Surgical Stapler Synchronized Drive for Precise Tissue Sequencing
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Solution Overview
Problem
Current surgical stapling instruments lack efficient mechanisms for synchronizing multiple drive systems to perform complex tissue manipulation and stapling tasks, particularly in minimally invasive procedures, leading to reduced precision and increased procedural time.
Innovation Solution
A surgical stapling instrument with a handle housing multiple electric motors and a synchronized drive system that includes an articulation joint, tissue drive system, and staple firing mechanism, allowing for coordinated movement and stapling along a defined staple firing path, enabled by a rotatable bayonet interconnection and cam mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple drive systems are used for complex tissue manipulation and stapling tasks, then the functionality and versatility of the surgical instrument is improved, but the synchronization precision and coordination between drive systems deteriorate
Solution Approach 1:
The patent combines multiple drive systems (tissue drive system with first and second motors, and staple firing system with third motor) into a single integrated surgical instrument with unified control. The synchronized drive system merges these separate motor-driven subsystems through common control circuitry and coordinated actuation, enabling complex tissue manipulation and stapling functions while maintaining precise synchronization between all drive components.
2Ease of operation
If multiple drive systems with independent control are implemented, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The surgical instrument implements a universal control architecture where a single handle assembly with multiple motors (first motor for tissue drive, second motor for tissue drive, third motor for staple firing) can perform multiple functions including tissue grasping, tissue advancement, and staple deployment. The synchronized drive system provides multi-functionality through coordinated operation of these motors, allowing independent control of each function while managing overall system complexity through integrated design.
3Productivity
If synchronized drive systems with multiple motors are used, then the productivity and procedural efficiency are improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The patent segments the surgical instrument into distinct functional modules: handle assembly with first and second motors for tissue manipulation, third motor for staple firing, tissue drive system with drive shaft and drive cam, and staple firing system with staple cartridge and anvil. This segmentation allows independent manufacturing and assembly of each module, facilitating production of the complex synchronized drive system while maintaining procedural efficiency through coordinated operation of all segments.
Data Source
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AI summary
A surgical instrument for treating the tissue of a patient is disclosed. The surgical instrument comprises a handle, a shaft extending from the handle, and an end effector. The surgical instrument further comprises a motorized drive system, a first drive system configured to perform a first end effector drive motion, wherein the first drive system is operably coupled to the motorized drive system, and a second drive system configured to perform a second end effector drive motion, wherein the second drive system is operably coupled to the motorized drive system. The surgical instrument further comprises synchronizing means for repetitively sequencing the first end effector drive motion and the second end effector drive motion.