An enzymatic based formulation for cleaning and disinfection of medical devices

2021 ◽  
Vol 13 (1) ◽  
pp. 45-59
Author(s):  
Betty Lame Phalalo ◽  
James Hungo Kimotho ◽  
Naomi Maina
Keyword(s):  
Medical Devices ◽  
Cleaning And Disinfection

scholarly journals Standard manual reprocessing of angiographic systems in the hybrid OR

2017 ◽  
Vol 3 (2) ◽  
pp. 405-407
Author(s):  
Sebastian Buhl ◽  
Carina Werner ◽  
Clemens Bulitta
Keyword(s):  
Pilot Study ◽  
Medical Devices ◽  
Initial Assessment ◽  
Hybrid Operating Room ◽  
Medical Products ◽  
Fda Guidance ◽  
Microbiological Examination ◽  
Artis Zeego ◽  
Cleaning And Disinfection ◽  
A Current

AbstractA current FDA guidance demands the validation of cleaning and disinfecting protocols even for non-sterile medical devices. The aim of this work is to clarify whether this is already possible using the guidance itself as well as the German DIN EN ISO 17664. An angiography system (Artis Zeego / Pheno - Siemens) was selected as a test object for the validation of a cleaning and disinfection protocol for medical devices in a hybrid operating room. In pilot study prior to the trial, critical points of the system were evaluated by means of questionnaires to clinical users (OTA, surgical technicians). An initial assessment of the in-house cleaning protocols used in the hospitals was done by using a fluorescence assay. The microbiological examination took place subsequently by contact plates and swabbing to determine the amount and type of germs on the surfaces of the system. These experiments were done at three different clinical sites. It was found that there was a significant germ count on several surfaces of the product even after in-house cleaning and disinfection (C&D). After application of an enhanced C&D plan, these germs could be greatly reduced at all verified sites. In addition, it could be shown that DIN EN ISO 17664 can in principle be applied to non-sterile medical products.

scholarly journals Design and Evaluation of a Novel Instrument Gripper for Handling of Surgical Instruments

2021 ◽  
Vol 7 (1) ◽  
pp. 1-5
Author(s):  
Jan Heibeyn ◽  
Nils König ◽  
Nadine Domnik ◽  
Matthias Schweizer ◽  
Max Kinzius ◽  
...  
Keyword(s):  
Medical Devices ◽  
State Of The Art ◽  
Surgical Instruments ◽  
Risk Of Infection ◽  
Force Transmission ◽  
Common Features ◽  
Force Closure ◽  
Pick And Place ◽  
Manual Labour ◽  
Cleaning And Disinfection

Abstract Introduction: Contaminated surgical instruments are manually prepared for cleaning and disinfection in the reprocessing unit for medical devices (RUMED). Manual labour exposes staff to the risk of infection and is particularly stressful at peak times due to the large volume of instruments. Partial automation of processes by a robot could provide a solution but requires a gripper that can handle the variety of surgical instruments. This paper describes the development and first evaluation of an instrument gripper. Methods: First, an analysis of gripping geometries on basic surgical instruments is carried out. Based on the identified common features and a review of the state of the art of gripper technology, the SteriRob gripper concept is developed. The concept is compared with a force closure gripper in a series of tests using seven criteria. Results: Both gripping approaches investigated can be used for handling surgical instruments in a pick-and-place process. However, the SteriRob gripper can transmit significantly higher acting forces and torques. In addition, the gripping process is more robust against deviations from the expected instrument position. Conclusion: Overall, it has been shown that the developed instrument gripper is suitable for about 60% of reusable surgical instruments due to the focus on horizontal cylindrical geometries. Because of the large possible force transmission, this gripping approach is particularly suitable for tasks in which the robot assists with cleaning processes.

Corrosion and fracture of a silver tracheostomy tube

1991 ◽  
Vol 105 (1) ◽  
pp. 48-49 ◽  
Author(s):  
P. J. Brockhurst ◽  
C. K. Feltoe
Keyword(s):  
Corrosion Resistance ◽  
Medical Devices ◽  
Tracheostomy Tube ◽  
Body Fluids ◽  
Mechanical Integrity ◽  
Long Period ◽  
The Future ◽  
Mechanism Of Degradation ◽  
Brazed Joint ◽  
Cleaning And Disinfection

AbstractA sterling silver tracheostomy tube broke in use resulting in the death of a child. The nature of the fracture in the brazed joint is described, and corrosion identified as the mechanism of degradation of the joint. The corrosion is due either to exposure to body fluids over a long period, or to the use of hypochlorite solutions for cleaning and disinfection. The silver braze used had inferior corrosion resistance. It is recommended that appropriate grades of silver brazing alloy be used in the future, and that the mechanical integrity of medical devices joined with silver braze be regularly checked to anticipate failure in use.

scholarly journals Multi-society Guideline for Reprocessing Flexible Gastrointestinal Endoscopes

2003 ◽  
Vol 24 (7) ◽  
pp. 532-537 ◽  
Author(s):  
Douglas B. Nelson ◽  
William R. Jarvis ◽  
William A. Rutala ◽  
Amy E. Foxx-Orenstein ◽  
Gerald Isenberg ◽  
...  
Keyword(s):  
Medical Devices ◽  
Gastrointestinal Endoscopy ◽  
Pathogen Transmission ◽  
Published Data ◽  
Beneficial Role ◽  
Digestive Diseases ◽  
High Level ◽  
Cleaning And Disinfection ◽  
Society Guideline

