Thrombus aspiration catheter and catheter assembly
By designing a multi-row side hole group and connecting tube structure in the thrombus aspiration catheter, the problem of uneven aspiration pressure and flow rate was solved, achieving a higher aspiration rate and a larger aspiration area, thus enhancing the aspiration effect.
CN116269642BActive Publication Date: 2026-06-02BEIJING HEQINGHECHUANG MEDICAL TECH CO LTD
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Patent Information
- Application Number
- CN202310280709.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-21
- Publication Date
- 2026-06-02
- Estimated Expiration
- 2043-03-21
AI Technical Summary
Technical Problem
The existing suction cannula has uneven suction pressure and flow rate due to its side holes.
Method used
Design a thrombus aspiration catheter with an inner lumen divided into an aspiration chamber and a guidewire chamber. The sidewall has multiple rows of holes with the diameter of the side holes in each row of holes distributed in a circumferential gradient. The catheter is connected to a negative pressure aspiration device through a connecting tube with an inner diameter larger than the inner diameter of the lumen.
Benefits of technology
It improves the overall suction rate and suction area, reduces the impact of local side hole blockage, ensures uniform suction pressure and smooth fluid flow, and enhances the suction effect.
✦ Generated by Eureka AI based on patent content.
Abstract
This application provides a thrombus aspiration catheter and catheter assembly. The thrombus aspiration catheter includes: a tube body having an inner lumen with a first central axis; the inner lumen is divided into an aspiration chamber and a guidewire chamber that are not interconnected in a direction perpendicular to the first central axis; the guidewire chamber has a second central axis that is offset from the first central axis. The sidewall of the tube body is provided with multiple rows of holes spaced apart along the axial direction of the tube body. Each row of holes includes multiple side holes spaced apart along the circumference of the tube body. Each side hole communicates with the aspiration chamber, and the diameter of the multiple side holes increases with the vertical distance between the center of the multiple side holes and the second central axis. The thrombus aspiration catheter of this application embodiment can improve the stability of fluid flow within the tube body.
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