One-Piece Stent Implanter for Gallbladder Drainage
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Solution Overview
Problem
Current stent implantation methods require multiple instruments and procedures for dilation and reconstruction, leading to organ shrinkage, potential contamination, and increased risk of complications like abdominal infection, especially when attempting to implant a drainage device into a gallbladder.
Innovation Solution
A one-piece stent implanter with a front handle and rear handle, featuring a cautery tip, stainless steel pipe, and insulating coating, allowing for one-step dilation, reconstruction, and stent placement with real-time electro-therapy and imaging guidance, enabling direct stent implantation and continuous drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple instruments and procedures are used for dilation and reconstruction, then the stent can be implanted, but organ shrinkage occurs and contamination risk increases
Solution Approach 1:
The patent combines multiple functions (puncture, dilation, reconstruction, and stent implantation) into a single integrated implanter device. The implanter includes a puncture needle for creating an opening, a dilation balloon for expanding the channel, and a stent delivery mechanism, all integrated into one device that can be deployed sequentially without removing the device from the body, thereby preventing organ shrinkage and contamination.
Solution Approach 2:
The implanter device performs preliminary actions by first creating a puncture opening, then dilating the channel, and preparing the reconstruction pathway before stent implantation. These preparatory steps are completed while the device remains in place, ensuring the organ maintains its position and the pathway remains open for subsequent stent deployment.
2Reliability
If multiple instruments are used for dilation and reconstruction, then stent placement is achieved, but the number of procedures and instruments increases
Solution Approach 1:
The patent integrates multiple previously separate instruments (puncture needle, dilation catheter, stent delivery system) into a single multi-functional implanter device. The device features a reusable outer catheter and a disposable inner assembly that contains all necessary components for puncture, dilation, and stent implantation, reducing the number of separate procedures and instruments needed.
Solution Approach 2:
The implanter device is designed as a universal platform that can perform multiple functions: puncturing the organ wall, dilating the channel, reconstructing the pathway, and implanting the stent. The reusable outer catheter can be used across multiple procedures while the disposable inner assembly provides the specific functionality needed for each intervention.
3Productivity
If appliances are retreated out for drainage, then the procedure is complete, but rapid organ shrinkage occurs leading to difficulty in follow-up operations
Solution Approach 1:
The implanter device performs all necessary preparatory actions (puncture, dilation, pathway reconstruction) before stent implantation while remaining in place. This ensures the organ and pathway maintain their position throughout the procedure, making follow-up operations easier as the anatomical landmarks remain unchanged.
Solution Approach 2:
By combining all procedures into a single continuous operation without removing the device, the patent prevents organ shrinkage that would occur with sequential procedures. The stent is implanted immediately after pathway preparation, maintaining continuous support and preventing the organ from shrinking or changing position.
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
Facilitates comprehensive surgeries by reducing intraoperative pain and complications, enabling direct stent implantation and continuous drainage, while minimizing the need for multiple instruments and procedures.
Implementation Method 1
the rear handle is provided with a conductive socket which is electrically connected with the inner pipe made from metal conductive materials, and the cautery tip is also made from metal conductive materials
Implementation Method 2
real-time electro-therapy can be applied to incision positions by using the cautery tip
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A one-piece stent implanter, comprises a front handle (10) and a rear handle (14), wherein the front end of the front handle (10) is provided with an outer pipe (7) whose top is flexibly connected with a cautery tip (1), the outer pipe is internally provided with a middle pipe (6) for receiving a stent (4); the rear handle (14) comprises a stainless steel pipe (12) for supporting an inner pipe (3) positioned in the stainless steel pipe, the top of the inner pipe (3) being fixedly connected to the cautery tip (1); wherein one end of the middle pipe (6) is adapted to touch and connect with one end of the stent (4), while the other end of the middle pipe is mutually connected with the stainless steel pipe (12); allowing one end of the stent to be positioned close to the cautery tip, with a certain gap; such that when the front handle (10) is retreated along the stainless steel pipe (12), the outer pipe (7) simultaneously retreats and separates from the cautery tip (1), the positions of the middle pipe and the rear handle remaining unchanged, whereby the stent (4) is automatically released.