end of the thrombus retriever 100 is configured as a tapered structure 130, which gradually expands from the proximal end to the distal end, and the taper is 30° to 60°. The advantage of this design is that it can greatly reduce the propulsion resistance when the retr...

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Abstract

The invention relates to a blood-vessel embolectomy device with a semi-closed structure and a thrombus treating apparatus with the same. The blood-vessel embolectomy device comprises an embolectomy device body, a developing loop located at the near end of the embolectomy device body and developing rings located at the far end of the embolectomy device body. The embolectomy device body is of a web-tubular or cage-shaped structure composed of a plurality of connected unit grids; the near end of the embolectomy device body is of the closed conical structure; a longitudinal gap is formed in the side face of the far end of the embolectomy device body. The thrombus treating apparatus comprises the blood-vessel embolectomy device with the semi-closed structure, a protecting sheath tube, a conveying wire, a micro guide tube, a guiding guide tube and a rotating bleeding stopping valve. The micro guide tube is pushed to a thrombus embolism in the guiding guide tube along the guiding guide tube, the protecting sheath tube is communicated with the micro guide tube through the rotating bleeding stopping valve, and the embolectomy device body is placed in the protecting sheath tube, pushed into the micro guide tube through the conveying wire and pushed to the thrombus embolism. According to the blood-vessel embolectomy device with the semi-closed structure and the thrombus treating apparatus, flexibility is good, the embolectomy device body can pass through the bent blood vessel or reach the blood vessel with the thin far end, and harm to the blood vessel wall is small.

Description

technical field [0001] The present invention relates to a blood vessel thrombus removal device with a semi-closed structure and a thrombus treatment instrument thereof, in particular to a medical device for intervening in blood vessels, which is used to mechanically eliminate the thrombus when acute ischemic stroke occurs. It is a treatment method for the immediate restoration of blood flow for thrombus blocked in blood vessels, which is especially suitable for thrombus removal of intracranial blood vessels. Background technique [0002] Once ischemic stroke occurs, blood vessels must be recanalized within the shortest possible time (effective time window). At present, there are two main treatment methods for intracranial thrombosis: drug thrombolysis and mechanical thrombectomy. [0003] Drug thrombolysis is through intravenous injection of rt-PA (tissue plasminogen activator) or urokinase to dissolve thrombus, and can also be treated with intra-arterial exposure to thromb...

Claims

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Application Information

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IPC IPC(8): A61B17/221A61M25/10
CPCA61B17/221A61B2017/22044A61B2017/2215A61M2025/1052
Inventor 赵中陈志刚徐兵科施磊
Owner ZHUHAI TON-BRIDGE MEDICAL TECH CO LTD
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