catheter balloon

Abstract

The invention discloses a catheter balloon, comprising: a core wire; an outer tube, which is sheathed on the outside of the core wire, and defines a flow path for fluid to pass through with the core wire; an adjustment mechanism, which includes a fixed part and a movable part, The fixed part is attached to the distal end of the core wire, the fixed part is provided with a guide hole in the axial direction, and the movable part has a guide column for cooperating with the guide hole; the force applying part is used to apply force to the movable part so that the guide column Able to slide toward the bottom of the guide hole; a trigger mechanism having a locked state for keeping the guide post at a position away from the bottom of the guide hole and an unlocked state for allowing the guide post to slide freely; a balloon, Its two ends are respectively sealed and attached to the distal end of the outer tube and the movable part, and the inside of the balloon communicates with the flow channel; wherein: the trigger mechanism is located inside the balloon, and the trigger mechanism is based on the pressure of the fluid supplied to the inside of the balloon And switch from the locked state to the unlocked state.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a catheter balloon for interventional operations. Background technique [0002] During interventional surgery, when the stenosis of the blood vessels in the human body is found, the stenosis area is usually mechanically expanded by the catheter balloon (the stenosis area is mechanically expanded to minimize the degree of stenosis) ), specifically, the catheter balloon usually includes an outer tube, a core wire passing through the outer tube, and a balloon. The distal end of the core wire protrudes from the distal end of the outer tube. end and the distal end of the outer tube, the shape of the balloon is generally sleeve-like when it is not under fluid pressure. A channel for liquid to pass is defined between the outer tube and the core wire, and the proximal end of the outer tube communicates with the fluid supply device. [0003] When the outer tube is used to de...

AI Technical Summary

Problems solved by technology

[0004] Knownly, the balloon is made of elastic material, which is elastically deformed under the action of fluid pressure, and then expands. However, due to the influence of the elastic deformation capacity of the elastic material, the expansion capacity of the balloon is limited. size, and thus can not achieve the effect of maximum expansion of the narrow area

[0005] In the prior art, attempts are made to increase the inflated size of the balloon by increasing the radial size of the balloon in the free state. However, the larger radial size of the balloon in the free state affects affect the delivery process in the

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