Sheathing canal replacement method

Abstract

The invention belongs to the field of medical instruments, and particularly relates to a sheathing canal replacement method which comprises the following steps: placing a guide wire, a catheter and a sheathing canal into a blood vessel, so that the guide wire is sleeved in the catheter, and the catheter is sleeved in the sheathing canal; removing the sheathing canal and the horn mouth of the catheter; replacing a new sheath tube core which can be sleeved on the catheter in a new sheath tube to be replaced; extending the new sheathing canal and the new sheathing canal core into the blood vessel along the catheter; removing the new sheathing canal core so that the new sheathing canal can be reserved in the blood vessel, in this way, a hardened guide wire does not need to be replaced to serve as a support to guide the sheathing canal to be slippery, a new sheathing canal core capable of being matched with a catheter is replaced, the catheter serves as the support to guide imbedding of the new sheathing canal and the new sheathing canal core, and the step of replacing the hardened guide wire is omitted in the middle. The whole replacement steps are simpler, the phenomena of dislocation, looping and the like in the hard guide wire replacement process are avoided, and it is guaranteed that the sheathing canal can be successfully replaced.

Description

technical field [0001] The invention is used in the field of medical instruments, and in particular relates to a method for replacing a sheath tube. Background technique [0002] When replacing the sheath tube in clinical work, it is often necessary to insert the guide wire and catheter first, then pull out the guide wire and replace it with a hardened guide wire, and then wear the sheath tube to be replaced under the support of the hardened guide wire. During the process of hardening the guide wire, due to the high hardness of the hardened guide wire, dislocation and looping are easy to occur during the threading process, resulting in the failure of sheath replacement. Contents of the invention [0003] The purpose of the present invention is to at least solve one of the technical problems existing in the prior art, and provide a method for replacing the sheath tube, which prevents the replacement of the sheath tube with a hardened guide wire as a support, avoids misalign...

AI Technical Summary

Problems solved by technology

[0002] When replacing the sheath tube in clinical work, it is often necessary to insert the guide wire and catheter first, then pull out the guide wire and replace it with a hardened guide wire, and then wear the sheath tube to be replaced under the support of the hardened guide wire. During the process of hardening the guide wire, due to the high hardness of the hardened guide wire, misalignment and looping are easy to occur during the threading process, resulting in the failure of sheath replacement

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