Rotatable Bone Alignment Clamp for Hallux Valgus Correction
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Solution Overview
Problem
Existing surgical methods for correcting hallux valgus deformities, such as the Lapidus procedure, face challenges in effectively realigning the first metatarsal and great toe to reduce the intermetatarsal angle and hallux valgus angle, often requiring invasive fusion and limited adjustment capabilities.
Innovation Solution
The use of a clamping device with rotatable arms and guides that allow for precise manipulation of bone positions, enabling the reduction of the intermetatarsal angle and rotation of the first metatarsal in the frontal plane, facilitated by rotatable guides and locking mechanisms to secure the desired bone alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional Lapidus procedure is used to realign first metatarsal, then bone alignment is improved, but surgical invasiveness increases and adjustability is limited
Solution Approach 1:
The surgical device incorporates rotatable arms and guides that enable dynamic adjustment of bone positioning during surgery. The first arm can rotate about a first axis to adjust the position of the first bone, while the second arm can rotate about a second axis to adjust the position of the second bone, providing real-time adjustability without requiring invasive fusion procedures.
Solution Approach 2:
The device is divided into separate functional components including a first arm for manipulating the first bone, a second arm for manipulating the second bone, and rotatable guides for precise angular adjustment. This segmentation allows independent adjustment of each bone's position and orientation, enabling precise alignment while maintaining surgical flexibility.
2Adaptability or versatility
If rotatable guides are used to rotate first bone about longitudinal axis, then rotational adjustment capability is improved, but device complexity increases
Solution Approach 1:
The device combines multiple rotational adjustment capabilities into an integrated structure where the first arm rotates about a first axis and the second arm rotates about a second axis, with both arms connected to a common base. This merging of rotational functions into a unified device provides versatile adaptability for correcting various bone deformities while maintaining manageable device complexity through systematic design.
Data Source
AI summary
A device includes a first arm and a second arm. The first arm includes a first arm body that extends from a first end to a second end and a guide. The guide is rotatably coupled to the second end of the first arm body and is configured to be coupled to a first bone. The second arm includes a second arm body extending from a first end to a second end and is coupled to the first arm body such that it is rotatable with respect to the first arm body. The second arm is configured to engage a second bone. In use, rotation of the second arm body with respect to the first arm body changes the distance between the first bone and the second bone and rotation of the guide with respect to the first arm body rotates the first bone.