Self-Locking Tourniquet With Ratcheted Tightening for Hemostasis
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Solution Overview
Problem
Existing tourniquets require significant pulling force to achieve further tightening beyond a certain level, leading to suboptimal hemostatic performance due to reliance on the binding strap alone for tightening.
Innovation Solution
A self-locking tourniquet design featuring a base strap, binding strap, buckle frame, tightening component with a tightening belt, handle, and stop ring, allowing for easier adjustment and secure fixation using a self-adhesive and stop ring mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the binding strap is tightened to achieve hemostasis, then bleeding control is improved, but a significantly greater pulling force is required for further tightening
Solution Approach 1:
The patent introduces a tightening component as an intermediary mechanism between the user and the binding strap. This component includes a tightening belt that wraps around the binding strap and a tightening handle that provides mechanical advantage through a ratchet mechanism, allowing the user to apply controlled force more efficiently to achieve the required compression level without needing excessive pulling force directly on the binding strap
Solution Approach 2:
The tightening component incorporates a ratchet mechanism that allows the binding strap to be tightened dynamically through incremental adjustments. The ratchet permits motion in one direction (tightening) while preventing reverse motion, enabling the user to achieve and maintain the necessary compression level through controlled, progressive tightening rather than requiring sustained high force
2Reliability
If the binding strap is tightened to a certain degree, then initial hemostasis is achieved, but it becomes difficult to secure the tourniquet to the necessary compression level
Solution Approach 1:
The tightening component serves as a mediator that transforms the user's input force into effective tightening action on the binding strap. The tightening handle with its ratchet mechanism provides mechanical advantage, making it easier to operate compared to directly pulling the binding strap, thus improving ease of operation while achieving the necessary compression level
Solution Approach 2:
The ratchet mechanism in the tightening component enables dynamic adjustment of the binding strap tension. Users can easily incrementally tighten the strap by operating the tightening handle, with the ratchet preventing slippage and maintaining the achieved compression level, thereby significantly improving ease of operation for achieving necessary tightness
3Reliability
If the binding strap is tightened further beyond a certain level, then hemostatic effectiveness is improved, but the required pulling force increases significantly
Solution Approach 1:
The ratchet mechanism in the tightening component allows for dynamic, incremental tightening adjustments. Each operation of the tightening handle advances the binding strap by a controlled amount, enabling the user to progressively increase compression to the level needed for effective bleeding control without requiring sudden or excessive force
Solution Approach 2:
The tightening component with its ratchet mechanism acts as a force-multiplying intermediary. It converts small input forces applied to the tightening handle into larger output forces on the binding strap, making it easier to achieve the high compression levels necessary for effective hemostasis without directly applying excessive force to the binding strap
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
Facilitates easier and secure tightening to the required hemostatic level, ensuring effective bleeding control by reducing the need for excessive force, thereby improving hemostatic results.
Implementation Method 1
The binding strap is fixedly connected with a self-adhesive strap, and extends along the length of the binding strap and is attached to the base strap
Data Source
AI summary
The disclosure relates to a self-locking tourniquet, including a base strap, a binding strap, a buckle frame and a tightening component, where the binding strap is attached to one end of the base strap, the buckle frame is connected to the other end of the base strap, the buckle frame is provided with a buckle hole in a through-type, the binding strap is fixedly connected with a self-adhesive, the self-adhesive extends longitudinally along the binding strap; the tightening component includes a tightening belt, a tightening handle and a stop ring, where one end of the tightening belt is fixedly connected with the binding strap, and the other end of the tightening belt is fixedly connected with the base strap; the tightening handle is provided with a tightening hole in a through-type; and the tightening belt passes through the tightening hole, and the stop ring is connected to the base strap.