Modular Bone Broach With Interchangeable Extensions
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Solution Overview
Problem
Current surgical instrumentation for preparing long bones for implantation procedures lacks a modular system that allows for user-selectable lengths of intramedullary canal removal, limiting precision and flexibility in bone preparation.
Innovation Solution
A modular bone preparation system comprising a main broach member and interchangeable extension members, enabling the user to select the appropriate length of removal by connecting the extension members to the main body, which can be used alone or with additional attachments for broaching and stabilizing the bone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-length broach is used for bone preparation, then the device structure is simple, but the adaptability to different implant sizes and anatomical requirements is limited
Solution Approach 1:
The broach is divided into a main body and multiple interchangeable extension members of different lengths. The extension members can be selectively attached to the main body to create broaches of various total lengths, allowing adaptation to different implant sizes and anatomical requirements while maintaining a relatively simple base structure.
Solution Approach 2:
The main body is designed with a universal interface that can accommodate multiple types of extension members. This universal design allows a single main body to perform multiple functions by simply changing the extension member, enhancing adaptability without proportionally increasing overall device complexity.
2Adaptability or versatility
If multiple fixed-length broaches are used to accommodate different removal lengths, then the adaptability is improved, but the device complexity and number of components increases
Solution Approach 1:
Instead of providing multiple complete fixed-length broaches, the system segments the broach into a reusable main body and interchangeable extension members. This segmentation allows the same main body to be used with different extension members, reducing the total number of components needed while maintaining the ability to prepare bones of various lengths.
Solution Approach 2:
The broach system transitions from a static fixed-length design to a dynamic configurable design where the effective length can be changed by attaching different extension members. This dynamic capability allows customization for different surgical requirements without requiring a separate instrument for each length.
3Manufacturing precision
If a modular system with interchangeable members is used, then the adaptability and precision are improved, but the ease of operation decreases due to assembly requirements
Solution Approach 1:
The extension members are pre-configured with specific lengths and attachment features that mate with the main body. This preliminary design of the connection interface ensures that assembly is straightforward and requires minimal adjustment during surgery, maintaining ease of operation while achieving precise bone preparation through the selected extension length.
Data Source
AI summary
A bone preparation system, such as a broach, includes at least a first member and a second member. The first member and the second member may be connected. Both the first member and the second member, when attached to the first member, are configured to directly contact and broach an anatomy.