Surgical Targeting Device for K-wire Placement
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Solution Overview
Problem
Current methods for placing a K-wire in carpometacarpal joint replacement surgery rely heavily on surgical experience and require verification through X-rays, leading to prolonged procedures and potential bone weakening due to repeated repositioning.
Innovation Solution
A surgical targeting device with a dome-shaped convex outer surface and guidance through-hole for precise placement of a K-wire, featuring auxiliary through-holes for temporary attachment and a tool gripping structure for easy removal, allowing for accurate and efficient placement of a K-wire in the trapezium bone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If K-wire placement is based on surgical experience and verified by X-ray, then placement accuracy can be achieved, but surgical procedure duration is extended and bone strength is weakened due to repeated repositioning
Solution Approach 1:
The surgical guide is pre-configured with a targeting mechanism that includes a positioning element and a guide element aligned to receive the K-wire. This preliminary setup allows the K-wire to be placed directly at the correct location and orientation without requiring intraoperative verification and repositioning, thereby reducing surgical time while maintaining placement accuracy.
Solution Approach 2:
The surgical guide acts as an intermediary device between the surgeon and the K-wire placement process. It provides a physical guide that directs the K-wire to the precise target location, eliminating the need for repeated X-ray verification and repositioning operations, thus reducing both time loss and bone weakening.
2Measurement precision
If K-wire placement is based on surgical experience and verified by X-ray, then placement accuracy can be achieved, but bone strength is weakened due to repeated repositioning
Solution Approach 1:
The surgical guide is pre-configured with a targeting mechanism that includes a positioning element and a guide element aligned to receive the K-wire. This preliminary setup allows the K-wire to be placed directly at the correct location and orientation without requiring intraoperative verification and repositioning, thereby reducing surgical time while maintaining placement accuracy.
Solution Approach 2:
The surgical guide acts as an intermediary device between the surgeon and the K-wire placement process. It provides a physical guide that directs the K-wire to the precise target location, eliminating the need for repeated X-ray verification and repositioning operations, thus reducing both time loss and bone weakening.
3Productivity
If a surgical guide with dome-shaped convex outer surface is used, then placement efficiency and accuracy are improved, but device complexity increases
Solution Approach 1:
The surgical guide is divided into distinct functional segments: a dome-shaped convex outer surface for positioning and engagement with the bone, a targeting mechanism with positioning elements, and a guide element for K-wire insertion. This segmentation allows each component to perform its specific function efficiently while maintaining overall structural clarity and reducing complexity.
Solution Approach 2:
The dome-shaped convex outer surface provides a curved geometry that facilitates engagement with the bone structure and enables efficient positioning during surgery. This curved design simplifies the interaction between the guide and the bone, improving placement efficiency without requiring complex mechanical structures.
Data Source
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AI summary
Disclosed is a surgical targeting device (1) for assisting placement of an elongated guidance member (39) in a bone (55). The targeting device (1) comprises a bottom portion (13) having a dome-shaped convex outer surface (23) and comprising a guidance through-hole (27) extending along a guidance through-hole central axis (21) for receiving the guidance member (39). A top portion (11) of the targeting device (1) is configured to be gripped by a tool (57). Further, a surgical system is disclosed which comprises the surgical targeting device (1).