Biopsy Needle Stand With Arching Boom And Adjustable Holes
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Solution Overview
Problem
Current needle stands for biopsy needles are complex and time-consuming to adjust, often requiring multiple parts to be moved for precise positioning, and may not securely hold the needle, leading to potential damage or exposure to radiation during imaging procedures.
Innovation Solution
A needle stand with an arching boom and base that includes a tube to retain the needle handle, featuring a convex curvature with multiple holes for adjustable positioning, allowing for quick and precise adjustment of the needle's angle and depth, compatible with various needle gauges, and a locking mechanism for secure hold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional needle stand with clip and guide arrangement is used, then the needle can be supported and guided, but the adjustment of needle position and angle is complicated and time-consuming
Solution Approach 1:
The needle stand is divided into a base portion and a boom portion that can be independently adjusted. The boom can be positioned at different angles relative to the base, and the needle support can be independently positioned along the boom, allowing for simplified, modular adjustment of each component separately rather than moving multiple interconnected parts simultaneously.
Solution Approach 2:
The needle stand incorporates dynamic adjustment capabilities where the boom can rotate relative to the base and the needle support can move along the boom. This dynamic structure allows the clinician to quickly adjust the needle position and angle by moving single components rather than reconfiguring the entire assembly, significantly reducing adjustment time.
2Measurement precision
If a traditional needle stand with multiple adjustable components is used, then precise positioning is possible, but the device complexity increases
Solution Approach 1:
The positioning system is segmented into independent adjustment stages: base orientation, boom angle, and needle support position along the boom. Each segment handles one degree of freedom, simplifying the control mechanism for each while maintaining overall positioning precision through the combination of these independent adjustments.
Solution Approach 2:
The stand uses dynamic mechanical joints that provide precise positioning through controlled movement ranges. The rotating boom and movable support create a dynamic system that achieves precise needle positioning through simple rotational and linear movements rather than complex multi-axis mechanisms.
3Reliability
If the needle is held in a traditional clip, then the needle can be secured, but the thin needle structure may be broken or damaged
Solution Approach 1:
The needle support function is extracted from a traditional clip mechanism and implemented through a larger, more robust needle support structure on the boom. This separate support element provides a broader contact area and more distributed holding force, reducing stress concentration on the thin needle structure while maintaining secure positioning.
Solution Approach 2:
The needle support acts as an intermediary between the needle and the boom structure. It distributes the holding forces across a larger area of the needle shaft rather than concentrating force at a single clip contact point, thereby securing the needle while minimizing the risk of damage to the thin needle structure.
4Reliability
If differently-sized clips are used for each needle gauge, then the needle can be held firmly, but the device complexity and variety of parts increases
Solution Approach 1:
The needle support structure is designed with universal compatibility to accommodate multiple needle gauges. Instead of requiring different clips for different needle sizes, the single boom-mounted support structure can adjust its position and orientation to securely hold various needle types, eliminating the need for multiple specialized clips.
Solution Approach 2:
The needle support structure allows for parameter adjustments in position, angle, and orientation along the boom to adapt to different needle gauges and requirements. By changing the positional parameters of the support rather than changing the support structure itself, the system maintains firm holding capability across different needle sizes without increasing device complexity.
Data Source
AI summary
Embodiments of a needle stand are disclosed that include a base, an arching boom, and a tube, wherein the needle stand supports a biopsy needle. The base defines a plane and the base is configured to attach to a patient. The boom is attached to the base and has a length and a convex curvature and defines a plurality of holes along all or a portion of the length. The tube is sized to retain a needle handle of the biopsy needle. Each of the plurality of holes is sized to retain the tube and each of the plurality of holes defines an axis. The plane and each of the axes form a unique point of entry angle for the biopsy needle. In one embodiment, each of the plurality of holes is spaced at an interval along the boom that corresponds to about 10° increment in the angle.