Stapler Reinforcement Loader for Precise Stick-On Tissue Placement

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Solution Overview

Problem

Conventional surgical stapler reinforcement materials face issues with displacement and difficulty in precise application, especially for stick-on materials, due to varying cartridge sizes and port diameters, leading to application failures like lifting or peeling.

Innovation Solution

A tissue reinforcement material applicator with recesses and brush-like protrusions on a plate-shaped member, designed to securely hold and apply stick-on materials to surgical staplers, ensuring precise fitting and reducing application failures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a tubular reinforcement material is used to surround the surgical stapler cartridge, then the reinforcement material can adhere closely to the stapler and prevent displacement, but the stapler becomes larger and cannot pass through ports of smaller diameters

Engineering Contradiction:
Improveprevention of displacementVSAvoidsize of surgical stapler
Core Design Contradiction:
ReliabilityVSVolume of moving object

Solution Approach 1:

The invention extracts the reinforcement material from the tubular configuration that surrounds the entire stapler cartridge, and instead applies it only to the anvil portion where it is most needed. This localized application eliminates the bulk volume while maintaining the displacement prevention function through secure adhesion to the anvil surface.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The reinforcement material is segmented from a continuous tubular structure into discrete portions that are applied specifically to the anvil. This segmentation allows the material to be positioned precisely where reinforcement is needed without adding unnecessary volume to the overall stapler assembly.

Inventive Principle:
Principle #1Segmentation

2Volume of moving object

If a stick-on reinforcement material is used to reduce size, then the stapler can pass through smaller ports, but the material is more difficult to apply precisely and may lift or peel

Engineering Contradiction:
Improvesize of surgical staplerVSAvoidease of application
Core Design Contradiction:
Volume of moving objectVSEase of operation

Solution Approach 1:

The recesses are pre-formed in the anvil surface to receive and hold the reinforcement material in the correct position before stapling occurs. This preliminary structural preparation ensures that the stick-on material is automatically positioned correctly and held securely, eliminating the difficulty of precise manual application.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The recesses act as an intermediary structure between the stick-on reinforcement material and the anvil surface. These recesses provide mechanical interlocking and secure holding of the material, preventing lifting or peeling while maintaining the simple stick-on application method.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If a stick-on reinforcement material is used, then the material can be applied quickly, but precise positioning is difficult and application failures occur

Engineering Contradiction:
Improvespeed of applicationVSAvoidprecision of positioning
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The recesses are pre-formed in the anvil to define the exact position and shape where reinforcement material should be applied. This preliminary structural preparation allows the operator to simply place the stick-on material into the recesses without complex positioning procedures, achieving both speed and precision.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The recesses provide localized structural features at specific positions on the anvil surface, creating zones of enhanced holding capability. This local quality enhancement ensures that the reinforcement material is securely positioned exactly where needed, preventing displacement while maintaining simple application.

Inventive Principle:
Principle #3Local quality

Data Source

PatentUS20260041427A1Tissue reinforcement material loader and tissue reinforcement material loading kit
Publication Date: 2026.02.12 GUNZE LTD
  • US20260041427A1 patent drawing
  • US20260041427A1 patent drawing
  • US20260041427A1 patent drawing

AI summary

The present invention aims to provide a tissue reinforcement material applicator that enables quick, precise, and easy application of a stick-on tissue reinforcement material to a surgical stapler with less application failure, and a tissue reinforcement material application kit including the tissue reinforcement material applicator. Provided is tissue reinforcement material applicator for securing a stick-on tissue reinforcement material to a surgical stapler, the tissue reinforcement material applicator including a plate-shaped member, the tissue reinforcement material applicator having recesses opposing each other on both surfaces of the plate-shaped member, each recess having a shape corresponding to a shape of a portion of the surgical stapler to which the stick-on tissue reinforcement material is to be applied, each recess being continuous with the same edge of the plate-shaped member, each recess having brush-like protrusions on a bottom surface thereof, each recess having, in a side surface thereof, a securing groove for holding the stick-on tissue reinforcement material therein.