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Embolism microcatheter assembly

A technology of catheter components and microcatheters, which is applied in the field of medical devices and can solve the problems of inconvenient removal of catheters and easy damage to blood vessels

Active Publication Date: 2021-10-12
四川艾迈思生物医疗科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the prior art, when using a microcatheter to inject a liquid embolic agent, it is impossible to treat only a certain section of blood vessel, and the injected liquid embolic agent will flow into other blood vessels; at the same time, in order to reduce the impact of reflux, the existing After the proximal end is blocked in the technique, it is extremely inconvenient to take out the catheter, and it is easy to damage the blood vessel

Method used

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  • Embolism microcatheter assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] As shown in the figure, an embolization microcatheter assembly includes a catheter body 107, one end of the catheter body 107 is connected to a Luer connector 1 103 through a tube 104, a Luer connector 2 106 is connected to a tube 2 105, and a tube 3 102 is connected to There are three 101 luers. The liquid embolic agent can be injected through the first luer connector 103 , the auxiliary solvent can be injected through the second luer connector 106 , and the medium can be injected through the third luer connector 101 . In the conduit main body 107, there are flow channel 1 110, flow channel 2 112 and flow channel 3 111, wherein flow channel 1 110 and flow channel 2 112 are set through the catheter main body 107, and flow channel 3 111 only leads to the catheter main body The middle section of 107. One end of the first flow channel 110 is connected to the first pipe 104 , one end of the second flow channel 112 is connected to the second pipe 105 , and one end of the th...

Embodiment 2

[0045] The difference between this embodiment and the first embodiment lies in that the water-soluble degradable layer 108 is sealed and compressed on the outer side of the annular pouch 113 . The water-soluble degradable layer 108 is preferably starch or chitosan. When the product is not in use, the water-soluble degradable layer 108 can protect the annular pouch 113 from being damaged, resulting in rupture. When this product is used, the water-soluble degradable layer 108 begins to dissolve after the catheter body 107 is inserted into the blood vessel, thereby facilitating subsequent deployment of the annular pouch 113 .

Embodiment 3

[0047] The difference between this embodiment and the previous two embodiments is that an adsorption layer 205 is provided on the outside of the retaining body 201 , and the adsorption layer 205 is covered with a covering layer 213 . The adsorption layer 205 is a flexible layer uniformly distributed with grooves on the surface, and the cover layer 213 is a polymer soluble in DMSO and insoluble in water, such as DSDA. After the liquid embolic agent comes out from the outlet channel 202, the cover layer 213 dissolves, exposing the adsorption layer 205, and the adsorption layer 205 provided with grooves makes the micelles and the entrapped body 201 adhere more firmly, thereby facilitating the entrapped body 201 and the micelle group Obstruction of the distal end of the vessel.

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Abstract

The invention relates to the technical field of medical instruments, in particular to an embolism microcatheter assembly which comprises a catheter body connected with an interception body. the catheter body is provided with a third flow channel which is connected with an annular bag fixedly connected with the middle section of the catheter body in a penetrating mode; the interception body is fixedly connected with the catheter body through a solid filler layer; a fourth flow channel communicated with a first flow channel is arranged in the interception body, and is communicated with a plurality of outlet channels which are formed in the interception body in the circumferential direction through a material cavity; a fifth flow channel communicated with the second flow channel is arranged in the interception body, and is connected with a hydrogel foam layer mounted on the outer circumferential surface of the interception body through an annular cavity; a sixth flow channel communicated with the fifth flow channel is arranged in the interception body, and a blocking material is mounted at the joint of the fifth flow channel and the sixth flow channel; and the sixth flow channel is connected with an annular groove, and one side of the annular groove makes contact with the solid filler layer. The embolism microcatheter assembly can seal the far and near ends of a blood vessel and reduce the treatment risk.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an embolization microcatheter assembly. Background technique [0002] Cerebral arteriovenous malformation (AVM) is a disease of congenital local cerebrovascular variation. Intracranial blood vessels lose their normal vascular tissue structure and lack capillary beds between arteries and veins, resulting in abnormal arteriovenous shunts, resulting in venous hypertension and rupture. Danger. The existing treatment methods for AVM mainly include surgical resection, radiotherapy, and endovascular embolization. Endovascular embolization can seal AVM lesions, reduce AVM volume, block aneurysms and fistulas, and improve the safety of surgery and radiotherapy. Among them, the application of new liquid embolic agents through intravascular embolization is an important method for the treatment of AVM. [0003] For example, the publication number CN111001046B discloses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/12
CPCA61B17/12031A61B17/12113A61B17/12109A61B17/12136A61B17/12159A61B2017/12004
Inventor 黄奉康邓一兰杨安顺
Owner 四川艾迈思生物医疗科技股份有限公司