Interlocking Two-Part Sewing Needle for Secure Graft Preparation
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Solution Overview
Problem
Conventional graft preparation processes in ligament replacement surgeries lack a secure connection mechanism for the two-part needle, leading to potential detachment during surgical procedures.
Innovation Solution
An interlocking two-part sewing needle with a first needle portion and a second needle portion that are removably connected via a needle receiver with non-resistance and resistance sections, providing friction and compressive forces to secure the connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a two-part needle is used in ligament replacement surgery, then the needle can be assembled from separate portions for ease of handling and storage, but the connection between the two needle portions may be insecure and prone to detachment during surgical procedures
Solution Approach 1:
The second needle portion is inserted into and nested within the first needle portion, forming an interlocking configuration where the portions are contained within each other's structures, providing both ease of assembly and secure connection
Solution Approach 2:
The needle is divided into two separate portions that can be assembled and disassembled, allowing for ease of handling and storage while maintaining connection security through the interlocking mechanism
2Reliability
If a secure connection mechanism is added to the two-part needle, then the reliability of the needle connection is improved, but the device complexity increases
Solution Approach 1:
The connection mechanism is merged with the needle portions themselves, using the needle's own structure to provide the interlocking and securing function, rather than adding separate components, thus improving reliability without significantly increasing complexity
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 interlocking mechanism ensures a stable and reliable connection between the needle portions, facilitating efficient and secure suturing, reducing time and cost in surgical procedures.
Implementation Method 1
Each non-resistance section is configured to exert only a friction force on the second needle portion when the second needle portion is inserted into the needle receiver
Implementation Method 2
Each resistance section is configured to exert a compressive force on the second needle portion when the second needle portion is inserted into the needle receiver
Data Source
AI summary
An interlocking two-part sewing needle includes a first needle portion having a needle tip and a second needle portion configured to be inserted into the first needle portion for removably connecting the first needle portion and the second needle portion together. A needle receiver is formed in the first needle portion and is configured to receive the second needle portion when the second needle portion is inserted into the first needle portion. The needle receiver includes one or more non-resistance sections. Each non-resistance section is configured to exert only a friction force on the second needle portion when the second needle portion is inserted into the needle receiver. Additionally, the needle receiver includes one or more resistance sections. Each resistance section is configured to exert a compressive force on the second needle portion when the second needle portion is inserted into the needle receiver.