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Intracranial Thrombectomy Device

A technique for intracranial blood vessels and blood vessels, which is applied in the field of intracranial blood vessel thrombectomy devices, can solve the problems of unstable thrombus fixation, easy falling off, complex structure, etc., and achieves good shape memory effect, good blood vessel adherence, and reduces pressure. Grip Volume Effect

Active Publication Date: 2016-03-30
MICROPORT NEUROTECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When these thrombus retrieval devices are retrieved after capturing the thrombus, the thrombus is not firmly fixed, easy to fall off, and has a complicated structure

Method used

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  • Intracranial Thrombectomy Device

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Embodiment Construction

[0021] Refer below Figure 1-3 Embodiments of the present invention are described in detail.

[0022] For the convenience of description, the following description uses the terms "proximal end" and "distal end", wherein "proximal end" refers to the end near the operating end, and the distal end refers to the end far from the operating end.

[0023] figure 1 A general schematic view of the thrombectomy device 1 is shown, which includes a guide wire 2 , a push-pull guide wire 3 , an outer sheath 4 and a thrombus retriever 5 . The thrombus remover 5 is connected to the push-pull guide wire 3 , and the installed push-pull guide wire 3 and the thrombus remover 5 are pressed into the outer sheath tube 4 . The thrombus retriever 5 also forms a lumen 6 and can be switched between the retracted position and the deployed position by pushing and pulling the guide wire 3. In the retracted position, the thrombus retriever 5 is retracted into the outer sheath tube 4. In the deployed posit...

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Abstract

The invention provides intracranial vascular thrombus removal equipment comprising a thrombus remover, a guiding guide wire, a push-pull guide wire and an outer sheath pipe. The thrombus remover is connected with the push-pull guide wire, the mounted push-pull guide wire and the thrombus remover are pressed and held into the outer sheath pipe, the thrombus remover forms a pipe cavity and can be converted between a retrieving position and an unfolding position by the aid of pushing and pulling of the push-pull guide wire, the thrombus remover is retrieved into the outer sheath pipe at the retrieving position and pushed out of the outer sheath pipe at the unfolding position. The intracranial vascular thrombus removal equipment is characterized in that distribution density of spiral net ring units of the thrombus remover is different axially, the distribution is denser at the far end and relatively sparser at the near end; and / or the axially neighboring net ring units are connected through S-shaped or Z-shaped connecting ribs. According to the arrangement, the thrombus removal equipment can not only firmly fix the thrombus, but also effectively prevent microthrombus from falling off.

Description

technical field [0001] The invention relates to a medical device, in particular to a medical device for intervening blood vessels, in particular to an intracranial blood vessel thrombectomy device. Background technique [0002] Acute ischemic stroke is the damage of nerve tissue caused by ischemic necrosis of local brain tissue due to sudden blockage of blood flow in the brain. 70% to 80% of patients with severe symptoms requiring arteriography can see emboli or thrombus obstruction. The fatality rate of embolism in larger vessels ranges from 53% to 92%. [0003] Vascular recanalization is the key to the treatment of acute ischemic stroke. Currently, conventional methods for the treatment of acute ischemic stroke include two categories: interventional thrombolysis and mechanical thrombectomy. [0004] Interventional thrombolysis means that the catheter injects a thrombolytic agent into the vicinity of the lesion in the blood vessel where the lesion is located, and instant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/22
Inventor 徐庆顺谢志永季杰金巧蓉王森康亚红张晓明倪尊张
Owner MICROPORT NEUROTECH SHANGHAI
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