Surgical Hand Piece Assembly with External Power Cable
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Solution Overview
Problem
Existing hand pieces for disposable flushing nozzle units in surgical cleansing and irrigation systems face challenges with bulky pneumatic hoses that hinder handling and limited cleansing power, particularly in disposable models with internal batteries that require frequent replacement.
Innovation Solution
A hand piece assembly with a plug-in connection for an external electric power pack and a control unit that allows adjustable power stages and operating modes, eliminating the need for a pneumatic hose and providing high cleansing power through a flexible connecting cable, enabling easier handling and increased irrigation control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a pneumatic motor is used in the hand piece, then high cleansing power is achieved, but the bulky pneumatic hose hinders easy handling
Solution Approach 1:
The patent replaces the pneumatic motor system with an electric motor system. The electric motor is housed in the hand piece and powered by an internal battery, eliminating the need for a bulky pneumatic hose while maintaining high cleansing power. This substitution of mechanical (pneumatic) system with electrical system resolves the contradiction between power and handling.
Solution Approach 2:
The patent extracts the power source (battery) and motor housing into the hand piece itself, separating the power generation function from the external pneumatic supply system. This extraction eliminates the bulky pneumatic hose from the system while preserving the high power output needed for effective wound cleansing.
2Ease of operation
If disposable hand pieces with internal batteries are used, then ease of handling is improved, but the batteries require frequent replacement after 3-5 minutes
Solution Approach 1:
The patent changes the energy storage parameter by using a rechargeable battery system instead of disposable batteries. The battery can be recharged multiple times, significantly extending the operational duration beyond the 3-5 minute limitation of disposable batteries. This parameter change in energy storage capacity resolves the contradiction between ease of handling and duration of operation.
3Power
If pneumatically operated hand pieces are used, then high power is achieved, but the cleansing power cannot be individually adapted to surgical requirements
Solution Approach 1:
The patent implements dynamic control of the electric motor through a trigger mechanism that allows adjustable power output. The trigger can be pressed to different degrees, dynamically adjusting the motor power from low to high settings. This dynamic adjustability enables adaptation to different surgical requirements while maintaining the high power capability of the system.
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
The solution enhances handling and cleansing power by allowing adjustable power stages and continuous operation without the need for a pneumatic hose, providing a more efficient and effective irrigation system for surgical procedures.
Implementation Method 1
an electric motor (4) interacting with the drive mechanism is provided in the housing (2)
Implementation Method 2
the drive mechanism provided in the hand piece generates a pulsing motion in the area of the connection of the base body, which deflects the pump membrane extending into that area with a pre-defined frequency and therefore causes a pulsation of the pump membrane
Data Source
AI summary
The invention relates to a hand piece for a disposable flushing nozzle unit for cleansing and/or irrigating surgical wounds, comprising a housing with one first connecting unit for holding the disposable flushing nozzle unit, a drive mechanism and an electric motor interacting with said drive mechanism. In an especially advantageous embodiment the hand piece comprises a second connecting unit for connecting an external electric power supply.