Dual balloon capable of accurately positioning and expanding

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to the field of A61M25 / 04, in particular to a dual balloon capable of accurately positioning and expanding. The dual balloon comprises an inner balloon, an outer balloon and a cavity tube component, wherein the inner balloon and the outer balloon are both arranged to be of a closed cavity structure; the inner balloon is arranged in the cavity structure of the outer balloon; the inner balloon and the outer balloon are coaxially arranged; the material hardness of the outer balloon is greater than that of the inner balloon; the cavity tube component is arranged to be of a tube barrel type structure with the axial length; the cavity tube component extends into the cavity structures of the inner balloon and the outer balloon and penetrates through the inner balloon and the outer balloon; on the far end and the near end of the inner balloon, the inner balloon is respectively fixedly connected with the outer wall of the cavity tube component in a sealed mode; and on the far end and the near end of the outer balloon, the outer balloon is respectively fixedly connected with the outer wall of the cavity tube component in a sealed mode. The dual balloon is applied to the treatment process of narrow and calcified valvular diseases, and the balloon is prevented from sliding in an expansion process.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to the field of A61M25 / 04, in particular to a double balloon for precise positioning and expansion. Background technique [0002] The balloon is a common structure in medical devices that intervene in the human body. In the contracted state, the balloon enters the target position of the human body under the guidance of a catheter or a guide wire, and is filled and expanded by injecting pressurized gas or liquid. Use its own shape to exert a therapeutic effect in the human body, or fix the stent pressed on the balloon at the target position, and also apply the drug coated on the surface of the balloon to the target position. [0003] The most difficult problem to overcome during the application of the balloon is the positioning of the balloon, especially the problem of axial positioning. In some application scenarios, such as in the process of treating valvular regurgitation,...

AI Technical Summary

Problems solved by technology

[0004] Similar to the above-mentioned patent, the balloon needs to be expanded at a designated position, and the position in the human tissue after expansion must not change. If the position of the balloon is inaccurate during expansion, its design function cannot be realized. If the balloon is expanded Or if there is a change in position during the expansion process, not only the function cannot be realized, but it may even cause serious damage to the fragile human tissue of the disease, resulting in irreversible serious consequences

Images