USPTO Patent Grant: Adapter assembly with constant velocity joints

ChangeBridge: Patent Grants - Diagnosis & Surgery (A61B)

Published March 24th, 2026

Detected March 24th, 2026

Summary

The USPTO has granted patent US12582401B2 for an adapter assembly with constant velocity joints, assigned to Covidien LP. This patent covers a drive assembly for surgical devices, including specific shaft configurations for improved functionality.

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What changed

The United States Patent and Trademark Office (USPTO) has granted patent US12582401B2 to Covidien LP for an "Adapter assembly with constant velocity joints." The patent details a drive assembly for surgical devices, comprising an input shaft, a middle shaft, and an output shaft with specific castellated and lobed portions designed for operable engagement. This grant is a formal recognition of novel intellectual property in the field of surgical device components.

This patent grant does not impose new regulatory obligations on medical device manufacturers. However, it signifies a new piece of intellectual property that may affect the design and manufacturing landscape for surgical devices. Companies operating in this space, particularly those using similar drive assembly mechanisms, should be aware of this granted patent to avoid potential infringement issues.

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Adapter assembly with constant velocity joints

Grant US12582401B2 Kind: B2 Mar 24, 2026

Assignee

Covidien LP

Inventors

Joseph T. Eisinger

Abstract

A drive assembly for an adapter assembly of a surgical device includes an input shaft, a middle shaft, and an output shaft. The input shaft includes a proximal portion configured for operable engagement with a drive member of a handle assembly and a distal portion including a first castellated portion. The middle shaft includes a proximal portion having a first lobed portion in operable engagement with the first castellated portion of the input shaft, and a distal portion having a second lobed portion. The output shaft includes a proximal portion having a second castellated portion in operable engagement with the second lobed portion.