Hooked Blades and Tissue Catch for Controlled Capsulotomy Incisions

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Solution Overview

Problem

Existing surgical instruments cause trauma to adjacent tissue during capsulotomy procedures due to sharp tips and lack of effective tissue engagement mechanisms, leading to potential complications and prolonged operating times.

Innovation Solution

The development of surgical instruments with atraumatic features, including a blunt distal tip, cutting blades with hooks, and a catch mechanism to engage and retract tissue, minimizing trauma and improving surgical precision.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional sharp-tipped surgical instruments are used for capsulotomy, then cutting efficiency is improved, but trauma to adjacent cartilage and soft tissue increases

Engineering Contradiction:

Improvecutting efficiencyVSAvoidtrauma to adjacent tissue

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The instrument applies different geometric properties to different parts: the distal tip is blunt to protect cartilage, while the cutting blades have sharp edges for efficient incision. This local differentiation allows each part to perform its specific function optimally without causing harm to surrounding tissues.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The instrument is divided into distinct functional segments: a protective blunt distal tip, cutting blades with specific geometry, and a catch mechanism. Each segment performs a separate function, allowing the blunt tip to prevent trauma while the cutting blades provide efficient incision capability.

Inventive Principle:

Principle #1Segmentation

2Device complexity

If traditional surgical instruments without tissue engagement mechanisms are used, then device complexity is reduced, but surgical control and precision deteriorate

Engineering Contradiction:

Improveinstrument structureVSAvoidsurgical control

Core Design Contradiction:

Device complexityVSEase of operation

Solution Approach 1:

The catch mechanism engages the capsular tissue in advance before the cutting blades make the incision. This preliminary engagement stabilizes the tissue and provides surgical control, allowing precise positioning and controlled cutting without requiring complex additional mechanisms.

Inventive Principle:

Principle #10Preliminary action

3Loss of time

If traditional instruments without effective tissue engagement are used, then operating time is extended, but surgical precision may be compromised

Engineering Contradiction:

Improveoperating timeVSAvoidsurgical precision

Core Design Contradiction:

Loss of timeVSManufacturing precision

Solution Approach 1:

The catch mechanism engages and secures the capsular tissue before cutting begins, eliminating the need for repeated positioning adjustments during the procedure. This preliminary engagement reduces operating time while maintaining high surgical precision through stable tissue control.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS12426918B2Atraumatic instruments and associated methods for capsulotomy

Publication Date: 2025.09.30 ARTHREX INC

AI summary

This disclosure relates to surgical instruments and methods for incising soft tissue. The instruments may include one or more atraumatic features for reducing a likelihood of trauma to adjacent tissue.