Single-use Devices Research Articles

Reuse and Reprocessing of Endoscopic Instruments: For

Reusable endoscopes appear to be most environmentally sustainable when the carbon footprint of routine device maintenance is optimized. Single-use endoscopes may offer cost-savings in clinical settings that accelerate device damage, such as prolonged procedure time or complex patient anatomy. For many urology practices, a hybrid approach that integrates single-use and reusable devices may be most economically sensible and environmentally sound.

Remotely detuned receiver coil for high-resolution interventional cardiac magnetic resonance imaging.

Interventional cardiac MRI in the context of the treatment of cardiac arrhythmia requires submillimeter image resolution to precisely characterize the cardiac substrate and guide the catheter-based ablation procedure in real-time. Conventional MRI receiver coils positioned on the thorax provide insufficient signal-to-noise ratio (SNR) and spatial selectivity to satisfy these constraints. A small circular MRI receiver coil was developed and evaluated under different experimental conditions, including high-resolution MRI anatomical and thermometric imaging at 1.5 T. From the perspective of developing a therapeutic MR-compatible catheter equipped with a receiver coil, we also propose alternative remote active detuning techniques of the receiver coil using one or two cables. Theoretical details are presented, as well as simulations and experimental validation. Anatomical images of the left ventricle at 170 µm in-plane resolution are provided on ex vivo beating heart from swine using a 2 cm circular receiver coil. Taking advantage of the increase of SNR at its vicinity (up to 35 fold compared to conventional receiver coils), real-time MR-temperature imaging can reach an uncertainty below 0.1°C at the submillimetric spatial resolution. Remote active detuning using two cables has similar decoupling efficiency to conventional on-site decoupling, at the cost of an acceptable decrease in the resulting SNR. This study shows the potential of small dimension surface coils for minimally invasive therapy of cardiac arrhythmia intraoperatively guided by MRI. The proposed remote decoupling approaches may simplify the construction process and reduce the cost of such single-use devices.

Environmentally sustainable gastroenterology practice: Review of current state and future goals.

The health-care sector contributes 4.6% of global greenhouse gas emissions, with gastroenterology playing a significant role due to the widespread use of gastrointestinal (GI) endoscopy. In this review, we aim to understand the carbon footprint in gastroenterology practice associated with GI endoscopy, conferences and recruitment, identify barriers to change, and recommend mitigating strategies. A comprehensive search of PubMed, Embase, and the Cochrane Library was conducted to explore the carbon footprint in gastroenterology practice, focusing on endoscopy, inpatient and outpatient settings, and recruitment practices. Recommendations for mitigating the carbon footprint were derived. This narrative review analyzed 34 articles on the carbon footprint in gastroenterology practice. Carbon footprint of endoscopy in the United States is approximately 85,768 metric tons of CO2 emission annually, equivalent to 9 million gallons of gasoline consumed, or 94 million pounds of coal burned. Each endoscopy generates 2.1 kg of disposable waste (46 L volume), of which 64% of waste goes to the landfill, 28% represents biohazard waste, and 9% is recycled. The per-case manufacturing carbon footprint for single-use devices and reusable devices is 1.37 kg CO2 and 0.0017 kg CO2, respectively. Inpatient and outpatient services contributed through unnecessary procedures, prolonged hospital stays, and excessive use of single-use items. Fellowship recruitment and gastrointestinal conferences added to the footprint, mainly due to air travel and hotel stays. Gastrointestinal endoscopy and practice contribute to the carbon footprint through the use of disposables such as single-use endoscopes and waste generation. To achieve environmental sustainability, measures such as promoting reusable endoscopy equipment over single-use endoscopes, calculating institutional carbon footprints, establishing benchmarking standards, and embracing virtual platforms suchas telemedicine and research meetings should be implemented.

Single-use accessories and endoscopes in the era of sustainability and climate change-A balancing act.

