Catheter balloon

Abstract

The invention discloses a catheter balloon. The catheter balloon comprises a core wire, an outer pipe, an adjusting mechanism, a force application part, a trigger mechanism and a balloon, wherein thecore wire is sleeved with the outer pipe, and a flow channel allowing fluid to pass through is defined by the outer pipe and the core wire; the adjusting mechanism comprises a fixed part and a movablepart, the fixed part is attached to the far end of the core wire, a guide hole is formed in the fixed part in the axial direction, and the movable part is provided with a guide column used for beingmatched with the guide hole; the force application part is used for applying force to the movable part so that the guide column can slide in the hole bottom direction of the guide hole; the trigger mechanism is provided with a locking state for keeping the guide column away from the hole bottom position of the guide hole and an unlocking state for enabling the guide column to freely slide; two ends of the balloon are attached to the far end of the outer tube and the movable part in a sealed mode respectively, and the interior of the balloon is communicated with the flow channel; the trigger mechanism is located in the balloon, and the trigger mechanism is switched from the locking state to the unlocking state based on the pressure of fluid supplied into the balloon.

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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