Remote Suction Irrigation Probe with Solenoid Pinch Valve
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Solution Overview
Problem
Current suction/irrigation devices in surgical procedures are limited by manual operation requirements, propensity for obstruction, rigid design, high disposable component costs, and inability to be controlled remotely, especially in robot-assisted surgeries.
Innovation Solution
A flexible suction/irrigation system with a remote control module, solenoid pinch valves, and a flexible distal probe that allows for hands-free operation, minimizes obstruction risks, and reduces disposable components by isolating reusable components from contamination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a rigid laparoscopic suction/irrigation probe is used, then the device structure is stable and easy to control, but the device cannot be remotely controlled and requires manual manipulation by an assistant surgeon
Solution Approach 1:
The device is divided into a control module (proximal end) and a probe (distal end). The control module contains the valve mechanism and can be remotely operated, while the probe is inserted into the surgical field. This segmentation allows the control functions to be separated from the working end, enabling remote operation without requiring the surgeon to manually manipulate the probe in the surgical field.
Solution Approach 2:
A flexible tube connects the control module to the probe, serving as an intermediary that transmits control signals and fluid flow. This intermediary allows the control module to be positioned away from the surgical field while still enabling operation of the suction/irrigation functions at the probe tip.
2Reliability
If a trumpet valve mechanism is used, then the valve can control suction and irrigation functions, but the valve becomes obstructed with particulate materials and creates turbulence
Solution Approach 1:
The valve mechanism is extracted from the flow path and positioned externally. The control module contains the valve, which operates on the flexible tube from the outside, rather than being integrated within the tube lumen. This extraction eliminates the valve's presence in the fluid flow path, preventing obstruction by particulate materials and eliminating turbulence caused by valve edges.
Solution Approach 2:
The traditional mechanical trumpet valve is replaced with a solenoid-actuated valve mechanism that operates externally on the flexible tube. This substitution maintains flow control capability while eliminating the mechanical valve structure that causes obstruction and turbulence within the flow path.
3Device complexity
If the valve mechanism is integrated into the flow stream, then the valve structure is compact, but the valve impedes the ability to manipulate the flow path in instances of obstruction
Solution Approach 1:
The valve mechanism is extracted from the flow stream and positioned externally on the flexible tube. This allows the flow path to remain clear and accessible for manipulation when obstruction occurs, while the valve continues to provide flow control functionality from an external position.
Solution Approach 2:
The flexible tube allows dynamic manipulation of the flow path section between the valve and the probe tip. When obstruction occurs, the tube can be manipulated to clear the blockage, and the valve can be independently actuated to control flow during troubleshooting procedures.
4Ease of operation
If a hand-held suction/irrigation device is used, then the device is simple and easy to operate, but the surgeon cannot control the device hands-free and must use both hands for other surgical maneuvers
Solution Approach 1:
Manual mechanical valve operation is replaced with a solenoid-actuated valve system that can be controlled remotely. This allows the surgeon to operate the suction/irrigation device using foot pedals, buttons, or other remote control mechanisms rather than manual hand manipulation, enabling hands-free control during surgical procedures.
Solution Approach 2:
A control module positioned away from the surgical field serves as an intermediary between the surgeon and the probe. This module receives control signals from the surgeon (via remote controls, foot pedals, etc.) and translates them into valve actuation, enabling hands-free operation without requiring complex direct control mechanisms at the probe tip.
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 remote and hands-free control of suction and irrigation functions, reduces obstruction risks, and minimizes disposable component usage, enhancing surgical flexibility and cost-effectiveness without compromising patient safety.
Implementation Method 1
solenoid pinch valves
Implementation Method 2
solenoid pinch valves
Implementation Method 3
vacuum pump
Implementation Method 4
irrigation pump
Data Source
AI summary
A system for the movement of fluids into and out of a surgical field is provided with a control module manipulated by a user; a valve controlled by the user via the control module, the valve controlling flow of a fluid; and a tube set having a proximal branch and a distal branch, wherein the proximal branch is opened and closed by the valve and at least a portion of the distal branch being flexible and a distal tip of the distal branch configured for manipulation within a surgical field. The valve is disposed at a distance to the surgical field and allows free access to tube by the user. Separate proximal branches for suction, irrigation, and insufflation are provided. One or more distal branches may be provided.