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Intracranial thrombus aspiration catheter device

A technology for suctioning catheters and thrombus, which is applied in the fields of suction equipment, medical science, surgery, etc. It can solve the problems of inability to judge thrombus extraction, insufficient suction force, and inability to carry out contrast agents at the same time, so as to shorten the time of suction and operation , Fast suction speed, reduce the effect of excessive blood loss

Pending Publication Date: 2022-03-29
玮铭医疗器械(上海)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the defects such as insufficient suction force existing in the current suction thrombus extraction, and to solve the technical problem that the suction and injection of the contrast medium cannot be carried out simultaneously in the prior art, and the extraction of the thrombus cannot be judged.

Method used

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  • Intracranial thrombus aspiration catheter device
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  • Intracranial thrombus aspiration catheter device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. The self-priming suction catheter is composed of a three-way Y-shaped handle and a suction catheter. The suction catheter is a coaxial multi-cavity structure; the suction catheter body includes an outer tube 7, a reinforcing layer 9 and an inner tube 8; A reinforcing layer 9 is arranged between the outer tube 7 and the inner tube 8;

[0030] 2. The suction catheter is composed of a proximal fluid support section and a distal flexible section;

[0031] 3. The proximal end communicates with the liquid inlet on the extension section of the braided tube of the suction catheter through the side hole of the Y-shaped handle;

[0032] 4. There are two channels in the inner tube of the liquid inflow channel, which communicate with the lumen of the suction catheter at the junction of the support section and the flexible section;

[0033] 5. The length of the liquid-through section of the proximal support is 1200mm, and the length of the flexible section of the distal end is 5...

Embodiment 2

[0035] 1. The self-priming suction catheter is composed of a three-way Y-shaped handle and a suction catheter. The suction catheter is a coaxial multi-cavity structure;

[0036] 2. The suction catheter is composed of a proximal fluid support section and a distal flexible section;

[0037] 3. The proximal end communicates with the liquid inlet on the extension section of the braided tube through the side hole of the Y-shaped handle;

[0038] 4. There are three channels in the inner tube of the liquid inflow channel, and they communicate with the lumen of the suction catheter at the junction of the support section and the flexible section;

[0039]5. The length of the liquid-through section of the proximal support is 1000mm, and the length of the flexible section of the distal end is 300mm;

Embodiment 3

[0041] 1. The self-priming suction catheter consists of a three-way Y-shaped handle and a suction catheter. The suction catheter is a coaxial multi-cavity structure;

[0042] 2. The suction catheter is composed of a proximal fluid support section and a distal flexible section;

[0043] 3. The proximal end communicates with the liquid inlet on the extension section of the braided tube through the side hole of the Y-shaped handle;

[0044] 4. There are 5 channels in the inner tube of the liquid inflow channel, which communicate with the lumen of the suction catheter at the junction of the support section and the flexible section;

[0045] 5. The length of the liquid-through section of the proximal support is 700mm, and the length of the flexible section of the distal end is 200mm.

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Abstract

The invention relates to an intracranial thrombus aspiration catheter device, and belongs to the technical field of medical instruments. Comprising a suction catheter body and a handle. The suction catheter body comprises an outer-layer tube and an inner-layer tube; a liquid inflow channel is arranged in the pipe wall of the inner-layer pipe and is communicated with a pipe cavity of the inner-layer pipe; the handle is a three-way Y-shaped handle; and the handle is provided with a suction port and an injection liquid communication interface which are connected with an external negative pressure source. The flow state of the liquid in the catheter body and the internal structure of the fluid can be changed, the blood viscosity and density are reduced, the viscosity of the catheter to the fluid is reduced, the direct suction force to thrombus or the impact force to thrombus is increased, and the thrombus extraction process is accelerated. The device is suitable for patients with different blood viscosities; the direct suction force to thrombus is larger; the in-place operation is easier; a contrast agent can be injected during aspiration, and the thrombus aspiration condition can be judged in real time; suction and operation time is shortened, and excessive blood loss of a patient is reduced.

Description

technical field [0001] The invention relates to an intracranial thrombus suction catheter device, which belongs to the technical field of medical instruments. Background technique [0002] Intravenous rt-PA thrombolysis is currently the only effective treatment for acute cerebral infarction proven by evidence-based medicine. However, the treatment time of intravenous thrombolysis is long, the damage to the ischemic brain tissue is large, and it is accompanied by the risk of hemorrhage, and the recanalization rate is very low; The recanalization rate of thrombus is only 6%, and the recanalization rate of common carotid artery thrombolysis is only about 27%. Moreover, the time window for intravenous thrombolysis is only about 4 hours. It can be seen from the above that intravenous thrombolysis alone is far from enough for cerebral artery occlusion, and intravenous thrombolysis alone is not enough to meet actual clinical needs. [0003] Mechanical thrombectomy is to delive...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22A61M1/00
CPCA61B17/22A61B2017/22079
Inventor 朱宽王震王国辉李志刚张坤刘锦
Owner 玮铭医疗器械(上海)有限公司
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