Offset Bone Drill Guide Fixation for Precise Patella Bores

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Solution Overview

Problem

Existing bone drilling devices are inadequate for accurately determining the entry and exit points during arthroscopic procedures, particularly for non-elongate bones like the patella, lacking suitable fixation techniques for bones of various shapes and sizes.

Innovation Solution

A bone drill guiding device with a drill entry portion and a bone securing portion, featuring adjustable fixation elements and multiple contact points for secure engagement, allowing precise alignment and stabilization of the drill, especially suitable for non-elongate bones.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If existing bone drilling devices are used, then drilling can be performed, but accurate determination of entry and exit points cannot be achieved, particularly for non-elongate bones like the patella

Engineering Contradiction:

Improveaccuracy of entry and exit point determinationVSAvoidsuitability for bones of various shapes and sizes

Core Design Contradiction:

Measurement precisionVSAdaptability or versatility

Solution Approach 1:

The guiding device is designed with a universal fixation mechanism that can adapt to different bone shapes and sizes. The fixation element can engage with bones of various geometries through its adjustable contact surfaces, allowing the same device to function across multiple bone types including non-elongate bones like the patella, thereby achieving both measurement precision and adaptability

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If fixation techniques for elongate bones are used, then fixation can be achieved, but the device is not suitable for smaller or non-elongate bones

Engineering Contradiction:

Improvefixation stabilityVSAvoidapplicability to different bone types

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The fixation element incorporates dynamic adjustment capabilities, allowing it to adapt its configuration to match different bone geometries. The element can be adjusted to provide stable fixation for elongate bones while also being configurable to securely engage smaller or non-elongate bones, maintaining reliability across diverse bone types

Inventive Principle:

Principle #15Dynamics

3Productivity

If traditional guiding devices are used, then drilling can proceed, but surgical time is increased and trauma is minimized only with stable fixation

Engineering Contradiction:

Improvesurgical timeVSAvoidsurgical trauma

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The device establishes stable fixation and precise guiding alignment before the drilling operation commences. By pre-positioning the guiding element and securing it to the bone, the device eliminates the need for repeated adjustments during drilling, thereby reducing surgical time while simultaneously minimizing trauma through stable, trauma-reducing fixation from the outset

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP4262586B1Offset guiding device

Publication Date: 2026.02.04 T A G MEDICAL DEVICES-AGRICULTURE COOPERATIVE LTD

Figure 1A~1D
Figure 2A~2B
Figure 2C

AI summary

A bone drill guiding device, comprising: a drill entry portion including a first contact point for engaging a first side of a bone, wherein the drill entry portion includes at least one bore sized to receive a bone drill therethrough; a bone securing portion including a second contact point for engaging a second side of the bone, the second side of the bone opposite the first side of the bone; wherein the device includes a third contact point on one of the drill entry portion and the bone securing portion; and a coupling to selectably rigidly connect the drill entry portion and the bone securing portion for positioning the drill entry portion and the bone securing portion on opposite sides of the bone.