Peritoneal-Bladder Catheter for Ascites Drainage
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Solution Overview
Problem
Current methods for managing ascites, such as repetitive punctures and external catheter drainage, are painful, inconvenient, and prone to complications like infection and intestinal perforation.
Innovation Solution
A peritoneal cavity-bladder connecting catheter that allows ascites to be discharged into the urine through the bladder via a single procedure, using a catheter with a peritoneal cavity position part and a bladder position part, along with a balloon support and backflow prevention mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If repetitive ascites punctures are performed, then ascites can be drained, but the patient experiences pain and discomfort
Solution Approach 1:
The catheter is divided into multiple functional segments: a peritoneal cavity position part with inlets, a bladder position part with outlets, and a balloon support part. This segmentation allows the device to perform drainage continuously without repeated punctures, eliminating pain while maintaining effectiveness
Solution Approach 2:
The bladder serves as an intermediary organ between the peritoneal cavity and the external environment. Ascites flows from the peritoneal cavity through the catheter into the bladder, and is then expelled naturally with urine, avoiding direct external puncture and reducing patient discomfort
2Duration of action of moving object
If external catheter drainage is used, then ascites can be drained continuously, but the patient is limited in movement and feels discomfort
Solution Approach 1:
The catheter system merges the drainage function with the bladder's natural expulsive function. The catheter remains internally positioned within the bladder rather than externally, allowing patients to move freely while maintaining continuous drainage capability through the integrated system
Solution Approach 2:
The bladder serves itself as the drainage reservoir and expulsive mechanism. Once ascites enters the bladder through the catheter, the bladder's natural physiological functions handle the remainder of the drainage process, eliminating the need for external drainage bags or pumps that would restrict movement
3Duration of action of moving object
If external catheter drainage is used, then ascites can be drained, but the risk of infection increases over time
Solution Approach 1:
The bladder acts as a sterile intermediary that protects the drainage system. By routing ascites through the bladder rather than directly to the external environment, the system maintains a closed, sterile pathway that reduces infection risk during prolonged drainage
Solution Approach 2:
The bladder provides a biologically inert, sterile environment for temporary ascites storage. This controlled internal environment protects the ascites from external contamination sources, maintaining lower infection risk compared to external drainage systems that are exposed to the external environment
4Reliability
If repetitive punctures are performed, then ascites can be drained, but complications such as intestinal perforation and infection occur
Solution Approach 1:
The catheter is pre-positioned with the peritoneal cavity position part already configured with inlets and the film structure ready to surround the inner space. This preliminary preparation allows for safe, single-insertion placement that avoids repeated puncture attempts and reduces the risk of complications
Solution Approach 2:
The catheter structure itself serves as an intermediary barrier that guides ascites flow through a controlled pathway from the peritoneal cavity to the bladder, preventing direct contact with external contaminants and reducing infection risk
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
Enables effective and repeated ascites drainage without the need for multiple procedures, reducing discomfort and the risk of complications, while allowing for normal movement and daily activities.
Implementation Method 1
a balloon support part swollen when the peritoneal cavity position part is positioned on the side of a peritoneal cavity and the bladder position part is positioned on the side of the bladder, to firmly support the peritoneal cavity position part and the bladder position part onto the bladder wall
Data Source
AI summary
The present disclosure relates to a peritoneal cavity-bladder connecting catheter for ascites drainage. The peritoneal cavity-bladder connecting catheter for ascites drainage includes a peritoneal cavity position part positioned on the side of a peritoneal cavity by passing through a bladder wall located between the peritoneal cavity and a bladder, the peritoneal cavity position part having inlets through which ascites flow into an inner space and being formed as a film that surrounds the inner space, and a bladder position part integrally formed with the peritoneal cavity position part and positioned on the side of the bladder located on the side of the bladder wall opposite to the peritoneal cavity, the bladder position part having outlets through ascites flowed into the peritoneal cavity position part are discharged to outside, and being configured to form a closed inner space together with the peritoneal cavity position part.