A self-expanding stent introduction device

Abstract

The application provides a self-expanding stent introduction device, which includes a catheter and a binding tube, wherein the catheter includes a tube body, a tapered buffer tube and a tube base, and the tube base includes a tapered part and a tapered part connected to the tapered part. The main body of the tube seat with a shaped inner cavity, the tube body includes a straight tube of the tube body and a bell mouth at the proximal end of the tube body connected to the straight tube of the tube body. There is a gap between the tapered parts, the tapered buffer tube is sleeved between the proximal end of the tube body and the outside of the tapered part, the restraint tube is inserted into the bell mouth of the proximal end of the tube body, and the self-expandable stent is pushed from the restraint tube directly into the tube through the push rod. body. The advantage of this device is that the self-expanding stent can be directly inserted from the restraining tube into the straight tube of the tube through the push rod.

Description

technical field [0001] The present application relates to the field of medical devices, in particular to a self-expandable stent introduction device. Background technique [0002] Intravascular devices such as catheters are frequently used in the medical field. Catheters are typically inserted into a patient's femoral artery, radial artery, carotid artery, or jugular vein and passed through the patient's blood vessels to reach the heart, brain, or other target anatomy. Typically, a guidewire is first guided to the target anatomy, and one or more catheters are then passed over the guidewire and guided to the target anatomy. Once in place, the catheter may be used to deliver drugs, stents, embolic devices, radiopaque dyes, or other devices or substances used to treat the patient in the desired manner. In other cases, the catheter and guidewire are simultaneously delivered toward the target anatomy while the guidewire is within the catheter, and then the guidewire is delivere...

AI Technical Summary

Problems solved by technology

During the bonding process, the glue enters from the far end of the tube base. When the glue is about to penetrate into the proximal end face of the tube body and the matching part of the tube base, it is necessary to turn on the UV lamp as soon as possible. Often because of this process, the glue may penetrate through the end face Matching parts, resulting in defective products

[0007] The present application aims to provide a self-expandable stent introduction device, which includes a catheter and a binding tube matching the catheter, so that the self-expanding stent can directly enter the tube body through the binding tube, without the stent being unable to enter the tube body or passing through the tube body. Cases where forceful entry into the catheter causes deformation of the tip of the stent

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