Bone Graft Rasp Delivery for Minimally Invasive Decortication

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Solution Overview

Problem

Existing bone grafting procedures often require invasive surgeries or lack effective minimally invasive methods for delivering bone graft material and decorticating bone surfaces to enhance integration.

Innovation Solution

A bone graft delivery system with an elongated tube and a distal tip featuring openings and a rasp surface for delivering bone graft material and decorticating bone, which can be actuated to deliver bone graft material through a minimally invasive approach, using various materials and configurations for flexibility and visibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If open surgery implantation is used to deliver bone graft material, then the bone graft material can be effectively delivered to the target location, but the invasiveness of the procedure increases

Engineering Contradiction:

Improveeffective delivery of bone graft materialVSAvoidsurgical invasiveness

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical open surgery approach with a minimally invasive delivery system that uses a delivery device with a hollow body and opening to transport bone graft material through a needle or cannula directly to the target location, eliminating the need for surgical incisions and exposure

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces a delivery device as an intermediary between the bone graft material and the target location. This device includes a hollow body, opening, and optionally a needle or cannula that serves as a conduit to deliver the bone graft material minimally invasively to the decorticated bone surface

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If decortication is performed to expose cancellous bone for better integration, then bone graft integration is accelerated, but the procedure complexity increases

Engineering Contradiction:

Improvebone graft integrationVSAvoidprocedure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines the decortication function and bone graft delivery function into a single integrated device. The delivery device includes both a decortication element (such as a rasp or burr) and a bone graft material reservoir, allowing both functions to be performed in one minimally invasive procedure rather than requiring separate surgical steps

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The delivery device is designed with multi-functionality, serving both as a decortication tool and as a bone graft material delivery system. The device can perform decortication of the cortical bone to expose cancellous bone and then deliver bone graft material to the same site through the same access point

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Object-affected harmful factors

If a minimally invasive delivery system is used, then surgical invasiveness is reduced, but the precision of bone decortication decreases

Engineering Contradiction:

Improvesurgical invasivenessVSAvoidbone decortication precision

Core Design Contradiction:

Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The delivery device is segmented into distinct functional elements including a decortication element (rasp or burr) and a bone graft material delivery mechanism. This segmentation allows each element to be optimized for its specific function while working together through the same minimally invasive access point to achieve both reduced invasiveness and adequate decortication precision

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250360001A1Bone graft delivery system and method for using same

Publication Date: 2025.11.27 SURGENTEC LLC

AI summary

A bone graft delivery system includes a rasp having an elongate body extending between a proximal end and a distal end, a lumen extending through the elongate body and configured to receive bone graft material, a rasping surface removably couplable to the distal end of the elongate body and configured to decorticate bone material of a patient, and one or more openings configured to deliver bone graft material from the lumen.