Vertebral Osteosynthesis Equipment Guiding Rod Alignment
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Solution Overview
Problem
Current vertebral osteosynthesis equipment requires a highly invasive anterior approach for implantation, complicating the surgical procedure and increasing risks during bone fusion between vertebrae.
Innovation Solution
A vertebral osteosynthesis system featuring a guiding rod that connects to the intervertebral implant before placement, allowing for a less invasive side approach by enabling precise alignment and assembly of connecting members through a coaxial hole system, with instruments designed for easy engagement and alignment on the guiding rod.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an anterior approach is used for implantation, then sufficient space is available for placing the connecting member and assembling the equipment, but the surgical procedure becomes highly invasive and complicated
Solution Approach 1:
The patent transitions from an anterior (frontal) surgical approach to a lateral (side) approach, changing the dimensional access route to the vertebral bodies. This dimensional shift allows the connecting member to be inserted through a less invasive lateral pathway while still achieving proper positioning and assembly with the intervertebral implant.
Solution Approach 2:
The guiding rod serves as an intermediary tool that facilitates the assembly process through the lateral approach. It provides a reference axis and alignment guide that enables the connecting member to be properly positioned and assembled without requiring the extensive exposure needed in anterior approaches, thus reducing surgical invasiveness.
2Object-affected harmful factors
If a lateral approach is used for implantation, then surgical invasiveness is reduced, but alignment precision of the connecting member with the implant becomes difficult to achieve
Solution Approach 1:
The guiding rod acts as a mediator that transfers and maintains alignment information from the implant to the connecting member during lateral approach surgery. It provides a stable reference axis that ensures the connecting member is aligned coaxially with the implant's hole, achieving the required precision without the need for complex positioning techniques.
Solution Approach 2:
The guiding rod is inserted and positioned in advance before the connecting member is placed. This preliminary action establishes the correct alignment pathway, allowing subsequent components to be accurately positioned relative to the implant. The pre-established reference axis simplifies the alignment process and ensures precision.
3Reliability
If the assembling member is placed after implant insertion, then the implant position is secured, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The guiding rod serves as a persistent intermediary reference that remains in place throughout the assembly process. It allows the assembling member to be accurately positioned and installed after the implant is in place, without requiring complex positioning maneuvers. The guiding rod simplifies the subsequent assembly steps by providing a continuous alignment reference.
Solution Approach 2:
The guiding rod is established in advance and remains in place to guide subsequent assembly steps. This preliminary positioning structure allows the connecting member and assembling member to be installed in a simplified manner after the implant is positioned, reducing the overall assembly complexity while maintaining reliability.
Data Source
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AI summary
This equipment comprises: -an intervertebral implant (1); -a member (2) for connecting vertebral bodies (100) of both treated vertebrae intended to be assembled to the intervertebral implant (1); -a member (3) for assembling the connecting member (2) to the intervertebral implant (1). According to the invention, -the intervertebral implant (1) comprises on its proximal side relatively to the direction of its introduction into the intervertebral space (102), a hole comprising two coaxial portions, i.e. a proximal portion of larger section and a distal portion of smaller section, these proximal and distal portions comprising respective connecting means; -the connecting member (2) comprises a hole which allows it to be engaged onto a guiding rod (50) intended to be inserted into said distal portion (13) of the hole of the implant (1), and the assembling member (3) comprises a conduit on this guiding rod (50).