Constrained Spinal Rod Delivery Instrument for Percutaneous Alignment
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Solution Overview
Problem
Current surgical methods for treating spinal disorders, such as scoliosis and degenerative disc disease, face challenges in efficiently delivering and aligning spinal implants within the spine, particularly in minimizing invasive procedures and ensuring stable fixation of vertebral rods.
Innovation Solution
A surgical system comprising a constrained minimally invasive rod insertion device with extenders and a lock mechanism that allows for the precise alignment and secure engagement of spinal rods with bone fasteners, enabling percutaneous lateral fusion procedures and adjustable engagement with multiple implant configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surgical methods are used to deliver and align spinal implants, then the implants can be securely fixedated to vertebral members, but the procedures are highly invasive and cause significant tissue disruption
Solution Approach 1:
The surgical system is divided into multiple independent components including a delivery instrument with separate first and second members, each capable of independently engaging with implant supports. This segmentation allows for minimally invasive percutaneous delivery while maintaining the ability to securely fixate implants through the fastener mechanism
Solution Approach 2:
The delivery instrument acts as an intermediary device that facilitates the insertion and alignment of spinal implants through minimally invasive access. The instrument's first and second members serve as mediators between the surgeon's manipulation and the final implant positioning, enabling secure fixation without direct exposure of the vertebral members
2Manufacturing precision
If traditional surgical methods are used to deliver spinal implants, then the implants can be properly aligned with vertebral members, but the procedures require significant invasive access
Solution Approach 1:
The delivery instrument comprises a first member configured to engage implant supports and a second member that can be independently positioned and aligned. This segmentation allows the surgeon to manipulate each member separately to achieve precise alignment of the implants with the vertebral members through minimally invasive access
Solution Approach 2:
The second member is configured to be movable relative to the first member, allowing dynamic adjustment and alignment of the implant during the procedure. This dynamic capability enables precise positioning through minimally invasive access without requiring fixed, invasive surgical pathways
3Stability of the object's composition
If rods are attached via fasteners to the exterior of vertebral members, then stability is provided to the treated region, but the surgical procedure becomes complex and time-consuming
Solution Approach 1:
The delivery instrument merges the functions of implant delivery, alignment, and securement into a single integrated system. The first and second members work together to simultaneously deliver and secure the implants to the vertebral members, reducing procedural complexity while maintaining stability
Solution Approach 2:
The delivery instrument is designed with multi-functionality, where the first member can engage implant supports and the second member can align and secure implants. This universal design allows a single instrument to perform multiple surgical functions, reducing overall procedure complexity while ensuring stable fixation
Data Source
AI summary
A surgical instrument comprises a first member including a first body connected to at least one second body. The first body is configured for disposal of an implant support having an outer surface. The at least one second body includes a capture element configured to dispose an implant support having an outer surface with the at least one second body such that the outer surfaces are spaced apart and each of the implant supports are engageable with a first implant. A second member is connected with the first member and is engageable with a second implant. The members are relatively movable to dispose the second implant with the implant supports and to align the second implant with at least one of the first implants. Systems and methods are disclosed.