Tilting Bone Borer for Variable-Diameter Surgical Openings

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Solution Overview

Problem

Existing bone drilling tools are limited in their ability to efficiently create bore openings of varying diameters required for different surgical procedures such as anchor insertion, drug administration, and implant placement during arthroscopic procedures.

Innovation Solution

A bone removal device with a movable bone borer that can transition between drilling and reaming states by tilting relative to the longitudinal axis, featuring a pusher element and a rotatable adjuster to change the bone borer's angle and extend radially, allowing for adjustable opening sizes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single bone drilling tool is used for all surgical procedures, then device simplicity is maintained, but the ability to create bore openings of varying diameters is insufficient

Engineering Contradiction:

Improveability to create bore openings of varying diametersVSAvoiddevice structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bone borer is made movable relative to the shaft, allowing it to tilt between a first position for drilling and a second position for reaming. This dynamic repositioning capability enables a single device to perform multiple functions (drilling and reaming) with adjustable opening sizes, resolving the contradiction between versatility and device simplicity.

Inventive Principle:

Principle #15Dynamics

2Productivity

If multiple separate tools are used for drilling and reaming operations, then functional versatility is achieved, but surgical procedure time increases

Engineering Contradiction:

Improvesurgical procedure timeVSAvoiddrilling and reaming functionality

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent combines drilling and reaming functions into a single integrated bone removal device. The bone borer can be positioned to perform drilling operations or reaming operations as needed, eliminating the need to switch between separate tools and thereby reducing surgical procedure time while maintaining functional versatility.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If the bone borer is fixed in position, then device simplicity is maintained, but the ability to adjust opening size is limited

Engineering Contradiction:

Improveopening size adjustmentVSAvoidadjustable mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The bone borer is designed with movable positioning capability, allowing it to tilt between a first position (for drilling) and a second position (for reaming). This dynamic adjustment mechanism enables opening size variation without requiring multiple separate tools, achieving adaptability while keeping the overall device structure relatively simple.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20250325279A1Adjustable drilling device and a method for use thereof

Publication Date: 2025.10.23 T A G MEDICAL DEVICES-AGRICULTURE COOPERATIVE LTD

AI summary

A bone removal device, including an elongated shaft having a longitudinal axis, a distal end and a proximal end; a movable bone borer movably coupled to the distal end of the elongated shaft, wherein the movable bone borer is configured to rotate around the longitudinal axis; and a rotatable bone borer adjuster mounted on a proximal side of the elongated shaft and to the movable bone borer, wherein the adjuster is configured to rotate around an axis which is different from a rotation axis of the movable bone borer.