Double thermoform cannula

IL289206BActive Publication Date: 2026-08-01ABIOMED INC
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Patent Information

Application Number
IL289206
Authority / Receiving Office
IL · IL
Patent Type
Patents
Current Assignee / Owner
Priority Date
2019-06-28
Filing Date
2020-06-25
Publication Date
2026-08-01
Estimated Expiration
2040-06-25

AI Technical Summary

Technical Problem

Intravascular blood pumps face challenges during insertion due to tortuous paths and calcified anatomy, leading to damage to the pump assembly or the patient, as the cannula bears the majority of the load and may stretch or bend, causing interface damage between the cannula and pump components.

Method used

A double thermoform cannula with reinforced end portions that are stiffer than the medial portion, acting as strain relief sections to distribute stress and prevent separation from adjacent components, combined with a thermoformed structure that provides additional structural reinforcement and manufacturing yield improvements.

Benefits of technology

The reinforced cannula design reduces stress on interfaces, enhances structural stability, and minimizes the likelihood of kinking and separation, ensuring effective insertion and operation of the blood pump system.

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Abstract

Systems and methods for providing a reinforced cannula for use in a blood pump assembly. The reinforced cannula comprises one or more thermoformed reinforced end portions. The thermoformed reinforced end portions may be stiffer than a medial portion of the cannula, allowing the medial portion of the cannula body to stretch and bend more readily than the cannula ends when the cannula is subject to an applied stress, reducing the stress and strain on the cannula ends.
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