Quick Connect Medical Device Locking Assembly
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Solution Overview
Problem
Conventional quick connect devices for medical tools, such as implant extraction tools, suffer from a loose fit due to lack of rigidity, leading to inefficient transfer of striking force during procedures, requiring more strikes and energy from users.
Innovation Solution
A quick connect device with a housing, slide lock, and locking assembly featuring a substantially annular member, balls, and splines, along with a collar assembly and biasing members, which securely engages and disengages the connection adapter to prevent play and ensure effective force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional quick connect device is used, then the connection can be made quickly, but the connection becomes loose and unstable causing play or wobbling
Solution Approach 1:
The quick connect device employs a dynamic locking mechanism where rotation of the substantially annular member along the longitudinal axis transforms rotational motion into linear movement, causing the locking surfaces to engage progressively and eliminate play dynamically rather than relying on static interference fits
Solution Approach 2:
The invention changes the geometric parameters of the locking surfaces by providing sloped recesses on the substantially annular member that correspond to complementary sloped surfaces on the connection adapter, creating a self-adjusting connection that transitions from a loose state to a rigid locked state through parameter transformation during rotation
2Ease of manufacture
If a loose fit connection is used, then the device is easier to assemble, but the striking force is not effectively conveyed during implant extraction
Solution Approach 1:
The substantially annular member with its curved, sloped recesses creates a camming action during rotation that progressively tightens the connection and establishes rigid force transmission pathways, transforming the connection from a simple insertable fit to a mechanically engaged locked state capable of withstanding high striking forces
3Force
If a rigid connection is implemented, then force transmission is improved, but the device complexity increases
Solution Approach 1:
The invention merges multiple functions into the substantially annular member: it serves as both the locking element and the force transmission component, while the sloped recesses simultaneously provide both the locking geometry and the camming action for engagement, reducing the need for separate locking components and simplifying the overall structure despite the sophisticated locking mechanism
Data Source
AI summary
A quick connect is disclosed for a medical device. The quick connect includes a housing, a slide lock mounted within the housing, and a locking assembly mounted within the housing. The slide lock is for receiving a cooperating connection adapter. The locking assembly includes a substantially annular member having a superiorly facing sloped recess. The substantially annular member is movable along a longitudinal axis of the housing upon rotation of the substantially annular member.