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Thrombectomy

A thrombectomy and access technology, applied in the field of thrombectomy, can solve problems such as inability to remove hard thrombus well, and achieve the effects of reducing blind spots for thrombectomy, improving thrombectomy efficiency, and increasing coverage.

Active Publication Date: 2022-06-21
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Based on this, it is necessary to provide a new thrombus retriever for the technical problem that the existing thrombus retriever cannot remove the hard thrombus well

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 proposes a thrombus retriever for removing thrombus from a blood vessel of a human or animal body, which can not only effectively remove hard thrombus, but also remove soft thrombus well. Please refer to figure 1 The thrombus retriever 100 includes a hollow mesh-shaped main body formed by connecting several grids 110, so the thrombus retriever 100 has a cavity, and the proximal end of the thrombus retriever 100 (that is, the end connected with the push-pull guide wire 200) and the distal end are both open, and two inlets 120 are arranged at intervals on the outer wall of the mesh tube, and each inlet 120 is surrounded by a plurality of grids 110 to form, so the mesh tube part provided with the inlet 120 has sufficient radial support force, and The pressure generated when in contact with the inner wall of the blood vessel is small, and the damage caused to the inner wall is also small. All the inlets 120 are connected with the cavity of the thrombus remover ...

Embodiment 2

[0050] The same parts of the thrombus remover 700 in Embodiment 2 and the thrombus remover 100 in Embodiment 1 will not be repeated here. The main difference is that, please refer to Figure 12 and Figure 13 , the outer wall of the thrombus retriever 700 in Embodiment 2 is provided with a plurality of inlets 720, and these inlets 720 are distributed in a spiral shape on the outer wall of the thrombus retriever 700, that is, the central points of all the inlets 720 are arranged along the Two adjacent points on the outer wall of the 700 are connected in turn to form a helix, which reduces the blind area of ​​thrombus retrieval, increases the probability of successfully capturing thrombus by releasing the thrombus retriever 700 once, shortens the operation time, and reduces the patient's pain. Please refer to Figure 13 The planar structural view of the thrombus retriever 700 after deployment shown in , among the multiple inlets 720 provided on the thrombus retriever 700 , two ...

Embodiment 3

[0053] The parts of the thrombus remover 800 in Embodiment 3 that are the same as the thrombus remover 100 in Embodiment 1 will not be repeated here. The main difference is that please refer to Figure 14 , the middle section 840 of the thrombus remover 800 in Embodiment 3 is a linear structure respectively connecting the distal end of the proximal section 830 and the proximal end of the distal section 850, and the linear structure is preferably formed by winding a plurality of braided wires , For example, a metal wire with a relatively large atomic mass (gold, thallium, tantalum, etc.) is wound spirally in the axial direction, and it also has a developing effect.

[0054] The thrombus retriever 800 with the middle section 840 of the linear structure can make the proximal end section 830 and the distal end section 850 of the thrombus retriever 800 swing at any angle, thereby adapting to the part of the tortuous blood vessel 500 and avoiding the thrombus retriever 800. Injury t...

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Abstract

The present invention relates to a thrombus retriever, which comprises a hollow network tubular body composed of several grid connections, at least two inlets are arranged at intervals on the outer wall of the thrombus retriever, and the at least two inlets are connected to the retriever. The cavity of the thrombus retriever is connected, and the area of ​​any one of the inlets on the outer wall of the thrombus retriever is 3 to 10 times the area of ​​any of the grids on the outer wall of the thrombus retriever, and from the At least two of said inlets have non-overlapping portions when viewed from one end of the latch towards the other. The thrombus remover of the present invention can not only effectively remove soft thrombus, but also effectively remove hard thrombus, thereby improving the efficiency of thrombus removal.

Description

technical field [0001] The invention relates to the technical field of interventional medical devices, in particular to a thrombus remover for intravascular thrombus removal. Background technique [0002] Stroke is a common type of disease in medicine, and stroke has become the first cause of human death. According to relevant epidemiological studies, 3 out of every 4 stroke patients suffer from varying degrees of disability. Acute ischemic stroke (AIS, commonly known as cerebral infarction) is the damage of nerve tissue caused by ischemic necrosis of local brain tissue caused by sudden blockage of blood flow in the brain. Acute ischemic stroke is the most common type of stroke and the main cause of death and disability in middle-aged and elderly people. Especially acute stroke caused by large vessel occlusion is a dangerous condition with high mortality or disability rate. Once a stroke occurs, it will cause great physical and mental harm to the patient, and it will also...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/221
CPCA61B17/221
Inventor 胡龙虎王萃
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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