Biopsy Needle Guide With Rotatable Slidable Couplings
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing devices for assisting in biopsies face challenges such as poor needle visibility, complexity of use, and lack of versatility in accommodating different ultrasound probes, leading to difficulties in aligning the needle with the ultrasound beam and ensuring accurate needle placement.
Innovation Solution
A device comprising a support for receiving an ultrasound probe, a rotatable and slidable needle guide, and an arm for holding the needle guide, equipped with sensors and an electronic data processor for real-time feedback and motion control, allowing precise alignment and positioning of the needle within the ultrasound image plane.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If mechanical needle guides are used to constrain needle movement, then needle alignment with ultrasound beam is improved, but device complexity increases
Solution Approach 1:
The needle guide employs rotatable and slidable couplings that allow dynamic adjustment of the needle's position and orientation. The arm can rotate relative to the support via the first coupling, and the needle guide can rotate or slide relative to the arm via the second coupling, enabling real-time adaptation to different biopsy requirements while maintaining alignment precision
Solution Approach 2:
The device is divided into separate functional modules: a support for the ultrasound probe, an arm with rotatable coupling, a needle guide with second coupling, and a collection needle. This segmentation allows each component to be optimized independently and facilitates easier assembly, adjustment, and maintenance while reducing overall system complexity
2Manufacturing precision
If robotic systems with multiple DOFs are used for needle insertion, then biopsy accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The arm incorporates rotatable and slidable couplings that enable dynamic positioning with multiple degrees of freedom. The first coupling allows rotation between the support and arm, while the second coupling enables rotation or sliding between the arm and needle guide, providing the necessary flexibility for accurate needle insertion without requiring complex robotic systems
Solution Approach 2:
The device pre-establishes the geometric relationships and alignment pathways through its mechanical structure. The rotatable and slidable couplings are configured to maintain proper orientation and positioning throughout the range of motion, eliminating the need for complex real-time control algorithms and simplifying operation
3Measurement precision
If fixed-angle needle guides are used, then needle alignment is improved, but adaptability to different procedures deteriorates
Solution Approach 1:
The needle guide system employs rotatable and slidable couplings that allow dynamic adjustment of the needle's angle and position. The arm can rotate relative to the support, and the needle guide can rotate or slide relative to the arm, enabling adaptation to different biopsy angles, depths, and anatomical locations while maintaining precise alignment with the ultrasound beam
Solution Approach 2:
The device is designed with universal adaptability to accommodate different ultrasound probe types and various biopsy procedures. The rotatable and slidable couplings provide a universal mechanism for achieving proper needle alignment across different procedural requirements, making the device versatile for multiple applications
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present disclosure relates to a device for assisting in collecting a biological sample from a subject using a collection needle, comprising: a support (1) configured for receiving an ultrasound probe (2); a needle guide (3) for receiving and guiding the collection needle (11); an arm (4) for holding the needle guide (3) to the support (1); a first coupling (5) between the support (1) and the arm (4); a second coupling (6) between the arm (4) and the needle guide (3); wherein the couplings are rotatable couplings, or one of the couplings is a rotatable coupling and another of the couplings is a slidable coupling.