Minimally-invasive thrombus removing device for treating vascular thrombosis

A technique for vascular embolization and embolization device, applied in the field of minimally invasive thrombectomy device, can solve the problems of high price and complex device structure, and achieve the effect of less damage

Inactive Publication Date: 2021-03-05
尤东侠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the structure of the device described in this patent is very complicated and expensive

Method used

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  • Minimally-invasive thrombus removing device for treating vascular thrombosis
  • Minimally-invasive thrombus removing device for treating vascular thrombosis
  • Minimally-invasive thrombus removing device for treating vascular thrombosis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as Figure 5 As shown, taking the device of the present invention to remove a hard arterial thrombus as an example, the doctor slowly pushes the outer tube 300 of the delivery system with the thrombus retriever 100 inside to pass through the thrombus 600, and then presses the inner tube of the delivery system The delivery system handle 400 at the proximal end slowly withdraws the outer tube 300 of the delivery system until the distal end and the main body of the retriever 100 are released, while the proximal end of the remover 100 is still pressed in the outer tube of the delivery system. Slowly turn the handle of the delivery system to drive the thrombus retriever to rotate to cut the hard large thrombus into smaller thrombus. At this time, the thrombus retriever and inner tube with thrombus can be slowly withdrawn from the patient's body. During the operation, the thrombus retriever 100 can also be fully released, thereby enveloping the thrombus. The distal end ...

Embodiment 2

[0061] Such as Figure 6 As shown, taking the device of the present invention for removing a thrombus in the lower extremity artery as an example, the doctor slowly pushes the outer tube 300 of the delivery system with a thrombus retriever inside to pass through the blocked peroneal artery thrombus 600 of the lower extremity, and then presses the inner tube of the delivery system. Slowly withdraw the delivery system outer tube 300 until the thrombectomy device 100 is completely released. Because the grid size of the distal end of the thrombus retriever is smaller than that of the proximal and middle segments, it can prevent small thrombus from flowing to the small blood vessels at the distal end during thrombus pulling. The handle of the delivery system is connected with a suction pump or a syringe, and negative pressure is applied to suck thrombus and blood out of the patient's body. The extracted blood passes through a blood filter of the present invention. The core part of...

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Abstract

The invention discloses a minimally-invasive thrombus removing device for treating vascular thrombosis. The minimally-invasive thrombus removing device comprises a thrombus remover, a conveying systemouter tube, a conveying system inner tube and a handle. The thrombus remover comprises a netting-tube-shaped proximal end, a distal end and a screw-shaped middle piece, and the distal end is coveredwith a macromolecular membrane. A distal end of the conveying system inner tube is connected with a proximal end of the thrombus remover, and the thrombus remover is gripped in a sandwiched chamber ofthe conveying system outer tube and the conveying system inner tube in a pressed manner. After the thrombus remover is released, the thrombus remover can be turned through twisting the handle, and the screw-shaped middle piece of the thrombus remover can play a role in cutting thrombi with relatively hard texture. During withdrawing of the thrombus-carrying thrombus remover, even if relatively small thrombi fall off, the relatively small thrombi will be captured by the distal end of the thrombus remover covered with the macromolecular membrane and cannot flow to and block up distal-end bloodvessels. A thrombus removing system disclosed by the invention is very suitable for removing arterial and venous thrombi, including obsolete thrombi with relatively hard texture and relatively large thrombi, blood flow reconstruction can be achieved quickly, and particularly, the death rate of pulmonary artery thrombosis can be lowered greatly.

Description

technical field [0001] The invention relates to a minimally invasive thrombectomy device, which belongs to the technical field of medical instruments. Background technique [0002] Vascular embolism refers to thrombus or plaque detachment that blocks the lumen of a blood vessel, preventing blood flow from passing through. Blood vessel embolism can lead to ischemia and even necrosis of the organs it supplies. Ischemic stroke (cerebrovascular embolism) and myocardial infarction (coronary embolism) are the two most common thrombotic diseases, and are currently recognized as the top two causes of death in the Chinese population. There are 3.3 million new stroke patients in my country every year, and about 1.6 million of them become disabled. Pulmonary embolism (PE) is a clinical and pathophysiological syndrome in which endogenous or exogenous emboli block the pulmonary artery or its branches and cause pulmonary circulation disturbance. Among them, the most important and commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/221A61B17/22
CPCA61B17/221A61B17/22012A61B2017/2215A61B2017/22072A61B2017/22017
Inventor 尤东侠
Owner 尤东侠
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