Allograft Bone Plug Cutting Tool for Cartilage Repair
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current surgical methods for repairing articular cartilage defects, such as lavage, arthroscopic debridement, and transplantation, fail to regenerate durable hyaline-like tissue that withstands joint loading and activity over prolonged periods, leading to temporary pain relief and eventual tissue degeneration.
Innovation Solution
A surgical kit comprising a sizing gauge, adjustable cutter guide, and cartilage plug coring assembly with a cylindrical coring bit and arbor, allowing for accurate cutting and placement of a cylindrical allograft cartilage implant plug into a blind bore to repair cartilage defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional surgical methods (lavage, arthroscopic debridement, transplantation) are used to repair cartilage defects, then temporary pain relief is achieved, but durable hyaline-like tissue regeneration does not occur leading to eventual tissue degeneration
Solution Approach 1:
The patent creates a precise physical copy of the defect geometry using a custom-made template from the actual defect, then uses this template to guide the creation of a matching allograft plug. This copying approach ensures the replacement tissue perfectly replicates the original cartilage architecture and fits the defect precisely, enabling durable hyaline-like tissue regeneration rather than temporary relief.
2Manufacturing precision
If a custom-made template approach is used to create an accurate defect model, then manufacturing precision of the implant plug is improved, but device complexity and time consumption increase
Solution Approach 1:
The patent performs preliminary action by creating the defect template and measuring the allograft bone plug before the actual transplantation surgery. This advance preparation allows precise customization of the implant to match the patient's specific defect geometry, achieving high manufacturing precision while streamlining the surgical procedure itself by having all measurements and templates ready beforehand.
3Measurement precision
If precise measurement and customization of the allograft plug is performed, then the fit and orientation accuracy in the blind bore is improved, but the surgical procedure time and complexity increase
Solution Approach 1:
The patent performs preliminary measurement and template creation before surgery, so that during the actual surgical procedure, the pre-fabricated template and pre-measured allograft plug can be quickly implanted with precise orientation. This preliminary preparation reduces intraoperative time and complexity while maintaining high measurement precision for plug orientation and fit in the blind bore.
Data Source
AI summary
The invention is directed toward a surgical kit having component parts capable of use to prepare a cartilage implant plug from allograft condyle. The kit comprises a sizing gauge used to measure surface of the allograft condyle so that a cartilage implant plug can be removed that corresponds to the contours of the defect site excised on a patient. An adjustable guide member is mounted in a fixed orientation over the allograft condyle in which a cylindrical graft cutter for cutting a cylindrical allograft bone plug having a cartilage cap and a bone end portion. A chamfering tool is used for chamfering the bone end of the allograft bone plug.