Modular Surgical Handle With Interchangeable Shaft Assemblies
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Solution Overview
Problem
Current surgical instruments lack versatility and efficiency in performing various surgical tasks due to limitations in handle arrangements, motor control systems, and end effector mechanisms, which hinder precise tissue manipulation and articulation within the body.
Innovation Solution
A surgical instrument system featuring a modular design with a handle and shaft assemblies that include a drive module with a motor and gear reduction system, allowing for articulation and rotation of end effectors, and a control system that manages power and motor operations to facilitate different surgical functions like grasping, dissecting, and suturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If surgical instruments are designed with limited articulation and rotation capabilities, then the device complexity is reduced, but the versatility and precision in performing various surgical tasks deteriorates
Solution Approach 1:
The surgical instrument is divided into modular components including a handle assembly, shaft assembly, and end effector assembly that can be selectively attached and detached. Each module performs specific functions independently, allowing the system to achieve high versatility through component combination rather than complex integrated mechanisms.
Solution Approach 2:
The handle assembly is designed with a universal interface that can accommodate multiple types of shaft assemblies and end effectors. The drive module with motor and gear reduction system provides multi-functional actuation capabilities, enabling a single handle to control various surgical instruments for different tasks including grasping, cutting, and stapling.
2Measurement precision
If a drive module with motor and gear reduction system is implemented, then the precision control of end effector movements is improved, but the device complexity increases
Solution Approach 1:
The patent replaces traditional complex mechanical transmission systems with an electric motor and gear reduction system. The motor provides precise rotational control, while the gear reduction mechanism translates this rotation into controlled linear or angular movements of the end effector, achieving high precision with a more compact and controllable design.
Solution Approach 2:
The drive module incorporates a motor that can dynamically adjust its output based on control signals, allowing for variable speed and torque delivery. The gear reduction system provides mechanical advantage that can be optimized for different operational phases, enabling precise control throughout the range of motion while maintaining adaptability to different surgical tasks.
3Duration of action of moving object
If modular power sources are used for extended use, then the duration of action is improved, but the device complexity and power management requirements increase
Solution Approach 1:
The power system is segmented into modular power sources that can be independently attached to the handle assembly. These removable battery packs or power modules can be exchanged when depleted, extending the overall operational duration without requiring a complex rechargeable or regenerative power management system integrated into the main instrument.
Solution Approach 2:
The modular power sources are designed to be easily attached and detached by the user without requiring complex power management interfaces. The system automatically detects and utilizes the connected power source, and may include indicators for power status and remaining capacity, allowing the instrument to serve itself in power management rather than requiring elaborate user intervention or system complexity.
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 system enables precise and efficient manipulation of tissues through versatile end effector movements, improving surgical precision and reducing the need for frequent instrument changes, thereby enhancing surgical procedures.
Implementation Method 1
a drive module with a motor and gear reduction system
Implementation Method 2
gear reduction system
Data Source
AI summary
A surgical instrument system comprising a first motor, a second motor, and a third motor is disclosed. The surgical instrument system comprises a first handle comprising a first number of controls, a second handle comprising a second number of controls, and a shaft assembly. The shaft assembly is attachable to the first handle in a first orientation in order to engage one of the motors. The shaft assembly is attachable to the second handle in a second orientation to engage a different motor. The surgical instrument system is configured to perform a different function of an end effector in the first orientation and the second orientation.