Ring-Shaped Bone Grafting Substitute with Central Hole
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Solution Overview
Problem
Current bone grafting substitute methods require a secondary surgical operation for implant placement, prolonging the implant treatment period and lacking sufficient strength to firmly fix an implant screw.
Innovation Solution
A method for manufacturing a ring-shaped bone grafting substitute involves mixing biodegradable polymers, such as collagen, with bone material and injecting the mixture into a ring-shaped mold. The molding material is then freeze-dried and hot air dried to create a ring-shaped bone grafting substitute with a central hole for implant screw insertion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional bone grafting method is used requiring secondary surgery for implant placement, then the bone regeneration can be completed properly, but the implant treatment period is prolonged
Solution Approach 1:
The patent merges the bone grafting substitute and implant screw into a single integrated structure. The ring-shaped bone grafting substitute has a central hole that accommodates the implant screw, allowing both bone regeneration and implant placement to occur simultaneously in one surgical procedure, thereby eliminating the need for secondary surgery and shortening the treatment period while maintaining bone regeneration quality
2Loss of time
If an implant screw is inserted early without secondary treatment, then the treatment time is shortened, but the bone grafting substitute lacks sufficient strength to firmly fix the implant screw
Solution Approach 1:
The patent uses a composite material structure where the ring-shaped bone grafting substitute is made from a mixture of bone grafting material and biodegradable polymer. This composite structure provides sufficient mechanical strength to firmly fix the implant screw during the early healing phase, while the biodegradable polymer gradually degrades as new bone forms, transferring the load to the regenerated bone over time
3Loss of time
If a ring-shaped bone grafting substitute is used for simultaneous implantation, then the secondary surgery is eliminated, but the manufacturing process becomes more complex
Solution Approach 1:
The patent employs preliminary action by pre-forming the ring-shaped bone grafting substitute with a central hole and pre-embedding the implant screw during the manufacturing stage. This preliminary preparation allows the integrated structure to be implanted as a single unit during surgery, eliminating the need for secondary procedures. The manufacturing complexity is managed through mold injection techniques that efficiently create the ring shape with central cavity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for simultaneous implantation of the bone grafting substitute and placement of the implant, eliminating the need for a secondary surgical operation and significantly shortening the implant treatment period. The ring-shaped substitute provides sufficient strength to securely fix the implant screw.
Implementation Method 1
molding a ring-shaped bone grafting substitute having a ring shape by freeze-drying the molding material injected into the ring-shaped mold at a temperature lower than a predetermined reference temperature
Implementation Method 2
drying, by using hot air, the ring-shaped bone grafting substitute that has been completely molded
Data Source
AI summary
Provided is a method for manufacturing a ring-shaped bone grafting substitute. The method for manufacturing a ring-shaped bone grafting substitute includes a biodegradable polymer providing step of providing a biodegradable polymer, a molding material providing step of providing a molding material in which the biodegradable polymer and a bone material are mixed; a molding material injection step of injecting the molding material into a ring-shaped mold such that a hole is formed in the center thereof; and ring-shaped bone grafting substitute molding step of freeze-drying the molding material having been injected into the ring-shaped mold at a temperature lower than a predetermined reference temperature, thereby molding the resultant into a ring-shaped bone grafting substitute.