The cleaning and decontamination of medical devices with supercritical CO2 outperforms the water-based cleaning currently used in clean rooms.
No more drying steps thanks to CO2
The Dense Fluid Degreasing process is a dry treatment process and therefore does not require drying. at low temperatures, generally between 35 and 50 °C. The low processing temperature preserves the thermo-sensitive polymers and biomaterials.
It is therefore also possible to treat tissues of animal or human origin (e.g. bones, tendons, skin etc.)
Get a pre-sterilization of your MD
Supercritical CO2 is also known to have a strong action on the bioburden present on the parts. It allows to pre-sterilize the parts.
Indeed, supercritical CO2 causes a series of modifications that are lethal for living organisms: acidification of the extra and intracellular pH, modification of the cell membrane, disruption of enzymatic activity and electrolytic balance…
The treatment both cleans and decontaminates medical devices. This pre-sterilization action will allow you to reduce the exposure time during the final sterilization operation by the processes currently approved by the health authorities.
Numerous scientific publications testify to this action on various strains of bacteria or fungi, also in sporulated form.
Gonçalo C.Soares et al, Supercritical CO2 technology: The next standard sterilization technique? Materials Science & Engineering C 99 (2019) 520-54
L. Garcia-Gonzalez et al, High pressure carbon dioxide inactivation of microorganisms in foods: the past, the present and the future. International Journal of Food Microbiology,117 (2007)
G. Bertoloni et al, Medical device disinfection by dense carbon dioxide, Journal of Hospital Infection 77 (2011) 42- 46
Medical implantable textiles
The Dense Fluid Degreasing process with supercritical CO2 has proven its effectiveness in removing sizing oil from textiles (between 2 and 2.5% of the textile’s mass), as an alternative to detergent and/or organic solvent processes (e.g. Soxhlet).
The current processes are long and costly (16 to 24 hours), leave solvent residues in the textiles, which requires costly monitoring and analysis. On polymers and implantable textiles, the efficiency of supercritical CO2 machines has been proven by tests and the results are :
Removal of sizing oil comparable to or greater than levels achieved with conventional processes ≤ 0.1%
No detergent addition, no residual solvent to monitor
Cleaning time divided by 10
Operating costs divided by 4 due to low temperature dry processing without drying
Strong decrease in bioburden with 4 to 5 log reduction
Example of implantable medical textiles cleaned and pre-sterilized with supercritical CO2.
Tendon and ligament replacement braids
Implantable textiles plate
Suture thread spool
Dense Fluid Degreasing autoclave for clean room with automatic and safe opening.
Machines adapted to clean rooms
Dense Fluid Degreasing designs and manufactures cleaning machines perfectly adapted to the needs of the medical industry:
Autoclave for cleaning and decontamination separated from the machine body for grey room or clean room implementation
Machine body can be installed in a neighbouring workshop up to 50m away from the clean room
Cleanable and oxidation resistant materials (316L stainless steel) for the cleanroom/grey room
Greaseless door seal
Recovery of contaminants in the machine body located in a workshop to avoid contamination of the clean room
Possibility of double door through-the-wall autoclave for one-way production flow from the grey room to the clean room
CFR part 11 compliance for the control system. Includes access history and cycle tracking.
Discover other supercritical CO2 cleaning applications
Application for textiles
Autoclaves that can accommodate widths up to 3m
Desensitization of textiles in bulk or on reels
Recycling of metal chips
Extraction of pollutant molecules from a polymer matrix
For the mechanics
Suitable for all metallic and polymeric materials
Ideal for complex parts Removes all residual traces of solvents