Surgical Press Shaft With Threads For Bone Insertion

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Solution Overview

Problem

Conventional methods for stabilizing joints, such as the sacroiliac joint, lack a controlled and efficient mechanism for inserting surgical devices, often relying on manual pounding which is not precise or effective.

Innovation Solution

A surgical press system with an elongated shaft featuring threads and a press element that rotates to pull the shaft into the bone, aligning and securing surgical devices within the bone tissue, while cutting flutes and a collection region manage bone material.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If a mallet is used to pound a protective instrument into the bone region, then the instrument can be inserted into the bone, but the insertion process lacks precision and control

Engineering Contradiction:

Improvecontrolled insertionVSAvoidinsertion precision

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patent replaces the traditional mallet-pounding mechanical system with a threaded screw system that converts rotational motion into controlled linear advancement. The threads on the shaft engage with the bone tissue, allowing the instrument to be screwed into the bone in a controlled manner rather than pounded, providing both ease of operation and precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the insertion mechanism from impact-based (mallet) to thread-based advancement. The threaded shaft allows for controlled depth adjustment and precise positioning by rotating the shaft, enabling the operator to control the insertion depth and orientation accurately.

Inventive Principle:

Principle #35Parameter changes

2Manufacturing precision

If threads are added to the shaft to enable controlled advancement into bone, then insertion precision is improved, but device complexity increases

Engineering Contradiction:

Improveinsertion precisionVSAvoidshaft structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The threaded shaft serves multiple functions: it provides controlled advancement into the bone, enables depth adjustment, allows for easy removal by reversing the threading action, and maintains alignment during insertion. By combining these functions into a single threaded mechanism, the patent achieves precision without proportionally increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If cutting flutes are included to manage bone material, then bone debris removal is improved, but device complexity increases

Engineering Contradiction:

Improvebone material managementVSAvoidshaft structure

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent merges the cutting function (flutes) with the advancement function (threads) into a single integrated shaft structure. The cutting flutes and threads work together during the same insertion operation, eliminating the need for separate cutting and debris removal steps, thereby improving productivity without proportionally increasing complexity.

Inventive Principle:

Principle #5Merging (Combining)

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The system provides a controlled and efficient method for inserting surgical devices into bone tissue, ensuring precise alignment and stabilization, thereby addressing the limitations of traditional manual insertion methods.

Implementation Method 1

threads extending along a distal portion the shaft. The threads are configured to pull the shaft into bone as the shaft rotates

Methodology Applied

Scientific EffectFriction: Friction

Implementation Method 2

cutting flutes extending along a distal portion of the cannulated shaft

Methodology Applied

Scientific EffectAbrasion: Abrasion

Data Source

PatentUS10792053B2Press system for setting a surgical device

Publication Date: 2020.10.06 ASFORA IP LLC

AI summary

Disclosed herein is a surgical press for setting a surgical device into bone. The surgical press system includes an elongated shaft having a distal portion and a proximal portion. The shaft is configured for insertion into a guide. The surgical press system includes threads extending along an axial portion of the distal end of the shaft. The threads are configured to pull the shaft into bone as the shaft rotates. The surgical press system includes a press element associated with a proximal portion of the shaft such that as the shaft is rotated, the threads pull the shaft into the bone causing the press element to press the surgical device into the bone. The surgical press system includes a collection region located in the distal portion of the shaft and configured to receive bone material removed from the bone due to advancement of the shaft. The surgical press system includes a locating element configured to position the surgical device in a predetermined orientation with respect to the shaft as the press element presses the surgical device into the bone.