Gastrointestinal (GI) endoscopy is among the highest waste generator in healthcare facilities. The major reasons include production of large-volume non-renewable waste, use of single-use devices, and reprocessing or decontamination processes. Single-use endoscopic accessories have gradually replaced reusable devices over last two decades contributing to the rising impact of GI endoscopy on ecosystem. Several reports of infection outbreaks with reusable duodenoscopes raised concerns regarding the efficacy and adherence to standard disinfection protocols. Even the enhanced reprocessing techniques like double high-level disinfection have not been found to be the perfect ways for decontamination of duodenoscopes and therefore, paved the way for the development of single-use duodenoscopes. However, the use of single-use endoscopes is likely to amplify the net waste generated and carbon footprint of any endoscopy unit. Moreover, single-use devices challenge one of the major pillars of sustainability, that is, "reuse." In the era of climate change, a balanced approach is required taking into consideration patient safety as well as financial and environmental implications. The possible solutions to provide optimum care while addressing the impact on climate include selective use of disposable duodenoscopes and careful selection of accessories during a case. Other options include use of disposable endcaps and development of effective high-level disinfection techniques. The collaboration between the healthcare professionals and the manufacturers is paramount for the development of environmental friendly devices with low carbon footprint.

Health system decarbonization on obstetric and newborn units

The healthcare industry makes up 4.6 % of greenhouse gas (GHS) emissions worldwide. Although it is not known what proportion of GHGs come from obstetric and newborn units, newborns and pregnant individuals are likely to face some of the largest consequences from climate change. We review the literature in the areas of decarbonization on labor and delivery (L&D) and neonatal units and describe innovations from the fields of surgery and anesthesia. Best practices for L&D include refining disposable equipment packs, decreasing the use of single-use medical devices, adequately triaging waste, and decreasing the use of potent anesthetic gases such as nitrous oxide and desflurane. In neonatal settings, similarly triaging waste and decreasing the use of plastics containing endocrine disrupting chemicals can lower the carbon and environmental footprint and improve neonatal health. Additionally, avoiding unnecessary cesarean deliveries and increasing breastfeeding practices are also likely to improve the carbon footprint of L&D and neonatal units.

Reuse and Reprocessing of Endoscopic Instruments: Con

Reprocessing of endoscopic equipment generates greenhouse gas emissions, releases toxic substances into the environment, and consumes large quantities of water. The use of alternative materials, such as single-use devices with a low carbon footprint and recycled materials, and reprocessing without the use of water and toxic products represent sustainable solutions.

The Adherence and Outcomes Benefits of Using a Connected, Reusable Auto-Injector for Self-Injecting Biologics: A Narrative Review.

Many biologics are now self-administered by patients at home. A variety of self-injection devices are available, including vials and syringes, prefilled syringes, and spring-driven prefilled pens or auto-injectors. Each has advantages and drawbacks, and different devices suit different patients. For example, some patients have difficulty achieving consistent and successful self-injection due to poor manual dexterity, or experience anxiety at the prospect of self-injection or injection-site pain. These factors can reduce patients' medication adherence and overall experience. Furthermore, while self-injection brings patients many benefits, the proliferation of single-use injection devices has implications for environmental sustainability, including the reliance on single-use plastics, repeated freighting requirements, and need for incineration as hazardous waste. Recently developed, innovative electromechanical auto-injector devices offer technological enhancements over existing devices to overcome some of these issues. Features include customisable injection speeds or durations, consistent rate of injection, electronic injection logs and reminders, and step-by-step, real-time instructions. Indeed, a growing body of evidence points to higher adherence rates among patients using electromechanical devices compared with other devices. Further, with time, the reusability of electromechanical devices may prove to lighten the environmental impact compared with disposable devices, especially as research continues to optimise their sustainability, driven by increased consumer demands for environmental responsibility. This narrative review discusses the differences between prefilled syringes, spring-driven prefilled pens, and electromechanical devices. It also explores how these features may help reduce injection-associated pain and anxiety, improve patient experience, connectivity and adherence, and drive sustainability of biologic drugs in future.

Cryopreservation of Duckweed Genetic Diversity as Model for Long-Term Preservation of Aquatic Flowering Plants.

