Biopsy Needle Three Emission Modes
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Solution Overview
Problem
Existing fully automatic biopsy needles have limited emission modes and operation manners, making it difficult for users to choose the most suitable mode for different situations during ultrasound-guided biopsy.
Innovation Solution
A biopsy needle with three usage modes is designed, featuring an upper cover, base, inner needle assembly, and outer needle assembly, which include loading and emission assemblies. The needle assemblies are loaded and unloaded using a single loading assembly and various emission assemblies, allowing for fully automatic, delayed fully automatic, and fully automatic zero range modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing fully automatic biopsy needles use a single emission mode, then the device structure is simple, but the adaptability to different biopsy situations is poor
Solution Approach 1:
The biopsy needle employs dynamic emission modes where the inner needle assembly can be emitted independently or together with the outer needle assembly based on clinical needs. The system transitions between different emission states (inner needle only, outer needle only, or both together) through controlled release mechanisms, allowing adaptability to various biopsy scenarios while maintaining a relatively compact structure.
Solution Approach 2:
The needle system is divided into separable components: an outer needle assembly and an inner needle assembly. This segmentation allows independent emission of each assembly through separate release mechanisms (first release button for inner needle, second release button for outer needle), providing multiple emission combinations without significantly increasing overall device complexity.
2Ease of operation
If existing biopsy needles have limited emission modes, then the operation manner is simple, but the ease of operation for different situations is reduced
Solution Approach 1:
The system provides self-service through independently controllable release mechanisms. The operator can selectively emit the inner needle assembly or outer needle assembly based on real-time clinical requirements using corresponding release buttons, without requiring complex external control systems or multiple operators.
3Device complexity
If a single loading assembly is used for both inner and outer needle assemblies, then the device complexity is reduced, but the reliability of sequential loading may be affected
Solution Approach 1:
The loading mechanism incorporates preliminary positioning features that ensure the outer needle assembly is loaded and positioned correctly before the inner needle assembly is loaded. The single loading assembly includes structured engagement surfaces and sequential engagement paths that guide the loading process, ensuring proper sequencing without requiring separate loading devices.
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 biopsy needle provides users with flexible operation options, allowing for convenient selection of emission modes and operation manners based on specific situations, enhancing the efficiency and effectiveness of biopsy procedures.
Implementation Method 1
a first elastic sheet which extends diagonally forward relative to the needle insertion direction at one side in the needle insertion direction in the inner needle holder, and an inner needle loading spring are set between the inner needle holder and the base; and a second elastic sheet which extends diagonally forward relative to the needle insertion direction at one side in the needle insertion direction in the outer needle holder, and an outer needle loading spring are set between the outer needle holder and the base
Data Source
AI summary
The present application relates to a biopsy needle having three usage modes, comprising an upper cover, a base, an inner needle assembly, an outer needle assembly, a loading assembly, a first rear emission assembly, a second rear emission assembly, a first side emission assembly and a second side emission assembly. The outer needle assembly and the inner needle assembly are loaded in sequence by the loading assembly, the inner needle assembly is emitted by the first rear emission assembly or the first side emission assembly, the outer needle assembly is emitted by the second rear emission assembly or the second side emission assembly, and the inner needle assembly can also be emitted by the second rear emission assembly or the second side emission assembly when it is not emitted, so that three usage modes are provided for users, and the users can select a rear emission or side emission operation.