Sacroiliac Joint Implant Fixation Against Shear and Rotation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The sacroiliac (SI) joint instability can lead to pain and mobility issues due to excessive or insufficient movement, and inflammation may require surgical intervention, with existing treatments being inadequate in providing stable joint fixation.
Innovation Solution
A joint stabilization system comprising a primary implant with threads and a secondary implant with anchors, designed to be inserted into the SI joint to provide fixation and resistance to shearing, rotational, and compressive forces, facilitating bony ingrowth and fusion through a combination of implants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing single-implant treatments are used for SI joint stabilization, then the treatment is simple, but the joint stability and fixation reliability are inadequate
Solution Approach 1:
The stabilization system is divided into two separate implants: a first implant with threads for anchoring in bone, and a second implant with anchors for additional fixation. This segmentation allows each implant to perform a specific function, thereby improving overall joint stability while maintaining manageable complexity through modular design
Solution Approach 2:
The system combines two different implant mechanisms (threaded implant and anchor-based implant) into a single integrated stabilization system. The threaded implant provides primary fixation while the anchor-based implant provides supplemental stabilization, creating a more reliable joint fixation system than either implant alone
2Reliability
If conservative care is used for SI joint inflammation, then the treatment is non-invasive, but the pain relief and stability improvement are insufficient
Solution Approach 1:
The treatment approach is segmented into two components: the threaded implant for structural stabilization and the anchor-based implant for enhanced fixation. This segmentation provides comprehensive pain relief and stability improvement that exceeds conservative care, while the modular nature keeps the surgical procedure manageable
3Stability of the object's composition
If too much movement is allowed in the SI joint, then the joint maintains natural mobility, but the joint becomes unstable and causes pain
Solution Approach 1:
The stabilization system is designed to dynamically balance stability and mobility. The threaded implant provides rigid fixation to prevent excessive movement and instability, while the anchor-based implant allows controlled movement within safe limits, maintaining joint function while preventing pain-causing instability
Data Source
AI summary
A sacroiliac joint implant system includes a primary implant configured to be received in a sacroiliac joint of a patient and a secondary implant configured to couple with the primary implant. The primary implant includes a body extending from a proximal end to a distal end and a plurality of threads extending from the body. The secondary implant includes a first anchor configured to anchor within a sacrum of the patient and a second anchor configured to anchor within an ilium of the patient.