Antherotropic blood cannula

The antegrade blood delivery cannula addresses cardiac load and vascular complications by using a flexible bag to adjust blood pressure and guide flow, ensuring efficient oxygenated blood delivery to the body, reducing cannula diameter and collisions.

JP7891233B2Active Publication Date: 2026-07-16KOBE UNIV
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
KOBE UNIV
Filing Date
2023-03-20
Publication Date
2026-07-16

AI Technical Summary

Technical Problem

Existing extracorporeal circulation assist devices, such as ECMO and IMPELLA, face issues with increased cardiac load and vascular complications due to retrograde blood pumping and large-diameter cannulas, which can delay cardiac recovery and cause lower limb ischemia.

Method used

A cannula designed for antegrade blood delivery from the ascending aorta, featuring an antegrade blood return section with a blood pressure adjustment mechanism and a U-shaped tip to reduce cardiac load and vascular complications, utilizing a flexible bag to adjust blood pressure and guide blood flow.

Benefits of technology

The cannula effectively reduces cardiac load and vascular complications by ensuring smooth antegrade blood delivery to the body, including the brain, while minimizing cannula diameter and preventing blood collisions, thus improving patient outcomes.

✦ Generated by Eureka AI based on patent content.

Smart Images

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Patent Text Reader

Abstract

Provided is a cannula with which it is possible to effectively and antegradely send blood from the ascending aorta, while reducing the diameter. This cannula, in which the distal end part thereof is disposed in the ascending aorta and blood fed from an external-membrane-type artificial lung is sent antegradely from the ascending aorta, comprises an antegrade blood return part 2 and a blood-sending tube 4, the antegrade blood return part 2 being provided at the distal end of the blood-sending tube 4. A guide wire tube 5 extending in the longitudinal direction from the base end part to the distal end part is disposed substantially at the center of the axis inside the antegrade blood-sending cannula 1. The blood-sending tube 4 is a tube provided on the base end side connected to the extracorporeal-membrane-type artificial lung. The antegrade blood return part 2 reverses the blood in the antegrade direction from the reverse direction and directs the blood toward the base end side, and is composed of a first blood return tube 6 provided on the base end side and a second blood return tube 7 provided on the distal side. The second blood return tube 7 is provided with a side hole 7a and a side hole 7b, and a part of a substantially hemispherical bag body 8 is adhered to the inside of the distal end.
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