The beneficial role of gastrointestinal endoscopy for the prevention, diagnosis, and treatment of many digestive diseases and cancer is well established. Like many sophisticated medical devices, the endoscope is a complex, reusable instrument that requires reprocessing before being used on subsequent patients. The most commonly used methods for reprocessing endoscopes result in high-level disinfection. To date, all published episodes of pathogen transmission related to gastrointestinal endoscopy have been associated with failure to follow established cleaning and disinfection/sterilization guidelines or use of defective equipment. Despite the strong published data regarding the safety of endoscope reprocessing, concern over the potential for pathogen transmission during endoscopy has raised questions about the best methods for disinfection or sterilization of these devices between patient uses.

scholarly journals Outbreaks of healthcare-associated infections linked to water-containing hospital equipment: a literature review

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Wing-Kee Yiek ◽  
Olga Coenen ◽  
Mayke Nillesen ◽  
Jakko van Ingen ◽  
Edmée Bowles ◽  
...  
Keyword(s):  
Medical Device ◽  
Medical Devices ◽  
Healthcare Associated Infections ◽  
Water Safety ◽  
Source Of Infection ◽  
Closed Water ◽  
Cleaning Staff ◽  
Healthcare Associated ◽  
Cleaning And Disinfection ◽  
Hospital Equipment

Abstract Background Healthcare-associated infections (HAIs) are a significant cause of morbidity and mortality in hospitalized patients. Water in the environment can be a source of infection linked to outbreaks and environmental transmission in hospitals. Water safety in hospitals remains a challenge. This article has summarized available scientific literature to obtain an overview of outbreaks linked to water-containing hospital equipment and strategies to prevent such outbreaks. Methods We made a list of water-containing hospital equipment and devices in which water is being used in a semi-closed circuit. A literature search was performed in PubMed with a search strategy containing the names of these medical devices and one or more of the following words: outbreak, environmental contamination, transmission, infection. For each medical device, we summarized the following information: the function of the medical device, causes of contamination, the described outbreaks and possible prevention strategies. Results The following water-containing medical equipment  or devices were identified: heater-cooler units, hemodialysis equipment, neonatal incubators, dental unit waterlines, fluid warmers, nebulizers, water traps, water baths, blanketrol, scalp cooling, and thermic stimulators. Of the latter three, no literature could be found. Of all other devices, one or more outbreaks associated with these devices were reported in the literature. Conclusions The water reservoirs in water-containing medical devices can be a source of microbial growth and transmissions to patients, despite the semi-closed water circuit. Proper handling and proper cleaning and disinfection can help to reduce the microbial burden and, consequently, transmission to patients. However, these devices are often difficult to clean and disinfect because they cannot be adequately opened or disassembled, and the manufacturer’s cleaning guidelines are often not feasible to execute. The development of equipment without water or fluid containers should be stimulated. Precise cleaning and disinfection guidelines and instructions are essential for instructing healthcare workers and hospital cleaning staff to prevent potential transmission to patients.

Ultrastructural changes in murine lymphoma cells exposed to ultraviolet-A radiation

1991 ◽  
Vol 49 ◽  
pp. 104-105
Author(s):  
Delma P. Thomas ◽  
Dianne E. Godar
Keyword(s):  
Medical Devices ◽  
Blood Cells ◽  
White Blood Cells ◽  
Consumer Products ◽  
Ultrastructural Changes ◽  
Ultraviolet A ◽  
Uv Spectrum ◽  
Lymphoma Cells ◽  
Murine Lymphoma ◽  
Transmission Electron

Ultraviolet radiation (UVR) from all three waveband regions of the UV spectrum, UVA (320-400 nm), UVB (290-320 nm), and UVC (200-290 nm), can be emitted by some medical devices and consumer products. Sunlamps can expose the blood to a considerable amount of UVR, particularly UVA and/or UVB. The percent transmission of each waveband through the epidermis to the dermis, which contains blood, increases in the order of increasing wavelength: UVC (10%) < UVB (20%) < UVA (30%). To investigate the effects of UVR on white blood cells, we chose transmission electron microscopy to examine the ultrastructure changes in L5178Y-R murine lymphoma cells.

Bacterial biofilm behavior in water-supply lines of dental units

1992 ◽  
Vol 50 (1) ◽  
pp. 882-883
Author(s):  
B.D. Tall ◽  
K.S. George ◽  
R. T. Gray ◽  
H.N. Williams
Keyword(s):  
Water Supply ◽  
Medical Devices ◽  
Biofilm Formation ◽  
Bacterial Biofilm

Studies of bacterial behavior in many environments have shown that most organisms attach to surfaces, forming communities of microcolonies called biofilms. In contaminated medical devices, biofilms may serve both as reservoirs and as inocula for the initiation of infections. Recently, there has been much concern about the potential of dental units to transmit infections. Because the mechanisms of biofilm formation are ill-defined, we investigated the behavior and formation of a biofilm associated with tubing leading to the water syringe of a dental unit over a period of 1 month.

C. Equipment Used in Gastrointestinal Endoscopic Examinations, and its Construction (Construction and Characteristics of Endoscope Equipment Relevant to Cleaning and Disinfection)

2000 ◽  
Vol 12 (4) ◽  
pp. 373-375
Author(s):  
Kazuei Ogoshi ◽  
Taiji Akamatsu ◽  
Hiroyasu Iishi ◽  
Daizo Saito ◽  
Nobuhiro Sakaki ◽  
...  
Keyword(s):  
Cleaning And Disinfection
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