Multi-function Mounting Interface for Image-guided Robotic Biopsy
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Solution Overview
Problem
Conventional biopsy procedures, especially those involving MRI systems, face challenges such as repeated patient movement leading to reduced contrast agent effectiveness and image quality, difficulty in verifying biopsy site accuracy, and the need for large tissue removal, which can be time-consuming and invasive.
Innovation Solution
A tool mount adaptor system for medical instruments that includes a collar for holding medical devices, a locking mechanism for secure attachment to a medical insertion device, and a cannula holder assembly with a demobilizer to facilitate safe and minimally invasive insertion and retrieval of instruments, allowing for quick tool interchange without additional invasive procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional biopsy procedures are performed with repeated patient movement in and out of MRI magnet, then biopsy can be performed, but image quality deteriorates and contrast agent effectiveness is reduced
Solution Approach 1:
The patent combines multiple functions (biopsy tool holder, cannula holder, and mounting interface) into a single integrated adaptor assembly that remains attached to the robotic arm throughout the procedure, eliminating the need for repeated patient movement in and out of the MRI magnet while maintaining both biopsy capability and image quality
2Reliability
If conventional biopsy procedures are performed with repeated patient movement, then biopsy can be performed, but time consumption increases
Solution Approach 1:
The integrated adaptor assembly allows the biopsy tool and cannula to be mounted once on the robotic arm and remain in place throughout the entire procedure, including contrast agent administration and tissue sampling, thereby significantly reducing the time required compared to conventional methods that require repeated patient movement
3Measurement precision
If a relatively large volume of tissue is removed for biopsy, then diagnosis can be confirmed, but invasiveness and patient discomfort increase
Solution Approach 1:
The patent segments the tissue sampling process by using a hollow biopsy tool that can retrieve tissue cores through a cannula, allowing for minimal invasive access while obtaining sufficient tissue samples for accurate diagnosis. The tool design enables precise tissue extraction with minimal surrounding tissue damage
4Adaptability or versatility
If quick release interventional toolset is implemented, then tool interchangeability is improved, but device complexity increases
Solution Approach 1:
The adaptor assembly serves multiple functions: it holds the biopsy tool, holds the cannula, provides a mounting interface for the robotic arm, and includes locking mechanisms. This multi-functionality in a single integrated unit improves tool interchangeability while minimizing the increase in overall device complexity compared to separate components
Data Source
AI summary
Tool mount adaptors for interfacing a medical instrument with a medical insertion device are provided. The tool mount adaptor includes a collar for holding a medical instrument wherein the tool mount adaptor is releasably attachable to the medical insertion device. Cannula holder assemblies for a medical insertion device are also provided. The cannula holder assembly includes: (a) a cannula track; and (b) a cannula carriage slideably mounted on the cannula track comprising a cannula holder mount and a demobilizer. Medical insertion devices comprising the tool mount adaptors and/or cannula holder assemblies are also provided together with methods of using the medical insertion devices in diagnostic and/or therapeutic applications.