Vegetatively propagating aquatic angiosperms, the Lemnaceae family (duckweeds) represents valuable genetic resources for circular bioeconomics and other sustainable applications. Due to extremely fast growth and laborious cultivation of in vitro collections, duckweeds are an urgent subject for cryopreservation. We developed a robust and fast DMSO-free protocol for duckweed cryopreservation by vitrification. A single-use device was designed for sampling of duckweed fronds from donor culture, further spin-drying, and subsequent transferring to cryo-tubes with plant vitrification solution 3 (PVS3). Following cultivation in darkness and applying elevated temperatures during early regrowth stage, a specific pulsed illumination instead of a diurnal regime enabled successful regrowth after the cryopreservation of 21 accessions of Spirodela, Landoltia, Lemna, and Wolffia genera, including interspecific hybrids, auto- and allopolyploids. Genome size measurements revealed no quantitative genomic changes potentially caused by cryopreservation. The expression of CBF/DREB1 genes, considered as key factors in the development of freezing tolerance, was studied prior to cooling but was not linked with duckweed regrowth after rewarming. Despite preserving chlorophyll fluorescence after rewarming, the rewarmed fronds demonstrated nearly zero photosynthetic activity, which did not recover. The novel protocol provides the basis for future routine application of cryostorage to duckweed germplasm collections, saving labor for in vitro cultivation and maintaining characterized reference and mutant samples.

Comparative life cycle assessment of single-use cardiopulmonary bypass devices

The purpose of this study is to evaluate the impacts of the common cardiopulmonary bypass device over its life cycle. This represents the first such assessment of a complex medical device, to the best of the authors’ knowledge. This study was motivated by practitioners’ concerns over cardiopulmonary bypass devices constructed mainly of single-use plastics, such as polyvinyl chloride and polycarbonate. The open-source software OpenLCA was used to perform each life cycle assessment with respect to ten common impact categories: global warming, eutrophication, acidification, smog, human health cancer, human health non-cancer, water intake, human health air pollutants, ecotoxicity, and natural resource depletion. The environmental impact was evaluated using the Building for Environmental and Economic Sustainability impact assessment method. To quantify the uncertainty in the results, Monte Carlo simulation was used using 5000 runs. A comparative assessment was conducted to determine the potential trade-offs in each impact category of using alternative construction materials. Incineration as a common disposal option could contribute up to 33 % of total CO2 equivalent emissions over the life cycle of the device. Another 33% of total CO2 equivalent emissions are attributed to polycarbonate used in the construction of devices. Polycarbonate was also implicated as the top contributor to the other impact categories considered, except for human health cancer, which is almost entirely affected by the use of polyvinyl chloride in the device, primarily in the tubes. The accuracy of these results is corroborated by the uncertainty analysis. Lastly, the results show that replacing polycarbonate with polyethylene terephthalate, polypropylene, or polyethylene would be no worse than polycarbonate and provide a significant decrease in almost every impact category. Cardiopulmonary bypass devices are constructed primarily of single-use plastics that have relatively significant impacts in the 10 common categories considered. Alternative disposal methods and replacement of polycarbonate with alternative plastics could dramatically reduce the effects in most impact categories.

Lifecycle extension of single-use medical device sensors: Case study of an engineering sustainability transition program

Medical devices and consumables are contributors to the known, highly negative ecological impacts of healthcare provision. Medical device manufacturing organizations are increasingly met with pressures to convert thousands of their existing, post-market products to be more sustainable, yet there is limited knowledge of how these transition projects are achieved. This case study examines the execution of a large medical device manufacturer's sustainability transition program of a post-market single-use sensor. We provide both a detailed synthesis of the design verification steps and a review of the key challenges which were identified during a customer-driven lifecycle extension program of a single-use medical device sensor; the case study sensor was released with a doubled shelf life, thus increasing the time of safe and effective use plus decreased scrapping needs. This paper contributes to the knowledge for the practical development of the required design verification efforts of released, highly regulated single-use medical device sensor products during sustainability transition programs. This paper increases knowledge related to the complexities and challenges technology ecosystem sustainability programs face in the post-market medical device consumable space during reverification of legacy products to meet sustainability challenges. Additionally, the paper identifies six phases of waste during a single-use medical device sensor's lifecycle.

Prevalence of Hospital-Onset Bacteremia Pre- and Post-Implementation of a Needleless Blood Sampling Device From Existing Peripheral Catheters.

