Surgical Instrument Bidirectional Bone Fragment Collection

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Solution Overview

Problem

Current surgical instruments for cutting or shaving bone lack efficiency in harvesting and collecting bone fragments, especially when used manually or with power tools, as they are not designed for effective bidirectional cutting and fragment collection.

Innovation Solution

A surgical instrument featuring a cutting head with an annular arcuate blade and proximal openings connected via a central channel, allowing for bidirectional cutting and collection of bone fragments, with the cutting head configured to engage with a handle or power tool for enhanced cutting efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional cutting attachments are used, then bone cutting function is achieved, but bone fragment collection efficiency is poor

Engineering Contradiction:

Improvebone fragment collection efficiencyVSAvoidcutting attachment structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent merges the cutting function and bone fragment collection function into a single integrated cutting attachment. The cutting head includes both the cutting blade and a collection chamber with openings that allow bone fragments to be captured during the cutting process, eliminating the need for separate collection devices and improving overall efficiency.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The cutting attachment is designed to perform multiple functions simultaneously: cutting bone tissue with the blade while also collecting bone fragments through the collection chamber. This multi-functional design allows a single device to replace what would traditionally require multiple separate tools, enhancing productivity without proportionally increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If unidirectional cutting is used, then simple cutting action is achieved, but bidirectional cutting efficiency is lost

Engineering Contradiction:

Improvecutting speedVSAvoidcutting motion control

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The cutting attachment is designed to function effectively in both forward and reverse directions. The cutting blade and collection chamber are configured so that bone fragments are captured regardless of the direction of motion, allowing the surgeon to oscillate the tool back and forth through bone tissue more rapidly without losing cutting efficiency or fragment collection capability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The bidirectional cutting capability allows for continuous cutting action without requiring the tool to stop or change configuration when reversing direction. The collection chamber maintains its fragment-capturing function throughout the entire oscillating motion cycle, maximizing the useful cutting action time and improving overall cutting speed.

Inventive Principle:

Principle #20Continuity of useful action

Data Source

PatentUS9974548B2Surgical instrument for harvesting bone

Publication Date: 2018.05.22 RUSSO INVENTIONS

AI summary

A bone or tissue-cutting instrument for use with a manual handle or with a powered surgical tool includes an elongated shaft and a cutting head portion of a distal end of the shaft. The cutting head portion includes an annular arcuate blade located at the distal-most end of the cutting head portion for cutting or shaving adjacent tissue or bone. The cutting head portion may also include a distal opening defined by the arcuate blade and a proximal opening with a central passage therebetween for collecting and transferring cut bone or tissue cut by the arcuate blade.