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Thrombus treatment system

A technology for processing system and thrombus, applied in the field of medical devices, can solve the problems of red blood cell damage, sequelae of thrombectomy, and excessive blood loss of patients, and achieve the effect of wide indications, reduction of sequelae of thrombectomy, and small damage.

Pending Publication Date: 2020-08-18
SUZHOU TIANHONGSHENGJIE MEDICAL INSTR CO LTD
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AI Technical Summary

Problems solved by technology

However, too long negative pressure time often leads to excessive blood loss in patients, and high-pressure rapid stirring may cause red blood cell damage and lead to hemolysis, which may easily lead to the occurrence of sequelae of thrombectomy

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0077] Such as Figure 5 and Figure 6As shown, there is only one agitator 43, which is shaped by several braided memory wires, and can be retracted to the proximal end through the second sheath tube 42 to realize self-expansion. When the first sheath tube 41 is dragged, the memory wire 44 The degree of adhering to the wall and the drag force can be controlled by adjusting the opening degree of the agitator 43 by the retracted length of the second sheath tube 42 .

[0078] The first sheath 41 runs through the agitator 43 and the axis of the first sheath 41 coincides with the centerline of the agitator 43 , and the agitator 43 is fixed on the first sheath 41 by welding or other processes.

[0079] The shape of the net basket can be a shape commonly used in the prior art, such as a spherical shape, a shuttle shape, and the like. The material of the memory wire may be a memory alloy such as nickel-titanium alloy.

Embodiment approach 2

[0081] The agitator 43 is a plurality of sequentially arranged along the axial direction of the first sheath tube 41, such as Figure 7 , Figure 8 As shown, there are two stirrers 43 . Two adjacent agitators 43 are connected by an elastic member 45 so that two adjacent agitators 43 can move closer or farther apart along the axial direction of the first sheath tube 41 .

[0082] Such as Figure 7 to Figure 9 As shown, the elastic member 45 is integrated with the first sheath tube 41 , and the elastic member 45 is formed like a spring by performing spiral cutting on a section of the first sheath tube 41 .

[0083] When the elastic member 45 is in a static state (that is, the elastic member 45 is neither extended nor compressed), the distance between two adjacent agitators 43 is 5-10 mm.

[0084] The agitator 43 is a mesh basket made of memory wire 44 , for example, a nickel-titanium alloy tube is heat-set after laser cutting. The stirrer 43 is spherical, and the diameter of ...

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Abstract

The invention relates to a thrombus treatment system which comprises a first catheter, a second catheter, a plugging device and a stirring device, the first catheter is provided with a first channel,the second catheter is provided with a second channel, the plugging device comprises a third catheter and a plugging device which is arranged at the far end of the third catheter and has an open stateand a closed state, the stirring device comprises a first sheathing canal, a second sheathing canal arranged outside the first sheathing canal in a sliding and sleeving mode and a stirring assembly arranged at the far end of the first sheathing canal. A large amount of thrombus in the inferior vena cava can be removed under the condition that relative safety is guaranteed, the venous valve and the venous vessel wall are protected, the blood loss amount is controllable, the operation steps are simple, operation is more convenient, the operation time can be shortened, and the hospitalization cost of a patient is reduced.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a thrombus treatment system. Background technique [0002] Thrombotic diseases include arterial thrombosis, venous thrombosis, and thromboembolism. Existing treatments mainly include vascular thrombectomy, catheter contact thrombolysis, and percutaneous mechanical thrombectomy. Surgery requires anatomical separation and incision of blood vessels, such as femoral artery, femoral vein or brachial artery incision, etc. With the development of endovascular interventional technology and the innovation of materials, this open surgical method is gradually replaced by minimally invasive interventional endovascular treatment , that is, catheter contact thrombolysis and percutaneous mechanical embolectomy. Due to the high bleeding risk of thrombolytic drugs and extremely strict indications for catheter-based thrombolysis, a large proportion of patients have contraindications for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22
CPCA61B17/22012A61B2017/22051A61B2017/22067A61B2017/22079A61B2017/22094
Inventor 张磊冯海全王晓天李晓强王永刚关丽鹃李靖
Owner SUZHOU TIANHONGSHENGJIE MEDICAL INSTR CO LTD
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