Integrated Bone Marrow Aspiration and Biopsy Needle
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Solution Overview
Problem
Conventional bone marrow aspiration and biopsy procedures require separate needles and multiple punctures, causing patient trauma and increased procedural complexity.
Innovation Solution
A single device with a needle and guide mechanism allows for simultaneous bone marrow aspiration and biopsy in a two-step procedure, reducing the need for multiple punctures and simplifying the process by using a handle and lever system to manage the guide's position and create a vacuum for sample extraction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate needles are used for bone marrow aspiration and bone biopsy, then each procedure can be performed with specialized equipment, but the patient must undergo multiple punctures and the procedure becomes more complex
Solution Approach 1:
The patent combines two separate needles (bone marrow aspiration needle and bone biopsy needle) into a single integrated needle assembly. The aspiration needle and biopsy needle are positioned concentrically within the same handle and guiding mechanism, allowing both procedures to be performed through a single puncture site. This merging eliminates the need for separate punctures while maintaining the specialized functions of each needle type.
Solution Approach 2:
The single needle assembly is designed to perform multiple functions: it can aspirate bone marrow liquid through the aspiration needle, obtain solid bone biopsy samples through the biopsy needle, and both functions are accessible through the same puncture site. The device serves as a universal tool that replaces two separate specialized needles, reducing procedural complexity while maintaining sample quality.
2Object-affected harmful factors
If a single needle is used for both aspiration and biopsy, then patient trauma is reduced, but the device design becomes more complex
Solution Approach 1:
The aspiration needle is positioned inside the biopsy needle, creating a nested configuration. Both needles share the same outer sheath and guiding mechanism, with the aspiration needle contained within the larger biopsy needle structure. This nesting allows both functions to be accessed through a single puncture while organizing the complexity within a compact, integrated design.
Solution Approach 2:
The single needle assembly is segmented into distinct functional components (aspiration needle, biopsy needle, shared sheath, guiding mechanism) that can be independently controlled. Each component maintains its specialized function while being part of the integrated system, allowing the device to reduce patient trauma through single-puncture access while managing design complexity through modular segmentation.
3Manufacturing precision
If conventional separate procedures are used, then each procedure can be optimized independently, but the overall procedure time increases
Solution Approach 1:
The integrated needle assembly allows the practitioner to perform aspiration and biopsy procedures in continuous sequence through the same puncture site without withdrawing the device. The guiding mechanism and handle design enable smooth transition between functions, maintaining continuous useful action and eliminating the time loss associated with removing and reinserting separate needles.
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 enables efficient and less painful single-procedure extraction of both liquid bone marrow and solid bone samples, reducing trauma to the patient and simplifying the procedure for the practitioner while maintaining optimal sample conditions for analysis.
Implementation Method 1
a mechanism for the movement of the guide (18) which allows, when the guide is in the first position, to take a liquid sample of bone marrow by aspiration and, when the guide is in the second position, to take a solid sample of bone by biopsy
Data Source
AI summary
The invention relates to a device for taking a liquid bone marrow sample (aspiration) and a solid bone sample (biopsy) in the same procedure, which can thus replace specialized needles for taking bone marrow and needles exclusively used for taking bone biopsies. The device for taking liquid bone marrow samples and a solid bone sample has a simple mechanism that uses two grooved clamps, it is easy to disassemble for sterilization and its handle is designed to perform the puncture easily. The needle of the device is hollow, and within it a guide is placed with two sections of different diameters. The guide makes it possible to open up the empty needle channel to allow the bone marrow liquid to flow and be extracted, and also to close the channel to be able to penetrate the tissue. The purpose of this invention is to combine the procedures of bone marrow aspiration and bone biopsy, thus reducing the patient's discomfort and the time needed for the procedure.