Detachable Guide Pin for Minimally Invasive Bone Implantation
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Solution Overview
Problem
Current bone surgery guiding devices often require extensive image guidance and cumbersome procedures for placing therapeutic implants, particularly in areas like spinal vertebrae, where direct visualization is obscured by bone or soft tissue, necessitating improved minimally invasive guidance solutions.
Innovation Solution
The development of guiding devices comprising a rod and a guide pin, where the guide pin is initially implanted using image guidance and can later guide surgical devices like pedicle screws without the need for intraoperative imaging, utilizing a breakable intermediate portion to detach the rod from the guide pin, allowing for minimally invasive procedures and flexible placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a guide wire is used to direct a cannulated pedicle screw into a spinal vertebra, then the implant can be placed in a specific position, but extensive image guidance and cumbersome procedures are required during surgery
Solution Approach 1:
The guide pin is inserted into the bone prior to the actual implantation procedure, establishing the precise trajectory in advance. This preliminary action allows the main implant to be placed along the pre-established path without requiring complex intraoperative imaging guidance, thereby reducing surgical procedure complexity while maintaining implant placement precision
Solution Approach 2:
The surgical procedure is divided into separate stages: first inserting the guide pin to establish trajectory, then placing the main implant along that trajectory. This segmentation allows each component to perform its specific function independently, simplifying the overall procedure while ensuring precise implant placement
2Measurement precision
If image guidance technology is used during surgery to place therapeutic implants, then precise placement can be achieved, but costly imaging technologies are required during surgery
Solution Approach 1:
The guide pin is inserted and positioned with imaging guidance before the main surgical procedure. Once the guide pin is in place, it serves as a permanent reference that eliminates the need for costly intraoperative imaging technologies during the actual implantation, thereby reducing surgical costs while maintaining precise implant placement
Solution Approach 2:
The guide pin creates a physical copy or replica of the desired implant trajectory. Instead of relying on expensive real-time imaging during surgery, the guide pin itself becomes a tangible reference that guides the implant placement, replacing the need for costly imaging technologies while ensuring precise placement
3Measurement precision
If a guide pin is inserted into bone to guide a surgical device, then precise placement is enabled, but the guide pin requires removal or remains implanted creating additional complexity
Solution Approach 1:
The guide pin and the main surgical implant are designed to be integrated into a single unified structure. The guide pin serves as both a placement guide and part of the final implant configuration, eliminating the need for separate guide pin removal or additional management steps, thereby simplifying the overall procedure while maintaining precise device placement
Data Source
AI summary
Guiding devices and methods are disclosed that comprise a detachable guide pin. The guiding devices may be driven into a bone to place the detachable guide pin within the bone. Once placed in the bone, the guide pin can be used to guide a surgical device into the bone.