Puncture Needle Assembly With Dissecting Connector
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Solution Overview
Problem
Current surgical methods for treating urinary incontinence, such as incising the vagina to insert a sling, are invasive, risk infection, and pose a heavy burden on patients and operators, with potential damage to the urethra and increased risk of complications.
Innovation Solution
A puncture needle assembly featuring a puncture needle and a connector with a dissecting section that moves opposite to the needle's puncture direction, a connection mechanism, and a rotation restricting mechanism to ensure precise and safe insertion of an elongated implant without incision, maintaining constant positional relation and preventing unintentional rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vagina is incised with a surgical knife to insert the sling, then the sling can be indwelled inside the body, but the patient is exposed to infection risk and the surgical burden is increased
Solution Approach 1:
The patent introduces a puncture needle as an intermediary tool to create a puncture hole through the vaginal wall, replacing the direct incision method. The puncture needle allows the sling to be indwelled through a minimal puncture hole rather than a large incision, significantly reducing infection risk while maintaining surgical effectiveness
Solution Approach 2:
The patent extracts the harmful incision process and replaces it with a puncture method. By removing the need for surgical knife incision and extensive tissue dissection, the procedure reduces exposure to infection and surgical burden while achieving the same therapeutic outcome of sling indwelling
2Reliability
If the vagina is incised with a surgical knife, then the sling can be inserted, but the urethra may be damaged by the surgical knife
Solution Approach 1:
The puncture needle serves as a precise intermediary tool that can be guided to create a puncture hole without directly contacting or damaging the urethra. The needle's sharp tip allows penetration through the vaginal wall at a controlled location, avoiding the urethra while still enabling sling insertion
Solution Approach 2:
The patent segments the surgical procedure into distinct steps: first creating a puncture hole with the puncture needle at a specific location, then inserting the sling through this hole. This segmentation allows precise control over the insertion path, separating the tissue-penetration function from the sling-insertion function to avoid urethra damage
3Reliability
If the vagina is incised with a surgical knife, then the sling can be indwelled, but the operator's fingertip may be injured
Solution Approach 1:
The patent removes the surgical knife from the procedure and replaces it with a puncture needle that can be safely manipulated. The puncture needle's design allows the operator to maintain safe distance and control, eliminating the risk of fingertip injury associated with handling sharp surgical knives for incision
4Manufacturing precision
If the biological tissue is dissected in a width much greater than the width of the sling to ensure proper orientation, then the sling can be indwelled in predetermined orientation, but the burden on the patient is relatively heavy
Solution Approach 1:
The puncture needle is pre-positioned and guided to create a puncture hole at the exact location and orientation needed for sling insertion. This preliminary precise action eliminates the need for extensive preliminary tissue dissection, as the needle itself defines the insertion path and orientation
Solution Approach 2:
The puncture needle acts as a mediator that transfers the orientation requirement from the sling to the puncture hole creation process. By controlling the needle's insertion angle and direction, the desired sling orientation is achieved without needing to dissect a large area of tissue
Data Source
AI summary
A puncture needle assembly is disclosed, which includes a puncture needle adapted to puncture biological tissue; and a connector adapted to connect an elongated body insertable in a living body to a needle tip section of the puncture needle, the connector having a dissecting section adapted to dissect biological tissue by moving in a direction opposite to a direction in which the puncture needle punctures the biological tissue. The puncture needle assembly further includes a connection mechanism capable of connecting the puncture needle and the connector to each other; and a rotation restricting mechanism adapted to restrict rotation about an axis of the connector in relation to the puncture needle.