Orthopedic Implant Insertion Device Guide Mechanism
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Solution Overview
Problem
Existing implants used for repairing and reconstructing bony structures face challenges in positioning and inserting between adjacent bony portions, particularly when they are closely spaced or obstructed by tissue, nerves, or vasculature, making the process difficult and time-consuming.
Innovation Solution
The development of instruments with guide members and adjustable frames that facilitate the precise placement of implants between bony portions, including guide surfaces and flanges to control the alignment and spacing of implants, and tamping instruments for tapered implants to ensure accurate insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional insertion methods are used for implants between adjacent bony portions, then the implant can be placed, but the process becomes difficult and time-consuming when bony portions are closely spaced or obstructed by tissue, nerves, or vasculature
Solution Approach 1:
The patent introduces a specialized insertion instrument as an intermediary device between the surgeon and the implant. This instrument includes guide members with guide surfaces that facilitate precise implant placement in difficult-to-access spaces between adjacent bony portions, such as vertebral bodies. The guide members provide a controlled pathway that overcomes obstacles like closely spaced bony portions, adjacent tissue, nerves, and vasculature, making insertion easier and faster without direct manual manipulation
Solution Approach 2:
The insertion instrument is divided into distinct functional segments: a proximal portion with a frame and a distal portion with guide members. This segmentation allows the guide members to be positioned and manipulated independently at the distal end, enabling precise navigation to the implant site while the proximal portion remains accessible for control and adjustment by the surgeon
2Stability of the object's composition
If the bony portions are spaced closely together, then the anatomical structure is preserved, but the implant insertion becomes difficult and time-consuming
Solution Approach 1:
The guide members extend along a longitudinal axis from the proximal to distal portion of the instrument, creating a three-dimensional pathway that navigates around obstacles. The guide surfaces on the guide members provide controlled engagement surfaces that guide the implant along a precise trajectory, enabling insertion even when bony portions are closely spaced by utilizing the longitudinal dimension of the instrument
3Object-affected harmful factors
If access to the space between bony portions is impeded by adjacent tissue, nerves, or vasculature, then the anatomical safety is maintained, but the implant placement becomes difficult and time-consuming
Solution Approach 1:
The insertion instrument acts as an intermediary that provides a controlled, protected pathway for implant delivery. The guide members with their guide surfaces create a defined channel that shields surrounding tissues, nerves, and vasculature from direct manipulation, allowing rapid implant placement without compromising anatomical safety or requiring time-consuming careful navigation around sensitive structures
Data Source
AI summary
Instruments for inserting an implant in a space between adjacent bony portions include a pair of parallel guide members extending distally from a proximal frame portion. Tamps and impaction instruments facilitate advancement of the implant between the guide members to the space between the adjacent bony portions.