Collapsible circular staplers

The collapsible circular stapler addresses the issue of inconsistent staple formation and tissue damage by employing a pivotable anvil and staple cartridge assembly, ensuring stable staple ejection and tissue compression for reliable stapling operations.

WO2025155653A1PCT designated stage expired Publication Date: 2025-07-24INTUITIVE SURGICAL OPERATIONS INC
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Patent Information

Application Number
PCT/US2025/011769
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-01-16
Filing Date
2025-01-16
Publication Date
2025-07-24

AI Technical Summary

Technical Problem

Existing collapsible staplers face challenges in providing a stable and secure mechanism for staple ejection and tissue compression, leading to inconsistent staple formation and potential damage to tissues during the stapling process.

Method used

A collapsible circular stapler design featuring a mechanism that ensures consistent staple ejection and tissue compression by using a pivotable anvil and staple cartridge assembly, allowing for precise control over staple formation and tissue engagement.

Benefits of technology

The solution provides a stable and secure stapling process, ensuring consistent staple formation and minimizing tissue damage, thereby enhancing the reliability and effectiveness of the stapling operation.

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Abstract

Systems, devices and methods are provided for introducing and removing collapsible anvils to and from a target site in a patient, such as a proximal bowel during a colon resection procedure. A circular stapler instrument comprises a staple assembly comprising a plurality of staples and a cutting element and an anvil movably coupled to the stapling assembly. The anvil comprises a head and a shaft. The head comprises a tissue contacting surface defining staple forming pockets. The anvil head is configured for deploying between a collapsed configuration with a first diameter and an expanded configuration with a second diameter larger than the first diameter. This allows the surgeon to introduce the anvil in a collapsed state through a percutaneous penetration in the patient, such as a cannula, and then expand the anvil within the target site, such as the proximal bowel, for the stapling operation. In addition, the anvil may be collapsed after the procedure to facilitate removal of the anvil and reduction of stress on the staple line.
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Description

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Claims

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