Repeated access of peripheral intravenous (IV) devices theoretically increases the risk of bacterial exposure. PIVO™ (VelanoVascular) is a needleless, single-use device that enables blood sampling from an existing peripheral IV. The goal of this retrospective observational exploratory study was to evaluate the influence of PIVO use on rates of hospital-onset bacteremia and fungemia (HOB) by comparing HOB rates in the year before and after PIVO introduction in hospitals implementing PIVO and over similar time periods in "control" hospitals with no PIVO. Two hospitals implementing PIVO (Hospital 1, a large community hospital; Hospital 2, a tertiary oncology center), and 71 control hospitals were included. During the 1-year period before and after PIVO introduction, HOB rates decreased in hospitals 1 and 2 by 31.9% and 41.8%, respectively. Control hospitals that did not use PIVO had a 12.4% decrease in HOB rates. Multivariable logistic regression analyses found that PIVO was associated with a lower risk (Hospital 1 odds ratio [OR]: 0.63; 95% CI, 0.42-0.94) or no change (Hospital 2 OR: 1.05; 95% CI, 0.72-1.52) in HOB rates. Control hospitals also showed no change in HOB rates between the 2 time periods. These data do not support concerns about increased risk of bacteremia with PIVO.

A Study to Assess the Acceptance of Doctors toward the Practice of Reusing of Cardiac Disposables in Coronary Angioplasty in a Tertiary Care Hospital

Objectives: Health-care providers are expected to deliver quality patient care cost-effectively, especially in developing countries. Medical devices labeled “single use only” should ideally not be reused but, can be considered for reuse due to their higher cost. Stringently regulated reprocessing of the single-use device provides an opportunity to do so along with the potential to have a favorable impact on environmental waste. The aim of this study is to assess the acceptance of doctors toward the practice of reusing cardiac disposables in coronary angioplasty. Materials and Methods: An open-ended and self-designed questionnaire was prepared and was standardized by a panel of cardiologists to assess doctors’ acceptance toward reusing cardiac disposable in coronary angioplasty. The cardiologists were interviewed individually, and the responses were analyzed. Results: The cardiologists were aware that the angioplasty disposables were being reused. The majority were satisfied with the sterilization of disposables and were of the opinion that it was safe for the patients. Cardiac catheters were reused 5–6 times while the balloons were reused 3–4 times. An increase in procedure time of 10–15 min was observed in 30% of the patients. There was an increase, in contrast, volume of about 40–50 mL with reused cardiac catheters and balloons which was observed in 15% of the patients. Defect in the physical integrity of the catheter, that is, tip abrasion/microfracture was observed in 1% of the patients. Deflation dysfunction of the balloon during the procedure was observed in 2% of the patients, while breakage of the balloon from the shaft and entanglement of the balloon was observed in 1% of the patients. Balloon rupture during angioplasty was observed in 8% of the patients. Around 1.5% of the patients undergoing angioplasty with reused disposables were presented with infections. Thrombosis was observed in 3% of the patients with reused disposables, and it was the most common adverse event post-angioplasty. There were cases where the patients were sent for emergency surgery/coronary artery bypass graft surgery due to balloon entanglement and about 0.1% of the patients were found to have such a complication. Conclusion: Cardiac disposables can be safely reused by health-care professionals, especially in developing nations due to their budget constraints, provided it is reused no more than 3–5 times and efficient methods of sterilization are observed.

Reusable laryngoscope blades: a more eco-responsible and cost-effective alternative

IntroductionConsumption of single-use medical devices has increased considerably, contributing to the excessive wastage produced during surgical procedures. The present study aimed to describe a methodology to assess the transition from single-use blades (SUB) to reusable laryngoscope blades (RUB) and to assess the ecological and economic impact of the switch. MethodsThe ecological analysis was based on the life cycle assessment method. Based on 30 operating rooms in a single tertiary university hospital, the economic analysis compared the usual SUB supplier with four RUB suppliers considering different costs: blade purchasing and depreciation, reprocessing, logistics and waste management. ResultsIn 2021, 17,200 intubations were performed requiring about 147 RUBs. Switching from SUB to RUB led to an annual saving of 26.5 tons of CO2eq (global warming impact), equivalent to 120 000 km by car. It avoids the extraction of 6.6 tons Oileq (petroleum) and 579 kg of copper (mineral resources) per year. This action also leads to a land occupation reduction of 626 m2 per year and water savings of 221.6 m3 per year. The average cost per intubation varies from 3.16 [3.15–3.16] for SUB to 2.81 [2.77–2.85] for RUB, representing an average saving of 0.35 per intubation leading to 5783.50 annual gain [5074.00–6192.00]. RUB are preferable from 3 and 86 uses from an ecological and economic viewpoint, respectively. ConclusionIn a model of 17,200 intubations /year, switching SUD to RUB would save 26.5 tons of CO2eq and 6.6 tons of Oileq with 5783.50 annual gain. RUBs are ecologically and cost-effective after 3 and 86 uses, respectively.

