Styptic Harness Tourniquet With Layered Compression for Reliable Fixation
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Solution Overview
Problem
Existing hemostatic tourniquets suffer from low reliability, inefficiency, and cause pain due to inadequate compression control, excessive limb pinching, and unreliable fixation, complicating application and leading to incomplete blood flow obstruction.
Innovation Solution
The styptic harness tourniquet features a casing with a Velcro® fastener, a sling, a buckle with multiple holes, a base with additional holes and teeth, and a windlass rod made of aluminum or aluminum alloys, ensuring a stable loop formation and reliable fixation by avoiding direct body contact, with a two-layer casing for rigidity and a fixator for secure windlass rod attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional rubber hemostatic tourniquets are used, then they can stop arterial bleeding, but they cause pain and excessive compression of the injured limb
Solution Approach 1:
The patent changes the material parameter from traditional rubber to a composite structure with a rigid outer layer and flexible inner layer, allowing controlled compression that stops blood flow without causing excessive pain or tissue damage. The rigid layer provides stable compression pressure while the flexible layer distributes it evenly.
Solution Approach 2:
The tourniquet uses a composite material structure combining a rigid outer layer (providing compression stability) with a flexible inner layer (providing comfort and pressure distribution). This composite approach enables reliable blood flow obstruction while minimizing harmful compression effects.
2Ease of operation
If traditional tourniquets with simple fixation devices are used, then they are easy to apply, but the fixation is unreliable and the free end cannot be securely fixed
Solution Approach 1:
The tourniquet incorporates a self-tightening mechanism where the rigid outer layer automatically secures the flexible inner layer through its structural design. The layered configuration allows the tourniquet to tighten itself without requiring complex manual manipulation or additional fixation devices.
Solution Approach 2:
The tourniquet is divided into distinct functional segments: a rigid outer layer for compression and a flexible inner layer for secure fixation. This segmentation allows each layer to perform its specific function optimally while simplifying the overall application process.
3Reliability
If tourniquets with complex tightening mechanisms are used, then fixation reliability may improve, but the application process becomes complicated and time-consuming
Solution Approach 1:
The patent merges the compression function and fixation function into a single integrated structure. The rigid outer layer and flexible inner layer work together as one unified system that simultaneously provides compression and secure fixation without requiring separate tightening mechanisms.
Solution Approach 2:
The tourniquet's self-tightening capability eliminates the need for complex manual tightening mechanisms. The structural design of the layered system allows it to automatically secure itself upon application, reducing both device complexity and application time while maintaining reliable fixation.
4Ease of manufacture
If single-layer tourniquet designs are used, then the structure is simple and easy to manufacture, but they lack structural integrity and cannot provide reliable compression
Solution Approach 1:
The patent employs a composite material structure with a rigid outer layer and flexible inner layer. This composite design provides the structural integrity needed for reliable compression while remaining relatively simple to manufacture through standard layering processes.
Solution Approach 2:
Different regions of the tourniquet have different material properties: the outer layer is rigid for stable compression, while the inner layer is flexible for comfortable pressure distribution and secure fixation. This local differentiation of material quality enables reliable compression without excessive complexity.
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
This design enhances reliability and operational efficiency by providing secure fixation, reducing pain, and ensuring complete blood flow obstruction with improved structural integrity and ease of application.
Implementation Method 1
a casing (1) with Velcro® fastener (2)
Implementation Method 2
a windlass rod (8) is attached to the sling (3)
Implementation Method 3
holes of the buckle (4) and base (5) have teeth (12) on at least one side
Implementation Method 4
the windlass rod (8) contains at least 1 cm of a smooth surface (13) and at least 1.5 cm of a ribbed surface (14)
Data Source
AI summary
A styptic harness tourniquet used by hands for providing a first aid to stop external arterial bleeding from injured limbs. The harness consists of a casing with Velcro fastener, a sling, a buckle at one end of the casing and a base with fixator with strap, windlass rod attached to the sling. The casing has at least two layers, the buckle contains at least one hole, the base contains at least six holes, and the strap of the fixator contains at least one hole. The holes in the buckle and base have teeth on one side. The windlass rod contains at least 1 cm of a smooth surface and at least 1.5 cm of a ribbed surface at the edges. The harness increases the reliability of the structure and the efficiency of its operation.