High flow anti-bending guide catheter

Abstract

The invention discloses a high flow anti-bending guide catheter. The high flow anti-bending guide catheter includes a main catheter body; a liquid injection cavity is formed in the main catheter body;a guide head is obliquely arranged on an external front end of the main catheter body; a guide wire cavity is formed in the guide head; the guide wire cavity extends to an internal portion of the main catheter body, and the guide wire cavity positioned in the main catheter body is of a spiral structure and winds around the liquid injection cavity; a tail end of the guide wire cavity extends to aback end of the main catheter body, and is sealed; a guide wire is arranged in the guide wire cavity; a front end of the main catheter body is fixedly connected to a pressing type splitting locking joint; and a liquid discharging head is fixedly arranged on the back end of the main catheter. The high flow anti-bending guide catheter is reasonable in design, the spiral guide wire cavity and the guide wire can enhance the tenacity and the flexibility of the main catheter, the high flow anti-bending guide catheter is flexible for roundabout proceed paths and can reduce damage to tissues or bloodvessels, and the problem that bending, fracture and low flow of the conventional guide catheters can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of medical catheters, in particular to a high-flow anti-bending guiding catheter. Background technique [0002] In minimally invasive treatment, especially in vascular intervention or anesthesia treatment, the high flow rate of the catheter, the rigidity of the catheter, and the flexibility to prevent damage to the vessel wall or tissue, and the guidance and control of the catheter during the process, The fracture strength of the catheter requires high requirements. To avoid these risks, it is necessary to solve this problem in the catheter structure. [0003] Taking epidural anesthesia as an example, the basic outer diameter of the catheter is generally in the range of 0.7MM-1.1MM, and the flow rate of the catheter is 4-10ml / min. The breaking strength of the catheter is required to be 10N-15N. Therefore, these three requirements are relatively contradictory issues. When the outer diameter of the catheter ...

AI Technical Summary

Problems solved by technology

And the small pore size is easy to block, which brings more medical risks

As far as the current production materials are concerned, modified nylon PEBAX is generally used, but there are also many problems. However, in order to make the catheter convey smoothly, materials above 65D are generally used. As we all know, polymer materials are produced into cavities. After the catheter, the harder the material, the easier it is to discount

This undoubtedly brings risks to the operation, and the more rigid the hard object, the easier it is to damage the patient's tissue or dura mater, and bring secondary damage to the patient, and the combination of different patients or the strength that the dura mater can withstand is not the same. the same

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