USPTO Patent Granted for Medical Instrument Valve Body

ChangeBridge: Patent Grants - Medical Devices (A61M)

Published March 24th, 2026

Detected March 25th, 2026

Summary

The USPTO has granted a new patent (US12582807B2) for a valve body and medical instrument designed to maintain sealing performance and a smooth insertion feeling. The patent, assigned to Terumo Kabushiki Kaisha, features a self-repairing material for the valve body and a coating to prevent gap closure.

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What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12582807B2 for a novel valve body and medical instrument. The invention, assigned to Terumo Kabushiki Kaisha, utilizes a self-repairing material in the valve body to maintain sealing integrity and prevent air/blood leakage during repeated insertion and removal of medical devices. A specific coating is applied to prevent the self-repairing material from closing the internal gap.

This patent grant signifies a new innovation in medical device technology. While not imposing direct compliance obligations, it may influence product development strategies for manufacturers in the medical device sector. Companies developing similar technologies should be aware of this granted patent and its claims, particularly concerning the materials and design features of valve bodies for medical instruments.

Source document (simplified)

← USPTO Patent Grants

Valve body and medical instrument provided with valve body

Grant US12582807B2 Kind: B2 Mar 24, 2026

Assignee

TERUMO KABUSHIKI KAISHA

Inventors

Satoshi Wada, Katsuaki Soma

Abstract

A valve body and a medical instrument provided with the valve body can stably maintain sealing performance for preventing air/blood leakage while maintaining a smooth insertion feeling even when various types of medical devices are repeatedly inserted and removed. The valve body includes a main body portion having oppositely facing first and second surfaces, an outer peripheral surface extending between the first and second surfaces, and an insertion portion having an inner surface defining a gap that allows insertion of a medical device and formed at least on the first surface. The main body portion contains a self-repairing material that allows self-repairing damage resulting from contact with the medical device. At least part of the inner surface of the insertion portion is provided with a coating layer that prevents the gap from being closed by self-repair when portions of the inner surface of the insertion portion contact each other.