Cookies
Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
ASTM F1904-23
Standard Guide for Testing the Biological Responses to Medical Device Particulate Debris and Degradation Products in vivo
NORMA vydaná dňa 1.4.2023
Informácie o norme:
Označenie normy: ASTM F1904-23
Dátum vydania normy: 1.4.2023
Kód tovaru: NS-1140878
Počet strán: 10
Približná hmotnosť: 30 g (0.07 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM F1904-23 :
Keywords:
adaptive immune response, apoptosis, biocompatibility, biological response, cell death, chemokines, cytokines, damage-associated molecular patterns, device-related inflammogenicity and tissue remodeling potential, device-related wear debris/degradation products, ex vivo testing, foreign body response, inflammation, innate immune response, interleukins, internalization of debris particles by phagocytes, in vivo testing models, leukocyte markers, lymphocytes, macrophages, necrosis,
Doplňujúce informácie
| Significance and Use | ||||||||
|
5.1?This standard guide is to be used to help assess the biocompatibility of materials used in medical devices (for example, externally communicating, implants, and other body contact medical devices). It is designed to test the effect of particles and other wear debris and/or degradation products on the generation of FBR and other (local and systemic) host responses of immune/inflammatory origin. 5.2?The appropriateness of the selected testing methods should be carefully considered by the user since not all materials or applications need to be tested by this guide. Existing biocompatibility screening methods may not be fully predictive of the human response, and testing approaches such as those described here are needed for continuous improvement of the predictability of biocompatibility testing. The effectiveness of animal testing in terms of its predictability of human outcomes is dependent on the study design. If possible, study endpoints should be chosen to minimize interspecies variability and to investigate clinically relevant biological responses. While testing approaches should remain at the users discretion, the following should be taken into consideration when selecting most appropriate tests and study endpoints. 5.2.1?Device-induced responses usually involve both innate and adaptive immunities, which raises possible need for specific testing for each of these immune response types. 5.2.1.1?Device-related adaptive immune responses are mostly due to lymphocyte-mediated delayed-type hypersensitivity. In vivo allergenicity to a test material (which can be introduced via different routes) should be assessed by monitoring for any signs of allergic and acute toxicity reactions, for example, scratch, tremor, and dyspnea. In addition, ex vivo analysis on immunophenotyping of the isolated splenocytes/lymphocytes from the same studies should be considered. 5.2.1.2?Device-related innate immune responses are mostly mediated by macrophages and can be assessed by histopathological assessment of the extent of FBR including macrophage accumulation around the test material. Supplementary 5.2.2?Due to the role of inflammation in extending device-related FBR and promoting the resultant tissue remodeling, histopathological assessment should include identification of immune/inflammatory cell infiltration (with separate counts for the individual cell types representing both innate and adaptive responses) as well as corresponding tissue changes (for example, fibrosis, necrosis, ossification or osteolysis, angiogenesis). Identification of immune/inflammatory cells may involve different approaches including IHC phenotyping as needed. Supplementary ex vivo / 5.2.2.1?Since the signs of inflammation and post-inflammatory tissue changes may not be always apparent, special attention should be given to the assessment of debris-related inflammogenic and tissue remodeling potentials using 5.2.3?Due to the role of the device-tissue interface in shaping biological responses, in vivo models as well as supplementary testing should be aimed to simulate (as much as possible) device-specific use environments. 5.2.3.1?Since many implantable materials come in contact with blood during their clinical use, the need for hemocompatibility testing should be considered, especially when developing new materials. Development of new materials for cardiovascular applications may benefit from a more detailed hemocompatibility assessment, which could include microcirculation, cell adhesion, and leukocyte-endothelial interactions. 5.2.4?The predictability of testing for a certain material, including its debris, may benefit from the choice of study endpoints and testing approaches that incorporates clinical experience from known therapeutic applications and safety issues of similar materials. 