Surgical Handle Quick Connect Assembly with Camming Lock
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Solution Overview
Problem
Existing surgical devices with powered handle assemblies often require linear or rotary motion to operate, making it difficult to interface with end effectors designed for linear driving forces, necessitating adapters for compatibility, and there is a need for quick-connect/disconnect mechanisms to facilitate efficient connection and disconnection of surgical accessories.
Innovation Solution
A hand-held electromechanical surgical device with a cylindrical coupling assembly and a connecting portion featuring a collar and socket members that allow for selective connection and disconnection of surgical accessories, utilizing a camming mechanism to secure the accessory when connected and enable easy detachment, allowing for compatibility with both linear and rotary driven surgical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a quick-connect mechanism is implemented, then connection and disconnection speed is improved, but connection reliability may worsen
Solution Approach 1:
The connection mechanism is divided into multiple independent locking elements (at least two locking elements distributed around the coupling interface) that work simultaneously to secure the connection. This segmentation allows the system to achieve both quick connection through parallel engagement and high reliability through redundant locking points.
Solution Approach 2:
The coupling interface includes pre-positioned locking elements and corresponding engagement features that are prepared in advance. When the accessory is inserted, the locking elements automatically engage in a predetermined sequence and position, ensuring reliable connection without requiring additional adjustment or verification steps.
2Reliability
If multiple locking elements are used, then connection reliability is improved, but device complexity increases
Solution Approach 1:
Multiple locking elements are merged into a single integrated collar component that moves as one unit. The collar incorporates all locking elements, positioning features, and actuation mechanisms in one piece, reducing the number of separate parts while maintaining the reliability benefits of multiple locking points.
Solution Approach 2:
The collar serves multiple functions simultaneously: it positions the locking elements, provides the actuation interface for the user, distributes locking forces around the coupling interface, and maintains alignment during connection. This multi-functionality reduces overall device complexity by eliminating the need for separate components for each function.
3Reliability
If a collar mechanism with locking elements is used, then connection reliability is improved, but ease of operation may worsen
Solution Approach 1:
The locking elements are designed to automatically engage and lock when the accessory is inserted into the coupling interface. The user simply needs to insert the accessory and actuate the collar; the locking elements self-align and self-engage without requiring manual adjustment or complex manipulation, maintaining ease of operation while ensuring reliable connection.
Data Source
AI summary
A hand-held electromechanical surgical device is provided and configured to selectively connect with a surgical accessory. The surgical device includes a device housing defining a connecting portion for selectively receiving a coupling assembly of the surgical accessory. The connecting portion includes an annular wall defining a cylindrical recess dimensioned to receive the coupling assembly of the surgical accessory; a collar slidably supported about the annular wall, wherein the collar is slidable between a first position and a second position; and at least one socket member interposed between the annular wall and the collar, wherein each socket member is slidably supported in the annular wall. Each socket member includes a first fixed state wherein each socket member projects into the cylindrical recess of the annular wall; and a second movable state wherein each socket member is free to not project into the cylindrical recess of the annular wall.