Biopsy Needle Guide Marker Pin Pivot Axis Alignment
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Solution Overview
Problem
Current biopsy needle guides require complex computational calculations and software assistance for accurate angulation, leading to increased costs, potential errors, and prolonged biopsy procedures due to the need for precise trigonometric adjustments and software interaction.
Innovation Solution
A biopsy needle guide with a marker pin and optimized ergonomics, allowing for simple and rapid angulation using imaging methods, where the marker pin's pivot axes lie in the traverse plane, ensuring the reference point remains stationary and independent of pivot angles, enabling direct determination of the target position without software assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If software assistance is used for computational calculations and trigonometric adjustments, then positioning precision is improved, but device complexity and cost increase
Solution Approach 1:
The patent extracts and eliminates the software component from the system, achieving positioning precision through purely mechanical means. The marker pin with its precisely engineered pivot axes and the traverse plane geometry allow the operator to determine target position through visual alignment and simple trigonometric relationships written on the device, removing the need for complex computational software while maintaining accuracy.
Solution Approach 2:
The device performs its own positioning function through self-contained mechanical features. The marker pin's pivot axes are designed to lie in the traverse plane, creating a self-aligning system where the geometry itself provides the reference for positioning without requiring external software assistance or complex computational support.
2Measurement precision
If software assistance is used for computational calculations, then positioning precision is improved, but the procedure duration increases
Solution Approach 1:
By removing software components and computational processes from the system, the patent eliminates the time required for software interaction, loading, and calculation. The mechanical design with the marker pin and traverse plane allows for rapid visual alignment and direct determination of target position, significantly reducing procedure duration while maintaining precision.
Solution Approach 2:
The device is pre-configured with the marker pin having its pivot axes positioned in the traverse plane, and trigonometric relationships are pre-calculated and written on the device. This preliminary preparation eliminates the need for real-time computational calculations during the procedure, allowing the operator to directly determine target position through visual alignment.
3Ease of operation
If the marker pin pivot axes are positioned in the traverse plane, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent segments the marker pin into distinct functional components: the pin shaft, the pivot axes, and the marker part. This segmentation allows each component to be manufactured and assembled with controlled precision requirements, making the overall system more manufacturable while maintaining the geometric relationship that enables ease of operation.
Data Source
AI summary
Biopsy needle guide with pointer for performing a biopsy in a tissue of a patient in conjunction with an imaging method for imaging the tissue and identification of a target volume to be examined, comprising a needle guide head (2), which is freely movable in a plane via at least two degrees of freedom and is mounted so as to be movable about an axis (S) that does not stand perpendicular to this plane, and has a needle passage opening (20, 29), a marker pin (4), which can be inserted in an opening (20, 29) of the head (2) and contains a marker part (41), which can be imaged by the imaging method with good contrast, wherein, when the marker pin (4) is inserted in the opening (20, 29), the marker part (41) lies in the pivot axis (S) of the head (2), as well as a use of such a biopsy needle guide.