Medical System and Liquid Circulation System for Brain Treatment

ChangeBridge: Patent Apps - Medical Devices (A61M)

Published March 26th, 2026

Detected March 26th, 2026

Summary

The USPTO has published a patent application (US20260083947A1) for a medical system and liquid circulation system designed for brain treatment. The system aims to efficiently deliver liquid to the brain while managing intracranial pressure fluctuations by controlling injection and discharge periods.

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What changed

This document is a publication of a patent application by TERUMO KABUSHIKI KAISHA for a medical system and liquid circulation system for brain treatment. The application, filed on December 5, 2025, and published on March 26, 2026, describes a system that controls the injection and discharge of liquid into the body cavity to manage intracranial pressure. The core innovation lies in alternating periods of liquid injection without discharge and liquid discharge without injection, with the volumes being substantially equal.

While this is a patent application and not a regulatory rule, it signals potential future technological advancements in medical devices for neurological treatments. Companies involved in neurosurgery, medical device manufacturing, and pharmaceutical delivery systems should be aware of this patented technology. Compliance officers in these sectors may need to consider how such innovations could impact future product development, regulatory submissions, and market competition.

Source document (simplified)

← USPTO Patent Applications

MEDICAL SYSTEM AND LIQUID CIRCULATION SYSTEM

Application US20260083947A1 Kind: A1 Mar 26, 2026

Assignee

TERUMO KABUSHIKI KAISHA

Inventors

Takashi KITAOKA

Abstract

A medical system and a liquid circulation system, which are capable of efficiently delivering the liquid to the treatment area of the brain while suppressing the fluctuations in the intracranial pressure. The medical system includes a control unit that executes control of setting a first period in which the liquid is injected into the body cavity and the liquid is not discharged from the body cavity and a second period in which the liquid is not injected into the body cavity and the liquid is discharged from the body cavity, and alternately repeating the first period and the second period to set an injection amount of the liquid in the first period to be substantially the same as a discharge amount of the liquid in the second period.