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Embolic protector

An embolic protector and embolic technology, which is applied in the field of medical devices, can solve the problems of increased difficulty and time of operation, distal vascular occlusion, difficulty in recovery, etc., and achieve the goals of reducing emboli escape, strong support force, and convenient release and recovery Effect

Pending Publication Date: 2022-04-05
THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Emboli can easily escape to the distal vessel through the gap between the embolic protection device and the vessel wall, causing occlusion of the distal vessel
In addition, some embolic protection devices have a large recovery force and difficult recovery, which increases the difficulty and time of the operation.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0025] figure 1 Shown is an embodiment of an embolic protector comprising a filter 20 , a pusher guidewire 10 and a catheter 30 . The distal part of the pushing guide wire is 101, which is softer and avoids damage to blood vessels. The filter 20 includes a screen 21 , a support ring 22 and a recovery part 24 . The recovery part 24 has an oblique opening to facilitate recovery of the filter 20 into the conduit 30 . The recovery part 24 is close to the proximal end, and the filter screen 21 is close to the distal end. The far end of the filter screen 21 is closed, and the proximal end is open, and is connected with the support ring 22 . Pores are arranged on the filter screen 21, which can keep the liquid in the cavity passing through, but can block emboli of a certain size. The recovery part 24 is connected with the pushing guide wire 10 , and the connection point is 102 . By manipulating the advance guidewire 10 and catheter 30, the filter 20 can be retracted into the cat...

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PUM

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Abstract

The invention relates to an embolism protector which is provided with a pushing guide wire, a catheter and a filter, a filter screen is arranged in the filter, the pushing guide wire is connected with the filter, and by controlling the pushing guide wire and the catheter, the filter can be retracted into the catheter to form a compressed configuration, or the filter can be released out of the catheter to form an expanded configuration. The embolism protection device is characterized in that a supporting ring is arranged at the near end of the filter of the embolism protection device, the supporting ring is in a ring shape formed by connecting a plurality of circular cell-shaped units, and the near end of the supporting ring is connected with a recycling part which is provided with an inclined opening and connected with a pushing guide wire. A single-layer or multi-layer covering film can be fixed on the supporting ring, and an interlayer of the multi-layer covering film can be filled with a water absorption expansion material. The design of the supporting ring and the covering film can effectively enhance the wall attaching effect of the embolism protector, and embolism omission is prevented. And the inclined opening design of the recovery part is beneficial to smooth recovery of the embolism protector.

Description

technical field [0001] The invention relates to a medical device, in particular to an embolism protector. Background technique [0002] Under the guidance of imaging technology, interventional surgery can deliver instruments through the body cavity to the lesion for diagnosis and treatment. When the narrow lesion in the lumen is opened, the narrow lesion tissue may fall off and cause embolism of the distal lumen. For example, for atherosclerotic stenosis of the carotid artery, it may cause the shedding of atherosclerotic plaque during interventional opening treatment. The exfoliated plaque may cause the occlusion of the distal cerebral blood vessels, endangering the nervous tissue and function of the patient. Release the embolic protector at the distal end of the narrow position, which can intercept the dislodged emboli without affecting the normal passage of fluid in the lumen. When the lumen is opened, the embolic protector together with the intercepted emboli is retrac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/01
Inventor 吕斌刘镕珲曹向宇郭方方刘新峰于生元
Owner THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL