Rotational Biopsy Tool with Spring-Biased Cutting Wire
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Solution Overview
Problem
Current biopsy tools for removing tissue samples are often time-consuming and costly, requiring multiple instruments and assistance from multiple healthcare professionals, which can lead to increased pain and discomfort for patients and potential diagnostic errors due to non-representative samples.
Innovation Solution
A biopsy tool configured to alter between an incision state and a severing state, comprising an elongated outer tubular member with a cutting edge, an inner tubular member, and a spring-biased cutting wire. The tool allows for incising and severing of tissue samples using a rotational movement, eliminating the need for additional tools like forceps or scalpels, and can be operated by a single person with one hand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional biopsy tools are used, then tissue sampling can be performed, but the procedure is time-consuming and requires multiple instruments and healthcare professionals
Solution Approach 1:
The patent combines multiple functions (incision, severing, and tissue sample containment) into a single integrated biopsy tool. The outer tubular member serves as both the incision instrument and the container for the tissue sample, while the inner tubular member with cutting wire provides the severing function. This merging eliminates the need for separate instruments like scalpels and forceps, directly resolving the contradiction between procedural efficiency and device complexity.
Solution Approach 2:
The biopsy tool is designed with multi-functionality where the outer tubular member performs both incision and sample containment functions, and the inner tubular member provides both support and severing capabilities. This universal design allows a single device to replace multiple specialized instruments, improving productivity while reducing the overall complexity of the toolset required for the procedure.
2Productivity
If traditional biopsy tools are used, then tissue sampling can be performed, but multiple healthcare professionals and assistance are required
Solution Approach 1:
By merging the incision and severing functions into a single integrated tool operated by one person, the procedure becomes more operationally simple. The outer tubular member with cutting edge performs incision while the inner tubular member with cutting wire performs severing, all under the control of a single operator, eliminating the need for multiple healthcare professionals to coordinate different instruments.
Solution Approach 2:
The biopsy tool is designed to be self-sufficient, with the cutting wire automatically advancing through the tissue sample base and the outer tubular member containing the sample without requiring external assistance. This self-service capability allows a single healthcare professional to perform the entire procedure independently, improving both productivity and ease of operation.
3Productivity
If traditional biopsy tools are used, then tissue sampling can be performed, but patient pain and discomfort increase
Solution Approach 1:
The biopsy tool maintains continuous useful action by keeping the cutting wire engaged with the tissue sample base throughout the rotation, ensuring seamless incision and severing without interruption. This continuous action reduces the total procedure time and minimizes patient exposure to pain and discomfort compared to traditional methods that require multiple discrete steps and instrument changes.
Solution Approach 2:
The rotational mechanism allows the cutting wire to rapidly sever the tissue sample base in a single rotational motion, skipping the time-consuming steps of traditional cutting methods. This rushing through of the severing process reduces the duration of tissue manipulation and associated pain, while the outer tubular member simultaneously contains the sample without requiring additional operative steps.
4Reliability
If traditional biopsy tools are used, then tissue sampling can be performed, but representative samples may not be obtained
Solution Approach 1:
The continuous rotational action of the cutting wire through the tissue sample base ensures complete and representative sampling. The uninterrupted severing motion removes the entire base of the tissue sample, ensuring all relevant tissue is captured, thereby improving sample representativeness without the time losses associated with traditional multi-step removal methods.
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 tool enables efficient and cost-effective removal of tissue samples with reduced procedural time and human resource requirements, minimizing patient discomfort and improving the quality and representativeness of the tissue samples obtained.
Implementation Method 1
a cutting wire (40), wherein the cutting wire (40) is spring biased and is configured to be arranged in association with the first aperture (25) of the outer tubular member (20)
Data Source
AI summary
The invention relates to a biopsy tool (10) for removing a tissue sample. The biopsy tool (10) is configured to be altered between an incision state and a severing state. The biopsy tool (10) comprises: an elongated outer tubular member (20) wherein a distal end (22) of the outer tubular member (20) comprises a cutting edge (24); an elongated inner tubular member (30) arranged inside the outer tubular member (20); and a cutting wire (40). The outer and inner tubular members (20, 30) are rotatable in relation to each other around a rotational axis (R). The outer tubular member (20) comprises a first aperture (25) and the inner tubular member (30) comprises a second aperture (35). The cutting wire (40) is spring biased and configured to be arranged in association with the first aperture (25) of the outer tubular member (20). The biopsy tool (10) is configured to obtain the severing state by rotational movement of the outer tubular member (20) and/or the inner tubular member (30), so that the first aperture (25) and the second aperture (35) overlap, whereby the cutting wire (40) is displaced perpendicularly to the rotational axis (R). The invention also relates to a method for removing a tissue sample by using a biopsy tool (10).