Self-Osteotomizing Bone Implant with Spiral Thread
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Solution Overview
Problem
Current bone implant technologies face challenges in achieving consistent and rapid anchoring to bone, leading to instability and increased post-operative pain due to unpredictable bone structures and the need for precise osteotomy creation, which is complicated by bone density variations and the risk of overheating during drilling.
Innovation Solution
A self-osteotomizing and self-grafting bone implant with a spiral thread and channels that cuts its own osteotomy, collecting bone shavings for autogenous grafting, providing macro-stabilization and facilitating rapid osseointegration by maintaining vital bone integrity and vascularization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional drilling methods are used to create osteotomy, then bone material is removed to make space for implant, but bone shavings are discarded and initial stability is compromised
Solution Approach 1:
The patent applies the discarding and recovering principle by capturing bone shavings that would normally be discarded during drilling and reusing them as autogenous graft material. The implant design includes features to collect and retain bone particles generated during osteotomy creation, transforming waste material into a valuable resource for enhancing implant integration and stability.
2Strength
If implant diameter is increased to improve initial stability, then anchoring strength is enhanced, but post-operative pain increases due to bone expansion
Solution Approach 1:
The patent applies segmentation by dividing the implant into multiple functional zones with different thread characteristics. The implant features varying thread depths, pitches, and densities along its length, allowing different sections to perform specialized functions such as cutting, compaction, and anchoring. This segmented approach enables the implant to achieve stability without requiring uniform increases in overall diameter that would cause painful bone expansion.
3Productivity
If drilling speed is increased to improve surgical efficiency, then osteotomy creation is faster, but bone overheating and damage risk increases
Solution Approach 1:
The patent applies self-service by designing the implant to automatically manage its own cooling and lubrication during insertion. The implant structure incorporates channels or surfaces that facilitate natural coolant flow and heat dissipation without requiring external cooling systems or frequent surgical intervention to manage temperature, enabling faster drilling speeds while preventing bone overheating.
4Manufacturing precision
If sequential drilling with multiple progressively larger holes is used, then osteotomy precision is improved, but surgical time and complexity increase
Solution Approach 1:
The patent applies preliminary action by pre-configuring the implant with integrated cutting edges and thread structures that perform multiple osteotomy functions in a single insertion action. The implant design includes predetermined cutting geometries and thread patterns that automatically create the appropriate osteotomy shape and size without requiring multiple sequential drilling steps, thereby maintaining precision while reducing surgical time.
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
The implant achieves rapid and efficient osseointegration, reducing the time required for bone integration to less than half of traditional methods, enhancing initial stability and reducing the risk of implant failure by creating a precise osteotomy and utilizing autogenous bone fragments for grafting.
Implementation Method 1
An osteotomy blade extends outwardly from at least a portion of the core body and forms a spiral thread having multiple turns around the core body to the tip
Implementation Method 2
The threads of the fastener take advantage of the three properties of compressibility, flexibility and malleability of the receiving material to engage it with large enough frictional force so as to secure the fastener to the recipient material
Implementation Method 3
self-osteotomizing and self-grafting bone implant which creates its own osteotomy and facilitates bone growth and integration of the implant
Data Source
AI summary
A bone implant includes a head and a core body extending from the head to a tip. An osteotomy blade extends outwardly from at least a portion of the core body to form a spiral thread. Channels form bone cutting edges of the implant. The implant, and particularly the osteotomy blade, is configured to self-osteotomize and direct cut bone into the channels to facilitate bone growth and grafting and integration of the implant to the bone.