Zygomatic Implant Trajectory Verification Apparatus
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Solution Overview
Problem
Current zygomatic implant surgical procedures lack effective methods to accurately verify the osteotomy trajectory, leading to risks of damaging vital structures such as the orbit and infratemporal fossa due to the difficulty in visualizing the drill's path during the osteotomy process.
Innovation Solution
An osteotomy trajectory verification apparatus comprising a straight rod portion and a sliding arm with a pointing tip, allowing the drill to be aligned and visualized along a parallel axis, enabling the verification of the drill's trajectory before the osteotomy, ensuring it avoids critical areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a drill is used to create a hole in the zygomatic bone without trajectory verification, then the surgical procedure is simple and quick, but the drill may enter and damage undesired areas such as the orbit and infratemporal fossa
Solution Approach 1:
The patent introduces a trajectory verification apparatus as an intermediary tool between the surgical plan and the actual drilling operation. The apparatus includes a drill guide that fits into a pre-formed osteotomy slot, allowing verification of the drilling trajectory before actual bone drilling. This mediator enables safe trajectory confirmation without requiring complex imaging equipment during the surgical procedure.
Solution Approach 2:
The patent implements preliminary action by creating a template or guide based on pre-surgical planning (CBCT scans and virtual surgical design) before the actual osteotomy procedure. The drill guide and trajectory verification apparatus are prepared in advance according to the planned osteotomy path, allowing the surgeon to verify the trajectory beforehand and make adjustments if necessary before committing to the actual bone drilling.
2Object-affected harmful factors
If a trajectory verification apparatus is introduced to ensure safe drilling path, then the risk of damaging vital structures is reduced, but the device complexity and procedural time increase
Solution Approach 1:
The trajectory verification apparatus and drill guide are prepared in advance based on pre-surgical CBCT scanning and virtual surgical design. By performing the trajectory planning and guide fabrication before surgery, the actual surgical procedure only requires inserting the pre-prepared guide into the osteotomy slot and verifying the trajectory, significantly reducing the time consumed during the surgical procedure itself.
Solution Approach 2:
The drill guide is designed to self-align and self-verify the drilling trajectory by fitting into the pre-formed osteotomy slot. The guide's geometry inherently ensures proper alignment with the planned osteotomy path, eliminating the need for complex real-time measurement or adjustment mechanisms during surgery. The system serves itself by using the pre-planned trajectory information embedded in the guide's structure.
Data Source
AI summary
An apparatus for verifying an osteotomy trajectory includes a straight rod portion extending along a first axis in a first direction, a sliding arm slidably coupled to the straight rod portion and configured to slide along a sliding direction on the straight rod portion along the first axis. The sliding arm may include a sliding portion slidably coupled to the straight rod portion to slide along the sliding direction, a pointing portion including a tip protruded along a second axis in a second direction, the second axis being at least substantially parallel to the first axis, and an extending portion having a first side attached to the sliding portion and a second side attached to the pointing portion. The apparatus further includes a fixed arm coupled to the straight rod portion and configured to mount a drill thereon to point the drill along the second axis toward the tip.