Surgical Adapter Rotary-to-Linear Motion Conversion
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Solution Overview
Problem
Existing surgical devices with linear drive mechanisms are not compatible with those using rotary motion, limiting their application in procedures requiring end-to-end or transverse anastomosis, as they cannot interface effectively with rotary-driven surgical devices and handle assemblies.
Innovation Solution
The development of an electromechanical surgical system with an adapter assembly that includes a drive converter assembly to convert rotary motion from surgical devices into axial translation for end effectors, enabling compatibility and functionality in procedures requiring linear or articulating motions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If surgical devices use rotary motion drive mechanisms, then device complexity is reduced and ease of operation is improved, but compatibility with linear-driven end effectors deteriorates
Solution Approach 1:
The patent employs an adapter assembly as an intermediary component that interfaces between the rotary-driven surgical device and the linear-driven end effector. The adapter includes a rotary-to-linear converter mechanism that receives rotary motion from the surgical device's drive shaft and converts it to linear motion to actuate the end effector's firing mechanism, thereby enabling compatibility without modifying the original rotary drive system or the linear end effector
2Adaptability or versatility
If surgical devices use linear drive mechanisms, then compatibility with traditional end effectors is maintained, but device complexity increases and ease of operation deteriorates
Solution Approach 1:
The system is segmented into three independent components: the rotary-driven surgical device (handle assembly), the adapter assembly with conversion mechanism, and the linear-driven end effector. This segmentation allows each component to maintain its original design simplicity while the adapter handles the motion conversion complexity, preventing the need to redesign the entire surgical device or end effector
3Adaptability or versatility
If adapters are introduced to enable compatibility between rotary and linear systems, then adaptability is improved, but device complexity increases
Solution Approach 1:
The adapter assembly is designed as a universal interface that can accommodate different end effectors while working with a specific rotary-driven surgical device. The adapter's rotary-to-linear conversion mechanism provides multi-functional capability, enabling the surgical device to operate with various linear-driven end effectors (such as staplers, cutters, or clamps) through a single standardized interface
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 adapter assembly allows for seamless integration of linear and rotary-driven surgical devices, enhancing the versatility and effectiveness of surgical procedures by enabling the use of end effectors in various anastomosis procedures, such as end-to-end and transverse anastomosis, through efficient conversion of motion types.
Implementation Method 1
a drive converter assembly for interconnecting a rotatable drive shaft of the surgical device and an axially translatable drive member of the end effector, wherein the drive converter assembly converts and transmits a rotation of the rotatable drive shaft of the surgical device to an axial translation of the axially translatable drive member of the end effector
Data Source
AI summary
An adapter assembly selectively interconnects a surgical end effector that is configured to perform at least a pair of functions and a surgical device that is configured to actuate the end effector. The end effector includes a first axially translatable drive member and a second axially translatable drive member. The surgical device includes a first rotatable drive shaft and a second rotatable drive shaft.