Are single-use flexible cystoscopes environmentally sustainable? A lifecycle analysis

Objective: Single-use flexible cystoscopes provide a safe and cost-effective evolution to current practice. However, the environmental impact of single-use devices needs to be considered in a healthcare system that is being increasingly scrutinised for its carbon footprint. We performed a single-centre simplified lifecycle analysis to compare the carbon footprint of the single-use Ambu® aScope™ 4 Cysto System (Ambu®) with the reusable Olympus CYF-VH flexible video-cystoscope (Olympus). Methods: Manufacturing, transportation and waste costs were calculated for the Ambu® cystoscope. Manufacturing costs incorporating the average lifecycle of the reusable cystoscope was included in the carbon footprint calculation for the Olympus reusable cystoscope as were waste costs and re-processing costs using the Soluscope 3 automatic endoscope re-processor that is used in our centre. Results: Results demonstrate that Ambu® cystoscopes are a carbon-friendly alternative to reusable Olympus cystoscopes, with a 36% lower carbon footprint. The carbon footprint of the Ambu® scope is 1.43 kg CO2 compared with 2.22 kg CO2 for the reusable Olympus cystoscope. These results may vary from centre to centre depending on the cystoscope re-processor used. Conclusion: The Ambu® single-use flexible cystoscopes provide a carbon-friendly alternative to Olympus CYF-VH reusable cystoscopes. Level of evidence: IV

Grafted chitosan thin films of various degrees of acetylation as a reusable platform for the investigation of biological interactions

Surface treatment by adhesive polymers is a promising solution to immobilize and study bacteria cells through microscopic assays and, for example, control their growth or determine their susceptibility to antibiotic treatment. The stability of such functional films in wet conditions is crucial, as the film degradation would compromise a persistent use of the coated devices. In this work, low roughness chitosan thin films of degrees of acetylation (DA) ranging from 0.5 % to 49 % were chemically grafted onto silicon and glass substrates and we have demonstrated how the physicochemical properties of the surfaces and the bacterial response were DA-dependent. A fully deacetylated chitosan film presented an anhydrous crystalline structure while the hydrated crystalline allomorph was the preferred structure at higher DA. Moreover, their hydrophilicity increased at higher DA, leading to higher film swelling. Low DA chitosan-grafted substrate favored bacterial growth away from the surface and could be envisioned as bacteriostatic surfaces. Contrarily, an optimum of Escherichia coli adhesion was found for substrates modified with chitosan of DA = 35 %: these surfaces are adapted for the study of bacterial growth and antibiotic testing, with the possibility of reusing the substrates without affecting the grafted film – ideal for limiting single-use devices.

The impact of a ventilation timing light on CPR Quality: A randomized crossover study

A ventilation timing light (VTL) is a small commercially available single-use device that is programmed to light up at six-second intervals prompting rescuers to provide a single controlled breath during manual ventilation. The device also indicates the duration of the breath by remaining illuminated for the duration of the inspiratory time. The aim of this study was to evaluate the impact of the VTL on a selection of CPR quality metrics. MethodsA total of 71 paramedic students who were already proficient in performing high-performance CPR (HPCPR) were required to perform HPCPR with and without a VTL. The quality of the HPCPR delivered, reflected by the selected quality metrics; chest compression fraction (CCF), chest compression rate (CCR), and ventilation rate (VR), was then evaluated. ResultsWhile HPCPR with and without a VTL were both able to achieve guideline-based performance targets of CCF, CCR, and VR, the group who had used the VTL to deliver HPCPR were able to consistently provide 10 ventilations for every minute of asynchronous compressions (10 breath/min vs 8.7 breath/min p < 0.001). ConclusionThe use of a VTL allows for a VR target of 10 ventilations per minute to be consistently achieved without compromising guideline-based compression fraction targets (>80%), and chest compression rates when used during the delivery of HPCPR in a simulated OHCA event.

MT7 Hospital Waste and Cost Prevention Potential of Reprocessing Medical Devices

Surgery and related postoperative care are resource-intensive, generating large amounts of healthcare waste within a hospital. Single-use medical devices can exacerbate this problem. We assessed the waste and cost prevention potential of switching from a single-use to a multi-use intermittent pneumatic compression (IPC) system from the US hospital payer’s perspective.

