Handheld Biopsy Device with Integrated Syringe Vacuum Mechanism
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Solution Overview
Problem
Existing biopsy devices face challenges in providing a reliable, efficient, and cost-effective method for tissue removal that allows for precise matching of needle movements and vacuum generation, often resulting in unsatisfactory biopsy results, especially when examining hard tissue regions, and require external control units and vacuum sources.
Innovation Solution
A hand-held biopsy device with an elastic force-actuated clamping and shooting mechanism, featuring a biopsy needle module with a distally sharpened cutting blade and a hollow biopsy needle, where the outer hollow needle is slidably seated relative to the hollow biopsy needle, and a pressure source is integrated to enable autonomous operation without external control units or connecting lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual needle positioning and vacuum generation are performed separately, then device simplicity is maintained, but tissue sample removal precision and efficiency deteriorate
Solution Approach 1:
The patent combines the needle positioning mechanism and vacuum generation system into an integrated unit. The syringe mechanism simultaneously controls both the advancement of the biopsy needle and the generation of vacuum pressure, eliminating the need for separate manual operations. This integration ensures precise coordination between needle movement and vacuum application, directly resolving the contradiction between precision and complexity.
Solution Approach 2:
The patent introduces a coordinated control mechanism that acts as an intermediary between the operator and the dual functions of needle positioning and vacuum generation. By using a single syringe-driven system, the control mechanism synchronizes the timing and magnitude of both needle advancement and vacuum application, achieving precise tissue sample removal without requiring complex separate control systems.
2Ease of operation
If external control units and vacuum sources are used, then functional reliability is improved, but ease of operation and portability deteriorate
Solution Approach 1:
The patent merges the vacuum source, control unit, and biopsy needle mechanism into a single handheld device. The syringe mechanism serves both as the vacuum generator and as the needle positioning actuator, eliminating external connections and control units. This integration dramatically improves ease of operation and portability while maintaining functional reliability through the coordinated design of the combined system.
Solution Approach 2:
The device is designed to be self-contained and self-operating. The syringe mechanism automatically coordinates needle advancement and vacuum generation without external intervention. The operator simply activates the syringe mechanism, which autonomously manages both functions, eliminating the need for external control units and vacuum sources while maintaining reliable operation.
3Productivity
If precise coordination of needle movement and vacuum generation is achieved, then tissue sample removal efficiency is improved, but device complexity increases
Solution Approach 1:
The patent achieves precise coordination of needle movement and vacuum generation by merging both functions into a single syringe-driven mechanism. As the syringe plunger moves, it simultaneously advances the biopsy needle and generates vacuum pressure in the sample chamber. This unified mechanism ensures perfect temporal and spatial coordination between needle positioning and vacuum application, maximizing tissue sample removal efficiency without requiring complex separate control systems.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device allows for precise and efficient tissue sample removal with improved ease of operation, enabling single-handed use and providing high-quality tissue samples for histological examination, while being cost-effective and eliminating the need for external control units or vacuum sources.
Implementation Method 1
elastic force-actuated clamping and shooting mechanism
Implementation Method 2
pressure source connectable to the hollow biopsy needle
Data Source
AI summary
A biopsy device for tissue collection having a housing and a removable element. A power source is contained within the housing and the removable unit includes a biopsy needle module and a pressure source that can be integrated into the housing such that the biopsy device is fully operational without the need for wires or cables extending from the housing to connect to external units. The biopsy needle module includes a biopsy needle and a cutting sleeve, the biopsy needle having a sharpened distal end and a distal opening for collection of tissue, the cutting sleeve having a cutting blade on its distal end and being coaxially positioned with respect to the biopsy needle.