Hybrid Lateral-Posterior Sacroiliac Stabilization With Dual Implants

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Solution Overview

Problem

Existing treatments for sacroiliac joint disorders and injuries provide only temporary pain relief and are prone to surgical complications and infections, necessitating more effective stabilization methods.

Innovation Solution

A hybrid lateral and posterior approach is employed to stabilize the sacroiliac joint using transfixing and intra-articular implants, with precise incisions and sequential dilation to secure the implants across and within the joint, minimizing complications.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If non-surgical treatments are used for sacroiliac joint stabilization, then pain relief is provided, but the relief is only temporary and requires repeated administration

Engineering Contradiction:

Improveduration of pain reliefVSAvoidfrequency of repeated treatments

Core Design Contradiction:

Duration of action of moving objectVSLoss of time

Solution Approach 1:

The surgical implantation of stabilization hardware is performed in advance to provide long-term fixation, eliminating the need for repeated non-surgical treatments. The transfixing screw and intra-articular implant are placed during a single surgical procedure to achieve durable stabilization.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the temporary pharmacological intervention system with a permanent mechanical stabilization system. Instead of repeatedly administering steroids or pain medication, a rigid mechanical structure (transfixing screw and intra-articular implant) is installed to provide continuous joint stabilization.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Duration of action of stationary object

If surgical immobilization is used to stabilize the sacroiliac joint, then durable stabilization is achieved, but surgical complications and infection risk increase

Engineering Contradiction:

Improveduration of joint stabilizationVSAvoidsurgical complications and infection

Core Design Contradiction:

Duration of action of stationary objectVSObject-affected harmful factors

Solution Approach 1:

The stabilization system is divided into two separate components: a transfixing screw that spans the joint and an intra-articular implant that is contained within the joint space. This segmentation allows each component to perform its specific function while minimizing overall surgical trauma and infection risk.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses minimally invasive surgical techniques with specialized introducers and dilators as intermediaries to place implants through small incisions. This intermediary approach reduces direct exposure of deep tissues and bone to the external environment, thereby lowering infection risk while achieving durable stabilization.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Device complexity

If a single surgical approach is used for implant placement, then the procedure is simpler, but precise positioning and stable fixation are compromised

Engineering Contradiction:

Improvesurgical approach complexityVSAvoidimplant positioning precision

Core Design Contradiction:

Device complexityVSManufacturing precision

Solution Approach 1:

The patent combines two surgical approaches (lateral and posterior) into a single integrated procedure. The lateral approach is used for transfixing screw placement, while the posterior approach is used for intra-articular implant placement. Both approaches are performed during the same surgical session with coordinated positioning to achieve optimal stabilization.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS12426926B2Hybrid approach methods for sacroiliac joint stabilization

Publication Date: 2025.09.30 ROBBINS JOSEPH

AI summary

A lateral-posterior approach sacroiliac joint stabilizing method including, as viewed from a lateral view of a pelvic region of a prone patient, forming a first incision that is anterior to a posterior sacral wall and inferior to an ala and a second incision that is located along a lateral border of the sacroiliac joint, and thereafter, forming a first void that extends from the first incision, through the ilium, across the sacroiliac joint and into the sacrum and a second void that extends between the second incision and into the sacroiliac joint. A first implant is placed within the first void such that the first implant extends across the sacroiliac joint with its distal end within the sacrum and its proximal end flush with the lateral aspect of the ilium, and a second implant is placed within the second void such that the second implant extends into the sacroiliac joint.