Seals for surgical access instruments

JP7828391B2Active Publication Date: 2026-03-11COVIDIEN LP
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-06-11
Publication Date
2026-03-11

AI Technical Summary

Technical Problem

Existing surgical access instruments require seals that can adjust to multiple sizes and withstand multiple insertions while maintaining durability and preventing gas leakage during minimally invasive surgeries.

Method used

A cannula with an instrument valve housing and a valve assembly featuring a sealing assembly, guard assembly, and centering mechanism, including guard members with flap portions and petals, which engage and extend a septum seal to accommodate various instrument sizes and prevent seal inversion.

Benefits of technology

The solution provides a robust seal that adjusts to multiple instrument sizes, minimizes seal damage, and prevents gas leakage during instrument insertion and withdrawal, enhancing the durability and functionality of surgical access instruments.

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Patent Text Reader

Abstract

To provide a cannula for use in an access assembly.SOLUTION: A cannula for use in an access assembly includes an instrument valve housing including first and second housing sections and defining a cavity, and a valve assembly disposed within the cavity of the instrument valve housing. The valve assembly includes a seal assembly including an outer flange and a septum seal extending across the outer flange, a guard assembly disposed within the outer flange of the seal assembly, and a centering mechanism. The guard assembly includes a plurality of guard members. Each guard member of the plurality of guard members includes a ring portion and a flap portion. The flap portions of the guard members of the guard assembly are configured to engage and stretch the septum seal during reception of a surgical instrument through the valve assembly.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Access apparatus including seal component with protective guards

    JP2019037770A