A non-vascular lumen guide wire

Abstract

The invention provides a guide wire for non-vascular cavity, which comprises a mandrel and a ball head made of metal materials, the outer diameter of the insertion end of the mandrel is smaller than the outer diameter of the non-insertion end, the ball head is connected to the mandrel insertion end, and the mandrel is sheathed A plastic coating layer is provided, the outer diameter of the ball head is larger than the outer diameter of the insertion end of the plastic coating layer, and the outer diameter of the ball head is not larger than the outer diameter of the non-insertion end of the plastic coating layer. By adopting a ball head with a diameter slightly larger than that of the plastic-coated layer at the distal end of the guide wire, it can effectively avoid defects such as the guide wire falling off during actual use, or the plastic-coated layer at the distal end is easy to roll up during insertion. And the ball head is made of metal material, the outer diameter of the ball head is large, and the visibility is strong under the endoscope and X-ray. The doctor can clearly observe the puncture site reached by the front end of the guide wire, and the positioning device is not required. The effect of preventing the guide wire tip from piercing the inner wall of the cavity can be realized.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a non-vascular lumen guide wire. Background technique [0002] When inserting a catheter into a non-vascular lumen such as a digestive tract, urinary tract, trachea, and other living body lumens, a guide wire can be used to guide the catheter to a target site in the living body lumen. The role of guide wires in medical procedures is generally to aid in the advancement and proper positioning of catheters and other medical devices within body cavities. Also, when using an endoscope to observe and treat a living body lumen, etc., a guide wire is used to guide the catheter inserted into the lumen of the endoscope to a target site such as the living body lumen. A guidewire is used when inserting a catheter in a lumen by first inserting the guidewire into the lumen and then advancing the catheter over the guidewire so that the guidewire can guide the catheter to the lesion. ...

AI Technical Summary

Problems solved by technology

However, although the ball head made of high molecular polymer can effectively avoid stabbing the inner wall, the hollow ball head made of the high molecular polymer has low strength, poor guiding, and is not easy to insert

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