Biodegradable Blood Pressure Cuff Using Polymer Blends
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Solution Overview
Problem
The disposal of non-biodegradable plastic blood pressure cuffs poses environmental concerns and challenges for healthcare facilities seeking to reduce cross-contamination and meet sustainability goals.
Innovation Solution
Development of a biodegradable blood pressure cuff using a blend of biodegradable polymers, such as poly-lactic acid (PLA) and polyhydroxyalkanoates (PHA), combined with non-biodegradable polymers like poly-terephthalate, to create a cuff that is both safe for patient use and environmentally friendly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If non-biodegradable plastic materials are used in blood pressure cuffs, then the durability and reliability of the device is maintained, but the environmental impact increases and sustainability goals cannot be met
Solution Approach 1:
The patent applies composite materials by combining biodegradable polymers (such as poly-lactic acid and polyhydroxyalkanoates) with non-biodegradable polymers (such as poly-terephthalate) to create a blood pressure cuff that maintains the necessary durability and reliability while incorporating biodegradable components that can decompose after use, thereby reducing environmental impact and allowing hospitals to meet sustainability goals
2Object-affected harmful factors
If single-patient-use disposable blood pressure cuffs are implemented, then cross-contamination between patients is reduced, but the volume of medical waste increases
Solution Approach 1:
The patent applies parameter changes by modifying the material composition of disposable blood pressure cuffs to include biodegradable polymers. This changes the degradation parameter of the material from permanent persistence to biodegradability, allowing the cuff to maintain its single-use function for preventing cross-contamination while the biodegradable components break down after use, thereby reducing the long-term accumulation of medical waste
3Ease of manufacture
If conventional non-biodegradable materials are used, then manufacturing simplicity is maintained, but recycling and disposal become problematic
Solution Approach 1:
The patent applies composite materials by creating a blood pressure cuff from a blend of biodegradable and non-biodegradable polymers. This composite approach maintains relatively simple manufacturing processes similar to conventional cuffs while the biodegradable portion of the material can naturally decompose, significantly easing the disposal burden and eliminating the need for complex recycling infrastructure
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 biodegradable blood pressure cuff reduces the risk of cross-contamination and minimizes environmental impact by decomposing faster than conventional materials, as demonstrated by lab testing using ASTM D5511 standards.
Implementation Method 1
an additive comprising a blend or copolymer of (1) a first polymer selected from a poly-lactic acid (PLA), a polyhydroxyalkanoates (PHA) or a combination thereof and (2) a second polymer which is a poly-terephthalate
Data Source
AI summary
A blood pressure cuff is disclosed having an inflatable bladder of: a non-biodegradable polymer selected from a group consisting of polyamide, polyester, polyethylene (PE), polypropylene (PP), polyvinylchloride (PVC), polyurethane and combinations thereof; and an additive comprising a blend or copolymer of (1) a first polymer selected from a poly-lactic acid (PLA), a polyhydroxyalkanoates (PHA) or a combination thereof and (2) a second polymer which is a poly-terephthalate. The blood pressure cuff may be single-use of reusable.