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Embolic protection device

A protection device and embolization technology, applied in the field of medical devices, can solve the problems of emboli escaping, failure to detect in time, etc.

Pending Publication Date: 2022-03-22
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

In addition, when the embolism packaging device is opened, it may not fit well with the vessel wall. Due to the limitation of the angiography angle, this situation may not be detected in time, which may cause the embolus to escape to the distal vessel through the gap between the filter and the vessel wall. possibility of

Method used

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Examples

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Embodiment Construction

[0029] figure 1 Shown is an embolic protection device, including a pushing guide wire 10 , a filter 20 , and a catheter 30 . Filter 20 is shown in an expanded state external to catheter 30 . The filter 20 has a screen 21 for blocking emboli. The pushing guide wire is connected with the filter, and there is a cannula at the connection, which is divided into a distal cannula 221 and a proximal cannula 222 . The cannula can be fixedly connected to the pushing guide wire 10, and the way of fixed connection can include one or a combination of welding, crimping, bonding and the like. The cannula can also be slipped over the push wire over the guide wire. One embodiment is to fix limit devices 501 and 502 on the pushing guide wire. When the filter is slidably connected to the guide wire, the limit devices are used to limit the sliding range of the filter to a certain area. The distal end of the catheter 30 has a visualized marker ring 31 for indicating the position of the cathete...

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Abstract

The invention relates to an embolism protection device which is provided with a pushing guide wire, a catheter and a filter, and a pressure sensor is installed at the far end of a filter screen of the embolism protection device. The filter comprises a filter screen, 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 can also be provided with at least two pressure sensors which are respectively arranged at the far end and the near end of the filter screen. The pressure sensors can detect the pressure on the two sides of the filter screen in real time in the operation, reference is provided for judging whether the embolism protection device is blocked or not or not or not, and the operation strategy can be adjusted in time.

Description

technical field [0001] The invention relates to a medical device, in particular to an embolism protection device. Background technique [0002] During endovascular interventional treatment, when the guide wire and catheter pass through the blood vessel, or when the blood vessel is opened by stents, balloons, and rotary atherectomy instruments, emboli or plaque may fall off. The dislodged emboli may cause occlusion of the distal blood supply vessels and may cause damage to the corresponding tissues. Especially when the blood vessel is opened to supply the brain tissue such as the carotid artery, the detachment of the embolus may cause a stroke and cause damage to the patient's neurological function. In order to prevent the dislodged emboli from embolizing to the distal blood vessel along with the blood flow, the existing technical solutions often release an embolic protection device in advance at the distal end of the target blood vessel that needs to be opened. The embolic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/09A61M25/01A61F2/01
CPCA61M25/09041A61M25/0113A61F2/01A61F2/011A61M2025/0002
Inventor 吕斌刘镕珲王君郭方方杜志华张荣举
Owner THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
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