Puncture Apparatus with Movable Second Needle for Minimally Invasive Sling Indwelling
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Solution Overview
Problem
Current surgical treatments for urinary incontinence, such as the use of a sling implant, involve invasive procedures that can lead to complications like infection and damage to the urethra or vaginal wall, and require incisions that increase the burden on patients and operators.
Innovation Solution
A puncture apparatus with a first and second needle tip, where the second needle is movable relative to the first, allowing for the formation of a puncture hole between the urethra and vagina without the need for extensive incisions, using a traction wire or pushing member to facilitate the procedure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a surgical knife is used to incise the vagina wall, then the sling can be indwelled inside the body, but the invasiveness of the procedure increases and the risk of infection and complications occurs
Solution Approach 1:
The patent extracts the cutting function from the puncture apparatus by using a pre-dissected tunnel space. The surgical knife is used only once to create the initial tunnel, and then the puncture needle is passed through this pre-prepared space without cutting the vaginal wall, thereby eliminating the harmful effects of repeated incisions while maintaining the ability to indwell the sling
Solution Approach 2:
The patent introduces a pre-dissected tunnel space as an intermediary between the external puncture point and the internal implantation site. This tunnel, created by dissection rather than continuous cutting, serves as a safe pathway that eliminates the need for the surgical knife to repeatedly incise the vaginal wall during the puncture process
2Ease of operation
If the vagina wall is incised to form a puncture hole, then the sling can be indwelled, but the wound may expose the sling to the inside of the vagina causing complications
Solution Approach 1:
The patent extracts the harmful cutting action from the puncture process. Instead of using the surgical knife to create the puncture hole through incision, the needle is passed through a pre-dissected tunnel that has already been created. This eliminates the creation of fresh wounds that could expose the sling to vaginal bacteria while still allowing the sling to be indwelled through the same tunnel
3Ease of manufacture
If a surgical knife is used for the procedure, then the puncture hole can be formed, but the operator risks damaging his/her fingertip
Solution Approach 1:
The patent removes the surgical knife from the puncture operation itself, using it only for the initial tunnel dissection. The puncture needle, which has a protected shaft and controlled movement mechanism, replaces the knife for the actual puncture and sling indwelling process, eliminating the risk of fingertip injury from knife handling during the critical puncture phase
Data Source
AI summary
A puncture apparatus is disclosed, which can include a first puncture needle having a first needle tip and configured to puncture a living body tissue, a shaft interlocked to the first puncture needle, a second puncture needle having a second needle tip and configured to puncture a living body tissue, the second needle tip being oriented in a direction different from a direction in which the first needle tip is oriented, the second puncture needle being disposed so as to be movable relative to the first puncture needle in a proximal direction of the first puncture needle, and a moving section moving the second puncture needle relative to the first puncture needle in the proximal direction of the first puncture needle.