Multi-Lumen Peritoneal Trocar for Single-Incision Catheter Placement
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Solution Overview
Problem
The use of multiple trocars for catheter placement in peritoneal dialysis increases the risk of infection, peritoneal fluid leakage, and patient discomfort due to multiple insertion sites, necessitating an improved trocar design that reduces the number of insertion points.
Innovation Solution
A multi-lumen trocar with integrated coupling mechanisms allows for multiple surgical tools, including a peritoneal dialysis catheter and endoscope, to be inserted through a single incision, with optional insufflation capabilities using a portable gas container and compliance chamber for controlled pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple trocars are used for catheter placement and surgical tools, then access to peritoneal cavity is improved, but insertion sites increase leading to higher infection risk and patient discomfort
Solution Approach 1:
The patent combines multiple trocars into a single multi-lumen trocar device. The trocar includes a first lumen for catheter placement and a second lumen for surgical tools, allowing multiple functions to be performed through one insertion site rather than multiple separate trocars
Solution Approach 2:
The single trocar device is designed to perform multiple functions: it can accommodate a peritoneal dialysis catheter in the first lumen and simultaneously accommodate surgical tools such as an endoscope or insufflation needle in the second lumen, making it a universal access device
2Adaptability or versatility
If multiple trocars are used for catheter placement, then surgical access is improved, but peritoneal fluid leakage risk increases
Solution Approach 1:
By merging multiple access functions into a single trocar insertion, the patent reduces the number of puncture sites through which peritoneal fluid could leak. The single sealed insertion point with multiple internal lumens is more reliable than multiple separate insertion sites
3Adaptability or versatility
If multiple insertion sites are created, then tool access is improved, but patient discomfort increases
Solution Approach 1:
The patent merges multiple tool access requirements into a single trocar insertion, eliminating the need for multiple separate punctures through the patient's abdominal wall. This significantly reduces patient discomfort during and after the procedure
Solution Approach 2:
The universal trocar design allows different tools (catheter, endoscope, insufflation needle) to access the peritoneal cavity through one common pathway, making the procedure less invasive and more comfortable for the patient
4Object-affected harmful factors
If single trocar with multiple lumens is used, then insertion sites are reduced, but device complexity increases
Solution Approach 1:
The trocar is segmented into distinct lumens (first lumen and second lumen) that are separated by internal walls, allowing independent access paths for different tools while maintaining a unified external structure. This segmentation enables functional separation without requiring multiple external insertion sites
Data Source
AI summary
A trocar for peritoneal dialysis is disclosed herein. An example trocar includes a conduit having two parallel lumens and a head connected to a first end of the conduit. The head includes two parallel lumens that are aligned respectively with the two parallel lumens of the conduit. The trocar also includes a coupler connected to the head. The coupler includes two (or more) parallel lumens that are aligned respectively with the two parallel lumens of the head. The coupler includes a coupling mechanism for securing surgical tools in place after insertion into a patient. The trocar may also include an obturator having a shaft that is removably inserted through the coupler, the head, and the conduit to protrude from a second end of the conduit.