Laparoscopy Trocar Obturator Valve Actuation
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Solution Overview
Problem
Current laparoscopy trocars lack an efficient mechanism to automatically control the fluid valve during cannula insertion, potentially leading to gas leakage and requiring manual operation, which can be cumbersome and increase procedural complexity.
Innovation Solution
The laparoscopy trocar incorporates an obturator with control means that mechanically actuates the fluid control valve to switch from an open to a closed position when inserted, ensuring the valve remains closed during cannula insertion, utilizing mechanical or electronic means to synchronize the obturator and cannula handle portions for precise fluid management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual operation of the fluid valve is required during cannula insertion, then the surgeon can control gas flow, but the procedural complexity increases and gas leakage may occur
Solution Approach 1:
The fluid control valve is pre-configured in the closed position on the cannula. The obturator's control means automatically actuates the valve to the closed position during insertion, eliminating the need for manual operation and ensuring the abdominal cavity remains sealed throughout the procedure.
2Productivity
If the fluid valve remains open during insertion, then gas can flow freely, but gas leakage occurs and the abdominal cavity cannot be maintained
Solution Approach 1:
The valve is pre-set to the closed position and the obturator's control means ensures it remains closed during insertion, preventing gas leakage automatically without requiring manual intervention or compromising procedural efficiency.
Solution Approach 2:
The obturator's control means automatically actuates the fluid control valve to the closed position during insertion, making the system self-regulating and eliminating the need for manual valve operation by the surgeon.
3Ease of operation
If the obturator is inserted without integrated control means, then the insertion mechanism is simple, but the fluid valve cannot be automatically controlled
Solution Approach 1:
The control means for actuating the fluid control valve is integrated into the obturator, combining the insertion function with the valve control function in a single component, thereby enabling automatic valve control without requiring separate manual operation.
Data Source
Figure 1A~1B
Figure 1C~1E
Figure 1F~1H
AI summary
There is disclosed a laparoscopy trocar, having a cannula and an obturator for use in inserting the cannula into the abdominal cavity of a patient. The cannula comprises a fluid control valve for opening and closing a fluid flow path from outside the bore of the cannula into the bore of the cannula and the obturator comprises a control means configured to cause the fluid control valve to move between its open and closed positions upon insertion of the obturator into the cannula. A novel tip for the obturator is disclosed comprising a concave bladed front edge formed between a pair of concave tip faces.