5.2.4.1?In general, the study endpoints should be selected per their ability to measure immunomodulatory, pro/anti-inflammogenic, and tissue remodeling effects. As the examples of more specific choices, testing for an orthopedic material should take into consideration potential tissue changes such as periprosthetic osteolysis and pseudotumors, while testing for a cardiovascular material should take into consideration potential hemolytic, thrombolytic/thrombogenic, and pro-angiogenic effects. 5.2.4.2?Some endpoints currently used in effectiveness assessments can be applied to the safety assessment of adverse tissue remodeling (examples of osteogenesis-related study endpoints can be found in X1.12). 5.2.4.3?While not all possible clinical complications can be accurately replicated in animal testing models, the properly selected study endpoints for in vivo and supplementary in vitro testing can enhance the overall predictability of biocompatibility testing (more details on the choice of measurable study endpoints are provided in X1.5). 5.2.5?Rodents and other small animals (for example, rabbit, guinea pig) are traditionally used for 5.3?Abbreviations Used:? 5.3.1?ALVALAseptic lymphocyte-dominated vasculitis-associated lesion. 5.3.2?CDCluster differentiation. 5.3.3?DAMPDamage-associated molecular pattern. 5.3.4?EDS/EDAXEnergy dispersive X-ray spectroscopy. 5.3.5?ELISAEnzyme-linked immunosorbent assay. 5.3.6?FBGCForeign body giant cell. 5.3.7?FBRForeign body response. 5.3.8?FTIRFourier-transform infrared (spectroscopy). 5.3.9?H&EHematoxylin and eosin. 5.3.10?HMGB1High-mobility group box 1. 5.3.11?HSPHeat shock protein. 5.3.12?ICAM1Intercellular adhesion molecule-1. 5.3.13?ICP-MSInductively coupled plasmamass spectrometry. 5.3.14?IgImmunoglobulin. 5.3.15?ILInterleukin. 5.3.16?LALLimulus amebocyte lysate. 5.3.17?LPSLipopolysaccharide (endotoxin). 5.3.18?MMPMatrix metalloproteinase. 5.3.19?NONitric oxide. 5.3.20?NOS/iNOSNitric oxide synthase / Inducible nitic oxide synthase. 5.3.21?PCRPolymerase chain reaction. 5.3.22?ROSReactive oxygen species. 5.3.23?SAASerum amyloid A. 5.3.24?SEMScanning electron microscopy. 5.3.25??-SMAAlpha-smooth muscle actin. 5.3.26?TBARSThiobarbituric acid reactive substances. 5.3.27?TGF-?Transforming growth factor-beta. 5.3.28?TLRToll-like receptor. 5.3.29?TNF-?Tumor necrosis factor-alpha. 5.3.30?TRAPTartrate-resistant acid phosphatase. 5.3.31?VEGFVascular endothelial growth factor. |
||||||||
| 1. Scope | ||||||||
|
1.1?The purpose of this standard guide is to describe the principles and approaches to testing of medical device debris and degradation products from device materials (for example, particles from wear) for their potential to activate a cascade of biological responses at local and systemic levels in the body. In order to ascertain the role of device debris and degradation products in stimulating such responses, the nature of the responses and the consequences of the responses should be evaluated. This is an emerging area. The continuously updated information gained from the testing results and related published literature is necessary to improve the study designs, as well as predictive value and interpretation of the test results regarding debris/degradation product related responses. Some of the procedures listed here may, on further testing, not prove to be predictive of clinical responses to device-related debris and degradation products. However, only the continuing use of standard protocols will establish the most useful testing approaches with reliable study endpoints and measurement techniques. Since there are many possible and established ways of determining the debris/degradation product related responses 1.2?This document is to provide the users with updated scientific knowledge that may help better characterize medical device debris related responses. It is to help the users to optimize their plans for particle characterization and biocompatibility assessment by considering the testing principles and methods available in published literature that are appropriate to their products. 1.3?This standard is not sufficient to address device-related degradation products that result in gas formation or that are exclusively represented by nanoparticles, or soluble species such as dissolved metal ions. 1.4?While devices should be designed and manufactured in such a way as to reduce as far as possible the risks posed by substances or particles (including wear debris, degradation products, and processing residues) that may be released from the device, this standard guide may help users to identify the presence of wear debris and degradation products and subsequent adverse reactions that may occur. 1.5?Although this guide is based on the available device debris-related knowledge that is largely based on orthopedic devices, most of the recommendations are also applicable to other (non-orthopedic) device areas. 1.6?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||||||||
| 2. Referenced Documents | ||||||||
|
Odporúčame:
Aktualizácia technických noriem
Chcete mať istotu, že používate len platné technické normy?
Ponúkame Vám riešenie, ktoré Vám zaistí mesačný prehľad o aktuálnosti noriem, ktoré používate.
Chcete vedieť viac informácií ? Pozrite sa na túto stránku.