Sustainable waste management in anaesthesia and critical care

Collaborators: Yorkshire Green Anaesthesia Society, Anaesthetic Audit and Research Matrix of Yorkshire, South Yorkshire Hospitals Audit and Research Collaboration Background: The NHS is responsible for 4% of the UK carbon footprint; waste and water are together responsible for 5% of this. The NHS has set targets to have net zero emissions by 2045.1 Anaesthetists report discarding single-use items from pre-made device insertion packs without having used them, thus identifying a potential waste hotspot that could be tackled to reduce environmental and financial costs. Our aim was to identify whether items are wasted from commonly used pre-made packs in anaesthesia and critical care, and if so, quantify the carbon footprint and financial costs of this waste. Method: All acute hospital Trusts in Yorkshire and Humber were invited to participate. Data were collected for a period of 2 weeks on the items discarded unused from the following premade packs in anaesthesia and critical care: spinal, arterial line, central line, and cannula. Waste hotspots were identified as items most commonly discarded unused across all pack types. One of each of these items was broken down, and the constituent materials were identified and weighed. The weight for each item was multiplied by a conversion factor from the ICE database to calculate their materials’ carbon footprint.2 Results: During the study period, data from 319 pre-made packs were reported across 10 Trusts. All the reported packs included single-use items that were thrown away unused. There was variation in the constituents of each pack, however overall, the following items were most commonly wasted when they were present in a pack; 100% of cannula pack drapes, 90% of disposal bags, 74% of sharps safety disposal mats, 56% of green needles, 56% of 2 ml syringes, 51% of non-woven (white) gauze, 43% of gallipots, 38% of orange needles, 35% of 5 ml syringes, and 16% of woven (green) gauze. The total carbon equivalent of the top nine items thrown away, for which material information was available, was 8.94 kg CO2 equivalent (CO2e). Extrapolated over 1 yr this equates to a CO2e of 232 kg. The total weight of these items was >2 kg, equating to 56 kg unnecessary waste per year. Disposal of these would equate to a carbon cost of a further 20 kg CO2e over a year.3 Conclusion: Device insertion packs are a waste hotspot. The waste identified has environmental, financial, and social impacts. A multidisciplinary approach including healthcare staff, procurement teams, and suppliers is necessary to reduce waste from single-use device insertion packs. This might include exploring reusable options and removing unnecessary items from pre-made packs. 1.NHS. 2020. Delivering a ‘net zero’ national health service. Available from https://www.england.nhs.uk/greenernhs/wp-content/uploads/sites/51/2020/10/delivering-a-net-zero-national-health-service.pdf (accessed 20/03/23)2.Circular Ecology. 2019. Embodied Carbon – The ICE database. Available from https://circularecology.com/embodied-carbon-footprint-database.html (accessed 20/03/23)3.Rizan C, Bhutta MF, Reed M, Lilywhite R. J Clean Prod 2021; 286: 125446

Rezum: a novel transurethral water vapor therapy for benign prostatic hyperplasia

Rezum: a novel transurethral water vapor therapy for benign prostatic hyperplasia

Light-Writing & Projecting Multicolor Fluorescent Hydrogels for On-Demand Information Display.

Intelligent rewritable display systems have been long-expected to reduce the heavy consumption of single-use or transient devices in the age of Internet-of-Things. However, it remains challenging to construct such systems with integrated functionality of remote control, rapid activation, multicolor and multimode display. Herein, by learning from the unique multilayer arrangement of chromatophores in chameleon skins, we present a promising kind of rewritable hydrogel multicolor systems that can combine the merits of near-infrared (NIR) light-writing & projecting modes for on-demand information display. Specifically, the systems have typical multilayer layout consisting of PDMS-sealed carbon nanotubes (CNTs) film as photothermal control unit and embedded fluorescent hydrogels as multicolor display unit, in which thermo-responsive hydrogel is constrained within non-responsive hydrogel. Such rational structure design results in the establishment of one promising display mechanism via the cascading "light trigger-heat generation-fluorescence output" process. On this basis, rapid and reversible hand-written display of arbitrary information is achieved within 5 s. Also, sustainable light-projecting display of predesigned multicolor patterns is demonstrated due to the multilayer design that ensures easy patterning of photothermal control or hydrogel display layer. This study brings functional-integrated merits for novel rewritable display systems and open new possibility to construct high-end products for information display/transmission. This article is protected by copyright. All rights reserved.