Partial Targeting Device for Arthroscopic Surgery
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Solution Overview
Problem
Existing arthroscopic targeting devices are bulky and obstruct the surgical site, disrupting the space around the joint during minimally invasive procedures, while also requiring adaptation of medical instruments to fit the device.
Innovation Solution
A partial targeting device with a segment of a circle arc and radially extending aiming rods, featuring a LUER connection for compatibility with existing medical instruments, allowing for precise targeting without obstructing the surgical site and enabling easy detachment after alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a complete targeting device with arc and two aiming rods is used, then precise targeting of the arthroscopic surgical site is achieved, but the device obstructs the space around the joint and disrupts the surgical area
Solution Approach 1:
The complete targeting device is divided into two separate parts: a partial targeting device (arc with first aiming rod) that remains stationary for positioning, and a second aiming rod that is inserted into the joint. This segmentation allows the bulky arc structure to be removed after initial positioning, eliminating space obstruction while maintaining targeting precision through the coordinated use of both components
Solution Approach 2:
The second aiming rod is extracted as a separate insertable component from the complete targeting device. After the partial targeting device establishes the correct positioning and orientation, the second aiming rod is inserted through the arc structure into the joint, allowing the arc to be removed and leaving only the slender second aiming rod in place, thus eliminating the space-obstructing bulk while preserving the targeting function
2Measurement precision
If a custom connection device is used to attach the aiming rod to the arc, then precise alignment is achieved, but medical instruments from different manufacturers cannot be used
Solution Approach 1:
The connection device is designed with a LUER connection interface, which is a universal standard used by most medical instruments. This allows the partial targeting device to be attached to medical instruments from different manufacturers without requiring custom adapters, while the connection device maintains precise alignment capability through its specific mechanical design featuring a projecting tooth that engages with corresponding teeth on the instrument shaft
Data Source
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AI summary
A partial targeting device (10) for aiming an arthroscopic surgical site for a medical procedure, comprising a segment-shaped arc (12) with a radially extending first targeting rod (14) movable along the segment-shaped arc (12). It is proposed that a connecting device (20) be arranged on the segment-shaped arc (12) by means of which a medical instrument (42) having a shaft (46) can be attached to the partial targeting device (10) such that the shaft (46) is aligned as a second targeting rod (47) extending radially to the first targeting rod (14) (Fig. 5).