Two-Piece Endoscopic Spine Implant Instrument for Precise Deployment
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current endoscopic spine implant installation instruments face challenges in providing accurate placement and deployment of interbody spine implants within the constraints of an endoscope, necessitating a more precise and minimally invasive surgical approach.
Innovation Solution
A two-piece spine implant installation instrument comprising a handle assembly and a shaft assembly, where the shaft assembly has a clamp at its distal end to hold an expandable interbody spine implant, which is secured by a rotatable knob mechanism that allows for controlled insertion and release through an endoscope.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single-piece endoscopic spine implant installation instrument is used, then the device structure is simple, but it cannot provide accurate placement and controlled deployment of interbody spine implants
Solution Approach 1:
The installation instrument is divided into two separate pieces: a delivery instrument and an installation instrument. The delivery instrument delivers the implant to the target site, while the installation instrument provides controlled deployment and accurate placement. This segmentation allows each component to be optimized for its specific function, achieving precise placement without excessive overall complexity.
2Object-affected harmful factors
If traditional open surgery methods are used, then implant placement is straightforward, but tissue injury and post-operative pain are significant
Solution Approach 1:
The implant is delivered through the endoscope using a nested delivery system where the implant is contained within the delivery instrument. This allows minimally invasive access through small incisions while maintaining the capability for precise implant placement. The nested structure enables the implant to be transported to the target site through the endoscope's confined space and then deployed with precision at the destination.
3Object-affected harmful factors
If an endoscope is used for minimally invasive surgery, then tissue injury is reduced, but the instrument must fit through small incisions limiting instrument size
Solution Approach 1:
By dividing the installation system into separate delivery and installation instruments, each can be sized appropriately to fit through the endoscope while maintaining full operability. The delivery instrument is designed to fit through the endoscope's working channel, and the installation instrument is similarly sized but provides complete deployment control. This segmentation overcomes the size limitation by optimizing each component independently for its specific function.
Data Source
AI summary
A method for installing an expandable interbody (intervertebral) spine implant with a two-piece medical instrument via an endoscope, the two-piece medical instrument having a handle assembly and a shaft assembly configured for extension through the endoscope, the shaft assembly holding an expandable interbody spine implant when the shaft assembly is fully received by a head of the handle assembly, and releasing the spine implant upon retraction of the shaft assembly from the head of the handle assembly. The shaft assembly has a rod with a longitudinal bore and a sleeve situated on the rod that axially moves relative to the rod in response to the reception into and retraction from the handle assembly head, with the sleeve controlling capture and release of the implant by the rod. The distal end of the rod has a clamp formed by jaws that flex to capture and release the implant.