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Thrombus suction catheter.

A technology for suctioning catheters and thrombus, applied in catheters, balloon catheters, medical science, etc., can solve the problems of thrombus shedding, low efficiency of thrombus suction, limited diameter of thrombus suction catheter, etc., and achieve rapid removal effect

Inactive Publication Date: 2017-12-15
南京普微森医疗科技有限公司
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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 problem that the limited diameter of the thrombus suction catheter in the prior art leads to the low efficiency of sucking thrombus and even the problem that the thrombus falls off

Method used

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  • Thrombus suction catheter.
  • Thrombus suction catheter.
  • Thrombus suction catheter.

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A 6F suction catheter with an outer diameter of 2 mm and an inner diameter of 1.5 mm is used to aspirate thrombus blocking intracranial blood vessels. The soft tip material at the distal end of the catheter is 35D Pebax, and the tracer embedded in the soft tip is pre-cut. Open spring coils wound by tungsten wire, such as Figure 7 . Under the action of external negative pressure, thrombus with a size of more than 1.8 mm enters the lumen of the soft tip of the distal end of the catheter, and the incised coil is supported by the thrombus, where the lumen becomes larger, and finally the thrombus is under the action of external negative pressure It is firmly adsorbed in the inner cavity of the distal end of the suction catheter, and the doctor withdraws the suction catheter from the patient's body. The blocked cerebral blood vessels restore blood flow, and the distal brain tissue and blood vessels restore blood supply.

Embodiment 2

[0035] A 6F suction catheter with an outer diameter of 1.8 mm and an inner diameter of 1.4 mm is used to aspirate thrombus blocking intracranial blood vessels. The soft tip material at the distal end of the catheter is 25D Pebax, and the tracer embedded in the soft tip is cut in advance. Platinum iridium developer ring, such as Figure 6 . Under the action of external negative pressure, thrombus with a size of more than 2 mm enters the lumen of the soft tip at the distal end of the catheter. Finally, under the action of external negative pressure, the thrombus is firmly adsorbed in the inner cavity of the distal end of the suction catheter. The doctor withdraws the suction catheter from the patient, and the blocked cerebral blood vessel restores blood flow, and the distal brain tissue and Blood vessels restore blood supply.

Embodiment 3

[0037] A 6F suction catheter with an outer diameter of 1.8 mm and an inner diameter of 1.4 mm is used to suck thrombus blocking intracranial blood vessels. The material of the soft tip at the distal end of the catheter is 80A PU, and the tracer embedded in the soft tip is completed by a flat gold wire Z-shaped open structures such as figure 2 and image 3 . Under the action of negative pressure outside the body, thrombus with a size of more than 1.5 mm enters the lumen of the soft tip at the distal end of the catheter. Under the action of external negative pressure, the thrombus is firmly adsorbed in the inner cavity of the distal end of the suction catheter, and the doctor withdraws the suction catheter from the patient's body, the blocked cerebral blood vessels restore blood flow, and the distal brain tissue and blood vessels restore blood supply .

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Abstract

The invention discloses a thrombus suction catheter. The thrombus suction catheter comprises a catheter body, and the distal end of the catheter body is provided with a soft head and an expandable tracer mark embedded in the soft head; the expandable tracer mark is one or more Z-shaped closed structures, wavy closed structures and precut or half-cut annular structures or precut or half-cut spring-shaped structures which are developed in visual light. When the maximum outer diameter and maximum inner diameter of the thrombus suction catheter are limited by the sizes of the applied blood vessels, the soft head at the distal end and the expandable tracer mark can effectively increase the radial sectional areas of a suction hole and a suction cavity, thrombus and other embolic substances in the blood vessels can be stably, efficiently and rapidly removed, and the problems of low suction efficiency and thrombus stripping caused by the small radial sectional area of the suction cavity in the prior art can be effectively solved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a thrombus suction catheter. Background technique [0002] In the field of medicine, the blood vessels of the human body are often blocked by the presence of thrombus, which leads to tissue necrosis in local tissues due to ischemia, which affects human health and even threatens human life. Thrombosis in cerebral blood vessels can lead to stroke (stroke), which is a common disease that seriously threatens human health, is the third leading cause of death today, and is also the first cause of long-term disability in adults. [0003] In order to solve the problem of thrombus blocking blood vessels, in the prior art, a thrombus suction catheter is usually used. By sending the catheter along the blood vessel to the thrombus site, negative pressure is directly applied to extract the thrombus, so that the blood vessel can re-establish hemodynamic force. However, due to the limited diamet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22A61M25/00A61M25/10A61F2/958
CPCA61B17/22A61B2017/22038A61B2017/22042A61B2017/22079A61F2/958A61M25/0043A61M25/0045A61M25/0067A61M25/10A61M2025/0008
Inventor 吕文峰魏诗荣吕浩然李敬伟
Owner 南京普微森医疗科技有限公司
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