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Developing structure, stent and thrombus removal system

A rod and tail end technology, which is applied in the field of development structure, bracket and thrombus retrieval system, can solve the problem that the visibility effect is not ideal, and achieve the effect of increasing the far-end development effect, increasing the volume density and increasing the friction force

Active Publication Date: 2021-12-31
MICROPORT NEUROTECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the visibility effect of the development structure of the above thrombectomy device has not reached the ideal state

Method used

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  • Developing structure, stent and thrombus removal system
  • Developing structure, stent and thrombus removal system
  • Developing structure, stent and thrombus removal system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] image 3 It shows a structural schematic diagram of the free rod connected with the probe rod at the distal end of the stent in the developing structure according to an embodiment of the present invention. Figure 4 A schematic structural view of a developing spring with a first tail end in the developing structure according to an embodiment of the present invention is shown. Figure 5 A schematic structural view of the bracket in the development structure of Embodiment 1 of the present invention is shown. Figure 6 A front view of a developing structure according to an embodiment of the present invention is shown. Figure 7 A schematic diagram showing a developing structure, a developing spring with a first tail end, and a rod portion according to an embodiment of the present invention. Figure 8 A schematic diagram showing a development structure, a development spring with a second tail end, and a rod portion according to an embodiment of the present invention is wo...

Embodiment 2

[0079] Figure 10 A schematic diagram of winding a developing spring and a rod portion having a first tail end and a second tail end in the developing structure according to Embodiment 2 of the present invention is shown. Figure 11 It shows the front view of the developing structure of Embodiment 2 of the present invention.

[0080] Please refer to Figure 10 and Figure 11 The structures of the rod portion 101 and the developing sleeve 2 in the second embodiment are the same as those in the first embodiment, and the rod portion 101 is located at the distal end portion 104 of the bracket 11. Preferably, the developing sleeve 2 in the developing structure of the second embodiment of the present invention is also a developing Spring, the developing spring is wound from a developing wire, but the structure of the filling part 3 is different from that of the first embodiment, wherein the filling part 3 is a filling wire and / or a polymer filler mixed with a developing material, ...

Embodiment 3

[0084] Figure 12 A top view of the developing structure of Embodiment 2 of the present invention is shown. Figure 13 A front view of the development structure of Embodiment 3 of the present invention is shown.

[0085] Please refer to Figure 12 and Figure 13 The structure of the rod portion 101 and the developing sleeve 2 in the developing structure provided in the third embodiment is the same as that in the first embodiment, and the rod portion 101 is located at the distal end 104 of the bracket 11. Preferably, the developing sleeve in the developing structure in the second embodiment of the present invention 2 is also a developing spring, which is wound from one developing wire, but the structure of the filling part 3 is different from that of Embodiment 1, wherein the filling part 3 is a filling wire and / or a polymer filler mixed with a developing material , the filling filaments include at least one or more of the extended developing filaments of the developing slee...

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Abstract

The invention relates to a developing structure, a stent and a thrombus removal system. The developing structure comprises at least one developing sleeve, wherein the at least one developing sleeve is arranged at the outer side of at least one protruding part; and at least one filling part which is arranged in a gap between the developing sleeve and the protruding part. A filling structure is added in the developing sleeve, so that the developing effect is improved, and meanwhile, the friction force between the developing sleeve and the protruding part can be increased, and the developing sleeve is not prone to being separated from the protruding part. A first tail end in the filling part rewinds at a bifurcation of a wave rod of the stent, enters a developing spring and then is welded at a free end of a rod part, so that a closed loop is formed between the rod part and the developing spring, the tensile strength of the developing spring is improved, and the risk that the developing spring at the far end part of the stent falls off is lowered. A gap between the rod part and the developing spring clamps the first tail end and is used for providing the friction force, so that the developing spring and the first tail end form a self-locking structure.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a developing structure, a bracket and a thrombus retrieval system. Background technique [0002] Stroke, also known as stroke, is an acute cerebrovascular disease characterized by cerebral ischemia and hemorrhagic injury as the main clinical manifestations. The "China Stroke Prevention Report" released in 2018 pointed out that stroke in my country presents five characteristics: high incidence, high disability rate, high mortality rate, high recurrence rate, and high economic burden. Stroke has become the number one cause of death among Chinese nationals. On average, one person suffers from stroke every 12 seconds, and one person dies from stroke every 21 seconds. According to the comprehensive standardized prevalence rate in 2016, as many as 1.96 million patients die of stroke each year nationwide, and 70% of the survivors have permanent disabilities of varying degrees. Among all...

Claims

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Application Information

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IPC IPC(8): A61F2/91A61B17/22A61B17/221
CPCA61F2/91A61B17/22A61B17/221A61B2017/00831A61B2017/0092A61B2017/2212A61F2250/0098
Inventor 孟繁鹤候娟扈昕瞳田浩
Owner MICROPORT NEUROTECH SHANGHAI
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