USPTO Patent Application: Catheter with interlocking transition interface

ChangeBridge: Patent Apps - Medical Devices (A61M)

Published September 26th, 2025

Detected March 26th, 2026

Summary

The USPTO has published a new patent application, US20260083935A1, detailing a rapid exchange catheter with an interlocking transition interface. The application, filed on September 26, 2025, describes specific design features for improved catheter functionality and stability.

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What changed

This document is a USPTO patent application (US20260083935A1) for a "Rapid Exchange Catheter with Interlocking Transition Interface." The application, filed on September 26, 2025, by inventors Danyong Zeng et al., describes a catheter design featuring an interlocking transition interface between shaft portions and an exchange port for guidewire insertion. The abstract details the engagement features designed to limit movement between the semi-tubular proximal shaft and the distal shaft receptacle.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on medical device manufacturers. However, it represents a new disclosure in the field of catheter technology. Companies involved in the development or manufacturing of catheters should be aware of this disclosure for potential intellectual property considerations and to understand emerging technological trends in the medical device sector.

Source document (simplified)

← USPTO Patent Applications

RAPID EXCHANGE CATHETER WITH INTERLOCKING TRANSITION INTERFACE

Application US20260083935A1 Kind: A1 Mar 26, 2026

Inventors

Danyong Zeng, Eanna P. Connolly, Onnik E. Tchulluian, Aran Murray, Duncan Z. Ashby

Abstract

Rapid exchange catheters with interlocking transition interfaces are disclosed. An example catheter includes an elongate body having a distal end portion carrying an interventional element thereon and a proximal end portion. The elongate body includes a distal shaft having a receptacle and a proximal shaft having a semi-tubular portion that is inserted into the distal shaft receptacle. The semi-tubular portion includes an engagement feature that limits movement of the semi-tubular portion with respect to the distal shaft receptacle. The catheter further includes an exchange port along an intermediate portion of the elongate body, and a guidewire lumen extending from the exchange port to the distal end portion of the elongate body.